Patents by Inventor Hans-Achim Kuhn
Hans-Achim Kuhn 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: 20230357894Abstract: A wrought alloy for a bearing material for use as valve guide or in turbochargers of internal-combustion engines operated with ethanol-containing fuels The composition of the wrought alloy is as follows in wt%: Zn: 25.0 - 34.0%; Fe: 0.8 - 1.2%; Sn: 0.8 - 1.2%; Al: 1.3 -1.7%; Si: 0.2 - 0.45%; and Pb: up to 0.1%, with the balance being copper and unavoidable impurities The sum total of all elements not belonging to the group of the elements copper, zinc, iron, tin, aluminum and silicon is at most 0.3 wt%. The alloy has a microstructure including precipitates in the form of silicides with a fraction of 0.5 to 2.0 vol%.Type: ApplicationFiled: April 25, 2023Publication date: November 9, 2023Inventors: Hans-Achim KUHN, Susanne MÜLLER, Volker VOGGESER
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Patent number: 11142810Abstract: The invention relates to a sliding element consisting of a copper-zinc alloy containing the following components (in % by weight): 60.0 to 64.0% Cu, 0.2 to 0.5% Si, 0.6 to 1.2% Fe, optionally also up to a maximum 1.5% Sn, optionally also up to a maximum 0.25% Pb, optionally also up to a maximum 0.08% P, the remainder being Zn and unavoidable impurities. The copper-zinc alloy has a grain structure consisting of an ?- and ?-phase with a volume content of the ?-Phase of at least 90%, and iron silicides are embedded in the grain structure.Type: GrantFiled: February 3, 2017Date of Patent: October 12, 2021Assignee: WIELAND-WERKE AGInventors: Hans-Achim Kuhn, Susanne Böhme, Tobias Neubrand, Gerhard Thumm, Volker Voggeser
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Publication number: 20200283872Abstract: The invention relates to a sliding element consisting of a copper-zinc alloy containing the following components (in % by weight): 60.0 to 64.0% Cu, 0.2 to 0.5% Si, 0.6 to 1.2% Fe, optionally also up to a maximum 1.5% Sn, optionally also up to a maximum 0.25% Pb, optionally also up to a maximum 0.08% P, the remainder being Zn and unavoidable impurities. The copper-zinc alloy has a grain structure consisting of an ?- and ?-phase with a volume content of the ?-Phase of at least 90%, and iron silicides are embedded in the grain structure.Type: ApplicationFiled: February 3, 2017Publication date: September 10, 2020Inventors: Hans-Achim KUHN, Susanne BÖHME, Tobias NEUBRAND, Gerhard THUMM, Volker VOGGESER
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Patent number: 10480049Abstract: A copper alloy having the following composition (in % by weight): from 10.6 to 18% of Al, from 10.5 to 14.5% of Ni, optionally up to 2% of Fe, optionally up to 1% of Co, optionally up to 0.5% of Ti, optionally up to 0.5% of Mn, optionally up to 0.15% of B, optionally up to 0.1% of Ca, and optionally up to 0.1% of C, with the balance being copper and unavoidable impurities. Nickel aluminides of the NiAl type are embedded as precipitates in the microstructure of the alloy.Type: GrantFiled: March 31, 2017Date of Patent: November 19, 2019Assignee: WIELAND-WERKE AGInventors: Igor Altenberger, Hans-Achim Kuhn
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Patent number: 10364482Abstract: A copper-zinc alloy having the following composition (in % by weight): from 67.0 to 69.0% of Cu, from 0.4 to 0.6% of Si, from 1.2 to 1.6% of Mn, from 0.03 to 0.06% of P, optionally up to a maximum of 0.5% of Al, optionally up to a maximum of 0.15% of Ni, optionally up to a maximum of 0.1% of Fe, optionally up to a maximum of 0.1% of Pb, optionally up to a maximum of 0.08% of Sn, optionally up to a maximum of 0.1% of S, balance Zn and unavoidable impurities. The alloy has a microstructure which consists of an ?-phase matrix in which inclusions of manganese silicides having a globular shape are present in a proportion of at least 2% by volume and not more than 5% by volume.Type: GrantFiled: March 4, 2016Date of Patent: July 30, 2019Assignee: WIELAND-WERKE AGInventors: Hans-Achim Kuhn, Gerhard Thumm, Maher Ababneh, Volker Voggeser, Jeremy Bell
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Publication number: 20180245184Abstract: The invention relates to a sliding element composed of a copper alloy which contains the following constituents (in % by weight): from 2.0 to 3.0% of Ni, from 0.45 to 1.0% of Si, up to 1.5% of Ti and/or Cr, where the sum of the Ni content [Ni] and the Ti content [Ti]: [Ni]+[Ti] is ?0.2%, optionally from 0.05 to 1.5% of Co, optionally in each case from 0.05 to 0.1% of Mg, Al, Fe, optionally from 0.01 to 0.1% of Pb, optionally from 0.002 to 0.01% of P, a balance of Cu and unavoidable impurities, wherein the ratio of the sum of the Ni content [Ni], Ti content [Ti] and Cr content [Cr] to the Si content [Si] is such that: 4.3?([Ni]+[Ti]+[Cr])/[Si]?6.5.Type: ApplicationFiled: January 19, 2018Publication date: August 30, 2018Inventors: Hans-Achim KUHN, Joerg SEEGER
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Publication number: 20170349974Abstract: The invention relates to a copper alloy having the following composition (in % by weight): from 10.6 to 18% of Al, from 10.5 to 14.5% of Ni, optionally up to 2% of Fe, optionally up to 1% of Co, optionally up to 0.5% of Ti, optionally up to 0.5% of Mn, optionally up to 0.15% of B, optionally up to 0.1% of Ca, optionally up to 0.1% of C, a balance copper and unavoidable impurities. Nickel aluminides of the NiAl type are embedded as precipitates in the microstructure of the alloy. The invention further relates to a number of uses of this copper alloy.Type: ApplicationFiled: March 31, 2017Publication date: December 7, 2017Inventors: Igor ALTENBERGER, Hans-Achim KUHN
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Patent number: 9738961Abstract: The invention includes a copper-nickel-zinc alloy with the following composition in weight %: Cu 47.0 to 49.0%, Ni 8.0 to 10.0%, Mn 0.2 to 0.6%, Si 0.05 to 0.4%, Pb 1.0 to 1.5%, Fe and/or Co up to 0.8%, the rest being Zn and unavoidable impurities, wherein the total of the Fe content and double the Co content is at least 0.1 weight % and wherein mixing silicides containing nickel, iron and manganese and/or containing nickel, cobalt and manganese are stored as spherical or ellipsoidal particles in a structure consisting of an ?- and ?-phase. The invention further relates to a method for producing semi-finished products from a copper-nickel-zinc alloy.Type: GrantFiled: September 28, 2016Date of Patent: August 22, 2017Assignee: WIELAND-WERKE AGInventors: Hans-Achim Kuhn, Rudolf Liebsch
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Patent number: 9617629Abstract: The invention includes a copper-nickel-zinc alloy with the following composition in weight %: Cu 47.0 to 49.0%, Ni 8.0 to 10.0%, Mn 0.2 to 0.6%, Si 0.05 to 0.4%, Pb 1.0 to 1.5%, Fe and/or Co up to 0.8%, the rest being Zn and unavoidable impurities, wherein the total of the Fe content and double the Co content is at least 0.1 weight % and wherein mixing silicides containing nickel, iron and manganese and/or containing nickel, cobalt and manganese are stored as spherical or ellipsoidal particles in a structure consisting of an ?- and ?-phase. The invention further relates to a method for producing semi-finished products from a copper-nickel-zinc alloy.Type: GrantFiled: February 8, 2013Date of Patent: April 11, 2017Assignee: WIELAND-WERKE AGInventors: Hans-Achim Kuhn, Rudolf Liebsch
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Publication number: 20170016097Abstract: The invention includes a copper-nickel-zinc alloy with the following composition in weight %: Cu 47.0 to 49.0%, Ni 8.0 to 10.0%, Mn 0.2 to 0.6%, Si 0.05 to 0.4%, Pb 1.0 to 1.5%, Fe and/or Co up to 0.8%, the rest being Zn and unavoidable impurities, wherein the total of the Fe content and double the Co content is at least 0.1 weight % and wherein mixing silicides containing nickel, iron and manganese and/or containing nickel, cobalt and manganese are stored as spherical or ellipsoidal particles in a structure consisting of an ?- and ?-phase. The invention further relates to a method for producing semi-finished products from a copper-nickel-zinc alloy.Type: ApplicationFiled: September 28, 2016Publication date: January 19, 2017Inventors: Hans-Achim KUHN, Rudolf LIEBSCH
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Patent number: 9493858Abstract: A copper alloy subjected to a thermo-mechanical treatment and composed of (in wt %) 15.5 to 36.0% Zn, 0.3 to 3.0% Sn, 0.1 to 1.5% Fe, optionally 0.001 to 0.4% P, optionally 0.01 to 0.1% Al, optionally 0.01 to 0.03% Ag, Mg, Zr, In, Co, Cr, Ti, Mn, optionally 0.05 to 0.5% Ni, the remainder being copper and unavoidable contaminants, wherein the microstructure of the alloy is characterized in that the proportions of the main texture orientations are at least 10 vl % copper orientation, at least 10 vl % S/R orientation, at least 5 vl % brass orientation, at least 2 vl % Goss orientation, at least 2 vl % 22RD-cube orientation, at least 0.5 vl % cube orientation, and finely distributed iron-containing particles are contained in the alloy matrix.Type: GrantFiled: June 15, 2012Date of Patent: November 15, 2016Assignee: WIELAND-WERKE AGInventors: Hans-Achim Kuhn, Andrea Kaeufler, Stefan Gross
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Publication number: 20160289797Abstract: A copper-zinc alloy having the following composition (in % by weight): from 67.0 to 69.0% of Cu, from 0.4 to 0.6% of Si, from 1.2 to 1.6% of Mn, from 0.03 to 0.06% of P, optionally up to a maximum of 0.5% of Al, optionally up to a maximum of 0.15% of Ni, optionally up to a maximum of 0.1% of Fe, optionally up to a maximum of 0.1% of Pb, optionally up to a maximum of 0.08% of Sn, optionally up to a maximum of 0.1% of S, balance Zn and unavoidable impurities. The alloy has a microstructure which consists of an ?-phase matrix in which inclusions of manganese silicides having a globular shape are present in a proportion of at least 2% by volume and not more than 5% by volume.Type: ApplicationFiled: March 4, 2016Publication date: October 6, 2016Inventors: Hans-Achim KUHN, Gerhard THUMM, Maher ABABNEH, Volker VOGGESER, Jeremy BELL
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Publication number: 20150041028Abstract: The invention includes a copper-nickel-zinc alloy with the following composition in weight %: Cu 47.0 to 49.0%, Ni 8.0 to 10.0%, Mn 0.2 to 0.6%, Si 0.05 to 0.4%, Pb 1.0 to 1.5%, Fe and/or Co up to 0.8%, the rest being Zn and unavoidable impurities, wherein the total of the Fe content and double the Co content is at least 0.1 weight % and wherein mixing silicides containing nickel, iron and manganese and/or containing nickel, cobalt and manganese are stored as spherical or ellipsoidal particles in a structure consisting of an ?- and ?-phase. The invention further relates to a method for producing semi-finished products from a copper-nickel-zinc alloy.Type: ApplicationFiled: February 8, 2013Publication date: February 12, 2015Inventors: Hans-Achim Kuhn, Rudolf Liebsch
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Publication number: 20140377127Abstract: The invention relates to a copper alloy that has been subjected to a thermo-mechanical treatment, composed of (in wt %) 15.5 to 36.0% Zn, 0.3 to 3.0% Sn, 0.1 to 1.5% Fe, optionally also 0.001 to 0.4% P, optionally also 0.01 to 0.1% Al, optionally also 0.01 to 0.03% Ag, Mg, Zr, In, Co, Cr, Ti, Mn, optionally also 0.05 to 0.5% Ni, the remainder copper and unavoidable contaminants, wherein the microstructure of the alloy is characterized in that the proportions of the main texture layers are at least 10 vl % copper layer, at least 10 vl % S/R layer, at least 5 vl % brass layer, at least 2 vl % Goss layer, at least 2 vl % 22RD-cube layer, at least 0.5 vl % cube layer, and finely distributed iron-containing particles are contained in the alloy matrix.Type: ApplicationFiled: June 15, 2012Publication date: December 25, 2014Inventors: Hans-Achim Kuhn, Andrea Kaeufler, Stefan Gross
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Publication number: 20140161661Abstract: The invention relates to a copper alloy that has been subjected to a thermo-mechanical treatment, composed of (in wt %) 15.5 to 36.0% Zn, 0.3 to 3.0% Sn, 0.1 to 1.5% Fe, optionally also 0.001 to 0.4% P, optionally also 0.01 to 0.1% Al, optionally also 0.01 to 0.03% Ag, Mg, Zr, In, Co, Cr, Ti, Mn, optionally also 0.05 to 0.5% Ni, the remainder copper and unavoidable contaminants, wherein the microstructure of the alloy is characterized in that the proportions of the main texture layers are at least 10 vl % copper layer, at least 10 vl % S/R layer, at least 5 vl % brass layer, at least 2 vl % Goss layer, at least 2 vl % 22RD-cube layer, at least 0.5 vl % cube layer, and finely distributed iron-containing particles are contained in the alloy matrix.Type: ApplicationFiled: June 15, 2012Publication date: June 12, 2014Inventors: Hans-Achim Kuhn, Andrea Kaeufler, Stefan Gross
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Publication number: 20140014239Abstract: A process for manufacturing copper-nickel-silicon alloys includes the sequential steps of casting the copper alloy; hot working the cast copper-base alloy to effect a first reduction in cross-sectional area; solutionizing the cast copper-base alloy at a temperature and for a time effective to substantially form a single phase alloy; first age annealing the alloy at a temperature and for a time effective to precipitate an amount of a second phase effective to form a multi-phase alloy having silicides; cold working the multi-phase alloy to effect a second reduction in cross-sectional area; and second age annealing the multiphase alloy at a temperature and for a time effective to precipitate additional silicides thereby raising conductivity, wherein the second age annealing temperature is less than the first age annealing temperature.Type: ApplicationFiled: April 17, 2013Publication date: January 16, 2014Applicants: Wieland-Werke AG, GBC Metals, LLCInventors: Frank N. Mandigo, Peter W. Robinson, Derek E. Tyler, Andreas Boegel, Hans-Achim Kuhn, Frank M. Keppeler, Joerg Seeger
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Patent number: 8430979Abstract: A copper alloy having an improved combination of yield strength and electrical conductivity contains, by weight, from 1% to 2.5% of nickel, from 0.5% to 2.0% of cobalt, with a total nickel plus cobalt content of from 1.7% to 4.3%, from 0.5% to 1.5% of silicon with a ratio of (Ni+Co)/Si of between 3.5 and 6, and the balance copper and inevitable impurities wherein the wrought copper alloy has an electrical conductivity in excess of 40% IACS. A further increase in the combination of yield strength and electrical conductivity as well as enhanced resistance to stress relaxation is obtained by a further inclusion of up to 1% of silver.Type: GrantFiled: October 26, 2006Date of Patent: April 30, 2013Assignee: GBC Metals, LLCInventors: Frank N. Mandigo, Peter W. Robinson, Derek E. Tyler, Andreas Boegel, Hans-Achim Kuhn, Frank M. Keppeler, Joerg Seeger
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Patent number: 8257515Abstract: A copper alloy having an improved combination of yield strength and electrical conductivity consists essentially of, by weight, from 1% to 2.5% of nickel, from 0.5% to 2.0% of cobalt, with a total nickel plus cobalt content of from 1.7% to 4.3%, from 0.5% to 1.5% of silicon with a ratio of (Ni+Co)/Si of between 3.5 and 6, and the balance copper and inevitable impurities wherein the wrought copper alloy has an electrical conductivity in excess of 40% IACS. A further increase in the combination of yield strength and electrical conductivity as well as enhanced resistance to stress relaxation is obtained by a further inclusion of up 1% of silver. A process to manufacture the alloys of the invention as well as other copper-nickel-silicon alloys includes the sequential steps of (a). casting the copper alloy; (b). hot working the cast copper-base alloy to effect a first reduction in cross-sectional area; (c).Type: GrantFiled: October 7, 2005Date of Patent: September 4, 2012Assignees: GBC Metals, LLC, Wieland-Werke, AGInventors: Frank N. Mandigo, Peter W. Robinson, Derek E. Tyler, Andreas Boegel, Hans-Achim Kuhn, Frank M. Keppeler, Joerg Seeger
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Patent number: 7790295Abstract: The invention relates to a material composite in strip form, process for producing said composite and use of the material composite as a sliding element. The material composite comprising a layer consisting of a copper multicomponent alloy which is permanently joined to a steel supporting layer, where the copper multicomponent alloy is composed of [in % by weight]: Ni 1.0 to 15.0%, Sn 2.0 to 12.0%, remainder Cu and inevitable impurities, optionally up to 5% manganese, optionally up to 3% silicon, optionally individually or in combination up to 1.5% Ti, Co, Cr, Al, Fe, Zn, Sb, optionally individually or in combination up to 0.5% B, Zr, P, S, optionally up to 25% Pb.Type: GrantFiled: March 15, 2007Date of Patent: September 7, 2010Assignee: Wieland-Werke AGInventors: Maher Ababneh, Hans-Achim Kuhn, Volker Voggeser
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Publication number: 20090317290Abstract: The invention relates to a multicomponent copper alloy comprising [in % by weight]: Ni from 1.0 to 15.0%, Sn from 2.0 to 12.0%, Mn from 0.1 to 5.0%, Si from 0.1 to 3.0%, balance Cu and unavoidable impurities, if desired up to 0.5% of P, if desired individually or in combination up to 1.5% of Ti, Co, Cr, Al, Fe, Zn, Sb, if desired individually or in combination up to 0.5% of B, Zr, S, if desired up to 5% of Pb, and having Mn—Ni silicide phases which have a mass ratio of the elements [w(Mn)+w(Ni)]/w(Si) in the range from 1.8/1 to 7/1.Type: ApplicationFiled: April 26, 2007Publication date: December 24, 2009Inventors: Maher Ababneh, Hans-Achim Kuhn, Volker Voggeser