| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a temper bead welding repairing method which enables tempering even to a region hard to obtain a tempering effect without using a padding material. <P>SOLUTION: The temper bead welding repairing method includes a tubular component cutting and removing process, a through-hole plug inserting process, a cladding-by-welding process, a hole working process and a newly-installed nozzle stub bonding process. The cladding-by-welding process includes: an initial layer forming step wherein a welding torch is turned around a first center to scan to form an initial layer by overlaying a circular bead of different diameter on the outer surface; and an remaining layer forming step wherein a welding torch is turned around a second center to scan to form the remaining layer by overlaying a circular bead of different diameter on the initial. In the other layer forming step, an aiming position of welding of the outermost peripheral bead of the another layer is so set as to be along the inner peripheral shape of the outermost bead of an layer being a base material. <P>COPYRIGHT: (C)2013,JPO&INPIT |
