Gas Shielded Arc Welding of High Carbon Steel (Report 1)

DOI

Bibliographic Information

Other Title
  • 高炭素鋼のガスシールドアーク溶接に関する研究　Ｉ　　溶接金属の性質に及ぼすシールドガス組成の影響
  • 溶接金属の性質に及ぼすシールドガス組成の影響

Abstract

Hot cracking susceptibility of weld metals by angle expanding type cracking test (gas mixture ratio; 0, 20, 40%), chemical compositions of weld metals by bead welding (0, 10, 20, 30, 40, 50%) and mechanical properties, chemical compositions of weld metals by narrow gap butt welding (gap; 10 mm, 0, 20%) in the flat position and vertical position have been investigated for CO2-O2, Ar-CO2, Ar-O2 gas shielded arc welding of high carbon steel (0.65%C, 0.O26%S). The results obtained are as follows:<BR>(1) Appropriate shielding gas composition concerning hot cracking susceptibility is CO2+20%O2. In case of Ar-CO2, Ar-O2 shielding gases, hot cracking susceptibility increase as increasing gas mixture ratio.<BR>(2) In case of bead welding, carbon contents of weld metals increase 0.24%, to 0.34% as increasing gas mixture ratio. Contents of Si, Mn, Ti decrease as increasing gas mixture ratio. Decreasing tendency of these elements are in order of Ar-O2, CO2-O2 and Ar-CO2. Hot cracking are not recognized in the weld .metals:<BR>(3) In case of narrow gap welding, weld metals with sound mechanical properties (tensile test, impact test) are obtained by CO2+20%O2. Carbon contents of weld metals for butt welding in the flat position are about 0.14-0.15% and for vertical welding are about 0.18% and hot cracking are not recognized in the weld metals.

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Details 詳細情報について

  • CRID
    1390282681474624384
  • NII Article ID
    130003763666
  • DOI
    10.2207/qjjws1943.52.29
  • ISSN
    18837204
    00214787
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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