Method of manufacturing oriented grain magnetic steel sheets
Abstract
Abstract METHOD OF ELABORATING METAL SHEETS FOR MAGNETIC APPLICATIONS AND MORE PARTICULARLY SHEETS HAVING A SINGLE OR DOUBLE GRAIN ORIENTATION, WHICH CONSISTS IN ELABORATING A CARBON STEEL HAVING A VERY LOW SULFUR CONTENT, I.E. LESS THAN .005% AND PREFERABLY LESS THAN .003%, REHEATING THIS METAL IN STEELWORK FURNACE AND STRONGLY OXIDIZING THE METAL IN A CONTROLLED MANNER, WHILE AVOIDING ANY RESULFURIZATION, RECARBURIZING THE STEEL IN THE LADLE AND IN VACUUM TO OBTAIN VERY LOW CARBON CONTENTS, PREFEREABLY LESS THAN .005% C. SUBSEQUENTLY ADDING THE NECESSARY ALLOYING ELEMENTS, SILICON AND/OR ALUMINIUM, HOMOGENIZING THIS ADDITION BY STIRRING, CASTING INTO INGOT MOULDS, PREFERABLY WITHOUT AMBIENT AIR CONTACT, THE EXTRA-MILD STEEL THUS OBTAINED, AND FINALLY ROLLING THE RESULTING INGOTS TO CONVERT THEM INTO SHEETS HAVING A SINGLE-OR DOUBLE GRAIN STRUCTURE ORIENTATION.
Inventors
- 👤 Jean Demeaux
Bibliographic Details
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |