The selections of r epair welding technology are compared, and the r epair welding technology using handwork gas tungsten arc welding is detailed.The result shows good effect is got.

• 对补焊工艺方法的选择作了比较，具体阐明了采用手工钨极氩弧焊的补焊工艺方法，实践证明，效果良好。