Method for manufacturing high silicon grain-oriented electrical steel sheet with superior core loss property

Method for manufacturing high silicon grain-oriented electrical steel sheet with superior core loss property

  • CN 1,692,164 A
  • Filed: 11/11/2003
  • Published: 11/02/2005
  • Est. Priority Date: 11/11/2002
  • Status: Active Application
First Claim
Patent Images

1. method of making high silicon grain-oriented electrical steel sheet, it comprises the steps:

  • that again heat and hot rolling steel billet make hot-rolled steel sheet;

    To hot-rolled steel sheet annealing with annealed sheet steel is carried out cold rolling, adjust steel plate thickness;

    Cold-rolled steel sheet is carried out decarburizing annealing;

    With the decarburizing annealing steel plate is carried out the secondary recrystallization final annealing,This improved method further may further comprise the steps;

    the silicide powder coating-forming agent that applies pulpous state on the surface of decarburizing annealing steel plate, this powder coating agents comprises the MgO powder of 100 weight parts and the Fe-Si compound sintered powder that contains 25-70wt% silicon sintered powder of 0.5-120 weight part, and the granularity of described Fe-Si compound sintered powder is-325 orders;

    The decarburizing annealing steel plate of dry gained;

    WithUnder normal condition, described steel plate is carried out final annealing.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×