细密机械零部件加工对材料有哪些具体要求？
What are the specific requirements for materials in the processing of fine mechanical parts?
1、对材料硬度的要卐求
1. Requirements for material hardness
在某些情况◥下，硬度越高材料越好，但是对于细密机械零部件加工来说，材料只能局限于车床车刀的硬度。如果材料比车床车刀还要硬，那就〓无法进行加工的。
In some cases, the higher the hardness, the better the material, but for the processing of fine mechanical parts, the material can only be limited to the hardness of lathe tool. If the material is harder than the lathe tool, it can not be processed.
2、材■料应软硬适中
2. The material should be soft and hard
细密机械零部件加工材料至少要比车床车刀的硬度低，同时，要了解细密机械零部件的用途是什么，从而选择合适的车床车刀进行加工。
At the same time, we should know what the purpose of the fine mechanical parts is, so as to select the appropriate lathe tool for processing.
3、应注意材料的密♀度
3. Attention should be paid to the density of the material
在进行细密机械零部件加工前一定要注№意材料的密度，如果╱密度过大，相当于硬度也很大。但硬度超过〓车床车刀的硬度，就无法进行加工的，不仅会损坏的车床车刀，还会造成车刀断▂飞等危险。
Pay attention to the density of the material before processing the fine mechanical parts. If the density is too high, the hardness is also very large. However, if the hardness exceeds the hardness of the lathe tool, it can not be processed. It will not only damage the lathe tool, but also cause the danger of tool breaking and flying.