Creep lifetime prediction method for P92 main steam pipeline welded joint
US12061174B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2024 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Mar 28, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure discloses a creep lifetime prediction method for a P92 main steam pipeline welded joint, which includes the following. Based on the minimally invasive sampling technology and the microstructure characterization equipment, the microstructure of the P92 steel welded joint after service is obtained. An area with a most significant degradation of the P92 steel welded joint is determined by performing grading processing on the microstructure of the welded joint. The maximum main stress of the structural component is obtained through the finite element technology and the actual service pressure of the P92 steel welded component. Through the maximum main stress and the microstructure after grading, based on the temperature-related Larson-Miller creep lifetime prediction method, the creep lifetime of the welded joint under the condition is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.