METHOD FOR PARTIALLY REPAIRING STEEL SHELL OF BLAST FURNACE BODY

摘要

PROBLEM TO BE SOLVED: To provide a method of partially repairing a steel shell of blast furnace body by an efficient welding, that can lower residual stress at the welded part and can prevent a delayed fracture by a simple work, even though the weld joint is highly restrained in partial repairing for the steel shell of the blast furnace.;SOLUTION: In this method, a part to be repaired in a steel shell 1 of the blast furnace is removed, and the part is repaired by welding a new steel shell 3, in the rest period of the blast furnace. For the repair, a ferritic stainless steel is used as a welding material when welding.;COPYRIGHT: (C)2003,JPO