Trademark C Si Mn P S Cr Ni Cu Al
B-B 0.005 0.01 0.12 0.009 0.006 0.01 0.01 0.02 0.03
B-C 0.002 0.01 0.03 0.005 0.005 0.01 0.01 0.01 0.01
Trademark C Si Mn P S Cu Al N
B-D 0.003 0.004 0.05 0.01 0.01 0.025 0.0007 0.0028
B-E 0.002 0.001 0.085 0.013 0.0058 0.024 0.0019 0.0046.
Currently, most of the enterprises utilize the round bar steel rolled by the steel mill as the steel grinding rod directly. The round bar steel has very low hardness of only 12HRC to 25HRC, and the internal stress, leading to broken damage easily and low wear resistance property. Meanwhile, the round bar steel comes with some defects such as loose and not compact internal structure. Just because of that, using the round bar steel for grinding would cause a series of problems such as large wear, easily bending, breaking, winding, two tapering ends, low productivity, failing to reach the expected qualified rate, heavy workload of the follow-up magnetic separation process, etc.
Features
1.The wear resistant effect of the new-type alloy wear resistant steel grinding rod is 1.5 to 2 times stronger than that of the rolled steel bar. Marked by excellent wear resistant property, the product can save a lot of cost for the customer.
2.It is manufactured by using the latest production method. The dimension and the specification can be adjusted in accordance with the requirements of the customers. The largely improved flexibility can save the unnecessary waste.
3.The product can serve for a longer time, economize the production cost and mitigate the labor intensity of the workers. Moreover, it eliminates the need for stopping the rod mill to add the new steel grinding rod every day, which is conducive to largely enhancing the productivity.
Our domestic clients are full of praise for the product. Our product order process would follow the steps below.
1.Communicate with the customer to understand the requirements of customers to the product regarding length, diameter, quantity, etc.
2.Order the raw material from the steel mill.
3.Carry out the inspection for the incoming raw material.
4.After being inspected to be qualified, the raw material is processed with professional quenching and high temperature tempering, heat treatment, straightness adjusting, and others by using the professional equipment and technology.
5.Inspect the finished steel grinding rod about the hardness, impact value, drop test, etc.
6.After being approved, all the finished products are stored into the warehouse for delivery.
The forged steel grinding ball is excellent in surface quality, toughness, and resistance to impact and abrasion. It won't crack and lose circularity easily. The forging and stamping method that we use is that heating the metal until the temperature reaches 1050ºc (±50 ºc), and utilizing the metalforming machinery to exert pressure onto the metal blank, then the metal blank coming out with plastic deformation to become the forge piece with certain mechanical properties, shape and dimension.
The forging can eliminate the defects such as porous as-cast microstructure generated during the smelting process of the metal, and optimize the microstructure. Meanwhile, as a result of the preservation of the complete metal flow line, the forge piece has superior mechanical performance to the casting with the same material. The forged steel grinding ball must use the super wear resistant material to ensure the abrasion resistance, such as the high-carbon steel materials compliant with the national standard, or the high wear resistant alloy steel material researched and developed independently by some companies themselves.
Our firm m/s razzak & company export minerals products.Our main products to sale are copper ore, lead ore, iron ore, iron slage. Mill scale, ilminite sent. If you are interested to purchase please contact us.
+92-3039105785
1.Specification:dn80-dn1600mm
2.Length:as per demand
3.Material:15cr2mo, 21crmo10, 30crmo
4.Usage:the pipe mould is mainly used for producting the ductile iron pipes.
Casting part of a pump body for marine and oil industry;
Casting type: silica sol lost wax process;
Material: ca15 / 410 stainless steel;
Weight: 15kg;
Ped/ad2000 certificated;
Chemical composition tested by german spectrometer;
Ndt test (x rays, dye test etc) available.
Weight: 15kg.
Heat number tracing
Maximum cast size
500*500*350mm
Casting weights
20g~80kg
Standards
Astm, jis, din, bs, mil
Wall thickness
1.5-2mm min
Casting process type
Silica sol lost wax casting
Machining
Cnc machining, cnc lathe
Tolerances
Raw casting material according to vdg p690. Can achieve tighter tolerance by cnc machining.
Ndt service
Dye inspection, x ray inspection, ultrasonic inspection etc
Surface finish service
Pickled, passivated, zinc plating, black phosphating , vibration polishing, electro polishing, satin polishing, hand polishing
Mzt learnica a.D. Skopje is stakeholder company in private ownership for manufacturing of castings from gray, ductile iron and nonferrous metals, with an almost 70 years tradition.We have implemented fully encircled technological line starting from manufacturing pattern equipment, core making, moulding, pouring, shot blasting, machining, coating, packing, and warehousing in own store for selling.
Nmzt learnica a.D. Skopje has qualified labour force which is in system of continuous education for performing of following tasks:
Manufacturing of pattern foundry equipment from wood, plastics and metal.
Manufacturing of cores with co2 procedure and shell procedure. Moulding on lines (800x1000; 1200x1600; 800x800; 630x500 and hand moulding).
Own plant for epoxy coating.
Own plant for classic painting.
Own plant for machining, lapping, milling, and shave.
