COPPER BRAZING METHOD FOR HEAT EXCHANGER

PROBLEM TO BE SOLVED: To prevent a crack in a pipe base metal caused by brazing a cooling pipe and fins and thus a leak of cooling water. SOLUTION: A surface of a cooling pipe 1 and fins 3 is plated with Ni to form a Ni-plated layer 4 and the cooling pipe 1 and the fins 3 are provisionally assembled...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	KISHIKAWA RYOJI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING COMBINED OPERATIONS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION HEAT EXCHANGE IN GENERAL HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS WELDING WORKING BY LASER BEAM
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prevent a crack in a pipe base metal caused by brazing a cooling pipe and fins and thus a leak of cooling water. SOLUTION: A surface of a cooling pipe 1 and fins 3 is plated with Ni to form a Ni-plated layer 4 and the cooling pipe 1 and the fins 3 are provisionally assembled and brazed with copper. Since copper does not diffuse into a grain boundary of the base metal of the pipe when the copper brazing is performed, it is possible to prevent a crack in the grain boundary and thus a leak of cooling water and it is not necessary to make a thickness of the cooling pipe larger for preventing the crack, whereby a light compact heat exchanger can be manufactured.