What is the raw material of the cutting tool?
Basic properties that cutting must posses are: Tool material must be at least 30 to 50% harder than the work piece material. Tool material must have high hot hardness temperature. High toughness High wear resistance High thermal conductivity Lower coefficient of friction Easiness in fabrication and cheap Different elements used in cutting tool materials and their properties are Element Properties Tungsten Increases hot hardness Hard carbides formed Abrasion resistance Molybdenum Increases hot hardness Hard carbides formed Improving resistance Chromium Depth hardenability during heat treat hard carbides are formed improving abrasion resistance some corrosion resistance Vanadium combines with carbon for wear resistance retards grain growth for better toughness Cobalt Increases hot hardness, toughness Carbon Hardening element forms carbides Different cutting tool materials used for cutting operations in practice are high carbon steel, high speed steel, non -f...