According to the weight loss data of cast liner wear in the table, the relative wear coefficient of high chromium cast iron carbon steel bimetallic cast liner is three times that of the original alloy steel cast liner under full load in the wet ball mill.
| Material type | No. | Original weight(kg) | Current weight(kg) | Weightlessness(kg) | Wear resistance coefficient |
| Bimetallic | 1 | 185 | 148 | 37 | 3 |
| Bimetallic | 2 | 185 | 153 | 32 | 3 |
| Alloy steel | 1 | 195 | 92 | 103 | 1 |
| Alloy steel | 2 | 195 | 91 | 104 | 1 |
The difference in wear resistance can be explained as follows: the original alloy steel casting lining plate obtained a material structure with a single high hardness martensite as the matrix after quenching, while the high chromium cast iron obtained after air cooling quenching heat treatment showed that the matrix structure was high hardness martensite, which was uniformly distributed with ultra-high hardness eutectic carbide M7C3. Therefore, the latter is more suitable for extreme wear-resistant service environment in terms of material structure, and its service life is also greatly improved compared with the former. After that, the microstructure of the worn samples of the two materials is compared to further clarify the corrosion and wear mechanism of the bimetallic composites in the service process of the ball mill.