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Effect of Post Brazed Flux Residues of CAB Evaporators on the Consistency of Conversion Coating
Technical Paper
2005-01-1773
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Evaporators for automotive air-conditioning systems are being coated externally to improve corrosion resistance, water drainage, and reduce potential odor concerns. The coating durability and efficiency in achieving its corrosion resistance depends on the coating uniformity and adhesion characteristics. Good coating adhesion on aluminum surface can be achieved after freeing the surface from the oxide and flux residues. Evaporators manufactured by the Controlled Atmosphere Brazing (CAB) process have flux residue remaining on the surface, the presence of which interferes with the coating process and also affects the performance of coated components. A methodology to quantify the effect of high Nocolok flux residue on heat exchanger coating uniformity has been presented.
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Rajagopalan, R., Pierre, E., and Ramez, A., "Effect of Post Brazed Flux Residues of CAB Evaporators on the Consistency of Conversion Coating," SAE Technical Paper 2005-01-1773, 2005, https://doi.org/10.4271/2005-01-1773.Also In
References
- The Nocolok Flux Brazing Process www.solvay-fluor.com
- Nakazawa, T. Tanabe, K. Ushikubo, K. Hiraga, M. Performance Evaluation of Serpentine Evaporator for Automotive Air-conditioning System SAE paper 840384
- Warrendale, PA Claydon, D. Sugihara, A. Brazing Aluminum Automotive Heat Exchanger Assemblies Using a Non-Corrosive Flux SAE paper 830021 Warrendale PA
- Cooke, W. Bowman, A. Tunnel Furnace Brazing of Aluminum Using a Non-Corrosive Flux Welding Journal October 1980
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- Marzano. Michael Oriti. Tony An Overview of Phosphating