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How to Choose Materials for Precision CNC Machining Parts?

67   |   Published by VMT at May 29 2021



Not all materials can be precision machined. Some materials are very hard and have exceeded the hardness range of precision machining. Therefore, these materials are not suitable for precision CNC machining. In the field of customized precision CNC machining, what issues should be paid attention to when choosing materials?




How to choose materials for precision CNC machining parts




The materials used in cnc precision machining parts are mainly divided into two categories: metallic materials and non-metallic materials. For metal materials, stainless steel and carbon steel with higher hardness are represented, followed by cast iron and copper, and aluminum is the last; the processing of ceramics and plastics belongs to non-metal processing materials;



1. Requirements for material hardness. In some special cases, the higher the hardness of the material, the better. It is limited to the hardness requirements of CNC machined parts. The processed material should not be too hard. If it is harder than the machined parts and tools, it cannot be processed;



2. The hardness of the material is different, at least one level lower than the CNC machining of mechanical parts and tools, depending on the function of the equipment and the processing technology of the parts;


Customized precision parts machining has certain requirements for product materials. Not all materials are suitable for CNC machining. For example, materials with low hardness do not need to be processed, and equipment with high hardness cannot be processed.




Therefore, in the field of mechanical processing, it is necessary to understand the density of the material before machining parts. If the density is too large, the corresponding hardness will be greater. If the hardness exceeds the hardness of the machine tool, there is no way to process it. In this case, machining will not only damage the parts, but also cause other hazards, such as tool collapse and damage to the machine tool. Therefore, in the field of mechanical processing, the machining material is lower than the hardness of the tool, and suitable materials for precision machining parts should be selected.





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