Not all materials for precision parts processing can be precisely processed. Some materials are too hard, which exceeds the hardness of the processing machine, and may break the machine. Therefore, these materials are not suitable for precision machining, unless they are made of special materials or laser cutting.
Materials for precision parts processing are divided into two categories, metal materials and non-metallic materials.
For general metal materials, the hardness of stainless steel is the largest, followed by cast iron, followed by copper, and finally aluminum. The processing of ceramics and plastics belongs to the processing of non-metallic materials.
1. The first is the requirements for material hardness. For some occasions, the higher the hardness of the material, the better. It is only limited to the hardness requirements of the machined parts. The machined materials should not be too hard. If they are harder than the machined parts, they will be unable to be machined.
2. Secondly, the material is moderate in hardness and softness, at least one grade lower than the hardness of the parts. At the same time, it depends on the role of the processed components and the reasonable selection of materials for the parts.
Precision parts processing
In a word, there are some requirements for materials in precision machining. Not all materials are suitable for machining, such as too soft or too hard materials. The former is not necessary for machining, while the latter cannot.
Therefore, the most basic thing is to pay attention to the density of the material before processing. If the density is too large, it is equivalent to a large hardness. If the hardness exceeds the hardness of the machine parts (lathe tool), it is impossible to process. It will not only damage the parts, but also cause danger, such as the tool flying out and hurting people. Therefore, generally speaking, for mechanical processing, the material should be lower than the hardness of the machine tool, so that it can be processed.
