Repair of mechanical parts - gas welding repair process

Machine tool maintenance, CNC machine tool maintenance, equipment overhaul, gas welding repair process

In machine tool maintenance, CNC machine tool maintenance and equipment overhaul, why should the oil dirt in the welding area be removed before adopting gas welding repair welding process?

Before adopting the gas welding repair welding process, the oil dirt in the welding area shall be removed, because the oil stain will cause pores during welding repair and affect the repair welding quality. The oil stain in the welding area can be removed by mechanical or chemical methods, or by gas welding flame heating.