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

          high chrome hot rolling steel balls alloy casting grinding ball for mining

  Jinan zhongwei casting and forging grinding ball Co.,ltd, as the powerful grinder of world’s mining, 

specializes in the production of the forged steel ball, cast iron ball, cylpebs and grinding rods, which 

are widely used in the mining fields, chemical plant ,power station and building material industries .

We have  exported to more than 20 countries such as South Africa, Australia, Chile, Kuwait, UAE,

                                         Russia, Malaysia, Korea and Philippine etc.

We are one of the largest factory specialized in producing Forging Grinding Media Ball, Rolling Grinding Media Ball and Casting Grinding Media Ball in China. It was founded in 2000, located in Zhangqiu City, Shandong Province, China. Annual Production Capacity is 50,000 metric ton. There are 180 employees, covering an area of 15,000 square meters. Our products have been exported to more than 20 countries and got a lot of praise. We have large-scale production workshop, advanced production equipment and perfect quality assurance system. Our company has passed ISO9001:2000 quality system authentication and we always keep sincere service promise.

1. Features of forging and casting grinding media balls:

1). Even high hardness 
2). Good wear-resistance

3). Unbreakable 
4). High impact value

5). Production Capacity: 50,000mt per year

6). Low price

2. Applied fields of forged grinding balls:

 a) Mines; b) Cement plants; c) Power stations; d) Chemical industry

3. Raw Materials:

B2; B3; B4; 60Mn; Chrome Iron

4. Specifications of our products as follows:

PRODUCTS	SURFACE HARDNESS	CORE HARDNESS	CHEMICAL COMPOSITION
1) 60Mn Forged grinding ball	HRC58-65	≥HRC44	C: 0.52-0.65; Si: 0.15-0.37; Mn: 0.6-1.2; S & P: 0.04Max; Cr: 0.25Max
2) B2 Forged grinding ball	HRC60-68	≥HRC55	C: 0.75-0.90; Si:0.17-0.37; Mn:0.7-0.9; P: 0.035 MAX; S: 0.035MAX; Cr:0.40-0.70.
3) B3 Forged grinding ball	HRC60-68	≥HRC55	C:0.55-0.65; Si:0.2-0.37; Mn:0.75-0.9; Cr:0.85-1.2;S/P≤0.03;
4) B4 Forged grinding ball	HRC60-68	≥HRC58	C:0.58-0.66; Si:1.6-1.9; Mn:0.65-0.80; Cr:0.7-0.9; S/P≤0.03;
3) High chrome cast grinding ball	HRC58-65	≥HRC55	Cr:11-27; C: 2.0-3.0; Si:1.0Max; Mn: 0.5-1.5; S & P:0.10Max;
4) Low chrome cast grinding ball	HRC48-55	≥HRC46	Cr:1-3; C: 2.2-3.6; Si:1.0Max; Mn: 0.5-1.5; S & P:0.10Max;
5) Medium chrome cast grinding ball	HRC50-60	≥HRC48	Cr:4-10; C: 2.2-3.6; Si:1.0Max; Mn: 0.5-1.5; S & P:0.10Max;

5. Diameter, Diametrical tolerance, Weight, Impact toughness of forged grinding balls

Nominal diameter (mm)	Diametrical tolerance (mm)	Weight of Single of grinding ball in average	Number of piece of One ton grinding ball in average	Impact toughness
DIA 20 DIA 25 DIA 30 DIA 40 DIA 50	+2 -1	32 64 110 263 513	31250 15625 9090 3802 1949	≥12
DIA 60 DIA 70 DIA 80 DIA 90 DIA 100	+3 -2	888 1410 2104 2996 4110	1126 709 475 333 243