Method for producing a mandrel for use in hot isostatic pressed powder metallurgy rapid tool making
US5939011A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1998 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Apr 6, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a composite mandrel (20) for use in creating a precise set of surface features inside a hot isostatic pressed (HIP) billet for producing a desired tool uses a composite nickel shell (16) and ceramic interior (18). A free form fabrication (FFF) or wax positive pattern (10) of the desired tool is made first, then a layer of nickel is deposited on the surface of the FFF positive pattern to produce a nickel shell (16) which is a negative of the desired tool. The final step in creating the composite mandrel (20) is filling the nickel shell (16) with ceramic material (18) to increase the rigidity of the nickel shell thereby forming a mandrel for use in an HIP process to make the desired tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.