Flux-cored wire for welding ultrahigh tensile strength steel
US9259806B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2013 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | May 2, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/58
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a flux-cored wire for welding an ultrahigh tensile strength steel, one or more of CaF2, BaF2, SrF2, and MgF2 are included in the wire and, when a total amount thereof is defined as α, the α is more than 2.0% and equal to or less than 8.0% in terms of mass % with respect to a total mass of the wire, one or more of Ti oxide, Si oxide, Mg oxide, and Al oxide are included in the wire and, when a total amount thereof is defined as β, the β is 0.01% to 1.20% in terms of mass % with respect to the total mass of the wire, a ratio of an amount of the CaF2 with respect to the α is 0.50 or more, a ratio of the α with respect to the β is 2.0 to 800.0, and Ceq defined in the following expression is 0.60% to 1.20%, Ceq=[C]+[Si]/24+[Mn]/6+[Ni]/40+[Cr]/5+[Mo]/4+[V]/14.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.