How to select materials for precision machining parts?

We all know that the smaller parts, the higher requirements for machining accuracy, and this kind of processing for high-precision parts is also called precision machining. Because of its very high precision requirements, this has an impact on the performance and the precision requirements are correspondingly very high, and materials with too high strength and hardness cannot be used. Such materials will increase the difficulty of processing. If the hardness of the processing machine is exceeded, the machine may even be damaged. So what are the material requirements for precision machining parts?

There are many kinds of materials in common processing, but we can classify them into metals and non-metals. Generally, the hardness of metals is stainless steel, followed by iron, then copper, and finally aluminum. Among non-metallic materials, ceramics and plastics are particularly representative.

  1. First of all, as far as the hardness of the material is concerned, in some applications, the higher hardness, the better. However, because the hardness of the processing machine has a certain limit, the material to be processed must not be too hard, at least it can not be higher than the hardness of the machine. If it is higher than the hardness of the machine, then it must not be processed.
  2. Secondly, not only the hardness of the material should be moderate, but also at least one grade lower than the hardness of the machine part, and the function of the processing device should be analyzed, and then the machine part should be reasonably selected. Only in this way can it be ensured that the products produced are most in line with the requirements and at the same time the most economical.

All in all, the selection of materials when processing precision parts must also have certain requirements. Not all materials are suitable for processing, and materials that are too soft or too hard are not feasible. Therefore, in general, the material must be carefully determined before processing, and pay attention to the hardness of the material. Ultra-high hardness materials will not only damage the parts, but may also cause incidents such as flying and hurting the turning tool.