期刊
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
卷 11, 期 5, 页码 583-585出版社
MANEY PUBLISHING
DOI: 10.1179/174329306X120886
关键词
cold metal transfer; CMT; MIG welding; aluminium welding
Cold metal transfer (CMT) is an automated welding process based on dip transfer welding, characterised by controlled material deposition during the short circuit of the wire electrode to the workpiece. Preliminary results are presented examining the suitability of this process for welding aluminium alloy. Trials show that in comparison with pulsed metal inert gas (MIG) welding, CMT exhibits a higher electrode melting coefficient. By adjusting the short circuit duration penetration can be controlled with only a small change in electrode deposition. Furthermore, by mixing pulsed MIG welding with CMT welding the working envelope of the process is greatly extended allowing thicker material sections to be welded with improved weld bead aesthetics.
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