Method for forming molds and core for casting metal
US8490677B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2004 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Aug 31, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C15/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present inventions provide a method for forming molds and a core which generates no gases with bad effects on the human bodies while the binders are heated. In particular, the present inventions provide a method for forming molds and a core comprising an aggregate material mixture consisting of granular aggregate materials, wherein the aqueous binders and water are foamed with stirring, filled into a space for forming molds, and caked with an evaporating water component. In an embodiment, molds can be further cured by adding cross linking agents before and after they are taken out from the space for forming. Further, an aggregate material mixture for forming molds used for the method for forming molds of the present inventions is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.