In cutting processing, the tool wear that usually occurs includes the following three forms:

The first type of wear occurs due to cutting heat, such as bonding, diffusion, etc.; the second type is due to mechanical action, such as chipping or abrasive wear; the third type is cutting 

due to chemical factors. Breakage, thermal fatigue, thermal cracks, etc. caused by softening and melting of the blade.

1) Wear caused by cutting heat

When cutting materials with high hardness and high toughness, the temperature of the cutting edge is very high, and similar tool wear will occur when cutting difficult-to-machine materials. 

Especially when machining workpiece materials that generate short chips, crater wear occurs near the cutting edge, and tool breakage often occurs within a short period of time.

2) Causes of mechanical wear

When cutting difficult-to-machine materials, tool wear occurs in a short period of time, because there are many factors that promote tool wear in the processed material. Most 

difficult-to-machine materials are characterized by low thermal conductivity. As a result of this effect, the bond strength of the binder in the tool material will decrease at high temperatures, 

thereby accelerating tool wear.

3) Abrasion caused by chemical factors

Components in difficult-to-machine materials and certain components in tool materials react under high-temperature cutting conditions, and components are separated out, shed, or other 

compounds are formed, which will accelerate the formation of chipping and other tool wear phenomena.

We can know that the wear of CNC tools is caused by three factors, cutting heat, mechanical wear and chemical factors, so you will feel that the wear is fast during processing. It doesn’t 

matter if the CNC tools are worn out. Shanghai Hengcheng provides tool grinding services. After grinding Restores old cutting quality. When choosing CNC cutting tools, remember to also 

find Shanghai Hengcheng.