PROCEDURE FOR CONTINUOUS ANNEALING STRIP STEEL WITH CURIE PEAK AND INSTALLATION FOR CONTINUOUS ANNEALING SUCH STEEL Russian patent published in 2011 - IPC C21D1/26 C21D8/12 C21D9/46 C21D9/56 

FIELD: metallurgy.

SUBSTANCE: steel strip with Curie peak (Cp) is heated in installation for continuous annealing. The installation consists of a heating zone, of a conditioning zone and a cooling zone at temperature of annealing over Cp. During time of heating it is divided into three zones. Also, heating in the first zone is performed by means of device for radiation heating implementing gas heating and/or devices of radiation heating using electric heaters to temperature below Cp - 50°C. In the next, the second zone of heating strip steel is heated by means of device of high frequency inductive heating of a solenoid type to temperature region from (Cp - 30)°C to (Cp - 5)°C. In the last, the third heating zone strip steel is heated by means of the device of radiation heating using gas heating and/or device of radiation heating using electric heaters to specified temperature of thermal treatment above T° for uniform annealing strip steel with Cp in lengthwise direction.

EFFECT: steel strip uniform heating in lengthwise direction.

8 cl, 2 ex, 2 tbl, 13 dwg