Milling solution and method
US5215624A · kind A · utility
12Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1991 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Dec 16, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F1/26
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A substantially nitrate-free solution for milling products of refractory metals, especially titanium, which solution contains: (a) about 5-100 g/l of ammonium bifluoride; (b) up to about 90 g/1 of hydrochloric acid; (c) a hydrogen inhibitor which may be either sodium chlorate or ammonium peroxysulfate; and (d) a balance of water and impurities. There is further disclosed a method for chemically milling, etching and/or pickling metal products, such as titanium alloy forgings, with the aforementioned solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.