PRESS-MOLDED PRODUCT, PRESS-MOLDED PRODUCT PRODUCING METHOD AND PRESS-MOLDED PRODUCT PRODUCING APPARATUS Russian patent published in 2018 - IPC B21D22/26 

FIELD: technological processes.

SUBSTANCE: invention relates to the treatment of metals by pressure, in particular to forming a preform of a steel plate having a tensile strength of 340 MPa or more, which includes an inward continuous flange in at least one end portion in a predetermined direction. First flange is formed inward in at least a part of an area of the end portion of a first surface portion. Second flange formed inward in at least a part of an area of the end portion of a second surface portion. In this case, a punch is used, a matrix with a cushion facing it, and a means for limiting deformation outside the plane of the flange.

EFFECT: folding in the flange of the rib is eliminated.

22 cl, 16 dwg, 17 ex, 1 tbl