公开(公告)号：EP2370604B1

公开(公告)日：2018-11-14

申请号：EP09755899.3

申请日：2009-11-18

申请人： Rina Consulting - Centro Sviluppo Materiali S.p.A.

发明人： FORTUNATI, Stefano ,  ABBRUZZESE, Giuseppe ,  CICALE', Stefano

IPC分类号： C21D8/12 ,  C22C38/02

CPC分类号： C21D8/1211 ,  C21D6/008 ,  C21D8/1222 ,  C21D8/1255 ,  C21D8/1272 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/16

摘要： A process for producing grain oriented magnetic sheets by subjecting a steel slab ≦̸100 mm, containing 2.5-3.5% si, to the following operations: optional first heating, to a temperature T1≦̸1250° C.; first rough hot-rolling at T2 between 900 and 1200° C., the reduction ratio (% Rid) being at least 80% in the absence of a subsequent heating or, in the presence of a subsequent heating to T3≦̸1300° C., at least 60% determined by % Rid=80−(T3−T2)/5; second finishing hot-rolling at T4