UNITED ROLLING MILL FOR CROSS-SCREW ROLLING OF SEAMLESS PIPES Russian patent published in 2017 - IPC B21B23/00 

Abstract RU 2636792 C2

FIELD: machine engineering.

SUBSTANCE: combined rolling mill for cross-screw rolling has rolls whose axes are at an angle to the axis of the product. Mill contains piercing stand (2) with forming rollers, axles which are located at an angle to the axis of the product for piercing of first pipe (7) with the first length, lesser compared to the distance to the next the finishing frame (3). The mill has a rod (6) at the end of which the first end stitching tool (20) is located, as well as a second finishing tool (21) installed next to the finishing stand (3). Finishing stand (3) is located after piercing stands (2) so that during rolling front-end first pipe (7) can be loaded into a fine pulpit (3) only after the rear end of the first pipe (7) will be completely unloaded from piercing the cage (2).

EFFECT: increase the economy of production.

16 cl, 4 dwg

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RU 2 636 792 C2

Authors

Chernuski, Ettore

Belluko, Korrado

Marini, Fabritsio

Dates

2017-11-28Published

2014-04-17Filed