mainly responsible for the purchasing of hydraulic pump components. Last October, developed a new hydraulic pump and planned to promote this new product at this year's exhibition. During the debugging, the output pressure of the hydraulic pump can not be established several times, which is a little troublesome, because the owner has sent all the invitations to the exhibition to the customers and grandly introduced the functions of this hydraulic pump. The R & D personnel checked and tested each component one by one. It is basically certain that it is caused by the instability of the pilot operated pressure control valve. The technical team dissected the pilot pressure control valve and found local friction marks on one side of the hole wall of the valve body. The diagnosis conclusion is that the main valve spool is stuck, which should be caused by the concentricity difference between the hole of the main valve body and the hole of the pilot pressure control valve body. to re purchase the pilot pressure control valve that meets the technical requirements, which must be solved within 25 days, otherwise he will leave because the exhibition is too important. the original hydraulic valve manufacturer and got a reply that due to equipment, he could not produce high-precision pilot pressure control valves with the exactly same concentricity. At the same time, he contacted a number of hydraulic valve suppliers and they basically replied that they could not do such a high precision pilot operated pressure control valve, which made almost . When searched the hydraulic valve suppliers in , he found AAK HYDRAULIC VALVE. The details page of the hydraulic valve on AAK made feel that maybe AAK could have a try. He emailed us firstly to ask whether the concentricity of the pilot operated pressure control valve could be consistent. We need the detailed drawings, working conditions and parameters of his whole hydraulic pump to judge. After receiving all information from him, AAK technical team pondered the whole afternoon, with more than 95 confidence, and it would take 15 20 days to complete it. he was happy and uneasy. He was happy that some hydraulic valve manufacturer could try this high-precision pilot operated pressure control valve and has a high probability of success. He was uneasy that if AAK HYDRAULIC VALVE did not succeed in proofing, the time would be wasted. We understand his concern. We told him that the reason why we are not sure for 100 is that there is a data that can't be determined. If AAK HYDRAULIC VALVE failed in sampling, then he should not waste time in Ningbo area. We suggest that he also find a hydraulic valve supplier in Europe, so as to sample with AAK at the same time.
When I got up to go to the bathroom at 1 a.m. last Monday, my wechat phone rang. It was from Carl, the purchasing manager of Denison hydraulic pump company in the United States. I was very surprised by this phone call. Generally, we communicate with Carl in the form of e-mail and have never used wechat phone. Carl firstly said sorry to disturb my rest, and asked if I could arrange a video conference at 8:00 tomorrow morning. He needs to discuss a troublesome problem with our technical team. I'm concerned that the communication on the phone will not be clear, and asked him to send me a written email first, and then I'll reply to him. Half an hour later, a detailed email with a schematic diagram of the hydraulic system came in. Last week, the hydraulic pump supplied by them encountered problems with his customer. The customer's hydraulic system has been shelved for half a year, and now it needs to be driven. After the operator starts the hydraulic pump, there is no pressure in the hydraulic system. The field engineer judged that there was no flow output of the hydraulic pump, but after inspection, it was found that the rotation direction of the motor was consistent with that of the hydraulic pump, and the oil level, oil temperature and viscosity of the hydraulic pump met the working conditions. The suction system of the hydraulic pump was replaced, including the oil suction pipe and filter. After startup, there was still no flow output. The transmission parts inside the hydraulic pump are intact without falling off, fracture and blade jamming. A week has passed and no reason has been found. Because the hydraulic pump is still in the warranty period, if it cannot be solved in another week, it can only be returned for claim. Carl asked the original supplier of each part for the hydraulic pump and got nothing. After reading the email, I asked him if the hydraulic pump used a hydraulic check valve? Carl said that the hydraulic check valve was provided by HAWE company in the United States, but the after-sales period of the hydraulic check valve has expired. Because AAK supplied hydraulic check valves to their company last year, and the quality was very satisfying, although the hydraulic check valve in this hydraulic pump is not from AAK, he wants to see if AAK technical team can find out the reason. I said there was no problem with the 8:00 video conference tomorrow, because the chief engineer of AAK didn't travel, but I'm not sure if we can help. The next day in the video conference, their engineers showed the whole system. Our chief engineer found that the displacement of the hydraulic pump was 8ml / R, so he asked them to fill the hydraulic pump directly in the oil outlet pipeline, and then start it up. The hydraulic pump still had no flow.
James is the purchasing director of one of our American Hydraulic customers. They are the top 3 in the construction machinery industry in the United States, and their market share is increasing year by year. James is also doing well. In May last year, the MP550-HDD-18 cement delivery pump supplied by their company to a local construction company often failed to reach the rated value for the system pressure during use, and the oil pressure of the hydraulic system can only reach 12MPa. After disassembling the hydraulic system, the engineer found that the joint surface between the conical pilot valve body and the valve seat of the hydraulic relief valve was grinded out with a circle of uneven groove line with a depth of about 1mm for unknown reason. The hydraulic oil flowed back to the oil tank from this groove, and the hydraulic relief valve had no sealing function. The customer wanted Jamesâ??s company to replace the hydraulic relief valve of the same model within 2-3 weeks. If they miss the time, the project progress will be affected. When James purchased this hydraulic relief valve from the original German hydraulic valve supplier again, he was told that they produce this hydraulic relief valve no longer. If he wanted to re-produce it, it would take 35 days and modify the production process and auxiliary equipment, which would require an additional cost of more than 30,000 US dollars. This style of hydraulic relief valve was just purchased by James 2 years ago. When he reported this situation to the president, the president didn't understand why he didn't have an alternative hydraulic valve manufacturer. James realized that the president was unhappy. When he sent the anatomical drawing of this hydraulic relief valve to more than 20 hydraulic valve manufacturers, almost all said that they have no hydraulic relief valve with such structure, James was a little flustered. In March this year, James just purchased a batch of high-precision hydraulic relief valves from AAK. He wanted to see if AAK had a way to solve this thorny problem. When he sent us the pictures of this hydraulic relief valve made in Germany, we asked him to send us the whole complete technical drawings, as well as the use environment and working conditions. The pressure of this hydraulic relief valve is 31.5Mpa and the flow is 200L / min, which is basically consistent with the parameters of the hydraulic relief valve we supplied to them before. However, there is a fatal problem that the internal structure, appearance, shape and size are inconsistent with those of the hydraulic relief valve they purchased in Germany, so it is difficult to install on the transmission line. After learning that the only way is to meet the requirements of the transmission line at the construction site in the United States, AAK engineers designed a new hydraulic system with two pipe joints and an oil plug according
AAK uses Rockwell hardness tester to check the hardness of each part of the hydraulic valve, so that the hardness of each heat-treated alloy steel is "exposed". Nearly 90% of domestic hydraulic valve manufacturers are not equipped with this Rockwell hardness tester with the highest accuracy. An Italian hydraulic valve customer, who disliked the expensive price of AAK, purchased the high hardness hydraulic directional valves from another hydraulic valve manufacturer but suffered loss from poor quality, he finally returned to AAK to place an order. Because of the common problem of unstable heat treatment in the industry, the hardness test of hydraulic valves with high requirements for stability is very important. Most hydraulic valve manufacturers can't grasp the details of hardness testing. They don't have high-precision hardness testing instruments, just checking the hardness by experience. They often put on-line production without knowing the hardness of materials is not up to standard due to human errors. Harvey is a hydraulic valve purchaser from Italy. In particular, there are many inquiries for hydraulic directional valves, and the hardness requirements for hydraulic directional valves are particularly high, with few requirements below 65HRC. Since last year, he has sent AAK inquiries for hydraulic directional valves every 2 weeks, all of which are 65-68HRC hardness indicators. Strangely, there were 10 inquiries for hydraulic directional valve, but no order was placed with AAK. Every time we followed, the reply we almost received was "the price is too high and will not be considered for the time being". We realized that this is not our customer. In June this year, Harvey sent an inquiry for the hydraulic directional valve with 68HRC hardness index, which is very similar to the 68HRC hydraulic directional valve inquired last year. We didn't quote the same day and intended to give up. The next day, he emailed again to ask whether his inquiry had been received. We replied that the AAK price doesn't meet your goal. We won't make an offer for the time being. Let's make friends. Harvey probably realized that AAK didn't want to waste time, he told us the truth frankly. There was a problem with the 68HRC hardness hydraulic directional valve he purchased from another hydraulic valve manufacturer. Strangely, the thickness measured in the shipping inspection link was up to standard. After the customer received the shipments of hydraulic directional valve, there were continuous complaints, all of which were due to the instability of the hydraulic system caused by unqualified hardness. From his description, I felt that there was something wrong with the testing instrument and asked him to send samples to us for testing. He was surprised when he learned from the other hydraulic valve manufacturer that there was no test report for 68HRC hardness.
Some time ago, , from a Hydraulic Valve Company in UK, fell in a batch of hydraulic directional valves purchased in Ningbo. There had some email communication between HYDRAULIC VALVE and , but maybe the fate has not yet arrived, we did not cooperate until last month this year. Steven regained his confidence because he had suffered a waterloo and got back a key game here in . At the beginning of this year, a batch of hydraulic directional valves purchased by Steven in Ningbo were stuck and failed during the test run, resulting in the failure of the whole batch of equipment to start up and run. His customer asked UK company to solve it within 30 days, otherwise there will be a big claim. Steven informed the original hydraulic valve manufacturer of these conditions, but the manufacturer prevaricated that it was a problem caused during the assembly process and had no direct relationship with them. Steven also consulted other hydraulic valve manufacturers. They either replied that the hydraulic valve was not produced by them and could not give the corresponding strategy, or there was no reply. Steven received serious rebuff here and there, and feel stressed. When contacted HYDRAULIC VALVE, we were willing to cooperate with him to solve this problem because we felt his trust in HYDRAULIC VALVE. Through his email description, we were still not sure what the problem is, and asked him to send us samples. After HYDRAULIC VALVE received the hydraulic directional valve samples from Steven, we felt that the relative sliding between the middle valve column and the valve body was not smooth. When the whole hydraulic directional valve is disassembled, there are slight scratches on the column surface, the valve body hole has a negative tolerance, and the valve body column hole has plastic distortion. Further microscopic examination showed that the surface of the material was etched badly. It is certain that the original hydraulic valve manufacturer has problems in material selection and heat treatment of alloy steel. Then we informed Steven of the result in a report and attached our suggestions for this style of hydraulic directional valve. After receiving the report, Steven seemed to see hope and asked us to make 5 hydraulic directional valve samples for his customer to run successfully first. After knowing the working conditions of this hydraulic directional valve, we adjusted the material selection of alloy steel, and increased the overall hardness of the hydraulic directional valve by 30% on the original basis. week after Steven received the samples, he informed HYDRAULIC VALVE by e-mail that the hydraulic directional valve samples made by were started up smoothly as soon as they were tested on the machine. When the new delivery date and order quantity were confirmed by his customers, he was finally relieved.
The valve spool hardness of hydraulic flow valves reached 65HRC, the German customer Fellix was impressed after receiving the first batch of shipments. Last week, he placed a reorder for 9,600 hydraulic flow valves, with a total value of more than 60,000 US dollars, and regarded as his preferred supplier for hydraulic valve purchasing In the hydraulic valve industry, more and more hydraulic valve manufacturers focus on homogeneous hydraulic valves, resulting in a decline in the level of hydraulic valve material selection and material reprocessing technology. Many hydraulic valve manufacturers think that their valve spool hardness meets the standard, but problems come out when they make samples or run production. The reason why most of hydraulic valve manufacturers can not solve the hardness problem well, mainly is: 1) without professional and systematic material knowledge, don't know how to choose the most suitable alloy steel material. 2) In the heat treatment of materials, most of them are led by the processing plants, mainly because the heat treatment is outward processing, and 20% of the outward processing is to change a place with one shot, and the hardness can not be guaranteed at all. Before the first cooperation with , Fellix consulted no less than 30 hydraulic valve manufacturers for the hydraulic flow valve with 65HRC valve spool hardness within 1 month. Only 2 said that 58HRC was the limit they can achieve. As for the other hydraulic valve manufacturers, no any feedback at all. Fellix was extremely disappointed. When browsing the Fellix accidentally encountered The article mentioned that 30 factories could not make the valve spool with a hardness of 65HRC, had already achieved in mass production, which made him curious about how the can be different. Fellix learned that has its own set of SOP for the selection of valve spool materials. Unlike the other hydraulic valve manufacturers, who use one material for nearly all hydraulic valves. will select the most suitable steel according to the working scene of hydraulic valve, the medium used and the hydraulic parameters of customers, combined with the wear resistance, linear expansion coefficient and deformation of different steel, such as Cr12MoV, 12CrNi3A 18crniwa, GCr15 and other high-grade tool steels. More importantly, has its own heat treatment plant, which can adopt different heat treatment methods in quenching, carburizing and nitriding according to different contents of steel. For example, pretreatment, quenching, cold treatment, tempering, aging, fine processing and other secondary aging, the aging temperature and holding time of these processes are the key.
Gerrard, a Spanish hydraulic customer who just repeated the order at the end of May, repeated another order for hydraulic pressure valve again today, with total 3 orders for a hydraulic pressure valve a year. Since Gerrard chose AAK hydraulic valve, his customers are very satisfied with the accuracy and stability of AAK hydraulic valve. The market sales volume has increased by nearly 30% year-on-year. Now he has a higher and higher position in the company. I still remember that Gerrard urgently needed to purchase a batch of hydraulic pressure valves for cranes. However, due to the high requirements for inner hole accuracy, he visited more than 10 hydraulic valve manufacturers, and none of them could reach around 1�¼m error requirement. Gerrard was very anxious. Fortunately, some peers brought Gerrard into contact with AAK. Finally, AAK helped to solve the problem of inner hole accuracy of hydraulic pressure valve smoothly. 3 months before Gerrard got into touch us, AAK HYDRAULIC VALVE purchased a honing machine imported from the United States to deal with the production of special orders. After repeated exploration for more than a month, modified the fixture of the equipment ourselves, we created the most consistent SOP to ensure the 1 �¼M accuracy error of the inner hole for the hydraulic pressure valve. At present, less than 5% of the domestic hydraulic valve manufacturers are equipped with this equipment. Among these 5% of hydraulic valve manufacturers, maybe only one manufacturer, we AAK HYDRAULIC VALVE, can modify the equipment on our own. When AAK HYDRAULIC VALVE promised Gerrard that we have 90% of confidence to ensure that the inner hole accuracy of the hydraulic pressure valve can be controlled at 1 �¼ M, he was uneasy. After all, he visited more than 10 hydraulic valve manufacturers, and none of them successfully controlled the inner hole accuracy of the hydraulic pressure valve to 1 �¼mã??Gerrard also was in doubt. We can understand him, because we haven't done the hydraulic pressure valve with inner hole accuracy error controlled at 1 �¼ M before. After 15 days of sending the sample, Gerrard emailed us that the sample of AAK hydraulic pressure valve was approved at one time, and the surface finish of the hydraulic pressure valve was also praised by his clients. Subsequently, the first hydraulic pressure valve order from him was successfully completed. AAK hydraulic pressure valve has two absolute advantages in controlling inner hole accuracy: 1. AAK HYDRAULIC VALVE has advanced equipment - honing machine, which is refitted by ourselves to ensure that the inner hole accuracy of the hydraulic pressure valve can be controlled at 1�¼m. 2. AAK HYDRAULIC VALVE has targeted operation process, can realize the personalized customization demand for the inner hole accuracy of hydraulic pressure valve, which can not be achieved by 95% of domestic hydraulic valve manufacturers.
Just yesterday, I received a repeat order from Andy for a hydraulic flow control valve, which is just 3 months away from the delivery time of the last batch of hydraulic valves. The American customer Andy, started to communicate with us in 2019. Maybe it was just not the right time, we still didn't partner with each other till the beginning of this year. Because of encountering a Waterloo at the previous hydraulic valve manufacturer, he turned the tables at AAK and regained his confidence. At the end of last year, Andy purchased a batch of hydraulic flow control valves from a hydraulic valve manufacturer. Because 20% of the shipments leaked, he encountered customer claims. The old hydraulic valve manufacturer was unwilling to bear the claim or re-produce. The customer kept pushing for replacement hurriedly. The owner asked him to find a high-quality hydraulic valve manufacturer to reproduce the goods for the customer. Andy had a big headache at that time. The replacement quantity is not big, the hydraulic valve manufacturers with exquisite quality were unwilling to produce the small quantity for him. The hydraulic valve manufacturers who were willing to produce this quantity, were not able to meet the customerâ??s requirement about the roughness of hydraulic flow control valve. He ran into a wall everywhere, which made Andy haggard. When Andy contacted with AAK HYDRAULIC VALVE, we are willing to cooperate with her to solve this difficult problem. We tested the leaked hydraulic flow control valve sample. The reason for the leakage is the roughness of the mounting surface of the hydraulic flow control valve. According to the customer's service conditions, this roughness must be controlled at 1.0 �¼ M or less. Andy is very confused why 80% of the installation surface roughness of hydraulic flow control valve is up to standard, while 20% is out of this range. The root of this fluctuation is the master's operation method, resulting in human error. The surface roughness is the depth, density, texture of the traces left on the machined surface from the action between the tool and the part surface, which depends on the master's processing technique. Andy is very clear that at present, most domestic hydraulic valve manufacturers generally control the roughness of the installation surface of hydraulic flow control valve at 0.8-1.0 �¼ m. The biggest problem is not stable enough. Andy also knows that only AAK controls the roughness value of hydraulic flow control valve within 0.8 �¼ M, which can completely avoid leakage outside the hydraulic flow control valve, because of rest assured, Andy decided to repeat the order with AAK HYDRAULIC VALVE.
Just yesterday, I received a repeat order from Andy for a hydraulic flow control valve, which is just 3 months away from the delivery time of the last batch of hydraulic valves. The American customer Andy, started to communicate with us in 2019. Maybe it was just not the right time, we still didn't partner with each other till the beginning of this year. Because of encountering a Waterloo at the previous hydraulic valve manufacturer, he turned the tables at AAK and regained his confidence. At the end of last year, Andy purchased a batch of hydraulic flow control valves from a hydraulic valve manufacturer. Because 20% of the shipments leaked, he encountered customer claims. The old hydraulic valve manufacturer was unwilling to bear the claim or re-produce. The customer kept pushing for replacement hurriedly. The owner asked him to find a high-quality hydraulic valve manufacturer to reproduce the goods for the customer. Andy had a big headache at that time. The replacement quantity is not big, the hydraulic valve manufacturers with exquisite quality were unwilling to produce the small quantity for him. The hydraulic valve manufacturers who were willing to produce this quantity, were not able to meet the customer's requirement about the roughness of the hydraulic flow control valve. He ran into a wall everywhere, which made Andy haggard. When Andy contacted with AAK HYDRAULIC VALVE, we are willing to cooperate with her to solve this difficult problem. We tested the leaked hydraulic flow control valve sample. The reason for the leakage is the roughness of the mounting surface of the hydraulic flow control valve. According to the customer's service conditions, this roughness must be controlled at 1.0 M or less. Andy is very confused why 80% of the installation surface roughness of hydraulic flow control valve is up to standard, while 20% is out of this range. The root of this fluctuation is the master's operation method, resulting in human error. The surface roughness is the depth, density, texture of the traces left on the machined surface from the action between the tool and the part surface, which depends on the master's processing technique. Andy is very clear that at present, most domestic hydraulic valve manufacturers generally control the roughness of the installation surface of hydraulic flow control valve at 0.8-1.0 m. The biggest problem is not stable enough. Andy also knows that only AAK controls the roughness value of hydraulic flow control valve within 0.8 M, which can completely avoid leakage outside the hydraulic flow control valve, because of rest assured, Andy decided to repeat the order with AAK HYDRAULIC VALVE.
It took 3 months and 6 proofing adjustments to match the sample quality of hydraulic pressure control valve made in Germany. Finally, AAK passed the parameter test of hydraulic pressure control valve, and our hydraulic pressure control valve was affirmed by Eatonâ??s company. We became Eatonâ??s first supplier for hydraulic pressure control valve in China. In mid October last year, an agent of Eaton came to AAK HYDRAULIC VALVE and brought a sample of Eaton hydraulic pump with a purchase value of more than US$150,000.00, asking us to make a quotation. After we checked the product parameter requirements of the artwork, we declined the quotation because AAK is only good at hydraulic valve products. Compared with its domestic peers, most of the technologies of AAK HYDRAULIC VALVE were in TOP 1-6. We thought Eaton agent would not consider us again. However, after a month, he came again and brought a Vickers Series solenoid valve with a value of up to US$200,000.00. We directly said that we are not good at this kind of products and couldn't quote. Eaton agent saw that we rejected the products that AAK is not good for 2 times, he felt that AAK is different from other hydraulic valve manufacturers, and recognized the professionalism of AAK HYDRAULIC VALVE. For the 3rd time, he brought a sample of pilot hydraulic pressure control valve with very high precision and wanted to test the parameters with our pressure test bench. I realized that Eaton agent actually wanted to test our pressure test bench with his samples. It was the first time for us to encounter such a situation, the purchaser did not test the quality of AAK hydraulic valve, but tested the equipment producing hydraulic valves first. Being satisfied with our pressure test bench, he asked if we were interested in this pilot hydraulic pressure control valve, which was a hydraulic pressure control valve produced in Germany. After learning the parameters of the hydraulic pressure control valve in detail, AAK HYDRAULIC VALVE technical team discussed the artwork of the hydraulic pressure control valve. We were 90% sure to match the quality of this hydraulic pressure control valve produced in Germany. More than 20 days later, we sent the first approval sample of the hydraulic pressure control valve. The sample comments was that there was still a 12% difference between the accuracy of AAK hydraulic pressure control valve and that of German hydraulic pressure control valve. We were required to send the revised sample again. The whole proofing and approving process have been bumpy, the parameters were continuously required to be improved. The samples have been adjusted for 6 times, finally, it met the quality of the German hydraulic pressure control valve after 3 months.
Cliff is a purchaser of a hydraulic valve company in the United States. He began to contact the domestic hydraulic valve industry in China a few years ago and looked for new hydraulic valve suppliers everywhere. He didn't know much about the status of China domestic hydraulic valve industry and often ran up against a stone wall. A few months ago, he purchased a hydraulic diverter valve in Ningbo, the hometown of hydraulic valves. He encountered problems and could not guarantee the delivery date. It was a trial order of hydraulic diverter valve for their company's major customer. This customer is one of the world's top 500 enterprises. If the delivery date couldnâ??t be guaranteed, the owner must be mad. After the communication between his owner and the customer, the customer required that the remaining 50% of the hydraulic diverter valves must be delivered within 40 days, otherwise, the order would be cancelled and all future hydraulic valve orders will not be placed neither. Cliff took this as a chance to prove himself. He spent a week constantly looking for new hydraulic diverter valve manufacturers, sending emails and making phone calls. With the situation of his last hydraulic valve manufacturer, he found that nearly most of the hydraulic valve manufacturers had low awareness of production efficiency. No matter whether the time given by the customer is enough for production or not, they just accepted the orders first. If the customer is urgent in need of goods, nearly 90% of the hydraulic valve manufacturers will choose outsourcing processing. The same batch of shipment will come from different hydraulic valve processing places, and the quality of the hydraulic valves is uneven. Cliff's other hydraulic valve suppliers in Ningbo suggested him to see if AAK HYDRAULIC VALVE has time to catch up the delivery for these hydraulic diverter valves. After knowing about the situation, I suggested that he sent us 3 samples from the shipment of the hydraulic diverter valves, as well as the drawings, detailed information and process parameters etc, and then we can check if AAK can match the quality consistent and deliver the goods in time. The AAK technical team had formed the production process and operation instructions for each process for this hydraulic diverter valve order to clean up the mess, to ensure that the production can be completed with the time frame given to Cliff. Cliff was glad that we AAK HYDRAULIC VALVE could solve this problem, and wanted to know more about how we guaranteed the delivery date. I told him that there was an old Chinese saying that if you want a horse to run fast, you must let the horse eat well. Similarly, in the production of hydraulic valves, if you want to produce fast, you must not only have good equipment, but also special equipment. AAK HYDRAULIC VALVE has many high-precision imported CNC lathes and honing machines, as well as many small AAK designed fixtures and assembled special processing equipment.
Cliff is a purchaser of a hydraulic valve company in the United States. He began to contact the domestic hydraulic valve industry in China a few years ago and looked for new hydraulic valve suppliers everywhere. He didn't know much about the status of China domestic hydraulic valve industry and often ran up against a stone wall. A few months ago, he purchased a hydraulic diverter valve in Ningbo, the hometown of hydraulic valves. He encountered problems and could not guarantee the delivery date. It was a trial order of hydraulic diverter valve for their company's major customer. This customer is one of the world's top 500 enterprises. If the delivery date couldnâ??t be guaranteed, the owner must be mad. After the communication between his owner and the customer, the customer required that the remaining 50% of the hydraulic diverter valves must be delivered within 40 days, otherwise, the order would be cancelled and all future hydraulic valve orders will not be placed neither. Cliff took this as a chance to prove himself. He spent a week constantly looking for new hydraulic diverter valve manufacturers, sending emails and making phone calls. With the situation of his last hydraulic valve manufacturer, he found that nearly most of the hydraulic valve manufacturers had low awareness of production efficiency. No matter whether the time given by the customer is enough for production or not, they just accepted the orders first. If the customer is urgent in need of goods, nearly 90% of the hydraulic valve manufacturers will choose outsourcing processing. The same batch of shipment will come from different hydraulic valve processing places, and the quality of the hydraulic valves is uneven. Cliff's other hydraulic valve suppliers in Ningbo suggested him to see if AAK HYDRAULIC VALVE has time to catch up the delivery for these hydraulic diverter valves. After knowing about the situation, I suggested that he sent us 3 samples from the shipment of the hydraulic diverter valves, as well as the drawings, detailed information and process parameters etc, and then we can check if AAK can match the quality consistent and deliver the goods in time. The AAK technical team had formed the production process and operation instructions for each process for this hydraulic diverter valve order to clean up the mess, to ensure that the production can be completed with the time frame given to Cliff. Cliff was glad that we AAK HYDRAULIC VALVE could solve this problem, and wanted to know more about how we guaranteed the delivery date. I told him that there was an old Chinese saying that if you want a horse to run fast, you must let the horse eat well. Similarly, in the production of hydraulic valves, if you want to produce fast, you must not only have good equipment, but also special equipment. AAK HYDRAULIC VALVE has many high-precision imported CNC lathes and honing machines, as well as many small AAK designed fixtures and assembled special processing equipment.
Nearly 90% of the hydraulic cartridge valve manufacturers in Ningbo can not achieve the filtration accuracy as high as 10 Microns. But AAK is 1 of the less than 10% hydraulic cartridge valve manufacturers with a filtering accuracy up to 10 Microns. Dylan came to AAK HYDRAULIC VALVE with a very special two position two-way hydraulic cartridge valve. I knew he should have encountered a problem. For this special hydraulic cartridge valve, the filtration accuracy of 10 Microns was the minimum requirement. Dylan consulted the existing cooperated hydraulic cartridge valve manufacturers, but none of them could meet the requirement. Most hydraulic cartridge valve manufacturers said that the filtering accuracy of 25 Microns is 100% no problem. Only 1 hydraulic cartridge valve manufacturer gave feedback and was 70% sure that the filtering accuracy could reach 10 Microns. Dylan directly asked me, is it really difficult for these hydraulic cartridge valve manufacturers in Ningbo to achieve the filtering accuracy of 10 microns? How can so many hydraulic cartridge valve manufacturers have said that they can only achieve the filtering accuracy of 25 Microns? I could understand his helplessness and confusion. This is because that the conventional hydraulic cartridge valve manufacturers produce hydraulic valves according to domestic hydraulic standards in China. Not only 1 or 2, but nearly 90% of hydraulic cartridge valve manufacturers, can only able to get the filter element aperture reaches 25�¼m. We AAK HYDRAULIC VALVE also used conventional filters at the beginning, and the filtration accuracy was also based on domestic standards. 3 years ago, a German hydraulic valve customer requested the accuracy requirement of 10 Microns, which was not only a stimulus but also a challenge for us. After more than 2 months of adjusting, we improved the process on the small sample, and adjusted the equipment parameters until it was configured to a high-precision filter and cooperated with AAK special hydraulic oil, so that the filtration accuracy of particles in the hydraulic oil could be controlled to 10m. 1 year later, some hydraulic cartridge valve manufacturers learned that AAK had upgraded with high-precision filters and followed suit. However, due to technical constraints, many hydraulic cartridge valve manufacturers still failed to meet the standard. Under the same working conditions, if the hydraulic cartridge valves from these hydraulic cartridge valve manufacturers have a service life of 2 years, the service life of AAK hydraulic cartridge valves can be extended to 3-4 years. Dylan was surprised that we had mass produced hydraulic cartridge valves with filtration accuracy up to 10 Microns 3 years ago, but only 1 of his current hydraulic cartridge valve manufacturers could do it, and with only 70% sure. Dylan took out the drawings and asked us to send samples of this special hydraulic cartridge valve within 20 days.
The hydraulic directional valves produced by AAK adopts its own proprietary quenching and tempering heat treatment process, which can greatly improve the strength of the hydraulic directional valve, avoid deformation and wear of the hydraulic directional valve in the long-term use process, and significantly increase the service life. Perhaps there is no second comparable manufacturer in Ningbo like this. At most, 10% of the domestic hydraulic valve peers can compete. In order to win orders, 50% of the hydraulic valve manufacturers do not do any heat treatment to the materials for the hydraulic parts. Although some hydraulic valve manufacturers insist on heat treatment, they can only be outsourced processing due to without equipment. There are also 20% of hydraulic valve manufacturers, who do not have a fixed outsourced processing place, so it is impossible to ensure the heat treatment quality, not to mention the stability. Due to these common problems in the hydraulic valve industry, the hydraulic valve will show many problems after being used for a period of time, such as product deformation and wear. Once the hydraulic valve is deformed, it will easily to be blocked and the service life of the hydraulic valve will be greatly shorten. 5 months ago, Mike, a hydraulic valve customer in the United States, came to me. He had been confused, since 2019, there have been continuous customer complaints about the hydraulic directional valve he purchased. All the complaints are that after the hydraulic directional valve has been used for a period of time, some hydraulic directional valves are deformed and some hydraulic directional valves are worn quickly. Obviously, there is a problem with the heat treatment of the materials used in the hydraulic directional valve. Since 2019, due to the environmental protection policy, the domestic heat treatment plants have been vigorously rectified, and there are much fewer processing places. 50% of the hydraulic valve manufacturers do not have a place to do heat treatment to the raw materials. Even if heat treatment is done, 20% of the hydraulic valve manufacturers have to change the processing places for each external processing. I sent him several samples of AAK hydraulic directional valve and told him that the material hardness of our hydraulic directional valve has not changed, which always can reach about 50-55HRC or higher, and there is no problem with the special requirement of 65HRC. He didn't know that the service life of hydraulic valve is our hard index. 3 months ago, Mike issued a test order for the hydraulic directional valve. Each different part of the hydraulic directional valve is marked with different hardness requirements. He also wants to know how AAK ensures the service life of the hydraulic directional valve.
AAK HYDRAULIC VALVE has grown for 15 years, as one in the group of hydraulic valve suppliers in Ningbo. The supply of hydraulic valves has reached its peak and trough, but we always remember that we are a hydraulic valve supplier. I believe that as long as we don't give up and do hydraulic valves all our life, AAK will become the best hydraulic valve supplier. Our hydraulic valves have been supplied to 3 of the world's top 500 Enterprises. There may be no second such hydraulic valve factory among the Ningbo based hydraulic valve suppliers. Angelo, an American customer from top 500 enterprises, was introduced to AAK HYDRAULIC VALVE by a friend. He needed to make a sample of a hydraulic pressure valve for his customer to test new equipment. According to Angelo, he successively contacted no less than 10 hydraulic valve suppliers. After 2 rounds of elimination, 3 hydraulic valve suppliers were selected for proofing. The hydraulic pressure valve samples produced by 3 hydraulic valve suppliers had some leakage, vibration and noise under different working conditions. His customer was not satisfied with the samples from these hydraulic valve suppliers. The customer asked him to find an American hydraulic valve supplier. Considering the high cost of American hydraulic valve suppliers, he still wanted to try the hydraulic valve suppliers in China. If a qualified hydraulic valve supplier still couldn't be found, he had to give up. Due to equipment limitations, if the requirements of working conditions are relatively high, the hydraulic pressure valves produced by most China hydraulic valve suppliers will have the problems mentioned above. The fundamental reason is that the accuracy of hydraulic pressure valve is not enough. Generally, the ordinary hydraulic valve suppliers cannot do this high-precision hydraulic pressure valve. The accuracy of hydraulic pressure valve has always been a hard index of AAK. AAK is not only equipped with high-precision machine tools, but also with special equipment. AAK HYDRAULIC VALVE has many high-precision imported CNC lathes and honing machines, as well as many small AAK designed fixtures and assembled special processing equipment. Each equipment has operation instructions to eliminate human errors. For the coarse grinding in the early stage to the fine grinding in the later stage, at least 3 times of repeated debugging and testing shall be carried out until the accuracy index requirements are fully met. In Ningbo, it is difficult to find a second such hydraulic valve supplier. Angelo realized the difference between AAK HYDRAULIC VALVE and other hydraulic valve suppliers. A week later, we delivered the samples according to the product accuracy required by Angelo. His customers recognized the accuracy of the hydraulic pressure valve in 3 days after receiving the samples. Angelo was satisfied and said that AAK would be his preferred hydraulic valve supplier in Ningbo.
A tiny detail of the hydraulic check valve symbol direction is wrong, which put the hydraulic check valve manufacturer in a very difficult position, the factory is almost closed. There is a devil in the details. Whether you can grasp the devil of the hydraulic check valve symbol requires you to think every day, in addition to hydraulic check valve, hydraulic check valve, and still hydraulic check valve. When I opened the mailbox, I saw the e-mail of Adair who we had known for 3 years. There was a habit with Adair. He purchases only one type of hydraulic valves from each one hydraulic valve manufacturer. We AAK HYDRAULIC VALVE has been his supplier for the hydraulic pressure valves. After reading the email, it was actually a proofing request for a hydraulic check valve, not a hydraulic pressure valve. It was a little abnormal. I thought he sent the wrong email. I reminded him whether the e-mail was sent by mistake. He said bluntly that he would need 3 samples of the hydraulic check valve as soon as possible, according to the drawings in his email. Somehow, I always felt there was a problem somewhere, and I went to see the drawing of the hydraulic check valve. It is found that in the layout at the bottom of the drawing, the arrow direction on the hydraulic check valve symbol is reversed. For the hydraulic check valve symbol, the arrow direction is reversed, which is fatal. It seems that a designer is unlikely to make such a low-level mistake. When the technical team got the drawing and started proofing, they called me. The hydraulic check valve symbol on the drawing seemed wrong. I'm glad they can also find that there is an objection to the hydraulic check valve symbol. I asked what they think of the hydraulic check valve symbol. They suggested making two sets of samples, one according to the hydraulic check valve symbol on the customer's drawing, and the other is for the hydraulic check valve symbol we understand. When Adair received two sets of samples, he deliberately asked why they were two sets of samples. When we pointed out the details of the hydraulic check valve symbol, Adair began to tell me the devil's story of the hydraulic check valve symbol. 6 months ago, he sent his hydraulic valve manufacturer the drawing with this hydraulic check valve symbol, which was made by their chief designer overnight. The hydraulic valve manufacturer proofed according to this drawing. As a result, the hydraulic check valve sample was also approved at one time. The devil began to make trouble from this time. The 2,000 hydraulic check valves were produced and shipped to his customer. The customer is testing a new production line and needs to use these hydraulic check valves. After installation, there is a big problem in startup and commissioning. Because of the wrong direction, the medium returned, polluting the whole new production line, and directly causing a loss of more than 260,000 US dollars.
In Google, enter the types of hydraulic valves, and you can get a series of information about the types of hydraulic valves. It looks like that each description about the types of hydraulic valves are all right. This makes Berge a very big headache. He transferred from the quality control department to the import department. He is a very studious buyer. Every time, when domestic hydraulic valve manufacturers in China receive his design drawings, they ask a lot of questions about the types of hydraulic valves. Berge asked me how to clearly understand the types of hydraulic valves expressed by hydraulic valve manufacturers and how AAK classifies the types of hydraulic valves. I gave him an example. If there are a pile of stools there with various shapes and materials, how should we classify them? Firstly divide the same kind of materials together, and then classify them for the second time to put different shapes together. This simple dichotomy is also suitable for the types of hydraulic valves. What is a hydraulic valve? It is a hydraulic element used to control liquid pressure, flow and direction in hydraulic transmission. Letâ??s classify the types of hydraulic valves for the first step: A. The types of hydraulic valves are divided into 3 categories according to their functions: directional control valve (such as one-way valve, reversing valve etc.), pressure control valve (such as relief valve, sequence valve, pressure reducing valve etc.), flow control valve (such as throttle valve, speed regulating valve etc.). B. According to the operation, the types of hydraulic valves are divided into manual valve, motorized valve, electric valve, hydraulic valve etc.. C. According to the control, the types of hydraulic valves are divided into Control valve, Cartridge valve and sandwich plate valve. D. According to the installation, the types of hydraulic valves are divided into threaded connection valve, plate connection valve, integrated connection valve, Superposition valve and cartridge valve Then, let is classify the types of hydraulic valves for the second step. From above A category, if according to the installation, you will get the sub-category of the types of hydraulic valves, for example, the threaded hydraulic pressure valve. Berge understood the dichotomy of the type of hydraulic valves immediately, especially dividing them by using stools as example, which is very practical. As soon as you listen and compare, you will understand, and can well understand the various questions about the types of hydraulic valves from different hydraulic valve manufacturers. In this way, the types of hydraulic valves are summarized from different angles. Combined with the dichotomy of the types of hydraulic valves, the types of hydraulic cartridge valves are basically clear, and they are interconnected and integrated. AAK HYDRAULIC VALVE can express any complex question about hydraulic valve to you with "analogy".
Most of the technologies of AAK HYDRAULIC VALVE are in the TOP 1-6 among over 200 hydraulic valve manufacturers in Ningbo. We have supplied hydraulic valves to 3 global TOP 500 enterprises. There may be no 2nd Hydraulic valve manufacturer like AAK in Ningbo. Last night, I had nothing to do, so I remembered that I hadn't talked to Ron for several weeks. I asked him on WeChat first "Is it convenient to talk?". 5 minutes later, Ron called me. I asked Ron if there had been any problem with the AAK HYDRAULIC VALVE service in the past more than 1 month. If there was anything we hadn't done enough, please leave a message at any time. Ron said that he liked hydraulic valve manufacturer like AAK because it made him feel very safe. I asked him curiously why he said so. Ron said, â??The standard for me to choose a hydraulic valve manufacturer is whether the hydraulic valve manufacturer can reassure me. Because we Americans think when the matter is handed over to the hydraulic valve manufacturer, it means that the matter is over. We just need to wait for the result. For example, I place an order to the hydraulic valve manufacturer, which means that the work of my order to the hydraulic valve manufacturer has been completed. I just wait for the goods receipt." Ron went on to say, "For hydraulic valve manufacturer like you AAK, report everything. I still remember the first order I placed with AAK 3 years ago. When the sample sending time was approaching, you reported to me when the sample would be sent. After the PPS of hydraulic valve was sent, you reported me when I could expect to receive the PPS of hydraulic valve. On another occasion, due to the environmental protection, the sending of samples had to be delayed. You also gave me a detailed report on what problems AAK HYDRAULIC VALVE encountered, the new solutions and new sample sending date. These all are my judgments on the details of hydraulic valve manufacturers as the buyer of hydraulic valves. In my mind, AAK is the most detailed hydraulic valve manufacturer." I asked about the quality of the hydraulic valves we recently shipped. Ron said that he was not too worried about the quality of AAK HYDRAULIC VALVE manufacturer. The 3 global TOP 500 enterprises recognize the quality of AAK hydraulic valves. As long as there is no human error in the production of AAK HYDRAULIC VALVE manufacturer, the quality will be guaranteed. After talking for more than half an hour, Ron gave me a good lesson. It's difficult to do business with Americans. But if you do the details well, it's not difficult. The sense of service, time and quality are very important. Ron finally said, "AAK moved me with the quality I didn't expect and retained me with the details. It took the least time to purchase hydraulic valves from AAK and get assured quality. Who doesn't like such a hydraulic valve manufacturer?"
In Ningbo, the hometown of hydraulic valves, conservatively speaking, there are more than 100 hydraulic cartridge valve manufacturers. 4 years ago, we began to contact HydraForce. AAK HYDRALUC VALVE lasted 2 years, replaced hydraulic valve materials 3 times and proofed 4 times, becoming the first hydraulic cartridge valve manufacturer supplier of HydraForce valves among so many hydraulic cartridge valve manufacturers in Ningbo. 4 years ago, I received a call from President Li, who is the agent of HydraForce valves in China. He said that from the hydraulic cartridge valve manufacturers in Ningbo, he heard that AAK HYDRAULIC VALVE have invested a lot of equipment and constantly innovated technology, and has a good benchmark in Ningbo among hydraulic cartridge valve manufacturers and asked if we are not interested in becoming a supplier of HydraForce valves. Everyone wants to cooperate with top 500 enterprises in the world. While agreeing, I am also a little nervous. I am worried that if the quality of hydraulic valves does not meet the standard, we would make jokes among these hydraulic cartridge valve manufacturers in Ningbo. The first entry point between us and hydraforce valves is a hydraulic cartridge valve. The AAK HYDRAULIC VALVE technical team spent 33 days and sent the approval sample of the hydraulic cartridge valve. We soon got a reply from HydraForce valves. They asked us to re-make sample, listed us those parameters to be improved, and also gave us some encouragement. At present, AAK HYDRAULIC VALVE parameters are among the top 3 of the hydraulic cartridge valve manufacturers in Ningbo. Since AAK HYDAULIC VALVE can represent the manufacturer of hydraulic cartridge valve in Ningbo, we must continue to overcome difficulties until the sample of hydraulic cartridge valve is approved. We constantly tested imported materials, replaced imported machine tools with higher precision, designed different fixtures, and assembled special equipment required for proofing. The 4th hydraulic cartridge valve has finally been recognized by HydraForce valves, and has also been affirmed by hydraulic cartridge valve manufacturers in Ningbo. AAK HYDRAULIC VALVE, in 2 years, replaced hydraulic valve materials 3 times and proofed 4 times, became the first hydraulic cartridge valve supplier of HydraForce valves among so many hydraulic cartridge valve manufacturers in Ningbo. AAK HYDRAULIC VALVE (94) 2021-10-25
AAK HYDRAULIC VALVE factory is equipped with high-precision imported CNC lathes and honing machines, designed many small fixtures and special processing equipment for assembly, the production efficiency is 30% higher than that of its peers. Moreover, AAK never cheat customers, ensure quality and delivery time, customer Steven doesn't want to find a second supplier anymore. For the foreign trade hydraulic valve orders, delivery time is very important and critical. The domestic hydraulic valve manufacturers are used to domestic sales. They are not too serious about the delivery date, the production is slow and the workers get off work at the fixed time. If it is urgent, nearly 90% of the hydraulic valve manufacturers will choose outsourcing processing. Different hydraulic valve manufacturers have different quality levels, so the quality of the hydraulic valves is uneven and the delivery time may still be delayed. Choose such a hydraulic valve manufacturer, the full quantity is not guaranteed, and the quality is also difficult to count on. At the beginning of 2020, one of our old customers introduced the American customer Steven to AAK HYDRAULIC VALVE. Steven mainly purchased many hydraulic check valves in the past 2 years. In previous years, he purchased hydraulic check valves in their country. Only the year before last, he started to develop hydraulic valve suppliers in Ningbo and Guangdong. He encountered problems. Some hydraulic check valve manufacturers have limited equipment, production does not conform to the process, and the accuracy of hydraulic valves is unstable, so they have been afraid to place orders. Steven learned from our website and the communication that AAK HYDRAULIC VALVE has several high-precision imported CNC lathes and many small processing equipment, the production line operates 24 hours, and the hydraulic valve technicians take two shifts, each process has strict operation standards, and the output can be 30% higher than that of peers. At the same time, it can ensure the quality of hydraulic valves. Steven placed an order for hydraulic check valves of more than 20,000 US dollars with AAK. It takes only 30 days for AAK HYDRALUIC VALVE to complete the order, because it is the first cooperation, he especially gave us 45 days to produce these hydraulic check valves and required that the delivery date cannot be postponed and the accuracy must meet the requirements. After 25 days, the mass production of the hydraulic check valves was completed 35 days in advance. Steven was a little surprised at the productivity of our hydraulic check valves. 2 months after he received the shipments, he sent us an email that his customers were very satisfied with the quality of the hydraulic check valves, which can be compared with #sun hydraulic #. Steven is pleased to tell us that in Ningbo, he will no longer consider looking for a second hydraulic check valve supplier.
