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Forged Grinding Steel Balls 20-150mm Diameter High Hardness

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Address: Lejia,Puji Town,Zhangqiu Jinan city,Shandong Province,China

Contact name:Stevin Liu

Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd

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Forged Grinding Steel Balls 20-150mm Diameter High Hardness

Country/Region	china
City & Province	jinan shandong

Product Details

Forged Grinding Steel Balls 20-150mm Diameter High Hardness

Forged Grinding Steel Balls are widely used in metallurgical mines, cement building materials, thermal power generation, flue gas desulfurization, aerated concrete, magnetic materials, chemical industry, coal water slurry, pellet, slag.

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

Type and chemical composition of forged balls

Name	Material	Chemical composition						Hardness
Name	Material	C	Si	Mn	S	P	Cr	HRC
forged ball	B3	0.58-0.66	1.6-1.9	0.65-0.8	<0.025	<0.025	0.7-0.9	58-63
	B2	0.72-0.85	0.17-0.37	0.7-1.0	<0.04	<0.04	0.4-0.6	58-63
	60Mn	0.55-0.65	0.17-0.37	0.7-1.0	<0.04	<0.04	<0.25	58-62
	45#	0.42-0.50	0.17-0.37	0.5-0.8	<0.035	<0.035	≤0.25	50-55

Hardness distribution

Material	Dia25mm-Dia50mm		Dia60mm-Dia90mm		Dia90mm-Dia125mm
	Dia25mm-Dia50mm		Dia60mm-Dia90mm		Dia90mm-Dia125mm
	surface	core	surface	core	surface	core
B3	/	/	/	/	56-63	45-53
B2	60-65	58-62	58-63	50-55	56-60	40-45
60Mn	58-63	55-60	58-63	40-45	56-60	30-35
45#	55-58	45-55	55-58	30-35	50-55	25-30

Type and chemical composition of cast iron balls

Name	Material	Chemical composition						Hardness
Name	Material	C	Si	Mn	S	P	Cr	HRC
Cast ball	Special Hi-Cr	2.0-3.0	<1.0	0.5-2.0	≤0.06	≤0.08	>20	58-64
	Special Hi-Cr	2.0-3.0	<1.0	0.5-2.0	≤0.06	≤0.08	>15	58-64
	High-Cr	2.0-3.2	<1.0	0.5-2.5	≤0.06	≤0.08	>10	58-62
	Medium-Cr	2.0-3.2	<1.0	0.5-2.5	≤0.06	≤0.08	≥5	50-55
	Low-Cr	2.2-3.4	≤1.2	0.5-1.5	≤0.06	≤0.08	1.0-1.5	42-46

Hardness distribution

Material	Dia25mm-Dia50mm		Dia60mm-Dia70mm		Dia80mm-Dia90mm
	Dia25mm-Dia50mm		Dia60mm-Dia70mm		Dia80mm-Dia90mm
	surface	core	surface	core	surface	core
Special hi-CR:>20	60-64	59-63	60-64	58-62	60-64	57-61
Special hi-CR:>15	58-62	57-61	58-62	56-60	58-62	50-59
High Cr:>10	58-62	57-61	58-62	56-60	58-62	50-59
Medium Cr:≥5	50-55	49-54	50-55	48-53	50-55	47-52
Low Cr:1-1.5	42-46	41-45	42-46	40-44	42-46	39-43

Company Profile

Jinan Zhongwei Casting And Forging Grinding Ball Co.,LTd established in 2000, as a professional grinding media manufacturer, we are devote to development and production wear-resistant steel balls for ball mill. Main products: Forged Steel Ball, Cast Steel Ball (High, Medium, Low Chrome), Casting Cylpebs, Grinding Rods.

We have obtained ISO 9001:2008 International Quality System Authentication. To ensure the excellent performance of grinding balls, our company have advance quality control and test equipments, and complete quality inspection system.

Strength casting high quality goods and good faith forging magnificent. Our aim is to insist on the theory of "Quality first, Honesty and Trust Bring Mutual Benefits". We are trying best to supply customers from both at home and abroad with high quality products and satisfactory service.