Method for thermochemically treating a part while masking a portion and corresponding mask
US9889467B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 31, 2013 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Oct 31, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/513
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for thermochemically treating a part while masking a portion and corresponding mask are provided. The method includes the steps of providing a mask comprising a body with a seat, at least a deformable sealing washer located in the seat, and a tightening bushing, the body having a cavity, placing a first portion of the part in the cavity, a second portion of the part being located in a passage in the sealing washer, and a third portion of the part being located outside the mask, moving the tightening bushing to its tightened position so that the sealing washer is deformed and applied against the second portion of the part, and applying a thermochemical treatment to the third portion of the part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.