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Energy Density in Cavity during Electron Beam Welding

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Abstract

It is extremely difficult to know the energy density and its distribution in a beam hole during electron beam welding and no investigation has ever been made. This report concerns the proposition of the method and the apparatus made as a trial to investigate them. It proves that the electron beam which penetrates the test piece, forms the beam hole and passes through it has rather higher energy density than the original beam as the result under ordinary condition. It changes according as plate thickness. This fact also proves the "wall focussing effect". Furthermore, it is clarified that the energy density distribution of electron beam varies in both value and shape even under the same condition of welding and it depends upon various factors of power source of electron beam and structure of electron gun.

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Details

  • CRID
    1573105977115981824
  • NII Article ID
    110006484498
  • NII Book ID
    AA00867058
  • ISSN
    03874508
  • Text Lang
    en
  • Data Source
    • CiNii Articles

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