METHOD OF PRODUCING DOUBLE-TEE PROFILES Russian patent published in 2021 - IPC B21J5/00 B21K1/76 

FIELD: metal forming.

SUBSTANCE: invention relates to metal forming and can be used in production of double-tee profiles. Rectangular billet is subjected to radial forging simultaneously by two mutually perpendicular pairs of tools. As tools of one pair there used are strikers with smooth working surface, and as tools of the second pair there are strikers with working surface having incised convex flow. First, intermediate double-tee profile is produced by forming its wall with a pair of hammers with a slit convex groove. Strikers with smooth working surface are installed with distance between their working surfaces providing for alignment of rectangular workpiece relative to axis of deformation taking into account blank widening during formation of profile wall. Profile flanges are formed with strikers with smooth working surface while maintaining distance between working surfaces of hammers with incised convex groove after formation of wall.

EFFECT: result is reduced power consumption and increased resistance of tool.

1 cl, 5 dwg