High-temperature piping product and method for producing same
US9541281B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2013 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jun 25, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/13
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A high-temperature piping product is configured from a plurality of primary pipe members and a welding material. The primary pipe members are each made from an Ni-based forged alloy containing: Ni, Al, and at least one of Mo and W. The total content of the Mo and the W being 3-8 mass %. The Ni-based forged alloy exhibiting a γ′-phase dissolution temperature of from 920 to 970° C., and the γ′ phase being precipitated in 30 volume % or more in a temperature range of from 700 to 800° C. The welding material is made from an Ni-based cast alloy having a cast structure formed by welding. The Ni-based cast alloy containing: Ni, Al, and at least one of Mo and W, the total content of the Mo and the W being 9-15 mass %, the Ni-based cast alloy exhibiting a γ′-phase dissolution temperature of from 850 to 900° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.