| 摘要 |
PROBLEM TO BE SOLVED: To improve working efficiency and to reduce the unit requirement of a tool material by improving the wear resistance and resistance to heat crack of a tool material for hot working. SOLUTION: At least one or more element among Mg, Ca and Ce are added to a composition consisting of, by mass, 1.0-2.5% C, 0.3-2.0% Si, 0.1-2.0% Mn, 3.0-10.0% Cr, <=6.0% Mo, <=6.0% W, 4.0-15.0% V and the balance Fe with inevitable impurities, and further, a slight amount of B is added of necessary. By this method, carbide is finely pulverized, and the tool material for hot working, excellent in wear resistance and resistance to heat crack, can be manufactured.
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