Patents by Inventor Kai FRIEDRICH
Kai FRIEDRICH 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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Publication number: 20230339014Abstract: A casting roller or belt for a revolving chill mould of a strip casting system for the manufacture of an aluminium alloy strip and a strip casting system for manufacturing an aluminium alloy strip comprising at least one revolving chill mould with a casting gap. A method for manufacturing an aluminium alloy strip by means of a strip casting system. The object of providing a casting roller or belt or a strip casting system, by means of which, adhesion to the casting roller or belt is avoided during strip casting and a low-segregation and crack-free aluminium alloy strip can be produced, in particular under industrial conditions, is achieved by a specific surface structure, in that the surface of the casting roller or belt has a roughness value Sa of more than 5 ?m and an average peak count RPc(0.5 ?m) of less than 42 cm?1.Type: ApplicationFiled: June 29, 2023Publication date: October 26, 2023Applicant: Speira GmbHInventors: Kai-Friedrich Karhausen, Mark Badowski, Wolfgang Müller, Dirk Gade
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Patent number: 11673184Abstract: A strip casting system for aluminium and/or aluminium alloys comprising a casting furnace and a revolving chill mould having a casting gap. The revolving chill mould is designed as a roll pair, roller pair, caterpillar pair or belt pair. The strip casting system has an active means for transporting metal melt from the casting furnace to the casting gap and a casting region arranged in front of the casting gap. The casting region is delimited on one side by the revolving chill mould. A melt pool is formed in the casting region, from which metal melt flows or is drawn into the casting gap. The casting furnace is connected to the casting region by a pipe system with means for feeding the metal melt into the casting region, which can feed the metal melt to the casting region below the surface of the melt pool formed in the casting region.Type: GrantFiled: December 28, 2021Date of Patent: June 13, 2023Assignee: Speira GmbHInventors: Kai-Friedrich Karhausen, Ralph Bock, Manfred Langen, Wolfgang Müller, Mark Badowski
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Publication number: 20220118507Abstract: A strip casting system for aluminium and/or aluminium alloys comprising a casting furnace and a revolving chill mould having a casting gap. The revolving chill mould is designed as a roll pair, roller pair, caterpillar pair or belt pair. The strip casting system has an active means for transporting metal melt from the casting furnace to the casting gap and a casting region arranged in front of the casting gap. The casting region is delimited on one side by the revolving chill mould. A melt pool is formed in the casting region, from which metal melt flows or is drawn into the casting gap. The casting furnace is connected to the casting region by a pipe system with means for feeding the metal melt into the casting region, which can feed the metal melt to the casting region below the surface of the melt pool formed in the casting region.Type: ApplicationFiled: December 28, 2021Publication date: April 21, 2022Applicant: Speira GmbHInventors: Kai-Friedrich Karhausen, Ralph Bock, Manfred Langen, Wolfgang Müller, Mark Badowski
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Patent number: 10751773Abstract: Provided is a method for rolling a strip with a roll stand with at least two work rolls. A rolling gap with a pass line is defined between the work rolls. A control roll is arranged before the rolling gap of the work rolls in the rolling direction, the strip is guided into the rolling gap of the roll stand via the control roll at an entry angle relative to the pass line and the surface structure of the strip is controlled through the selection of the entry angle depending on the positioning of the control roll relative to the pass line. Also provided is an apparatus for rolling a strip with a roll stand having at least two work rolls. A rolling gap with a pass line is defined between the work rolls.Type: GrantFiled: August 4, 2017Date of Patent: August 25, 2020Assignee: Hydro Aluminium Rolled Products GmbHInventors: Kai-Friedrich Karhausen, Gernot Nitzsche
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Patent number: 10676807Abstract: The invention relates to a device for changing the temperature of a metal strip including means for changing the temperature of the metal strip by heating or cooling. By using means for conveying the metal strip, the metal strip is moved in the strip direction relative to the means for changing the temperature of the metal strip. The object of providing a device for changing the temperature of metal strips, which allows improved process control and improved flatness of the treated metal strip, is achieved according to the invention by a device in that means for changing the temperature of the metal strip include a plurality of individual temperature-control means which each heat or cool the metal strip only in some regions, and at least the position of a plurality of the temperature-control means can be individually changed translationally and/or rotationally relative to the metal strip.Type: GrantFiled: January 10, 2018Date of Patent: June 9, 2020Assignee: Hydro Aluminium Rolled Products GmbHInventors: Kai-Friedrich Karhausen, Holger Aretz
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Patent number: 10612115Abstract: The invention relates to a method for producing a strip made of an AlMgSi alloy in which a rolling ingot is cast of an AlMgSi alloy, the rolling ingot is subjected to homogenization, the rolling ingot which has been brought to rolling temperature is hot-rolled, and then is optionally cold-rolled to the final thickness thereof. The problem of providing a method for producing an aluminum strip made of an AlMgSi alloy and an aluminum strip, which has a higher breaking elongation with constant strength and therefore enables higher degrees of deformation in producing structured metal sheets, is solved in that the hot strip has a temperature of no more than 130° C. directly at the exit of the last rolling pass, preferably a temperature of no more than 100° C., and the hot strip is coiled at that or a lower temperature.Type: GrantFiled: October 30, 2015Date of Patent: April 7, 2020Assignee: Hydro Aluminium Deutschland GmbHInventors: Henk-Jan Brinkman, Thomas Wirtz, Dietmar Schröder, Eike Brünger, Kai-Friedrich Karhausen
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Patent number: 10384551Abstract: A motor vehicle having a vehicle body, which is formed at least in part from an electrically conductive material. An electrical system is arranged electrically insulated from the vehicle body and has a rectifier unit. An energy coupling device is arranged electrically insulated at the vehicle body for supplying electric energy for the electrical system. The energy coupling device has a coil for wireless magnetic coupling of an energy source that is external to the motor vehicle and provides an alternating magnetic field, wherein the coil is connected to the rectifier unit of the electrical system. An antenna unit is arranged at the vehicle body and is electrically insulated with respect to the electrical system. A decoupling device electromagnetically decouples the coil from the antenna unit.Type: GrantFiled: August 1, 2017Date of Patent: August 20, 2019Assignee: AUDI AGInventors: Thomas Rinkleff, Kai Friedrich
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Patent number: 10047422Abstract: The invention relates to a method for producing a strip made of an AlMgSi alloy in which a rolling ingot is cast of an AlMgSi alloy, the rolling ingot is subjected to homogenization, the rolling ingot which has been brought to rolling temperature is hot-rolled, and then is optionally cold-rolled to the final thickness thereof. The problem of providing a method for producing an aluminum strip made of an AlMgSi alloy and an aluminum strip, which has a higher breaking elongation with constant strength and therefore enables higher degrees of deformation in producing structured metal sheets, is solved in that the hot strip has a temperature of no more than 130° C. directly at the exit of the last rolling pass, preferably a temperature of no more than 100° C., and the hot strip is coiled at that or a lower temperature.Type: GrantFiled: December 29, 2011Date of Patent: August 14, 2018Assignee: Hydro Aluminium Deutschland GmbHInventors: Henk-Jan Brinkman, Thomas Wirtz, Dietmar Schröder, Eike Brünger, Kai-Friedrich Karhausen
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Publication number: 20180135156Abstract: The invention relates to a device for changing the temperature of a metal strip including means for changing the temperature of the metal strip by heating or cooling. By using means for conveying the metal strip, the metal strip is moved in the strip direction relative to the means for changing the temperature of the metal strip. The object of providing a device for changing the temperature of metal strips, which allows improved process control and improved flatness of the treated metal strip, is achieved according to the invention by a device in that means for changing the temperature of the metal strip include a plurality of individual temperature-control means which each heat or cool the metal strip only in some regions, and at least the position of a plurality of the temperature-control means can be individually changed translationally and/or rotationally relative to the metal strip.Type: ApplicationFiled: January 10, 2018Publication date: May 17, 2018Applicant: Hydro Aluminium Rolled Products GmbHInventors: Kai-Friedrich Karhausen, Holger Aretz
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Publication number: 20180050595Abstract: A motor vehicle having a vehicle body, which is formed at least in part from an electrically conductive material. An electrical system is arranged electrically insulated from the vehicle body and has a rectifier unit. An energy coupling device is arranged electrically insulated at the vehicle body for supplying electric energy for the electrical system. The energy coupling device has a coil for wireless magnetic coupling of an energy source that is external to the motor vehicle and provides an alternating magnetic field, wherein the coil is connected to the rectifier unit of the electrical system. An antenna unit is arranged at the vehicle body and is electrically insulated with respect to the electrical system. A decoupling device electromagnetically decouples the coil from the antenna unit.Type: ApplicationFiled: August 1, 2017Publication date: February 22, 2018Applicant: AUDI AGInventors: Thomas RINKLEFF, Kai FRIEDRICH
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Publication number: 20170355002Abstract: Provided is a method for rolling a strip with a roll stand with at least two work rolls. A rolling gap with a pass line is defined between the work rolls. A control roll is arranged before the rolling gap of the work rolls in the rolling direction, the strip is guided into the rolling gap of the roll stand via the control roll at an entry angle relative to the pass line and the surface structure of the strip is controlled through the selection of the entry angle depending on the positioning of the control roll relative to the pass line. Also provided is an apparatus for rolling a strip with a roll stand having at least two work rolls. A rolling gap with a pass line is defined between the work rolls.Type: ApplicationFiled: August 4, 2017Publication date: December 14, 2017Applicant: Hydro Aluminium Rolled Products GmbHInventors: Kai-Friedrich Karhausen, Gernot Nitzsche
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Publication number: 20160068939Abstract: The invention relates to a method for producing a strip made of an AlMgSi alloy in which a rolling ingot is cast of an AlMgSi alloy, the rolling ingot is subjected to homogenization, the rolling ingot which has been brought to rolling temperature is hot-rolled, and then is optionally cold-rolled to the final thickness thereof. The problem of providing a method for producing an aluminum strip made of an AlMgSi alloy and an aluminum strip, which has a higher breaking elongation with constant strength and therefore enables higher degrees of deformation in producing structured metal sheets, is solved in that the hot strip has a temperature of no more than 130° C. directly at the exit of the last rolling pass, preferably a temperature of no more than 100° C., and the hot strip is coiled at that or a lower temperature.Type: ApplicationFiled: October 30, 2015Publication date: March 10, 2016Applicant: HYDRO ALUMINIUM DEUTSCHLAND GMBHInventors: Henk-Jan Brinkman, Thomas Wirtz, Dietmar Schröder, Eike Brünger, Kai-Friedrich Karhausen
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Publication number: 20150152535Abstract: The invention relates to a method for producing a strip made of an AlMgSi alloy, in which a rolling ingot made of an AlMgSi alloy is cast, the rolling ingot is subjected to homogenization, the rolling ingot having been brought to rolling temperature is hot-rolled and is optionally cold-rolled to the final thickness thereafter. The problem of providing an improved method for producing aluminum strip made of an AlMgSi alloy, with which AlMgSi strips having very good shaping behaviour can be produced reliably, is solved in that immediately after exit from the final rolling pass, the hot strip has a temperature of between more than 130° C., preferably 135° C., and at most 250° C., preferably at most 230° C., and the hot strip is wound up at this temperature.Type: ApplicationFiled: March 12, 2014Publication date: June 4, 2015Applicant: Hydro Aluminium Rolled Products GmbHInventors: Werner Kehl, Dietmar Schroder, Henk-Jan Brinkman, Natalie Horster, Kai-Friedrich Karhausen, Eike Brunger, Thomas Wirtz
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Publication number: 20140190595Abstract: The invention relates to a method for producing a strip made of an AlMgSi alloy, in which a rolling ingot made of an AlMgSi alloy is cast, the rolling ingot is subjected to homogenization, the rolling ingot having been brought to rolling temperature is hot-rolled and is optionally cold-rolled to the final thickness thereafter. The problem of providing an improved method for producing aluminum strip made of an AlMgSi alloy, with which AlMgSi strips having very good shaping behaviour can be produced reliably, is solved in that immediately after exit from the final rolling pass, the hot strip has a temperature of between more than 130° C., preferably 135° C., and at most 250° C., preferably at most 230° C., and the hot strip is wound up at this temperature.Type: ApplicationFiled: March 12, 2014Publication date: July 10, 2014Applicant: Hydro Aluminum Rolled Products GmbHInventors: Werner Kehl, Dietmar Schröder, Henk-Jan Brinkman, Natalie Hörster, Kai-Friedrich Karhausen, Eike Brünger, Thomas Wirtz
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Publication number: 20120222783Abstract: The invention relates to a method for producing a strip made of an AlMgSi alloy in which a rolling ingot is cast of an AlMgSi alloy, the rolling ingot is subjected to homogenization, the rolling ingot which has been brought to rolling temperature is hot-rolled, and then is optionally cold-rolled to the final thickness thereof. The problem of providing a method for producing an aluminum strip made of an AlMgSi alloy and an aluminum strip, which has a higher breaking elongation with constant strength and therefore enables higher degrees of deformation in producing structured metal sheets, is solved in that the hot strip has a temperature of no more than 130° C. directly at the exit of the last rolling pass, preferably a temperature of no more than 100° C., and the hot strip is coiled at that or a lower temperature.Type: ApplicationFiled: December 29, 2011Publication date: September 6, 2012Applicant: HYDRO ALUMINIUM DEUTSCHLAND GMBHInventors: Henk-Jan Brinkman, Thomas Wirtz, Dietmar Schröder, Eike Brünger, Kai-Friedrich Karhausen
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Patent number: 7488406Abstract: Detail is apparatus for collecting particles from a liquid, including a first electrode having an upper surface defining one or more substantially circular areas of a predetermined diameter separated from a counter electrode, having an uppersurface bounding at least in part the circular area or areas of the first electrode, by a predetermined gap and equipment for applying an alternating potential difference of a predetermined magnitude at a predetermined frequency lower than the charge relaxation frequency of the liquid across the electrodes whereby particles from the liquid are focused onto the circular area or areas of the first elect through an induced electro-osmotic flow in the liquid.Type: GrantFiled: February 12, 2004Date of Patent: February 10, 2009Assignee: The Secretary of State for DefenceInventors: Michael Pycraft Hughes, Kai Friedrich Hoettges