Process and apparatus for the production of hollow bodies by continuously casting in a magnetic field
US4974660A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1989 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | May 1, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/006
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The process and apparatus according to the invention relates to the continuous casting of hollow bodies of metals such as aluminium, copper, steels of all types, or other metals or alloys. The process comprises introducing a liquid metal into an annular space between an outer mold and an inner mandrel, the liquid metal being subjected in the vicinity of the mandrel to the action of a movable magnetic field which entrains it in an upward direction. The magnetic field is preferably generated by a magnetic rotor which is disposed in the mandrel. The process is used in particular for producing blanks intended for the production of non-welded pipes and tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.