发布时间：2021-04-01 17:45:20 来源：http://www.jnskdj.com 作者：骏豪 浏览量：
Some of the factors that affect the quality of NC tool grain recycling, the Xiaobian of Junhao CNC company introduces some of the factors that affect the quality of tool grain recycling: when the hardness of NC tool grain recycling material is high, the wear resistance is also high. However, the higher the hardness of the blade material, the lower the bending strength and impact toughness. The following is a brief introduction to the two kinds of materials for making blades. High speed steel is still one of the widely used blade materials because of its high bending strength, impact toughness and good machinability.
The coated blade has the characteristics of high surface hardness, good wear resistance, stable chemical properties, heat and oxidation resistance, small friction coefficient and low thermal conductivity. Compared with the uncoated blade, the service life of the coated blade can be increased by more than 3 ~ 5 times, the cutting speed can be increased by 20% ~ 70%, the machining accuracy can be improved by 0.5 ~ 1 level, and the tool consumption cost can be reduced by 20% ~ 50%.
Therefore, the coated tool grain has become the symbol of modern cutting blade, and the use proportion in the blade has exceeded 50%. At present, the coating process can be used to improve the performance of various cutting tools used in machining, including turning tools, boring tools, drills, reamers, broaches, taps, thread combs, rolling heads, end mills, forming tools, gear hobs and gear shapers.
There are four kinds of coated blades: coated high speed steel blades, coated cemented carbide blades, and coated blades on ceramic and superhard materials (diamond or cubic boron nitride).
However, the former two kinds of coated blades are used more frequently. It is considered that the coating on the ceramic and superhard alloy blade is a material with lower hardness than the substrate. The purpose is to improve the fracture toughness of the blade surface (which can be increased by more than 10%), reduce the chipping and damage of the blade, and expand the application range of the blade.