Removing pattern material from investment casting molds
US4940072A · kind A · utility
5Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1989 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | May 31, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/043
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Pattern material, such as wax, is removed from an investment casting mold by vapor phase-condensation heating with a fluorochemical boiling at a temperature above the melting point of the pattern material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.