Patents Assigned to ThyssenKrupp Electrical Steel EBG GmbH
  • Patent number: 7169479
    Abstract: The invention relates to a grain-oriented magnetic steel sheet including an electrically insulating coating made of an amorphous carbon-hydrogen network, which is applied after final annealing in order to ensure electrical insulation of the individual layers of the sheet. The grain-oriented magnetic steel sheet including the electrically insulating coating made of an amorphous carbon-hydrogen network can be used in transformers.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: January 30, 2007
    Assignee: ThyssenKrupp Electrical Steel EBG GmbH
    Inventors: Bernd Schuhmacher, Klaus Guenther, Hermann Hingmann, Klaus Bewilogua, Claus-Peter Klages, Heinz Dimigen, Thomas Jung
  • Patent number: 6582528
    Abstract: Method for producing non-grain-oriented electric sheet comprising: introducing steel input stock as a heated and prerolled slab into finishing rolls at a temperature of ≦1100° C. wherein the reheating temperature (TBR) corresponds to a reheating target temperature (TZBR) determined by the formula: TZBR(° C.)=1195° C.+12.716*(GSi+GAl) wherein TZBR(° C.)=target temperature of the reheated slab GSi=Si content in weight % GAl=Al content in weight % hot rolling to a thickness<3.5 mm at a final rolling temperature (TET)≧770° C. coiling at a temperature (THT) wherein THT(° C.)=154−1.8&agr;t+0.577 TET+111d/d0 wherein d0=reference thickness of the strip=3 mm d=actual thickness of the strip in mm t=time in seconds between the end of hot rolling and coiling &agr;=0.7/sec. to 1.3/sec. cooling factor pickling and cold rolling to a thickness of 0.2-1 mm.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: June 24, 2003
    Assignee: ThyssenKrupp Electrical Steel EBG GmbH
    Inventors: Thomas Böhm, Jürgen Schneider, Karl Telger, Carl-Dieter Wuppermann, Rudolf Kawalla, Karl Ernst Friedrich