Lubricant for cold plastic working of aluminum alloys

摘要

A lubricating composition comprising (A) at least one member selected from (a) a polyoxyalkylene alkyl ether phosphate diester, (b) a polyoxyalkylene alkylphenyl ether phosphate diester and (c) a phosphonate ester, in an amount of 3% by weight or more, (B) an N,N'-ethylenebis acid amide having an average particle size of 1 mu m or more in an amount of 2 to 15% by weight, and if necessary (C) a lubricating oil having a viscosity of 5 mm2/s or more (' DEG C.) is suitable for cold plastic working of aluminum alloys, particularly age-hardening type aluminum alloys, at the reduction of area of 35% or more.