50Kn Spring Compression Testing Machine

200 tones in different models. Portable models are very convenient and useful for site use where carrying frequently the specimens for testing in a standard laboratory is inconvenient and uneconomical. With special attachments, the machines can also be used for bricks, hallow or solid concrete blocks, using appropriate capacity machine. In general compression testing machine consists of a load frame with suitable platens and a pumping unit with pressure gauge, either hand operated or electrically-cum-hand operated. Load frame and pumping unit are connected by pressure pipes. Wooden packing

1. Size of concrete specimens for compression strength test Concrete cubic specimen: 150X150X150mm, 100X100X100mm, 200X200X200mm Cylindrical concrete specimen: diameter 150X300mm, diameter 100X200mm, diameter 200X400mm 2. Brief introduction of concrete compressive strength test procedure 1) Placing the concrete specimen---place the test specimen on the lower bearing block. Carefully align the axis of the specimen with the center of thrust of the spherically seated block. 2) Apply the load continuously and without shock until the specimen fails and record the maximum load carried by the concrete specimen during the test. Note the type of failure and the appearance of the concrete. 3.Relative test method GB/T 50081 standard for test method of mechanical properties on ordinary concrete ASTM C39 standard test method for compressive strength of cylindrical concrete ASTM E74 practice of calibration of force-measuring instruments for verifying the force indication of testing machine 4. Specifications for concrete compressive strength testing machine Max. capacity: 3000KN( lower or higher capacity can make to order) Grade of testing machine: grade 1 Distance between upper and lower compression platen: 320mm Stroke of piston:50mm Size of upper and lower compression platen:375X375mm Weight :about 900kg

1. Introduction and test principle of compression strength measuring The compression testing machine is to measure compression strength of corrugated boxes in the situation of pressure and protect functions of packages for the objects filled in the packages. Test principle: (1) Corrugated boxes compression strength test, loading to the corrugated boxes using a compression testing machine at a certain constant rate untill corrugated boxes are broken or till certain load or displacement are reached. (2) Corrugated boxes stacking test, loading a certain force to the corrugated box using a compression testing machine untill corrugated box is broken or sustain a certain time period. When measuring deformation of corrugated box during compression test, an original load should be set as a datum point. The datum point can refer to the following chart: Average compression force(N)Original force(N) 101-200 10 201-1000 25 1001-2000 100 2001-10000 250 10001-20000 1000 200001-100000 2500 2. Functions of compression testing machine This machine is applicable to metal, cementing compound, tubes, sectional bars, aerospace, petrochemical, waterproof rolls, wire and cable, textile, fiber, rubber, ceramics, food, mechanical packaging, geo-textile, film, wood, paper and other industries and quality supervision department, and it also can be used in college for teaching demonstration. 3. Specification of compression testing machine 1 Max. Load 20KN 2 Resolution of test force 1/300000 3 Resolution of displacement 0.001mm 4 Precision of crossbeam displacement 0.5% 5 Precision of deformation 0.5% 6 Measuring range of test force 1%-100%FS 7 Relative error of test force 1% 8 Relative error at zero point 0.5% 9 Speed of crossbeam 0.01-500mm/min 10 Precision of crossbeam speed 1% 11 Speed range of load 0.005%-5%FS/s 12 Precision of load speed When speed is less than 0.05FS/s, precision is within 1% of set value, when speed is more than 0.05FS/S, precision is within 0.5% of set value 13 Speed of deformation 0.005%-5%FS/s 14 Precision of deformation speed When speed is less than 0.05FS/s, precision is within 1% of set value, when speed is more than 0.05FS/S, precision is within 0.5% of set value 15 Stroke of crossbeam 900mm 16 Effective tensile height 650mm 17 Effective test span 400mm 18 Effective compression height 800mm 19 Diameter of compression platen 100mm 20 Voltage and power 220V,50Hz, 700W 21 Dimension of main machine 650X450X1650mm 22 Weight of main machine about 300kg

2. This testing machine mainly use computer and software to control the whole system, which can make the accuracy more precise. The hydraulic cylinder is imported from germany, which is high flow, good circularity and high availability. This machine can be used to test the heavy duty springs of haulage motor. This machine can adopt the electro-hydraulic servo testing system to operate. 3. The all parts of equipment can be maintained and repaired. The main functions of this machine is as follows, it can use fixed deformation or fixed load. Measurement system can be automatic zero, automatic calibration. Computer real- …

This machine is produced in wintime machinery co., ltd. It can test a variety of heavy duty springs such as locomotive springs¡¡écar springs or leaf springs. This testing machine mainly use computer and software to control the whole system, which can make the accuracy more precise. The hydraulic cylinder is imported from germany, which is high flow, good circularity and high availability. This machine can be used to test the heavy duty springs of haulage motor. This machine can adopt the electro-hydraulic servo testing system to operate. The all parts of equipment can be maintained and repaired. The main functions of this machine is as follows, it can use fixed deformation or fixed load. Measurement system can be automatic zero, automatic calibration. Computer real-time display test amplitude, test frequency, the number of fatigue. The load capacity is up to 500kn, and the test space is about 600mm(wide)* 1700mm(length), which can be adjust up and down. The max.Test amplitude is ¡¨¤40mm, and the frequency is about 0.1hz to 4hz. The maximum power should be 380 v ac, 110 kw. This machine can match different kinds of heavy duty springs such as locomotive springs¡¡écar springs or leaf springs.

We have been in this line for many years, our products is very competitive and resonable . Wooden cases, 100kg, 620x460x1530

2.The operation of this machine is controlled by the computer, driving with the servo motor and transmitting precisely with ball screw. Its max load is 2000 kn(200 ton). Its testing space can be up to 2800 mm. This machine is available for three closed-loop control in the aspect of test force, displacement and speed. It uses the load cells and optional length gage. This machine can be used to test the heavy duty springs, spring sets and the aircraft gear landing. It is worth mentioning that this machine is equipped with specialized measurement and control system that is used to test the compressibility and turning of the aircraft gear landing. …

3. It is specially designed for testing heavy duty springs of railway rolling stock such as hi-speed railway springs or locomotive suspension springs or vehicle coil springs.Spring vertical & lateral drive and spring vertical force , spring lateral force deflection and spring stiffness measurement are available 4.Drawing of axial load , displacement or deflection , lateral force displacement curve is isochronous. Force sensor and ac servo motor and high precision ball screw vertical and lateral load , the whole process is automatic. …

Computer controlled heavy duty spring testing machine researched by wintime machinery co., ltd for vertical and lateral of railway spring also called locomotive springs which obtain proprietary technology and is corresponding with the european standard en13298. It is specially designed for heavy duty springs such as hi-speed rail springs or locomotive springs . Vertical & lateral drive and vertical force , lateral force deflection and stiffness measurement are available.Drawing of axial load , displacement or deflection , lateral force displacement curve is isochronous.Force sensor and ac servo motor and high precision ball screw vertical and lateral load , the whole process is automatic.