T/P92 steel pipe rapid repairing method capable of guaranteeing high-temperature strength

The invention relates to the field of metal welding, and discloses a T/P92 steel pipe rapid repairing method capable of ensuring high-temperature strength, which comprises the following steps: (a) calculating the thickness of a reinforcing pipe according to the geometric dimension and the use condition of an old pipe; (b) selecting the size of the reinforcing pipe according to the geometrical characteristics of the old pipe, the actual engineering requirements and the existing spare part conditions; (c) the old pipe is sleeved with a reinforcing pipe, and cracks of the old pipe are welded and repaired through a nickel-based welding material; and (d) the old pipe welding seam is covered with the middle of the reinforcing pipe, and then the reinforcing pipe is welded to the old pipe through a nickel-based welding material. The nickel-based welding material is adopted for welding and repairing the TP92 steel pipe, subsequent heat treatment is not needed, the repairing time is greatly shortened, and the shutdown