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Development of a Welded Copper-Brass Automotive Radiator
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Abstract
During the last several years, Modine Manufacturing Company has been developing a high reliability, durable heavy-duty (class 7 and 8) truck radiator.
This development work has culminated in the Beta-Weld™(1) radiator which was commercially offered to the heavy duty truck markets beginning in June 1982.
The objective was to research and develop a heavy-duty truck radiator that possesses substantially improved reliability and durability compared to the “state-of-the-art” soldered tube-to-header joint radiator(2). In addition, it was desired to improve resistance to solder-bloom corrosion which is sometimes a severe field problem.
The extensive process and product R&D resulted in the development of a copper/brass, welded tube-to-header joint radiator core, that also incorporates seam-welded tubes. The air-side of the tube-to-header joints are soldered to provide a “dual bond” that reinforces and seals the weld joint.
A comprehensive test program was initiated to characterize the structural performance of the Beta-Weld radiator. This paper presents data that compare the structural behavior of conventional-soldered radiators to Beta-Weld™ radiators. Thermal cycle, pressure cycle, and shake-test data are emphasized. In addition, extensive field-test results are also presented.
The data show that the Beta-Weld ™ radiator possesses exceptional durability and reliability. The results demonstrate a substantial improvement in resistance to tube- to-header joint failure. Virtually absolute immunity to solder-bloom corrosion has also been documented. Field fleet testing verified the laboratory evaluations.
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Anders, J., Carravetta, J., Nutt, R., and Saperstein, Z., "Development of a Welded Copper-Brass Automotive Radiator," SAE Technical Paper 830022, 1983, https://doi.org/10.4271/830022.Also In
References
- R. E. Beal “How Processing Affects Solder Joint Strength” Copper Development Assn., Inc 1969
- M. A. H. Howes Z. P. Saperstein “Mechanical Properties of Soldered Joints in Copper Alloys” Copper Development Assn., Inc 1968
- M. A. H. Howes Z. P. Saperstein “Reaction of Lead-Tin Solders With Copper Alloys” Copper Development Assn., Inc 1967
- M. A. H. Howes Z. P. Saperstein “Improved Methods for Manufacturing Copper and Brass Automotive Radiators” Copper Development Assn., Inc 1966
- Nightingale S. J. Hudson, O. F. “Tin Solders: A Modern Study of the Properties of Tin Solders and Soldered Joints” Chemical Publishing Co., Inc. 1942
- Chadwick, R. “The Strength of Soft Soldered Joints” The Metal Industry 1938 311 315
- M. A. H. Howes Z. P. Saperstein “The Dissolution of Alpha Brass by Lead-Tin Solders” Copper Development Assn., Inc 1966
- R. E. Beal “Soldered Joint Properties at Radiator Operating Temperatures” Copper Development Assn 1971
- R. E. Beal “Testing Solder for Corrosion by Engine Coolants” Copper Development Ass., Inc 1976