In the precision mechanical parts processing before, must pay attention to the density of the material, if the density is too large, equivalent to the hardness is also very large, and the hardness if more than the hardness of the lathe turning tool, it is impossible to process, not only will damage the parts, but also cause danger, such as turning tool flying out of the crash injury. So, what are the requirements of precision mechanical parts processing material?
For precision machining materials are divided into two categories, metal materials and non-metallic materials. For metal materials, the hardness of stainless steel is the largest, followed by cast iron, followed by copper, and finally aluminum. The processing of ceramics, plastics, etc. is the processing of non-metallic materials.
Stainless steel materials used in the processing of precision mechanical parts
1. First of all, the requirements of the material hardness, for some occasions, the higher the hardness of the material is the better, just limited to the hardness requirements of the processed machine parts, the processed material can not be too hard, if it is harder than the machine parts can not be processed.
2. Secondly, the material soft and hard moderate, at least one grade lower than the hardness of the machine, but also depends on the role of the processed device is to do what with the machine parts reasonable selection of materials.
In short, precision machining of the material requirements or some, not what material is suitable for processing, such as too soft or too hard material, the former is not necessary for processing, and the latter is not processed.
Therefore, in general, for mechanical processing, the material material should be lower than the hardness of the machine tool, so that it can be processed. Not what materials can be precision machining, some materials are too hard, more than the hardness of the processing machine parts, it is possible to crash the machine parts, so these materials are not suitable for precision machining, unless the machine parts made of special materials, or laser cutting.