圧縮加工時の摩擦係数と表面模様の関係

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タイトル別名
  • Surface Pattern of Compressed Metal with Lubricants
  • アッシュク カコウジ ノ マサツ ケイスウ ト ヒョウメン モヨウ ノ カンケイ

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The compressing test has been performed on the cylindrical test pieaces of aluminium, copper, mild steel and stainless steel of 10 mm in dia. ×10 mm in height and aluminium single crystals using various lubricants. The following results are obtained from the relationship between the microscope pattern of the compressed surface and the frictional coefficient: (1) The surface pattern of the plate after rolling are similar to that of the specimen after compressing.<BR>(2) In case of a large frictional coefficient, a glossy surface appears in the specimen in which a greater part of the specimen surface is in contact with tools. In case of a small frictional coefficient, there occurs a dull face having a rugged surface of a few microns in depth. It appeared that there was the fluid film in the sinks.<BR>(3) In the 60% deformation of the various materials with palm oil as a lubricant, the ratio of the exsistence of the fluid film to the total friction surface is 75∼85% for aluminium or copper specimens and about 10% for stainless steel.<BR>(4) From the compressing test it is considered that there are the slip and deformation bands in the rugged surface of the dull face and the lubricants fill them. This phenomenon may be one of the great differences between friction of metal sliding and plastic deformation.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 28 (5), 282-287, 1964

    公益社団法人 日本金属学会

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