Specifications

1:grinding media steel balls
2:Endurance test times>10000
3:Breakage rate<1%
4:Heat treatment: cycles
5:ISO9001:2008

Forged grinding ball Hardness(DIA40MM-150MM)

(SIZE)	(SURFACE)	(CORE)
DIA40-60MM	HRC60-64	HRC59-63
DIA70-80MM	HRC60-64	HRC58-62
DIA90-100MM	HRC60-64	HRC57-61
DIA110-140MM	HRC55-60	HRC52-58

 

 

(Forged Grinding Ball)Chemical Elements:

Material	C	Si	Mn	Cr	S	P
B2	0.70%-0.85%	0.17%-0.37%	0.70%-0.80%	0.20%-0.70%	≤0.035%	≤0.035%
65Mn	0.62%-0.70%	0.17%-0.37%	0.90%-1.20%	<0.25%	≤0.035%	≤0.035%
60Mn	0.57%-0.65%	0.17%-0.37%	0.50%-0.80%	<0.25%	≤0.035%	≤0.035%
45#	0.42%-0.50%	0.17%-0.37%	0.50%-0.80%	<0.25%	≤0.035%	≤0.035%
75SiMn	0.70%-0.90%	0.4%-0.8%	0.70%-1.2%	<0.25%	≤0.035%	≤0.035%
Wear-resistant Alloy	0.50%-0.65%	1.4%-1.8%	0.4%-1.0%	0.9%-1.2%	≤0.035%	≤0.035%

 

 

Forged Grinding Ball Specifications

(Nominal diameter )    (mm)	Diameter Tolerance(mm)	Weight of single forging ball in average)	Number of piece of one ton forging ball in average	Surface hardness (HRC)	Impact toughness (j/cmφ2)
Φ20 Φ25 Φ30 Φ40 Φ50	+2 -1	32 64 110 263 513	31205 15625 9090 3802 1949	50-65	≥12
Φ60 Φ70 Φ80 Φ90 Φ100	+3 -2	888 1410 2104 2996 4110	1126 709 475 333 243
Φ110 Φ120 Φ130	+4 -2	5457 7102 9030	182 140 110	45-60
Φ140 Φ150	+4 -3	11278 13871	88 72

 

Forged steel grinding  balls Raw Materials: 60Mn, 65Mn, B-II.

 

 

 Forging steel grindind balls Packing

 

 

Certificate of quality   

 

 

 

The implementation of product standards YB/T091-2005

 Forged Steel Grinding ball Process Line  

 

 

Our main products (25MM-150MM Forged Grinding Steel Ball)

 

 

 Production and Detection equipment

  

 

Specific characteristics of the Forged steel  grinding balls:

 

1, The overall high hardness: the hardness can reach 55-67HRC, volume hardness reaches 50-63HRC, and the average

 hardness gradient distribution.

 

2, The impact toughness can reach  12J/ cm .

 

3, Low broken rate: crush resistance is the general casting grinding ball 10 times, ball impact more than 20000 times the

 number, the breakage rate of not more than 1%.

 

4, No deformation:  Forged steel grinding balls not roundness from beginning to the end.

 

Welcome customers from both at home and abroad to come to negotiate business with us and visit our factory ! 

 

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