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
