WATER-SOLUBLE LUBRICANT, METHOD AND APPARATUS FOR METAL WORKING BEING SUITABLE FOR USING THE SAME

摘要

A water-soluble lubricant for metal working which comprises (A) not less than 0.01 mass % and less than 5 mass % of a metal salt of an organi carboxylic acid exhibiting a property such that when 1 gram thereof placed in a vessel having a bottom area of 50 cm2 is held in a thermostat at 100°C, 80 mass % thereof is vaporized within 10 minutes, (B) 0.05 to 20 mass % of a nonionic surfactant, and water; and a method for metal working which comprises a step of applying the water-soluble lubricant for metal working on at least one surface of a thin metal sheet, and a step of subjecting the thin metal sheet to press working or cutting; and an apparatus for metal working which comprises a section for storing thin metal sheets, a driving means for withdrawing the thin metal sheet, an application means for applying the water-soluble lubricant for metal working on at least one surface of a thin metal sheet, and a working means for press working or cutting. The water-soluble lubricant for metal working is excellent in working performance capability and dryablility, and also is significantly reduced in the load upon the environment. The method and apparatus for metal working is suitable for using the lubricant.