High Impact Toughness Grinding Balls for Mining Diameter 15-150mm B2 manufacturer from China Oriental Casting and Forging Co., Ltd.

High Impact Toughness Grinding Balls for Mining Diameter 15-150mm

Place of Origin:

Shandong, China (Mainland)


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Product Detail

Model No.: B2

Diameter15-150mm high Im

Diameter15-150mm high Impact Toughness B2 material Grinding Balls for Mining

Breif Description:
Size: 20-150mm Inspection: SGS/BV/TUV
Origin: Shandong Province, China

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;

DIA 20 DIA 25 DIA 30 DIA 40 DIA 50	+2 -1			32 64 110 263 513		31250 15625 9090 3802 1949	≥12
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 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

Feature:

1) High Hardness: The surface hardness of forged and rolling balls is to 60-65 HRC and volume hardness is to 60-63 HRC

2) High Impact Toughness: The impact toughness is more than 12 J/cm2;

3) Low Broken Rate: The actual broken rate is not higher than 1%;

4) Even Wear-resistance: The loss of ball round rate is 50-300 g/ton.

The production process of the forged grinding balls
1). Raw material:
All the material is qualified with certificate and made in the Chinese largest steel production enterprise.
2). Different steel specifications ccording to the clients's requirements.
Main Steel Material :C45 Steel;60Mn Steel;B2 Steel
3). Steel Cutting:
the steel bars should be cut into small pieces according to the size of steel balls required by the order.
4). Heating:
we use the electric furnace instead of the traditional coal stove, the biggest advantage is that all the steel bars can accept the most approriate temperature during the heating progress. It affect the hardness and toughness directly.
5). Hammer forging:
The raw material is forged to a certain deformation by the air hammer, when the compression ratio increased, the micro-structure become more compact so that the hardness and the toughness can be improved.
6). Heat treatment:
Both the water quenching heat treatment production line and our own temperature control technics are important.
We have mature production technicians responsible for the heat treatment process as we know this process affect the grinding balls performance directly.
7). Quality Control.
Raw material test before production
Hardness test Drop Test Impact Test Core pulling Test after production
SGS test before delivery
Certificate: ISO 9001:2008

Shipping:

1.Port of Loading: Qingdao Port,China

2.Partial shippment allowed

3.By DHL/TNT express for samples order.Door to door to delivery;

4.Appointed freight forwarder by customers is acceptable

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 .