Techint Compagnia Tecnica Internazionale S.p.a.

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

Giancarlo Cristiani

Danilo D'Odorico

An extrusion press has a sealing and suction device (30; 230; 330) mounted around a plunger (18; 118) with the possibility of sliding axially along the same; the device creates an airtight seal against a back face (25) of a container (20) for a billet (B) when the plunger is working within an inner chamber (24) of the container. A vacuum is created inside the chamber as soon as the plunger enters the chamber before extrusion of the billet begins.

Press assembly for extruding a billet

A billet fed extrusion press comprises a rotating arm (46) on a movable cross member (28). The arm carries a plunger (48) and a billet loader (50) spaced from each other, and can be rotated between a condition in which it brings the plunger into a working position in alignment on extrusion axis (a) of the press and the loader (50) into a billet receiving position on one side of the press, and a condition in which it brings the loader into a billet loading position along the axis (a) of the press and the pusher into a rest position on the said one side of the press.

Rapid loading short-stroke extrusion press, and process

Device to heat the leading end of aluminium ingots to be extruded when hot in extruder presses, with chambers containing the ingots arranged turret-wise with their axes parellel, the device being arranged in cooperation with the frontal end part of a chamber (12) which will cooperate with the extruder die, and in correspondence with the position for loading and readying an ingot (13), this position being located immediately upstream of the extrusion position. Method to heat the leading end (14) of a hot aluminium ingot (13) held in a chamber (12) located in a position to load and position an ingot immediately upstream of the extrusion position in a turret-type extrusion press, the leading end (14) being extracted from the chamber (12) and caused to protrude therefrom (12) and being then heated by induction and re-inserted thereafter in the chamber (12) immediately before the chamber (12) is placed in its extrusion position and the ingot (13) is extruded.

Growing community of inventors

Gorizia, Italy

Giancarlo Cristiani