炭素数の異なるカルボン酸の塗布によるアルミニウムの切削抵抗の減少

概要

論文の詳細を見る
It is known that organic substances such as oleic acid (C18H3402) coated on work-hardened metal surface affect the decrease of cutting force and surface roughness. According to our FTIR measurement, it is presumed that these coating effects are caused by the chemisorption of oleic acid molecules to metallic atoms near dislocation. In the present research, two groups of coating materials are examined that is, 1) liquid paraffin or ethanol containing 0.2mass% organic substances of the number of carbon being 18 (C_<18>H_<38>, C_<18>H_<36>O_2,C_<18>H_<35>O_2Na and C_<18>H_<38>O), and 2) liquid paraffin containing 0.2 or 100mass% carboxylic acid (CxH_2xO_2,x : 2-18). Cutting speed and depth are 1.67mm/s and 0.02mm, respectively The following results were obtained. 1) Cutting force is decreased by coating of 0.2mass% carboxylic acid of x≧7. 2) Surface roughness were drastically improved by the coating of organic substances which the number of carbon is more than 12. 3) Cutting force is always decreased by coating of 0.2mass% organic substances of x=18 with the polarity (C_<18>H_<36>O_2,C_<18>H_<35>O_2Na and C_<18>H_<38>O).
公益社団法人精密工学会の論文
2001-07-05