By Shot-blasting Patents (Class 72/53)
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Publication number: 20110146361Abstract: Medical devices, such as percutaneous prosthetic heart valves can include a stent or frame structure component. The stent can be shot peened, laser peened, and/or ultrasonically peened, thereby reducing surface abnormalities, improving surface appearance, and/or increasing fatigue life of the device.Type: ApplicationFiled: November 19, 2010Publication date: June 23, 2011Applicant: EDWARDS LIFESCIENCES CORPORATIONInventors: James A. Davidson, Louis A. Campbell
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Patent number: 7954348Abstract: A method of peening a surface which comprises the steps of providing a rotary peening tool having at least one rotating flap mounted on the drive shaft which is rotatably driven, measuring the speed of the drive shaft, and controlling the speed of the drive shaft to maintain a desired level. A peening apparatus is also disclosed.Type: GrantFiled: July 24, 2009Date of Patent: June 7, 2011Inventors: Sylvain Forgues, Brigitte Labelle
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Publication number: 20110126605Abstract: A bend bar is available for use in a quality control test for testing for a consistency of residual stress effects in a particular material using a given a laser peening process. The bar is composed of the particular material to be tested and has a bar length and a bar thickness. The particular material has a characteristic maximum stress penetration depth for compressive residual stresses that can be formed in using the given laser peening process. The bar thickness is chosen so as to be at least twice the characteristic maximum stress penetration depth. The bar has a test surface that extends parallel to the bar length and perpendicular to the bar thickness. After forming a spot pattern on the test surface using the given laser peening process, the deflection generated in the bar due to the compressive residual stresses induced by laser peening can then be measured and used as a quality control measurement.Type: ApplicationFiled: February 8, 2011Publication date: June 2, 2011Applicant: LSP Technologies, Inc.Inventors: Richard D. Tenaglia, Allan H. Clauer, Jeff L. Dulaney, David F. Lahrman, Steve Toller
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Publication number: 20110123820Abstract: An impact treatment method for improving fatigue characteristics of a welded joint comprising pressing an impact pin against the surface of a base metal material near a toe of a weld bead and making it move relatively to the weld line direction to apply hammer peening treatment or ultrasonic impact treatment, characterized by using as the impact pin an impact pin having a tip curvature radius of ½ or less of a thickness of the metal material and between 2 to 10 mm and, on a surface of a base metal material up to a range where a distance from the toe of the weld bead to the center of the impact treatment position is within 2.5 times the tip curvature radius of the impact pin and where the impact pin does not contact the weld metal during impact treatment, applying hammer peening or ultrasonic impact treatment so as to cause by the impact pin residual plastic deformation where an impact dent has a groove depth of 0.Type: ApplicationFiled: July 21, 2009Publication date: May 26, 2011Inventors: Hiroshi Shimanuki, Tetsuro Nose
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Patent number: 7946009Abstract: A method of manufacturing a vehicle suspension component, such as a helical coil spring, includes the step of rotating a first impeller to project ceramic peening media in a first direction toward the vehicle suspension component to peen a surface section of the vehicle suspension component. In one example, the vehicle suspension component is peened with metal peening media before peening with the ceramic peening media.Type: GrantFiled: April 17, 2007Date of Patent: May 24, 2011Assignees: MSSC US, Saint-Gobain Centre de Recherche Et d'Etudes EuropeenInventors: Jeffrey Paul Dixon, James Hall, Ryan Versluis, Joseph A. Fader, Francois-Xavier Abadie
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Patent number: 7934407Abstract: A process for producing a metallic component of a structural member or the like used in an aircraft or automobile or the like, the process including shot peening the surface of a metallic material, wherein the fatigue properties of the metallic material are improved with almost no variation in the surface roughness over the course of shot peening. Shot peening the metallic material surface uses a shot material having an average particle size of not more than 200 ?m, and the ratio of the surface roughness of the metallic material surface following the projection step relative to the surface roughness of the metallic material surface prior to the projection step is not less than 0.8 and not more than 1.5.Type: GrantFiled: March 14, 2007Date of Patent: May 3, 2011Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kazuyuki Oguri, Takahiro Sekigawa, Akiko Inoue
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Publication number: 20110094281Abstract: Disclosed is a compact shot-treatment machine that enables the quality of a shot treatment for a workpiece to be enhanced, having a tubular portion, without generating dents on the workpiece. The shot-treatment machine comprises a jig 1 having a plurality of axial members 22, each axial member to be passed completely through each tubular portion of one or more workpieces W for holding them, and is detachably mounted on the jig; an enclosure 2 for defining a projection chamber therein; a supporting means 3 for rotatably holding the jig 1 in the projection chamber; a projection device 7 for projecting shots to the workpieces W in the projection chamber; and a circulating mechanism 8 for collecting the shots projected from the projection device 7 and supplying them to the projection device 7.Type: ApplicationFiled: September 29, 2009Publication date: April 28, 2011Inventor: Tadanobu Oyama
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Publication number: 20110097973Abstract: A method for continuously removing scale from a hot-rolled carbon steel strip includes: cracking the scale on the hot-rolled steel strip; shot-blasting the cracked scale to remove the scale; deforming the hot-rolled steel strip so as to weaken the bond between scale remaining after the shot-blasting and the hot-rolled steel strip and so as to impart surface roughness to the hot-rolled steel sheet; and polishing the deformed hot-rolled steel strip to remove the remaining scale.Type: ApplicationFiled: May 19, 2009Publication date: April 28, 2011Applicant: POSCOInventors: Young-Sool Jin, Tae-Chul Kim, Soo-Hyoun Cho, Kee-Jo Jeong, Young-Ki Lee
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Publication number: 20110061432Abstract: The method of the present invention includes: a first blasting step of carrying out blasting of the surface of a metal base material, such as a shower head or a processing container, by using a blasting material composed of a non-sublimable material (e.g. alumina); and a second blasting step of carrying out blasting of the surface of the metal base material, which has undergone the first blasting step, by using a blasting material composed of a sublimable material (e.g. dry ice). The first blasting step properly roughens the surface of the metal base material so that a film, which adheres to the surface during film-forming processing, hardly peels off. In addition, the second blasting step almost fully removes the residual non-sublimable blasting material adhering to the surface of the metal base material, thereby preventing the generation of particles deriving from the residual non-sublimable blasting material falling off the metal base material.Type: ApplicationFiled: September 16, 2010Publication date: March 17, 2011Applicant: TOKYO ELECTRON LIMITEDInventors: Takashi KAKEGAWA, Kensaku Narushima
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Patent number: 7905766Abstract: A centrifugal projecting machine having a house, a driving device disposed at a first side of the housing with a flange, an impeller having a plurality of blades, wherein the impeller is connected to a driving shaft of the driving device with a hub, a distributor disposed in an inner cylindrical space of the impeller so that it is concentrically arranged in relation to the driving shaft, wherein the distributor has slit-like openings that are circumferentially disposed with substantially equal clearances, a control cage having an opening around a distal end for dispersing shot, wherein a proximal end surface of the control cage is connected to the second side of the housing, opposite its first side, around an opening for an intake disposed at its second side, wherein he control cage is disposed with a clearance between inner ends of the blades and an outer surface of the distributor and extends over the length of the impeller, and a nozzle connected to the second side of the housing to supply the opening forType: GrantFiled: September 5, 2006Date of Patent: March 15, 2011Assignee: Sintokogio, Ltd.Inventors: Kyoichi Iwata, Masakatsu Ito
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Publication number: 20110053463Abstract: Shot blasting particles are constituted by a ceramic material having an apparent relative density of more than 4.0 and less than 5.0 and comprising more than 5% of silica, as a percentage by weight based on the oxides.Type: ApplicationFiled: December 20, 2007Publication date: March 3, 2011Applicant: Saint-Gobain Centre De Recherches Et D'Etudes Euro peenInventor: Anne-Laure Beaudonnet
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Patent number: 7896983Abstract: In a method of manufacturing a hollow stabilizer, a pipe compressing step of compressing an electroseamed pipe in a temperature range of a hot state or a warm state so as to make a rate of a thickness with respect to an outer diameter between 18 and 35% is performed, and a forming step of forming the compressed electroseamed pipe in a stabilizer shape in a cold state is executed. Next, a step of applying a heat treatment to a half-finished stabilizer is performed, a shot peening step of impacting a shot on the half-finished stabilizer is performed, and a step of coating the half-finished stabilizer is performed.Type: GrantFiled: May 9, 2006Date of Patent: March 1, 2011Assignee: NHK Spring Co., Ltd.Inventors: Hiroshi Koyama, Koichi Tamatsu, Masato Sugawara, Jun Umeno, Hiroshi Machida, Hiroshi Masuya, Fumiaki Kimura, Yasuaki Tsuji, Akihiro Katsuya, Takahiro Nakamura
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Publication number: 20110041581Abstract: A make-up method for a threaded joint with a pin and a box to increase the fatigue life of the joint is provided. The method includes the step of applying a torque for making up the pin in the box until first and second abutment shoulders of the pin and the box abut. The method can also include the step of applying an additional torque to the threaded joint until a magnitude of between 50% and 90% of the yield strength of the joint material in the most stressed part of the joint is reached.Type: ApplicationFiled: August 21, 2008Publication date: February 24, 2011Applicant: TENARIS CONNECTIONS AGInventor: Nestor J. Santi
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Patent number: 7887288Abstract: A turbine blade or vane is provided. The turbine blade or vane includes an airfoil portion, a root portion arranged below the airfoil portion, a dove tail shaped securing portion arranged below the root portion have a surface including subregions that have locally different compressive residual stresses, and a convexly curved sub region arranged on the surface and adjacent to the concavely curved sub region. The concavely curved region has higher compressive residual stresses than the convexly curved region, and the level of the compressive residual stress in the concavely curved region is at least 30% of the component base material yield strength.Type: GrantFiled: January 8, 2010Date of Patent: February 15, 2011Assignee: Siemens AktiengesellschaftInventor: Walter David
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Publication number: 20110034802Abstract: A method for imaging an implantable device is described. The method may include positioning an implantable device within a patient. Ultrasonic energy may be transmitted toward the implantable device. The returning ultrasonic energy may be analyzed to determine a first characteristic of the implantable device. A method for manufacturing an implantable device is also described. The method may include selecting a first size dimension for a plurality of ultrasonically visible portions. The method may further include selecting a first spacing dimension for the plurality of ultrasonically visible portions. An implantable device may be formed. The plurality of ultrasonically visible portions may be formed into the first outer surface. An implantable device is also described. The implantable device may include a first outer surface. The first outer surface may include a first ultrasonically visible portion having a first size dimension.Type: ApplicationFiled: August 5, 2009Publication date: February 10, 2011Applicant: ABBOTT LABORATORIESInventors: Sanjay Shrivastava, Alexander Nikanorov
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Publication number: 20110030434Abstract: The present invention relates to a method for ultrasound shot-blasting by means of a cloud of balls set in motion through contact with a sonotrode having one metallic surface including an area of difficult access. It is characterized in that the surface is that of a hook (20) axially restrained on a turbomachine blade including a groove (5) provided between the hook and the base of the blade, and the cloud of balls is contained in a chamber (25) encompassing said groove and said surface portion (7) outside said groove.Type: ApplicationFiled: April 17, 2009Publication date: February 10, 2011Applicant: SnecmaInventor: Ana Viguera Sancho
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Publication number: 20110017006Abstract: The present invention is directed to a method and apparatus for processing a metallic gear comprising providing a gear, directing a first peening media at the metallic gear thereby exposing a plurality of surfaces on the metallic gear to the first peening media whereby the strength and wear properties of the teeth roots of the gear are enhanced, directing a second peening media at the metallic gear thereby exposing a plurality of surfaces on the metallic gear to the second peening media whereby the KSI of the surface of the gear is enhanced, providing a container, placing a fine finishing medium in the container, placing the gear with the fine finishing medium in the container, coupling vibrations to the container to vibrate the fine finishing medium with the wetted gear, removing the gear from the container, washing the gear and rinsing the gear with rust inhibitor.Type: ApplicationFiled: July 14, 2010Publication date: January 27, 2011Inventor: Michael J. WERN
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Patent number: 7871671Abstract: A process for producing a metallic component that includes shot peening the surface of a metallic material, wherein almost no dimensional change or roughening of the surface profile of the metallic material occurs, the iron fraction adhered to the surface of the metallic material is removed efficiently, and the fatigue properties of the produced metallic component are improved. First particles containing iron as the main component and having an average particle size of not less than 0.1 mm and not more than 5 mm are projected onto the surface of a metallic material containing a lightweight alloy, and second particles containing essentially no iron and having an average particle size of not more than 200 ?m are then projected onto the surface of the metallic material.Type: GrantFiled: April 3, 2007Date of Patent: January 18, 2011Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kazuyuki Oguri, Takahiro Sekigawa, Akiko Inoue
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Publication number: 20110008633Abstract: A process for producing a metal member that enables both the fatigue properties and the corrosion resistance of the member to be improved, a structural member that includes a thus produced metal member, and a method of repairing a metal member. The process for producing a metal member comprises a projection step of projecting particles having an average particle size of not more than 200 ?m onto the surface of a metal material comprising an aluminum alloy using compressed air or a compressed gas, and a chemical conversion treatment step of forming a film on the surface of the metal material by performing a chemical conversion treatment following the projection step.Type: ApplicationFiled: October 2, 2008Publication date: January 13, 2011Inventors: Akiko Inoue, Takahiro Sekigawa, Kazuyuki Oguri
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Publication number: 20100330385Abstract: A method for tableting surface treatment of a tableting punch or die includes provisional filming and beam irradiation steps. In the provisional filming step, a tableting surface of a base metal material 1 is subjected to shot peening using different type metal grains 2 made of a different type of metal for adhesion, or the different type metal grains 2 are adhered by a binder whereby forming a different type metal film 3 on the surface. In the beam irradiation step, after the different type metal film 3 is formed, the surface is irradiated with an electron beam 4 or laser beam as energy beam to combine the different type metal film 3 and the base metal material 1.Type: ApplicationFiled: February 7, 2009Publication date: December 30, 2010Inventors: Kazuo Sawaguchi, Taku Sawaguchi
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Publication number: 20100326157Abstract: A tip tool guide apparatus 1 includes a swivel supporting unit 20 that is supported in a water chamber 100 of a steam generator by being stretched while pressing a stationary structural member provided in the water chamber 100 and that swivels around a pivot TL, a tip tool that is connected to the swivel supporting unit 20 with a slide table 30, i.e., a movable member, and a manipulator mounted on the slide table 30 interposed therebetween and that performs processing on a surface to be processed, and a pressing member 10A that reinforces the swivel supporting unit so as to withstand the force applied to the swivel supporting unit 20 in the swiveling direction of the swivel supporting unit 20, and that is provided in the water chamber 100.Type: ApplicationFiled: February 25, 2009Publication date: December 30, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Jun Fujita, Atsushi Kamiyoshi, Osafumi Nakajima
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Publication number: 20100320662Abstract: A spring wire with hardness of 50 to 56 HRC is subjected to first and second shot peening processes within a warm working temperature range of 150 to 350° C. In the first shot peening process, the first shot of a shot size of 1.0 mm or more is used. In the second shot peening process, the second shot smaller in shot size than the first shot is used. Through these shot peening processes, compressive residual stress is imparted to the spring wire. The spring wire includes a residual stress increase part, residual stress peak part, and residual stress decrease part. In the residual stress decrease part, a part including the compressive residual stress magnitude of which is equivalent to the magnitude of the compressive residual stress at the surface of the spring wire exists at a position at a depth exceeding the permissible pit depth.Type: ApplicationFiled: March 26, 2010Publication date: December 23, 2010Applicant: NHK Spring Co., Ltd.Inventors: Akira TANGE, Hideki Okada, Isao Sumiyoshi, Mitsuhiro Sugiyama
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Publication number: 20100313988Abstract: A steel tube with excellent steam oxidation resistance and a method for producing the steel tube are provided. The steel tube contains 9 to 28% by mass of Cr, and the visual coverage of the shot peened area of the inner surface of the steel tube is 70 percent or more. The method for producing the steel tube includes shot peening the inner surface of the steel tube under the condition of a shot stream of not less than 5 kg/minute and satisfying the formula (a) shown below while rotating the steel tube and moving a shot nozzle along the length of the steel tube. The shot peened area (visual coverage) of the inner surface of the steel tube is 70 percent or more; L×r/v?1.5??(a) where L denotes a length (mm) over which shot particles from the nozzle are blasted onto the inner surface of the tube, r denotes the frequency of rotation (rpm) of the steel tube, and v denotes the speed (mm/minute) of nozzle movement along the length of the steel tube.Type: ApplicationFiled: August 20, 2010Publication date: December 16, 2010Inventor: Hiroshi Matsuo
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Publication number: 20100317260Abstract: A process for producing surface conditioned aluminum castings, comprising a step of applying to aluminum castings an alkaline surface conditioning liquid containing at least one organic builder and/or one chelating agent, wherein the alkaline surface conditioning liquid used in the step has a surface conditioning activity (CD; mol/l) in the range of 0.05?CD?2.3 and a coefficient of gloss (CE; g/mol) in the range of 2.8?CE?90.Type: ApplicationFiled: May 3, 2010Publication date: December 16, 2010Applicant: Henkel AG & Co. KGaAInventors: Hiroyuki Satoh, Masaki Watanabe, Takao Ogino
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Publication number: 20100301603Abstract: A threaded tubular connection includes a female threaded portion at a first tubular component end and a male threaded portion at a second tubular component end, the female threaded portion including a female thread, at least one female sealing surface on its inner peripheral surface, and at least one female axial abutment surface, the male threaded portion including a male thread, at least one male sealing surface on its outer peripheral surface, at least one axial abutment surface, and a lip disposed between the sealing surface and an axial abutment surface located at a free end of the threaded portion distant from the thread, the male thread being made up into the female thread such that at least one male axial abutment surface is in contact with at least one female axial abutment surface, at least one male sealing surface being in interference contact with at least one corresponding female sealing surface, the portion of the lip between the sealing surface and the axial abutment surface being radially distType: ApplicationFiled: November 3, 2008Publication date: December 2, 2010Applicants: Vallourec Mannesmann Oil & Gas France, Sumitomo Metal Industries, Ltd.Inventors: Sylvain Beigneux, Daly Daly, Bertrand Maillon, Claire Patureau, Eric Verger, Michihiko Iwamoto, Keiichi Nakamura, Masaaki Sugino, Suguru Yamaguchi
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Publication number: 20100300168Abstract: The object of the present invention is to provide a method for shot peening by which a compressive residual stress that is higher than any achieved by the conventional method can be achieved while the thickness of the processed material that is scraped is suppressed. The method is characterized in that the shot materials are shot against the processed material that has the hardness of 750 HV or more that is calculated from equations (1) to (3) below. The shot materials have Vickers hardness that is higher than the hardness of the processed material by 50 HV to 250 HV. The thickness of the processed material that is to be scraped is suppressed to 5 ?m or less. HV(m)={f(C)?f(T,t)}(1??R/100)+400×?R/100??Equation (1) f(C)=?660C2+1373C+278??Equation (2) f(T,t)=0.Type: ApplicationFiled: November 21, 2008Publication date: December 2, 2010Inventors: Ryohei Ishikura, Takashi Kano, Makio Kato, Yuji Kobayashi, Satoru Ujihashi, Kiyoshi Okumura
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Publication number: 20100294010Abstract: A shot peening apparatus 1 includes a storage container 2 that stores therein shots B for shot peening. The storage container 2 moves toward a shot-peening treated region U and shot-peens a treated region surface UP. The shot peening apparatus 1 includes an oscillator 3. An oscillating unit 4 is mounted to the oscillator 3, in order to impart kinetic energy to the shots B stored in a container inside 2I. The outer shape of the oscillator 3 is formed in a shape matching the shape of a treated region surface UP of the treated region U.Type: ApplicationFiled: March 5, 2009Publication date: November 25, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventor: Jun Fujita
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Patent number: 7832243Abstract: A shot-peening device(s) is installed on a side of a cabinet defining an ejection chamber in the cabinet. Shots ejected from the device to a workpiece fall and are conveyed in a horizontal direction by a horizontal screw conveyor positioned above a lower end of the cabinet and then conveyed upward by a vertical screw conveyor whose base end is above the lower end of the cabinet. The shots pass from an upper section of the vertical screw conveyor through a chute to reach an opening/closing gate. When the gate is opened and the shots are supplied to the device(s) for re-ejeciton, a portion of the shots is cause to overflow from the gate. The overflowed shots are caused to pass through a separator to remove impurities and then returned to the horizontal screw conveyor.Type: GrantFiled: May 19, 2005Date of Patent: November 16, 2010Assignee: Sintokogio, Ltd.Inventors: Koji Ushida, Mitsuo Ishikawa, Hiroaki Watanabe, Hideaki Kaga, Nobuyoshi Kawai, Akikazu Yokoi
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Publication number: 20100281938Abstract: The reflection portion of the reflection member is moved along the inner surface in the hole of the pipe from the entrance opening of the hole of the pipe to the exit opening of the hole thereof. In this case, the reflection portion is guided by the guide portion provided at both sides of the reflection portion. The shots, which are projected toward the inner surface in the hole of the pipe reach the reflection portion through the holes of the guide portion of the entrance side, and they are reflected toward the inner surface in the hole of the pipe. Since the shots can be reflected toward the inner surface inside in the hole of the pipe, the tendency that shots may be moved toward the inner surface outside in the hole of the curved portion can be small.Type: ApplicationFiled: November 14, 2008Publication date: November 11, 2010Applicant: NHK SPRING CO., LTD.Inventors: Akira Tange, Masato Sugawara, Isao Sumiyoshi, Ken Takahashi, Yutaka Wakabayashi, Masayoshi Kawai
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Patent number: 7807596Abstract: There are provided a coloration agent for use in ceramic articles which offers an effective reuse of shot waste and which contributes to the reduction of manufacture costs, as well as a color developing clay using the same. The coloration agent contains metal powder separated from the shot waste and uses metal oxide powder contained in the metal powder as a basic raw material. The color developing clay is prepared by admixing the coloration agent with a clay raw material.Type: GrantFiled: February 23, 2005Date of Patent: October 5, 2010Assignee: Jtekt CorporationInventor: Mitsuma Matsuda
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Publication number: 20100229613Abstract: An automated edge peener apparatus includes a peener housing, a slide carried by the peener housing, a shotpeener mechanism carried by the slide and a shot recovery system communicating with the shotpeener mechanism.Type: ApplicationFiled: March 10, 2009Publication date: September 16, 2010Inventors: Theodore J. Braun, Clifford J. Chambers, Robert E. Orth, Rory S. Olson, Bert Kopke, Vinh Q. Tran, Hali T. Diep
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Publication number: 20100221566Abstract: A process for producing a metal member having improved fatigue life via a simple process. The process for producing a metal member comprises a burr removal step of removing burrs from the corners and edges of a metal member, and a projection step, which is performed after the burr removal step, without performing a chamfering treatment, of projecting particles having an average particle size of not less than 10 ?m and not more than 400 ?m onto a surface of the metal member.Type: ApplicationFiled: June 3, 2009Publication date: September 2, 2010Inventors: Akiko Inoue, Takahiro Sekigawa, Kazuyuki Oguri
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Publication number: 20100212157Abstract: A controlled shot-peening of blisk blades (1) uses a stream of spherical shot-peening medium transported by compressed air or water. The shot is driven essentially at a right angle onto each blisk blade individually, actually simultaneously on both blade sides, and with identical impact intensity and immediately opposite on both sides in several side-by-side processing paths extending over the entire blade surface. A dual-nozzle unit (6) is linearly moveable in two directions normal to each other, and swivellable about an X and a Y axis. The unit (6) includes two preferably rectangular, essentially parallel arranged, shot-peening nozzles (7), whose spacing is settable in accordance with the blade profile, each of which has a nozzle opening situated at the same level and facing the pressure or the suction side of the respective blisk blade, and featuring identical distance to the respective blade surface during shot-peening.Type: ApplicationFiled: February 24, 2009Publication date: August 26, 2010Inventor: Wolfgang Hennig
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Publication number: 20100199736Abstract: A shot peening apparatus 1 includes: a storage container 2 that stores therein shots B impacting on a shot-peening treated region U; a vibrator 5 that accelerates the shots B; a shot outlet 4 that is formed on the storage container 2, and connected to a shot collecting passage 10 through which the shots B in a container inside 2I are collected, and through which the shots B are taken out from the container inside 2I into the shot collecting passage 10; and a shot inlet 3 that is formed on the storage container 2, and connected to a shot supplying passage 9 through which the shots B are supplied into the container inside 2I, and through which the shots B are supplied into the container inside 2I from the shot supplying passage 9.Type: ApplicationFiled: December 11, 2008Publication date: August 12, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Jun Fujita, Takeshi Yamamoto, Atsushi Kamiyoshi, Mitsuru Handa, Yoshihiro Watanabe, Kanehisa Hattori, Shogo Sasaki
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Publication number: 20100186472Abstract: A method and device for surface peening, particularly ultrasonic shot peening, of a component in the region of a passage opening is disclosed. A vibration device impinging the blasting material is disposed on one side and a counter-element is disposed on an opposite side relative to a component region having the passage opening. The counter-element is disposed at a distance relative to the corresponding side of the component region.Type: ApplicationFiled: June 6, 2008Publication date: July 29, 2010Applicant: MTU Aero Engines GmbHInventors: Erwin Bayer, Eggert Reese, Juergen Steinwandel
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Patent number: 7762113Abstract: A metallic article with improved fatigue performance and resistance to corrosive attack and stress corrosion cracking is produced by treating a first area of a metallic article with a first surface treatment that induces a specified amount of cold work. A second, sacrificial area of the metallic article in electrical communication with the first area is treated with a second surface treatment that induces an amount of cold work higher than that of the first surface treatment. Due to the differences in cold work resulting from the different surface treatments, the second area of the metallic article is less noble than the first area and is therefore more susceptible to corrosive attack. As a result, the second sacrificial area will preferentially corrode leaving the first area protected from corrosive attack. Compressive residual stresses induced in the surface of the metallic article through the surface treatments improve the fatigue performance and resistance to stress corrosion cracking.Type: GrantFiled: May 16, 2006Date of Patent: July 27, 2010Assignee: Surface Technology Holdings, Ltd.Inventor: Paul S. Prevey, III
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Patent number: 7763123Abstract: Disclosed is a hard-drawn spring which exhibits fatigue strength and sag resistance equal or superior to springs produced using an oil-tempered wire. The hard-drawn spring is produced using a steel wire containing 0.5 to 0.7 mass % of C, 1.0 to 1.95 mass % of Si, 0.5 to 1.5 mass % of Mn and 0.5 to 1.5 mass % of Cr, with the balance being Fe and inevitable impurities. In the steel wire, the number of carbides having circle-equivalent diameters of 0.1 ?m or more is 5 particles/100 ?m2 or less.Type: GrantFiled: July 22, 2009Date of Patent: July 27, 2010Assignees: Kabushiki Kaisha Kobe Seiko Sho, Suncall CorporationInventors: Sumie Suda, Nobuhiko Ibaraki, Nao Yoshihara, Shigetsugu Yoshida, Koji Harada
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Publication number: 20100173171Abstract: The present invention provides a titanium material having high-temperature oxidation resistance at high temperatures above 800° C. and an exhaust pipe made of this titanium material for an engine. A titanium alloy contains 0.15 to 2% by mass Si, has an Al content below 0.30% by mass, and has equiaxial structure having a mean grain size of 15 ?m or above. The high-temperature oxidation resistance of the titanium alloy at high temperatures above 800° C., such as 850° C., is improved by means including adding Nb, Mo and Cr in combination with Si to the titanium alloy, forming equiaxial structure of coarse grains, creating acicular structure, Si-enrichment of a surface layer of the titanium alloy, and reducing impurities including copper, oxygen and carbon contained in the titanium alloy.Type: ApplicationFiled: March 29, 2007Publication date: July 8, 2010Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Takashi Yashiki, Kenji Yamamoto, Eiichiro Yoshikawa
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Publication number: 20100125990Abstract: A method and device for the surface peening, especially ultrasonic shot-peening, of at least one partial element of a component of a gas turbine, is disclosed. The partial element, e.g., a sealing fin, and at least one surface of a vibration device impinging the blasting material are positioned relative to each other at an angle between 70° and 90° based on the direction of extension of the sealing fin.Type: ApplicationFiled: December 5, 2007Publication date: May 27, 2010Applicant: MTU Aero Engines GmbHInventors: Erwin Bayer, Max Niegl, Holger Polanetzki, Thomas Peschke, Thomas Dautl, Philipp Thuemmler
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Patent number: 7716961Abstract: A method for executing water jet peening for giving an impact force to a surface of a structure member by a crushing pressure of a water jet and cavitation and improving residual stress, or washing, or reforming said surface, wherein said water jet peening is executed so as to make a natural frequency of oscillation of said structure member and a excitation frequency of oscillation of water jet peening different from each other.Type: GrantFiled: August 27, 2008Date of Patent: May 18, 2010Assignee: Hitachi-GE Nuclear Energy, Ltd.Inventors: Hisamitu Hatou, Noboru Saitou, Ren Morinaka, Tomohiko Motoki, Tadashi Iijima, Yuichi Koide, Jun Kashiwakura
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Patent number: 7712216Abstract: A restoration process for restoring surface porosity defects resulting from the casting process in metal cast products. The areas of a cast product having surface porosity defects are identified and the areas not containing surface porosity defects are masked using an adhesive, reusable, rubberized mask. The masked surface is subsequently cleaned and a metal spray is applied to the surface porosity defects. The mask is removed and the restored surface porosity defects are hand finished to create a cast product having less than 0.05% surface porosity.Type: GrantFiled: December 13, 2006Date of Patent: May 11, 2010Assignee: Brunswick CorporationInventors: Douglas M. Woehlke, Raymond J. Donahue, Kevin R. Anderson
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Patent number: 7703312Abstract: The inventive method discloses the local, adapted and controlled introduction of internal compressive stress in convex and concave regions, such as the root region of turbine blades, by means of at least two pressure generators.Type: GrantFiled: December 15, 2004Date of Patent: April 27, 2010Assignee: Siement AktiengesellschaftInventor: Walter David
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Patent number: 7690234Abstract: A tip tool guide apparatus is brought into a water chamber of a steam generator of nuclear power equipment, and guides a tip tool, such as a shot peening head, along a necessary region. For this purpose, a tip tool guide apparatus 1000 is composed of a swivel support portion 100, a slide table 200, and a manipulator 300. The swivel support portion 100 is self-supported and fixed within the water chamber, and turns the slide table 200 connected thereto. The slide table 200 connects the manipulator 300, and moves the manipulator 300 slidingly in a fore-and-aft direction. The manipulator 300 grasps the tip tool at its leading end. For bringing into the water chamber, the swivel support portion 100, the slide table 200, and the manipulator 300 are separated from each other, brought in individually, and assembled within the water chamber to constitute the tip tool guide apparatus 1000.Type: GrantFiled: July 9, 2007Date of Patent: April 6, 2010Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Norimasa Mori, Hironori Onitsuka, Jun Fujita, Takahiro Ohta, Yasumi Nagura, Yoshimasa Tukamoto, Osafumi Nakajima
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Patent number: 7685855Abstract: A vertically oscillating working device 2 has a body to be oscillated 23 having an inner space that is formed by a cover member 21 and a vehicle wheel 22, which is a body to be worked, and receives working materials 25 in it and also has oscillating means for vertically oscillating the body to be oscillated 23. The working materials 25 are allowed to collide with the vehicle wheel 22 by the oscillation, and thereby the vehicle wheel 22 is worked. With the working device 2, a casting can be oscillated together with hardening materials, and excellent mechanical properties can be uniformly added to a predetermined portion of the casting by the oscillation without changing the position of the casting.Type: GrantFiled: March 30, 2007Date of Patent: March 30, 2010Assignee: Asahi Tec CorporationInventors: Matsuo Suzuki, Shinichirou Azuma, Takayuki Sakai, Kiyomi Hagita, Atsurou Yamamoto
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Publication number: 20100075122Abstract: A high-energy treated cutter comprising a substrate having a top surface, an outer region, and an inner core and a wear resistant layer coupled to the top surface. The high-energy treatment alters the substrate's physical properties so that the inner core provides greater toughness and the outer region provides greater hardness, and greater abrasion resistance. The layer is protected prior to commencement of the treatment. In one embodiment, a cover is positioned to surround the layer and then the cutter undergoes treatment, wherein the cutter is subjected to impact forces with other cutters. In another embodiment, the cutter is positioned within a recess formed in a tray table, thereby providing protection to the layer. The cutter is secured in place via vacuum, glue, or weight. A spray nozzle applies shot material directed to the substrate of the cutter, thereby applying the impact forces to alter the substrate's properties.Type: ApplicationFiled: September 9, 2009Publication date: March 25, 2010Applicant: Varel International lnd., L.P.Inventors: Michael R. Reese, Kelly O. Malone
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Patent number: 7677070Abstract: A method of shot peening in which with respect to a carburized and quenched metal part, only its surface abnormal layer detrimental to the fatigue strength thereof is scraped without scraping of the martensitic structure underlying the surface abnormal layer, namely, in which the fatigue strength can be rendered stable and enhanced without surface cracking. As bombardment shot, use is made of a shot with hardness higher than that (first hardness) of the surface abnormal layer occurring at a surface layer portion of metal part prior to shot peening but lower than that (second hardness) of the martensitic structure.Type: GrantFiled: June 12, 2006Date of Patent: March 16, 2010Assignee: Sintokogio, Ltd.Inventor: Yuji Kobayashi
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Patent number: 7677069Abstract: A threaded joint for an oil well pipe in which a conventional threaded joint for an oil well pipe is improved so that sufficient fatigue fracture strength is secured, and a method for manufacturing the same are provided. An axial-direction residual stress of a threaded bottom part is set to ?400 MPa or less as a value of X-ray stress analysis between a surface and a part with a depth of 40 ?m.Type: GrantFiled: February 1, 2005Date of Patent: March 16, 2010Assignee: Sumitomo Metal Industries, Ltd.Inventor: Jun Maeda
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Patent number: 7673486Abstract: The invention relates to a peening chamber for surface peening, in particular for ultrasonic shot peening of gas turbine components (10), which, at least with a component region (20) comprising the surface to be treated, are to be arranged within a chamber wall (12), which spatially defines the peening chamber, wherein at least one wall region (26, 36, 48) of the chamber wall (12) is designed to be adjustable in order to vary the geometry of the peening chamber.Type: GrantFiled: February 15, 2007Date of Patent: March 9, 2010Assignee: MTU Aero Engines GmbHInventors: Erwin Bayer, Philipp Thuemmler
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Patent number: 7669449Abstract: A method may be present for sending shot onto a surface. A stream of shot may be directed into an inlet of a nozzle. The stream of shot may be redirected to form a plurality of streams of shot within the nozzle. The plurality of streams of shot may be directed out of a plurality of outputs of the nozzle.Type: GrantFiled: August 5, 2008Date of Patent: March 2, 2010Assignee: The Boeing CompanyInventors: Wilfred A. Sundstrom, Brian K. Kopp
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Publication number: 20100043512Abstract: A device for surface peening, in particular for ultrasonic shot peening, of a component of a gas turbine, having at least one vibration device that includes a surface that impinges the blasting material, and having a holding device by which a surface area of the component can be positioned relative to the surface of the vibration device, the surface of the vibration device being subdivided into at least two adjacent partial surfaces, each including an overlapping part by which a part of the surface area of the component can be treated by blasting material impinged both by the one and by the other partial surface.Type: ApplicationFiled: December 5, 2007Publication date: February 25, 2010Inventors: Erwin Bayer, Max Niegl, Holger Polanetzki, Thomas Peschke, Thomas Dautl, Philipp Thümmler