METHOD OF MAKING PART SUBJECTED TO RE-MOULDING FROM FLAT STEEL PRODUCT WITH MANGANESE CONTENT AND PART OF SUCH TYPE Russian patent published in 2020 - IPC C21D8/02 C21D6/04 C22C38/58 

FIELD: metallurgy.

SUBSTANCE: invention relates to a method of producing a part from a flat steel product with Mn content: from 4 to less than 10 wt. % C: from 0.0005 to 0.9 wt. %, Al: from 0.02 to 10 wt. %, wherein the residue is iron with inevitable steel accompanying elements, and with TRIP-effect at room temperature. In order to obtain a part which is characterized by very high strength and high residual tension and is capable of being re-moulded, a flat steel product according to the present invention, is subjected to repeated moulding by means of at least one stage of repeated moulding with production of part and, before and/or during and/or after at least one stage of repeated moulding, flat steel product is cooled to temperature of flat steel product from temperature below room temperature to −196 °C. Invention also relates to a part obtained in accordance with this method, and to use of such parts.

EFFECT: invention discloses a method of making a part of a flat steel product with manganese content and a part of such a type subjected to re-moulding.

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