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.
With the development of technology, new material liners have also been applied in vertical roller mills. For example, the composite liner composed of rubber and carbide steel has ideally solved the contradiction between toughness and rigidity of the liner and reduced the impact of the liner during operation.