Ceramic core for investment casting and method for preparation of the same
US5387280A · kind A · utility
15Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1994 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Jan 18, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D29/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is disclosed a core mix and a method of fabricating the core for use in investment casting. The core composition comprises an acid soluble borate binder in a high percentage by weight of the composition. A refractory selected from period three nitride compounds is employed with the binder to impart strength to the core. The use of the combination of binder and refractory as disclosed herein provides a high strength core which is readily soluble by mild environmentally friendly acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.