金属円柱の圧縮加工における潤滑剤の作用について

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タイトル別名
  • Lubrication in Compression Test on the Cylindrical Test Pieces of the Various Metals
  • キンゾク エンチュウ ノ アッシュク カコウ ニ オケル ジュンカツザイ ノ サヨウ ニ ツイテ

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抄録

There are many unknown factors in lubricating mechanism of lubricants and friction of plastic deformation of metals. The lubricating mechanism of lubricants in the rolling process has been investigated by the compression test of the cylindrical test piece as a proper method to estimate the lubricants of rolling. In this report, the compression test is conducted on aluminium, copper, mild steel and stainless steel at temperatures of 100°, 200°, 300°, 400°C and room temperature with various kinds of lubricants. The results obtained are as follows:<BR>(1) It is necessary to consider the elastic strain of the testing machine for calculating the friction coefficient from the load-strain curve of the compressing deformation.<BR>(2) In comparison with both friction coefficients of rolling and compressing, there is tendency that the rolling show a smaller friction coefficient than the compression coefficient. This is considered due to the diference in the amount of friction length.<BR>(3) In the compression test with the mineral oil of various viscosity, there is the decrease in the friction coefficient with a slight increase of viscosity in case of the viscosity below 100 Redwood sec at 50°C. However, at the viscosity of over 100 Redwood sec at 50°C, there are little change in the friction coefficient by the variety of viscosity.<BR>(4) The order of lubricaing effects is variant by the variety of lubricants, but the palm oil or beef-tarrow oil shows a lower friction coefficient at room temperature and paste oil containing MoS2, stearic acid soap or paraffine chrolide shows good lubricating effects at a high temperature.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 28 (4), 228-236, 1964

    公益社団法人 日本金属学会

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