Resources Contact Us Home
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 to C. and then purification is effected above 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
Unified recovery
Bio-pesticide and method for pest control
Headset electronics
Program recording medium, image processing apparatus, imaging apparatus, and image processing method
Keypoint descriptor generation by complex wavelet analysis
Method of making an array of nucleic acid colonies
Positive electrode for secondary battery, and secondary battery
  Randomly Featured Patents
Board-mounted connector
Method and system for transmitting voice cell
Process for catalytically reducing carbonyl compounds
Method for reconstructing radiation image of a body from partial radiation images
Shiftable clutch device, particularly friction wet clutch, drive train for a hybrid system and method for operating the drive train and vehicle including the drive train
Heat-recoverable article
Friction plug welding
Method of producing a tubular foamed plastic article
Portable dispenser for packaging and dispensing colored cosmetics
Switching power supply unit