Covered electrode containing zirconium for shielded metal arc welding
US4394560A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1981 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Oct 9, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/3066
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A covered electrode for shielded metal 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 covered electrode comprises such amounts of Ni, Si, B, Nb, C and Zr as essential alloying elements that the deposited metal contains at least 40% of Ni, 3-8% of Si, 0.1-0.5% of B, 0.3-2.0% of Nb, 0.2-1.5% of C and 0.01-0.20% of Zr, all by weight. In a preferred form, either Ni wire or Fe--Ni wire is used as the core wire, and the covering contains necessary amounts of all the essential alloying elements except Ni. The deposited metal has high wear resistance and good antifrictional property, and the presence of Zr is highly effective for preventing the occurrence of weld cracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.