EQUIPMENT FOR HOT-ROLLED SHEET ANNEALING, HOT-ROLLED SHEET ANNEALING METHOD AND METHOD FOR DESCALING FROM SILICON-CONTAINING HOT-ROLLED STEEL SHEET Russian patent published in 2020 - IPC C21D9/60 C21D8/12 C22C38/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy. Holding zone and cooling zone, at that on the side up to the heating zone and/or on the side before entering the heating zone there is a quick heating device, through which hot-rolled sheet is heated for not less than 50 °C with heating rate of not less than 15 °C/s to improve descaling performance, scale removal can be carried out only by etching, without the need for mechanical removal of scale or heating of steel sheet during etching. Besides, the method for hot-rolled sheet annealing using the above equipment is proposed.

EFFECT: improved descaling and improved quality of the sheet surface equipment for annealing the hot-rolled sheet comprises a heating zone.

10 cl, 3 dwg, 2 tbl