焊补为了修补铸件的缺陷，一般采用相同或相似的材料，特殊情况下采用性能更好的材料或特殊要求的材料。
用于强度要求不高的灰口铸铁件的焊补。
Frepair welding of grey cast iron which requires less strength.
在修割边和钻孔之间的裂纹用气弧消除，然后进行焊补。
The crack between the coped and hole was removed by air arc and then repaired by welding.
本文就裂纹产生的原因和如何正确安排焊补工艺进行讨论。
The causes of resulting in the cracks are discussed and the proper techniques of repair welding the cracks are presented in this paper.
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