Material and heat treatment process of liner directly determine the mechanical properties of liner and will have an important impact on the wear of liner.If the lining material is not properly selected and the heat treatment process is unreasonable, the fatigue strength and service life of the lining will be greatly reduced, which will not meet the requirements of grinding operation of vertical roller mill, and even cause some problems such as plastic deformation and drum.

Heat treatment of lining plate is an important way to reduce wear of lining plate of vertical roller mill. Therefore, proper heat treatment process should be selected according to the material of lining plate.However, in actual work, the relevant staff lacks the knowledge of lining material, so in heat treatment, the processing of lining is not enough, which not only does not play a strengthening role, but also makes the strength of lining lower. When hit by steel balls and materials, plastic deformation will occur.