It is a fact that not all materials can be used to process in machining industry. Some materials are too high in hardness and exceed the hardness of the cutter and the machine may destroy the parts. So these materials are not suitable for precision machining unless they are made of special materials.
When it comes to precision machined materials, there are two main categories: metal materials and non-metal materials. For metal materials, the stainless steel has the largest hardness, followed by cast iron and copper, and finally aluminum.
The processing of ceramics and plastics belongs to the processing of non-metallic materials.
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First of all, for some occasions, harder is better, but should not exceed the hardness of the machine cutter.
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Secondly, we should choose right materials, at least it should lower than the hardness of the cutter.
In short, there are still some requirements for material quality in precision machining. Not all materials are suitable for machining. For example, too soft or too hard materials are not possible to process. Therefore, before machining, we must pay attention to the density of material. If the density is too high, means the hardness is very high. If the hardness is beyond the hardness of the machine tool, it will not be able to process. It will not only damage parts, but also cause hazards, such as turning the knife away and hurting people.
