Weldability of thin sheet metals by small-scale resistance spot welding using high-frequency inverter and capacitor-discharge power supplies

An investigation has been conducted of the weldability of 0.2-mm-thick sheet aluminum, brass, and copper in small-scale resistance spot welding using a high-frequency inverter and a capacitor-discharge power supply. The results have been compared to those of previous investigations using a line-freq...

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Bibliographic Details
Published in:Journal of electronic materials 2001-08, Vol.30 (8), p.1012-1020
Main Authors: ZHOU, Y, DONG, S. J, ELY, K. J
Format: Article
Language:English
Subjects:
Aluminum
Applied sciences
Brasses
Capacitors
Copper
Discharge
Electrode materials
Electrodes
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Expulsion
Inverters
Power supplies
Power supply
Process parameters
Pulse duration
Resistance spot welding
Weldability
Welding current
Welding parameters
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Summary:An investigation has been conducted of the weldability of 0.2-mm-thick sheet aluminum, brass, and copper in small-scale resistance spot welding using a high-frequency inverter and a capacitor-discharge power supply. The results have been compared to those of previous investigations using a line-frequency alternating current power supply. The effects of electrode materials and process parameters on joint strength, nugget diameter, weld-metal expulsion and electrode-sheet sticking were studied. This work has also provided practical guidelines for selection of power supplies, process parameters (welding current/pulse energy, welding time/pulse width, electrode forces, etc.) and electrode materials for small-scale resistance spot welding of thin sheet aluminum, brass and copper.
ISSN:0361-5235
1543-186X
DOI:10.1007/bf02657726