The Main function of the mill roller tyre is grinding. […]
The Main function of the mill roller tyre is grinding. So, the grinding lifetime is very important for a mill. A long grinding lifetime will save a lot of cost in maintenance and spare parts.
One of the most factor, which will affect the lifetime of the roller tyre, is the hardness. With 20%Cr-Mo/G-X260CrMoNi20 2 1, also known as Cr2021 Material, the hardness of the roller tyre can achieve min 58 HRC without cracking.
It is very critical in controlling the material composition of the roller tyre. If the material composition is not up to standard, there will be a lot of problem after heat treatment, such as cracking, low hardness, etc.