Method for reducing reactivity of ferroalloys used in fabricating coated stick welding electrodes
US7521081B2 · kind B2 · utility
9Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2006 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/26
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods are presented for reducing reactivity of ferroalloys used in the manufacture of stick welding electrodes with ferroalloy coatings, in which surface metal silicon of ferroalloy powder is stabilized by dissolving or prereacting the surface silicon or silicon dioxide to provide stabilized ferroalloy powder with decreased surface reactivity to caustic silicate solutions that can be mixed with silicate solution to form a slurry for coating precut welding rods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.