3 Inch Dia 20-150 mm Forged and cast Grinding Steel Ball Good Wear Resisitance

Brand Name:ZW

Certification:ISO9001 SGS

Model Number:45# 60Mn B2 B3,Chrome

Minimum Order Quantity:1 tonne

Delivery Time:5-7 days

Place of Origin:Jinan

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Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd

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Location: Jinan Shandong China

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

Supplier`s last login times: within 48 hours

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Product Details

3 inch Good Wear Resisitance forged and cast Grinding Steel Ball

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

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

Packaging & Shipping

Packing: Container bags or steel drums or others.
For Container Bag, Net weight 1000Kgs ,Gross Weight 1002KGS ,Measurement 0.4CBM
For Steel Drums ,Net weight 850-950Kgs ,Gross Weight 865-965KGS ,Measurement 0.3CBM .

Shipping and delivery
Port of loading:Qingdao Port,China

Delivery time : Normally 2-3 weeks after down payment received.
Partial shippment allowed