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[CN 202010221752.6] Tube rolling forming hydraulic press
[CN 202010221752.6] Title of a tube rolling forming hydraulic press: Application number of a tube rolling forming hydraulic press: CN 202010221752.6 Applicant: Yanshan University Application Date: 2020-3-26 Patent Type: Application for the Invention The present invention discloses a tube rolling forming hydraulic press, which includes a frame on which an upper rolling mechanism, a lower rolling mechanism, a fixed fluid expansion hydraulic cylinder and a moving fluid expansion hydraulic cylinder are arranged, the upper rolling mechanism and the lower rolling mechanism are disposed opposite to each other, the upper rolling mechanism and the lower rolling mechanism are configured to roll the surface of the pipe to be processed, the fixed hydraulic expansion cylinder and the movable hydraulic expansion cylinder are disposed opposite to each other, and the fixed hydraulic expansion cylinder and the movable hydraulic expansion cylinder are configured to perform hydraulic bulging on the pipe to be processed. The invention makes the pipe to be processed in the internal pressure hydraulic expansion and external rolling forming at the same time under the action of forming, to be processed pipe shrinking diameter and expanding diameter at the same time, and to coordinate with each other, not only to achieve shape forming, but also as far as possible to make the bulging area wall thickness not too thin, enhance the uniformity of the wall thickness and performance of the forming products.
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