Low cost brazes for titanium
US7465423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2006 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Aug 20, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/0244
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A braze material and method of brazing titanium metals. The material may consist of Ti, Ni, Cu Zr, PM and M where PM is a precious metal and M may be Fe, V, Cr, Co, Mo, Nb, Mn, Si, Sn, Al, B, Gd, Ge or combinations thereof, with the (Cu+PM)/Ni ratio around 0.9. Optionally, a second brazing may be performed to rebraze any braze joint that did not braze successfully. The second brazing material has a lower braze temperature than the first and may consist of a mixture of Ti, Ni, Cu, Zr PM and M with from 1-20 wt % more Zr, PM, M or combinations thereof than the first braze. The braze material may be placed on a base material, in a vacuum furnace, and heated to form a braze joint between the braze and base material. The heating step may occur from about 800-975° C. and over 3 to 15 minutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.