大型铝铸件的缺陷可以用手工电弧焊焊补。中、小型铝铸件有些工厂采用气焊焊补。在用气焊焊补时,为了去除焊件表面的氧化膜,一般都要使用焊药(焊剂)。而铝件焊药差不多都是用不同比例的氯化物和氟化物组成的。这种焊药对于铝件都具有很强的腐蚀作用,焊后必须用酸液彻底清理焊缝和 Defects of large aluminum castings can be repaired by manual arc welding. In some small aluminum castings used in some factories gas welding repair. When welding with gas welding, in order to remove the oxide film on the surface of the weldment, generally use the flux (flux). Almost all of the aluminum flux is composed of different proportions of chloride and fluoride. This flux for aluminum parts have a strong corrosive effect, the weld must be thoroughly cleaned with acid and weld