Ultrasonic Welding of Copper Sheets for Heat Pumps

António B. Pereira; Joana D. Batista; Bernardo Mascate

doi:10.4028/p-xJ1xNB

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 1014Ultrasonic Welding of Copper Sheets for Heat Pumps

Ultrasonic Welding of Copper Sheets for Heat Pumps

Abstract:

Heat pumps are rapidly emerging as a crucial solution in the pursuit of decarbonization, offering significant advantages over traditional boilers due to their superior energy efficiency. The outdoor unit of a heat pump consists of around twenty key components, including a complex network of copper pipes and sheets welded to valves, connectors, and other fittings. With over thirty welded joints, there is substantial potential to reduce manufacturing time through process optimization. Copper, known for its excellent thermal and electrical conductivity, is essential in many applications. However, these same properties make welding copper particularly challenging, especially when automating industrial processes. This study explores the ultrasonic welding of copper, aiming to determine the optimal parameters for maximizing the mechanical strength of overlapping sheet joints. The optimal parameters identified for the welding process are as follows: a welding time of 3 seconds, a pressure of 6 bar, a retention time of 0.62 seconds, an initial pressure of 2 bar, a retention pressure of 2 bar, and a rising pressure for the sonotrode of 3 bar.

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Periodical:

Key Engineering Materials (Volume 1014)

Pages:

33-38

DOI:

https://doi.org/10.4028/p-xJ1xNB

Citation:

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Online since:

June 2025

Authors:

António B. Pereira*, Joana D. Batista, Bernardo Mascate

Keywords:

Copper, Ultrasonic, Welding

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* - Corresponding Author

References

[1] Wagner, G., Balle, F., & Eifler, D. (2012). Ultrasonic welding of hybrid joints. JOM, 64.

DOI: 10.1007/s11837-012-0269-5

Google Scholar

[2] Faes, K., Nunes, R., De Meester, S., De Waele, W., Rubino, F., & Carlone, P. (2023). Influence of the process parameters on the properties of Cu-Cu ultrasonic welds. J. Manuf. Mater. Process., 7(1), 19.

DOI: 10.3390/jmmp7010019

Google Scholar

[3] Srinivasan, V., Balamurugan, S., Balakarthick, B., Darshan, S. D., & Prabhu, A. D. (2021). Experimental investigation on ultrasonic metal welding of copper sheet with copper wire using Taguchi method. Mater. Today: Proc., 45, 495–501.

DOI: 10.1016/j.matpr.2020.02.100

Google Scholar

[4] Nunes, R., Faes, K., De Meester, S., et al. (2022). Influence of welding parameters and surface preparation on thin copper–copper sheets welded by ultrasonic welding process. Int. J. Adv. Manuf. Technol., 123, 373–388.

DOI: 10.1007/s00170-022-10164-9

Google Scholar

[5] Tilahun, S., Vijayakumar, M. D., Kannan, C. R., Manivannan, S., Vairamuthu, J., & Kumar, K. P. M. (2020). A Review On Ultrasonic Welding of Various Materials and Their Mechanical Properties. IOP Conf. Ser.: Mater. Sci. Eng., 988(1), 012113.

DOI: 10.1088/1757-899x/988/1/012113

Google Scholar

[6] Wu, X., Liu, T., & Cai, W. (2015). Microstructure, welding mechanism, and failure of Al/Cu ultrasonic welds. J. Manuf. Processes, 20, 321–331.

DOI: 10.1016/j.jmapro.2015.06.002

Google Scholar

[7] Shakil, M., Tariq, N., Ahmad, M., Choudhary, M., Akhter, J., & Babu, S. (2014). Effect of ultrasonic welding parameters on microstructure and mechanical properties of dissimilar joints. Mater. Des., 55, 263–273.

DOI: 10.1016/j.matdes.2013.09.074

Google Scholar

[8] Bakavos, D., & Prangnell, P. (2010). Mechanisms of joint and microstructure formation in high power ultrasonic spot welding 6111 aluminium automotive sheet. Mater. Sci. Eng. A, 527(23), 6320–6334.

DOI: 10.1016/j.msea.2010.06.038

Google Scholar

[9] Macwan, A., & Chen, D. (2016). Ultrasonic spot welding of rare-earth containing ZEK100 magnesium alloy to 5754 aluminum alloy. Mater. Sci. Eng. A, 666, 139–148.

DOI: 10.1016/j.msea.2016.04.060

Google Scholar

[10] Brito, C. B. G., Teuwen, J., Dransfeld, C. A., & Villegas, I. F. (2022). The effects of misaligned adherends on static ultrasonic welding of thermoplastic composites. Compos. Part A: Appl. Sci. Manuf., 155, Article 106810.

DOI: 10.1016/j.compositesa.2022.106810

Google Scholar