The tool material hardness requirements are usually higher, the minimum requirement is higher than the workpiece hardness of the workpiece material. Slitter blades for the same reason. However, not only the hardness, the tool must have a great performance in the market to "kill" a way out to win the favor of consumers. High performance requirements on tools include wear resistance, heat resistance, thermal conductivity, toughness and more. The following is a specific explanation.
High wear resistance and heat resistance. Abrasion resistance of the tool material refers to the ability of resistance to wear. In general, the higher the hardness of the tool material, the better the abrasion resistance. The heat resistance is usually measured by the material with higher hardness maintained at a high temperature, ie, hot The harder, the better the heat resistance, the stronger the tool material is resistant to deformation and abrasion during the cutting process.
Good thermal conductivity. The thermal conductivity of the tool material is expressed in terms of thermal conductivity, the thermal conductivity of large thermal conductivity, heat generated during cutting easy to conduct, thereby reducing the cutting part of the tool temperature, reduce tool wear and improve tool material thermal shock and heat Cracking ability. .
Sufficient strength and toughness. Cutting tool cutting material to withstand the cutting and cutting force and impact, so the tool material must have sufficient strength and toughness.
Good craftsmanship. Tool materials have better machinability, including forging, welding, cutting, heat treatment, grindability, etc., in order to facilitate the manufacture of circular knives.
Economic. Cheap, easy to promote use, get good benefits.
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