Cause Analysis And Solutions For Common Problems Of Wear-resistant Steel Balls

Wear-resistant steel balls for ball mills refer to steel balls used in ball mills. They require good wear resistance. In fact, this is a relative concept. Generally, steel balls with a hardness of 58 or higher are better. However, the wear resistance of wear-resistant steel balls does not only depend on the hardness. In our steel ball industry, the standard for wear-resistant steel balls is generally regarded as high-quality steel balls with "high hardness without damage". In fact, in actual use, hardness is very important, but it is important to have the same composition and product.

Wear-resistant steel ball

  The quality of the steel ball determines the efficiency of the work process. If the quality of the wear-resistant steel ball does not meet the standard, the wear-resistant steel ball will be easily damaged during the work process. What are the common problems of the wear-resistant steel ball during operation?

Wear-resistant steel ball

  1. High wear: The main reason is that some manufacturers do not have quenching equipment, and the wear resistance of unquenched steel balls is very low or very inferior, resulting in low product hardness and large wear;

  2. Fragmentation: The main reason is that the composition of the steel ball does not meet the standard, the heat treatment method is incorrect, the appearance is poor or the use of inferior raw materials causes too many inclusions in the steel ball, which leads to cracking;

  3. Spalling: The reason is similar to chipping, mainly because the composition of the steel ball does not meet the standard, the appearance is not good or the use of inferior raw materials causes too many inclusions in the steel ball, which leads to spalling;

  4. Poor appearance: The appearance of the steel ball has serious appearance defects, such as slag inclusion, sand inclusion, high fluff, and wrinkled skin. These defects are the stress concentration points of the steel ball, which will cause the stress change of the steel ball due to the use of the ball mill. Broken or peeled, etc.

  The reason analysis of the above common problems of wear-resistant steel balls is for reference only, but should also be combined with the specific working conditions and process requirements of the mine. For example, the ball mill is mainly used to further grind the ore to a certain fineness to meet the selection requirements. Usually, the steel ball is being ground and the drop height in the machine is not large. At this time, the hardness of the steel ball can be mainly considered, and the high wear resistance can be mainly considered. It can be considered that the toughness meets the requirements of use. Large-scale semi-automatic grinders should be considered first. The toughness of the steel ball ensures that the steel ball will not break during use.