FIELD: metallurgy.
SUBSTANCE: invention relates to a method for recrystallization annealing of isotropic electrical strip steel (2) in a continuous technological line (1) for annealing and coating. The method includes heating electrical strip steel (2) in an induction furnace (5) to a temperature of from 680°C to 950°C with heating speed from 80°C/s up to 250°C/s, wherein the electrical strip steel (2) before the induction furnace (5) is first heated in the first continuous furnace (3) to a temperature of from 300°C to 500°C with heating rate from 10°C/s up to 60°C/s.
EFFECT: suppressing the relaxation of the structure in electrical strip steel with non-oriented grain without the occurrence of condensate formation, known from the prior art.
11 cl, 2 dwg
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Authors
Dates
2023-09-26—Published
2021-05-03—Filed