MANUFACTURE OF LAMINATION TYPE HEAT EXCHANGER

摘要

PROBLEM TO BE SOLVED: To provide a lamination type heat exchanger applicable for a high temperature fluid as well as corrosive fluid which enables use as an EGR cooler in a severe corrosive environment subject to the inflow of an exhaust gas. SOLUTION: A liquid binder 32 and a powdery Ni-Cr-P alloy brazing material 33 are applied on a plate 21, fins 22 (23) are mounted on the plate 21 and a heating is made to join the fins 22 (23) by brazing on the plate 21. The result is a lamination type heat exchanger excellent in high temperature characteristic and anticorrosion. The lamination type heat exchanger applicable for a high temperature fluid as well as a corrosive fluid, impossible by the type using Cu brazing can be used as an EGR cooler in a severe corrosive environment subject to the inflow of an exhaust gas.