Flux for submerged arc welding
US-2016175993-A1 · Jun 23, 2016 · US
Submerged arc welding process
US10688602B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10688602-B2 |
| Application number | US-201715645394-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 10, 2017 |
| Priority date | Jul 13, 2016 |
| Publication date | Jun 23, 2020 |
| Grant date | Jun 23, 2020 |
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Abstract
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A submerged arc welding process using welding wire containing, based on the total mass of the welding wire, Ni: 50% or more by mass, Cr: 14.5% to 16.5% by mass, Mo: 15.0% to 17.0% by mass, W: 3.0% to 4.5% by mass, Fe: 4.0% to 7.0% by mass, and C, Si, Mn, P, S, Cu, V, Co, and Al: a predetermined amount or less, and a bonded flux containing, based on the total mass of the bonded flux, Al 2 O 3 : 35% to 55% by mass, SiO 2 : 5% to 25% by mass, CaO: 2% to 10% by mass, CaF 2 : 25% to 45% by mass, and Na 2 O: 2% to 4% by mass.
First claim
Opening claim text (preview).
What is claimed is: 1. A submerged arc welding process using a welding wire and a bonded flux in combination, wherein the welding wire contains, based on a total mass of the welding wire, Ni: 50% or more by mass, Cr: 14.5% to 16.5% by mass, Mo: 15.0% to 17.0% by mass, W: 3.0% to 4.5% by mass, Fe: 4.0% to 7.0% by mass, C: 0.02% or less by mass (excluding 0% by mass), Si: 0.08% or less by mass (excluding 0% by mass), Mn: 1.0% or less by mass (excluding 0% by mass), P: 0.04% or less by mass (excluding 0% by mass), S: 0.03% or less by mass (excluding 0% by mass), Cu: 0.5% or less by mass (excluding 0% by mass), V: 0.35% or less by mass (excluding 0% by mass), Co: 2.5% or less by mass (excluding 0% by mass), and Al: 0.1% or less by mass (excluding 0% by mass), and the bonded flux contains, based on a total mass of the bonded flux, Al 2 O 3 : 35% to 55% by mass, SiO 2 : 5% to 25% by mass, CaO: 2% to 10% by mass, CaF 2 : 25% to 45% by mass, and Na 2 O: 2% to 4% by mass, wherein the bonded flux is substantially free of Al and Si. 2. The submerged arc welding process according to claim 1 , wherein the bonded flux is substantially free of carbonates. 3. The submerged arc welding process according to claim 2 , applied to welding of steel for cryogenic liquid storage. 4. The submerged arc welding process according to claim 1 , applied to welding of steel for cryogenic liquid storage.
Assignees
Inventors
Classifications
- B23K35/3033Primary
Ni as the principal constituent · CPC title
Submerged-arc welding · CPC title
with Cr as the next major constituent · CPC title
Alumina or aluminates · CPC title
Fluorides · CPC title
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- What does patent US10688602B2 cover?
- A submerged arc welding process using welding wire containing, based on the total mass of the welding wire, Ni: 50% or more by mass, Cr: 14.5% to 16.5% by mass, Mo: 15.0% to 17.0% by mass, W: 3.0% to 4.5% by mass, Fe: 4.0% to 7.0% by mass, and C, Si, Mn, P, S, Cu, V, Co, and Al: a predetermined amount or less, and a bonded flux containing, based on the total mass of the bonded flux, Al 2 O 3 : …
- Who is the assignee on this patent?
- Kobe Steel Ltd
- What technology area does this patent fall under?
- Primary CPC classification B23K35/3033. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 23 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).