Process for the preparation of pre-melted, basic welding powders for submerged arc welding
US4361449A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Sep 8, 1981 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | Sep 8, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/3602
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for the preparation of pre-melted, basic welding powder for the submerged arc welding process which consists of preparing two components, one component containing substantially oxidic compounds and maximally 5% by weight of fluoridic compounds, and the other component containing substantially fluoridic compounds and maximally 5% by weight of oxidic compounds, with the total of oxidic and fluoridic compounds corresponding to the desired analytical composition of the powder. Each of the two compounds are melted separately and, the premelted components are cooled. The cooled product is then ground to the desired grain size and thereafter mixed. The welding powders according to the invention are distinguished by a particularly low moisture content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.