METHOD OF PRODUCING HOLLOW BILLETS WITH INNER LEDGES Russian patent published in 2017 - IPC B21D15/02

Abstract RU 2608153 C2

FIELD: technological processes.

SUBSTANCE: invention relates to metal forming, particularly to production of hollow billets with inner ledges. Billet cavity is introduced with a mandrel in the form of a billet cavity with recesses on the surface. Forcing-through of the walls is performed by applying two radial forces oriented along the same straight line in opposite directions.

EFFECT: provided is increased accuracy of dimensions.

2 cl, 5 dwg

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RU 2 608 153 C2

Authors

Brovman Tatyana Vasilevna

Kutuzov Andrej Alekseevich

Dates

2017-01-16—Published

2015-03-23—Filed