TEIGOKINKOSEIROOTANOSHURIHOHO

摘要

A method for repairing low alloy steel rotors of large machinery wherein the defective section of the original rotor is removed and a replacement end with mating areas machined on the replacement end and the original rotor is partially narrow gap arc welded to the rotor, the outer 1.27-5.1 cm of the weld being provided by gas tungsten arc welding. The mating attachment up to least the inside 6.3 mm of the weld is bored out to remove possible crack initiation sites and to provide a smooth bore through which the weld scan is easily inspected.