The tool material , for faster machining , should have wear resistance , red hardness and thoughness

 The tool material , for faster machining , should have wear resistance , red hardness and thoughness.The principal material used in cutting tool are as follows ;
1) High speed steel :- The  high speed steel containing 18% tungsten, 4% chromium and1% vanadium is considered to be one pf the best all-purpose tool steel, They retain their hardness upto a temperature of 900 degree centigrate .
2)High carbon steel :- The tool made up of high carbon steel have low heat and wear resistance . Since these tools lose hardness at about 300 degree centigrate , therefore they are not suitable for hight cutting speed and heavy -duty work. Such tools may be used  on soft material such as wood.
3)Carbide :- A carbide suitable for steel machining consists of  82% tungsten carbide, 10% titanium carbide and 8% cobalt .The carbide tools operating at very low cutting speeds (below 30 m/min) reduces tool life.
4)Ceramic:- The ceramic tools are fixed to a tool  body by brazing . These tool have greater tool life than carbide tools.

The tool material , for faster machining , should have wear resistance , red hardness and thoughness The tool material , for faster machining , should have wear resistance , red hardness and thoughness Reviewed by HARSHAL DHAWAS on December 17, 2017 Rating: 5
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