Using Dynamic Frictional Energy (i.e., Friction Welding) Patents (Class 228/112.1)
  • Publication number: 20120227890
    Abstract: A friction stir welding performed by preparing a pair of members to be welded, each including an abutment surface and a margin portion provided in an extended manner, the margin portion including a welding surface that is continuous to the abutment surface by using a welding tool for performing friction stir welding. The welding tool integrally includes a columnar shoulder portion and a probe portion formed on a leading end surface of the shoulder portion, the probe portion having a diameter smaller than a diameter of the shoulder portion. The abutment surfaces and the welding surfaces are brought into contact with each other so as to form a continuous welding line therebetween.
    Type: Application
    Filed: March 5, 2012
    Publication date: September 13, 2012
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Ryo YAMAUCHI, Kentaro KOBARI
  • Patent number: 8261961
    Abstract: A solid state method for the preparation of composite materials incorporating metal and nano materials is provided, wherein nano materials are deposited on a substrate and incorporated into the substrate structure by friction stir welding. Also provided are composite materials that include nano materials, which are prepared by friction stir welding.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: September 11, 2012
    Assignee: Lockheed Martin Corporation
    Inventor: Craig A. Brice
  • Patent number: 8261959
    Abstract: Friction stir welding equipment control force spindle for mounting in an orbital head housing uses a coaxial sensor to measure downforce. Simultaneously, an axial electrical actuator is controlled to dynamically correct the axial tool position during the welding, by a direct axial force system control, in order to maintain controlled downforce according to parameters previously set, based on numerical control. The equipment also sets up, monitors and controls spindle rotation speed, welding speed, acceleration speed and downforce using for example closed loop control functions. A laser system may scan the backing surface before welding and correct original tool path, in order to get an offset tool path. A precision alarm system may provide safe welding while preventing the tool from colliding with the backing surface.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: September 11, 2012
    Assignee: Embraer S.A.
    Inventors: Marcio Fernando Cruz, Gustavo Freitas, Hamilton Zanini, Jefferson Adriano da Costa, Robson Fernando de Oliverira Pereira, Edson Pereira, Fernando Ferreira Fernandez, Mauricio Andena
  • Publication number: 20120224972
    Abstract: A method for producing an integrally bladed rotor, in particular a gas turbine rotor, by means of joining, comprises the following steps:—Providing a blade (10) having a joining surface;—Providing a retaining mechanism having two clamping jaws (28);—Retaining the blade (10) at two opposite points of blade (10) by means of clamping jaws (28) in a purely force-closed manner; and—Pressing the blade (10) retained in a force-closed manner onto a basic rotor body, so that blade (10) is aligned independently in a joining position. A device for producing an integrally bladed rotor comprises a retaining mechanism for a blade (10) having two clamping jaws (28), and by pressing these jaws together, blade (10) is retained at two opposite points in a purely force-closed manner; and a mechanism for pressing blade (10) retained in a force-closed manner onto a basic rotor body, in such a way that blade (10) is aligned independently in a joining position.
    Type: Application
    Filed: November 12, 2010
    Publication date: September 6, 2012
    Applicant: MTU AERO ENGINES GMBH
    Inventors: Frank Stiehler, Hans Peter Borufka, Patrick Prokopczuk
  • Patent number: 8256657
    Abstract: A multi-shouldered friction stir welding tool (10) comprises an integral shank-pin unit (11) having a plurality of pin portions on the shank-pin unit, where the plurality of pin portions for driving into a plurality of joints to perform a friction stir welding operation on the corresponding plurality of joints and, where a shank portion of the shank-pin unit is for attachment to an optional axial tension rod (19), each of the friction stir welding modules comprises a pair of shoulders (13, 14) that is connected to the shank-pin unit where each shoulder has a distal end and a proximal end, where the proximal end of each shoulder faces the pin portion of the shank-pin unit, whereby the shoulder and pin(s) rotate in unison, and a pair of split collars or a pair of nuts that is connected to the shank-pin unit and faces the distal end of each shoulder, where the plurality of friction stir welding modules are connected to each other whereby the modules rotate in unison to simultaneously make a plurality of parallel
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: September 4, 2012
    Assignee: Alcoa Inc.
    Inventors: Israel Stol, John W. Cobes, Trent A. Chontas, Joseph M. Fridy
  • Publication number: 20120205348
    Abstract: A method and apparatus for fixturing an airfoil stub during linear friction welding are described. Critical clamping support structures are manufactured by a direct digital manufacturing process such as direct metal laser sintering to minimize time and expense of the process.
    Type: Application
    Filed: February 14, 2011
    Publication date: August 16, 2012
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: James Romanelli, Wangen Lin, Robert P. Delisle, Herbert A. Chin, James J. Moor, Jesse R. Boyer
  • Patent number: 8240540
    Abstract: Provided is a structure for joining members applicable even to different members. Included are first and second plate-like members 1 and 2 to be joined which are stacked one on the other for face-to-face contact and formed with respective, mutually contiguous holes 3 and 4, a fastening member 5 formed with a threaded hole 20 contiguous with the holes 3 and 4 of the members 1 and 2 and abutting on the member 1 on a side away from the member 2 and an auxiliary member 7 inserted into the holes 20, 3 and 4 of the members 5, 1 and 2. Due to frictional heat and plastic flow, material derived from the member 7 is adapted to enter into a threaded groove on an inner periphery of the hole 20 of the member 5 and cover a circumference of the hole 4 of the member 2 so as to join the members 1 and 2 together.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: August 14, 2012
    Assignee: Hino Motors, Ltd.
    Inventors: Kazuharu Tanaka, Hiroshi Fukuda
  • Patent number: 8241556
    Abstract: A tool is provided that is capable of friction stir processing, friction stir mixing, and friction stir welding of high melting temperature and low melting temperature materials, wherein the collar is now divided into at least an inner and an outer collar coupled to the shank and the FSW tip, wherein new thermal barriers enable expansion of the inner collar to be directed inward to thereby create compression on the FSW tip instead of allowing the FSW tip to become loose in the tool at elevated temperatures.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: August 14, 2012
    Assignee: Megastir Technologies LLC
    Inventors: David Rosal, Scott M. Packer, Russell J. Steel, Peter Cariveau, John Williams, Lance Richman
  • Publication number: 20120200217
    Abstract: A method of production of a radio frequency accelerator which has a tubular part 1 which forms an acceleration cavity, including a temporary assembly step of making a plurality of component members 11 to 14 which have shapes obtained by splitting the tubular part 1 mate with each other to temporarily assemble them into the shape of the tubular part 10 and a welding step of welding the plurality of component members 11 to 14 together. The temporary assembly step includes a step of placing, inside of the tubular part 1, support members 21 for contacting the inside surface of the tubular part 1 and supporting the tubular part 1 from the inside, and the welding step includes a step of welding the plurality of component members 11 to 14 along the butt lines 51 by friction stir welding.
    Type: Application
    Filed: October 14, 2010
    Publication date: August 9, 2012
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TIM CORPORATION, INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATION
    Inventors: Noriyosu Hayashizaki, Toshiyuki Hattori, Takuya Ishibashi, Fujio Naito, Eiichi Takasaki, Hideaki Yamauchi
  • Patent number: 8235277
    Abstract: A method for producing a sputtering target assembly bonded to a backing plate. The method includes bonding a target to a high strength backing plate and further creating a vacuum seal between the target and the backing plate using friction stir welding processes.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: August 7, 2012
    Assignee: Tosoh SMD, Inc.
    Inventors: Eugene Y. Ivanov, Erich Theado
  • Publication number: 20120193401
    Abstract: The present invention provides an economic rotation tool for joining a pair of metal members which form an inner corner by abutting the pair of metal members (1) each other, and a joining inner corner method using the same. The rotation tool for joining the pair of metal members which form an inner corner (1) by abutting the pair of metal members each other to perform friction stir welding on an inner corner portion formed by abutting a pair of metal members against each other comprising: a stirring pin (3) to be inserted into the inner corner portion; and a base block (2) supporting the stirring pin (3) and to be brought into contact with one and the other of the pair of metal members respectively, wherein the base block (2) includes: a body portion (4) having a taper shape; and a shoulder portion (5) formed detachably at a tip of the body portion, and the body portion (4) and the shoulder portion (5) are penetrated by the stirring pin (3).
    Type: Application
    Filed: August 12, 2010
    Publication date: August 2, 2012
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi Hori, Nobushiro Seo
  • Patent number: 8225984
    Abstract: A welding method is provided for forming a weld joint between first and second elements of a workpiece. The method includes heating the first and second elements to form an interface of material in a plasticized or melted state interface between the elements. The interface material is then allowed to cool to a plasticized state if previously in a melted state. The interface material, while in the plasticized state, is then mixed, for example, using a grinding/extruding process, to remove any dendritic-type weld microstructures introduced into the interface material during the heating process.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: July 24, 2012
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: R. Jeffrey Ding
  • Patent number: 8221899
    Abstract: A joined body of dissimilar metals which is produced by joining a steel material and an aluminum alloy material, wherein the steel material to be joined has a specific composition and is specified in the compositions of outer surface oxide layer and inner oxide layer and the aluminum alloy material to be joined is an Al—Mg—Si-base aluminum alloy having a specific composition. In the joined body of dissimilar metals, a content of Fe at a joint interface on the aluminum alloy material side is regulated, and a reaction layer of Fe and Al is formed at the joint interface of the joined body of dissimilar metals. The joined body of dissimilar metals exhibits high joint strength.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: July 17, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Mikako Takeda, Mamoru Nagao, Masao Kinefuchi
  • Patent number: 8220693
    Abstract: A procedure for incorporating particles to a predetermined depth in a body to develop a composite surface layer using friction stir processing is described. The process comprises; preparing the surface of the body; applying particulate matter to the prepared surface; selecting a friction stir tool with a pin length substantially equal to the desired composite layer thickness; using a friction stir process to frictionally heat, stir and intermix the particulate matter with the matrix of the article; and traversing the friction stir tool across the body.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: July 17, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Paul E. Krajewski, Yen-Lung Chen
  • Patent number: 8224881
    Abstract: A system and method for managing welding information is provided. The invention includes a remote system, a client system and/or a welder. The invention further provides for establishment of a secure connection for transmission of information between the remote system and the client system and/or the welder and/or establishment of access rights of a user/client system/welder. The invention further provides for formulating of a query based upon a request for welding information from a user/welder/client system and searching of data store(s) based at least in part upon the request and/or access rights. The invention further includes filtering of search results and a design of experiment(s) component to facilitate creation of welding procedure(s). The invention further includes calculation of weld costs for potentially suitable welding procedure(s) and communication with a customer's resource planning system in order to facilitate further automation in the industrial environment.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: July 17, 2012
    Assignee: Lincoln Global, Inc.
    Inventors: Theresa M. Spear, George Daryl Blankenship
  • Patent number: 8220694
    Abstract: A friction stir welding method utilizes a joining tool comprising a friction surface; a first workpiece comprising a first treating layer, a second workpiece comprising a second treating layer, and a joining member with a melting point lower than that of the first workpiece and the second workpiece. The joining member is arranged at the joining portion of the first workpiece and the second workpiece, and abutting the first workpiece and the second workpiece. The friction surface of the joining tool is positioned to resist at least one of the first treating layer and the second treating layer. The joining tool is rotated and moved to agitate at least one of the first workpiece and the second workpiece, until at least part of the first workpiece and the second workpiece are plasticized and joined together.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 17, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd., FINE TECH Corporation
    Inventors: Koichi Nakagawa, Qing Liu, Isao Shiozawa, Takeo Nakagawa
  • Publication number: 20120160363
    Abstract: Provided are high manganese containing ferrous based components and their use in oil, gas and/or petrochemical applications. In one form, the components include 5 to 40 wt % manganese, 0.01 to 3.0 wt % carbon and the balance iron. The components may optionally include one or more alloying elements chosen from chromium, nickel, cobalt, molybdenum, niobium, copper, titanium, vanadium, nitrogen, boron and combinations thereof.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 28, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Hyun Woo Jin, Raghavan Ayer, Douglas Paul Fairchild, Mario L. Macia
  • Patent number: 8205785
    Abstract: A counter-rotating spindle includes a shoulder tool, a pin tool inserted in the shoulder tool, a first motor that is connected with the pin tool and rotates the pin tool, and a second motor that is connected with the shoulder tool and rotates the shoulder tool. The direction and the speed of the rotation for the pin tool may be selected independently from the speed and direction of rotation of the shoulder tool enabling optimization of the friction stir welding process. Counter-rotating the pin tool and the shoulder tool may improve the mixing abilities and efficiency of the pin tool and may prevent the galling effect between the pin tool and the shoulder tool. The counter-rotating spindle may be used, for example, for continuous path friction stir welding and spot welding of aluminum and its alloys, including cast alloys, as well as joining similar and dissimilar alloys.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: June 26, 2012
    Assignee: The Boeing Company
    Inventors: Kurt A. Burton, Mike P. Matlack
  • Publication number: 20120153007
    Abstract: A method and an apparatus for friction stir spot welding together at least two metal sheets is described. A tool comprising a stepwise decreasing diameter towards the welding end is used. Each stepwise decrease in diameter defines a shoulder. The first shoulder is situated at a distance (x) from the welding end which is larger than zero and smaller than the minimum thickness (Wmin) of one of the metal sheets, and wherein a higher number of shoulders than the number of metal sheets to be joined, are situated within a distance (L) from the welding end that is smaller than the maximum thickness (Wmax) of a metal sheet times the number of metal sheets to be joined minus one.
    Type: Application
    Filed: June 4, 2010
    Publication date: June 21, 2012
    Applicant: ESAB AB
    Inventors: Jörgen Säll, Per Eriksson
  • Patent number: 8196800
    Abstract: Friction welding systems and methods including a welding arrangement configured to impart kinetic friction between at least one surface of a first workpiece and at least one surface of a second workpiece to form a weld, a force providing mechanism arranged and disposed for applying a force to one or both of the first workpiece and the second workpiece, and a sensor arranged and disposed to measure a parameter of the welding arrangement, wherein an amount of vibration is determinable from the measured parameter.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: June 12, 2012
    Assignee: General Electric Company
    Inventors: James Grooms, Charles William Carrier
  • Patent number: 8196300
    Abstract: A manufacturing method of an electric contact and manufacturing equipment of the electric contact. A contact and a metal base are superimposed and support by a jig, and a rotational tool, which rotates at a predetermined speed and advances/retracts to/from the jig, is pressed into a surface, which is not contacted with the contact, of the metal base while being rotated, so that the contact and the metal base are joined by solid state diffusion welding by using frictional heat generated by friction between the rotational tool and the metal base, and then the rotational tool is retracted from the metal base.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: June 12, 2012
    Assignee: Fuji Electric Fa Components & Systems, Ltd.
    Inventors: Seiji Imamura, Shinji Tada, Mamoru Akimoto, Yuuichi Yamamoto, Toshiya Shibayanagi
  • Patent number: 8191753
    Abstract: An apparatus and computer program are disclosed for processing at least one workpiece using a rotary tool with rotating member for contacting and processing the workpiece. The methods include oscillating the rotary tool laterally with respect to a selected propagation path for the rotating member with respect to the workpiece to define an oscillation path for the rotating member. The methods further include obtaining force signals or parameters related to the force experienced by the rotary tool at least while the rotating member is disposed at the extremes of the oscillation. The force signals or parameters associated with the extremes can then be analyzed to determine a lateral position of the selected path with respect to a target path and a lateral offset value can be determined based on the lateral position. The lateral distance between the selected path and the target path can be decreased based on the lateral offset value.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: June 5, 2012
    Assignee: Vanderbilt University
    Inventors: Paul Fleming, David H. Lammlein, George E. Cook, Don Mitchell Wilkes, Alvin M. Strauss, David R. Delapp, Daniel A. Hartman
  • Patent number: 8191755
    Abstract: A method of manufacturing a composite rotor disc (2) in which, following diffusion bonding of a ceramic core section (4) of the rotor disc (2) to a metallic outer section (6) of the rotor disc (2) at an elevated temperature, the rotor disc (2) is allowed to cool to a predetermined temperature and is held at this predetermined temperature for a predetermined period of time. While the rotor disc (2) is held at this predetermined temperature it is loaded in a radially outward direction. The rotor disc (2) is then allowed to cool to a temperature below the predetermined temperature.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: June 5, 2012
    Assignee: Rolls-Royce PLC
    Inventor: Brynley Clark
  • Patent number: 8186561
    Abstract: A system and method for friction stir processing of a hand-held cutting edge, wherein friction stir processing techniques are used to modify the properties of the hand-held cutting edge to obtain superior edge retention and superior resistance to chipping of the hand-held cutting edge.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: May 29, 2012
    Assignee: Megastir Technologies, LLC
    Inventors: Charles E. Allen, Richard A. Flak, Scott M. Packer, Russell J. Steel, Hobie Smith
  • Patent number: 8186566
    Abstract: A process for cohesive bonding between a metal surface and a nonmetallic substrate is provided. The non-metallic substrate may comprise a plurality of microfilaments and/or nanofilaments dispersed into and below the surface of the substrate. The application of pressure and laterally-oriented high frequency and low amplitude vibration may allow for diffusion bonding between the metal surface and material of the nanofilaments. Another method includes discharging energy from a bank of capacitors to melt adjoining surfaces of the metal surface and nonmetallic substrate. Additionally, a cohesive bonding method may further comprise converting electrical oscillations of ultrasonic frequency into ultrasonic vibrations which are transmitted to the metal body and/or substrate for fusing the two materials together.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: May 29, 2012
    Assignee: Nexgeneering Technology LLC
    Inventors: Eugen Abramovici, David E. Gevers, Lucian M. Silvian
  • Patent number: 8186567
    Abstract: A method for weldbonding at least two work-pieces together includes applying an adhesive to a first surface of a first work-piece, and bringing the first surface of the first work-piece into contact with a surface of a second work-piece. The first work-piece and second work-piece are then friction stir or friction stir spot welded together, and the adhesive is cured. The use of bonding tools to maintain the two work-pieces together during curing of the adhesive is eliminated.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: May 29, 2012
    Assignee: The Boeing Company
    Inventor: Rajesh Talwar
  • Publication number: 20120125522
    Abstract: The present invention relates to a technique for producing a jointed member by subjecting two to-be-jointed members which are contacted each other to friction stir welding. The method for producing a jointed member executes a dwelling step in which a probe is rotated only for a predetermined period at least one of a probe starting point position which is a position of the probe for forming a joint starting point in the to-be-jointed member and a probe end point position which is a position of the probe for forming a joint end point in the to-be-jointed member.
    Type: Application
    Filed: January 15, 2010
    Publication date: May 24, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshinori Kato, Kazushige Yamasu
  • Patent number: 8181841
    Abstract: A linear friction welding system in one embodiment includes a ram configured to vibrate along a welding axis, at least one rocker arm with a first end portion spaced apart from the welding axis and constrained against movement along the welding axis, and a second end portion which is movable along the welding axis, and a first welding component support member configured to hold a first welding component, the first welding component support member operably connected to the ram and supported by the second end portion of the at least one rocker arm, such that vibration of the ram along the welding axis causes the location of the first welding component support member along an axis orthogonal to the welding axis to vary.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: May 22, 2012
    Assignee: APCI, LLC
    Inventors: Stephen A. Johnson, Thaddeus W. Gorski
  • Patent number: 8181843
    Abstract: In a friction stir welding method, a tool is moved being rotated along portions to be joined of a work piece, where the portions include a corner with a smaller curvature that connect two portions with larger curvatures. The method includes the steps of setting the work piece on a supporting member, rotating the tool around a center axis thereof, moving the tool toward the work piece to penetrate a portion of the tool into the work piece at the portions to be joined, and moving and turning the tool along the portions to be joined. A rotation speed of the tool around the center axis thereof is decreased to be smaller at the corner with the smaller curvature than the rotation speed of the tool around the center axis thereof at the portions with the larger curvatures.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: May 22, 2012
    Assignee: Calsonic Kansei Corporation
    Inventors: Masao Enzaka, Hiroyuki Hakaridani, Soichiro Yamamoto
  • Publication number: 20120121931
    Abstract: A joined body of dissimilar metals which is produced by joining a steel material and an aluminum alloy material, wherein the steel material to be joined has a specific composition and is specified in the compositions of outer surface oxide layer and inner oxide layer and the aluminum alloy material to be joined is an Al—Mg-base or Al—Zn—Mg-base aluminum alloy having a specific composition. In the joined body of dissimilar metals, a content of Fe at a joint interface on the aluminum alloy material side is regulated, and a reaction layer of Fe and Al is formed at the joint interface of the joined body of dissimilar metals. The joined body of dissimilar metals exhibits high joint strength.
    Type: Application
    Filed: January 26, 2012
    Publication date: May 17, 2012
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO
    Inventors: Mikako TAKEDA, Mamoru Nagao, Masao Kinefuchi
  • Publication number: 20120118937
    Abstract: In a friction stir welding method, a tool is moved being rotated along portions to be joined of a work piece, where the portions include a corner with a smaller curvature that connect two portions with larger curvatures. The method includes the steps of setting the work piece on a supporting member, rotating the tool around a center axis thereof, moving the tool toward the work piece to penetrate a portion of the tool into the work piece at the portions to be joined, and moving and turning the tool along the portions to be joined. A rotation speed of the tool around the center axis thereof is decreased to be smaller at the corner with the smaller curvature than the rotation speed of the tool around the center axis thereof at the portions with the larger curvatures.
    Type: Application
    Filed: October 25, 2011
    Publication date: May 17, 2012
    Inventors: Masao ENZAKA, Hiroyuki Hakaridani, Soichiro Yamamoto
  • Patent number: 8177113
    Abstract: An assembly for positioning a structural assembly for friction stir welding, and a system and method for friction stir welding the structural assembly are provided. The assembly includes a frame defining an aperture therein, and at least one structural member positioned within the aperture. The assembly also includes at least one spacer positioned within the aperture such that the spacer and structural member substantially fill the aperture to secure the structural member within the frame, as well as a substrate secured to the frame and positioned adjacent to the structural member in an overlapping configuration to define an interface between the substrate and structural member. In this configuration, the substrate and structural member are capable of being friction stir welded together.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: May 15, 2012
    Assignee: The Boeing Company
    Inventor: Kevin T. Slattery
  • Patent number: 8167188
    Abstract: A friction stir welding method includes providing a joining tool including a friction surface, a first workpiece, and a second workpiece, and arranging the first workpiece and second workpiece in position with a first joining surface abutting a second joining surface. A friction surface of a joining tool resists at least one of the first treating surface and the second treating surface, and the first workpiece and the second workpiece cooperatively define a slot. Then positioning, rotating, and moving the joining tool to rub and stir at least one of the first workpiece and the second workpiece, thus plasticizing at least part of the first workpiece and the second workpiece to join the first workpiece and the second workpiece.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: May 1, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd, Hon Hai Precision Industry Co., Ltd., FINE TECH Corporation
    Inventors: Koichi Nakagawa, Qing Liu, Isao Shiozawa, Takeo Nakagawa
  • Patent number: 8157154
    Abstract: A friction stir tool is provided to perform friction stir riveting using a partially consumable pin, wherein the pin includes a cutting edge on a bottom surface thereof, wherein the tool is rotated at a first speed to enable cutting by the pin into a first material that is overlapping a second material, wherein after the pin has cut to a sufficient depth, the rotational speed of the tool is increased to thereby enable plasticization of the consumable pin, the first material, and the second material, wherein the tool is then rapidly decelerated until stopped, enabling diffusion bonding between the pin, the first material and the second material.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: April 17, 2012
    Assignees: Brigham Young University, Megastir Technologies, LLC
    Inventors: Scott M. Packer, Russell J Steel, Jonathan A. Babb, Michael P. Miles, Kent Kohkonen
  • Patent number: 8157156
    Abstract: A method of manufacturing a friction stir tool that has an axis of rotation and a welding tip that is made of powdered metal material.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: April 17, 2012
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Denis Christopherson, Jr.
  • Publication number: 20120080506
    Abstract: The invention utilizes vibration control, precision manufacturing tolerances for certain components of the system, and techniques for limiting thermal expansion of components, including passive insulation and active cooling techniques, in order to enable high speed tool rotation for Friction Stir Spot Joining of Advanced High Strength Steels.
    Type: Application
    Filed: September 23, 2011
    Publication date: April 5, 2012
    Applicant: TECNARA FSW COMPANY, LLC
    Inventor: Masahiro Matsunaga
  • Patent number: 8146795
    Abstract: A method of friction welding comprises providing a first workpiece having a first weld surface and a second workpiece having a second weld surface. The first workpiece is arranged such that it tapers away from the first weld surface, the first workpiece converges in a direction away from the first weld surface. The first and second workpieces are arranged such that the first weld surface abuts the second weld surface. The first and second workpieces are oscillated relative to each other such that at least one of the weld surfaces of at least one of the workpieces moves relative to the other weld surface of the other workpiece such that the temperature increases at the weld surfaces to create a weld interface. The oscillation is stopped and the first and second weld surfaces are allowed to cool to weld the first and second workpieces together.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: April 3, 2012
    Assignee: Rolls-Royce PLC
    Inventor: Simon E. Bray
  • Patent number: 8141768
    Abstract: A method for welding and repairing cracks in metal parts is provided by subjecting the metal parts to be welded to friction stir welding and the cracks to be repaired to friction stir processing under conditions sufficient to provide a weld joint or crack repair having a preselected property or set of properties based upon the intended use of the weldment. The FSW and FSP methods are advantageous in joining and repairing metal structures and components in applications for natural gas transportation and storage, oil and gas well completion and production, and oil and gas refinery and chemical plants.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: March 27, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Steven J. Ford, Neeraj Thirumalai, James Ronald Rigby, Mark Biegler, Narasimha-Rao Venkata Bangaru, Jayoung Koo, Glen A. Vaughn, Raghavan Ayer, Douglas P. Fairchild
  • Publication number: 20120070686
    Abstract: A method of welding including forming a filler material of a first oxide dispersoid metal, the first oxide dispersoid material having first strengthening particles that compensate for decreases in weld strength of friction stir welded oxide dispersoid metals; positioning the filler material between a first metal structure and a second metal structure each being comprised of at least a second oxide dispersoid metal; and friction welding the filler material, the first metal structure and the second metal structure to provide a weld.
    Type: Application
    Filed: September 21, 2010
    Publication date: March 22, 2012
    Applicant: UT-BATTELLE, LLC
    Inventor: Weiju Ren
  • Patent number: 8132708
    Abstract: A method of performing friction stir welding is provided herein. More specifically, traditional friction stir welding requires a rotatable head that is forced against a plurality of work pieces to bond the same. The rotational and normal forces generated by the friction stir welding tool are generally reacted by a backing plate, anvil, mandrel or other mechanisms, such hardware are subject to the applied forces and are often supported with additional internal supports. Conversely, a method of performing a friction stir weld is described that omits the need for such a backing member and internal supports as it is performed using a self reacting pin tool.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: March 13, 2012
    Assignee: United Launch Alliance, LLC
    Inventors: David M. Potter, Richard K. Hansen
  • Publication number: 20120055977
    Abstract: A system and method for using Friction Stir Spot Joining (FSSJ) to join workpieces made of Advanced High Strength Steels (AHSS), wherein a first embodiment is a FSSJ tool that has no surface features, and wherein the rate of rotation of the FSSJ tool is much higher than is used in other FSW techniques to thereby reduce torque by causing plasticization of the AHSS on a small scale, and in a second embodiment, conventional FSSJ tools can be used at conventional FSSJ speeds if the FSSJ tool is manufactured from conductive tool materials having a high hardness, and heating of the FSSJ tool and/or the workpieces enhances the ability of the FSSJ tool to functionally weld the AHSS.
    Type: Application
    Filed: August 2, 2011
    Publication date: March 8, 2012
    Inventors: Russell J. Steel, Scott M. Packer, David Rosal, Michael P. Miles
  • Patent number: 8127977
    Abstract: A welding apparatus is provided for forming a weld joint between first and second elements of a workpiece. The apparatus heats the first and second elements to form an interface of material in a plasticized or melted state interface between the elements. The interface material is then allowed to cool to a plasticized state if previously in a melted state. The interface material, while in the plasticized state, is then mixed, for example, using a grinding/extruding mixer, to remove any dendritic-type weld microstructures introduced into the interface material during heating.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: March 6, 2012
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: R. Jeffrey Ding
  • Publication number: 20120052322
    Abstract: A method of bonding dissimilar metal materials each having a different melting point, including: positioning a steel member and an aluminum member to a bonding position; press-contacting a rotation tool to the steel member while the rotation tool is rotated, and inserting the rotation tool into the steel member; controlling an insertion position of the rotation tool to a position where the rotation tool does not break through the steel member; producing a friction heat at a portion between the steel member and the rotation tool; partially softening the steel member and the aluminum member by a conduction heat conducted from the friction heat thereby to allow the two members to cause a plastic flow; and partially stirring the steel member and the aluminum member by the rotation tool thereby to friction-stir weld the steel member and the aluminum member.
    Type: Application
    Filed: July 28, 2011
    Publication date: March 1, 2012
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Tomonobu HATAKEYAMA, Gouki YOTSUYA
  • Patent number: 8110054
    Abstract: A method for connecting at least two sheet-like formations, in particular at least two metal sheets with a thin material thickness for aircraft, comprises establishing butt-joint connections between the sheet-like formations by forming a joining region; mechanical processing of the sheet-like formations and/or of the joining region; mechanical and/or chemical adhesive pre-treatment of the sheet-like formations and/or of the joining region; and pasting-on at least one reinforcement element in the region of the top and/or the bottom of the joining region, wherein for the purpose of forming a second load path the width of the at least one reinforcement element is wider than the width 16 of the joining region. A connection is provided and made according to the method. A lightweight structure is also provided that comprises at least one connection according to the invention.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: February 7, 2012
    Assignee: Airbus Deutschland GmbH
    Inventors: Karsten Litzenberger, Marco Pacchione, Alexei Vichniakov
  • Patent number: 8104664
    Abstract: In a friction stir welding apparatus for overlapped joints provided with a rotor having a shoulder and a probe that is provided so as to protrude from the shoulder of the rotor and also so as to be disposed concentrically with the center axis of the rotor, a helical groove is formed in the peripheral surface of the probe, from the tip of the probe toward the shoulder, and the depth of the groove is formed so as to gradually decrease from the tip of the probe toward the shoulder.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: January 31, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Yoshinori Kato
  • Publication number: 20120018492
    Abstract: A friction stir welding method includes providing a joining tool including a friction surface, a first workpiece, and a second workpiece, and arranging the first workpiece and second workpiece in position with a first joining surface abutting a second joining surface. A friction surface of a joining tool resists at least one of the first treating surface and the second treating surface, and the first workpiece and the second workpiece cooperatively define a slot. Then positioning, rotating, and moving the joining tool to rub and stir at least one of the first workpiece and the second workpiece, thus plasticizing at least part of the first workpiece and the second workpiece to join the first workpiece and the second workpiece.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 26, 2012
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., FINE TECH Corporation, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: KOICHI NAKAGAWA, QING LIU, ISAO SHIOZAWA, TAKEO NAKAGAWA
  • Patent number: 8100316
    Abstract: The invention relates to a method for joining at least two aircraft fuselage segments (2, 3) by friction stir welding with a tool (8) generating friction heat for the partial plasticisation of an edge region (6, 7) of at least one of the two aircraft fuselage segments and a counter bearing (10) for absorbing the force exerted by the tool (8) on at least one of the two aircraft fuselage segments, wherein at least one of the two aircraft fuselage segments comprises at least one rib (17) and/or one stringer (16). In order to minimise the necessary expense incurred in association with the production aids for the FSW process, it is proposed that the at least one rib (17) and/or the at least one stringer (16) of the at least one aircraft fuselage segment (2, 3) should be used as a counter bearing (10).
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: January 24, 2012
    Assignee: Airbus Operations GmbH
    Inventors: Dirk Groβ, Robert Alexander Goehlich, Steffen Biesek, Rolf Bense
  • Patent number: 8100311
    Abstract: The invention relates to a friction stir welding head having a housing and a welding tool with a rotating welding pin and a rotating shoulder tool for welding workpieces which rest on a workpiece rest, with the shoulder tool, which rotates in synchronism with the welding pin, coaxially surrounding the welding pin. According to the invention, a first distance between a first laser rangefinder and a welding pin section 4a can be determined by means of the first laser rangefinder. This makes it possible to determine at least one change in the distance between the welding pin tip and the workpiece rest by means of a first laser rangefinder.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: January 24, 2012
    Assignee: Airbus Deutschland GmbH
    Inventor: Hartmut Ostersehlte
  • Publication number: 20120006679
    Abstract: An electrochemical anode is formed using friction stir welded (FSW) joints. A FSW joint may be formed between the bus bar and anode sheet or the lead encapsulation and anode sheet. The FSW joints may also comprise fillet and butt joints. FSW joints may also be utilized to seal the ends of the electrochemical anodes to prevent corrosion.
    Type: Application
    Filed: July 9, 2010
    Publication date: January 12, 2012
    Inventors: Timothy W. Ellis, Matthew Burr, Elton Jones
  • Publication number: 20120006883
    Abstract: The apparatus includes a welding head having a welding tool to be pressed against workpieces and a rotation drive unit to drive the welding tool to be rotated; a head drive unit to drive the welding head to be displaced, the head drive unit including a cylinder actuator having a piston rod to which the welding head is attached; a first pressure unit to supply a pressure fluid into a first chamber of the cylinder actuator; a second pressure unit to supply a pressure fluid into a second chamber of the cylinder actuator; a control unit to control pressures of respective pressure fluids supplied by the first pressure unit and the second pressure unit.
    Type: Application
    Filed: February 26, 2010
    Publication date: January 12, 2012
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Hidehito Nishida, Mitsuo Fujimoto, Mitsuhiro Kamioka, Hideki Okada