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
Multifunction switch for vehicle having lighting module
Inhibitors of bacterial nitric oxide synthase, and related screening methods
Fuel basket spacer, apparatus and method using the same for storing high level radioactive waste
Method for producing coated steel sheet
System and method for outputting virtual textures in electronic devices
Deceleration dependent shift control
Stack and folding-typed electrode assembly and method for preparation of the same
  Randomly Featured Patents
Method of packaging semiconductor device using anisotropic conductive adhesive
Metatarsal forefoot support
Off-loading conveying system
Light fixture
Fluid container with dosage assembly
Finishing tool
Zoom lens
Methods and apparatus for context and experience sensitive prompting in voice applications
Hydrogen supplying apparatus and method for controlling hydrogen supplying apparatus
Powder feeding apparatus, pressing apparatus using the same, powder feeding method and sintered magnet manufacturing method