METAL PROCESSING METHOD AND METAL ARTICLE PROCESSED THEREBY

摘要

Provided are: a metal processing method using a tailored blank material as a raw material allows the further use of the features thereof, facilitates the setting of a boundary for a portion not to receive a predetermined heat treatment, and allows the simplification of the equipment and process management needed in metal processing; and a metal article processed thereby. A metal processing method comprises: a bonding step for preemptively bonding together a metal material having a relatively high elevated temperature by infrared heating and a metal material having a relatively low elevated temperature by infrared heating, to form an integrated metal material; and a heating step for simultaneously and comprehensively heating by infrared the integrated metal material, the infrared heating being concluded after a portion where the elevated temperature is relatively high in the integrated metal material undergoing infrared heating reaches a predetermined temperature corresponding to a predetermined heat treatment, but before a portion where the elevated temperature is relatively low reaches the predetermined temperature.