METHOD FOR BRAZING HEAT EXCHANGER AND BRAZING TREATED HEAT EXCHANGER IN A HIGH-VACUUM BRAZING FURNACE

摘要

PURPOSE: A method for brazing heat exchanger and a brazing treated heat exchanger are provided to improve workability and brazing efficiency by performing brazing work for a heat exchanger in a high-vacuum brazing furnace without using expensive filler metal. CONSTITUTION: A method for brazing a heat exchanger having a cooling pin and a separation plate includes a step of performing a nickel plating with respect to an upper surface and a lower surface of the separation plate. After forming an assembly by alternately stacking the cooling pin and the separation plate, the cooling pin and the separation plate are brazing-welded by heating the cooling pin and the separation plate through three steps. Then, the brazing treated assembly is naturally cooled and is rapidly cooled by supplying cooling gas thereto.