ROLL GROOVED PASS IN MILL FOR MAKING WELDED STRAIGHT-SEAM TUBES Russian patent published in 2002 - IPC

Abstract RU 2185909 C2

FIELD: manufacture of electrically welded tubes, possibly in stands with closed grooved passes of tube forming mills. SUBSTANCE: roll grooved pass is restricted by elastic inserts whose lateral surfaces have portions tapered by angles providing prestressed condition of elastic inserts. Metallic intermediate washers are mounted on upper roll for protecting working surface of rolls against possible damages. Invention provides equalized bending efforts acting upon blank. EFFECT: enhanced quality of formed tubular blank, improved surface quality of thin-wall tubes. 1 dwg

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RU 2 185 909 C2

Authors

Mjagkov Ju.A.

Dates

2002-07-27—Published

2000-09-25—Filed