電解焼入機の試作

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書誌事項

タイトル別名
  • Construction of Electrolytic Hardening Machine
  • デンカイ ヤキイレキ ノ シサク

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抄録

A trial electrolytic hardening machine of dipping type of 20 kW capacity was constructed with special regard to equality of heating and modulation of quenching speed. Equality of heating was accomplished by generating electric arc at the surface of the cathode immediately after dipping it into the solution. For that purpose a gas burner was provided and the work was heated to about 200°C before being heated electrolytically. The quenching speed was changed by either dropping or standing still the work in the solution, by varying the time in which the work is being cooled in the solution,or by changing the voltage between the terminals to which the heating voltage is switched down when the heating is over and at which the work is cooled gently in the solution. The last quenching process was studied qualitatively by analysing the voltage-current curve in the case of electrolytic heating, and the availability was comfirmed by experiments. Machine saws, plus screw drivers, and rings of travellers were satisfactorily hardened electrolytically by this machine. The circuit diagram of the machine and the conditions and the results of the hardening are given in the text.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (3), 164-168, 1959

    公益社団法人 日本金属学会

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