Tungsten carbide insert coating are summarized as follows:
1. the surface of golden TiN can reduce friction and provide wear identification effect.
2. the special structure of Al2O3 deposition layer has the best thermal barrier performance, to ensure the high speed dry cutting, blade matrix plastic deformation resistance.
3. TiCN layer has the performance of abrasive wear resistance, so that the blade rear surface wear resistance is the strongest.
4. Using gradient sintering technology, the impact resistance and wear resistance of the cutting edge are enhanced, so as to improve the anti-damage ability of the cutting edge.
5. containing special crystal structure of carbide, improve the carbide head matrix red hardness, strengthen the blade high temperature resistance performance.