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

Angelo D'Alessandro

Ettore Cernuschi

Maurizio Cosolo

Annibale Bucci

Cesare Laviosa

Giorgio Solaroli Di Briona

Mauro Baldassi

A rolling mill stand for rolling rod-shaped bodies, in particular tubular bodies, said stand comprising at least three rolls () mutually arranged to define a rolling pass line for said rod-shaped and/or tubular bodies, wherein at least one of said three rolls () is rigidly mounted on a roll holder shaft (), freely fixed in turn in a rotational manner to said stand by means of a first hollow support () and a second hollow support () arranged on opposite sides of said at least one roll (), respectively, wherein a first portion () and a second portion () of said roll holder shaft () are housed in said first hollow support () and in said second hollow support (), respectively, where the constraint between at least said first hollow support and said first portion () of the roll holder shaft is of elastic type.

Rolling mill stand with rolls axially constrained with elastic system

A rolling mill for rolling hollow or, in all cases, concave rod-shaped bodies, in particular tubes, in particular seamless tubes, said rolling mill comprising a rolling section () with a plurality of mill stands and/or rolling dies () arranged in succession to define a rolling axis Y, said rolling mill further comprising moving means for moving a mandrel () and a tubular blank () fitted onto an end portion () of said mandrel () along said rolling axis and through said mill stands or rolling dies () in succession; wherein said moving means are structured so as to move said mandrel () and said blank () along said rolling axis Y and through said mill stands or rolling dies () in succession by applying a traction on said mandrel.

Rolling mill for rolling concave, rod-shaped bodies

A billet loader for extrusion presses includes a pair of billet grippers supported by two arms. While the first arm is fixed in relation to the supporting structure, the second arm is mobile in relation to the first arm allowing a translational motion along the axis of the billet. The arms are joined together by a chain, which is parallel to the billet-press axis, consisting of links that allow bending in one direction only to form a rigid and continuous supporting device for the billet along its entire length. The billet can consist of one or more workpieces. The chain can be wound in the opposite direction around a rod.

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Paderno Dugnano, Italy

Angelo D'Alessandro