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
Hybrid CMOS nanowire mesh device and PDSOI device
System, method, and software for researching, analyzing and comparing expert witnesses
Active matrix substrate, method for manufacturing same, and liquid crystal display apparatus
Power-on reset circuit
Reuse of static image data from prior image frames to reduce rasterization requirements
Scissors
Real ear measurement system using thin tube
  Randomly Featured Patents
Halftone primitive watermarking and related applications
Data processing apparatus, method of registering electronic document, and computer program
Thick film conductor composition
Device for removing an elongated structure implanted in biological tissue
Method and apparatus for improving mitral valve function
VTR having magnetic-head array capable of recording/reproducing signals of a plurality of recording systems
Detergent composition
Portable electric driver
Heat recoverable article with fusible member
Drainage channel grates for athletic playing surfaces and associated methods