Metallizing of a corrodible metal with a protective metal
US4302483A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1980 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | May 21, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C4/123
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An apparatus and method for spray metallizing a coating of metal (e.g., zinc) onto one or both sides of a base metal (e.g. steel). One embodiment of the invention comprises melting the metal to be deposited, propelling first and second streams of the melted metal towards the base metal at a point of convergence adjacent to the substrate, and applying a potential difference between the streams to form an electric arc whereby superheated particles are deposited on the base metal. A second embodiment of the invention comprises melting the metal to be deposited, propelling a stream of the melted metal towards the base metal through a nozzle containing a non-consumable stationary electrode, and applying a potential difference between the molten metal and the electrode to form an electric arc whereby superheated particles are deposited on the base metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.