Hot working method of producing cubeon edge oriented silicon iron from cast slabs
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF CUBE-ON-EDGE SILICONIRON SHEET HAVING UNIFORMLY GOOD MAGNETIC PROPERTIES, COMPRISING MELTING, REFINING, CASTING INTO SLABS, HOT REDUCING TO HOT ROLLED THIN BAND, REMOVING THE HOT MILL SCALE, COLD REDUCING TO FINAL THICKNESS IN ONE OR MORE STAGES, DECARBURIZING AND RECRYSTALLIZING IN A WET HYDROGEN ANNEAL, COATING WITH A SEPARATOR AND ANNEALING IN HYDROGEN ABOVE ABOUT 1100*C. THE CAST SLABS ARE INITIALLY HOT REDUCED AT LEAST 5% AT A TEMPERATURE OF 750* TO 1250*C., THEN HEATED ABOVE 1350* C. AND HOT ROLLED TO A THICKNESS OF 2.5 MM OR LESS. THE INITIAL HOT REDUCTION PRODUCES A STRUCTURE WHICH PREVENTS EXCESSIVE GRAIN GROWTH DURING THE SUBSEQUENT HEATING AND HOT ROLLING STEPS.
Inventors
- 👤 M Littmann
Bibliographic Details
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