1, high manganese steel: the chemical composition of high manganese steel (ZGMn 13) contains 12% ~ 14% Mn, and its original surface hardness is HRC 20 ~ HRC 25. During the working process, due to the impact of the ball, the surface hardness of the liner can be improved to more than HRC40. In large mills, manganese steel liners are often deformed due to severe impact, resulting in damage to the mill barrel, so manganese steel liners are suitable for small and medium-sized mills.

2. High chromium alloy cast steel liner: It has high original hardness equivalent to wear-resistant white cast iron, certain toughness, high wear resistance under low impact, and high cost performance compared with other materials, and can be used on large, medium and small rolling mills.

material requirements

Firstly, the lining material of ball mill should be able to improve the grinding process of ball mill. Secondly, the lining material should be selected and handled well. It is required that the lining has high impact fatigue durability and can resist a certain strength of impact. In addition, the hardness, structure and composition of the liner are uniform. It has the advantages of low wear rate, no deformation and no fracture during use.

Lining material cost

In the manufacture and use of liner, the cost of liner material is an important factor to be considered, especially when grinding low-grade ore or low-grade ore or grinding low-priced materials such as cement. The total cost of the liner should include the material use and installation cost, and in most cases, it also includes the cost of replacing the liner and stopping the machine, which is measured in the form of production loss.

Material heat treatment process

No matter what kind of liner is used in the ball mill, in order to play a role and use in the machine, the material of the liner must be excellent. The lining material must have heat treatment process, otherwise the working lining is prone to cracks, and the lining material after heat treatment rarely appears. When selecting, the constructors should strengthen their knowledge and choose the most suitable material for the lining plate of the ball mill.