Gas dynamic control of properties of welded joints from high strength alloyed steels

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17 Citations (Scopus)

Abstract

Gas dynamic control in welding with consumable electrode in conditions of two-jet gas shielding and its impact on the processes in the welding area and properties of the welded joints from high strength alloyed steel 30HGSA is considered in the paper. The results of a comparative experimental study of controlling the properties of welded joints by changing the gas dynamics of the active shielding gas are given. The impact force of a shielding gas jet on the drop of the electrode metal is 12 times higher in conditions of two-jet gas shielding than in those of single jet shielding. It is found that gas dynamics of the active shielding gas jet determines the formation of the welded joints, their chemical properties and the properties of the welded joints from high strength alloyed steels. The consumable electrode welding method with two-jet gas shielding provides controlled dynamics in the welding area and allows controlling the transfer of the electrode metal, chemical composition of the weld, stabilizing the welding process, it ensures higher mechanical properties of the welded joints.

Original languageEnglish
Pages (from-to)26-30
Number of pages5
JournalChina Welding (English Edition)
Volume23
Issue number3
Publication statusPublished - 1 Sep 2014

Keywords

  • Alloyed steel
  • Gas dynamic control
  • Properties
  • Shielding gas
  • Welded joint
  • Welding

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanics of Materials

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