Abstract 1. IN A METHOD FOR PRODUCING A HIGH MAGNETIC FLUX DENSITY, GRAIN ORIENTED ELECTRIC STEEL OR STRIP OF THE TYPE WHEREIN A STEEL INGOT PRODUCED BY CONVENTIONAL METHODS IS BROKEN DOWN INTO A SLAB, THE SLAB IS HOT ROLLED TO FORM A PLATE, THE PLATE IS COLD ROLLED IN AT LEAST ONE STEP INCLUDING A FINAL COLD ROLLING AT A REDUCTION RATE BETWEEN 65 TO 95% TO FORM A SHEET AND THE SHEET IS DECARBONIZED AND FINALLY ANNEALEED AT A TEMPERATURE ABOVE 800*C., THE IMPROVEMENT WHEREIN THE STEEL INTO CONSISTS ESSENTIALLY OF NOT MORE THAN 4.0% SI, NOT MORE THAN 0.085% CARBON 0.010 TO 0.065% ACID SOLUBLE AL, AND NOT MORE THAN 0.012% N, THE SLAB IS HEATED TO ABOVE 1200*C. TO DISSOLVE THE AIN AND THEN HOT ROLLED SUCH THAT THE SLAB IS COOLED TO A TEMPERATURE BETWEEN 1000 TO 1250*C. IN LESS THAN 200 SECONDS FROM THE TIME THE SLAB IS REMOVED FROM THE HEATING STEP, AND THE RESULTING PLATE IS COOLED FROM 1000-1250*C. TO 600*C. IN LESS THAN 200 SECONDS.
IN A METHOD FOR PRODUCING A HIGH MAGNETIC FLUX DENSITY, GRAIN ORIENTED ELECTRIC STEEL OR STRIP OF THE TYPE WHEREIN A STEEL INGOT PRODUCED BY CONVENTIONAL METHODS IS BROKEN DOWN INTO A SLAB, THE SLAB IS HOT ROLLED TO FORM A PLATE, THE PLATE IS COLD ROLLED IN AT LEAST ONE STEP INCLUDING A FINAL COLD ROLLING AT A REDUCTION RATE BETWEEN 65 TO 95% TO FORM A SHEET AND THE SHEET IS DECARBONIZED AND FINALLY ANNEALEED AT A TEMPERATURE ABOVE 800*C., THE IMPROVEMENT WHEREIN THE STEEL INTO CONSISTS ESSENTIALLY OF NOT MORE THAN 4.0% SI, NOT MORE THAN 0.085% CARBON 0.010 TO 0.065% ACID SOLUBLE AL, AND NOT MORE THAN 0.012% N, THE SLAB IS HEATED TO ABOVE 1200*C. TO DISSOLVE THE AIN AND THEN HOT ROLLED SUCH THAT THE SLAB IS COOLED TO A TEMPERATURE BETWEEN 1000 TO 1250*C. IN LESS THAN 200 SECONDS FROM THE TIME THE SLAB IS REMOVED FROM THE HEATING STEP, AND THE RESULTING PLATE IS COOLED FROM 1000-1250*C. TO 600*C. IN LESS THAN 200 SECONDS.
Claim 2
Dependent Claim
172 words
IN A METHOD FOR PRODUCING A HIGH MAGNETIC FLUX DENSITY, GRAIN ORIENTED ELECTRIC STEEL OR STRIP OF THE TYPE WHEREIN A STEEL INGOT PRODUCED BY CONVENTIONAL METHODS IS BROKEN DOWN INTO A SLAB, THE SLAB IS HOT ROLLED TO FORM A PLATE, THE PLATE IS COLD ROLLED IN AT LEAST ONE STEP INCLUDING A FINAL COLD ROLLING AT A REDUCTION RATE BETWEEN 65 TO 95% TO FORM A SHEET AND THE SHEET IS DECARBONIZED AND FINALLY ANNEALEED AT A TEMPERATURE ABOVE 800*C., THE IMPROVEMENT WHEREIN THE STEEL INTO CONSISTS ESSENTIALLY OF NOT MORE THAN 4.0% SI, NOT MORE THAN 0.085% CARBON 0.010 TO 0.065% ACID SOLUBLE AL, AND NOT MORE THAN 0.012% N, THE SLAB IS HEATED TO ABOVE 1200*C. TO DISSOLVE THE AIN AND THEN HOT ROLLED SUCH THAT THE SLAB IS COOLED TO A TEMPERATURE BETWEEN 1000 TO 1250*C. IN LESS THAN 200 SECONDS FROM THE TIME THE SLAB IS REMOVED FROM THE HEATING STEP, AND THE RESULTING PLATE IS COOLED FROM 1000-1250*C. TO 600*C. IN LESS THAN 200 SECONDS.