Breif Description:

1.Diameter range of forged steel balls: 20mm-150mm

2. Features of forged steel balls:

a)high hardness b)good wear-resistance c)no breaking d)long life span

3. Appllication field:

a) Metal Mines b) Cement plants c) Water coal slurry d) Power stations e) Chemical industry

4. Type and chemical composition

grinding balls as follows:

1) High Hardness: Surface hardness: HRC58-68 HRC, volume hardness HRC55-65.

2) High Impact Toughness: The impact toughness of our grinding balls is more than 12 J / cm2.

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

4) Good wear-resistant and lower wear rate.

Chemical composition:

Material	C	Mn	Si	Cr	S	P
60MN	0.57-0.65	0.70-1.0	0.17-0.37	0.25 max	0.035max	0.035max
65MN	0.60-0.70	0.90-1.20	0.17-0.37	0.25 max	0.035max	0.035max
75Mn	0.72-0.92	0.17-0.37	0.7-1.0	0.4-0.6	0.035max	0.035max
75MnCr	0.70-0.85	0.7-0.8	0.17-0.37	0.2-0.7	0.03 max	0.03 max
75SiMn	0.70-0.90	0.7-1.2	0.4-0.8	0.25 max	0.03 max	0.03 max

Specifications:

Nominal diameter (mm)	Diameteical tolerance (mm)	Weight of Single of forging ball in average	Number of piece of One ton forging ball in average	Surface hardness	Impact toughness
DIA 20 DIA 25 DIA 30 DIA 40 DIA 50	+2 -1	32 64 110 263 513	31250 15625 9090 3802 1949	55-65	≥12
DIA 60 DIA 70 DIA 80 DIA 90 DIA 100	+3 -2	888 1410 2104 2996 4110	1126 709 475 333 243
DIA 110 DIA 120 DIA 130	+4 -2	5457 7102 9030	182 140 110
DIA 140 DIA 150	+4 -3	11278 13871	88 72

Raw Material:

Strict quality control of steel material from BIG STEEL FACTORY GROUP.You know the good grinding balls quality depends on the good raw material.

Testing:

Quality control for each production shift (4hours/Shift);

Hardness, chemical elements and impact testing after production for each production shift;

SGS –third party testing before each delivery

Packing:

Container bags(Net weight:1000KGS) or Steel drums(850-900KGS) or in clients' requirements

Production process

Our Services

1. Free samples for your test before orders;

2. Soonest delivery time ;

3. Cooperate with many famours shipping companies,and sent the goods to your port safe and in time;

4. Any feedback after sales would get our soonest reply.

WE LOOK FORWARD TO THE OPPORTUNITY TO DISCUSS HOW WE CAN BECOME A PARTNER IN YOUR SUPPLY CHAIN SOLUTION .