Dense processing, not all materials can be precision machined, some materials are too hard, beyond the hardness of the machine parts, it may collapse the machine, so these materials are not suitable for precision machining, unless it is special Mechanical parts made of materials, or laser cut. So what are the requirements for the processing of precision parts? Let's take a look at it.
For precision machining materials are divided into two categories, metal materials and non-metal materials.
For metal materials, the hardness is the largest for stainless steel, followed by cast iron, followed by copper, and finally aluminum.
The processing of ceramics, plastics, etc. is a processing of non-metallic materials.
1, the first is the material hardness requirements, for some occasions, the material is the higher the hardness the better, only limited to the hardness requirements of the processing parts, the processed material can not be too hard, if it is harder than the mechanical parts can not be processed.
2, secondly, the material is moderately soft and hard, at least one grade lower than the hardness of the machine. At the same time, it depends on what the function of the processed device is, and the material is reasonably selected.
In short, precision machining has some requirements on materials. Not all materials are suitable for processing. For example, materials that are too soft or too hard, the former is not necessary for processing, while the latter cannot be processed.
Therefore, we must pay attention to the density of the material before processing. If the density is too large, it is equivalent to the hardness. If the hardness exceeds the hardness of the machine (the lathe turning tool), it cannot be processed, not only will the parts be damaged, but also It can cause dangers, such as a car knife crashing out and hurting people. Therefore, in general, for mechanical processing, the material of the material is lower than the hardness of the machine tool so that it can be processed.