With Treating Other Than Heating Patents (Class 228/114)
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Publication number: 20100163604Abstract: A method of splicing a trailing end of a downstream metal strip to the leading end of an upstream metal strip. The method has the steps of overlapping the leading end of the upstream strip with the trailing end of the downstream strip, and thereafter friction welding the overlapping ends together at a plurality of spots at which respective spot welds are thereby formed.Type: ApplicationFiled: December 22, 2009Publication date: July 1, 2010Inventors: Andreas NOÉ, Dieter BAUKLOH, Friedhelm AMBAUM, Stefan SONNTAG
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Publication number: 20100119772Abstract: The invention relates to a method for producing a friction-welded connection between a plurality of superimposed flat components held together by a connecting member, wherein a collar of said connecting member rests on an upper component and the front end of said connecting member forms a friction-welding zone with a lower component, said friction-welding zone being produced by rotation and pressure of the connecting member. After formation of the friction-welding zone, the rotation of the connecting member ceases at the end of a first step and, in a second step, upon cessation of the rotation of the connecting member prior to contact of the collar with the upper component, a pressure is exerted on the connecting member by a pressure-applying tool, said pressure pressing the collar against the upper component because of a deformation.Type: ApplicationFiled: September 14, 2007Publication date: May 13, 2010Applicant: EJOT GmbH & Co. KGInventors: Eberhard Christ, Jörg Thiem, Torsten Fuchs, Gerhard Dubiel
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Publication number: 20100096438Abstract: A method of welding that realizes enhancements of airtightness and watertightness at weld area: and a method of welding and method of friction stir welding that attain an enhancement of welding operation efficiency/speed. There is provided a method of welding comprising the first primary welding step of carrying out a friction stir welding on the abutting portion (J1) of metal members (1,1) from the surface (12) side of metal member (1) and the second primary welding step of carrying out a friction stir welding on the abutting portion (J1) from the reverse face (13) side of the member (1), wherein in the second primary welding step, the friction stir welding is performed while penetrating a stirring pin (B2) of rotation tool (B) in plasticized region (W1) formed in the first primary welding step.Type: ApplicationFiled: March 16, 2007Publication date: April 22, 2010Applicant: NIPPON LIGHT METAL COMPANY, LTDInventors: Hayato Sato, Hisashi Hori
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Publication number: 20100092789Abstract: A unitized assembly comprises a fiber metal laminate having at least one additive layer deposited thereonto such as by friction stir welding. The fiber metal laminate comprises metallic and non-metallic plies and having an innermost metallic ply. The innermost metallic ply and the additive layer are each sized and configured to facilitate the generation of thermal energy sufficient to deposit the first additive layer to the innermost metallic ply during the friction stir welding process. The additive layer is sized and configured to minimize thermal loads in the innermost metallic ply during deposition thereof. The unitized assembly may be formed using a stock member such as a metallic plate from which the innermost metallic ply may be machined. The metallic and non-metallic plies may be laid up over the innermost metallic ply. The substructure elements may be machined from the metallic plate.Type: ApplicationFiled: October 10, 2008Publication date: April 15, 2010Applicant: THE BOEING COMPANYInventors: David P. Heck, Loren J. Strahm
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Patent number: 7614271Abstract: A preform with edges overlapped and jointed each other and first and second outer members for forming outer surfaces of a hydroformed product, and reinforcement members that are jointed to the first and second outer members to form reinforcement ribs that divide a hollow cross section of the outer surfaces, the reinforcement members having dimensions capable of suppressing elongation in a tensile direction due to a tensile force that develops during hydroforming.Type: GrantFiled: June 26, 2008Date of Patent: November 10, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Kazuto Ueno, Kazuhiro Mitamura, Satoru Majima, Takashi Haraoka, Masaaki Yoshitome, Hideto Kanafusa
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Publication number: 20090148719Abstract: Friction-stir weldments and systems and methods for producing the same are disclosed. In one embodiment, a metal product includes a first metal plate having a first center-neutral axis, a second metal plate comprising a second center-neutral axis, and a friction-stir corner weld that connects the first metal plate to the second metal plate, where the first center-neutral axis of the first metal plate is transverse to the second center-neutral axis of the second metal plate. In another embodiment, a system for producing friction-stir weldments includes a backup anvil having a first supporting face and a second supporting face, where the first supporting face is adapted to receive and support the first metal plate, and where the second supporting face is adapted to receive and support a second metal plate, wherein the center-neutral axis of the first metal plate is transverse to the center-neutral axis of the second metal plate.Type: ApplicationFiled: December 7, 2007Publication date: June 11, 2009Applicant: Alcoa Inc.Inventors: Daniel B. Bergstrom, Jeffrey M. Shoup, Gregory L. Peer, Israel Stol, Kyle Williams
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Patent number: 7490752Abstract: A method for manufacturing aluminium alloy parts with precipitation hardening including friction stir welding of at least two elements made from the same alloy or different alloys, solution heat treatment, and quenching of welded parts, in which the elements are subjected to heat treatment before welding at temperature T for at least 2t1, t1 being defined as the minimum treatment duration at temperature T leading to a specific melting peak energy defined by AED equal to less than 1 J/g. A method according to the invention substantially avoids an increase in the grain size following solution heat treatment after welding. The invention further relates to novel aluminum materials as well as uses therefor.Type: GrantFiled: May 20, 2004Date of Patent: February 17, 2009Assignee: Alcan RhenaluInventors: Jean-Christophe Ehrstrom, Timothy Warner
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Patent number: 7467741Abstract: A method of forming a sputtering target assembly and the sputtering target assembly made therefrom are described. The method includes bonding a sputtering target to a backing plate at a low temperature. Also described is a method of forming a sputtering target assembly such that a gap is formed between the sputtering target and the backing plate. Also described is a method of forming a sputtering target assembly providing a mechanism to prevent unintended sputtering into the backing plate.Type: GrantFiled: October 21, 2003Date of Patent: December 23, 2008Assignee: Cabot CorporationInventors: Charles E. Wickersham, Jr., David P. Workman
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Patent number: 7406849Abstract: A preform with edges overlapped and jointed each other and first and second outer members for forming outer surfaces of a hydroformed product, and reinforcement members that are jointed to the first and second outer members to form reinforcement ribs that divide a hollow cross section of the outer surfaces, the reinforcement members having dimensions capable of suppressing elongation in a tensile direction due to a tensile force that develops during hydroforming.Type: GrantFiled: September 28, 2005Date of Patent: August 5, 2008Assignee: Nissan Motor Co., Ltd.Inventors: Kazuto Ueno, Kazuhiro Mitamura, Satoru Majima, Takashi Haraoka, Masaaki Yoshitome, Hideto Kanafusa
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Publication number: 20080135405Abstract: Provided is a metal double-layer structure in which a modified metallic member modified from a flat plate metallic member is bonded to be stuck to a plate material, manufacturing method thereof, and a method of regenerating a sputtering target using the method. The method includes the steps of: overlapping the plate material with the metallic member; inserting a rotary tool having a rotor and a probe projecting from a bottom surface of the rotor into a surface of the metallic member while rotated; bringing a distal end of the probe to a position close to a mating plane between the metallic member and the plate material to generate friction heat and stir the distal end, and moving the rotary tool to form adjacent motion tracks on the surface of the metallic member; and forming stirred areas along the mating plane to bond the metallic member and the plate material together, and modifying the metallic member into a modified metallic member.Type: ApplicationFiled: February 28, 2006Publication date: June 12, 2008Applicant: NIPPON LIGHT METAL COMPAYN, LTD.Inventors: Hisashi Hori, Nobushiro Seo, Tomohiro Komoto, Kazuo Tsuchiya
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Patent number: 7322508Abstract: A joining portion of an opposed surface of workpieces is heated by generating an induced current due to a change of a magnetic field as well as by applying a frictional heat to the joining portion, so that productivity and quality of welding can be improved.Type: GrantFiled: June 29, 2004Date of Patent: January 29, 2008Assignee: Research Institute of Industrial Science & TechnologyInventors: Woong Seong Chang, Sook Hwan Kim, Young Gak Kweon
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Patent number: 7125227Abstract: A monobloc bladed disc and a process for manufacturing or repairing a monobloc bladed disc, where the process includes forming, on a protruding projection belonging to a disc and extending from an upstream end to a downstream end along a protruding projection chord, a welded joint surface intended to allow a subsequent stage of fitting a blade by linear friction welding onto the protruding projection of the disc. The forming the welded joint surface is carried out in such a way that it includes at least two butt-jointed plane portions arranged in sequence along the protruding projection chord.Type: GrantFiled: September 10, 2004Date of Patent: October 24, 2006Assignee: Snecma MoteursInventors: Danielle Adde, Marie-France Bourgeois, Patrick Lestoille, Jean-Pierre Ferte, Francis Soniak, Gérard Miraucourt
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Patent number: 7114643Abstract: The present application pertains to unconventional sputter target/backing plate assemblies (10) for high power operation and to the low temperature method of making them. The sputter target/backing plate assemblies (10) comprise targets (12) and backing plates (16) having dissimilar thermal coefficients of expansion. Although the consolidated targets (12) and backing plates (16) have dissimilar thermal coefficients of expansion, they are able to be bonded together and used at high sputtering temperatures without bowing or bending and are able to utilize backing plates (16) normally associated with a specified target metal. In the method of making, a plurality of male projections (16) are formed in one member of the assembly (10) with a plurality of corresponding female grooves (32) formed in the other surface. The assembly (10) is bonded by conventional techniques around an annular zone that surrounds the male (26) and female portions (32).Type: GrantFiled: December 13, 2001Date of Patent: October 3, 2006Assignee: Tosoh SMD, Inc.Inventors: Eugene Y. Ivanov, Harry W. Conard
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Patent number: 7090113Abstract: A method is provided for assembling a shaft having a metal matrix composite mid shaft and monolithic high strength alloy forward and aft shafts. The forward and aft shafts are each inertia friction welded to separate annular transition pieces which include a barrier layer operative to prevent the formation of intermetallic compounds. Special tooling is used to avoid applying shear stresses to the transition piece during welding. The welded forward and aft subassemblies are subsequently heat treated before inertia friction welding them to the mid shaft.Type: GrantFiled: March 18, 2004Date of Patent: August 15, 2006Assignee: General Electric CompanyInventors: Charles William Carrier, Gary Mac Holloway, Charles Robert Wojciechowski
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Patent number: 7090112Abstract: A joint between one or more structural members and an associated method are provided. The joint includes a friction weld joint or other connection between faying surfaces of the members, and an exothermically reacted sealant disposed in an interface defined by the faying surfaces. The exothermic reaction of the sealant in the interface can be initiated before, during, or after joining the structural members such that the sealant at least partially seals the interface. The sealant can fill the spaces between the structural members to prevent the entry of chemicals, moisture, debris, and other substances, thereby reducing the likelihood of corrosion of the joint or structural members at the interface. Further, the sealant can form a bond with the structural members, thereby increasing the strength of the connection between the members.Type: GrantFiled: August 29, 2003Date of Patent: August 15, 2006Assignee: The Boeing CompanyInventor: Don Masingale
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Patent number: 7066375Abstract: A method for coating and an associated assembly including such a coating are provided. The assembly includes a workpiece defining a weld portion, such as a friction weld joint and a heat affected zone. A coating is disposed on the weld portion to at least partially cover the weld portion, thereby providing enhanced corrosion resistance to the workpiece.Type: GrantFiled: April 28, 2004Date of Patent: June 27, 2006Assignee: The Boeing CompanyInventor: David R. Bolser
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Patent number: 7011244Abstract: A centering insert device for centering two pipe elements that are to be welded together end to end, the device comprising a central body supporting a plurality of clamps. The clamps located at the center section planes have a circular conforming effect in at least one pair of central section planes of the two pipe elements. The clamps placed in at least one pair of end planes of the two pipe elements are adapted to become blocked against the inside walls of the pipe elements without deforming them, freezing the shape of the pipe elements in their initial state, i.e., their shape prior to the end clamps being actuated to come into abutment against the walls.Type: GrantFiled: December 21, 2001Date of Patent: March 14, 2006Assignee: Saipem S.A.Inventor: Michel Baylot
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Patent number: 6892928Abstract: Method of manufacturing a tubular end product, wherein an aluminum plate is formed into a generally cylindrical body such that opposite end sections of the cylindrical body are flattened and butted together along a joint region extending parallel to an axis of the cylindrical body, and such that each of the opposite flattened end sections has a predetermined width L as measured normal to the joint region, and the opposite flattened end sections are joined together at the joint region, by a friction stir butt welding operation wherein a rotary tool having a circular shoulder surface and a probe extending from the shoulder surface is moved relative to the cylindrical body while the shoulder surface is in rubbing contact with the flattened end sections, with the probe being rotated with the rotary tool and inserted in the joint region.Type: GrantFiled: September 2, 2003Date of Patent: May 17, 2005Assignee: Sumitomo Light Metal Industries, Ltd.Inventors: Sunao Tanaka, Masaki Kumagai
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Patent number: 6883700Abstract: A turbine blade closure system composed of a closure member capable of being friction welded in an aperture in a hollow-cast turbine blade to prevent the escape of cooling fluids from an internal cavity in the turbine blade. In one embodiment, the aperture is formed in the turbine blade during the manufacturing process as a result of one or more support projections used to position a core block in a turbine blade mold.Type: GrantFiled: September 26, 2002Date of Patent: April 26, 2005Assignee: Siemens Westinghouse Power CorporationInventors: Srikanth Chandrudu Kottilingam, Peter J. Ditzel
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Patent number: 6854634Abstract: A rivet having improved formability is provided. The rivet has a shank having a head at one end. The shank and the head have a refined grain structure. The rivet is manufactured from the region of the workpiece having a refined grain structure by first forming a region having a refined grain structure in a workpiece and then forming the rivet. The refined grain structure results in improved mechanical properties, such as formability, strength, toughness, ductility, corrosion resistance, and fatigue resistance. The improved formability of the rivet reduces the formation and propagation of cracks during the manufacture and installation of the rivets.Type: GrantFiled: May 14, 2002Date of Patent: February 15, 2005Assignee: The Boeing CompanyInventors: Edward Litwinski, Rahmatollah F. Toosky
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Patent number: 6833199Abstract: A joined structure has high strength, which is used for manufacturing a joint made from different metal materials. In the joined structure in which the different metal materials are joined, a reaction product layer to be generated on the joined interface is set to have a thickness of 0.5 &mgr;m or less. Moreover, the reaction product layer is allowed to intermittently exist on the joined interface. Furthermore, the reaction product layer contains a base material crystal consisting of base material atoms of 90 atom % or more on the joined interface.Type: GrantFiled: July 16, 2002Date of Patent: December 21, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masashi Fujita, Masayuki Narita, Yasuyuki Hama, Kenji Ikeuchi, Makoto Takahashi
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Patent number: 6749103Abstract: A low temperature target and backing plate bonding process and assemblies made thereby. A plurality of projections are formed in the harder member of the assembly. The assembly is bonded by conventional techniques around the peripheral assembly boundaries. The assembly is then pressure consolidated at low temperature so that the projections, circumscribed by the bonded zone, penetrate into the softer member promoting the formation of metal to metal cold diffusion type bonds.Type: GrantFiled: December 21, 2000Date of Patent: June 15, 2004Assignee: Tosoh SMD, Inc.Inventors: Eugene Y. Ivanov, Harry W. Conard
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Patent number: 6736305Abstract: The present invention relates to rotary friction welding and non-rotary motion friction welding, providing means for controlling ductilities of the components during the welding process so as to bias the welding process in favor of a first component or to match the ductilities of different components thereby facilitating the welding process.Type: GrantFiled: September 5, 2001Date of Patent: May 18, 2004Assignee: Rolls-Royce plcInventors: Derek J Foster, Michael S Hodgson, Sandra J King
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Patent number: 6691910Abstract: A rod material made of Ti alloy has a larger diameter portion at the end, which is joined with the end of material made of Ti—Al intermetallic compound, by friction welding, to form a poppet valve for an internal combustion engine. Instead of providing such larger diameter portion, the end of the material made of Ti—Al intermetallic compound may be heated to facilitate joining.Type: GrantFiled: September 17, 2002Date of Patent: February 17, 2004Assignee: Fuji Oozx, Inc.Inventors: Masahito Hirose, Hiroaki Asanuma
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Patent number: 6659331Abstract: We have discovered a method of producing a complex-shaped aluminum alloy article, where welding has been employed to form the article, where an anodized aluminum coating is produced over a surface of the article including the weld joint, and where the anodized aluminum coating is uniform, providing improved performance over that previously known in the art for welded articles exposed to a corrosive plasma environment.Type: GrantFiled: February 26, 2002Date of Patent: December 9, 2003Assignee: Applied Materials, IncInventors: Senh Thach, Jennifer Y. Sun, Shun Jackson Wu, Yixing Lin, Clifford C. Stow
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Patent number: 6660106Abstract: Large diameter dome tanks made of a plurality of plates friction stir welded together to form a blank and spun and/or stretched into form. The dome tanks may be for holding liquid rocket fuel. Methods of forming include friction stir welding two or more flat blanks together and spinning the combined workpiece into a hemisphere. The blanks may be sufficiently thick to enable stretching as well as spinning. Aluminum alloys may be used, and filler material may be included in thee friction stir welds to reduce grain growth and problems associated therewith in the spinning process.Type: GrantFiled: August 22, 2001Date of Patent: December 9, 2003Assignee: The Boeing CompanyInventors: Henry W. Babel, Douglas J. Waldron, Ronaldo Reyes de Jesus, William F. Bozich
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Patent number: 6581819Abstract: This invention provides a configuration of a joint that allows a satisfactory welded joint to be formed with reduced deformation of the joint region when two-face structures (panels) are friction-welded end to end. The panels 31, 32 each have two substantially parallel plates 33, 34 and a third member 35 connecting the two plates 33, 34. The end portions of the plates 33, 34 of one panel 32 are friction-welded to the end portions of the plates 33, 34 of the other panel 32. At least one of the panels has a plate 36 at its end for connecting the plates 33 and 34 and has a rigidity to support a pressing force produced during the friction welding.Type: GrantFiled: March 18, 1997Date of Patent: June 24, 2003Assignee: Hitachi, Ltd.Inventors: Kinya Aota, Tsuyoshi Takenaka, Yasuo Ishimaru
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Patent number: 6568582Abstract: The superplastically formed structural assembly includes first and second structural members having facing surfaces. The first and second structural members can include a first outer structural member, a second outer structural member or at least one intermediate structural member. In one embodiment, the first and second structural members include first and second outer structural members. In another embodiment, the first and second structural members include first and second intermediate structural members. The structural assembly includes at least one friction stir weld joint joining the first and second structural members. In one embodiment, the facing surface of the first structural member is at least partially covered with oxide to prevent thermo-compression welding of the first and second structural members adjacent the at least one friction stir weld joint. In another embodiment, the facing surface of the second structural member is at least partially covered with oxide.Type: GrantFiled: November 21, 2002Date of Patent: May 27, 2003Assignee: The Boeing CompanyInventor: Kevin James Colligan
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Publication number: 20030071107Abstract: The superplastically formed structural assembly includes first and second structural members having facing surfaces. The first and second structural members can include a first outer structural member, a second outer structural member or at least one intermediate structural member. In one embodiment, the first and second structural members include first and second outer structural members. In another embodiment, the first and second structural members include first and second intermediate structural members. The structural assembly includes at least one friction stir weld joint joining the first and second structural members. In one embodiment, the facing surface of the first structural member is at least partially covered with oxide to prevent thermo-compression welding of the first and second structural members adjacent the at least one friction stir weld joint. In another embodiment, the facing surface of the second structural member is at least partially covered with oxide.Type: ApplicationFiled: November 21, 2002Publication date: April 17, 2003Applicant: The Boeing CompanyInventor: Kevin James Colligan
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Patent number: 6516992Abstract: A method and apparatus for friction stir welding that produces a weld of significantly reduced surface roughness at significantly higher welding rates, in materials that are difficult to weld, such as non-extrudable aluminum alloys. The method includes cooling the stir welding tool during the welding process, thereby reducing the tendency of softened metal to adhere to the rotating pin and shoulder of the tool. The apparatus includes a tool with internal spaces or an external jacket, through which coolant can be pumped to remove heat and cool the tool during welding operations. In another embodiment, the apparatus includes a device for spraying a coolant onto exterior surfaces of the distal end of the welding tool to thereby remove heat from the tool, and the surrounding workpiece, during welding.Type: GrantFiled: May 31, 1996Date of Patent: February 11, 2003Assignee: The Boeing CompanyInventor: Kevin James Colligan
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Patent number: 6367682Abstract: An airbag inflator, whose overall size is reduced and which is not adversely affected by the removed weld burrs and can effectively utilize the shape of the projecting weld burrs, is provided in the airbag inflator, in which the interior of the housing having gas discharge ports, is divided into two or more chambers by partition walls that are friction-welded together and define an ignition means accommodating chamber on the inner side thereof, the shape of the weld burrs formed on the ignition means accommodating chamber side during the friction welding is controlled by the weld burr restriction member in such a way as to obtain a space to accommodate ignition means.Type: GrantFiled: May 6, 1998Date of Patent: April 9, 2002Assignee: Daicel Chemical Industries, Ltd.Inventors: Yoshihiro Nakashima, Nobuyuki Katsuda
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Publication number: 20020027156Abstract: Friction Pull Plug Welding (FPPW) is a solid state repair process for defects up to one inch in length, only requiring single sided tooling (OSL) for usage on flight hardware. Early attempts with FPPW followed the matching plug/plate geometry precedence of the successful Friction Push Plug Welding program, however no defect free welds were achieved due to substantial plug necking and plug rotational stalling. The dual chamfered hole has eliminated plug rotational stalling, both upon initial plug/plate contact and during welding. Also, the necking of the heated plug metal under a tensile heating/forging load has been eliminated through the usage of the dual chamfered plate hole.Type: ApplicationFiled: May 15, 2001Publication date: March 7, 2002Inventors: Edmond R. Coletta, Mark A. Cantrell
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Patent number: 6334571Abstract: A method of welding an assembly comprising two aligned cylindrical end pieces and an interposed transverse intermediate piece, the method comprising friction welding the end pieces to the intermediate piece, where the intermediate piece is held in a cavity of a holder. The intermediate piece is made from strip stock and has a non-round profile to form radially protruding ears, the ears contacting the correspondingly shaped cavity in the holder.Type: GrantFiled: November 16, 2000Date of Patent: January 1, 2002Assignee: A.R.D. Industries Ltd.Inventors: Ronald B. Shantz, James R. Huber
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Patent number: 6247634Abstract: A knock-down anvil assembly provides a rotary anvil ring inside the cylindrical end portions of tank sections to be stir welded together as a butt joint, and an external reactive roller unit is provided which bears against the outer faces of these end portions at a location diametrically opposite from the stir welding tool. The anvil assembly can be disassembled within the finished tank into components which can be individually removed through an access opening in an end cover of the tank.Type: GrantFiled: June 30, 1999Date of Patent: June 19, 2001Assignee: MCE Technologies IncorporatedInventor: James A. Whitehouse
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Patent number: 6230958Abstract: Friction Pull Plug Welding (FPPW) is a solid state repair process for defects up to one inch in length, only requiring single sided tooling (OSL) for usage on flight hardware. Early attempts with FPPW followed the matching plug/plate geometry precedence of the successful Friction Push Plug Welding program, however no defect free welds were achieved due to substantial plug necking and plug rotational stalling. The dual chamfered hole has eliminated plug rotational stalling, both upon initial plug/plate contact and during welding. Also, the necking of the heated plug metal under a tensile heating/forging load has been eliminated through the usage of the dual chamfered plate hole.Type: GrantFiled: April 11, 2000Date of Patent: May 15, 2001Assignee: Lockheed Martin CorporationInventors: Edmond R. Coletta, Mark A. Cantrell
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Patent number: 6213379Abstract: Friction plug welding (FPW) usage is advantageous for friction stir welding (FSW) hole close-outs and weld repairs in 2195 Al—Cu—Li fusion or friction stir welds. Current fusion welding methods of Al—Cu—Li have produced welds containing varied defects. These areas are found by non-destructive examination both after welding and after proof testing. Current techniques for repairing typically small (<0.25″) defects weaken the weldment, rely heavily on welders' skill, and are costly. Friction plug welding repairs increase strength, ductility and resistance to cracking over initial weld quality, without requiring much time or operator skill. Friction plug welding while pulling the plug is advantageous because all hardware for performing the weld can be placed on one side of the workpiece.Type: GrantFiled: August 26, 1998Date of Patent: April 10, 2001Assignee: Lockheed Martin CorporationInventors: Riki Takeshita, Terry L. Hibbard
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Patent number: 6199745Abstract: A welding head including upper and lower probe members and probe pin. The upper and lower probe members are independently actuatable and biased to follow the profile of a workpiece and supply a balance load to opposed surfaces of a workpiece during welding operation.Type: GrantFiled: July 8, 1999Date of Patent: March 13, 2001Assignee: MTS Systems CorporationInventors: Craig L. Campbell, Mark S. Fullen, Michael J. Skinner
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Patent number: 6193136Abstract: Sealant 11 is supplied in advance to one or both of the electrical bonding areas 5,6 of the component 3 and the mounting surface 4, and as the component 3 is brought in contact with the mounting surface 4, the sealant 11 is compressed and filled therebetween in a required area. At the same time ultrasonic vibration is applied to the component 3 for generating friction between the electrical bonding areas 5, 6 of the component 3 and the mounting surface 4 in tight contact with each other, so that both electrical bonding areas 5, 6 are melted and ultrasonically bonded together, and thereby the component 3 is mounted on the mounting surface 4.Type: GrantFiled: August 13, 1999Date of Patent: February 27, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazushi Higashi, Hiroyuki Otani, Shozo Minamitani, Shinji Kanayama, Kenji Takahashi
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Patent number: 6168067Abstract: A method for reducing material property degradation during friction stir welding. More specifically, the method includes the steps of solution heat treating first and second structural members at a first predetermined temperature schedule. The first and second structural members are then quenched to a predetermined temperature at which the structural members are in a nonequilibrium state and have an incomplete temper. The first structural member is then positioned adjacent to the second structural member, thereby defining an interface therebetween. Thereafter, the first and second structural members are joined to form a structural assembly by friction stir welding the material along the interface prior to precipitation heat treating the structural assembly. The structural assembly is then aged, such as by precipitation heat treating, at a second predetermined temperature schedule to stabilize the material properties of the resulting structural assembly, thereby completing the temper of the material.Type: GrantFiled: June 23, 1998Date of Patent: January 2, 2001Assignee: McDonnell Douglas CorporationInventors: Douglas J. Waldron, Richard G. Pettit
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Patent number: 6152351Abstract: A process for manufacturing a wheel for a motor vehicle, in which a wheel spider and a rim ring are connected with one another by means of friction welding. At least one of these wheel parts consists of a magnesium alloy. The controlling of the speed of the start of the friction, of the friction and of the compression of the friction welding process, particularly of the deformation capacity, takes place as a function of physical characteristics of the magnesium alloy.Type: GrantFiled: July 27, 1998Date of Patent: November 28, 2000Assignees: Dr. Ing. h.c.F. Porsche AG, KUKA Schweissanlagen + Roboter GmbHInventors: Reinhold Separautzki, Jens Stach, Karel Mazac, Walter Weh
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Patent number: 6138355Abstract: A method for manufacturing a vehicle wheel includes the steps of providing a wheel rim and a spider and positioning the wheel rim and the spider adjacent each other. The wheel rim and the spider are then friction welded to each other. Subsequently, a portion of the spider is locked down onto the wheel rim by electromagnetic forming. Preferably, one end of the rim is positioned in a cavity formed in the spider. During friction welding, the upset material of the rim fills the cavity of the spider. Subsequently, while the metal is still relatively fluid, a flange of the spider is locked down onto the wheel rim by electromagnetic forming to secure the wheel rim and spider together.Type: GrantFiled: December 1, 1998Date of Patent: October 31, 2000Inventor: John R. Grassi
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Patent number: 6079609Abstract: A method of joining a magnetic armature of an electromagnetic actuator to a shaft is provided. The method includes holding the armature stationary while spinning the shaft. The spinning shaft is then pressing against the stationary armature such that friction between the shaft and the armature causes a portion of the armature and a portion of the shaft to melt and define a weld joint. The weld joint is permitted to cool thereby joining the shaft to the armature.Type: GrantFiled: October 28, 1998Date of Patent: June 27, 2000Assignee: Siemens Automotive CorporationInventor: James P. Fochtman
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Patent number: 6068178Abstract: A rotating probe 12 is disposed adjacent to a supporting roller 20. Metallic joining members 1, 2, which are butted or stacked to have a joining portion 3, are disposed between the supporting roller 20 and the probe 12 with one surface of the joining members 1, 2 supported by a circumferential peripheral surface of the supporting roller 12, and the rotating probe 12 is inserted into the joining portion 3 of the joining members 12. Then, the joining members 1, 2 are advanced along the joining portion 3 so that a portion of the joining members 1, 2 where the probe 12 contacts is softened by the friction heat generated due to the rotation of the probe 12 and agitated by the probe 12 to thereby join the joining materials 1, 2.Type: GrantFiled: June 25, 1998Date of Patent: May 30, 2000Assignee: Showa Aluminum CorporationInventor: Hirozo Michisaka
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Patent number: 6036077Abstract: Shaft, for the transmission of torque, comprising first and second engagement elements. The shaft is divided in its longitudinal direction into a first and second section, wherein the first and second sections are concentrically joined to each other by a friction-welded joint. The first section is case-hardened and comprises the first engagement element, and the second section is tough-hardened and comprises the second engagement element which is induction-hardened and placed on or in a peripheral surface on the second section which lies at an end facing away from the first section.Type: GrantFiled: February 23, 1998Date of Patent: March 14, 2000Assignee: Volvo Wheel Loaders ABInventor: Tim Kingston
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Patent number: 6029879Abstract: A friction-stir welding probe tip is disclosed which has right-handed threads on one portion of the probe and left-handed threads on another portion of the probe such that weld material is drawn to the middle of the weld as the friction-stir welding probe is rotated and passed along the joint region of the pieces to be joined. This probe tip is also fitted with a shoulder region for gripping by a rotation means.Type: GrantFiled: September 23, 1997Date of Patent: February 29, 2000Inventor: Elijah E. Cocks
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Patent number: 5897047Abstract: A method of connecting an aluminum part with a steel part using a friction welding technique. The aluminum part is heat treated such as T6 treatment to raise its hardness. After that, the aluminum part is friction welded to the steel part. The steel part may also be heat treated to lower its hardness instead of or in addition to hardening of the aluminum part. A third part which has an intermediate hardness may be placed between the aluminum part and the steel part, and the aluminum part may be coupled with the steel part via the third part.Type: GrantFiled: September 9, 1996Date of Patent: April 27, 1999Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Nobuo Takei, Shigeru Takabe
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Patent number: 5314106Abstract: Blanks or structural components of steel are joined to those of an aluminum alloy (a) or titanium alloy (b) by friction-welding with insertion of at least one transition layer of a ductile subgroup metal, in particular by applying, according to (a), a pure nickel layer to the steel by friction-welding and joining the surface of the nickel layer, after weld bead removal, to the aluminum alloy by friction-welding. According to (b), a copper layer is applied to the steel by friction-welding and a vanadium layer is applied to the titanium alloy by friction-welding. The copper and vanadium surfaces are, after weld bead removal, then joined to one another by friction-welding. In the case of steel which tends to form martensitic zones, a layer of austenitic steel is applied by friction-welding before the application of the copper layer. The process is especially suitable for joining the turbine wheel and shaft or fixing component for the shaft of a turbocharger.Type: GrantFiled: March 16, 1993Date of Patent: May 24, 1994Assignee: Asea Brown Boveri AGInventors: Andrzej Ambroziak, Rudolf Lison, Rudolf Ricanek
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Patent number: 5305505Abstract: A process for making multi-section bomb casings of high strength alloy steel at a reasonable production rate that have the strength and fracture properties of single-piece casings, with the sections being joined using friction welding techniques.Type: GrantFiled: April 12, 1993Date of Patent: April 26, 1994Assignee: National Forge CompanyInventor: James D. Ruhlman
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Patent number: 5297719Abstract: A method of producing inner parts of a tripod joint followed by a tubular shaft has one end of the tubular shaft deformed in a non-chip-forming way. The deforming increases the wall thickness. Radial arms are connected to the thickened region of the tubular shaft end, preferably by friction welding.Type: GrantFiled: November 18, 1992Date of Patent: March 29, 1994Assignee: GKN Automotive AGInventor: Rolf Cremerius
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Patent number: 5223672Abstract: A hybrid package in which Kovar feedthroughs are friction welded to an aluminum housing. Friction welding produces a very strong weld joint which resists the thermal stresses induced between the aluminum housing and Kovar feedthroughs by the large difference in their coefficients of thermal expansion. Friction welding also produces a very small heat affected zone, while brazing, soldering and other types of welding produce large heat affected zones which can cause annealing problems. The aluminum package is easy to machine, light in weight and provides good heat dissipation for the hybrid microcircuits in the package.Type: GrantFiled: June 11, 1990Date of Patent: June 29, 1993Assignee: TRW Inc.Inventors: George G. Pinneo, Marijan D. Grgas