Topic
Arc welding
About: Arc welding is a research topic. Over the lifetime, 25393 publications have been published within this topic receiving 168182 citations.
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01 Jan 1988
TL;DR: In this paper, the effects of various operating parameters on penetration depth were investigated in laser + TIG and laser + MIG welding of steel plate, and the effect of welding speed, distance between TIG electrode and laser beam, focal position of laser and TIG welding current were determined.
Abstract: Effects of various operating parameters on penetration depth were investigated in laser +TIG and laser +MIG welding of steel plate. In laser +TIG welding (of C-Mn-Nb-V steel), DCEN TIG welding at 100-300A was closely followed by laser welding with 1-5kW beam power. Effects of welding speed, distance between TIG electrode and laser beam, focal position of laser and TIG welding current were determined. In laser +MIG welding (of C-Mn-Ni-Mo steel), DCEP helium-MIG welding at 400A was followed by laser welding at up to 5kW. Effects of arc-beam distance, focal position, joint preparation and laser beam power were determined.
37 citations
Patent•
09 Apr 1996
TL;DR: In this paper, compressive residual stresses can be developed by underwater plasma transferred arc welding to prevent hot cracking and He embrittlement that can develop during welding or stress corrosion cracking that can developed subsequent to the welding operation.
Abstract: Compressive residual stresses can be developed by underwater plasma transferred arc welding. The development of these compressive stresses act to prevent hot cracking and He embrittlement that can develop during welding or stress corrosion cracking that can develop subsequent to the welding operation.
37 citations
29 Jul 2005
TL;DR: Psycho-acoustic experiments are designed using custom built experimental apparatus and a digital signal processor, time delay and band-reject filters are implemented while welding to assess welders' reliance on sound.
Abstract: To better understand the acoustic characteristics used by professional welders, psycho-acoustic experiments are designed. Using custom built experimental apparatus and a digital signal processor, time delay and band-reject filters are implemented while welding to assess welders' reliance on sound.
37 citations
TL;DR: In this paper, the results of research on welding of stainless steel with a defocused laser beam are presented and discussed and discussed in this paper, where the authors mainly paid to metallurgical processes of the weld pool formation, depending on the welding conditions and obtained results prove that the use of the defocused beam allows obtaining quality welded joints, and this technique has also positive influence on the stability of the keyhole, and on the phase composition of the welding metal.
37 citations
TL;DR: In this article, a mathematic model of high speed rotational arc sensing is analyzed and a phase shift between the rotation and the current variation is also discovered in the experiments, which can be helpful for the interpretation and improvement of arc sensing systems.
Abstract: High speed rotational arc sensing is an important method to detect the torch deviation during automatic seam tracking of arc welding. In the present paper, a mathematic model of high speed rotational arc sensing is analysed. Simulations have been implemented in two conditions, namely considering or without considering weld bead profile. The simulation results are consistent with the experimental results. The current waveforms at the beginning of the welding are different from those at middle of the welding because of the formation of the weld bead profile. The signal patterns for seam tracking and endpoint detection are proposed. A phase shift between the rotation and the current variation is also discovered in the experiments. The mathematical model can be helpful for the interpretation and improvement of arc sensing systems.
37 citations