HEAT TREATMENT METHOD OF WORKIMG APPARATUS OF HEAVY EQUIPMENT

摘要

A method for treating the heat of the work equipment for the heavy equipment is provided to reduce the residual stress at the welding part by supplying the heat of the high temperature to a welding product inside. A method of heat-treating for the heavy equipment performs the following steps: a step for making the structure of the work equipment by welding inside is shut tightly; a step for punching the dosing hole for the hot gas injection in the fixed position of the work equipment(S200); a step for injecting hot gas for the tempering heat treatment through the hole inside the work equipment and sealing the hole(S300); and a step for removing the residual stress maintaining and is generated in the welding part of the work equipment the thermal anneal environment by the hot gas injected inside the work equipment(S400).