Welding process and mixture of reactants for use in such process
US5062903A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Nov 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S75/959
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention provides a method and means of producing weld metal for use in joining two or more metallic pieces. The method includes the steps of providing a novel mixture of reactants comprising a reducing agent, a metallic compound which is exothermically reduced by the reducing agent, and a filler metal that does not react with the metallic compound. The mixture of reactants is then exothermically reacted so as to form the weld metal for joining the metallic pieces. At least about 90 percent by weight of the weld metal is produced by the filler metal and at least about 90 percent by weight of the weld metal has a chemical composition substantially similar to that of at least one of the metallic pieces being joined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.