Author： Liu H.-Y. Li Z.-X. Li H. Shi Y.-W.
Publisher： Maney Publishing
ISSN： 1743-2936
Source： Science and Technology of Welding & Joining, Vol.13, Iss.8, 2008-11, pp. : 777-780
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Abstract
The metal transfer behaviour of self-shielded flux cored wire and the resultant welding spatter were investigated by using a high speed camera. Three modes of metal transfer were found, i.e. bridging transfer without arc interruption in explosive form or by surface tension, globular repelled transfer and droplet transfer, while the former two modes played a key role in the weld metal transfer. Correspondingly, the bridge explosion, discontinuous globular repelled process and the misalignment of droplets transfer were the main factors causing the welding spatter.
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