Method for preventing intergranular stress corrosion and stress corrosion cracking of furnace shell of hot-blast stove

The invention relates to a method for preventing intergranular stress corrosion and stress corrosion cracking of a furnace shell of a hot blast stove, which can effectively solve the problem of cracking of the furnace shell, thoroughly isolate the direct permeation corrosion effect of an acid radical corrosion medium, and use high air temperature safely, efficiently, energy-saving, environment-friendly and low-cost. 2) scientific calculation of the furnace shell and design before manufacturing; (3) rolling, mounting and welding the furnace shell; (4) welding seam slag corrosion is cleaned, and welding seams are polished; (5) covering, inlaying or welding a welding seam; the method for preventing the intergranular stress corrosion and stress corrosion cracking of the hot blast stove shell is simple, novel, unique, easy to implement, simple and easy to implement and ultra-short in manufacturing and processing period, the problems of cracking and stress corrosion cracking of the furnace shell are thoroughly solv