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)
書誌事項
- タイトル別名
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- 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
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- 溶接学会誌
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溶接学会誌 43 (7), 678-683, 1974
一般社団法人 溶接学会
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詳細情報
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- CRID
- 1390282681475865472
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- NII論文ID
- 130003763283
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- ISSN
- 18837204
- 00214787
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可