CUTTING TOOL MATERIAL
Cutting tool is a device used to remove unwanted material from the given workpiece.
Characteristics of a cutting tool material
1. The material should be harder than the workpiece so that it is able to penetrate into the workpiece and it should have hot hardness i.e. the ability of material to retain hardness at elevated temperatures.
2. The coefficient of friction at the tool chip interface should be low for better surface finish and less wear.
3. The material should have wear resistance to prevent wear and tear of the cutting tool surface.
4. It should be chemically stable so that it does not react with the workpiece and chemically inert so that there is no oxidation and hence no scales and pits are formed on the surface.
5. The material must have sufficient strength and toughness to withstand shocks and vibrations.
6. The thermal conductivity should be high so that there is heat dissipation which is generated during the machining process thereby increasing the life of the cutting tool.
2. The coefficient of friction at the tool chip interface should be low for better surface finish and less wear.
3. The material should have wear resistance to prevent wear and tear of the cutting tool surface.
4. It should be chemically stable so that it does not react with the workpiece and chemically inert so that there is no oxidation and hence no scales and pits are formed on the surface.
5. The material must have sufficient strength and toughness to withstand shocks and vibrations.
6. The thermal conductivity should be high so that there is heat dissipation which is generated during the machining process thereby increasing the life of the cutting tool.
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