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
Lateral flow test kit and method for detecting an analyte
Lens module and method for manufacturing thereof
Subcarrier cluster-based power control in wireless communications
Food safety printer
Generating and modifying textual code interfaces from graphical programs
Storing a location within metadata of visual media
Method and systems for detecting duplicate travel path
  Randomly Featured Patents
Electronic device for verifying a user's personal information and associated method
Method of fabricating a bipolar semiconductor device with silicide contacts
Method of and apparatus for multiplying matrix data
Test arrangement for assemblages of intergrated circuit blocks
Signal reconstruction circuit for digital signals
High liquid yield process for retorting various organic materials including oil shale
Chassis for a toy figure
Ice skate blade assembly
Method for controlling surface discharge alternating current plasma display panel with drivers periodically changing duty factor of data pulses
1,3-dioxane derivatives and composition including same