Patents by Inventor Stephen F. Baumann
Stephen F. Baumann 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: 11673213Abstract: An aluminum alloy brazing sheet has a 3XXX, 1XXX or 6XXX core, an interliner and a 4XXX brazing layer without added Mg. The interliner has Bi and Mg, the magnesium migrating to the surface of the brazing sheet during brazing and reducing the aluminum oxide to facilitate brazing without flux in a controlled inert atmosphere with reduced oxygen.Type: GrantFiled: September 30, 2022Date of Patent: June 13, 2023Assignee: ARCONIC TECHNOLOGIES LLCInventors: Stephen F. Baumann, Michael P. Danz, Ning Sun
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Publication number: 20230035052Abstract: An aluminum alloy brazing sheet has a 3XXX, 1XXX or 6XXX core, an interliner and a 4XXX brazing layer without added Mg. The interliner has Bi and Mg, the magnesium migrating to the surface of the brazing sheet during brazing and reducing the aluminum oxide to facilitate brazing without flux in a controlled inert atmosphere with reduced oxygen.Type: ApplicationFiled: September 30, 2022Publication date: February 2, 2023Inventors: Stephen F. Baumann, Michael P. Danz, Ning Sun
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Patent number: 11491585Abstract: An aluminum alloy brazing sheet has a 3XXX, 1XXX or 6XXX core, an interliner and a 4XXX brazing layer without added Mg. The interliner has Bi and Mg, the magnesium migrating to the surface of the brazing sheet during brazing and reducing the aluminum oxide to facilitate brazing without flux in a controlled inert atmosphere with reduced oxygen.Type: GrantFiled: January 24, 2018Date of Patent: November 8, 2022Assignee: ARCONIC TECHNOLOGIES LLCInventors: Stephen F. Baumann, Michael P. Danz, Ning Sun
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Publication number: 20220152750Abstract: An apparatus, material and method for forming a reliably roll-bonded, multi-layer aluminum alloy brazing sheet has a core of 2XXX, 3XXX, 5XXX or 6XXX alloy, a braze liner of 4XXX alloy and an interliner with Mn in the range of 0.2 to 1.0 wt. % and Si in the range of 0.31-1.0 wt. %. Alternatively, Mg in the range of 0.1 to 0.5 wt. % may be present in the interliner. Additional layers such as a second braze liner may be present for providing an inner surface of a heat exchanger. An additional interliner may optionally be used between the core the inner surface layer. The material may be used for highly corrosive environments like an EGR cooler.Type: ApplicationFiled: April 24, 2019Publication date: May 19, 2022Inventors: Tao ZHOU, Stephen F. BAUMANN, Baolute REN
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Publication number: 20200332406Abstract: A method is disclosed, which includes the step of preparing an aluminum alloy body for solutionizing. The aluminum alloy body may include not greater than 0.06 wt. % Fe, where at least some Fe is present. The aluminum body may include not greater than 5.0 wt. % Mg. The balance of the aluminum alloy body may be aluminum and unavoidable impurities. The aluminum alloy body may include a first vol. % of Fe-bearing particles. The method may include solutionizing the as-prepared aluminum alloy body. The solutionizing step may include dissolving at least some of the Fe-bearing particles into solid solution, thereby decreasing the first vol. % of Fe-bearing particles to a second vol. % of Fe-bearing particles in the as-solutionized aluminum alloy body.Type: ApplicationFiled: July 7, 2020Publication date: October 22, 2020Inventors: Hasso Weiland, Stephen F. Baumann, Eider A. Simielli
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Publication number: 20200086429Abstract: An aluminum alloy brazing sheet has a 3XXX, 1XXX or 6XXX core, an interliner and a 4XXX brazing layer without added Mg. The interliner has Bi and Mg, the magnesium migrating to the surface of the brazing sheet during brazing and reducing the aluminum oxide to facilitate brazing without flux in a controlled inert atmosphere with reduced oxygen.Type: ApplicationFiled: January 24, 2018Publication date: March 19, 2020Applicant: Arconic Inc.Inventors: Stephen F. Baumann, Michael P. Danz, Ning Sun
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Patent number: 8986850Abstract: Various illustrative embodiments of a multi-layer brazing sheet are provided. The multi-layer brazing sheet demonstrates improved corrosion resistance on its exposed air side surface.Type: GrantFiled: March 16, 2012Date of Patent: March 24, 2015Assignee: Alcoa, Inc.Inventors: Stephen F. Baumann, Raymond J. Kilmer, Baolute Ren
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Publication number: 20120237793Abstract: Various illustrative embodiments of a multi-layer brazing sheet are provided. The multi-layer brazing sheet demonstrates improved corrosion resistance on its exposed air side surface.Type: ApplicationFiled: March 16, 2012Publication date: September 20, 2012Inventors: Stephen F. Baumann, Raymond J. Kilmer, Baolute Ren
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Patent number: 7749613Abstract: A multi-layer aluminum brazing sheet including a core layer, interliner, braze clad layer and a sacrificial layer, in which the post-braze strength of the brazing sheet is optimized by controlling the manganese (Mn), silicon (Si), copper (Cu) and magnesium (Mg) contents of the core layer and the Mn, Si and Cu content of the interliner and the Mn, Si and Zn content of the sacrificial layer and the specifics of the braze thermal cycle. The brazing sheet maintains corrosion resistance, while optimizing post-braze strength, by utilizing 0.5 wt. % to 1.2 wt. % Cu in the interliner. Further, the interliner and sacrificial layer of the brazing sheet contain low or no magnesium to maintain the brazing sheet's braze-ability.Type: GrantFiled: April 21, 2006Date of Patent: July 6, 2010Assignees: Alcoa Inc., Kobe Steel Ltd.Inventors: Fumihiro Koshigoe, Akihiro Tsuruno, Toshiki Ueda, Stephen F. Baumann
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Publication number: 20070246509Abstract: A multi-layer aluminum brazing sheet including a core layer, interliner, braze clad layer and a sacrificial layer, in which the post-braze strength of the brazing sheet is optimized by controlling the manganese (Mn), silicon (Si), copper (Cu) and magnesium (Mg) contents of the core layer and the Mn, Si and Cu content of the interliner and the Mn, Si and Zn content of the sacrificial layer and the specifics of the braze thermal cycle. The brazing sheet maintains corrosion resistance, while optimizing post-braze strength, by utilizing 0.5 wt. % to 1.2 wt. % Cu in the interliner. Further, the interliner and sacrificial layer of the brazing sheet contain low or no magnesium to maintain the brazing sheet's braze-ability.Type: ApplicationFiled: April 21, 2006Publication date: October 25, 2007Inventors: Fumihiro Koshigoe, Akihiro Tsuruno, Toshiki Ueda, Stephen F. Baumann
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Patent number: 6925711Abstract: A wrought aluminum sheet product having a textured surface for improved heat transfer properties. A plurality of textured features having dimensions of about 1-50 microns is roll textured onto one or both sides of the sheet. The aluminum sheet may be used as the fins or tubing of a heat exchanger.Type: GrantFiled: August 28, 2003Date of Patent: August 9, 2005Assignee: Alcoa Inc.Inventors: Raymond J. Kilmer, John B. Eye, Stephen F. Baumann, Michael P. Danz
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Publication number: 20040086417Abstract: A process for making aluminum alloy finstock having improved combinations of post-braze tensile strength, electrical conductivity and self-corrosion resistance. The process includes continuously casting into sheet an alloy composition. The composition includes about 0.35-0.60 wt. % Si, about 1.8-2.6 wt. % Fe, about 0.02-0.30 wt. % Cu, about 0.40-0.70 wt. % Mn, up to about 3.0 wt. % Zn, up to about 0.05 wt. % In; up to about 0.05 wt. % Ti and up to about 0.2 wt. % Zr, the balance aluminum, incidental elements and impurities. The casting including a solidification rate of greater than about 200° C./sec. The sheet is then rolled to an intermediate anneal gauge and then annealed. The sheet is then cold rolled to a desired final gauge.Type: ApplicationFiled: August 1, 2003Publication date: May 6, 2004Inventors: Stephen F. Baumann, Raymond J. Kilmer
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Publication number: 20040068871Abstract: A wrought aluminum sheet product having a textured surface for improved heat transfer properties. A plurality of textured features having dimensions of about 1-50 microns is roll textured onto one or both sides of the sheet. The aluminum sheet may be used as the fins or tubing of a heat exchanger.Type: ApplicationFiled: August 28, 2003Publication date: April 15, 2004Inventors: Raymond J. Kilmer, John B. Eye, Stephen F. Baumann, Michael P. Danz
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Patent number: 6644388Abstract: A wrought aluminum sheet product having a textured surface for improved heat transfer properties. A plurality of textured features having dimensions of about 1-50 microns is roll textured onto one or both sides of the sheet. The aluminum sheet may be used as the fins or tubing of a heat exchanger.Type: GrantFiled: October 27, 2000Date of Patent: November 11, 2003Assignee: Alcoa Inc.Inventors: Raymond J. Kilmer, John B. Eye, Stephen F. Baumann, Michael P. Danz
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Patent number: 6344096Abstract: The present invention relates to an improved method of producing an aluminum alloy sheet which, in one embodiment, includes roll casting an aluminum alloy strip having a thickness of less than about 0.5 inch and, subsequently, preferably without intervening thermal treatments or surface cleaning, cold rolling the strip to a thickness of less than about 0.15 inch, after which the cold rolled strip is subjected to thermal treatment which is preferably either continuous annealing or solution heat treatment. The aluminum alloy, in a continuous annealing embodiment, is preferably selected from the group consisting of the 3XXX and 5XXX series. In another embodiment wherein solution heat treatment is employed, the aluminum alloy is preferably selected from the group consisting of 2XXX and 6XXX. The sheet may be converted into a motor vehicle body panel.Type: GrantFiled: May 11, 1995Date of Patent: February 5, 2002Assignee: Alcoa Inc.Inventors: Stephen F. Baumann, Robert E. Sanders, Jr., Scott L. Palmer
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Patent number: 6280543Abstract: The invention hereof is directed to a continuous casting of flat rolled sheets selected from automotive sheet, can body sheet, and endstock which exhibits properties comparable to the same products made from World Class Ingot. A preferable embodiment for the continuous caster is a vertical continuous caster.Type: GrantFiled: January 21, 1998Date of Patent: August 28, 2001Assignee: Alcoa Inc.Inventors: Harry R. Zonker, Stephen F. Baumann, Robert E. Sanders, W. Bryan Steverson
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Patent number: 5714019Abstract: The present invention relates to an improved method of producing aluminum alloy can body stock and can end stock which are particularly suitable for use in manufacturing aluminum alloy can bodies and ends for can bodies. The method for can body stock includes roll casting an aluminum alloy strip having a thickness of less than about 1 to 5 mm and, subsequently, batch annealing the strip, followed by cold rolling, continuous annealing, quenching and cold rolling to desired gauge. The aluminum alloy sheets may then be employed in manufacturing aluminum alloy can bodies. The process produces aluminum alloy sheet having an improved combination strength and caring properties with acceptable surface characteristics. Unique aluminum alloys usable in the claimed processes are also disclosed. In another embodiment, can ends are made by roll casting, followed by cold rolling preferably without prior thermal treatment, continuous annealing, quenching and cold rolling to the desired gauge.Type: GrantFiled: June 26, 1995Date of Patent: February 3, 1998Assignee: Aluminum Company of AmericaInventors: Robert E. Sanders, Jr., Stephen F. Baumann, W. Bryan Steverson, Scott L. Palmer
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Patent number: 5669436Abstract: A composite metallurgical product includes a roll cast aluminum alloy core and a filler material bonded on the core. Assemblies joined by filler material are formed from this product by heating to flow the filler material into joints and subsequent solidification of the filler material in the joints. The composite product is made in several ways, including lamination at roll caster rolls, and lamination or thermal spraying at the exit side of a roll caster. The invention additionally provides for an angulation rolling method for varying percent of cladding on the composite, and a high-manganese aluminum alloy useful as core material in brazing sheet clad with aluminum-silicon brazing alloy.Type: GrantFiled: June 7, 1995Date of Patent: September 23, 1997Assignee: Aluminum Company of AmericaInventors: Kevin S. Papich, Ronald Bachowski, Stephen F. Baumann, Robert A. Cargnel, Gerald E. Carkin, Donald J. Clements, Ronald W. Gunkel, William H. Hoffman, Larry G. McKinney, A. Victor Pajerski, John J. Palko, Edward P. Patrick, Jr., Stephen J. Rennekamp, Philip C. Scheble, William R. Sharkins, Frank P. Swigon, William G. Truckner
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Patent number: 5624632Abstract: An aluminum alloy product for use as a damage tolerant product for aerospace applications, including fuselage skin stock. The aluminum alloy composition contains about 3-7 wt % magnesium, about 0.03-0.2 wt % zirconium, about 0.2-1.2 wt % manganese, up to 0.15 wt % silicon and about 0.05-0.5 wt % of a dispersoid-forming element selected from the group consisting of: scandium, erbium, yttrium, gadolinium, holmium and hafnium, the balance being aluminum and incidental elements and impurities.Type: GrantFiled: January 31, 1995Date of Patent: April 29, 1997Assignee: Aluminum Company of AmericaInventors: Stephen F. Baumann, Edward L. Colvin, Robert W. Hyland, Jr., Jocelyn I. Petit
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Patent number: 5476725Abstract: A composite metallurgical product includes a roll cast aluminum alloy core and a filler material bonded on the core. Assemblies joined by filler material are formed from this product by heating to flow the filler material into joints and subsequent solidification of the filler material in the joints. The composite product is made in several ways, including lamination at roll caster rolls, and lamination or thermal spraying at the exit side of a roll caster. The invention additionally provides for an angulation rolling method for varying percent of cladding on the composite, and a high-manganese aluminum alloy useful as core material in brazing sheet clad with aluminum-silicon brazing alloy.Type: GrantFiled: December 10, 1992Date of Patent: December 19, 1995Assignee: Aluminum Company of AmericaInventors: Kevin S. Papich, Ronald Bachowski, Stephen F. Baumann, Robert A. Cargnel, Gerald E. Carkin, Donald J. Clements, Ronald W. Gunkel, William W. Hoffman, Larry G. McKinney, A. Victor Pajerski, John P. Palko, Edward P. Patrick, Jr., Stephen J. Rennekamp, Philip C. Scheble, William R. Sharkins, Frank P. Swigon, William G. Truckner