核一级设备稳压器电加热元件的焊接

Welding of electric heating element used for pressurizer

核一级设备稳压器电加热元件套管与连接件的焊缝焊接质量要求较高,从焊接设备选择、保护气体选用、钨极选择、焊缝坡口制备、组焊工艺、接头性能试验等方面介绍了其焊接工艺及评定,采用该工艺获得了稳定的焊接质量,焊缝外观检测、渗透检测、射线检测全部一次合格。

The welds between the voltage regulator electric heating element sheath and connecting piece in pressurizer are require with a high welding quality.This paper introduces the welding procedure and its qualification from the aspects of selection of welding equipment, shielded-gas and tungsten, weld groove preparation, assembled welding technology and joint performance test.By this technology, it obtains a stable welding quality and the weld appearance test, penetration test and ray test, all pass at first time.