合金鋼の通電加熱正面フライス加工

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タイトル別名
  • Carbide Face Milling of Alloy Steel under Electric Resistance Heating
  • ゴウキン コウ ノ ツウデン カネツ ショウメン フライス カコウ

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Surface finish and tool wear were observed and discussed when alloy steel (soft, medium and hard) was cut with carbide face milling cutter under electric resistance heating. When the soft and medium alloy steels were cut, surface finish became better with the increase of cutting temperature (the increase of current), but it became worse with further increasing of current beyond a certain value. Damage of tool was least when cutting conditions including electric current were so good that builtup edge was just disappeared, and with the increase of current, damage became more which was caused by repeated thermal stress, and further increase of current expedited the flank wear. When hard alloy steel (HRC 56) was cut, rake surface of tool was broken as a shell and the time of broken down was quick as the current was large. This damage is considered to occur by cracks which are subjected to the magnitude and number of times of repetition of thermal stree.

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