Precision parts machining Not all materials can be precision machined. Some materials have too much hardness and exceed the hardness of the machined parts, which may break the parts. Therefore, these materials are not suitable for precision machining unless they are special Parts made of material, or laser cutting.
The materials for precision parts processing are divided into two categories, metal materials and non-metal materials.
Generally speaking, the hardness of stainless steel is relatively high, followed by cast iron, followed by copper, and finally aluminum. The processing of ceramics, plastics, etc. belongs to the processing of non-metallic materials.
1. The first is the requirement for the hardness of the material. For some occasions, the higher the hardness of the material, the better, but it is limited to the hardness requirements of the machined parts. The material to be processed cannot be too hard. of.
2. Secondly, the material is moderately soft and hard, at least one grade lower than the hardness of the machine parts. At the same time, it also depends on the function of the machined parts, and the reasonable selection of materials for the parts.
In short, precision machining still has some requirements for materials, not all materials are suitable for processing, such as materials that are too soft or too hard, the former is not necessary for processing, while the latter cannot be processed.
Therefore, the most basic one is that you must 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 (lathe turning tool), it cannot be processed. Not only It will only damage the parts, but also cause danger, such as the turning tool flying out and hurting people. Therefore, in general, for mechanical processing, the material quality should be lower than the hardness of the machine tool, so that it can be processed.