Method of heat retention in a blind riser
US4566518A · kind A · utility
3Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1983 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Sep 12, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of the heat-retention in a blind riser in metal casting by using a sand mould, characterized in that an exothermic moulded composition is arranged in a drag holding cavity below a blind riser in the cope of the mould or in the neighborhood of the blind riser before the melt is poured, and thereafter the melt is poured to cause the exothermic moulded composition to float up into the blind riser to retain heat therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.