Cement miller is the key equipment for grinding after the crushing process, and it is widely used in the manufacture industries, such as cement, silicate, new building material, refractory material, Fengde, ferrous metal, nonferrous metal and glass ceramics, it also can be used for the dry and wet grinding for all kinds of ores and other grind-able materials.
Cement miller main wear mechanism:
1. The cement mill deformation wear. Grinding balls and material relative sliding and mutual impact, in addition to withstand cutting and chisel cutting wear, and furrow deformation and chisel cutting deformation with occurs, the metal is pushing oppression to groove and the edges of the pits of lateral, in repeated action and metal deformation repeatedly, because of strain fatigue crack, crack extension, connection, form the plough cut sheet from grinding ball table and fall off.
2. Fatigue wear. In mill grinding body in motion rise phase by repeated sliding and rolling, in drop stage by repeated impact, in the unceasing impact stress, contact stress and shear stress, under the action of the grinding ball in the surface of fatigue crack, crack parallel surface extension, and to the surface extension form flake layer. As in the surface of casting defect at nuclear, expansion will lead to the macro fatigue spalling.
3. The cement grinding machine cutting and chisel cutting wear. Grinding ball in the mill in sports rise phase and material relative sliding, the material component of hard cutting out deep groove, the soft material with the ball cutting relatively shallow, to a certain Angle contact material, material for grinding balls produced local chisel cutting wear, form the chisel cutting pit.
4. Brittle flaking. Grinding balls under impact process, the brittle phase cracking and crushing, since surface spalling, causing wear.
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