Topic
Shielding gas
About: Shielding gas is a research topic. Over the lifetime, 6697 publications have been published within this topic receiving 58668 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the results of the investigation on the interactions between laser and arc plasma during laser-arc hybrid welding on magnesium alloy AZ31B using the spectral diagnose technique were presented.
55 citations
TL;DR: In this paper, the effect of heat input on martensite formation and impact properties of gas metal arc welded modified ferritic stainless steel (409M) sheets with thickness of 4 mm was described in detail.
55 citations
Patent•
14 Jul 1971
TL;DR: A welding gun and cable apparatus utilizing quick connect and disconnect couplings to provide electrical current and shielding gas to a welding gun as well as a welding electrode if desired is described in this article.
Abstract: A welding gun and cable apparatus utilizing quick connect and disconnect couplings to provide electrical current and shielding gas to a welding gun as well as a welding electrode if desired. The welding gun includes an elongate body having a gas passage and a passage formed between the body and an outer covering through which air flows by connection to cool the body. Additionally the gas passage may also contain a liner with radially sprung fingers at one end to outwardly bias against a welding tip to retain the welding tip in a nozzle portion.
54 citations
TL;DR: An alternate cleaning process to chemical process of Ti-3Al-25V tube surface by a pulsed fiber laser and welding of the laser-cleaned tubes with end fittings by Pulsed Gas Tungsten Arc Welding (GTAW-P) technique is reported in this paper.
54 citations
TL;DR: In this paper, the feasibility of high power CO2 and Nd:YAG laser welding in both high pressure gas and water environments, to simulated water depths of 500 m, has been established.
Abstract: A hyperbaric laser welding facility has been constructed and the feasibility of high power CO2 and Nd:YAG laser welding in both high pressure gas and water environments, to simulated water depths of 500 m, has been established. From initial trials on welding through water at atmospheric pressure, it was found that the different absorption characteristics of water to 10.6 μm (CO2 laser) and 1.06 μm (Nd:YAG laser) radiation proved crucial. The Nd:YAG laser was totally unsuitable as the beam was largely diffused in the water, whereas the CO2 beam was readily absorbed and, using high speed video equipment, was found to form a high irradiance channel and a dry region around the weld area. Welding under a high pressure gas environment produced a highly energized plume which prevented keyhole welding at pressures over 1 × 106 Pa. An investigation carried out into the efficacy of a gas jet delivery system to alleviate the extent of the plume showed that argon blown horizontally across the weld was the optimum configuration, extending the welding range up to 5 × 106 Pa. A limited investigation into high pressure underwater welding showed porosity to be a problem although sound welds were produced at pressures up to 2 × 106 Pa.
54 citations