forged grinding steel balls

Grinding steel balls like forged 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 1/2 inch
50mm 2 inch
60mm
65mm 2 1/2 inch
70mm
76mm 3 inch
80mm 3 1/4 inch
90mm - 3 1/2 inch
100mm 4 inch
110mm-115mm 4 1/2 inch
120mm 4 3/4 inch
125mm-127mm 5 inch
130mm-133mm 5 1/4 inch
140mm 5 1/2 inch
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: 0.72-0.90; Mn: 0.7-1.0; Si: 0.17-0.37; P: 0.035 Max, S: 0.035 Max; Cr: 0.28-0.60

6. Products all-round properties: High Hardness, Good Wear Resistance, Even Wearing;
Breakage rate of ball: 2.0% Max
Dropping test: 10000 times minimum with 3.5 meter dropping test machine.
Impact fatigue life test: Ak. =12 J/CM2 Minimum

7. Packages: By flexible container bags (1000kg/bag), or by steel drums (850kgs-900kgs/drum)

Note: Technical staff in consultation with the customer can advise the optimum product for your application, if possible please feel free to contac us.