Zirconium material welding process

The present invention discloses a zirconium welding process, the steps of: (1) to be welded to zirconium in butt welded plates form a good set of butt gap c is 2 ~ 3mm; (2) back by hand welding, then two layers on the back cover with a submerged arc weld filler: forming a filling layer first automatic argon arc welding, submerged arc welding and finally a cover cap surface forming the surface layer. In practice, the method according to the present invention with the acid tower welded item acid (apparatus diameter 3600 / 2400mm, a thickness of 12mm) longitudinal, circumferential weld by non-destructive testing pass rate of 92% of the display; measured physicochemical properties full compliance with the NB / T47011-2010 requirements. The present invention is achieved by manual + automatic welding of zirconium, zirconium improve the welding quality, reduce labor intensity welding operations, improve production efficiency.