Другие журналы
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Korolev
Lifetime Extension of Welded Sleeves for Pipeline Repair Based on Computer Simulation
Engineering Education # 12, December 2015 DOI: 10.7463/1215.0828471 pp. 26-39
Justification of elimination of post-weld heat treatment of welded circular butts in a gas pipelines made of X80 steel with wall thickness over 30 mm
Engineering Education # 05, May 2013 DOI: 10.7463/0513.0552162 The authors consider necessity of heat treatment after welding circular butts of thick-walled gas pipelines. They analyzed two main welding technologies of fixed butts in gas pipelines – hand arc welding by an electrode with the basic type of coating, and combined welding. The weld root is produced by machine welding with a solid section wire using the STT method; filling and facing layers of the weld are produced by auto-welding with a flux-cored wire in the mixture of shielding gases using M300-C welding heads. Results of the thermal and stress analysis allow to justify elimination of post-weld heat treatment of circular butts.
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