LUBRICANT FOR PLASTIC WORKING AND METHOD FOR PLASTIC WORKING

摘要

PROBLEM TO BE SOLVED: To provide a lubricant for plastic working having remarkably excellent heat resistance as compared with that of a conventional liquid lubricant without trouble inherent to a solid lubricant such as a graphitic lubricant and suitable for working-resistant materials at room temperature and to provide a method for plastic working of a metal material utilizing the lubricant. SOLUTION: The lubricant for plastic working consists essentially of one or two or more kinds of branched type polyol esters, especially neopentyl type polyol esters in which a fatty acid is bound to 1 or≥2 hydroxy groups of a polyhydric alcohol molecule having a carbon chain of a branched structure through ester linkages. The method for plastic working of the working-resistant materials at room temperature comprises using the lubricant. COPYRIGHT: (C)2005,JPO&NCIPI