公开(公告)号：US20230212708A1

公开(公告)日：2023-07-06

申请号：US17927975

申请日：2021-05-03

Applicant: SMS group GmbH

Inventor： Frank MASCHLER ,  Andreas BÖTTCHER ,  Pierre-Yves HALLEUX

IPC: C21D9/60 ,  C21D8/12 ,  C21D1/42 ,  C21D9/56 ,  C21D1/76 ,  C21D6/00 ,  F27B9/28 ,  F27D11/06 ,  F27B9/36 ,  F27B9/30

CPC classification number: C21D9/60 ,  C21D8/1272 ,  C21D1/42 ,  C21D8/1283 ,  C21D9/561 ,  C21D1/76 ,  C21D6/008 ,  F27B9/28 ,  F27D11/06 ,  F27B9/36 ,  F27B9/3005

Abstract: A method for the recrystallisation annealing of a non-grain-oriented electric strip (2) in a continuous annealing and coating line (1) is presented. Therein, the electric strip (2) is heated in an induction furnace (5) to a temperature of at least 680° C. at a heating rate of at least 80 K/s and then, in an optional second continuous furnace (8), to a temperature of at least 820° C. at a heating rate of at most 20 K/s. The electric strip (2) is initially heated before the induction furnace (5) via a first continuous furnace (3) to a temperature of at least 300° C. at a heating rate of at most 60 K/s.