铁铸件的缺陷可以用各种焊补方法加以修补。有些车间已建立了熟练的技术领导,订有符合于铸件技术条件的操作规程。但是大多数车间内常常没有焊接技师,偶然采用不是经常有理论根据的焊补方法,结果发现在焊补的铸件上有局部白口、孔隙、蜂窝和裂缝等,因而引起人们对于用焊补法修补铸件缺陷的可靠性发生怀疑。 Iron casting defects can be repaired with a variety of welding methods. Some workshops have established a skilled technical leadership, there are operating procedures in line with the technical conditions of the casting. However, in most workshops, there is often no welding technician. Occasionally welding methods that are not always theoretically based have been used. As a result, local whiteouts, pores, honeycombs and cracks are found in the welded castings, Suspected casting defects reliability.