By Shot-blasting Patents (Class 72/53)
  • Patent number: 10350681
    Abstract: A high strength titanium alloy member with superior fatigue resistance, and a production method therefor, are provided. The production method includes preparing a raw material made of titanium alloy, nitriding the raw material to form a nitrogen-containing raw material by generating a nitrogen compound layer and/or a nitrogen solid solution layer in a surface layer of the raw material, mixing the raw material and the nitrogen-containing raw material to yield a nitrogen-containing mixed material, sintering the nitrogen-containing mixed material to obtain a sintered titanium alloy member by bonding the material together and uniformly diffusing nitrogen in solid solution from the nitrogen-containing raw material to the entire interior portion of the sintered titanium alloy member, hot plastic forming and/or heat treating the sintered titanium alloy member to obtain a processed member, and surface treating the processed member to provide compressive residual stress.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 16, 2019
    Assignee: NHK SPRING CO., LTD.
    Inventors: Tohru Shiraishi, Yoshiki Ono, Yuji Araoka
  • Patent number: 10301696
    Abstract: The invention is directed to a method for improving the mechanical behavior of a metallic body (4) comprising an internal volume for a fluid and at least one threaded connecting port (6, 8) to said internal volume, the method comprising a step of treatment by autofrettage of the internal volume by applying a pressure to a liquid inside said volume. The autofrettage step comprises closing the internal volume by screwing a plug (28) to each the at least one threaded connecting port (8), so that the thread(s) of said port(s) is/are also subject to the autofrettage treatment. The invention is also directed to a body (4) resulting from such a treatment, with compressive stresses at the root of one of the most carrying turns of the thread of each of the connecting ports. The compressive stresses improve the fatigue behavior of the body.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: May 28, 2019
    Assignee: Luxembourg Patent Company S.A.
    Inventors: Stephan Sellen, Philippe Schmitz
  • Patent number: 10253383
    Abstract: The present invention is about the design and manufacturing method of constructing nano-structured lattices. The design of the four periodic two-dimensional lattices (hexagonal, triangulated, square and Kagome) is described; and the process of making nano-structured lattices is outlined in the present invention.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: April 9, 2019
    Assignee: City University of Hong Kong
    Inventors: Jian Lu, Phu Son Mai, Chun Sheng Wen
  • Patent number: 10252398
    Abstract: A fluid end having a longitudinal bore less than about 36 inches in diameter has an internal surface that is cold-worked to have compressive stresses of at least 15 ksi (103.42 MPa) beneath the metal surface up to about 40 mils (1.016 mm).
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: April 9, 2019
    Assignee: Superior Shot Peening, Inc.
    Inventors: Daniel Spinner, Van Blasingame, Albert Johnson
  • Patent number: 10202663
    Abstract: In some examples, a material may be subject to shot peening of a relatively long duration to improve cavitation erosion resistance of the material. For example, the material surface may be shot peened to cause grain reduction and an increase in hardness to a depth of 60 ?m or more, while the surface remains relatively smooth. As one example, the method may include treating a surface of austenitic stainless steel by impacting the surface with shot media for a treatment duration of 15 to 40 minutes at a shot peening intensity corresponding to an Almen strip type A intensity of 5A to 10A.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: February 12, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Lili Zheng, Wei Yuan
  • Patent number: 10161747
    Abstract: A surface texture measuring apparatus includes: a measurement sensor measuring, without contact, a surface texture of an interior wall of a cylinder portion of a measurable object while displacing in a normal direction of the interior wall at each measurement region into which the interior wall is divided in a circumferential direction of the cylinder portion; a W axis displacer displacing the measurement sensor in a W axis direction; a ? axis displacer displacing the measurement sensor in the circumferential direction, after measurement of the surface texture of a first measurement region, such that the measurement sensor faces a second measurement region adjacent to the first measurement region in the circumferential direction; and a controller adjusting a W axis direction measurement position for measuring the surface texture of the second measurement region while displacing the measurement sensor in the W axis direction.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: December 25, 2018
    Assignee: MITUTOYO CORPORATION
    Inventors: Hiroshi Sakai, Tetsuya Ito, Ken Motohashi
  • Patent number: 9846099
    Abstract: The present peening calibration unit comprises a casing, a transducer, and a transmission unit. The casing defines a top and a bottom. The transducer is positioned along at least a section of the top of the casing. The transducer generates an electric signal upon application of peening energy thereto. The transmission unit receives the electric signal generated by the transducer and transmits a digital signal representative of the received electrical signal wirelessly. The transmission unit is located inside the casing. Furthermore, a peening calibration battery pack and a peening calibration system are described.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: December 19, 2017
    Assignee: SHOCKFORM AERONAUTIQUE INC.
    Inventors: Sylvain Forgues, Brigitte Labelle
  • Patent number: 9776301
    Abstract: A plurality of rotatable small table are disposed on a rotatable large table, and a workpiece is mounted on the small tables. Above a projection range in the large table, a pressing part is provided. The pressing part is elevated and lowered by an elevating/lowering mechanism between a withdrawn position spaced above the workpiece on the small table and a pressing position for pressing the workpiece on the small table from above. Also, the pressing part is rotationally driven coaxially with a rotary shaft of the small table and in the same rotating direction and at the same rotating speed as the small table, by a third drive mechanism.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: October 3, 2017
    Assignee: SINTOKOGIO, LTD.
    Inventor: Masatoshi Yamamoto
  • Patent number: 9739695
    Abstract: A plastically deformable almen strip is held under a predetermined underwater environment in which water jet peening is carried out, and a result of providing compressive residual stress in the water jet peening is confirmed by jetting water jet to the almen strip.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: August 22, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yukio Michishita, Takahiro Ota, Nobuyuki Hori
  • Patent number: 9718166
    Abstract: A water jet peening apparatus includes: a nozzle, which is arranged in water and has a mouth from which water is jetted out; a detecting device, which is arranged in the water and detects sound in at least a part of a period during which the water is being jetted out from the mouth; and a processing device, which determines, based on a result of the detection by the detecting device, presence or absence of abnormality in the nozzle.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: August 1, 2017
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Motoyuki Fujii, Takanori Arai
  • Patent number: 9579772
    Abstract: The present invention pertains to a method of applying surface mechanical attrition treatment (SMAT) with a plurality of balls for treating surfaces of metallic alloys under a set of specific conditions in order to obtain a metal substrate with high yield strength and hardness, low cytotoxicity, high cytocompability and hemocompatibility suitable for medical implant. The plurality of balls used in the present invention comprises 316L stainless steel balls or zirconium oxide (ZrO2) balls.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: February 28, 2017
    Assignee: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventors: Jian Lu, Huaiyu Wang
  • Patent number: 9580815
    Abstract: A method and apparatus for nanocrystallizing a metal surface by laser-induced shock wave-accelerated nanoparticles. The apparatus comprises a control system, a light guiding system, a workbench control system and an auxiliary system, wherein the auxiliary system comprises an air compressor, a paint feeder device, a nanoparticle nozzle, a powder feeder device, an exhaust, a sealed working chamber and a metal nanoparticle recycler device. The method comprises the following steps: pre-processing and fixing a workpiece; activating the air compressor to feed a powder; controlling and adjusting the paint feeder device to eject a black paint; transmitting a high-power pulse laser beam; recycling excess metal nanoparticles; and rinsing non-vaporized/ionized black paint off a surface of the workpiece.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: February 28, 2017
    Assignee: JIANGSU UNIVERSITY
    Inventors: Xudong Ren, Shouqi Yuan, Yinghong Li, Liang Ruan, Yongkang Zhang, Naifei Ren, Yongzhuo Huangfu, Cheng Wang, Weifang He, Fengze Dai, Tian Zhang
  • Patent number: 9464335
    Abstract: The purpose of the present invention is to provide a method for improving fatigue strength that is capable of improving the fatigue strength of cast iron, specifically spherical graphite cast iron, to the same level as that of carbon steel subjected 10 carburizing and quenching. To this end, this method contains a step for performing first, second and third shot peenings using shot of a prescribed diameter for each on spherical graphite cast iron on which a quenching and tempering heat treatment or austempering heat treatment has been performed and tensile strength made to be 1200 MPa or more, the spherical graphite cast iron containing the following elements in the following mass percentages: C=2.0-4.0%, Si=1.5-4.5%, Mn=2.0% or less, P=O.08% or less, 8=0.03% or less, Mg=0.02-0.1%, and Cu=1.8-4.0%.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: October 11, 2016
    Assignee: UD TRUCKS CORPORATION
    Inventors: Yoshihiko Nozaki, Makoto Taguchi, Kazuhiro Hirakawa
  • Patent number: 9440329
    Abstract: A shot peening process involves the steps of providing a steel member having a surface with a Vickers hardness of 920 HV or more and projecting a shot against the steel member, the shot having a Vickers hardness of 1000 HV or more and a density of 5.5 Mg/m3 or more. The shot satisfies the relationship HVshot?0.4×HVsteel+620, where HVshot is the Vickers hardness (HV) of the shot, and HVsteel is the Vickers hardness (HV) of the surface of the steel member. The resulting steel member has an unprecedentedly high compressive residual stress of 2,200 MPa or more.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: September 13, 2016
    Assignee: Sanyo Special Steel Co., Ltd.
    Inventor: Toshiyuki Sawada
  • Patent number: 9364894
    Abstract: Disclosed is a method of processing the surface of a cavity a casting die wherein the fluidity is good even if the shape of the surface of the cavity (castings) has a complex shape, mold releasability are excellent, reprocessing is possible, and the life of the die can be prolonged. A step (A) for forming hemispherical first dimples (12) by the particles to be sprayed on the surface of the cavity (11), and a step (B) for forming second dimples (13) by the particles to be sprayed, which second dimples are smaller than the first dimples (12), are provided. A treating method (a) and a treating method (b) where either step (A) or step (B) is carried out depending on the requirements, and a method (c), where only the first dimples (12) are formed by carrying out only step (A) are also provided.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: June 14, 2016
    Assignee: J. SINTOKIOGIO, LTD.
    Inventors: Masao Hirano, Yoshitaka Horibe
  • Patent number: 9340846
    Abstract: The purpose of the present invention is to provide a method for improving fatigue strength that is capable of improving the fatigue strength of cast iron, specifically spherical graphite cast iron, to the same level as that of carbon steel subjected 10 carburizing and quenching. To this end, this method contains a step for performing first, second and third shot peenings using shot of a prescribed diameter for each on spherical graphite cast iron on which a normalizing heat treatment has been performed at 800-950° C. and tensile strength made to be 850 MPa or more, the spherical graphite cast iron containing the following elements in the following mass percentages: C=2.0-4.0%, Si=1.5-4.5%, Mn=2.0% or less, P=0.08% or less, 8=0.03% or less, Mg=0.02-0.1%, and Cu=1.8-4.0%.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: May 17, 2016
    Assignee: UD TRUCKS CORPORATION
    Inventors: Yoshihiko Nozaki, Makoto Taguchi, Kazuhiro Hirakawa
  • Patent number: 9200341
    Abstract: A method of cavitation peening a workpiece is provided. The method includes discharging a flow of fluid towards the workpiece at a pressure and a flow rate that facilitates forming a plurality of cavitation bubbles, monitoring a feedback parameter associated with the plurality of cavitation bubbles, and determining a peening intensity of the plurality of cavitation bubbles based at least partially on a value of the feedback parameter.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: December 1, 2015
    Assignee: The Boeing Company
    Inventors: Daniel Gordon Sanders, Hali T. Diep, McKay Alma Kunz, Timothy Barber, Gregory L. Ramsey, James B. Castle, Colton Reid Culbertson, Long Ly
  • Patent number: 9149911
    Abstract: The present application relates to processes for changing the composition of surfaces and the application of such processes. The process involves the introduction of a surface augmentation composition within an aerosol formed from a liquid precursor with bombarding particles in an ultrasonic shot peening apparatus.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: October 6, 2015
    Assignees: HKPB SCIENTIFIC LIMITED, SONATS SAS
    Inventors: Donncha Haverty, Brendan Kennedy, Patrick Cheppe, Vincent Olivier Jacquey Desfontaine
  • Patent number: 9073176
    Abstract: The cost for shot-peening is intended to be reduced. The method for shot-peening of the present invention comprises a first step for processing a work by shot-peening by projecting shots onto the work, and a second step for processing the work by shot-peening by projecting the shots onto the work at a speed for projecting the shots that is slower than the speed in the first step, wherein the second step uses the same shot-peening machine and same shots that have been used in the first step. By this method, an intended distribution of compressive residual stresses is obtained by the processes in the first and second steps and the surface roughness of the work is decreased by the process in the second step wherein the shots are projected at the speed that is slower than that in the first step. Further, no removal or supply of the shots and no re-setting of the conditions for the process that are related to the removal and supply of the shots are required.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: July 7, 2015
    Assignee: SINTOKOGIO, LTD.
    Inventors: Yuji Kobayashi, Toshiya Tsuji
  • Publication number: 20150135788
    Abstract: The apparatus comprises a first working unit for unwinding a coil of conductor and providing straightened conductor, and a second working unit comprising a bending device arranged to bend the straightened conductor leaving the first working unit and a rotary table on which the bent conductor leaving the bending device is laid, whereby a set of turns is formed to make the superconductive coil. The rotary table is rotatably mounted about a stationary vertical axis. The bending device is mounted so as to be translatable both in a longitudinal direction coinciding with the direction of a longitudinal axis of the straightened conductor that is fed by the first working unit to the bending device and in a transverse direction perpendicular to the longitudinal direction. The first working unit is mounted so as to be translatable, along with the bending device, in the transverse direction only.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventor: Marco Dani
  • Patent number: 9027375
    Abstract: An apparatus for shot peening blade mounting areas on a disc of a rotor includes a peening nozzle unit which streams shot peening media along a longitudinal axis. The unit includes a nozzle outlet which extends at least partially in a circumferential direction of the unit, and a deflection arrangement with a deflection area for the media. The deflection area is at least partially cone or half-hyperboloid shaped, such that the media passes the nozzle outlet over an angle range in circumferential direction after being deflected by the deflection arrangement. A method for shot peening the blade mounting areas positions the unit in a slot profile of a blade mounting area, and guides the unit along the contour of the slot profile with the nozzle outlet facing the contour of the slot profile to approximately uniformly peen the contour of the slot profile.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: May 12, 2015
    Assignees: Rolls-Royce Deutschland Ltd & Co KG, Straaltechniek International B.V.
    Inventors: Wolfgang Hennig, Marco Klijsen
  • Patent number: 9003858
    Abstract: Provided are a bending die having surface microstructures and a bending punch thereof applicable to stamping processing to bend a blank to form a shape. The bending die includes a lower die, an upper die, and a workpiece placing piece. The lower die includes a die, and the die includes a forming surface. The upper die includes a bending punch, the bending punch stamps a blank placed on the die in a back and forth stroke, and the bending punch includes a working portion coming into contact with the blank during stamping. The workpiece placing piece is disposed between the upper die and the lower die and used to position or/and press the blank placed on the die. A plurality of microstructures are disposed on the forming surface and/or on the surface of the working portion.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: April 14, 2015
    Assignee: National Kaohsiung First University of Science and Technology
    Inventors: Bor-Tsuen Lin, Chun-Chih Kuo
  • Patent number: 9003850
    Abstract: A process for producing plate springs or undulating springs wherein surface regions which are subjected to tensile stresses when the spring is under load are provided with an internal compressive stress in the boundary layer, wherein said surface regions are rollingly compressed by a ball or roller or subjected to tensile stress and compressed by shot peening.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: April 14, 2015
    Assignee: Muhr und Bender KG
    Inventors: Bernfried Hesselmann, Sven Roth, Peter Buchner, Andreas Rinsdorf, Thomas Muhr
  • Publication number: 20150082776
    Abstract: In an exhaust gas purification apparatus or other apparatuses that are supplied with ammonia generated from a urea aqueous solution and causes selective reduction and purification of nitride oxides, a shot peening treatment is applied to a welded portion of its exhaust pipe which is made of a ferritic stainless steel plate and through which exhaust gas containing ammonia and hydrogen passes. By shot peening the welded portion of the exhaust pipe, a tensile residual stress in the welded portion of the exhaust pipe can be replaced with a compressive residual stress, and further the diameter of metal crystal grains in the welded portion can be reduced. In this way, the durability of the exhaust pipe can be improved.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 26, 2015
    Inventors: Yoshihiko NOZAKI, Jouji HAGIWARA, Kazuhiro HIRAKAWA, Norihiro FUJISAWA
  • Publication number: 20150075003
    Abstract: [Task] To provide a method that makes it possible to easily, inexpensively and accurately manufacture a machined part with a simple configuration and an excellent strength. [Means for Solution] In a method for manufacturing a machined part according to the invention, a dislocation is partially introduced (S3), through shot peening, only into a surface layer of a raw material 1 in a region 1a to be machined, graphite is partially deposited (S4), through heating, only in the surface layer of the region 1a to be machined, and then, the surface layer of the region 1a where graphite is deposited is removed, through machining (S5), only by an amount corresponding to a working margin 1c, thereby manufacturing a machined part 1?.
    Type: Application
    Filed: March 5, 2012
    Publication date: March 19, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Inagaki, Masahiko Mitsubayashi, Takaaki Kanazawa, Hiroyoshi Tawa
  • Publication number: 20150068262
    Abstract: An apparatus for shot peening blade mounting areas on a disc of a rotor includes a peening nozzle unit which streams shot peening media along a longitudinal axis. The unit includes a nozzle outlet which extends at least partially in a circumferential direction of the unit, and a deflection arrangement with a deflection area for the media. The deflection area is at least partially cone or half-hyperboloid shaped, such that the media passes the nozzle outlet over an angle range in circumferential direction after being deflected by the deflection arrangement. A method for shot peening the blade mounting areas positions the unit in a slot profile of a blade mounting area and guides the unit along the contour of the slot profile with the nozzle outlet facing the contour of the slot profile to approximately uniformly peen the contour of the slot profile.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 12, 2015
    Inventors: Wolfgang HENNIG, Marco KLIJSEN
  • Patent number: 8959967
    Abstract: Controlling a flatness of a first surface of a sheet material can include: (a) determining a first surface contour of the first surface of the sheet; (b) applying compressive stresses to one or more portions of the first surface of the sheet after the determination of the first surface contour of the sheet; (c) annealing compressive stresses in one or more portions of the first surface of the sheet after the determination of the first surface contour of the sheet; (d) determining a second surface contour of the first surface of the sheet after the compressive stresses have been applied to, and annealed from, the sheet; (e) comparing the second surface contour to a threshold flatness; and (f) performing (b)-(e) one or more times until the determined second surface contour is less than the threshold flatness.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 24, 2015
    Assignee: Google Inc.
    Inventors: William Hamburgen, Michael John Bliss
  • Patent number: 8955225
    Abstract: In forming an actuator, a large end surface of a tapered roller of a tapered roller bearing is shot with minute particles of silicon carbide having a diameter of 0.5 to 100 ?m and having an angle formed by crushing, and such a surface is scraped concavely at a diameter within a range from 0.5 to 100 ?m to form a large number of concavities having a depth of equal to or greater than 1 ?m at a pitch of equal to or less than 200 ?m. The concavities are non-continuous and isolated from each other, and serve as a lubricant puddle. The concavities are formed by scraping and not by plastic deformation, and thus the surface is not hardened.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: February 17, 2015
    Assignee: NSK Ltd.
    Inventors: Masato Kobayashi, Tomoharu Saito, Shinji Fujita, Takanori Tanaka
  • Publication number: 20150033814
    Abstract: The present invention is about the design and manufacturing method of constructing nano-structured lattices. The design of the four periodic two-dimensional lattices (hexagonal, triangulated, square and Kagome) is described; and the process of making nano-structured lattices is outlined in the present invention.
    Type: Application
    Filed: August 1, 2014
    Publication date: February 5, 2015
    Inventors: Jian LU, Phu Son MAI, Chun Sheng WEN
  • Publication number: 20150013411
    Abstract: A method and system for increasing a transportation component's resistance to failure comprising shot-peening at least one area of the component to create a compressive surface layer on the component.
    Type: Application
    Filed: March 28, 2014
    Publication date: January 15, 2015
    Inventors: Richard Ruebusch, Joseph Patterson
  • Publication number: 20150017323
    Abstract: Railcar coupling knuckles having areas of improved structure, improved surface characteristics, and reduced stress under loading, and systems and methods for shot peening railcar components such as, but not limited to, coupling knuckles. Such shot-peening systems and methods may include robotic and/or fixed-position shot-peening devices equipped with shot-emitting mechanisms for expelling shot media against desired areas of a railcar component.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 15, 2015
    Applicant: Columbus Steel Castings Company
    Inventors: Richard Ruebusch, Joseph Patterson
  • Publication number: 20150013412
    Abstract: The present application relates to processes for changing the composition of surfaces and the application of such processes. The process involves the introduction of a surface augmentation composition within an aerosol formed from a liquid precursor with bombarding particles in an ultrasonic shot peening apparatus.
    Type: Application
    Filed: July 16, 2012
    Publication date: January 15, 2015
    Applicants: SONATS SAS, HKPB SCIENTIFIC LIMITED
    Inventors: Donncha Haverty, Brendan Kennedy, Patrick Cheppe, Vincent Olivier Jacquey Desfontaine
  • Patent number: 8931318
    Abstract: A device for surface-peening, especially for the ultrasound shot-peening of a component of a gas turbine, having at least one vibration means that comprises a surface that propels the peening material, and having a holding means with which a surface area of the component and the surface of the vibration means can be arranged with respect to each other is disclosed. In this context, the angular position of the surface of the at least one vibration means can be adjusted relative to the surface area of the component of the gas turbine. Moreover, a method is provided in which the angular position of the surface of the at least one vibration means can be adjusted relative to the surface area of the component.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: January 13, 2015
    Assignee: MTU Aero Engines GmbH
    Inventors: Erwin Bayer, Max Niegl, Martin Bussmann, Thomas Peschke
  • Publication number: 20140373585
    Abstract: A method of and an apparatus for shot peening an inner surface of a stainless steel tube. A set of at least two electromagnets is arranged around the stainless steel tube and has an iron core with an air gap adjacent to the stainless steel tube. At least one magnetic shot particle is provided inside the stainless steel tube. A controller controls the activation of the electromagnets according to a predetermined sequence, so as to cause the at least one magnetic shot particle to repeatedly hit the inner surface of the tube so as to shot peen the inner surface.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Inventor: Lani Ache
  • Publication number: 20140373586
    Abstract: First, a nozzle insertion process in which a nozzle is inserted into a water cooling hole having a small diameter which is provided in a back of a mold is performed. Then, an injection process in which a mixed flow of air having a pressure ranging from 0.1 MPa to 1.0 MPa with an injection particle is jetted from a leading end of a nozzle to a distal portion of the water cooling hole. As a result, a shot peening process is performed on the distal portion of the water cooling hole.
    Type: Application
    Filed: October 17, 2012
    Publication date: December 25, 2014
    Inventors: Yuji Kobayashi, Akinori Matsui
  • Publication number: 20140366600
    Abstract: A curvature retaining device (1) includes two support points (25a) that can abut against one surface of a plate-shaped workpiece W, one or more pressing points (40a) that can abut against a position of the other surface of the plate-shaped workpiece (W) between the support points (25a), and forward/backward drive means (support unit (23) and pressing unit (33)) for moving at least either the support points (25a) or the pressing points (40a) forward to and backward from the other. Preferably, the two support points (25a) abut against the one surface of the plate-shaped workpiece (W) at a first distance (Ls), the two pressing points (40a) abut against the other surface of the plate-shaped workpiece (W) at second distance (Lp) shorter than the first distance (Ls), and a middle point of the first distance (Ls) and a middle point of the second distance (Lp) match with each other.
    Type: Application
    Filed: November 16, 2012
    Publication date: December 18, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takashi Kozaki, Noriaki Fukami
  • Publication number: 20140360241
    Abstract: A plurality of rotatable small table are disposed on a rotatable large table, and a workpiece is mounted on the small tables. Above a projection range in the large table, a pressing part is provided. The pressing part is elevated and lowered by an elevating/lowering mechanism between a withdrawn position spaced above the workpiece on the small table and a pressing position for pressing the workpiece on the small table from above. Also, the pressing part is rotationally driven coaxially with a rotary shaft of the small table and in the same rotating direction and at the same rotating speed as the small table, by a third drive mechanism.
    Type: Application
    Filed: October 31, 2012
    Publication date: December 11, 2014
    Inventor: Masatoshi Yamamoto
  • Publication number: 20140356644
    Abstract: A component for a turbomachine having at least one region made of an intermetallic material which is formed from an intermetallic compound or comprises an intermetallic phase as the largest constituent. The intermetallic material is compacted and/or modified in microstructure by microplasticization at least partially at a surface or interface in a region close to the surface or interface.
    Type: Application
    Filed: May 27, 2014
    Publication date: December 4, 2014
    Applicant: MTU AERO ENGINES AG
    Inventors: André WERNER, Wilfried SMARSLY
  • Patent number: 8893538
    Abstract: Uniform nano-scale microstructures can be reliably formed on the surface layer of this metal product while still improving the surface roughness and make the surface layer robust enough not to disappear due to wear. The surface of the metal product is repeatedly subjected to instantaneous rapid heating and rapid cooling by intermittently ejecting onto the surface of the metal product shot with a mixture of three or more approximate but different particle sizes for a high ejection density, thereby forming uniform microstructures near the surface of the metal product and forming micro-diameter dimples in the metal surface.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: November 25, 2014
    Assignee: Fuji Kihan Co., Ltd.
    Inventor: Yoshio Miyasaka
  • Patent number: 8852362
    Abstract: There is provided an austenitic stainless steel pipe excellent in steam oxidation resistance. The austenitic stainless steel pipe excellent in steam oxidation resistance contains, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, and is configured so that a region satisfying the following Formula exists in a metal structure at a depth of 5 to 20 ?m from the inner surface of the steel pipe: (?/?)×?/?×100?0.3 where the meanings of symbols in the above Formula are as follows: ?: sum total of the number of pixels of digital image in region in which orientation difference of adjacent crystals detected by electron backscattering pattern is 5 to 50 degrees ?: the number of total pixels of digital image in region of measurement using electron backscattering pattern ?: analysis pitch width of electron backscattering pattern (?m) ?: grain boundary width (?m).
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: October 7, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Yoshitaka Nishiyama, Mitsuru Yoshizawa, Masahiro Seto, Katsuki Tanaka
  • Publication number: 20140259597
    Abstract: A pipe processing tool that is configured to deform the end of a pipe so that the circumferential shape of the end of the pipe generally matches the circumferential shape of an adjacent pipe end. Matching the circumferential shapes of the pipe ends is advantageous during a pipe attachment process. The pipe processing tool can include a deformation ring with a plurality of pipe deformation members. Each pipe deformation member faces radially inward and is actuatable in a radial direction toward and away from the center of the deformation ring in order to permit engagement with the pipe. Each pipe deformation member is individually and separately actuatable from the other pipe deformation members so that the circumferential shapes of the pipes can be altered by controlling suitable ones of the pipe deformation members.
    Type: Application
    Filed: April 17, 2014
    Publication date: September 18, 2014
    Applicant: LAVALLEY INDUSTRIES, LLC
    Inventors: Jason LAVALLEY, Daniel LARSON, Jesse KILDE
  • Patent number: 8776564
    Abstract: 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: Grant
    Filed: July 21, 2009
    Date of Patent: July 15, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Hiroshi Shimanuki, Tetsuro Nose
  • Patent number: 8776565
    Abstract: An evaluation method of residual stress in water jet peening includes a step of creating an analytical model including meshes according to a water jet peening (WJP) object, the shape of a nozzle, and an injection distance, a step of inputting WJP execution conditions, a step of calculating the internal pressure pBi of a cavitation bubble and a bubble number density ngi through jet flow analysis for a jet flow jetting from the nozzle, a step of calculating cavitation energy according to the internal pressure pBi of a cavitation bubble and a bubble number density ngi (S4), a step of calculating the burst energy of cavitation bubbles from the cavitation energy C, and a step of calculating the compressive residual stress of the WJP object from the collapse pressure of cavitation bubbles. Accordingly, the residual stress of the WJP object can be evaluated precisely in a shorter time.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: July 15, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Hisamitu Hatou, Noboru Saitou, Kouichi Kurosawa, Fujio Yoshikubo, Yuji Matsui, Masashi Fukaya
  • Publication number: 20140193549
    Abstract: A food holding device includes a holding bin and an optional heating component. The holding bin has a specified average surface roughness Ra on at least a portion of the surface intended to be contacted with food during storage of the food.
    Type: Application
    Filed: January 6, 2014
    Publication date: July 10, 2014
    Applicant: Restaurant Technology, Inc.
    Inventor: James C. Purgatorio
  • Publication number: 20140190231
    Abstract: There is provided a wing panel having improved formability at the time when the wing panel is curvedly formed by the peen forming method, and an aircraft main wing provided with the said wing panel. For a stringer member 20, a base part 21 is formed, and the neutral axis position N in the cross-sectional direction is located on the wing panel 11 side from the center position C in the height direction of a web part 22. When the peen forming method is carried out by projecting metal shots to a portion near a flange part 23 in the tip end portion of the stringer member 20, the tensile strain developing in the portion near a flange part 23 acts in a state in which the moment length around the neutral axis position N is kept long.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 10, 2014
    Applicant: MITSUBISHI AIRCRAFT CORPORATION
    Inventors: Hideto Motohashi, Yoshifumi Hosokawa, Toshinari Fujii
  • Patent number: 8764514
    Abstract: 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: Grant
    Filed: December 16, 2008
    Date of Patent: July 1, 2014
    Assignee: Saint-Gobain Centre de Recherches et d'Etudes European
    Inventor: Anne-Laure Beaudonnet
  • Patent number: 8739589
    Abstract: For surface strengthening of blisk blades, a blade area of the blisk is completely inserted into a water bath (13), and a multitude of high-pressure water jets are injected into the water bath which are directed bilaterally and essentially vertically—and opposite to each other—to both blade sides. Cavitation bubbles imploding near the blade surface that are generated in the water bath on the periphery of the high-pressure water jets to produce micro jets upon imploding, exerting an effect on the blade surface, creating plastically formed depressions without sharp edges. An apparatus for performing the method includes a container (3), a jetting unit (6) having parallel spaced apart water-jet tubes (4) with nozzle openings connected to a high-pressure water conduit (5) to produce the high-pressure water jets.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: June 3, 2014
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Wolfgang Hennig, Goetz G. Feldmann
  • Patent number: 8650920
    Abstract: 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: Grant
    Filed: June 6, 2008
    Date of Patent: February 18, 2014
    Assignee: MTU Aero Engines GmbH
    Inventors: Erwin Bayer, Eggert Reese, Juergen Steinwandel
  • Patent number: 8627695
    Abstract: A method for ultrasound shot-blasting by a cloud of balls set in motion through contact with a sonotrode having one metallic surface including an area of difficult access, characterized in that the surface is that of a hook axially restrained on a turbomachine blade including a groove provided between the hook and the base of the blade, and the cloud of balls is contained in a chamber encompassing the groove and the surface portion outside the groove.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: January 14, 2014
    Assignee: SNECMA
    Inventor: Ana Viguera Sancho
  • Publication number: 20140000330
    Abstract: A chamber having a water jet generation apparatus and a mesh installed inside is pushed against a surface of a peening object. A rotary vane of the water jet generation apparatus, disposed in a region in the chamber between the mesh and the chamber, is rotated to generate a water jet flowing toward the peening object in one region in the chamber, the one region is a region closer to the peening object than the mesh. A plurality of shots 4 put in the region 30A moves toward the peening object along with the water jet and collides with the surface of the peening object. After the collision, the shots move toward the mesh along with the water jet. Compression residual stress is given to the surface of the peening object with which the shots have collided. Thus, spreading of contaminants peeled off from a peening object can be prevented.
    Type: Application
    Filed: June 25, 2013
    Publication date: January 2, 2014
    Inventors: Hisamitu HATOU, Noboru SAITO, Ren MORINAKA, Fujio YOSHIKUBO, Masashi FUKAYA, Yuji MATSUI, Ryuji KIMURA