Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Process for producing grain-oriented electrical steel sheet having high magnetic flux density










Image Number 8 for United States Patent #5186762.

A process for producing a grain-oriented electrical steel sheet having a high magnetic flux density, comprising the steps of: heating a steel slab comprising 1.8 to 4.8 wt % Si, 0.012 to 0.050 wt % acid-soluble A1, 0.010 wt % or less N, and the balance consisting of Fe and unavoidable impurities, to a temperature for hot rolling; hot-rolling the heated slab to form a hot-rolled strip; cold-rolling the hot-rolled strip to a final product sheet thickness at a final cold rolling reduction of 80% or more by a single step of cold rolling or by two or more steps of cold rolling with an intermediate annealing step inserted therebetween; primary-recrystallization-annealing the cold-rolled strip; final-annealing the primary-recrystallization-annealed strip so that secondary-recrystallized grains substantially completely grow up in a temperature region of from 1000.degree. to 1100.degree. C. and then purification is effected above 1100.degree. C.; and subjecting the primary-recrystallization-annealed steel strip to a nitriding treatment before a secondary recrystallization occurs during the final annealing.








 
 
  Recently Added Patents
Plants and seeds of hybrid corn variety CH089600
Power management systems and designs
Method for processing power headroom and terminal thereof
Oscillation circuit
Inductive signal transfer system for computing devices
Method for forming pattern
Dimmer system and damper circuit thereof
  Randomly Featured Patents
Printing starting position controller for serial printer
Method of processing investment data and making compensation determinations and associated system
Color filter substrate and liquid crystal display device
Line lock threading systems and methods
Refiner disc with localized surface roughness
Permanent magnet and method of manufacturing same
Method of machine cutting silicon metal particulates with Si.sub.3 N.sub.4
Function expansion device and operating device using the function expansion device
Method and apparatus for receiving folded printed products from printing machines or the like
Image pickup apparatus which can eliminate a false color in the spatial frequency band during chromatic signal processing