電子ビーム溶接の欠陥発生および防止に関する研究(第1報)

DOI

書誌事項

タイトル別名
  • A Study on Occurrence and Prevention of Defects of Electron Bean Welding (Report No.1)
  • Blow hole and Void of Electron Beam Welds of Carbon Steels
  • 炭素鋼電子ビーム溶接部のblow-holeおよびvoid

抄録

Six types of plain carbon steels were electron beam welded using a 150kV high vacuum type machine. In the preliminary testing, a set of welding parameters was selected which produced the largest amount of blow-holes and voids at 20 mm penetration. Using this condition, effects of beam oscillation (X, Y, circle) of various frequencies and double welding on defect-formation were investigated.<BR>It was found that 100 to 1000 Hz X(in line of welding) beam oscillation and double pass welding were effective to prevent above mentioned defects, and (C) × (O) showed the best coincidence with the tendency of defect-occurrence.<BR>These findings suggest that formation of CO gas during welding is the main cause of blow-holes and voids, however (Mn) contents showed the same degree of coincidence which suggest another mechanism of defect-formation as proposed by Arata et al. Conclusions are left to further studies.<BR>Spikes did not change appreciably among six materials, and this fact seems to support the theory proposed by Tong.<BR>From metallurgical investigations, the anthers propose to adopt qp=EI/vp (J/cm2, where E: accerelating voltage kV, I: beam current mA, v; welding speed cm/sec, p: depth of penetration cm) parameter for metallurgical as well as deformation and stress analysis.

収録刊行物

  • 溶接学会誌

    溶接学会誌 43 (7), 678-683, 1974

    一般社団法人 溶接学会

詳細情報

  • CRID
    1390282681475865472
  • NII論文ID
    130003763283
  • DOI
    10.2207/qjjws1943.43.678
  • ISSN
    18837204
    00214787
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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