Welding wire for automatic arc welding
US4396822A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1981 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Oct 16, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/3066
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A welding wire for automatic arc welding, which is particularly suitable for use in build-up welding operation for the purpose of providing hard surface to a metal die. The welding wire consists of a continuous tubular metal casing and a core composition charged in the interior of the casing and comprises such amounts of Ni, Si, B, Nb and C as essential alloying elements that the deposited metal contains at least 40% of Ni, 3-8% of Si, 0.1-0.4% of B, 0.3-1.8% of Nb and 0.2-1.5% of C, all by weight. Preferably, either a practically pure Ni strip or an Fe-Ni alloy strip is used as the material of the casing, and the core composition in the form of a powder mixture contains necessary amounts of Ni, Si, B, Nb and C, optionally with the addition of a small amount of Zr. The deposited metal given by this welding wire has high wear resistance and good antifrictional property and seldom suffers from weld cracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.