Welcome to oriental casting and forging(shandong) co., ltd. I, mr. Wang is glad to serve you
Description:
As one of the biggest manufacturers and exporters of grinding balls in china, we can produce several kinds of grinding ball 100000 ton annual and exports to more than twenty countries and areas such as japan, korea, canada, america, chile and south africa and has obtained a high reputation from the customers.
1. Passed the swiss sgs iso9001 international quality certification system
And iso14001 international environment certification system.
2. Good quality: high hardness, good wear resistance, no breakage, even wearing.
3. Applied field: mines, cement plants, power stations, chemical industries etc.
4. Stable supply and sales year-round make us can be your good supplier.
Product description:
Specifications:
Forged steel grinding balls
Size: 20mm-150mm
Brand material impact test endurance test surface core
Ak.J/cm2 times(5m) (min) (min)
Dt-2 60mn 13min 10000min 58 50
Dt-3 65mn 15min 12000min ≥60 50
Dt-4 b2 17min 12000min ≥60 52
Brand material c mn si cr s p
Dt-2 60mn 0.57-0.65 0.7-1.0 0.17-0.37 0.25 0.035max 0.035max
Dt-3 65mn 0.62-0.70 0.9-1.0 0.17-0.37 0.25 0.035max 0.035max
Dt-4 b2 0.70-0.85 0.7-0.8 0.17-0.37 0.2-0.7 0.035max 0.035max
If you are interested in my product, please send me your detailed information such as your drawing or detailed specifications, chemical composition requirement etc. And you will get our quickly reply
Casting iron balls include high chromium balls, medium chromium balls and low chromium balls.
Quality index of high chromium casting ball:
The chromium content of the high chromium ball is 10.0% or more. The carbon content is between 1.80% and 3.20%. According to national standards, the hardness of the high chromium ball must be no less than 58hrc, and the impact value should be greater than or equal to 3.0j/cm2. To achieve this hardness, the high chromium ball must be quenched and tempered at high temperature. At present, there are two methods for quenching high chromium balls in China, including oil quenching and wind quenching. If the test hardness of the high chromium ball is lower than 54HRC, it means that it has not been quenched.
Quality index of medium chromium casting ball
The specified chromium content of the medium chromium ball ranges from 3.0% to 7.0%, and the carbon content is between 1.80% and 3.20%. Its impact value should not be less than 2.0j/cm2. According to national standards, the hardness of the chrome ball should be greater than or equal to 47hrc. In order to ensure quality, medium chromium balls should be tempered at high temperature to eliminate casting stress.
If the surface of the iron ball is black and red, it proves that the iron ball has been tempered at high temperature. If the surface of the iron ball still has the metal color, we can judge that the iron ball has not undergone high temperature tempering treatment.
Quality index of low chromium casting ball
Generally speaking, the chromium content of the low chromium ball is 0.5% to 2.5%, and the carbon content is from 1.80% to 3.20%. Therefore, according to the national standard, the hardness of the low chromium ball should be no less than 45hrc, and the impact value should be no less than 1.5j/cm2. Low chromium balls also need high temperature tempering treatment to ensure quality. This treatment can eliminate casting stress. If the surface of the iron ball is dark red, it indicates that it has undergone high temperature tempering treatment. If the surface is still metallic color, it means that the iron ball has not been tempered at high temperature.
Casting iron balls are usually used in various large-scale mines, cement plants, chemical plants, power plants, quartz sand plants, silica sand plants, etc.
(1) Application
Alumina grinding media ball is mainly used in ceramic, glaze, paint, zirconia silicate, aluminum oxide, quartz, silicon carbide, talc, lime carbonate, kaolin, titanium and other materials grinding, and mechanical equipment accessories.
(2) Properties
High density, high hardness, low wear loss, regular shape, impact resistance, corrosion resistance, etc.
Chromium casting grinding ball
m 7%-10%
Size(|¦ì):10-130mm
Hrcy47
Industry fields:mining/coal grinding/other wet applications
3.High chromium 10%-14%
Size(|¦ì):10mm-130mm
Hrcy58
Industry fields: cement-dry grinding/mining/coal grinding/power stations/chemical industries/other wet applications
4.Special high chromium ¡y14%
Size(|¦ì):10-130mm
Hrcy60
Industry fields: cement-dry grinding/metallurgic mine/power stations/chemical industries or other wear big business
