溶融鋳鉄の粘性に関する研究

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書誌事項

タイトル別名
  • A Study on the Viscosity of Molten Iron
  • ヨウユウ チュウテツ ノ ネンセイ ニ カンスル ケンキュウ

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抄録

The viscosity of Fe-C-Si alloy (3.5%C, 1.20%Si) was measured by an apparatus which uses the oscillating crucible method, in order to investigate the presence of hysteresis and the difference in viscosity between white and grey iron melts of the same chemical compositions. The results obtained were summarized as follows: (1) Viscosity curves measured during the superheating process did not correspond with those during the cooling process in the temperature range of 1255° to 1480°C, and negative hysteresis was recognized. The higher the maximum heating temperature, the more wider became the width of hysteresis. (2) In this temperature range the viscosity of grey iron was higher than that of white iron. (3) In case of holding the melt at 1342° and 1288°C, the change of the viscosity coefficient with time decreased rapidly until 20 minutes of holding. Even after the further elapse of time, the difference between white iron and grey iron melt was clearly recognized, showing that the viscosity of the latter was higher than that of the former. (4) With increasing Si content up to 0.43%, the hysteresis was hardly recognized, but over 1.22%Si there appeared negative hysteresis. In both superheating and cooling processes the viscosity showed a maximum value at 1.22%Si and a minimum value at 0.43 and 2.70%Si, respectively.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 31 (6), 723-728, 1967

    公益社団法人 日本金属学会

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