Patents by Inventor Arild Håkonsen
Arild Håkonsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11654478Abstract: The invention provides a casting equipment (1) for casting melt (15) into a cast product (80) comprising a supply reservoir (10) for supplying the melt (15), a distribution reservoir (20), a casting apparatus (25) having a melt inlet connected to the distribution reservoir (20) for producing the cast product (80), a supply conduit (30) fluidly connecting the supply reservoir (10) and the distribution reservoir (20), an electromagnetic pump (35) provided on the supply conduit (30) and operable to generate a force in the melt (15) in the supply conduit (30), a level sensor (40) for measuring a level of the melt (15) in the distribution reservoir (20) and/or in the supply reservoir (10), a controller operably connected to the pump (35) and the level sensor (40), wherein the supply conduit (30) is sealed or sealable from a pressure of the atmosphere, wherein the controller is configured to control an operation of the pump (35) based on a level signal from the level sensor (40), and wherein, at least during a steaType: GrantFiled: August 19, 2019Date of Patent: May 23, 2023Assignee: NORSK HYDRO ASAInventors: Arild Håkonsen, Rune Ledal
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Patent number: 11376655Abstract: A casting apparatus for continuous or semi-continuous casting having a reservoir for supplying liquid metal, a direct chill casting mold having a mold cavity for at least temporarily holding liquid metal and to at least partially solidify the liquid metal into a cast product, and a pump disposed on the flow path between the reservoir and the mold cavity, wherein the pump is operable to generate a force in the liquid metal that is acting against the tendency of the liquid metal to flow along the flow path from the reservoir into the mold cavity by gravity to control a flow of the liquid metal from the reservoir into the mold cavity, wherein the pump is a direct current electromagnetic pump.Type: GrantFiled: November 12, 2018Date of Patent: July 5, 2022Assignee: NORSK HYDRO ASAInventor: Arild Håkonsen
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Publication number: 20210323050Abstract: The invention provides a casting equipment (1) for casting melt (15) into a cast product (80) comprising a supply reservoir (10) for supplying the melt (15), a distribution reservoir (20), a casting apparatus (25) having a melt inlet connected to the distribution reservoir (20) for producing the cast product (80), a supply conduit (30) fluidly connecting the supply reservoir (10) and the distribution reservoir (20), an electromagnetic pump (35) provided on the supply conduit (30) and operable to generate a force in the melt (15) in the supply conduit (30), a level sensor (40) for measuring a level of the melt (15) in the distribution reservoir (20) and/or in the supply reservoir (10), a controller operably connected to the pump (35) and the level sensor (40), wherein the supply conduit (30) is sealed or sealable from a pressure of the atmosphere, wherein the controller is configured to control an operation of the pump (35) based on a level signal from the level sensor (40), and wherein, at least during a steaType: ApplicationFiled: August 19, 2019Publication date: October 21, 2021Applicant: NORSK HYDRO ASAInventors: Arild HÅKONSEN, Rune LEDAL
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Patent number: 10994328Abstract: 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).Type: GrantFiled: January 21, 2019Date of Patent: May 4, 2021Assignee: NORSK HYDRO ASAInventors: Arild Håkonsen, Rune Ledal, Britt Elin Gihleengen, Knut Omdal Tveito, John Erik Hafsås, Kjerstin Ellingsen, Qiang Du, Mohammed M'Hamdi
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Publication number: 20210053112Abstract: 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).Type: ApplicationFiled: January 21, 2019Publication date: February 25, 2021Applicant: NORSK HYDRO ASAInventors: Arild HÅKONSEN, Rune LEDAL, Britt Elin GIHLEENGEN, Knut Omdal TVEITO, John Erik HAFSÅS, Kjerstin ELLINGSEN, Qiang DU, Mohammed M'HAMDI
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Publication number: 20210001394Abstract: A casting apparatus for continuous or semi-continuous casting having a reservoir for supplying liquid metal, a direct chill casting mold having a mold cavity for at least temporarily holding liquid metal and to at least partially solidify the liquid metal into a cast product, and a pump disposed on the flow path between the reservoir and the mold cavity, wherein the pump is operable to generate a force in the liquid metal that is acting against the tendency of the liquid metal to flow along the flow path from the reservoir into the mold cavity by gravity to control a flow of the liquid metal from the reservoir into the mold cavity, wherein the pump is a direct current electromagnetic pump.Type: ApplicationFiled: November 12, 2018Publication date: January 7, 2021Applicant: NORSK HYDRO ASAInventor: Arild HÅKONSEN
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Equipment for continuous or semi-continuous casting of metal with improved metal filling arrangement
Patent number: 10500635Abstract: 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.Type: GrantFiled: May 23, 2016Date of Patent: December 10, 2019Assignee: NORSK HYDRO ASAInventors: Geir Atle Røen, Daniel Anders Sjølset, Arild Håkonsen, Rune Ledal, John Erik Hafsås, Ulf Håkon Tundal -
EQUIPMENT FOR CONTINUOUS OR SEMI-CONTINUOUS CASTING OF METAL WITH IMPROVED METAL FILLING ARRANGEMENT
Publication number: 20180185907Abstract: 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.Type: ApplicationFiled: May 23, 2016Publication date: July 5, 2018Applicant: Norsk Hydro ASAInventors: Geir Atle RØEN, Daniel Anders SJØLSET, Arild HÅKONSEN, Rune LEDAL, John Erik HAFSÅS, Ulf Håkon TUNDAL -
Patent number: 8561669Abstract: Equipment for the semi-continuous direct chill (DC) casting of sheet ingot or slabs of different dimensions, in particular for rolling purposes, including a mold frame (2) with a pair of facing long side walls (3) and a pair of facing short end walls (4). The walls of the mold define an upwardly open inlet for the supply of metal and a downwardly facing outlet provided with a starter block (5) on a movable support which prior to each casting closes the opening. The equipment includes a device for changing the mold dimensions where at least one end wall can be displaced to enable casting of ingots with different sizes, and it further includes a device for indirect and direct cooling of the metal during casting. The equipment also includes apparatus for flexing the long side walls (3) of the mold, thereby enabling adjustment of the flexible middle part of the long side walls (3) inwardly or outwardly to adapt to the desired sheet ingot size, the desired casting speed and/or alloy composition.Type: GrantFiled: September 7, 2009Date of Patent: October 22, 2013Assignee: Norsk Hydro ASAInventors: Harald Næss, Jr., Terje Iveland, Arild Håkonsen, Tore Strandheim, Ulf Bersås
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Patent number: 8413711Abstract: 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 (3) that is provided with an inlet connected, via supply channels (6, 18) and a distribution chamber (5), to a metal reservoir (13) and an outlet arranged in the mold with a support and devices for cooling the metal. In connection with the supply channels (6, 18) between the metal reservoir (13) and the molds (3), a metal lifting container (15) is arranged at an inlet (16) to the metal reservoir (13) via a channel (18) and to the distribution chamber (5) and the molds (3) via an outlet (17) via another channel (6).Type: GrantFiled: November 26, 2008Date of Patent: April 9, 2013Assignee: Norsk Hydro ASAInventors: Bjørn Vaagland, John Olav Fagerlie, John Erik Hafsås, Arild Håkonsen, Geir Øyen, Terje Iveland
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Publication number: 20110315339Abstract: Equipment for the semi-continuous direct chill (DC) casting of sheet ingot or slabs of different dimensions, in particular for rolling purposes, including a mould frame (2) with a pair of facing long side walls (3) and a pair of facing short end walls (4). The walls of the mould define an upwardly open inlet for the supply of metal and a downwardly facing outlet provided with a starter block (5) on a movable support which prior to each casting closes the opening. The equipment includes means for changing the mould dimensions where at least one end wall can be displaced to enable casting of ingots with different sizes, and it further includes means for indirect and direct cooling of the metal during casting.Type: ApplicationFiled: September 7, 2009Publication date: December 29, 2011Inventors: Harald Næss, JR., Terje Iveland, Arild Håkonsen, Tore Strandheim, Ulf Bersås
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Publication number: 20110048667Abstract: A device in connection with equipment for continuous or semi-continuous casting of metal, in particular direct mould (DC) casting of aluminium in the form of a billet or wire billet, comprising a mould with a cavity or mould (3) that is provided with an inlet connected, via supply channels (6, 18) and a distribution chamber (5), to a metal reservoir (13) and an outlet arranged in the mould with a support and devices for cooling the metal. In connection with the supply channels (6, 18) between the metal reservoir (13) and the moulds (3), a metal lifting container (15) is arranged that is connected at an inlet (16) to the metal reservoir (13) via a channel (18) and to the distribution chamber (5) and the moulds (3) via an outlet (17) via another channel (6).Type: ApplicationFiled: November 26, 2008Publication date: March 3, 2011Applicant: NORSK HYDRO ASAInventors: Bjorn Vaagland, John Olav Fagerlie, John Erik Hafsås, Arild Håkonsen, Geir Oyen, Terje Iveland