How to repair the defects of castings

Castings due to various factors, there are holes, pinhole,slag, crack, pit defects. Commonly used repairing device for argon arc welding, resistance welding, cold welding machine. The defects of castings for the appearance and quality requirements of the welding machine can use argon arc welding machine, heat large, fast to repair. But in theprecision of compressor casting defect repair field, due toargon welding heat impact, repair will cause the deformation of castings, low hardness, trachoma, local annealing, cracking and pinhole, abrasion and scratching,biting edge, or inadequate binding force and stress injury and other two defects. Cold welding machine just toovercome the above shortcomings, its main advantages insmall heat affected zone, casting without pre heating, room temperature cold welding repair, and no deformation,undercut and residual stress, does not generate localannealing does not change the casting metal organization state. Surface defect repairing and cold welding machine is suitable for precision casting. The process of cold weldingrepair welding range is phi 1.5- Phi 1.2mm welding melting point repeatedly stacking, in a large area defect repair process, repair efficiency is the only factor that restricts itswide application. For large defects, composite application of traditional welding process and casting defect repairmachine. Sometimes we don't have a lot of defects, it is not necessary a greater input of cost, we use some repair agent can repair, convenient and simple, such as iron, we can use (Jin Sucheng) JS902 repair what you can, use upcan be put after use, which can save cost for ourmanufacturers ah, let the casting factory we put more money to improve the quality of the product itself, allowing users to create more wealth.