Analysis of out-of-round and eccentric wear of Grinding Media Balls (4)

1. The influence of working conditions. Through on-site observation of some mines, if the following phenomena occur: the ore feed has a large particle size, or is limonite, or has large magnetism, or high hardness (f=17-20), etc., out of roundness of the steel ball will also occur Phenomenon.

2. Unqualified raw materials. In fact, in the production process of forged-rolled steel balls, the most important hurdle is the source. The analysis of the raw materials after entering the factory, especially the analysis of the low-magnification structure after round steel slices, if there is a loose center and many inclusions, The map comparison is above level 3. In the finished steel ball produced, it will cause the phenomenon of out-of-round and partial wear in the mill;

In addition, there is also a phenomenon of mixed use of steel balls with high and low quality. For example, in the same mill, low-end products and mid-to-high-end products are mixed for use. Among them, there are 45# steel balls and B2 steel balls. It's strange to see the phenomenon of out-of-round and partial wear.

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