Precision parts processing is not all materials can be precision processing, part of the material hardness is too large, more than the hardness of the processing U machine parts, it may break the machine parts, so these materials are not suitable for precision machining, unless it is made of special materials, or laser cutting.
For precision parts processing materials are divided into two categories, metal materials, non-metallic materials.
Generally speaking, the hardness of stainless steel is relatively large, followed by cast iron, followed by copper, and finally aluminum. And the processing of ceramics, plastics and so on 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 is the better, but limited to the hardness requirements of the machining machine parts, the processing of the material can not be too hard, if the machine is also hard than can cause processing.
2, secondly, material soft and hard moderate, at least one grade lower than the hardness of the machine, but also to see what the processing of the device for O is used to do, reasonable material selection of the machine.
In short, there are still some requirements for precision machining materials, and not what materials are suitable for processing, such as too soft or too hard materials, 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 (lathe turning tool), it can not be processed. It will not only damage the parts, but also cause danger, such as the turning tool flying out to hurt others. Therefore, in general, for mechanical processing, the material material is lower than the hardness of the machine tool, so as to be processed.