Method of sand coremaking
US6843303B2 · kind B2 · utility
42Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Feb 4, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C15/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for making sand particle foundry mold members. Sand particles are coated with an aqueous dispersion of a suitable binder material such as a gelatin gel. The moist gelatin coated particles are gravity fed into a pattern box for the mold member and subjected to multi-axis vibration to pack the sand in the pattern box. The moist sand is then heated with radio frequency energy to promote binder flow to the corners of the particles, and air flow is initiated to transport water from the mass of particles to harden the mass of particles into the mold member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.