電子ビーム加工の研究　　下敷材料による溶融物の強制排除

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  • Study on electron beam machining. Forced removal of molten part in workpiece by backing material.
  • デンシ ビーム カコウ ノ ケンキュウ シタジキ ザイリョウ ニ ヨル ヨウユ
  • Forced Removal of Molten Part in Workpiece by Backing Material
  • 下敷材料による溶融物の強制排除

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This paper deals with the forced removal of molten part in drilled hole by vapor pressure of backing material with low evaporating temperature. The following results were obtained by a thermal analysis and experiments. (1) The backing material with lower evaporating temperature than that of workpiece and with high thermal conductivity enables to remove molten part of workpiece by its vapor pressure. (2) The thermal properties of backing material for removing molten part in drilled hole can be analytically estimated for given workpiece. (3) The range of machining conditions to obtain clogless holes becomes much wider and amount of molten rock in both surfaces around hole is reduced by using backing material. (4) Backing material has the effect to increase outlet diameter of workpiece without changing inlet diameter. This effect is more remarkable in backing material with high thermal conductivity.

収録刊行物

  • 精密工学会誌

    精密工学会誌 53 (5), 789-794, 1987

    公益社団法人 精密工学会

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