During the use of the ball mill, some customers often ask, the same lining plate installed in a ball mill, some of the wear and tear is quite severe, must be replaced at intervals, while the other degree of wear is not so serious, replace The cycle is relatively long. For how this problem arises, the following technical personnel of Zhengzhou Yusheng Casting Company gave clear answers based on years of experience.
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First of all, in the production process of the ball mill, the lining plate is subjected to impact, chiseling, squeezing and micro-cutting of the ball and the material. The wear characteristics are pits, cracks and furrows on the surface. Secondly, the degree of wear of the liner is related to the characteristics of the material, particle size, sharpness and wearability. It is also related to the size of the mill diameter and the location of the liner. The following describes in detail the factors affecting the liner:
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The liner of the mill is subject to the impact, grinding, extrusion and micro-cutting of the grinding ball and the material. The wear characteristics are pits, cracks and furrows on the surface. The degree of wear is related to material properties, particle size, sharpness, and wearability. It is also related to the size of the mill diameter and the location of the liner. The feed end grinding head liner wears much more severely than the feed end grinding plate due to the large grinding body and material particle size, sharp edge side impact, and sliding cutting. The partition board is subject to the side impact of the first and second positions of the ball, and the material is also subject to erosion micro-cutting through the screen seam, so the wear is also serious. If the tunnel board is required to have both impact-resistant wear resistance without fracture, high yield strength and hardness, resistance to bending, resistance to material erosion, maintenance of quilting width, and meeting process requirements, toughness and high hardness should be selected. material. Even if it is the same mill lining, the wear is different in different parts. For example, the end lining plate and the middle lining plate are seriously affected by the material and the grinding ball, especially the front face, and the tail of the ## $ is lighter. some. Cylindrical steps, ribs, battens and other liners are subject to severe cutting and impact. Therefore, in the production process of linings, the wear resistance of impact wear of different parts should be considered, or the structural design should be improved. Grinding head end lining board is affixed with ribs, a lining board is made into two steps, and the wear part of the compartment board is thickened and so on.
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