The defects or damage of iron casting either in manufacturing or during usage should be repaired,which should be done according to its character and corresponding welding process.

• 铸铁零部件在制造和使用过程中产生的缺陷和损坏,需要修补时,应根据铸铁的特点采用相应的焊补工艺进行焊补修复。