Aqueous solution for the cold-working treatment of steel sheet
US5814247A · kind A · utility
25Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Dec 9, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2001/228
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
According to the invention, the solution contains a water-soluble salt of heptanoic acid and an oxidizing agent and, preferably, a wetting agent. By virtue of the combination of these compounds, low concentrations are sufficient to obtain satisfactory corrosion protection, which makes it possible to maintain a nonfatty surface appearance (on the treated sheet) and facilitates the treatment of the solution effluent (or that of the subsequent degreasing effluent).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.