casting steel balls

Grinding balls included one kind named chrome cast iron grinding balls, three series (High/Middle/Low chrome cast iron grinding balls) can be provided in standard sizes, they 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, especially for lime and clinker in the cement industries and base materials in the building products industry. 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. Standard ball sizes are as follows

Ball Diameter (nominal) mm-----(nominal) Inches

20mm 4/5 inch

25mm 1 inch

30mm 1 1/4nch

40mm 1 1/2nch

50mm 2 inch

60mm

70mm

80mm 3 1/4inch

90mm 3 1/2 inch

100mm 4 inch

110mm 4 1/4 inch

120mm 4 3/4inch

2. A full range hardness we provided in standard sizes

Minimum Hardness

Brinell Rockwell C Chromium (%)

BHN400 HRC 43 non-chromium BHN480 HRC 50 Cr: 1.0~3.0

BHN560 HRC 55 Cr: 7.0~10.0

BHN615 HRC 58 Cr: 10.0~16.0; Cr: 16.0~22.0; Cr: 22.0~28.0

3.Products all-round properties: High Hardness, better wear resistance, even wearing

Breakage rate of ball: 2.0% Max

Dropping test: 8000 times minimum with 3.5 meter dropping test machine.

Impact fatigue life test: Ak. =3 J/CM2 Minimum

4. 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 contact us.