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Production manner, and high tenacious tool null of high tenacious
Production manner, and high tenacious tool null of high tenacious
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机译:生产方式和高韧性工具高韧性的无效
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摘要
PROBLEM TO BE SOLVED: To provide a method for efficiently manufacturing a tool with high toughness, which has crystal grains refined and prevents the destruction during use.;SOLUTION: This manufacturing method employs a steel material containing 0.40-0.85% C (mass%, hereafter), 2.0% or less Si (not including 0%), 2.0% or less Mn (not including 0%), 3.0% or less Cr (not including 0%), 0.1% or less Al (not including 0%), and 0.007 to 0.015% N, and subjects it to thermal refining treatment, wherein the thermal refining treatment comprises the steps of heating it to a temperature in an austenitic range, then cooling it to an Ar3 transformation temperature to (Ar3 transformation temperature + 50°C), and quenching it from the temperature range.;COPYRIGHT: (C)2004,JPO&NCIPI
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