Welding Patents (Class 219/121.45)
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Publication number: 20140021174Abstract: In order to extend a lifetime of a welding tip in a simple way, a surface reinforcing layer 2 is formed by ejecting a metal powder shot onto at least an inner peripheral surface of a welding tip 1 (1, 12) formed of any material of copper, a copper alloy or ceramic-dispersed copper at an ejection velocity of 100 m/sec or higher. The metal powder shot has an average particle diameter of 40 to 150 ?m and hardness equal to or higher than the material of the welding tip 1 (11, 12). Then, a semiconductor film 3 is formed on the surface reinforcing layer 2 by further ejecting a tin powder with an average particle diameter of 10 ?m to 100 ?m having a tin oxide film formed thereon onto the surface reinforcing layer 2 at an ejection velocity of 200 m/sec or higher.Type: ApplicationFiled: April 22, 2013Publication date: January 23, 2014Applicant: FUJI KIHAN CO., LTD.Inventor: Yoshio MIYASAKA
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Patent number: 8624148Abstract: An anti-collision device for a plasma vertical cutting gun including a lifting frame of a plasma cutting machine; a connection mechanism; a fixing plate of a cutting gun fixed on the connection mechanism; a concave support plate connected with the lifting frame of the plasma cutting machine; and a proximity switch mounted on the concave support plate. The connection mechanism is mounted between the lifting frame of the plasma cutting machine and the fixing plate of the cutting gun. A contact surface between the connection mechanism and the concave support plate matches. One side of a joint plane between the connection mechanism and the concave support plate is of ferromagnetic materials and the other side is provided with a magnet, thereby attracting each other to realize a magnetic connection. The anti-collision device has comprehensive functions, convenient installation, reasonable structure, and short response time in case of impact.Type: GrantFiled: December 15, 2011Date of Patent: January 7, 2014Assignee: Wuhan Farley Plasma Cutting Sys. Co., Ltd.Inventors: Yanjun Xiong, Wei Gao, Songping Ye, Jie Dong, Lin Wang
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Patent number: 8563896Abstract: A welding system and method includes a main torch including a main electrode configured to form a first arc with a base metal; a first bypass torch including a first bypass electrode configured to form a second arc with the main electrode; and a second bypass torch including a second bypass electrode configured to form a third arc with the main electrode.Type: GrantFiled: August 15, 2012Date of Patent: October 22, 2013Inventors: Yu Ming Zhang, Jinsong Chen
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Patent number: 8546718Abstract: An electrode for a contact start plasma arc torch includes an elongated electrode body formed of an electrically conductive material. The electrode body is movable relative to the torch. A resilient element, contacting a proximal end of the electrode body, is used for imparting a separation force to the electrode body. The electrode body is adapted to overcome the separation force and engage a contact element of the torch when the torch is operated in a transferred arc mode.Type: GrantFiled: December 20, 2011Date of Patent: October 1, 2013Assignee: Hypertherm, Inc.Inventors: Jonathan P. Mather, Stephen T. Eickhoff, Jesse Roberts
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Publication number: 20130228556Abstract: A portable apparatus, particularly for plasma welding or cutting, comprising a box-like body which contains an electronic power board, a flexible torch holder hose extending from the box-like body and terminating in the torch, for plasma welding or cutting. The box-like body has an accommodation receptacle for the torch and for at least part of the torch holder hose, which is closed by a corresponding cover.Type: ApplicationFiled: November 19, 2012Publication date: September 5, 2013Applicant: SEGALA BRUNO S.R.L.Inventor: Bruno SEGALA
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Patent number: 8525068Abstract: A plasma torch 1 used in plasma-arc welding is provided with a rod-shaped electrode 10, a first cylindrical nozzle 11 which is provided to surround the electrode 10 and which injects a plasma gas and a second cylindrical nozzle 12 which is provided to surround the first nozzle 11 and which injects a shielding gas. A second injection opening 121 of the second nozzle 12 directs in a substantially parallel direction with respect to an axial direction of the electrode 10 or in a direction being away from the electrode 10, and a plurality of groove portions inclining with respect to the axial direction of the electrode 10 are formed in an outer circumferential surface of the first nozzle 11 or an inner circumferential surface of the second nozzle 12.Type: GrantFiled: September 6, 2010Date of Patent: September 3, 2013Assignee: Honda Motor Co., Ltd.Inventors: Hiroki Fujiuchi, Shinya Ohyama, Toshiyuki Horimukai
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Patent number: 8513564Abstract: A plasma welding torch that can be reduced in size more than in conventional cases. When an inert gas G such as argon gas is supplied to an outer circumferential space around a non-consumable electrode 13, a portion of the inert gas G is used as plasma gas GP that forms a plasma arc PA between the non-consumable electrode 13 and a base material 2 via a plasma orifice 51. A plasma welding torch 1 moves, maintaining this state, in the direction of the arrow shown in FIG. 4. Meanwhile, a portion of the inert gas G supplied to a gas flowing part 21 is not used as the plasma gas GP but is used as shielding gas GS and is ejected onto the base material 2 ahead in the welding direction via a shielding orifice 52. The welding on the base material 2 is performed in a state where the plasma arc PA and the base material 2 are shielded from the air by this shielding gas.Type: GrantFiled: February 14, 2011Date of Patent: August 20, 2013Assignee: Honda Motor Co., Ltd.Inventors: Katsuya Matsumoto, Jun Kitagawa, Keishi Setoda, Yusuke Muramatsu
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Patent number: 8461475Abstract: A system for the thermal processing of workpieces. In this respect, workpieces can be processed by a plasma jet or by a laser beam. The thermal processing of workpieces is done more flexibly and also less expensive in this respect. A laser processing head or a plasma processing head can be connected by a single shaft element.Type: GrantFiled: October 23, 2009Date of Patent: June 11, 2013Assignee: Kjellberg Finsterwalde Plasma und Maschinen GmbHInventors: Volker Krink, Friedrich-Wilhelm Bach, Frank Laurisch, Thomas Ruemenapp
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Patent number: 8461476Abstract: In connection with plasma tap hole welding, in which a plasma jet (7) directed towards a workpiece (8) to be welded is generated by means of a welding current applied onto an electrode (2) and a plasma gas, the plasma jet at least partly penetrating through the workpiece (9), wherein at least one electrical conductor (10, 50, 60, 61) is arranged at the exit side (8?) of the plasma jet (7), a penetration current (I2?) being measured via the electrical conductor (10, 50, 60, 61), it is suggested that the penetration current (I2) is actively modified during the welding process.Type: GrantFiled: November 30, 2009Date of Patent: June 11, 2013Assignee: Linde AktiengesellschaftInventors: Gerald Wilhelm, Erwan Slewert
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Patent number: 8378250Abstract: A bevel head attachment comprises a rotation axis normal to a cutting plane and a rotary assembly having cylindrical inner and outer barrels and a bevel arm. The bevel arm carries a tilt arm having a torch clamp. The tilt arm rotates about a tilt axis forming an acute angle with the rotation axis. A rotation drive motor operable to rotate the bevel arm about the rotation axis and a tilt drive motor operable to rotate the tilt arm about the tilt axis are located remotely from the torch clamp. The tilt drive motor is connected to the tilt arm through the outer barrel. The motors are commanded according to only two transformation equations to rotate a torch held by the tilt arm about the rotation and tilt axes to achieve planer tilt adjustment. The lightweight attachment provides unlimited rotation, and locates sensitive electronic elements away from the torch.Type: GrantFiled: November 1, 2010Date of Patent: February 19, 2013Assignee: Koike Aronson, Inc.Inventors: Robert T. Flaig, Garick J. Tischler
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Patent number: 8378251Abstract: A two-electrode arc welding device and two-electrode arc welding method are provided for performing welding with improved penetration performance using two non-consumable electrodes. In a two-electrode arc welding device, a power-supply unit outputs a straight-polarity voltage and a reverse-polarity voltage, which has a different electrical potential than the straight-polarity voltage. The straight-polarity voltage output from the power-supply unit is applied to a non-consumable electrode of a straight-polarity arc torch, whereby an arc is formed. The reverse-polarity voltage output from the power-supply unit is applied to a non-consumable electrode of a straight-polarity arc torch, whereby an arc is formed. An arc spacing distance, which is a distance between the ends of both the straight-polarity arc torch and the reverse-polarity arc torch, is set to be at least a minimum distance at which an arc will not occur therebetween (arc spacing critical distance).Type: GrantFiled: January 3, 2011Date of Patent: February 19, 2013Assignee: Honda Motor Co., Ltd.Inventors: Hiroki Fujiuchi, Toshiyuki Horimukai, Tetsuya Kodama
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Patent number: 8362390Abstract: A method of laser welding of two members by their respective edges, on a first surface of a slideway section, wherein at least a first one of said members is welded by application of two parallel laser beams from a second surface of the slideway section, with a distance between the beams approximately corresponding to the thickness of the first member, to obtain a laser transmission welding in a single run.Type: GrantFiled: June 10, 2010Date of Patent: January 29, 2013Assignee: Faurecia Sieges d' AutomobileInventor: Jean-Yves Loreau
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Patent number: 8350181Abstract: A gas distribution ring assembly for a plasma spray system includes a gas distribution ring including a plurality of openings allowing a gas to pass to an inner diameter thereof. The assembly also includes a separate positioning ring axially aligned with the gas distribution ring between the gas distribution ring and an electrically charged outlet of the plasma spray system.Type: GrantFiled: August 24, 2009Date of Patent: January 8, 2013Assignee: General Electric CompanyInventors: Joseph Garfield Albanese, Donald Joseph Baldwin, Yuk-chiu Lau, Christopher Joseph Lochner, William Patrick Rusch
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Patent number: 8338741Abstract: A device and method are provided for determining whether sufficient ground exists to perform processes such requiring the establishment of an electrical arc such arc welding or plasma cutting. The device is capable of fastening to at least one object placed in between a first contact surface and a second contact surface. The contact surfaces are composed of conductive material but separated by non-conductive material. The device further includes at least one light bulb coupled with an electrical circuit such that the electrical circuit coupled to the light bulb, broken only by non-conductive material separating the first contact surface and the second contact surface. A method of determining whether such sufficient ground exists by connecting an electrical circuit, coupled with a light bulb and broken only by the object, is also provided.Type: GrantFiled: June 9, 2009Date of Patent: December 25, 2012Inventor: Adam Ray Lunn
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Publication number: 20120261389Abstract: A hybrid welding apparatus, and a system and method for welding at least two adjacent components having a large gap of approximately 3.0 millimeters that results in a full-penetration weld is provided. The welding system includes a hybrid welder having a defocused laser beam, an electric arc welder, and at least one bridge piece adjacent to one or more of the at least two adjacent components. The defocused laser beam and the electric arc welder are arranged and disposed to direct energy onto the at least two adjacent components to create a common molten pool operable to provide a full penetration weld to bridge the gap at a high constant weld speed, thereby joining the two adjacent components with a weld.Type: ApplicationFiled: April 13, 2011Publication date: October 18, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Dechao LIN, Yan CUI, Brian L. TOLLISON, David SCHICK, Bill D. JOHNSTON, JR., Srikanth Chandrudu KOTTILINGAM
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Patent number: 8283593Abstract: A wire cleaning guide for guiding a wire in a feed direction and to clean the wire, including a gas supply nozzle for supplying plasma generating gas, a plasma generating chamber with plasma generating gas supplied from the gas supply nozzle thereto for transforming the plasma generating gas into plasma by energizing a bonding wire that passes there through to clean the wire by means of the plasma gas, and wire-feeder-side and bonding-tool-side guide holes for guiding the wire in the feed direction, the diameter of the wire-feeder-side guide hole is greater than that of the bonding-tool-side guide hole so that the outflow rate of gas after wire cleaning flowing between the wire-feeder-side guide hole and the wire is greater than that of gas after wire cleaning flowing between the bonding-tool-side guide hole and the wire.Type: GrantFiled: February 14, 2008Date of Patent: October 9, 2012Assignee: Kabushiki Kaisha ShinkawaInventors: Masayuki Horino, Kazuo Fujita
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Patent number: 8278587Abstract: A welding system and method includes a main torch including a main electrode configured to form a first arc with a base metal; a first bypass torch including a first bypass electrode configured to form a second arc with the main electrode; and a second bypass torch including a second bypass electrode configured to form a third arc with the main electrode.Type: GrantFiled: March 17, 2010Date of Patent: October 2, 2012Inventors: YuMing Zhang, Jinsong Chen
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Patent number: 8278601Abstract: A spool gun having a quick connector connectable to an electrical power source and a gas source is disclosed. A connection line extends from the spool gun and is attached to a connector. The connector both fluidly connects the spool gun to a shielding gas source and electrically connects the spool gun to a power source constructed to generate a welding-type power. Such a spool gun is quickly and efficiently connectable to the gas and power systems required for performing welding processes.Type: GrantFiled: July 12, 2010Date of Patent: October 2, 2012Assignee: Illinois Tool Works Inc.Inventor: Kenneth A. Stanzel
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Publication number: 20120241421Abstract: A welding apparatus for welding a work-piece includes an energy source configured to generate a weld in a zone of the work-piece, with the work-piece characterized by a layer. The apparatus also includes a first wheel characterized by a first circumference and a first set of protrusions disposed on the first circumference, and a second wheel characterized by a second circumference and a second set of protrusions disposed on the second circumference. Each of the first and second wheels is configured to rotate relative to the work-piece, and the first and second sets of protrusions are configured to disrupt the layer as the work-piece is traversed between the first and second wheels. The energy source generates the weld in the zone of the work-piece following the disruption of the layer. A method employing the disclosed welding apparatus is also provided.Type: ApplicationFiled: March 23, 2011Publication date: September 27, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: David Yang, Pei-Chung Wang
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Publication number: 20120234798Abstract: Disclosed is a method for affixing a metal cladding to a metal base. The method includes: heating the metal cladding and a surface of the metal base with a heating device to create a molten metal pool having molten metal cladding layered upon molten metal base material in the metal base; stabilizing a temperature gradient of the molten metal pool with a laser beam directed into the molten metal pool; and cooling the molten metal pool to affix solidified cladding to the metal base.Type: ApplicationFiled: March 15, 2011Publication date: September 20, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Dechao Lin, Yan Cui, Srikanth Chandrudu Kottilingam, David Edward Schick, Brian Lee Tollison
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Patent number: 8267489Abstract: An industrial machine assembly includes an industrial machine and a handle. The industrial machine includes an upper wall and a side wall. The side wall and upper wall cooperate to define a corner. The handle includes a grasping portion, a first flange, and a second flange. The handle is configured for attachment to the industrial machine in one of a first position and a second position. When the handle is in the first position, the first and second flanges straddle the corner such that the first flange is adjacent to the upper wall and the second flange is adjacent to the side wall. When the handle is in the second position, the first and second flanges straddle the corner such that the first flange is adjacent to the side wall and the second flange is adjacent to the upper wall.Type: GrantFiled: February 10, 2010Date of Patent: September 18, 2012Assignee: Lincoln Global, Inc.Inventors: Thomas David Willams, Bruce John Chantry
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Publication number: 20120228272Abstract: A welding apparatus for an induction motor includes a fixture operable to support a rotor and rotate the rotor about an axis of rotation of the motor, and a welding head supported adjacent the fixture and operable to weld conductor bars located about the surface of the rotor to the first shorting ring when the fixture supports the rotor. A controller controls the fixture to selectively rotate the rotor. The controller moves the welding head, the fixture, or both, so that the welding head is in a welding position, and causes the welding head to weld the conductor bars to the first shorting ring while remaining in the welding position, with the rotor rotating to create a substantially circular weld path along the first shorting ring. In some embodiments, the conductor bars are welded to both shorting rings simultaneously. A method of welding an induction motor is also provided.Type: ApplicationFiled: March 11, 2011Publication date: September 13, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Blair E. Carlson, Richard M. Kleber, Robert T. Szymanski, John S. Agapiou, David R. Sigler
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Patent number: 8212182Abstract: A portable wire feeder for providing welding wire and welding current to a welding operation includes an input electrically connected to a power source. An output is selectively electrically connected to the input to receive welding current delivered to the input from the power source and to provide the welding current and welding wire to the welding operation through a guide hose. A contactor includes a first electrical terminal, a second electrical terminal and a conductive bridge member for selectively electrically connecting the input to the output. The first electrical terminal is electrically connected to the input. The second electrical terminal is electrically connected to the output.Type: GrantFiled: March 17, 2010Date of Patent: July 3, 2012Assignee: Lincoln Global, Inc.Inventor: Nicholas G. Mormino, Jr.
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Publication number: 20120145681Abstract: A plasma torch 1 used in plasma-arc welding is provided with a rod-shaped electrode 10, a first cylindrical nozzle 11 which is provided to surround the electrode 10 and which injects a plasma gas and a second cylindrical nozzle 12 which is provided to surround the first nozzle 11 and which injects a shielding gas. A second injection opening 121 of the second nozzle 12 directs in a substantially parallel direction with respect to an axial direction of the electrode 10 or in a direction being away from the electrode 10, and a plurality of groove portions inclining with respect to the axial direction of the electrode 10 are formed in an outer circumferential surface of the first nozzle 11 or an inner circumferential surface of the second nozzle 12.Type: ApplicationFiled: September 6, 2010Publication date: June 14, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Hiroki Fujiuchi, Shinya Ohyama, Toshiyuki Horimukai
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Patent number: 8183494Abstract: In the method according to the invention for connecting a sheet metal component (3) to a component (5) consisting of cast metal, the sheet metal component (3) and the component (5) are welded to one another by means of a pulse-welding method. In particular, a sheet metal pipe (3) can thereby be welded to the port (12) of a housing (13) consisting of cast metal. This advantage may be utilized for an exhaust system with an exhaust manifold (3) and an exhaust assembly, such as a turbocharger (5).Type: GrantFiled: February 23, 2005Date of Patent: May 22, 2012Assignee: BorgWarner Inc.Inventors: Wilfried Bien, Jan Peter Elfeldt, Michael Halves, Thomas Huelsberg, Uwe Klussmann, Hildwin Kuzi, Holger Nuhn, Ralf Puenjer, Olav Reinhardt, Dirk Riewert, Alfred Riggers, Thorsten Sternal
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Patent number: 8183495Abstract: A cascade source provided with a cathode housing, a number of cascade plates insulated from each other and stacked on top of each other which together bound at least one plasma channel, and an anode plate provided with an outflow opening connecting to the plasma channel, wherein one cathode is provided per plasma channel, which cathode comprises an electrode which is adjustable relative to the cathode housing in the direction of the plasma channel, wherein the clamping provision is preferably of the collet chuck type. Also described is method for controlling the cascade source in use.Type: GrantFiled: December 14, 2010Date of Patent: May 22, 2012Assignee: OTB Solar B.V.Inventors: Martin Dinant Bijker, Leonardus Peterus Maria Clijsen, Franciscus Cornelius Dings, Remco Leonardus J. Robertus Pennings
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Patent number: 8164022Abstract: Disclosed is the design and working principle of a welding monitoring system that can monitor the spectra of zinc and iron in the plasma generated during a welding process involving zinc-coated steel. The monitoring system is capable of monitoring multiple parameters, including spectral line intensity, electron temperature, and ratio of zinc and iron composition in the plasma. The results can then be used individually or in combination to predict resulting weld quality and generate appropriate feedback control signals.Type: GrantFiled: December 6, 2007Date of Patent: April 24, 2012Assignee: The Regents of the University of MichiganInventors: Jyoti Mazumder, Ashish K. Dasgupta, Mikhail Vasilyev
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Patent number: 8158906Abstract: Conventional welding methods have the disadvantage of producing worse welded joints at the beginning of the process than in the later course of the method. The method in question uses an initializing plate on which the welding process is begun and then once a consistent quality can be achieved for the welded joint continues onto the points for repair.Type: GrantFiled: November 30, 2006Date of Patent: April 17, 2012Assignee: Siemens AktiengesellschaftInventors: Francis-Jurjen Ladru, Gerhard Reich, Helge Reymann
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Patent number: 8153932Abstract: A method and device for controlling a power source of a welding, cutting or plasma coating system is provided. The power source comprises a measuring part and a controllable clocked power part. A value correlating with a characteristic variable of the power part to be controlled is continuously measured by means of the measuring part, to obtain an electrical measured variable. The electrical measured variable is at least approximately integrated starting from a prescribed initial value over a prescribed integration time, the duration of which corresponds to one or more clock periods of the clocked power part. A measure value is continuously determined from the integration value and used to control the power part.Type: GrantFiled: December 9, 2009Date of Patent: April 10, 2012Assignee: Lorch Schweisstechnik GmbHInventor: Birger Jaeschke
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Publication number: 20120035745Abstract: A processing information acquisition system in a processing machine which feeds a processing point energy or material, the processing information acquisition system provided with a position information acquisition unit which acquires position information of a feed unit of energy or material, a feed rate control unit which receives a feed condition command of energy or material, converts the feed condition command to a control command which controls a feed of energy or material, and uses the converted control command to control a feed rate of energy or material from the feed unit, a feed rate estimation unit which acquires the control command from the feed rate control unit and calculates an estimated feed rate of energy or material which is fed to a processing point based on the control command, and an output unit which outputs the position information which the position information acquisition unit acquired and the estimated feed rate which the feed rate estimation unit calculated when the feed unit is locatType: ApplicationFiled: August 4, 2011Publication date: February 9, 2012Applicant: FANUC CorporationInventors: Atsushi MORI, Akinori Ohyama, Junichi Tezuka
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Publication number: 20110226744Abstract: The disclosure provides a method and apparatus for regulating an energy input of a pulsed arc plasma during a joining process by detecting first measurement signals for a first temporal response of emission light from an arc plasma in a first spectral range with a first photodiode, which has a sensitivity maximum at a first wavelength, detecting second measurement signals for a second temporal response of emission light from an arc plasma in a second spectral range, which is at least partially different from the first spectral range, with a second photodiode having a sensitivity maximum at a second wavelength that is different from the first wavelength, generating control signals by comparing the first measurement signals and the second measurement signals, and regulating an energy source, which is configured to provide energy in pulsed form for the arc plasma in accordance with the control signals.Type: ApplicationFiled: September 3, 2009Publication date: September 22, 2011Inventors: Dr.-Ing. Gerd Heinz, Dr.-Ing.Heinz Schopp, Dipl.-Ing. Frank Hoftmann, Gregor Gott
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Publication number: 20110210102Abstract: A plasma welding torch that can be reduced in size more than in conventional cases. When an inert gas G such as argon gas is supplied to an outer circumferential space around a non-consumable electrode 13, a portion of the inert gas G is used as plasma gas GP that forms a plasma arc PA between the non-consumable electrode 13 and a base material 2 via a plasma orifice 51. A plasma welding torch 1 moves, maintaining this state, in the direction of the arrow shown in FIG. 4. Meanwhile, a portion of the inert gas G supplied to a gas flowing part 21 is not used as the plasma gas GP but is used as shielding gas GS and is ejected onto the base material 2 ahead in the welding direction via a shielding orifice 52. The welding on the base material 2 is performed in a state where the plasma arc PA and the base material 2 are shielded from the air by this shielding gas.Type: ApplicationFiled: February 14, 2011Publication date: September 1, 2011Applicant: HONDA MOTOR CO., LTD.Inventors: Katsuya Matsumoto, Jun Kitagawa, Keishi Setoda, Yusuke Muramatsu
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Publication number: 20110163075Abstract: A two-electrode arc welding device and two-electrode arc welding method are provided for performing welding with improved penetration performance using two non-consumable electrodes. In a two-electrode arc welding device 1, a power-supply unit 11 outputs a straight-polarity voltage and a reverse-polarity voltage, which has a different electrical potential than the straight-polarity voltage. The straight-polarity voltage output from the power-supply unit 11 is applied to a non-consumable electrode 41 of a straight-polarity arc torch 14, whereby an arc is formed. The reverse-polarity voltage output from the power-supply unit 11 is applied to a non-consumable electrode 41 of a straight-polarity arc torch 15, whereby an arc is formed. An arc spacing distance L1, which is a distance between the ends of both the straight-polarity arc torch 14 and the reverse-polarity arc torch 15, is set to be at least a minimum distance at which an arc will not occur therebetween (arc spacing critical distance).Type: ApplicationFiled: January 3, 2011Publication date: July 7, 2011Applicant: HONDA MOTOR CO., LTD.Inventors: Hiroki Fujiuchi, Toshiyuki Horimukai, Tetsuya Kodama
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Patent number: 7893383Abstract: A wire bonding apparatus for manufacturing, for instance, semiconductor devices, including a cleaning case in which a microplasma generating section comprised of a plasma torch, which has a plasma nozzle 38 at the end, and capacitive coupling electrodes composed of an outer electrode and an inner electrode is fixed to the bottom of the cleaning case. The plasma nozzle is provided such that its center line is in alignment with the longitudinal center line of the capillary. Microplasma is ejected from below the capillary to clean its tip within the cleaning case. A shutter is provided on the top of the cleaning case and the wasted gas produced as a result of cleaning is exhausted out of the cleaning case through an exhaustion port of the cleaning case.Type: GrantFiled: July 16, 2007Date of Patent: February 22, 2011Assignee: Kabushiki Kaisha ShinkawaInventor: Kazuo Fujita
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Publication number: 20100276397Abstract: Electrically isolated gas cups for plasma transferred arc welding torches, plasma transferred arc welding torches including such gas cups, and related methods are disclosed. In one embodiment a gas cup includes a dielectric portion sized and configured to couple with a torch body and electrically isolate the gas cup from the torch body. In additional embodiments, a plasma transferred arc welding torch includes an anode, a cathode, a torch body coupled to the anode and the electrode, and a gas cup at least partially surrounding the anode and electrically isolated from the torch body. In further embodiments, a method of coupling a gas cup to a plasma transferred arc welding torch includes coupling a dielectric structure to a gas cup and coupling the dielectric structure to a torch body to electrically isolate the gas cup from the torch body.Type: ApplicationFiled: May 1, 2009Publication date: November 4, 2010Applicant: BAKER HUGHES INCORPORATEDInventor: David Keith Luce
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Patent number: 7807937Abstract: A system for conserving a consumable component of a plasma torch is disclosed. The system includes a controller of a plasma torch that is connected to a power source. The controller is configured to, during a single trigger actuation, delay generation of an arc after a prior arc collapses. Such a control allows the consumable components of the plasma torch to cool prior to subsequent operation.Type: GrantFiled: January 3, 2005Date of Patent: October 5, 2010Assignee: Illinois Tool Works Inc.Inventor: Joseph C Schneider
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Publication number: 20100226613Abstract: A multi-electrode system comprises a fiber support configured to hold at least one optical fiber and a set of electrodes disposed about the at least one optical fiber and configured to generate arcs between adjacent electrodes to generate a substantially uniform heated field to a circumferential outer surface of the at least one optical fiber. The electrodes can be disposed in at least a partial vacuum.Type: ApplicationFiled: March 1, 2010Publication date: September 9, 2010Applicant: 3SAE TECHNOLOGIES, INC.Inventors: Brett Clark, Robert Wiley, Jared C. Meitzler, Clyde J. Troutman
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Patent number: 7781699Abstract: A system for the efficient utilization of plasma torch post arc cooling gas includes a controller configured to automatically determine a post arc gas flow duration. The controller monitors a plasma arc parameter associated with a temperature of the plasma torch at arc termination. The controller dynamically determines the duration of post arc gas flow through the torch from the plasma arc parameter.Type: GrantFiled: March 30, 2006Date of Patent: August 24, 2010Assignee: Illinois Tool Works Inc.Inventor: Joseph C. Schneider
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Patent number: 7763823Abstract: A method and apparatus for microplasma spray coating a portion of a substrate, such as a gas turbine compressor blade, without masking any portions thereof. The apparatus includes a microplasma gun with an anode, cathode, and an arc generator for generating an electric arc between the anode and cathode. An arc gas emitter injects inert gas through the electric arc. The electric arc is operable for ionizing the gas to create a plasma gas stream. A powder injector injects powdered material into a plasma stream. A localized area of the compressor blade is coated with the powdered material without having to mask the compressor blade.Type: GrantFiled: October 29, 2004Date of Patent: July 27, 2010Assignee: United Technologies CorporationInventors: Paul H. Zajchowski, Donn Blankenship, Gary C. Shubert
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Publication number: 20100133241Abstract: In connection with plasma tap hole welding, in which a plasma jet (7) directed towards a workpiece (8) to be welded is generated by means of a welding current applied onto an electrode (2) and a plasma gas, the plasma jet at least partly penetrating through the workpiece (9), wherein at least one electrical conductor (10, 50, 60, 61) is arranged at the exit side (8?) of the plasma jet (7), a penetration current (I2?) being measured via the electrical conductor (10, 50, 60, 61), it is suggested that the penetration current (I2) is actively modified during the welding process.Type: ApplicationFiled: November 30, 2009Publication date: June 3, 2010Inventors: Gerald Wilhelm, Erwan Siewert
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Publication number: 20100084381Abstract: A process for plasma spot welding of surface-treated workpieces using a plasma torch comprises supplying a plasma-generating gas to the plasma torch, connecting a first terminal (?) of a current source to an electrode of the plasma torch, connecting a second terminal (+) of the current source to a workpiece, building up at least one plasma arc from the electrode of the torch toward the workpiece by applying electric current (I(t)) from the current source to an anode-cathode path between the electrode and the workpiece. The electric current (I(t)) is kept in a preprocessing current range (IV) in a phase I and, in a subsequent phase II, at a main processing current value (IH) having an the average value of which is higher than the average preprocessing current range (IV). Phase I is maintained at least until the at least partial evaporation of surface treatment layers of the workpieces in a joining zone.Type: ApplicationFiled: January 10, 2008Publication date: April 8, 2010Applicant: SBI PRODUKTION TECHN. ALAGEN GMBHInventors: Reinhard Indraczek, Ferdinand Stempfer
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Patent number: 7690850Abstract: An apparatus for splicing optical waveguides has a memory circuit in which data items which identify a state of the apparatus for splicing the optical waveguides are stored. The memory circuit is used to store data items which identify a state of the optical waveguides to be spliced. Stored data items indicate conditions of the environment in which a splice process has been carried out. The apparatus can be used to record a plurality of data items which can be evaluated for analysis of a splice process, in particular for an analysis of a fault which has occurred during the splice process.Type: GrantFiled: August 1, 2008Date of Patent: April 6, 2010Assignee: CCS Technology, Inc.Inventors: Rainer Matthias Kossat, Christian Heidler
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Patent number: 7615719Abstract: A portable plasma arc torch system can be used for processing materials. The system includes a replaceable or rechargeable power source and replaceable or rechargeable gas source. A controller communicates with at least one of the power source or the gas source. A plasma delivery device received via the controller current from the power source and gas from the gas source to generate a plasma arc at an output of the plasma delivery device. The plasma arc can be used to process materials such as metallic workpieces.Type: GrantFiled: September 11, 2006Date of Patent: November 10, 2009Assignee: Hypertherm, Inc.Inventor: E. Michael Shipulski
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Patent number: 7604244Abstract: An invention is provided which comprises a welding carriage having a base, rear wheel assemblies disposed at one end of the base, a first front wheel assembly attachment member disposed on a second side of the base, and a first front wheel assembly configured to removably engage with the front wheel assembly attachment member to securely couple with the base. The welding carriage may also include a second front wheel assembly attachment member disposed on a second side of the base, and a second front wheel assembly configured to removably engage with at least the at least one front wheel assembly attachment member to securely couple with the base. The carriage may also include at least two welding attachment portions, where both welding attachment portions have the same cross-sectional characteristics.Type: GrantFiled: July 17, 2007Date of Patent: October 20, 2009Assignee: Lincoln Global, Inc.Inventors: Jeffrey R Klein, Lawrence A Boehnlein, Lucian Petrila, Edward Enyedy
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Patent number: 7591293Abstract: A device and method for bonding objects to be bonded each having a metal bonding portion on a substrate, comprising cleaning means for exposing the metal bonding portions to a plasma having an energy enough to etch the surfaces of the metal bonding portions at a depth of 1.6 nm or more over the entire surfaces of the metal bonding portions under a reduced pressure and bonding means for bonding the metal bonding portions of the objects taken out of the cleaning means in an atmospheric air. By using a specific scheme, metal bonding portions after the plasma cleaning can be bonded in the atmospheric air, thereby significantly simplifying the bonding process and the whole device and lowering the cost.Type: GrantFiled: September 22, 2003Date of Patent: September 22, 2009Assignees: Toray Engineering Co., Ltd., Oki Electric Industry Co., Ltd., Sanyo Electric Industry Co., Ltd., Sharp Kabushiki Kaisha, Sony Corporation, Kabushiki Kaisha Toshiba, Fujitsu Limited, Matsushita Electric Industrial Co., Ltd., Rohm Co., Ltd., Renesas Technology Corp.Inventors: Tadatomo Suga, Toshihiro Ito, Akira Yamauchi
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Publication number: 20090214166Abstract: In positioning or aligning ends of optical fibers in relation to each other an offset distance between the fiber ends, the offset distance e.g. being the distance between predetermined reference positions in the fiber ends, is stepwise adjusted using a cascade technique. The method can be executed accurately and fast and be used e.g. in a procedure for core alignment, the predetermined reference positions then being the positions of the cores of the fiber ends such as the positions of the center lines or axes of the cores. Also, the method can be used in a procedure in which the self-focusing effect of optical fibers is used for finding the reference positions, which in this case are the positions of the center lines or axes of the total fiber ends, i.e. center lines or axes of the surfaces of the claddings of the optical fiber ends. Finally, the method can be used for the longitudinal positioning of the fiber ends in which the gap between end surfaces of the fiber ends is set to a desired value.Type: ApplicationFiled: December 29, 2006Publication date: August 27, 2009Inventors: Wei-Ping Huang, Kjell Ahlstedt
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Publication number: 20090101629Abstract: An erosion resistant torch for use in a solid free form fabrication system for manufacturing a component from successive layers of metal feedstock material. The erosion resistant torch includes a torch structure defining a torch nozzle formed of a highly conductive bulk material. The erosion resistant torch further includes a gas flow channel and an orifice defined therein. An arc electrode is disposed within the gas flow channel. An erosion resistant material is disposed between the torch nozzle and the arc electrode in the form of a coating layer or an erosion resistant insert. The erosion resistant material is formed of one of a refractory material or a ceramic material.Type: ApplicationFiled: November 29, 2007Publication date: April 23, 2009Applicant: Honeywell International, Inc.Inventor: Robbie J. Adams
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Publication number: 20080272112Abstract: To hard-solder parts to be joined along a common joint, the parts are heated by a heat source e.g. a laser beam (3). Melted solder (7) that is stored in a container (6) is then introduced into the joint. Joints can be filled with solder in this manner at higher speed and the solidified solder surface is practically devoid of pores, thus permitting the priming or painting of said parts without the need for subsequent treatment.Type: ApplicationFiled: May 20, 2005Publication date: November 6, 2008Applicant: Soutec Soudronic AGInventor: Werner Urech
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Publication number: 20080245775Abstract: An automated method for detecting the wear of a non-consumable electrode of an arc welding torch and for automatically replacing or remachining the electrode when it is eroded with a fresh electrode includes the following steps: a) the number of strikes performed by the electrode in question, and possibly the arc time of the electrode and the strike time for establishing the arc, is measured or counted during welding; b) the value of at least one of the wear-indicating parameters determined in step a) is compared with at least one preset respective reference value; and c) the eroded electrode is replaced with a fresh or sharpened electrode when the value of at least one of the wear-indicating parameters is equal to or exceeds at least the preset respective reference value.Type: ApplicationFiled: September 25, 2007Publication date: October 9, 2008Applicants: L' AIR LIQUIDE SOCIETE ANONYME POUR L' ETUDE ET L' EXPLOITATION DES PROCEDES GEORGES CLAUDE, AIR LIQUIDE WELDING FRANCEInventors: Thomas Opderbecke, Sebastien Gadrey
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Publication number: 20080217303Abstract: Optical Fiber Fusion Splice Device that includes a receiving mechanism, internal chamber, alignment mechanism and circuitry, and an optical welding module. The receiving mechanism is operable to receive a pair of optical fibers that have been prepared for splicing. An internal chamber serves to isolate the optical fibers from an external environment. An alignment circuitry and mechanism aligns the first optical fiber to the second optical fiber within the internal chamber, wherein a welding module optically welds or fuses the aligned optical fibers. This welding module may employ an arc between a pair of electrodes, or other device such as an Edison coil, to heat and fuse the optical fibers. The internal chamber may be coupled to an evacuation system or positive displacement system in order to evacuate or pump volatile or contaminant-containing gases from the internal chamber prior to fusing the aligned optical fibers.Type: ApplicationFiled: July 6, 2006Publication date: September 11, 2008Inventor: James E. Blagrave