公开(公告)号：EP2133436A4

公开(公告)日：2015-04-29

申请号：EP08740220

申请日：2008-04-04

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： KOGA SHIGENOBU ,  KATAOKA TAKAHARU ,  HAMAYA TSUYOSHI ,  MOCHINAGA HIROAKI ,  ATAKE MAKOTO

IPC分类号： C21D9/56 ,  C21D8/12 ,  C21D9/46 ,  C21D9/60 ,  F27B9/28 ,  F27B9/36

CPC分类号： F27B9/28 ,  C21D8/12 ,  C21D9/46 ,  C21D9/56 ,  C21D9/60 ,  F27B9/36 ,  Y02P10/253

摘要： A continuous annealing facility comprised of a heating zone, soaking zone, and cooling zone is used for continuous annealing of a steel strip having a Curie point (Tc) by an annealing temperature over Tc during which the heat treatment in the heating zone is divided into three regions, in a first heating zone, a radiant heating means using gas heating and/or a radiant heating means using electric heaters is used to heat the steel strip to less than Tc-50°C, in a next second heating zone, the heated steel strip is heated by a solenoid coil type high frequency induction heating means to a region of Tc-30°C to Tc-5°C, and, in a final third heating zone, the heated steel strip is heated by a radiant heating means using gas heating and/or a radiant heating means using electric heaters to a treatment target temperature over Tc to thereby anneal a steel strip having a Curie point uniformly in the longitudinal direction.

公开(公告)号：EP2265089A4

公开(公告)日：2014-07-23

申请号：EP09730349

申请日：2009-03-12

申请人： NIPPON STEEL & SUMITOMO METAL CORP ,  FUJI ELECTRIC CO LTD

发明人： MOCHINAGA HIROAKI ,  ISHIZAKI KAZUNARI ,  KOGA SHIGENOBU ,  KATAOKA TAKAHARU ,  UMETSU KENJI ,  MATSUNAGA YASUO ,  IKEDA YASUYUKI

IPC分类号： H05B6/36 ,  C21D1/42 ,  C21D8/02 ,  C21D9/56 ,  C21D9/60 ,  H05B6/10 ,  H05B6/44

CPC分类号： H05B6/362 ,  C21D1/42 ,  C21D8/02 ,  C21D9/56 ,  C21D9/60 ,  Y02P10/253

摘要： There is provided an induction heating apparatus which continuously heats a steel plate using a solenoid system. The induction heating apparatus (1) includes: at least three heating coils (10A to 10D) disposed along a longitudinal direction of the steel plate to make the steel plate (2) pass through an inside thereof; and inductance adjusters (12A to 12D) disposed on electrical pathways (11) electrically connecting each of the heating coils and a power source applying a voltage to each of the heating coils and capable of generating self-induction and adjusting self-inductance in the self-induction, in which each of the inductance adjusters is disposed to cause a generation of mutual induction at least between the inductance adjusters mutually adjacent to one another.