Grinding steel balls like hot rolled steel grinding balls are used to assist in the extraction process for many metals such as gold, copper, lead, zinc, iron, nickel, tin, chrome and silver. In addition to metalliferous processing, balls are used for grinding coal in power stations, lime and clinker in the cement industries and base materials in the building products industry. A full range of hardness can be provided in standard sizes, the ball hardness profiles to maximize wear and impact performance, customized product is available to meet milling and ore conditions. The balls have gotten high reputations for their high hardness, good wear resistance, no breakage etc..
1.Product Name: Forged steel balls
2.Standard ball sizes are as follows:
Ball Diameter (nominal) mm-----(nominal) Inches
20mm 4/5 inch
25mm 1 inch
30mm 1 1/4 inch
40mm 1 1/2nch
50mm 2 inch
60mm
65mm 2 1/2nch
70mm
76mm 3 inch
80mm 3 1/4nch
90mm - 3 1/2nch
100mm 4 inch
110mm-115mm 4 1/2 inch
120mm 4 3/4nch
125mm-127mm 5 inch
130mm-133mm 5 1/4 inch
140mm 5 1/2inch
150mm 6 inch
3. A full range hardness we provided in standard sizes:
Mean Hardness:
Brinell Rockwell C
BHN400 HRC 43
BHN480 HRC 50
BHN560 HRC 55
BHN615 HRC 58
BHN670 HRC 61
4. High efficiency alloy forged steel balls
Chemical Elements (%): C:0.48~0.65 Mn: 0.6-1.20; Si: 0.17-0.37; P: 0.04 Max, S:0.04 Max; Cr: 0.25 Max
5. High carbon alloy forged steel balls
Chemical Elements (%): C: 0.55-0.90; Mn: 0.7-1.0; Si: 0.17-0.37; P:0.035 Max, S:0.035 Max; Cr: 0.28-1.20
6. Products all-round properties: High Hardness, Good Wear Resistance, Even Wearing
Breakage: 2.0% Max
Dropping test: 10000 times minimum with 3.5 meter dropping test machine.
Impact test: Ak.=12 J/CM2 Minimum
7. Packages: By flexible container bags (1000kg/bag), or by steel drums (850kgs-900kgs/drum)