希薄なオレイン酸を塗布した無酸素銅の二次元低速ドライ切削

概要

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Oleic acid coated on a surface of oxygen-free copper has been investigated for its effect on orthogonal dry cutting. Liquid paraffin as a non-polarity substance, liquid paraffin containing 0.02 to 2.0 mass% oleic acid as an organic polarity substance, and pure oleic acid were coated on the annealed and then pre-cut surface of the copper before the final cutting. The speed and depth of the final cutting were 1.67mm/s and 0.02mm, respectively. The following results were obtained : 1) The coating of liquid paraffin containing at least 0.02 mass% oleic acid was always effective to decrease the cutting force and to form thin flow-type chips with a fine serrated configuration on the free surface. 2) From the infrared spectrum measurement, the formation of chemisorption between oleic acid molecules and copper atoms was estimated at the upheaved region in front of the chip. 3) The chemisorbed molecules restrained the dislocation movement under the pre-cutting surface and affected the thin chip formation.
公益社団法人精密工学会の論文
2004-01-05