Compositions and methods for foundry cores in high pressure die casting
US11179767B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jan 11, 2018 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Sep 2, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D29/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
“Lost” cores for use high pressure die casting, the cores preferably having a water-soluble synthetic ceramic aggregate having an appropriate strength and tolerance for various casting pressures and temperatures, an inorganic binder having sodium silicate, an additive having particulate amorphous silicon dioxide, and a refractory coating, wherein the cores have the capacity to be removed from a casting by dissolution with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.