Product Details

Delivery Time:3-5 days
Certification:CE,FCC,MSDS

High chrome Dia 20-150mm casting iron ball from China for cement plant

Cast Iron Balls Specifications

a) unbreakable
b) grinding resistant
c) high impact value
d) high combined efficiency of grinding mill

Forged Grinding Steel Balls

1) In general, forged steel ball has high hardness: surface hardness to 55-68 HRC, volume hardness of 50-63 HRC

2) Impact toughness high: impact toughness more than 12 J / cm2.

3) Broken rate is low: the actual broken rate is not higher than 1%.

4) Loss of grinding forged steel ball round rate is low.

National Standards

Company measured test results

Chemical

Composition

0.72-0.82

0.17-0.37

0.7-0.8

≤0.035

0.28-0.6

	Specification (mm)	Surface Hardness	Hardness of Heart	Company measured test results	Remark
Surface Hardness	Hardness of Heart
1	40	60-65	59-64			National Standards High carbon low alloy steel forging (rolling) ≤90mm: surface hardness HRC≥58, Hardness of Heart≥50; >90mm: surface hardness HRC≥56, Hardness of Heart≥48.
2	50	60-65	58-63	64.5	63
3	60	60-65	58-63	66	64-65
4	70	60-65	58-63
5	75	60-65	58-63
6