VAPORIZED ELEMENTS REMOVING DEVICE FOR ZIRCALLOY TUBES

摘要

PURPOSE:To exhaust easily vaporized components in a tube by providing a ventilating passage for discharging vaporized components to a heating chamber from the tip of a tube end receiver butt-welded on the end of the zircalloy tube, and projecting the tip in the heating chamber. CONSTITUTION:A zircally tube 21 is rotated by a rotary gear 22, while the end of the zircally tube 21 is heated up by a laser heater 25. Natorium component is then vaporized and removed from the beads remaining in the inner end of the tube 21. The vaporized natorium component is guided to a heating chamber 20 through a ventilating passage 24d provided in the tube end receiver 24 and then discharged out of the heating chamber 20 together with inactive gasse generated in the chamber 20.