Method and apparatus for heat-treating an article and a fixture for use in the same
US7718015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Apr 16, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A substrate (33) is clamped into a fixture (32) and material is deposited thereon to form a complex article (40). The article (40) produced is packed, using ceramic inserts (42) and a coating (41). The packing (42) ensures that the article (40) maintains its true shape and allows for expansion during the subsequent heat treatment process. The packed article (40), mounted on the fixture (32), is then placed in a box (44), encased in a granular material (43) and heated. It is heated to a temperature sufficient to relieve stresses and is maintained at this temperature for a time period such that the stresses in the article (40) are relieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.