| 摘要 |
PROBLEM TO BE SOLVED: To provide a processing method for a steel with high Young's modulus and high fatigue strength, which can improve the service lifetime of a die by suppressing the reaction of C in the base structure of the steel with the materials of a forging die. SOLUTION: The processing method for the steel with the high Young's modulus and high fatigue strength includes hot forging which is executed with the forging die to an iron based alloy including 1.5-2.5 wt % of C and a hard carbide forming element such as W, V. A coating layer for inhibiting the reaction of C in the iron based alloy with the materials of the forging die, is coated and fixed at least on the engraved face of the forging die or formed on the surface layer part of the forging die. COPYRIGHT: (C)2004,JPO&NCIPI
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