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
Object identification apparatus and control method thereof
Method for disambiguating multiple readings in language conversion
Drawer for holding beverage cup
Stand mixer cover
Method for generating and transmitting a reference signal for uplink demodulation in a clustered DFT-spread OFDM transmission scheme
Debugging a computer program by interrupting program execution in response to access of unused I/O port
System and method for adaptively configuring an L2 cache memory mesh
  Randomly Featured Patents
Inflatable mattress for treating a patient
Carbon monoxide sensor
Tap for drainage bag, and a method of assembly
Insertion tool
Cutting tool
Circuit for maintaining the state of an output despite changes in the state of input
Mobile communications systems and methods relating to polarization-agile antennas
Wheel rim with a brake rotor
Gas injection control
Electron microscope image recording and read-out method