High Cr Ni-based alloy welding wire, shielded metal arc welding rod, and weld metal formed by shielded metal arc welding
US10675720B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 27, 2012 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | May 24, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C19/05
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Provided is a high Cr Ni-based alloy welding wire with which tensile strength and weld cracking resistance of a welded portion, the integrity of the microstructure of a welded metal, and inhibition of scale generation are improved. The high Cr Ni-based alloy welding wire is configured to have an alloy composition comprising, by mass, C: 0.04% or less, Mn: 7% or less, Fe: 1 to 12%, Si: 0.75% or less, Al: 0.01 to 0.7%, Ti: 0.01 to 0.7%, Cr: 25.0 to 31.5%, Ta: 1 to 10%, and Mo: 1 to 6%, and as inevitable impurities, Ca+Mg: less than 0.002%, N: 0.1% or less, P: 0.02% or less, O: 0.01% or less, S: 0.0015% or less, H: 0.0015% or less, Cu: 0.08% or less, and Co: 0.05% or less, and the balance: Ni. Then, the high CrNi-based alloy welding wire is configured such that the contents of S, Ta, Al, and Ti satisfy the following relation (1) and the contents of Ta, Mo, and N satisfy the following relation (2): 12000S+0.58Ta−2.6Al−2Ti£19.3 (1)Ta+1.6Mo+187N35.7 (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.