LUBRICANT FOR COLD WORKING OR HOT-COLD WORKING OF METALLIC TUBE

摘要

PURPOSE:To provide the titled lubricant composed of an aqueous dispersion containing a bicarbonate as a main component and specific amounts of a dispersant and a surface active agent, giving high reduction ratio, exhibiting excellent lubricating effect in not only cold working but also hot-cold working, and removable easily after working. CONSTITUTION:The objective lubricant oil is composed of an aqueous dispersion containing 5-55(wt)% bicarbonate (e.g. sodium bicarbonate, potassium bicarbonate, etc.) as a main component, 0.1-1.0% dispersant (preferably a linear polysaccharide, silicate, fatty acid metal salt, etc.), 1-2% surface active agent (preferably fatty acid monoethanolamide, etc.) and preferably <=12% metallic soap and/or graphite. EFFECT:The composition is stable to heat, and exhibits excellent lubricating effect even under the working at 400 deg.C. USE:For the rolling and drawing, etc. of metallic sheet, bar, rod, etc.