Interactions Between the Materials in the Tube-Fin-Joints in Brazed Copper-Brass Heat Exchangers 2001-01-1726
The paper describes the interactions between the filler material and the copper fin in the joint in the CuproBraze® process. Due to the influence of the filler metal, part of the copper fin is alloyed. The influence of the time above the melting point of the filler material and of the maximum process-temperature were investigated. It was found that the time has the strongest influence. After laboratory tests and production scale tests a brazing window for the process has been established. That can be used to set up brazing cycles for different kind of furnaces.
From a number of wind tunnel tests it has been confirmed that when the brazing is done within this window the alloying of the fin is limited that it does not have practical influence on the thermal performance of the heat exchanger.
Citation: Tapper, L. and Ainali, M., "Interactions Between the Materials in the Tube-Fin-Joints in Brazed Copper-Brass Heat Exchangers," SAE Technical Paper 2001-01-1726, 2001, https://doi.org/10.4271/2001-01-1726. Download Citation
Author(s):
Leif Tapper, Markku Ainali
Affiliated:
Outokumpu Copper Strip AB
Pages: 8
Event:
Vehicle Thermal Management Systems Conference & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 2001 Vehicle Thermal Management Systems Conference-P-363
Related Topics:
Heat exchangers
Wind tunnel tests
Joining
Copper
Alloys
Production
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