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http://dx.doi.org/10.5781/JWJ.2015.33.2.91

The characteristics of bead welding on steel with process parameter during the laser-arc hybrid welding(II) - Effect of heat input parameters -  

Kim, Jond-Do (Division of Marine Engineering, Korea Maritime and Ocean Univ.)
Myung, Gi-Hoon (Graduate School, Korea Maritime and Ocean Univ.)
Park, In-Duck (Busan Laser Application Support Center, Korea Institute of Machinery & Materials)
Publication Information
Journal of Welding and Joining / v.33, no.2, 2015 , pp. 91-96 More about this Journal
Abstract
The laser-arc hybrid welding of SS400 steel was carried out with the use of disk laser equipment of 6.6kW maximum power and MAG equipment of pulse mode. Parameter regarding heat input is one of the most important factors that directly affect penetration characteristics and welding defect. Therefore in this study, the effects of laser power, welding speed and current, voltage and pulse correction were investigated. As experiment result, it was found that the lower heat input, the more likely humping bead is formed at the back, and such humping bead could be suppressed by increasing laser power and arc current or decreasing welding speed, thus increasing heat input. Also deep penetration could be achieved by reducing arc voltage or pulse correction parameter in the same welding condition.
Keywords
Laser-arc hybrid welding; Laser power; Welding current; Speed; Voltage; Pulse correction; Heat input;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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