Effect of Welding Pressure During Ultrasonic Welding Between Nickel-Plated Copper and Aluminium Sheets

Zamiul, Alam Md and Schramkó, Márton and Kovács, Tünde Anna (2025) Effect of Welding Pressure During Ultrasonic Welding Between Nickel-Plated Copper and Aluminium Sheets. ACTA MATERIALIA TRANSYLVANICA (EN), 8 (1). pp. 47-50. ISSN 2601-8799

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Abstract

This study investigates the effect of welding pressure on ultrasonic welding of aluminium sheet and nick el-plated copper sheet. Both specimens were 60×10×0.5 mm in size with a 10 mm overlap and the coating thickness was 8–12 µm. The experiment was performed at different welding pressures from 0.14 MPa to 0.31 MPa while maintaining constant welding energy, time and amplitude. The results showed that the high est tensile strength of 380 N was achieved at a welding pressure of 0.14 MPa, while higher pressures caused a decrease in the tensile strength, which is believed to be due to internal cracks and hardening. To achieve the strongest bond, the optimal welding pressure was determined to be 0.14 MPa.

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