Water-soluble quenching medium
US5766505A · kind A · utility
5Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1997 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Feb 12, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.