High Chrome Mining Grinding steel Balls With high Impact Resistance

Manufacturer : Jinan Zhongwei 

 

As a leading global manufacturer of grinding steel balls , we offer advanced, reasonable solutions for any size-reduction requirements including quarry, aggregate, and different kinds of grinding steel balls ,grinding rods, grinding cylpeb .

Our Services

 We supply forged steel grinding steel balls with diamater 20mm-150mm.

We supply casted iron grinding steel balls with diamater 20mm-150mm.

We supply grinding rods made by C45 Steel ,60Mn Steel,B2 Steel,B3 Steel.

We supply grinding cylpeb (Cylinder) with High Chrome,Low Chrome,Medium Chrome

Advantages of Jinan Zhongwei Grinding Steel Balls

1.Electric Furnace as compared to coal 
2.Fair Market Price 
3.Quality guarantee 
4.On time delivery 

 

Type and Chemical Composition of Forged grinding media Ball

Name	Material	C	Mn	Si	Cr	S	P
ZW-1	50Mn	0.48-0.56	0.70-1.0	0.17-0.37	≤0.25	≤0.035	≤0.035
ZW-2	60Mn	0.57-0.65	0.70-1.0	0.17-0.37	≤0.25	≤0.035	≤0.035
ZW-3	65Mn	0.60-0.70	0.90-1.2	0.17-0.37	≤0.25	≤0.035	≤0.035
ZW-4	B2	0.70-0.85	0.70-0.80	0.17-0.37	0.2-0.7	≤0.03	≤0.03
ZW-5	75SiMn	0.70-0.90	0.70-1.20	0.4-0.8	≤0.25	≤0.03	≤0.03
ZW-6	Wear-resistant Alloy	0.50-0.65	0.4-1.0	1.4-1.8	0.9-1.2	≤0.03	≤0.03

 

Physical Property of Forged steel grinding media Ball

Name	Material	Impact Test(Ak.J/cm²)	Endurance Test Times(5m/T)	Surface Hardness (Φ25mm- Φ60mm)	Core Hardness (Φ25mm- Φ60mm)	Surface Hardness (Φ70mm- Φ100mm)	Core Hardness (Φ70mm- Φ100mm)	Breakage
ZW-1	50Mn	≥12	≥10000	≥56	≥35	≥56	≥28	<1%
ZW-2	60Mn	≥13	≥10000	≥58	≥38	≥58	≥29	<1%
ZW-3	65Mn	≥15	≥12000	≥60	≥42	≥60	≥30	<1%
ZW-4	B2	≥17	≥12000	≥60	≥52	≥60	≥50	<1%
ZW-5	75SiMn	≥16	≥12000	≥60	≥50	≥60	≥48	<1%
ZW-6	Wear-resistant Alloy	≥17	≥12000	≥60	≥54	≥60	≥52	<1%

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

 

 Type and Chemical Composition of Cast iron grinding media Ball

 

NAME	BRAND	CHEMICAL COMPOSITION(%)
		C	Si	Mn	Cr	Mo	P	S
High Chromium Cast Ball	ZQCr26	2.0-3.4	≤1.2	≤1.5	22-28	≤1.5	≤0.10	≤0.10
	ZQCr20	2.0-3.4	≤1.2	≤1.5	17-22	≤1.5	≤0.10	≤0.10
	ZQCr17	2.0-3.4	≤1.0	≤2.5	15-17	≤1.5	≤0.10	≤0.10
	ZQCr13	1.7-3.4	≤1.0	≤2.5	11-14	≤1.5	≤0.10	≤0.10

 

 Physical Propertof Casting grinding media Ball

MAME	BRAND	HARDNESS		IMPACT VALUE ak(J/cm2)	METALLOGRAPHIC ORGANIZATION	BALLS
						FATIGUE LIFE
		QUENCHING STATE(A)	NO- QUENCHING STATE(A)			IMPACT
High Chromium Casting Ball	ZQCr26	≥60	≥45	≥4.0	M+C	≥8000
	ZQCr20	≥60	≥45	≥3.5		≥8000
	ZQCr17	≥60	≥49	≥3.0		≥8000
	ZQCr13	≥60	≥50	≥2.3		≥8000

 

Grinding Media Packaging

Big bags (1000Kg Per Bag)

Steel drums (850~920Kg Per Drum)

 

 

Grinding Media Balls Applied Fields

 

1. Mining

2. Cement Plants

3. Chemical Industries

4. Power Stations 
 

Shipping and delivery 

 

Port of loading:Qingdao Port,China

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

Partial shippment allowed

 

FAQ

· Payment terms : T/T (30% DP,balance against copy of B/L.;  L/C 

· Samples :  Free samples are provided for test before trial order 

· MOQ : 1 Ton

 

For more information about our products ,Pls feel free to contact us.

 

TEL: +86 15588873848

Contact : Jessise