Danieli & C. Officine Meccaniche S.p.a.

Aristide Giacomo Bertelli

Ettore Cernuschi

Fabrizio Marini

Cernuschi Ettore

Danilo Galletti

Gerhard Kulessa

Veronica Giulia Lilli Sandrini

A roll-holder cartridge for a three-tube rolling stand with means adapted to release a tube during rolling in case of emergency. The roll-holder cartridge () has on both side walls a substantially Y-shaped opening () laying with the foot at the vertical axis yoke support so as to be able to pull out the roll-holder cartridge according to a direction coinciding with the horizontal axis of the vertical axis yoke while leaving the support hanging from the fixed structure () of the rolling stand. In case of normal maintenance operation, the cartridge () is pulled out sideways from the structure of the rolling mill with the yoke support of the vertical axis roll anchored to the cartridge itself, like the other supports of the rolls.

Three-roll rolling mill stand with side change with respect to the rolling line

A method and a device for releasing a tube during a rolling process in a three-roll rolling stand in case of an emergency. The roll holder cartridge () has a longitudinal open slot () at the yoke support of the vertical axis roll so as to remove the roll holder cartridge according to a direction coinciding with the horizontal axis of the yoke support of the vertical axis roll while the support remains anchored to the fixed structure in the stand of the roll mill. In case of routine maintenance, the cartridge () is pulled out laterally with the yoke support of the vertical axis roll anchored to the cartridge itself as the other roll supports.

Three-rolling stand with lateral change

A rolling mill stand and related rolling mill for rolling rod-shaped bodies, even large in size, which meets the requirement of stiffness uniformity of the rolling mill stands in the transversal direction, all the hydraulic capsules being firmly fixed to the external structure of the rolling mill and providing for the side change of the rolls of each stand. The arrangement of rolling rolls and related extensions of each rolling mill stand is such to avoid problems of corrosion and damaging to the extensions themselves and to the reducers due to the drainage of the cooling waters.

Rolling mill stand and related rolling mill for longitudinally rolling rod-shaped bodies

A rolling stand () with three working rolls () defining a rolling axis (X) and comprising a roll-holding cartridge () in which said three working rolls () with respective chocks are accommodated; wherein a locking device () is provided for locking the position of the chocks within the roll-holding cartridge (), in order to lock the chocks in a predetermined position before carrying out a lateral extraction of the roll-holding cartridge () from the rolling stand; wherein said locking device () is of the movable type and controlled by control means.

Rolling stand with three working rolls

There is described multi-stand rolling mill with stands having four motorized rolls and provided with controls outside the stand and retractile spindles, which comprises a central body with said stands; a first platform () on a side charge position carrying the substitution stands; a second platform () on a side discharge position, opposite to said side charge position; a transversal translation device () adapted to push the substitution stands against the corresponding stands to be substituted on the central body. The stands to be substituted translate on the second platform, and the substitution stands substitute the stands to be substituted in the central body.

Multi-stand rolling mill of the longitudinal elongator kind for rod-shaped bodies, comprising four-rolls stands, and method for substituting the stands

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Bresso, Italy

Aristide Giacomo Bertelli