Method for heat treatment of high-toughness weld metals
US4062705A · kind A · utility
12Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1974 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Jul 29, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12493
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for obtaining a weld metal having excellent toughness at low temperatures as below -40.degree. C, which method comprises heating the weld metal having a specific steel composition to its austenitizing temperature and cooling it or holding it at the temperature for not longer than 25 minutes and then quenching and tempering it. In order to further improve the low temperature toughness, the weld metal is reheated again to the Ac.sub.1 to Ac.sub.3 range. Excellent low temperature toughness of the weld metal can be obtained without the necessity of using any special welding materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.