WATER-SOLUBLE QUENCHING MEDIUM

摘要

PROBLEM TO BE SOLVED: To obtain a water-soluble quenching medium which has excellent quenching crack preventiveness, hardenability and soft spot preventiveness, has a long life and is adequately used for a hardening treatment of metals. ;SOLUTION: This water-soluble quenching medium contains (A) polyalkylene glycol having a weight average mol.wt. of 10,000 to 100,000 and/or its deriv. (B) glycol ether having a weight average mol.wt. of ≤1,000, and in some cases, (C) an alkylene glycol having a weight average mol.wt. of ≤1,000, (D) an alkali carboxylate metal salt and (E) an org. amine compd. having a weight average mol.wt. of ≤1,000.;COPYRIGHT: (C)1997,JPO