Method for recrystallisation annealing of a non-grain-oriented electric strip
AssigneeSMS group GmbH
InventorsFrank MASCHLER, Andreas BÖTTCHER, Pierre-Yves HALLEUX
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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.
Claims13
-10. (canceled)
A method for recrystallization annealing of a non-grain-oriented electric strip (2) in a continuous annealing and coating line (1), comprising:
- initially heating the electric strip (2) by a first continuous furnace (3) to a temperature of at least 300° C. at a heating rate of at most 60 K/s;
- thereafter heating the electric strip (2) in an induction furnace (5) to a temperature of at least 680° C. at a heating rate of at least 80 K/s;
- thereafter heating the electric strip (2) in a second continuous furnace (8) to a temperature of at least 820° C. at a heating rate of at most 20 K/s.
Dependencies are inferred from the claim text.