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Methods for Minimizing or Eliminating Wastewater from Flux Slurries in Non-Corrosive Flux Brazing
Technical Paper
2001-01-1764
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
In aluminum heat exchanger production, a non-corrosive flux is applied to individual parts or to assembled units most commonly as an aqueous flux suspension by flooding, spraying or dipping. Wastewater from cleaning the fluxing apparatus and waste flux slurries are often simply diluted and discharged to the environment or treated for fluorides. This paper presents a method for eliminating wastewater from such operations by recycling and reusing the wastewater to make up new flux slurries or to top up existing slurries. Results of flux slurry filtration tests will also be presented. Other alternatives such as a master/process slurry tank configuration are discussed for minimizing the quantity of wastewater.
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Authors
Citation
Lauzon, D. and Swidersky, H., "Methods for Minimizing or Eliminating Wastewater from Flux Slurries in Non-Corrosive Flux Brazing," SAE Technical Paper 2001-01-1764, 2001, https://doi.org/10.4271/2001-01-1764.Also In
References
- Eaton, Andrew D. et. al. Standard Methods for the Examination of Water and Wastewater Washington, D.C. American Public Health Association 5-16 5-21 1995
- Kawase, H. et. al. Study of a Method for Evaluating the Brazeability of Aluminum Sheet The Welding Journal - Welding Research Supplement 396s 403s October 1989
- Takigawa, J. Okamoto, T. Materials and Process Factors in Non-corrosive Flux Brazing for Aluminum Automobile Heat Exchangers Kobelco Technology Review 16 34 38 1993
- Bolingbroke, R.K. Gray, A. Lauzon, D. Optimisation of Nocolokā¢ Brazing Conditions for Higher Strength Brazing Sheet 757 762 1997