Cast Iron Grinding Balls Low Chrom Cast Balls Chrom Grinding Balls
Huafu Group is located in Zhangqiu City, Shandong Province, 45
Kilometers to the Jinan downtown, next to the 309 National Highway,
enjoying firsthand Information and convenient traffic. Our company
covers 80000 square meters, with over 100 employees, annual
production capacity of 100000 tons and registered capital of
seventy million yuan. The group company consists of Jinan Huafu
Forging Co.,Ltd,Shandong Huafu Steel Ball Co.,Ltd and Jinan Xing
Tigers of Papermaking Machinery Co.,Ltd.We mainly produces forged
steel balls, cast iron balls, steel cylpebs, grinding rods, mill
liners, steel, hammer heads, automatic production lines for steel
balls & grinding rods, decorative wrought iron products and
paper-making machinery. Our products having been produced strictly
according to the ISO9001:2015 quality standard and are mainly used
in mines, cement plants, building materials, power stations,
chemical industry and steel mills, Well sold across China and
exported to the United States, Chile, the UK, Brazil, South Africa,
Australia, South Korea, India, Russia, Mexico, Malaysia, Laos,
Vietnam and other dozens of countries and regions, our products got
highly appreciated by our customers.
1.Diameter tolerance
| Diameter(mm) | Φ<30 | 30<Φ<60 | 60<Φ<80 | 80<Φ<100 | Φ>100 |
| Diameter tolerance(mm) | +1,-1 | +1.5,-1 | +2,-1 | +2.5,-1 | +3,-1 |
2.Chemical composition
| Name | Brand | Chemical composition(%) |
| C | Si | Mn | Cr | Mo | Cu | Ni | P | S | |
| Chrome alloy casting iron ball | ZQCr26 | 2.0-3.3 | 1.2max | 0.3-1.5 | >23.0-30.0 | 0-3.0 | 0-1.2 | 0-1.5 | ≤0.10 | ≤0.06 |
| ZQCr20 | 2.0-3.3 | 1.2max | 0.3-1.5 | >18.0-23.0 | 0-3.0 | 0-1.2 | 0-1.5 | ≤0.10 | ≤0.06 |
| ZQCr15 | 2.0-3.3 | 1.2max | 0.3-1.5 | >14.0-18.0 | 0-3.0 | 0-1.2 | 0-1.5 | ≤0.10 | ≤0.06 |
| ZQCr12 | 2.0-3.3 | 1.2max | 0.3-1.5 | >10.0-14.0 | 0-3.0 | 0-1.2 | 0-1.5 | ≤0.10 | ≤0.06 |
| ZQCr8 | 2.1-3.3 | 2.2max | 0.3-1.5 | 7.0-10.0 | 0-1.0 | 0-0.8 | － | ≤0.10 | ≤0.06 |
| ZQCr5 | 2.1-3.3 | 1.5max | 0.3-1.5 | 4.0-6.0 | 0-1.0 | 0-0.8 | － | ≤0.10 | ≤0.10 |
| ZQCr2 | 2.1-3.6 | 1.5max | 0.3-1.5 | 1.0-3.0 | 0-1.0 | 0-0.8 | － | ≤0.10 | ≤0.10 |
3.Technical specification
| Name | Brand | Diameter
(mm) | Hardness
(HRC) | Breakage rate | Impact value
(J/cm²) | Drop times
(times) | Micro structure |
Chrome alloy
casting iron ball | ZQCr26 | 17-150 | >58 | <1% | >7 | ≥12000 | M+C |
| ZQCr20 | 17-150 | >58 | <1% | >6 | ≥12000 | M+C |
| ZQCr15 | 17-150 | >58 | <1% | >5 | ≥12000 | M+C |
| ZQCr12 | 17-150 | >58 | <1% | >3.5 | ≥12000 | M+C |
| ZQCr8 | 17-150 | >58 | <1% | >3 | ≥12000 | M+C |
| ZQCr5 | 17-150 | >47 | <1% | >2 | ≥10000 | M+C |
| ZQCr2 | 17-150 | >45 | <1% | >1.5 | ≥8000 | P+C |
1.Diameter tolerance and Length tolerance
| Diameter(mm) | 8x10 | 10x12 | 12x14 | 14x16 | 16x18 | 18x20 | 20x25 |
| 25x30 | 30x35 | 35x40 | 40x45 | 45x50 | 50x55 | 55x60 |
| Diameter tolerance(mm) | +1,-1 |
| Length tolerance(mm) | +2,-2 |
2.Chemical composition
| Name | Brand | Chemical composition(%) |
| C | Si | Mn | Cr | Mo | Cu | Ni | P | S | |
| Chrome alloy casting steel cylpebs | ZQCr26 | 2.0-3.3 | 1.2max | 0.3-1.5 | >23.0-30.0 | 0-3.0 | 0-1.2 | 0-1.5 | ≤0.10 | ≤0.06 |
| ZQCr20 | 2.0-3.3 | 1.2max | 0.3-1.5 | >18.0-23.0 | 0-3.0 | 0-1.2 | 0-1.5 | ≤0.10 | ≤0.06 |
| ZQCr15 | 2.0-3.3 | 1.2max | 0.3-1.5 | >14.0-18.0 | 0-3.0 | 0-1.2 | 0-1.5 | ≤0.10 | ≤0.06 |
| ZQCr12 | 2.0-3.3 | 1.2max | 0.3-1.5 | >10.0-14.0 | 0-3.0 | 0-1.2 | 0-1.5 | ≤0.10 | ≤0.06 |
| ZQCr8 | 2.1-3.3 | 2.2max | 0.3-1.5 | 7.0-10.0 | 0-1.0 | 0-0.8 | － | ≤0.10 | ≤0.06 |
| ZQCr5 | 2.1-3.3 | 1.5max | 0.3-1.5 | 4.0-6.0 | 0-1.0 | 0-0.8 | － | ≤0.10 | ≤0.10 |
| ZQCr2 | 2.1-3.6 | 1.5max | 0.3-1.5 | 1.0-3.0 | 0-1.0 | 0-0.8 | － | ≤0.10 | ≤0.10 |
