Patents by Inventor Sylvain Henry
Sylvain Henry 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: 20140182821Abstract: The invention relates to an assembly of two brazing sheets the first one of which consists of a 3xxx alloy clad on one surface with a 1xxx alloy, the second one of which consists of an AA3xxx alloy clad on both surfaces thereof with a 4xxx alloy, which are assembled together by brazing so as to form a disrupted channel for the flow of exhaust gases, in particular for an engine vehicle.Type: ApplicationFiled: May 3, 2012Publication date: July 3, 2014Applicant: Constellium FranceInventors: Elodie Perrin, Sylvain Henry, Lionel Gerber
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Patent number: 8663817Abstract: A brazing sheet made up of a core sheet made of aluminum alloy covered on at least one side with a layer of cladding forming a sacrificial anode. The layer of cladding is formed of an aluminum alloy of chemical composition, in % by weight: Si: >2.0-7.0; Fe<0.5; Cu<1.0; Mn: 1.0-2.0; Mg<0.5; Zn: 1.0-3.0; Cr<0.25; Ni<1.5; Ti<0.25; Co<1.5; V, In, Sn, Zr, Sc<0.25 each; other elements <0.05 each and 0.15 in total. A heat exchanger tube may be produced by folding and brazing from the brazing sheet, where the layer of cladding forms a sacrificial anode constituting the lining of the tube or “inner-liner.Type: GrantFiled: May 28, 2009Date of Patent: March 4, 2014Assignee: Constellium FranceInventors: Sylvain Henry, Elodie Perrin
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Patent number: 8413876Abstract: The invention relates to a strip or sheet of aluminium alloy, comprising at least 80% by weight of aluminium and 0.01 to 0.5% yttrium and/or 0.05 to 0.5% bismuth, coated on at least one face with a brazing alloy. Said sheets and strips are used for the production of pieces by non-flux brazing.Type: GrantFiled: June 29, 2011Date of Patent: April 9, 2013Assignees: Constellium France, Constellium Rolled Products, Ravenswood, LLCInventors: Sandrine Dulac, Sylvain Henry
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Patent number: 8210421Abstract: A process for the manufacture of plated strips comprising at least two layers of different metals or alloys. The process allows subsequent separation of different cropped layers resulting from shearing the plated strips. The process comprises preparing plates corresponding to each of the plating layers, superimposing and assembly of these plates to form a composite plate, hot and possibly cold rolling of this composite plate to obtain a plated strip, and shearing of cropping areas during or after rolling. In one embodiment, prior to superimposing the different plates, an anti-sticking agent is applied to the cropping areas of at least one of the surfaces of the plates which will be in contact with each other.Type: GrantFiled: June 1, 2004Date of Patent: July 3, 2012Assignee: Constellium FranceInventors: Sandrine Dulac, Christian Barthelemy, Sylvain Henry, Armand Gabriel
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Publication number: 20110315748Abstract: The invention relates to a strip or sheet of aluminium alloy, comprising at least 80% by weight of aluminium and 0.01 to 0.5% yttrium and/or 0.05 to 0.5% bismuth, coated on at least one face with a brazing alloy. Said sheets and strips are used for the production of pieces by non-flux brazing.Type: ApplicationFiled: June 29, 2011Publication date: December 29, 2011Applicants: ALCAN ROLLED PRODUCTS-RAVENSWOOD, LLC, ALCAN RHENALUInventors: SANDRINE DULAC, SYLVAIN HENRY
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Publication number: 20110100615Abstract: A brazing sheet made up of a core sheet made of aluminum alloy covered on at least one side with a layer of cladding forming a sacrificial anode. The layer of cladding is formed of an aluminum alloy of chemical composition, in % by weight: Si: >2.0-7.0; Fe<0.5; Cu<1.0; Mn: 1.0-2.0; Mg<0.5; Zn: 1.0-3.0; Cr<0.25; Ni<1.5; Ti<0.25; Co<1.5; V, In, Sn, Zr, Sc<0.25 each; other elements <0.05 each and 0.15 in total. A heat exchanger tube may be produced by folding and brazing from the brazing sheet, where the layer of cladding forms a sacrificial anode constituting the lining of the tube or “inner-liner.Type: ApplicationFiled: May 28, 2009Publication date: May 5, 2011Applicant: ALCAN INTERNATIONAL LIMITEDInventors: Sylvain Henry, Elodie Perrin
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Patent number: 7926701Abstract: The invention relates to an aluminum alloy strip or sheet with the following composition (% by weight): Si 0.3-1.0; Fe<1.0; Cu 0.3-1.0; Mn 0.3-2.0; Mg 0.3-3.0; Zn<6.0; Ti<0.1; Zr<0.3; Cr<0.3; Ni<2.0; Co<2.0; Bi<0.5; Y<0.5, other elements <0.05 each and 0.15 total, the remainder being aluminum, coated on at least one face with an aluminum brazing alloy containing 4 to 15% of silicon and 0.01 to 0.5% of at least one of the Ag, Be, Bi, Ce, La, Pb, Pd, Sb, Y elements or mischmetal. Sheets and strips according to the invention can be used particularly for fluxless brazing of heat exchangers.Type: GrantFiled: November 24, 2004Date of Patent: April 19, 2011Assignees: Alcan Rhenalu, Alcan Rolled Products—Ravenswood, LLCInventors: Sandrine Dulac, Sylvain Henry
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Patent number: 7875129Abstract: A method of assembling aluminum alloy products, such as sheets, strips or tubes, by means of fluxless brazing, where the absence of flux is made possible by using a prior treatment resulting in formation of a conversion layer on the surface of the products. The treatment involves using a solution containing K+ and F? ions and at least one acid in a quantity such that the pH of the solution is less than 3. The inventive method enables effective flux was brazing in industrial conditions, such as a for the production of heat exchangers used in motor vehicles.Type: GrantFiled: July 26, 2005Date of Patent: January 25, 2011Assignee: Alcan RhenaluInventors: Sylvestre Safrany, Michel Mediouni, Sylvain Henry, Sandrine Dulac
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Patent number: 7811394Abstract: Aluminum alloy strips less than 0.3 mm thick for making heat exchangers, containing, in wt. %: Si<1.0, Fe<1.0, Cu<0.8, Mg<1.0, Mn?1.8, Zn<2.0, In<0.2, Sn<0.2, Bi<0.2, Ti<0.2, Cr<0.25, Zr<0.25, Si+Fe+Mn+Mg>0.8, other elements <0.05, each and <0.15 in total. The strips have between the surface and half the thickness a difference of corrosion potential, measured relative to a saturated calomel electrode in accordance with the ASTM G69 standard, of at least 10 mV. The invention also concerns a method for making such strips by continuous casting in conditions promoting formation of segregations in the strip core, optionally hot rolling, cold rolling optionally with one or several intermediate or final annealing(s) of 1 to 20 hours at a temperature between 200 and 450° C. The fins or separators made from the inventive strips have enhanced resistance to perforating corrosion.Type: GrantFiled: November 12, 2002Date of Patent: October 12, 2010Assignee: Pechiney RhenaluInventors: Sylvain Henry, Nathalie Remond, Bruno Chenal
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Publication number: 20070204935Abstract: A method of assembling aluminum alloy products, such as sheets, strips or tubes, by means of fluxless brazing, where the absence of flux is made possible by using a prior treatment resulting in formation of a conversion layer on the surface of the products. The treatment involves using a solution containing K+ and F? ions and at least one acid in a quantity such that the pH of the solution is less than 3. The inventive method enables effective flux was brazing in industrial conditions, such as a for the production of heat exchangers used in motor vehicles.Type: ApplicationFiled: July 26, 2005Publication date: September 6, 2007Applicant: ALCAN RHENALUInventors: Sylvestre Safrany, Michel Mediouni, Sylvain Henry, Sandrine Dulac
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Publication number: 20070158386Abstract: The invention relates to a method for assembling sheets of aluminium alloy, comprising a welding without flux, in a controlled atmosphere, at a temperature of 580 to 620° C. a rapid cooling and, optionally, reheating to a temperature of 80 to 250° C. in which at least one of the sheets has a core alloy comprising (wt. %), Si 0.3 1.0, Fe<1.0, Cu 0.3 1.0, Mn 0.3 2.0, Mg 0.3 3.0, Zn<6.0, Ti<0.1, Zr<0.3, Cr<0.3, Ni<2.0, Co<2.0, Bi<0.5, Y<0.5, other elements <0.05 each, to a total of 0.15, the remainder being aluminium and covered on at least one face with a welding aluminium alloy, comprising 4 to 15 % silicon and 0.01 to 0.5% of at least one of the elements Ag, Be, Bi, Ce, La, Pb, Pd, Sb, Y or a mixed metal. The method is particularly suitable for the non-flux welding of heat exchangers.Type: ApplicationFiled: November 24, 2004Publication date: July 12, 2007Applicants: ALCAN RHENALU, ALCAN ROLLED PRODUCTS RAVENSWOOD, LLCInventors: Sandrine Dulac, Sylvain Henry
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Publication number: 20070099023Abstract: The invention relates to a strip or sheet of aluminium alloy, comprising at least 80% by weight of aluminium and 0.01 to 0.5% yttrium and/or 0.05 to 0.5% bismuth, coated on at least one face with a brazing alloy. Said sheets and strips are used for the production of pieces by non-flux brazing.Type: ApplicationFiled: November 24, 2004Publication date: May 3, 2007Applicant: Alcan RhenaluInventors: Sandrine Dulac, Sylvain Henry
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Publication number: 20070031695Abstract: A process for the manufacture of plated strips comprising at least two layers of different metals or alloys. The process allows subsequent separation of different cropped layers resulting from shearing the plated strips. The process comprises preparing plates corresponding to each of the plating layers, superimposing and assembly of these plates to form a composite plate, hot and possibly cold rolling of this composite plate to obtain a plated strip, and shearing of cropping areas during or after rolling. In one embodiment, prior to superimposing the different plates, an anti-sticking agent is applied to the cropping areas of at least one of the surfaces of the plates which will be in contact with each other.Type: ApplicationFiled: June 1, 2004Publication date: February 8, 2007Inventors: Sylvain Henry, Armand Gabriel, Sandrine Dulac, Christian Barthelemy
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Publication number: 20060260723Abstract: Method for manufacturing aluminum alloy strips with thickness<0.3 mm, to be used in the manufacture of brazed heat exchangers, with composition (% by weight): Si<1.5; Fe<2.5; Cu<0.8; Mg<1.0; Mn=<1.8; Zn<2.0; In<0.2; Sn<0.2; Bi<0.2; Ti<0.2; Cr<0.25; Zr<0.25; Si+Fe+Mn+Mg>0.8, other elements<0.05 each and<0.15 in total, with a difference of corrosion potential between the surface and the mid-thickness, measured with respect to a saturated calomel electrode according to ASTM standard G69 equal to at least 10 mV., by method steps of continuous casting at a thickness of between 1 and 30 mm under conditions that promote the formation of segregations in the strip core, optionally hot rolling, cold rolling optionally with at least one intermediate or final annealing lasting for 1 to 20 h at a temperature of between 200 and 450° C.Type: ApplicationFiled: June 23, 2006Publication date: November 23, 2006Inventor: Sylvain Henry
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Patent number: 6923876Abstract: The invention relates to a process to manufacture a clad strip, preferably <1.5 mm thick, intended for the manufacture of brazed heat exchangers, comprising: casting a plate of core alloy comprising (% by weight): Si<0.8, Fe<0.8, Cu 0.2-0.9, Mn 0.7-1.5, Mg<0.4, Zn<0.2, Ti<0.1, other elements <0.05 each and <0.15 in total, the remainder aluminum, homogenizing the plate between 550 and 630° C. for at least one hour, cladding one or two sides of the plate with a brazing aluminum alloy, preferentially containing 5 to 13% silicon, hot rolling followed by cold rolling of the plate to a thickness close to a final desired thickness, recrystallization annealing of the strip between 300 and 4000 C., strain hardening of the annealed strip to obtain a permanent deformation between 2 and 10% and to obtain the desired final thickness.Type: GrantFiled: November 12, 2002Date of Patent: August 2, 2005Assignee: Pechiney RhenaluInventors: Jean-Claude Kucza, Sylvain Henry, Michel Mediouni, David Ebersolt, Nathalie Remond
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Publication number: 20050034793Abstract: Aluminum alloy strips less than 0.3 mm thick for making heat exchangers, containing, in wt. %: Si<1.0, Fe<1.0, Cu<0.8, Mg<1.0, Mn?1.8, Zn<2.0, In<0.2, Sn<0.2, Bi<0.2, Ti<0.2, Cr<0.25, Zr<0.25, Si+Fe+Mn+Mg>0.8, other elements <0.05, each and <0.15 in total. The strips have between the surface and half the thickness a difference of corrosion potential, measured relative to a saturated calomel electrode in accordance with the ASTM G69 standard, of at least 10 mV. The invention also concerns a method for making such strips by continuous casting in conditions promoting formation of segregations in the strip core, optionally hot rolling, cold rolling optionally with one or several intermediate or final annealing(s) of 1 to 20 hours at a temperature between 200 and 450° C. The fins or separators made from the inventive strips have enhanced resistance to perforating corrosion.Type: ApplicationFiled: November 12, 2002Publication date: February 17, 2005Inventors: Sylvain Henry, Nathalie Remond, Bruno Chenal
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Patent number: 6764558Abstract: The invention relates to a process to manufacture a clad strip, <1.5 mm thick, intended for the manufacture of brazed heat exchangers, comprising: casting of a plate made of core alloy composed as follows (o by weight): Si<0.8 Fe<0.8 Cu: 0.2-0.9 Mn: 0.7-1.5 Mg<0.4 Zn<0.2 Ti<0.1 other elements <0.05 each and <0.15 in total, the remainder aluminum, homogenization of said plate between 550 and 630° C. for at least one hour, cladding on one or two sides of said blank of a brazing aluminum alloy, preferentially containing 5 to 13% silicon, hot rolling followed by cold rolling of the plated blank to a thickness close to the final thickness, recrystallization annealing of the strip between 300 and 4000C., strain hardening of the annealed strip to obtain a permanent deformation between 2 and 10% and the final thickness.Type: GrantFiled: November 15, 2001Date of Patent: July 20, 2004Assignee: Pechiney RhenaluInventors: Jean-Claude Kucza, Sylvain Henry, Michel Mediouni, David Ebersolt, Nathalie Remond
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Publication number: 20030121572Abstract: The invention relates to a process to manufacture a clad strip, preferably <1.Type: ApplicationFiled: November 12, 2002Publication date: July 3, 2003Inventors: Jean-Claude Kucza, Sylvain Henry, Michel Mediouni, David Ebersolt, Nathalie Remond
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Publication number: 20030079812Abstract: The object of the invention is a method for manufacturing aluminum alloy strips with a thickness less than or equal to 12 &mgr;m, including:Type: ApplicationFiled: December 4, 2002Publication date: May 1, 2003Applicant: PECHINEY RHENALUInventors: Philippe Tavernier, Jacques Gagniere, Herve Gehanno, Sylvain Henry, Regine Debreux, Bruno Chenal
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Patent number: 6517646Abstract: A method for manufacturing aluminum alloy strips with a thickness less than or equal to 12 &mgr;m, by obtaining an alloy with composition (weight %): Si:0.15-0.40; Fe: 1.10-1.70; Mg<0.02; Mn:0.30-0.50; other elements <0.05 each and total <0.15; remainder aluminum; continuously casting between rolls a strip of this alloy with a thickness between 2 and 10 mm; homogenizing this strip at a temperature between 450 and 620° C. with a duration between 8 and 40 hrs; cold-rolling of the homogenized strip; intermediate annealing of this cold-rolled strip to a temperature between 200 and 400° C., and with a duration between 8 and 15 hrs; cold-rolling of the annealed strip up to the final thickness less than or equal to 12 &mgr;m; and final annealing of the strip at a temperature between 200 and 300° C., with a duration of at least 50 hrs. The method is notably applied to the manufacturing of strips for aseptic food packages of the brick type.Type: GrantFiled: August 13, 2001Date of Patent: February 11, 2003Assignee: Pechiney RhenaluInventors: Philippe Tavernier, Jacques Gagniere, Herve Gehanno, Sylvain Henry, Regine Debreux, Bruno Chenal