RESTORATION HEAT-TREATMENT METHOD FOR CREEP-DAMAGED HEAT-RESISTANT METAL MEMBER

摘要

A heat-resistant metal member suffering from creep damage is covered by a heat-resistant covering member and secured so as to contact an outer periphery of the heat-resistant metal member, and the heat-resistant metal member covered by the heat-resistant covering member is heated to a temperature of 1000°C or greater. A compressive force accordingly acts on the heat-resistant metal member undergoing thermal expansion toward the outer periphery, enabling efficient regenerative heat treatment to be performed on the heat-resistant metal member suffering from creep damage, while restraining thermal expansion in the direction toward the outer periphery of the heat-resistant metal member.