Patents by Inventor Achim Burger
Achim Burger 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: 20210269906Abstract: The invention relates to a method of manufacturing an Al—Mg—Mn aluminium alloy plate product having a final gauge in the range of 3 mm or more, the method com-prising the steps of: (a) providing a rolling feedstock material of an aluminium alloy having a composition comprising of Mg 3.5-5.3% and Mn 0.20-1.2%;(b) preheating and/or homogenisation; (c) hot rolling of the rolling feedstock to a rolled final gauge; (d) a first cold working operation selected from the group consisting of (i) stretching Ma range of 3% to 20%, and (ii) cold rolling with a cold rolling reduction in a range of 5% to 25%; (e) annealing of the cold worked plate at a temperature in a range of 200° C. to 280° C.; (f) a second cold working operation selected from the group con-sisting of (i) stretching in a range of 0.4% to 3%, and (ii) cold rolling with a cold rolling reduction in a range of 0.5% to 5%.Type: ApplicationFiled: June 3, 2019Publication date: September 2, 2021Applicant: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Nele Mareike KNAACK, Bernd JACOBY, Achim BÜRGER, Otmar Martin MÜLLER
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Publication number: 20210246523Abstract: The invention relates to a method of manufacturing an 7xxx-series aluminium alloy plate product having improved fatigue failure resistance, the method comprising the steps of (a) casting an ingot made of an aluminium alloy of the 7xxx-series comprising (in wt. %): Zn 5 to 9, Mg 1 to 3, Cu 0 to 3, balance aluminium and incidental elements and impurities; (b) homogenizing and/or preheating the cast ingot; (c) hot rolling the ingot into a plate product by rolling the ingot with multiple rolling passes, characterized in that when the intermediate thickness of the plate is between 80 and 220 mm, at least a high reduction hot rolling pass is carried out with a thickness reduction of at least 25%, wherein the plate product has a final thickness of less than 75 mm. The invention is also related to an aluminium alloy plate product and an aerospace structural member produced by this method.Type: ApplicationFiled: June 5, 2019Publication date: August 12, 2021Applicant: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Sabine Maria SPANGEL, Philippe MEYER, Achim BÜRGER, Matthias RÜBNER, Simon LACHNITT
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Publication number: 20200377985Abstract: A method of manufacturing a rolled wear-resistant aluminium alloy product including the steps of: (a) providing a rolling feedstock material of an aluminium alloy having Mg 4.20% to 5.5%, Mn 0.50% to 1.1%, Fe up to 0.40%, Si up to 0.30%, Cu up to 0.20%, Cr up to 0.25%, Zr up to 0.25%, Zn up to 0.30%, Ti up to 0.25%, unavoidable impurities and balance aluminium; (b) heating the rolling feedstock; (c) hot-rolling of the feedstock to an intermediate gauge in a range of 15 mm to 40 mm; (d) hot-rolling of the feedstock from intermediate gauge to a final gauge in a range of 3 mm to 15 mm and wherein the hot-mill exit temperature is in a range of 130-285° C.; (e) cooling of the hot-rolled feedstock to ambient temperature.Type: ApplicationFiled: November 13, 2017Publication date: December 3, 2020Applicant: Aleris Rolled Products Germany GmbHInventors: Andreas Harald BACH, Bernd JACOBY, Achim BÜRGER
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Patent number: 10335841Abstract: The invention relates to a method of forming an AlMg alloy armor plate product, and comprising the steps of: (i) providing a plate product having a gauge of at least 10 mm and a chemical composition, in wt. %: Mg 2.5% to 6%, Mn 0 to 1.2%, Sc 0 to 1%, Ag 0 to 0.5%, Zn 0 to 2%, Cu 0 to 2%, Li 0 to 3%, optionally at least one or more elements selected from the group consisting of (Zr 0.03% to 0.4%, Cr 0.03% to 0.4%, and Ti 0.005% to 0.3%), Fe 0 to 0.4%, Si 0 to 0.25%, inevitable impurities and balance aluminum, and (ii) shaping said alloy plate at a temperature in a range of 200° C. to 400° C. to obtain a predetermined two- or three-dimensional formed structure.Type: GrantFiled: January 21, 2014Date of Patent: July 2, 2019Assignee: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Philippe Meyer, Achim Bürger
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Patent number: 9890448Abstract: This relates to an aluminum alloy product, in particular an age-hardenable Al—Zn—Mg type alloy product for structural members, the alloy product combining a high strength with high toughness and reduced quench sensitivity, and having a chemical composition including, in wt. %: Zn about 3 to 11%, Mg about 1 to 3%, Cu about 0.9 to 3%, Ge about 0.03 to 0.4%, Si max. 0.5%, Fe max. 0.5%, balance aluminum and normal and/or inevitable elements and impurities. Furthermore, this relates to a method of producing such aluminum alloy products.Type: GrantFiled: November 19, 2014Date of Patent: February 13, 2018Assignee: ALERIS ALUMINUM KOBLENZ GMBHInventors: Shangping Chen, Linzhong Zhuang, Sunil Khosla, Hugo Van Schoonevelt, Andrew Norman, Achim Burger
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Patent number: 9486881Abstract: An aluminum alloy sheet product or extruded product for fluxless brazing, including an aluminum alloy core having on at least one face an aluminum filler clad layer containing 4% to 15% of Si, the filler clad layer having an inner-surface and an outer-surface, the inner-surface is facing the aluminum alloy core and the outer-surface is facing a coating layer of 2 to 45 mg/sq·m of Bi or of a Bi-based alloy. Furthermore, a method of brazing a brazed assembly incorporating at least one member made from the brazing sheet material.Type: GrantFiled: November 9, 2012Date of Patent: November 8, 2016Assignee: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Adrianus Jacobus Wittebrood, Steven Kirkham, Achim Bürger, Klaus Vieregge
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Patent number: 9377249Abstract: A fin stock material from an 3xxx-series aluminum alloy and including at least 0.5% to 2.0% Mn, and furthermore a purposive addition of one or more wetting elements selected from the group of: Bi 0.03% to 0.5%, Pb 0.03% to 0.5%, Sb 0.03% to 0.5%, Li 0.03% to 0.5%, Se 0.03% to 0.5%, Y 0.03% to 0.05%, Th 0.03% to 0.05%, and the sum of these elements being 0.5% or less, with the remainder including aluminum and tolerable impurities. Also provided is a method for manufacturing a heat exchanger assembly incorporating such a fin stock material.Type: GrantFiled: June 8, 2015Date of Patent: June 28, 2016Assignee: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Adrianus Jacobus Wittebrood, Steven Kirkham, Achim Burger, Klaus Vieregge
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Patent number: 9216467Abstract: An aluminum alloy extruded tube product for a heat exchanger assembly and made from an 1xxx-series aluminum alloys and including furthermore a purposive addition of one or more wetting elements selected from the group of: Bi 0.03% to 0.5%, Pb 0.03% to 0.5%, Sb 0.03% to 0.5%, Li 0.03% to 0.5%, Se 0.03% to 0.5%, Y 0.03% to 0.05%, Th 0.03% to 0.05%, and the sum of these elements being 0.5% or less.Type: GrantFiled: April 3, 2012Date of Patent: December 22, 2015Assignee: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Adrianus Jacobus Wittebrood, Steven Kirkham, Achim Bürger, Klaus Vieregge
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Publication number: 20150360269Abstract: The invention relates to a method of forming an AlMg alloy armour plate product, and comprising the steps of: (i) providing a plate product having a gauge of at least 10 mm and a chemical composition, in wt. %: Mg 2.5% to 6%, Mn 0 to 1.2%, Sc 0 to 1%, Ag 0 to 0.5%, Zn 0 to 2%, Cu 0 to 2%, Li 0 to 3%, optionally at least one or more elements selected from the group consisting of (Zr 0.03% to 0.4%, Cr 0.03% to 0.4%, and Ti 0.005% to 0.3%), Fe 0 to 0.4%, Si 0 to 0.25%, inevitable impurities and balance aluminium, and (ii) shaping said alloy plate at a temperature in a range of 200° C. to 400° C. to obtain a predetermined two- or three-dimensional formed structure.Type: ApplicationFiled: January 21, 2014Publication date: December 17, 2015Inventors: Philippe MEYER, Achim BÜRGER
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Patent number: 9180537Abstract: An aluminum alloy extruded tube product for a heat exchanger assembly and made from a 3xxx-series aluminum alloys and including furthermore a purposive addition of one or more wetting elements selected from the group of: Bi 0.03% to 0.5%, Pb 0.03% to 0.5%, Sb 0.03% to 0.5%, Li 0.03% to 0.5%, Se 0.03% to 0.5%, Y 0.03% to 0.05%, Th 0.03% to 0.05%, and the sum of these elements being 0.5% or less.Type: GrantFiled: April 3, 2012Date of Patent: November 10, 2015Assignee: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Adrianus Jacobus Wittebrood, Steven Kirkham, Achim Bürger, Klaus Vieregge
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Publication number: 20150284825Abstract: An aluminum alloy wrought product including, in wt. %, Mg 3.0 to 7.0, Zn 0.6 to 2.8, Mn 0 to 1.0, Cu 0 to 2.0, Sc 0 to 0.6, at least one element selected from the group of Zr 0.04 to 0.4, Cr 0.04 to 0.4, Hf 0.04 to 0.4 and Ti 0.01 to 0.3; Fe maximum 0.3, Si maximum 0.3, inevitable impurities, and balance aluminum. The range for the Zn-content in wt. % is a function of the Mg-content according to: lower-limit of the Zn-range: [Zn]=0.34[Mg]?0.4, and upper-limit of the Zn-range: [Zn]=0.34[Mg]+0.4.Type: ApplicationFiled: April 10, 2015Publication date: October 8, 2015Inventors: Andrew NORMAN, Alastair WISE, Achim BURGER, Sabine SPANGEL
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Publication number: 20150267969Abstract: A fin stock material from an 3xxx-series aluminium alloy and including at least 0.5% to 2.0% Mn, and furthermore a purposive addition of one or more wetting elements selected from the group of: Bi 0.03% to 0.5%, Pb 0.03% to 0.5%, Sb 0.03% to 0.5%, Li 0.03% to 0.5%, Se 0.03% to 0.5%, Y 0.03% to 0.05%, Th 0.03% to 0.05%, and the sum of these elements being 0.5% or less, with the remainder including aluminium and tolerable impurities. Also provided is a method for manufacturing a heat exchanger assembly incorporating such a fin stock material.Type: ApplicationFiled: June 8, 2015Publication date: September 24, 2015Inventors: Adrianus Jacobus WITTEBROOD, Steven KIRKHAM, Achim BURGER, Klaus VIEREGGE
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Patent number: 9039848Abstract: An aluminum alloy wrought product including, in wt. %, Mg 3.0 to 7.0, Zn 0.6 to 2.8, Mn 0 to 1.0, Cu 0 to 2.0, Sc 0 to 0.6, at least one element selected from the group of Zr 0.04 to 0.4, Cr 0.04 to 0.4, Hf 0.04 to 0.4 and Ti 0.01 to 0.3; Fe maximum 0.3, Si maximum 0.3, inevitable impurities, and balance aluminum. The range for the Zn-content in wt. % is a function of the Mg-content according to: lower-limit of the Zn-range: [Zn]=0.34[Mg]?0.4, and upper-limit of the Zn-range: [Zn]=0.34[Mg]+0.4.Type: GrantFiled: November 5, 2008Date of Patent: May 26, 2015Assignee: ALERIS ALUMINUM KOBLENZ GMBHInventors: Andrew Norman, Alastair Wise, Achim Burger, Sabine Spangel
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Publication number: 20150068649Abstract: This relates to an aluminum alloy product, in particular an age-hardenable Al—Zn—Mg type alloy product for structural members, the alloy product combining a high strength with high toughness and reduced quench sensitivity, and having a chemical composition including, in wt. %: Zn about 3 to 11%, Mg about 1 to 3%, Cu about 0.9 to 3%, Ge about 0.03 to 0.4%, Si max. 0.5%, Fe max. 0.5%, balance aluminum and normal and/or inevitable elements and impurities. Furthermore, this relates to a method of producing such aluminum alloy products.Type: ApplicationFiled: November 19, 2014Publication date: March 12, 2015Inventors: Shangping CHEN, Linzhong ZHUANG, Sunil KHOSLA, Hugo VAN SCHOONEVELT, Andrew NORMAN, Achim BURGER
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Publication number: 20140246483Abstract: An aluminium alloy sheet product or extruded product for fluxless brazing, including an aluminium alloy core having on at least one face an aluminium filler clad layer containing 4% to 15% of Si, the filler clad layer having an inner-surface and an outer-surface, the inner-surface is facing the aluminium alloy core and the outer-surface is facing a coating layer of 2 to 45 mg/sq.m of Bi or of a Bi-based alloy. Furthermore, a method of brazing a brazed assembly incorporating at least one member made from the brazing sheet material.Type: ApplicationFiled: November 9, 2012Publication date: September 4, 2014Applicant: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Adrianus Jacobus Wittebrood, Steven Kirkham, Achim Bürger, Klaus Vieregge
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Publication number: 20140061286Abstract: An aluminium alloy extruded tube product for a heat exchanger assembly and made from a 3xxx-series aluminium alloys and including furthermore a purposive addition of one or more wetting elements selected from the group of: Bi 0.03% to 0.5%, Pb 0.03% to 0.5%, Sb 0.03% to 0.5%, Li 0.03% to 0.5%, Se 0.03% to 0.5%, Y 0.03% to 0.05%, Th 0.03% to 0.05%, and the sum of these elements being 0.5% or less.Type: ApplicationFiled: April 3, 2012Publication date: March 6, 2014Applicant: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Adrianus Jacobus Wittenbrood, Steven Kirkham, Achim Bürger, Klaus Vieregge
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Publication number: 20140054019Abstract: An aluminium alloy extruded tube product for a heat exchanger assembly and made from an 1xxx-series aluminium alloys and including furthermore a purposive addition of one or more wetting elements selected from the group of: Bi 0.03% to 0.5%, Pb 0.03% to 0.5%, Sb 0.03% to 0.5%, Li 0.03% to 0.5%, Se 0.03% to 0.5%, Y 0.03% to 0.05%, Th 0.03% to 0.05%, and the sum of these elements being 0.5% or less.Type: ApplicationFiled: April 3, 2012Publication date: February 27, 2014Applicant: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Adrianus Jacobus Wittebrood, Steven Kirkham, Achim Bürger, Klaus Vieregge
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Publication number: 20140034713Abstract: A fin stock material from an 3xxx-series aluminium alloy and including at least 0.5% to 2.0% Mn, and furthermore a purposive addition of one or more wetting elements selected from the group of: Bi 0.03% to 0.5%, Pb 0.03% to 0.5%, Sb 0.03% to 0.5%, Li 0.03% to 0.5%, Se 0.03% to 0.5%, Y 0.03% to 0.05%, Th 0.03% to 0.05%, and the sum of these elements being 0.5% or less, with the remainder including aluminium and tolerable impurities. Also provided is a method for manufacturing a heat exchanger assembly incorporating such a fin stock material.Type: ApplicationFiled: March 13, 2012Publication date: February 6, 2014Applicant: ALERIS ROLLED PRODUCTS GERMANY GMBHInventors: Adrianus Jacobus Wittebrood, Steven Kirkham, Achim Burger, Klaus Vieregge
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Patent number: 8455110Abstract: A brazing sheet material for CAB brazing without applying flux. The brazing sheet material including an aluminum core alloy layer provided with a first brazing clad layer material on one or both sides of the aluminum core layer and at least one second brazing clad layer material positioned between the aluminum core alloy layer and the first braze clad layer material. The second brazing clad layer material is an Al—Si alloy brazing material having 5% to 20% Si and 0.01% to 3% Mg, and the first brazing clad layer material is an Al—Si alloy brazing material having 2% to 14% Si and less than 0.4% Mg. Also disclosed is a brazed assembly manufactured in a brazing operation.Type: GrantFiled: June 25, 2009Date of Patent: June 4, 2013Assignee: Aleris Aluminum Koblenz GmbHInventors: Adrianus Jacobus Wittebrood, Theobald De Haan, Achim Bürger
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Patent number: 8312916Abstract: Method and apparatus employing a casting mould including a liquid feed end for supplying the casting mould with molten second alloy and an exit end with an outlet for casting molten second alloy downwardly. While continuously moving the mould and an elongated solid first alloy substrate relative to one another, casting molten second alloy passes downwardly through at least one outlet of the mould onto an upper surface of the substrate at a temperature wherein the substrate locally at least partly remelts beginning at a reference point of a remelting zone and mixes at least partly with molten second alloy to form an alloy pool. After remelting the molten alloy pool continuously cools and solidifies at a location away from the reference point and joins the substrate to form composite ingot including at least two separately formed layers of one or more alloys before discharging from the mould.Type: GrantFiled: June 3, 2009Date of Patent: November 20, 2012Assignee: Aleris Aluminum Koblenz GmbHInventors: Joost Christiaan Storm, Andreas Ten Cate, Ingo Günther Kröpfl, Achim Bürger