Process of manufacturing killed steel ingots of superior quality
US4046187A · kind A · utility
2Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1975 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Jun 16, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D27/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process of manufacturing killed steel ingots of superior quality by forming the sound hot top portion and reducing the concentration of nonmetallic inclusion in the mushy zone of ingot bottom, characterized by arranging on the molten steel surface immediately after the pouring of the molten steel into a mold, a board-like molded heat-retaining material in which lining of a layer consisting of easily-flammable material is made to an exothermic, diabatic layer consisting of crushed flat charcoal, a refractory material expansible by heating and a binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.