Water-soluble quenching medium

Details Water-soluble quenching medium Water-soluble quenching medium

1997-02-12

1998-06-16

Green, Anthony

Compositions

Frost-preventing, ice-thawing, thermostatic, thermophoric,...

148 28, C21D 160

Patent

active

057665052

ABSTRACT:
The invention provides a water-soluble quenching medium suitably usable for quenching of metal, which can prevent quenching cracks and quenching ununiformity while having good hardenability. The medium comprises (A) a polyalkylene glycol having a weight average molecular weight of from 10,000 to 100,000 and/or its derivative, (B) a glycol ether having a weight average molecular weight of 1,000 smaller, and optionally (C) an alkylene glycol having a weight average molecular weight of 1,000 or smaller, (D) an alkali metal carboxylate, and (E) an organic amine compound having a weight average molecular weight of 1,000 or smaller.

REFERENCES:
patent: 3802860 (1974-04-01), Gorman
patent: 4486246 (1984-12-01), Warchol
patent: 4596612 (1986-06-01), Fradique
Chemical Abstract No. 96:166693 which is an abstract of Romanian Patent Specification No. 71379 (Jun. 1981).
Chemical Abstract No. 98:183683 which is an abstract of German Patent Specification No. 3,220,931 (Dec. 1982).
Chemical Abstract No. 101:95359 which is an abstract of an article by Koiwai et al entitled "Water-soluble quenching media" (1984).
WPIDS abstract No. 68-86195P which is an abstract of German Patent Specification No. 1,242,660 (Jun. 1968).
WPIDS Abstract No. 75-65751W which is an abstract of German Patent Specification No. 2,411,827 (Sep. 1975).
WPIDS Abstract No. 82-55990E which is an abstract of Japanese Patent Specification No. 57-085923 (May. 1982).
WPIDS Abstract No. 90-321115 which is an abstract of German Patent Specification No. 278912 (May. 1990).
WPIDS Abstract No. 92-013673 which is an abstract of Japanese Patent Specification No. 03-264655 (Nov. 1991).
WPIDS Abstract No. 93-024263 which is an abstract of Japanese Patent Specification No. 04-353441 (Dec. 1992).

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