precision machining?
precision machining, not all materials can be precision machining, some materials hardness is too large, more than the hardness of the processing parts, may break the parts, so these materials are not suitable for precision machining, unless it is made of special materials, or laser cutting. For precision machining materials, there are two categories, metal materials and non-metal materials. For metal materials, the hardness is high for stainless steel, followed by cast iron, followed by copper, and followed by aluminum. The processing of ceramics and plastics belongs to the processing of non-metallic materials.
1. First of all, it is the requirement of material hardness. For some occasions, the higher the hardness of the material, the better. It is only limited to the hardness requirement of the processed parts. The processed materials cannot be too hard. If they are harder than the parts, they cannot be processed.
2. Secondly, the material is moderately soft and hard, at least one grade lower than the hardness of the parts. At the same time, it also depends on the function of the processed devices 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 basic one is that we must pay attention to the density of the material before processing. If the density is too high, it is equivalent to a large hardness. If the hardness exceeds the hardness of the machine part (lathe turning tool), it cannot be processed. It will not only damage the parts, but also cause danger, such as the turning tool falling out and hurting people. Therefore, generally speaking, for mechanical processing, the material should be lower than the hardness of the machine knife, so that it can be processed.
