Manufacturing method of CANDU fuel appendages by using Zr-Be alloyed strap and Fusion Brazing Process by using Zr-Be alloyed strap

摘要

The present invention relates to a method for manufacturing a deposit with a Zr-Be alloy layer and a method for melt brazing a nuclear fuel rod for heavy water reactors using the deposit. The object of the present invention is to attach a deposit (support, spacer, button) to the surface of a nuclear fuel rod that forms a nuclear fuel bundle. Etc.) When bonding, pure beryllium is not used as a filler material to prevent desorption of beryllium vapor and deposition layer, which may occur during brazing, to prevent worker safety and environmental pollution, and additionally, after the brazing, the deposit drops. The present invention provides a deposit and a melt brazing bonding process using the same to reduce the production loss rate of discarded nuclear fuel rods and deposits.;The composition of the present invention is heat-treated to prepare a heat-treated and cooled deposits (supports, spacers, buttons) in which the Zr-Be alloy layer is pre-formed on the surface of the zirconium plate, and then melt-brazed and adhered to the surface of the nuclear fuel rod by spot welding. It is characterized by.; Melting, Diffusion, Brazing, Nuclear Fuel Rods, Heavy Water Channels