Hot rolling grinding balls for cement mills are high-performance grinding media specifically designed for grinding systems in the cement industry, primarily used for the ball milling of materials such as cement clinker, slag, limestone, and pulverized coal. Manufactured from high-quality alloy steel using advanced hot-rolling and in-line heat treatment technologies—alongside rigorous quality control—these balls feature high strength, superior wear resistance, high toughness, and a low breakage rate. They are engineered to meet the demands of modern cement production lines for long-term, continuous, and highly efficient operation.
Unlike traditional cast grinding balls, hot-rolled balls are produced through the continuous rolling of heated steel bars, resulting in a denser and more uniform internal microstructure that minimizes defects such as porosity and shrinkage cavities often associated with casting. Furthermore, advanced quenching and tempering processes create a high-hardness, wear-resistant surface layer while maintaining excellent internal toughness; this effectively prevents cracking and breakage during use, thereby enhancing grinding efficiency and reducing unit production costs.
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Mechanical Properties And Microstructure
| Hardness (HRC) | Impact Value | Microstructure | Number of Falling Ball Tests | |
| Quenched | Unquenched | |||
| ≥58 | ≥40 | ≥12 | M | ≥20000 |
Product Specification And Weight
| Nominal Diameter mm (ins) | Theoretical Diameter mm (ins) | Weight of Each Ball (g) | Pcs/ton | Allowable Diameter Deviation (mm) |
| 20(3/4) | 20.8 | 37 | 27000 | 1.5 |
| 25 | 26 | 72 | 13900 | 1.5 |
| -2 | ||||
| 30 | 31.2 | 125 | 8000 | 1.5 |
| -2 | ||||
| 40 | 41.6 | 296 | 3380 | 1.5 |
| -2 | ||||
| 50 | 52 | 578 | 1730 | 1.5 |
| -2.5 | ||||
| 60 | 62.4 | 999 | 1000 | 1.5 |
| -2.5 | ||||
| 70 | 72.8 | 1586 | 630 | 1.5 |
| -2.5 | ||||
| 75 | 78 | 1951 | 512 | 1.5 |
| -3.5 | ||||
| 80 | 83.2 | 2367 | 420 | 1.5 |
| -3.5 | ||||
| 90 | 93.6 | 3371 | 300 | 1.5 |
| -3.5 | ||||
| 100 | 98.8 | 3964 | 250 | 1.5 |
| -3.5 | ||||
| 110 | 114.4 | 6154 | 162 | 1.5 |
| -3.5 | ||||
| 120 | 124.8 | 6800 | 125 | 1.5 |
| -5.5 | ||||
| 130 | 135.2 | 10158 | 98 | 1.5 |
| -5.5 |
Anhui Ningguo Wanfu New Material Science and Technology Development Co., Ltd. is located at the foot of the Huangshan Mountain -- the capital of wear-resistant materials in China, the provincial high-tech economic and technological development zone, and is a professional manufacturer of wear-resistant materials series products.
Wear-resistant material technology combined with grinding technology as the guide, sets scientific research, design, development, manufacturing, and technical services as one. With a resin sand extrusion model automatic production line, resin sand automatic production line, iron film coated sand casting production line, with no box shape casting production lines, automatic oil quenching heat treatment production line, desktop car and well type heat treatment furnace, shot blasting machine and direct reading spectrometer, chemical analysis instruments, metallurgical microscope, durometer, impact tester, etc. A full set of production and physical and chemical testing equipment...
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qi18156307775@163.com
+86-18156307775
+86-563-4187518
No.1 Chuangxin South Road, Economic and Technological Development Zone, Ningguo City, Anhui Province, China
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