Coating flaking and failure, which in turn resulted in high-speed steel coated tool performance deficiencies of instability

As a common high-speed steel cutting tool material, due to have a good process , strength, toughness and other advantages are still in use , especially in complex -shaped cutter blade manufacture and use has always dominant , but the high-speed steel cutting tools and carbide tools compared in terms of hardness , red hardness , wear resistance and so there are deficiencies, which restricts its use is more widespread in the late 1970s , the emergence of coated high speed steel cutting tools , only a fundamental change in the high-speed steel cutting tools , high speed steel to effectively solve the defects and deficiencies , but the coating thickness of the coated high  abrasive wheels  tools are limited , internal coating is easy to produce a large residual stress cracks , the coating flaking and failure,  cutting tools  resulting in high speed steel coated tool performance instability defects and shortcomings of higher prices in recent years, the application of nano-materials research has been involved in a number of areas , and have achieved more  grinding wheel  , which has become a priority research developed countries one of the hot authors utilize nanoscale diamond heat impregnation technique will speed steel cutting tools to strengthen the surface , the prepared tool has high strength, high hardness, high ductility , impact resistance , difficult corrosion, wear resistance, no penetration interface, ultra-fine grain material gradient tool , and this cutting tools do further research .