Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Process for preparation of grain-oriented electrical steel sheet having superior magnetic properties










Image Number 3 for United States Patent #5261971.

A silicon steel slab comprising 0.05 to 0.8% by weight of Mn and up to 0.014% by weight of S+0.405Se is heated at a temperature lower than 1280.degree. C. and hot-rolled under such conditions that the hot rolling-finish temperature is 700.degree. to 1150.degree. C., the cumulative reduction ratio at the final three passes is at least 40%, and the reduction ratio at the final pass is at least 20%, or this silicon steel slab is hot-rolled at a hot rolling-finish temperature of 750.degree. to 1150.degree. C. while adopting the above-mentioned reduction ratio according to need, is maintained at a temperature not lower than 700.degree. C. for at least 1 second, and wound at a winding temperature lower than 700.degree. C. The hot-rolled sheet is subjected to the hot-rolled sheet annealing, finally cold-rolled at a reduction ratio of at least 80%, subjected to the decarburization annealing, and then subjected to the final finish annealing. According to this process, a grain-oriented electrical steel sheet having superior magnetic properties is obtained.








 
 
  Recently Added Patents
Touch-sensitive device and communication device
Electromagnetic shield for a passive electronic component in an active medical device implantable lead
Integrated circuit devices having conductive structures with different cross sections
Asynchronous distributed de-duplication for replicated content addressable storage clusters
Magnetic resonance imaging apparatus for use with radiotherapy
Method for identifying modulators of GPCR GPR1 function
Integrated circuit packaging system with laser hole and method of manufacture thereof
  Randomly Featured Patents
Indicator label for used automobiles
Efficient routing from multiple sources to embedded DRAM and other large circuit blocks
Transaxial compression technique for sound velocity estimation
Motor driving system
Method of drilling sub-sea oil and gas production wells
Deck structure and method for building same
Airfoil shape for a compressor
Modular pulp package
Electronic equipment and method of controlling electronic equipment
Multi-phase polishing pad