Be used for instantaneous liquid phase diffsion welded the argon protection device of steel pipe intermediate frequency heating

The utility model discloses a be used for instantaneous liquid phase diffsion welded the argon protection device of steel pipe intermediate frequency heating. This the argon protection device is prepared from the high temperature resistant quartz capsule that reaches 1450 DEG C, is provided with two quartzy intake pipe of connecting the argon gas air supply with the symmetrical arrangement mode on the quartz capsule, and quartzy intake pipe center is located the third department of quartz capsule length. The quartz capsule has good thermal stability, electrical insulating property, light transmission, extremely low thermal expansion coefficient. The quartz capsule internal diameter is greater than welded tube 3 -5mm, during the instantaneous liquid phase diffsion of steel pipe intermediate frequency heating welding, with quartzy pipe box on the steel pipe, apart from intake pipe 60mm's one end and intermediate frequency heating inductor contact cooperation, steel pipe and quartzy intervascular space are seale