Abstract: A furnace for heating cylindrical charges, in particular billets, rods and tubes, features a transportation facility with a conveyance device which feeds the charges in the longitudinal direction through a treatment chamber, the cross-sectional shape of which is closely similar to that of the charge; the transportation device also features a jacking device which supports the charge such that, regardless of the charge diameter, the longitudinal axis of the charge is always at the same level in the treatment chamber. Situated in the walls of the treatment chamber are nozzle outlets which direct a heated jet of gas radially with respect to the longitudinal axis of the charge and onto the surface of the charge. The feeding of circulating hot gas to the supply channel for the nozzles takes place from both ends of the treatment chamber. A ventilator is situated above the mid point along the length of the treatment chamber and blows out both inlets to the feed channels.

Abstract: Apparatus for heat treatment of metal pieces such as billets, ingots, bars and the like, by pre-heating using hot gas impingement in a pre-heating furnace, and then transference into a holding furnace using forced hot air circulation where the metal pieces are held for the time required at the desired heat treatment temperature.

Abstract: Apparatus for heat treatment of metal pieces such as billets, ingots, bars and the like, by pre-heating using hot gas impingement in a pre-heating furnace, and then transference into a holding furnace using forced hot air circulation where the metal pieces are held for the time required at the desired heat treatment temperature.

Abstract: A process and installation for carrying out the process are disclosed wherein aluminium or magnesium alloys are continuously cast as extrusion billets with a high degree of automation. The billets are continuously cast, cut into lengths while warm and subjected to continuous or semi-continuous treatment. The installation allows for considerable savings in handling between stages, requires less space than conventional installations and allows for high consistency in product quality.

Abstract: An improved apparatus for cooling heated metal items such as extrusion billets, and in particular billets of aluminum alloys is disclosed. The apparatus comprises a cooling chamber, means for transporting individual billets into and out of the cooling chamber, and inlet and outlet openings for the ingress and egress of a cooling medium from said chamber. A fan or the like is employed to produce a flow of air through the cooling chamber.

Abstract: Apparatus for heat treatment of metal pieces such as billets, ingots, bars and the like, by pre-heating using direct flame impingement in a pre-heating furnace and then transferance into a holding furnace using forced hot air circulation where the metal pieces are held for the time required at the desired heat treatment temperature.

Abstract: For heat treatment metal pieces like billets, ingots, bars and the like are pre-heated by direct flame impingement in a pre-heating furnace and then transfered into a holding furnace with forced hot gas circulation where they are held for the time required at the desired heat treatment temperature.