Norskhydro Asa

John Erik Hafsås

Arild Håkonsen

Rune Ledal

Bjørn Vaagland

Bjarne Anders Heggset

John Olav Fagerlie

Britt Elin Gihleengen

Terje Iveland

Geir Atle Røen

Ulf Håkon Tundal

Geir Øyen

Geir Olav Ånesbug

Steinar Benum

Qiang Du

Torstein Sæther

Mohammed M'Hamdi

Daniel Anders Sjølset

Knut Omdal Tveito

Kjerstin Ellingsen

Daniel Anders SJØLSET

A method for casting that includes a.) determining a diameter (D) of a cross section of a product to be cast in meter (m), b.) determining an intended steady-state casting speed (V) of the product to be cast using direct chill casting in meter per second (m/s), c.) determining a Si content (cSi) in percent by weight based on the total weight of a melt (wt-%) for the melt to be used for casting the cast product, d.) preparing a melt comprising Zn: 5.30 to 5.9 wt-%, Mg: 2.07 to 3.3 wt-%, Cu: 1.2 to 1.45 wt-%, Fe: 0 to 0.5 wt-%, Si: according to cSi, impurities up to 0.2 wt-% each and 0.5 wt-% in total, and balance aluminium, and e.) casting the melt into the cast product having the intended diameter (D) using direct chill casting, wherein the casting is carried out using the intended steady-state casting speed (V).

Method for casting

An apparatus for continuous or semi-continuous low pressure casting of metal, in particular directly-cooled (DC) casting of extended objects such as a rods, bars or billets of aluminium. The apparatus includes a frame construction with at least one chill or mould having a mould cavity that is provided with an upwardly open inlet and an outlet with cooling means. The inlet of the mould is connected to a distribution chamber receiving liquid metal from a metal store such as a holding furnace via a metal supply channel or launder. A flexible launder section is provided between the launder and the metal distribution chamber whereby the frame construction with the moulds and distribution chamber can be raised and lowered to enable complete filling of metal to the moulds. Subsequently it is possible to control the metal level in each respective mould cavity in relation to the metal level in the launder and thereby controlling the low pressure casting.

Equipment for continuous or semi-continuous casting of metal with improved metal filling arrangement

A device in connection with equipment for continuous or semi-continuous casting of metal, in particular direct mold (DC) casting of aluminum in the form of a billet or wire billet. The device includes a mold with a cavity or a mold () that is provided with an inlet connected, via supply channels () and a distribution chamber (), to a metal reservoir () and an outlet arranged in the mold with a support and devices for cooling the metal. In connection with the supply channels () between the metal reservoir () and the molds (), a metal lifting container () is arranged at an inlet () to the metal reservoir () via a channel () and to the distribution chamber () and the molds () via an outlet () via another channel (). The metal lifting container is sealed from the surroundings and has a connection socket () for connection to a vacuum source so that, when a casting operation starts, metal is sucked into the metal lifting container and lifted to a level that is higher than the level of the distribution chamber () above the molds ().

Arrangement related to equipment for continuous or semi-continuous casting of metal

A method and equipment for continuous or semi-continuous casting of metal, in particular directly-cooled (DC) casting of aluminum, including at least one mold () with a mold cavity () that is provided with an inlet () linked to a metal store and an outlet with devices () for cooling the metal so that an object in the form of an extended string, rod or bar is cast through the outlet. The metal is supplied to the mold () in such a way and with such regulation that the metallostatic pressure in the contact point (solidification zone) against the mold wall is virtually zero during casting.

Method and equipment for continuous or semicontinuous casting of metal

Growing community of inventors

Sunndalsøra, Norway

John Erik Hafsås