Topic
Shielded metal arc welding
About: Shielded metal arc welding is a research topic. Over the lifetime, 4462 publications have been published within this topic receiving 40560 citations. The topic is also known as: manual metal arc welding & flux shielded arc welding.
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Journal Article•
TL;DR: In this paper, the electrochemical transfer of oxygen was investigated for electrode negative and electrode positive polarities in the submerged arc, shielded metal arc and gas tungsten arc welding processes, and the welds showed that electrochemical reactions as well as thermochemical reactions are significant in altering the oxygen content of the weld metal.
Abstract: The electrochemical transfer of oxygen was investigated for electrode negative and electrode positive polarities in the submerged arc, shielded metal arc and gas tungsten arc welding processes. Analysis of the welds showed that electrochemical reactions as well as thermochemical reactions are significant in altering the oxygen content of the weld metal. The oxygen transfer in the submerged and shielded metal arc welding processes is strongly influenced by electrochemical reactions at the slag/metal interface, and oxygen transfer in gas tungsten arc welding is strongly influenced by electrochemical reactions at the plasma/metal interface. The electrochemical oxygen reactions at the slag/metal interface include oxygen pickup at the anode and oxygen refining at the cathode. Electrochemical oxygen reactions at the plasma/metal interface include the refining of oxygen at the anode and pickup at the cathode. Electrochemical reactions have the greatest influence on weld metal chemistry at high welding currents and at slow weld travel speeds.
15 citations
Patent•
13 Nov 2012
TL;DR: In this paper, a side arc is added into the GTA between the wire and the same tungsten that establishes the GTA with the workpiece to increase the deposition rate and eliminate the undesirable dependence of deposition rate on the weld pool mass.
Abstract: In gas tungsten arc welding (GTAW), the achievable deposition rate of the filler wire is coupled with the arc energy and the mass of the molten metal in the weld pool. In this invention, a side arc is added into the GTA (gas tungsten arc) between the wire and the same tungsten that establishes the GTA with the work-piece. While its anode provides a GMAW (gas metal arc welding) melting mechanism to completely melt the wire at high speeds, the undesirable dependence of deposition rate on the weld pool mass is also eliminated. As a result, the deposition rate is increased and the ability to provide desirable deposition rate and base metal melting/penetration freely without coupling is established for the GTAW.
15 citations
TL;DR: In this article, the authors present results from an experimental investigation on high-temperature mechanical characteristic of steel welds made using shield metal arc welding (SMAW) process, and E6013 and E7018 electrodes.
15 citations
Patent•
02 Jan 2013
TL;DR: In this paper, a pipeline welding method for welding is described, which includes processing and assembling a weld joint to form a correct welding joint form, selecting a GTAW (gas tungsten arc welding) and SMAW (shielded metal arc welding), and performing post-weld heat treatment for the finished weld joint.
Abstract: The invention discloses a pipeline welding method which includes the steps: firstly, processing and assembling a weld joint to form a correct welding joint form; secondly, selecting a GTAW (gas tungsten arc welding) and SMAW (shielded metal arc welding) combined welding method for welding; and thirdly, performing post-weld heat treatment for the finished weld joint The root is made of welding materials fine in anti-cracking performance, and the GTAW method is selected to effectively inhibit the cracking tendency of the root The strength of the weld joint is guaranteed by the combined strength of two kinds of welding materials, and the overall strength of the joint is higher than the strength of a base material
15 citations
Patent•
08 Jun 1946
TL;DR: In this paper, the reverse polarity connection of a refractory electrode in inert gasshielded arc welding has been investigated, and it has been shown that the connection can be used for direct current arc welding of sheet aluminum and magnesium.
Abstract: This invention relates to gas shielded, direct current arc welding and more particularly to reverse polarity refractory electrode inert gasshielded arc welding. In the inert gas-shielded welding of sheet aluminum and magnesium, for example, it has been found that the reverse polarity connection,...
15 citations