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
Method for measuring and improving organization effectiveness
Image processing apparatus, remote management system, license update method, and computer program product
Method of bonding metallic members, and metallic bonded body
Peer to peer (P2P) missing fields and field valuation feedback
Bundled flexible cable with water resistant structure
Malicious attack detection and analysis
Arrays of optical confinements and uses thereof
  Randomly Featured Patents
Biodegradable polymer matrices for sustained delivery of local anesthetic agents
Rapid prototyping system
Cutting station for a printing press
Information recording medium and information reproducing apparatus
Walk-through metal detector
Digital audio player
Game supporting apparatus for a mobile communication terminal
Recording apparatus/method/medium and reproduction apparatus/method
Shoe heel protector
Geared expanding structures