Flux-cored wire, manufacturing method of welded joint, and welded joint
US10946486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2016 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Nov 12, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
According to an aspect of the present invention, there is provided a flux-cored wire including a steel sheath and a flux that fills the steel sheath. The flux contains fluorides of which a total value α of F-equivalent values is 0.21% or more, oxides of which the total value β of amounts ranges from 0.30% to 3.50%, and carbonates of which a total value of amounts ranges from 0% to 3.50%. An amount of CaO ranges from 0% to 0.20%. An amount of iron powder ranges from 0% to less than 10.0%. A Y-value is 5.0% or less. The amount of CaF2 is less than 0.50%. The amount of Ti oxides ranges from 0.10% to 2.50%. A ratio of α to β ranges from 0.10 to 4.00. A total value of amounts of MgCO3, Na2CO3, and LiCO3 ranges from 0% to 3.00%. A chemical composition excluding the fluorides, the oxides, the CaO, the carbonates, and the iron powder is within a predetermined range. Ceq ranges from 0.10% to 0.44%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.