Product Details

Specifications

1:Forged steel ball for grinding coal in power plate
2:diameter:20~150mm
3:HRC:50~65
4:material:steel
5:ISO9001:2008

Product performance

a) Even hardness, b) unbreakable

c) Grinding resistant, d) high impact value

e) High combined efficiency of grinding mill

Application fields

b) Metallurgical selection in mine

C) Grinding coal in power plate

D) Chemical industry and machinery

CHEMICAL ELEMENTS

C	Si	Mn	Cr	S	p
0.50~0.65	0.15~0.37	0.6~1.2	<=0.25	<=0.04	<=0.04
0.7~0.9	0.45~0.75	0.7~1.25	0.11~0.4	<=0.04	<=0.04

SPECIFICATION AND HARDNESS OF FORGING BALL

Nominal diameter(mm)

Diametrical tolerance(mm)

Weight of single forging ball in average(g)

Number of piece of one ton forging ball in average

Surface hardness(HRC)

IMPACT TIUGHNESS(j/cm2)

dia20

dia25

dia30

dia40

dia50

-1

110

263

513

31250

15625

9090

3802

1949

50~65

>=12

dia60

dia70

dia80

dia90

dia100

-2

888

1410

2104

2996

4110

1126

709

475

333

243

50~65

>=12

dia110

dia120

dia130

-2

5457

7102

9030

182

140

110

45~60

>=12

dia140

dia150

-3

11278

13871

45~60

>=12

Physical Property of Forged Steel Ball

Name	Materials	Impact Test(Ak.J/cm²)	Endurance Test Times(5m/T)	Surface Hardness (Φ25mm- Φ60mm)	Core Hardness (Φ25mm- Φ60mm)	Surface Hardness (Φ70mm- Φ100mm)	Core Hardness (Φ70mm- Φ100mm)	Breakage
DZ-1	50Mn	≥12	≥10000	≥56	≥35	≥56	≥28	<1%
DZ-2	60Mn	≥13	≥10000	≥58	≥38	≥58	≥29	<1%
DZ-3	65Mn	≥15	≥12000	≥60	≥42	≥60	≥30	<1%
DZ-4	B2	≥17	≥12000	≥60	≥52	≥60	≥50	<1%
DZ-5	75SiMn	≥16	≥12000	≥60	≥50	≥60	≥48	<1%
DZ-6	Wear-resistant Alloy	≥17	≥12000	≥60	≥54	≥60	≥52	<1%