Electrodes for forming austenitic and duplex steel weld metal
US10799974B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2017 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Oct 28, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/05
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The disclosed technology generally relates to consumable electrode wires and more particularly to consumable electrode wires having a core-shell structure, where the core comprises chromium. In one aspect, a welding wire comprises a sheath having a steel composition and a core surrounded by the sheath. The core comprises chromium (Cr) at a concentration between about 12 weight % and about 18 weight % on the basis of the total weight of the welding wire, manganese (Mn) at a concentration between about 12 weight % and about 18 weight % on the basis of the total weight of the welding wire, nickel (Ni) at a concentration between zero and about 5 weight % on the basis of the total weight of the welding wire, and carbon (C) at a concentration greater than zero weight %, wherein concentrations of Ni, C and Mn are such that [Ni]+30[C]+0.5[Mn] is less than about 12 weight %, wherein [Ni], [C], and [Mn] represent weight percentages of respective elements on the basis of the total weight of the welding wire. The disclosed technology also relates to welding methods and systems adapted for using the chromium-comprising electrode wires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.