METHOD OF PRODUCING STAMPED ELEMENTS AND STAMPING DEVICE Russian patent published in 2017 - IPC B21D22/26 

FIELD: metallurgy.

SUBSTANCE: steel sheet blank stamping of high tensile strength is carried out using a stamping device comprising a stamp and a matrix. At the first step the top forming portion is carried out, formed to receive the edge line, and the formation of flanged outward edge is carried out by creating a state, in which the area located in, at least, the end portion in the longitudinal direction of the portion formed as the bottom groove of the blank, is separated from the stamp top forming the bottom groove, and at the second step approaching the upper stamp of the said area is carried out, forming the parts to obtain the edge lines and the formation completion of the bottom groove, the edge line, the vertical wall and outwardly flanged edge.

EFFECT: technological possibilities are expanded and the quality of the stamped element is increased.

7 cl, 9 dwg