Method of making investment casting mold
US10953460B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2017 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Oct 25, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Various embodiments of making an investment casting mold are disclosed. The method includes coating a sacrificial pattern with a prime layer that includes a first refractory slurry and a first refractory stucco; at least partially hardening the prime layer; and coating the prime layer with an intermediate layer that includes a second refractory slurry and a second refractory stucco. The method further includes at least partially hardening the intermediate layer; coating the intermediate layer with a first backup layer that includes a first thixotropic agent, the first thixotropic agent including a first polymer emulsion; coating the first backup layer with a second backup layer that includes a second thixotropic agent, the second thixotropic agent including a second polymer emulsion; and at least partially hardening the first backup layer and the second backup layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.