压水堆核电厂一回路核岛主要设备蒸汽发生器管板一次侧表面为保证一定的耐蚀需大面积堆焊镍基合金,且要求较高的堆焊质量。管板堆焊是蒸汽发生器整个制造过程中首先要进行的部分,堆焊时间的长短直接影响着后面工序的进行。为了保证堆焊层质量,缩短堆焊时间,必须选择堆焊效率较高且堆焊质量稳定的工艺。 PWR nuclear power plant primary circuit nuclear island main equipment steam generator tube plate primary side surface in order to ensure a certain corrosion resistance requires a large area surfacing nickel-based alloys, and require a higher quality surfacing. Tube plate surfacing is the steam generator throughout the manufacturing process to be carried out in the first part of the length of the welding directly affect the back of the process. In order to ensure the quality of surfacing layer, shorten the surfacing time, we must choose a higher surfacing efficiency and quality of the surfacing process.