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JWJ > Volume 29(6); 2011 > Article
Journal of KWJS 2011 December;29(6) :71-76.
Published online January 20, 2012.
Prediction of Weld Penetration and Deposited Metal Area in Accordance with Weld Parameters in Tandem Submerged Arc Welding Process
Se-Jin Park, Seong-Kil Nam, Chang-gil Kweon


Correspondence:   Published online January 20, 2012
ABSTRACT
  Submerged arc welding method from both sides is generally applied to the welding of main panel manufacturing process during ship construction. The tandem SAW method is applied to improve the productivity. The various weld defects that occur during tandem SAW method are melt through, incomplete penetration, undercut and overlap etc. It could be thought that the reasons for these defects are mainly lack of prediction ability for penetration depth and deposited metal area.
  In this research, total 5 kinds of welding factors for experiment like current of lead pole, voltage of lead pole, current of trail pole, voltage of trail pole and welding speed are adopted. Weld tests are carried out for the analysis of variation effects of these factors on penetration depth and deposited metal area.
  Based on the test and analysis results, it is possible to obtain the prediction equation for the effect of these factors on the amount of deposited metal and penetration depth. As per the verification of the results by additional tests, it is confirmed that the prediction equation, include a error margin of ±2㎜ for penetration depth and ±10㎟ for deposited metal area.
Keywords: Tandem submerged arc welding;Weld penetration;Deposited metal area
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