What are the requirements for materials in the processing of mechanical parts

Mechanical parts processing, and not what materials can be precision processing, mechanical parts processing of the material requirements are very strict. So do you know what materials are generally used for machining mechanical parts?     

For precision machined materials are divided into two categories, metallic materials and non-metallic materials.

For metallic materials, stainless steel is the hardest, followed by cast iron, copper, and aluminum. And the processing of ceramics, plastics and so on belongs to the processing of non-metallic materials.

1. the first is the requirements of the hardness of the material, for some occasions, the higher the hardness of the material, the better, but limited to the hardness requirements of the machining parts, the processing of the material can not be too hard, if it is harder than the parts can not be processed.
2. Secondly, the material is moderate in hardness and softness, at least one level lower than the hardness of the machine parts. At the same time, it also depends on what the role of the processing devices is to do, and the reasonable selection of materials for the machine parts.
3. In short, precision machining of the material requirements or some, and not what material is suitable for processing, such as too soft or too hard material, the former is not necessary to process, and the latter is unable to process.

Therefore, the most basic one is that we must pay attention to the density of the material before processing. If the density is too large, the hardness is also very large, and if the hardness exceeds the hardness of the machine parts (lathe lathe tool), it can not be processed. It will not only damage the parts, but also cause danger, such as turning tool flying out wounding and so on. Therefore, in general, for mechanical processing, the material material should be lower than the hardness of the machine knife, so as to be processed.