Abrasive Article Produced Patents (Class 205/110)
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Patent number: 11865622Abstract: A method includes applying a material coating to a surface of a machine component, wherein the material coating is formed from a combination of a hardfacing material, aluminum-containing particles, and a braze material. The method also includes thermally treating the material coating at a temperature to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material, and the braze material is configured to facilitate binding between the material coating and the surface of the machine component.Type: GrantFiled: August 30, 2021Date of Patent: January 9, 2024Assignee: General Electric CompanyInventors: Surinder Singh Pabla, Srikanth C. Kottilingam, David Vincent Bucci, Biju Dasan
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Patent number: 11826873Abstract: Apparatus and method for removing material from the susceptor of a batch processing chamber are described. The apparatus comprises a polishing tool including a rotatable platen positioned above the susceptor. A method comprises contacting material deposited on the susceptor with the rotatable platen to remove the material from the susceptor.Type: GrantFiled: August 24, 2020Date of Patent: November 28, 2023Assignee: Applied Materials, Inc.Inventors: Vijayabhaskara Venkatagiriyappa, Nitin Bhargav, Tae Kwang Lee
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Patent number: 11673194Abstract: A slidable component including a wear-resistant coating includes a slidable component, and a wear-resistant coating provided on a slide surface of the slidable component. The wear-resistant coating includes metal particles deposited on the side surface of the slidable component, and containing Ni, Co and Cr, and a first oxide layer covering surfaces of the metal particles, containing an Al oxide as its main component, and containing a Y oxide.Type: GrantFiled: April 10, 2019Date of Patent: June 13, 2023Assignee: IHI CorporationInventors: Hiroki Yoshizawa, Mitsutoshi Watanabe, Yukihiro Shimoda
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Patent number: 11536151Abstract: An abrasive coating system for a substrate of an airfoil in a turbine engine high pressure compressor, comprising a plurality of grit particles adapted to be placed on a top surface of the substrate; a matrix material bonded to the top surface; the matrix material partially surrounds the grit particles, the matrix material consisting of unalloyed chromium and unalloyed aluminum distributed throughout the matrix material, wherein the grit particles extend above the matrix material relative to the top surface; and a film of oxidant resistant coating applied over the plurality of grit particles and the matrix material.Type: GrantFiled: April 24, 2020Date of Patent: December 27, 2022Assignee: Raytheon Technologies CorporationInventor: Christopher W. Strock
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Patent number: 11300005Abstract: A masking system for a turbine including a first quantity of blades attached to a rotor and arranged adjacent one another to define a blade row with each blade including a blade root, includes a second quantity of center plates. Each center plate is disposed between two adjacent blades and includes a resilient member in contact with each of the two adjacent blades, and a first attachment member operable to attach the center plate to the rotor. The system includes a third quantity of side covers, each side cover positioned adjacent the blade root of one of the blades and connected to one of the center plates, each side cover including a resilient member positioned to surround a portion of the adjacent blade root, and a second attachment member operable to attach the side cover to the rotor.Type: GrantFiled: February 15, 2019Date of Patent: April 12, 2022Assignee: Siemens Energy, Inc.Inventors: Michael R. Vindler, Michael A. Hall
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Patent number: 11078588Abstract: A method for forming an abrasive surface includes applying an electric current through a plating solution so as to cause an abrasive grit to be deposited onto a workpiece and varying a waveform of the electric current while building up a matrix material at least partially around the abrasive grit.Type: GrantFiled: January 9, 2017Date of Patent: August 3, 2021Assignee: Raytheon Technologies CorporationInventors: Nathan T. Martel, Thomas R. Hanlon
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Patent number: 10711622Abstract: A blade includes a blade body extending from a blade root to an opposed blade tip surface along a longitudinal axis. The blade body defines a pressure side and a suction side. The blade body includes a cutting edge defined where the tip surface of the blade body meets the pressure side of the blade body. The cutting edge is configured to abrade a seal section of an engine case. A method for manufacturing a blade includes forming an airfoil with a root and an opposed tip surface along a longitudinal axis, wherein the airfoil defines a pressure side and a suction side. The method also includes forming a cutting edge where the tip surface of the airfoil meets the pressure side of the airfoil.Type: GrantFiled: April 2, 2018Date of Patent: July 14, 2020Assignee: RAYTHEON TECHNOLOGIES CORPORATIONInventors: Changsheng Guo, Christopher W. Strock
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Patent number: 10428437Abstract: Disclosed is process for producing a wear-resistant coating on a component. The process comprises providing an electrolyte which contains Co and/or Ni, dispersing first particles comprising hard material particles and/or slip material particles in the electrolyte, dispersing second particles comprising metal alloy particles in which the metal alloy comprises chromium and aluminum in the electrolyte, providing a component to be coated in a bath of the electrolyte which has first and second particles dispersed therein, and electrodepositing a matrix of Co and/or Ni with incorporated first and second particles on the component. A correspondingly produced wear-resistant coating is also disclosed.Type: GrantFiled: September 12, 2014Date of Patent: October 1, 2019Assignee: MTU AERO ENGINES AGInventors: André Werner, Josef Linska
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Patent number: 9683452Abstract: A turbine for a gas turbine engine comprising at least one turbine stator and one turbine rotor, said turbine stator comprising at least one inner annular platform, said inner platform comprising a radial wall delimiting at least one cavity between the turbine stator and the turbine rotor, wherein the turbine rotor comprises at least one elongate element positioned substantially axially and defining a sealing baffle in said cavity, and in that the turbine stator comprises at least one element made of abradable material designed to engage with said elongate element of the turbine rotor so as to form a labyrinth seal.Type: GrantFiled: December 19, 2013Date of Patent: June 20, 2017Assignee: SNECMAInventors: Florent Pierre Antoine Luneau, Alain Dominique Gendraud, Patrick Joseph Marie Girard, Sebastien Jean Laurent Prestel
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Patent number: 9550267Abstract: A tool for use during the abrasive flow polishing of an airfoil cluster in an abrasive flow machine is described. The tool may comprise a body and prongs extending from the body. Each prong of the tool may be configured to insert between an adjacent pair of airfoils of the airfoil cluster to create at least one channel therebetween. The channel may allow the flow of an abrasive media therethrough.Type: GrantFiled: December 19, 2013Date of Patent: January 24, 2017Assignee: UNITED TECHNOLOGIES CORPORATIONInventors: Micah Beckman, David Krzysztof Masiukiewicz
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Patent number: 9517547Abstract: The disclosed cemented carbide base outer blade cutting wheel comprises a base in the form of an annular thin disc of cemented carbide, and a blade section on the outer periphery of the base. The blade section contains: diamond and/or CBN abrasive grains pre-coated with a magnetic material; a metal or alloy bond formed by electroplating or electroless plating for bonding abrasive grains together and to the base; and a metal or alloy binder having a melting point of up to 350° C. infiltrated between abrasive grains and between abrasive grains and the base. The method for manufacturing said outer blade cutting wheel is also disclosed.Type: GrantFiled: November 28, 2011Date of Patent: December 13, 2016Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masaki Kasashima, Takehisa Minowa, Harukazu Maegawa, Yoshifumi Nagasaki
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Patent number: 9399918Abstract: A blade for a continuous-flow machine is disclosed, especially an aircraft engine, whereby, starting from the middle section, the cross section of the blade tip is reduced with respect to the middle section, at least over a front partial section in the direction of the leading edge and over at least a rear section in the direction of the trailing edge, and a continuous-flow machine having at least one row of blades including such blades is also disclosed.Type: GrantFiled: August 8, 2013Date of Patent: July 26, 2016Assignee: MTU Aero Engines GmbHInventors: Johann Geppert, Peter Eibelshaeuser, Heinz Rauschmair
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Patent number: 9242342Abstract: A manufacture includes a substrate, a reinforcement layer over the substrate, and abrasive particles over the substrate. The abrasive particles are partially buried in the reinforcement layer. Upper tips of the abrasive particles are substantially coplanar.Type: GrantFiled: March 14, 2012Date of Patent: January 26, 2016Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Bo-I Lee, Huang Soon Kang, Chi-Ming Yang, Chin-Hsiang Lin
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Patent number: 8753412Abstract: An outer blade cutting wheel comprising an annular thin disc base of cemented carbide and a blade section is manufactured by disposing permanent magnet pieces on the side surfaces and inward of the outer periphery of the base to produce a magnetic field, providing magnetic coated diamond and/or CBN abrasive grains such that the magnetic field may act on the grains, causing the grains to be magnetically attracted to the base outer periphery, and electroplating or electroless plating whereby the abrasive grains are bound to the base outer periphery to form the blade section.Type: GrantFiled: April 29, 2010Date of Patent: June 17, 2014Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaki Kasashima, Yuhito Doi, Harukazu Maegawa, Takehisa Minowa
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Publication number: 20140147242Abstract: A seal system, for an apparatus that includes a rotatable portion with airfoils coupled thereto and a stationary portion with an inner surface, includes an abradable portion including at least one abradable layer of an abradable material formed over the inner surface. The seal system also includes an abrading portion disposed over at least a portion of a substrate of the airfoil. The abrading portion includes at least one abrading layer formed on at least a portion of the substrate and a plurality of abrasive particles embedded within the abrading layer. The plurality of abrasive particles includes at least one of substantially all of one of tantalum carbide (TaC), aluminum oxide (Al2O3), and ziconia (ZrO2), cubic boron nitride (cBN) and Al2O3 in predetermined ratios, cBN, Al2O3 and ZrO2 in predetermined ratios, Al2O3 and ZrO2 fused together in predetermined ratios, and TaC and Al2O3 in predetermined ratios.Type: ApplicationFiled: November 28, 2012Publication date: May 29, 2014Applicant: NUOVO PIGNONE S.R.L.Inventors: Farshad Ghasripoor, Iacopo Giovannetti, Massimo Giannozzi, Krishnamurthy Anand, Nuo Sheng, Nicole Barbara Piche, Luc Stephane LeBlanc, Wayne Charles Hasz, Warren Arthur Nelson, Paul Matthew Thomas, Dennis Michael Gray
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Publication number: 20140044527Abstract: A protective coating for a surface exposed to hot gas flow comprises a thermal layer, a conducting layer and an abrasive layer. The thermal layer comprises alumina having a sufficient amount of impurities to lower the thermal layer thermal conductivity. The layer is formed from a powder having a thermal conductivity no more than 10 BTU in/hr ft2 ° F., and overlies the surface. The conducting layer overlies the thermal layer. The abrasive layer comprises abrasive particles bonded in a metal matrix that is electroplated onto the conducting layer.Type: ApplicationFiled: August 13, 2012Publication date: February 13, 2014Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Joseph Parkos, Melvin Freling
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Patent number: 8523966Abstract: The surface of cutters for dentistry is rendered passive to electroplating by immersion in a concentrated aqueous solution of nitric acid for a certain period of time. This is followed by painting a length including the surface marked out by the slots, the surface inside the slots and the surface at the tip, using an electrically insulating paint resistant to acids. Each cutter is then ground using a grinding wheel with rotating disk having an abrasive edge shaped like the continuous profile of the painted surface. Grinding removes the paint together with a micrometric layer of metal from the surface except for that inside the slots. The shank is ground and painted for a length adjacent to the slots.Type: GrantFiled: November 18, 2008Date of Patent: September 3, 2013Assignee: North Bel International SrlInventor: Fabio Cantoni
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Publication number: 20130174493Abstract: An outer blade cutting wheel (1) comprising a base and a blade section (11) of metal or alloy-bonded abrasive grains is dressed by clamping the cutting wheel between a pair of circular jigs (2) such that the blade section (11) projects beyond the jigs, immersing the cutting wheel in an electropolishing liquid, positioning counter electrodes (4, 5, 6) relative to the blade section, and effecting electropolishing for thereby removing part of the metal or alloy bond and chips received in chip pockets until abrasive grains are exposed on the blade section surface.Type: ApplicationFiled: January 3, 2013Publication date: July 11, 2013Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventor: Shin-Etsu Chemical Co., Ltd.
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Publication number: 20130074820Abstract: A fret saw includes a cutting wire and fixed abrasive grains provided on the cutting wire by electroplating. Each of the fixed abrasive grains includes a core and a hard film coated on the core. The core is 1 to 60 micrometers in diameter. The core is made of a material selected from the group consisting of a Ti metal and a Ti alloy. The hard film is 1 to 40 micrometers thick. The hard film covers about 30% to 90% of the surface of the core.Type: ApplicationFiled: September 22, 2011Publication date: March 28, 2013Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National DefenseInventors: Chien-Chih Kung, Ching-Yu Tso, Shang-Wanq Yeh, Hsiou-Jeng Shy
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Publication number: 20130048503Abstract: A method for repairing a blade forming a cathode and having a surface to be coated defining a critical area, utilizing an anode, an electrolyte bath including insoluble particles, and a mounting on which the blade is mounted in a working position relative to a reference wall. The mounting is placed in the bath, and the particles and the metal of the anode are co-deposited to form the coating on the surface to be coated. The anode is typically placed facing the critical area and the mounting includes a mechanism for monitoring current lines to obtain a coating with a relatively constant, predetermined thickness for the critical area, that gradually falls to a value of substantially zero along edges of the coating.Type: ApplicationFiled: December 28, 2010Publication date: February 28, 2013Applicants: SNECMA, PRAXAIR SURFACE TECHNOLOGIES INC.Inventors: Justine Menuey, Frederic Braillard, John Foster, Stephen Owens, Alan Taylor, Martin Chatterney
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Patent number: 8357217Abstract: A method and apparatus for making a fixed abrasive grain wire includes, at first, inserting a wire through a sleeve that includes at least one aperture defined therein. Then, both of the wire and the sleeve are located in electroplating or electro-less plating liquid that includes abrasive grains blended therein. Finally, electroplating or electro-less plating is executed to fix some of the abrasive grains to the wire.Type: GrantFiled: May 30, 2011Date of Patent: January 22, 2013Assignees: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National DefenseInventors: Hong-Ting Huang, Chin-Yu Tso, Shang-wanq Yeh, Hsiou-Jeng Shy
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Publication number: 20120304546Abstract: A method and apparatus for making a fixed abrasive grain wire includes, at first, inserting a wire through a sleeve that includes at least one aperture defined therein. Then, both of the wire and the sleeve are located in electroplating or electro-less plating liquid that includes abrasive grains blended therein. Finally, electroplating or electro-less plating is executed to fix some of the abrasive grains to the wire.Type: ApplicationFiled: May 30, 2011Publication date: December 6, 2012Applicant: Chung-Shan Institute of Science abd Technology, Armaments, Bureau, Ministry of National DefenseInventors: Hong-Ting Huang, Ching-Yu Tso, Shang-wanq Yeh, Hsiou-Jeng Shy
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Patent number: 8021721Abstract: A method of modifying a bottomhole assembly that includes metal plating at least a portion of a bottomhole assembly, wherein the metal-plating comprises superabrasive nanoparticles is disclosed.Type: GrantFiled: May 1, 2007Date of Patent: September 20, 2011Assignee: Smith International, Inc.Inventor: Anthony Griffo
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Patent number: 7927390Abstract: An aqueous suspension liquid of finely divided diamond particles comprising 0.05 to 160 parts by weight of a finely divided diamond particles in 1000 parts of water, wherein; (i) the finely divided diamond particles have an element composition consisting mainly of 72 to 89.5% by weight of carbon, 0.8 to 1.5% of hydrogen, 1.5 to 2.5% of nitrogen, and 10.5 to 25.0% of oxygen; (ii) and, almost all of said diamond particles are in the range of 2 nm to 50 nm in diameters thereof (80% or more by number average, 70% or more by weight average), (iii) and, said finely divided diamond particles exhibit a strongest peak of the intensity of the Bragg angle at 43.9° (2?±2°), strong and characteristic peaks at 73.5° (2?±2°) and 95° (2?±2°), a warped halo at 17° (2?±2°), and no peak at 26.5°, by X-ray diffraction (XRD) spectrum analysis using Cu—K? radiation when dried, (iv) and, specific surface area of said diamond particles when dry state powder is not smaller than 1.Type: GrantFiled: August 3, 2009Date of Patent: April 19, 2011Assignee: Tadamasa FUJIMURAInventors: Tadamasa Fujimura, Masato Sone, Valeri Yu Dolmatov, Shigeru Shiozaki
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Publication number: 20100266392Abstract: A protective coating for a surface exposed to hot gas flow comprises a thermal layer, a conducting layer and an abrasive layer. The thermal layer comprises stabilized zirconia, and overlies the surface. The conducting layer overlies the thermal layer. The abrasive layer comprises abrasive particles bonded in a metal matrix that is electroplated onto the conducting layer.Type: ApplicationFiled: April 17, 2009Publication date: October 21, 2010Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Joseph J. Parkos, JR., Melvin Freling
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Publication number: 20100150730Abstract: The tips of gas turbine engine turbine rotor blades are provided with an abrasive layer and the abrasive layer comprises chromised silicon carbide grit protruding from a layer of material. In particular the abrasive layer comprises a mixture of cubic boron nitride grit and chromised silicon carbide grit and the cubic boron nitride grit and the chromised silicon carbide grit protruding from the layer of material. The cubic boron nitride grit has a greater dimension than the chromised silicon carbide grit. The cubic boron nitride grit cuts the majority of a track in an abradable structure and then the chromised silicon carbide grit provides any additional cutting of the abradable structure.Type: ApplicationFiled: November 6, 2009Publication date: June 17, 2010Applicant: ROLLS-ROYCE PLCInventors: Christopher Sellars, Matthew Hancock
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Patent number: 7731832Abstract: A grinding wheel having hollow particles, along with abrasive grains, fixed by a bonding material. The abrasive grains may be diamond grains. The hollow particles may consist essentially of silica. The bonding material may be electrodeposited nickel.Type: GrantFiled: November 13, 2006Date of Patent: June 8, 2010Assignee: Disco CorporationInventor: Takashi Yamaguchi
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Publication number: 20090042494Abstract: A pad conditioner of semiconductor wafer polishing apparatus and a pad conditioner manufacturing method thereof are provided with a uniform conditioning for a polishing pad of a polishing apparatus, the polishing apparatus being for evenly planarizing a metal layer formed on the surface of wafer in a semiconductor device manufacturing processor. The pad conditioner may include a substrate constructed of a flat plate of disk shape, a coating part formed with a given thickness on the substrate, and a plurality of protrusion parts formed on the coating part, the plurality of protrusion parts having a plurality of polishing members based on the same size in a predetermined grouping or pattern.Type: ApplicationFiled: August 6, 2008Publication date: February 12, 2009Inventors: Sung-Taek Moon, Kyoung-Moon Kang, Bong-Su Ahn, Nam-Soo Kim, Gi-Sik Hong
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Publication number: 20090020638Abstract: In order to increase the service life of a grinding tool (14, 16, 24a, 24b), it is coated with a wear-resistant material, wherein the coating (30, 301) has a ductile metallic parent material (32) with hard particles (34) embedded therein.Type: ApplicationFiled: January 17, 2007Publication date: January 22, 2009Inventors: Norbert Becker, Thomas Sontgen, Sigrid Thanner, Kurt Tischler
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Patent number: 7309412Abstract: Composite coating compositions, composite metallic coatings derived from these compositions, and methods of forming the composite coating compositions and composite metallic coatings, wherein the compositions and coatings comprise particles of at least one quasicrystalline metal alloy and at least one elemental metal. The methods include electrocodepositing suspended quasicrystalline metal alloy particles and dissolved metal ions onto a substrate. Preferably, the substrate is disposed in an aqueous bath containing at least one dissolved metal ion species and at least one suspended quasicrystalline metal alloy powder species. The compositions and coatings enhance the wear, friction, hardness, corrosion, and non-stick characteristics of the substrate.Type: GrantFiled: April 12, 2004Date of Patent: December 18, 2007Assignee: Lynntech, Inc.Inventors: Zoran Minevski, Charles Tennakoon, Carl Nelson, Kelvin Anderson, Frederick Burns
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Patent number: 7201972Abstract: There is provided a metal thin film comprising a metal plate and a diamond particle dispersed in the metal plate. According to the present invention, the metal thin film has a film thickness of 5 nm to 35000 nm. The diamond particle is dispersed almost homogeneously over the direction of the film thickness of the metal thin film. The metal thin film has the diamond particle at a concentration of 1 to 12%.Type: GrantFiled: June 13, 2003Date of Patent: April 10, 2007Inventors: Shigeru Shiozaki, Masato Sone, Hideo Yoshida, Kiyohito Sakon, Tadamasa Fujimura
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Patent number: 6841264Abstract: The invention relates to a doctor or coater blade (1) of steel, having a nickel coating comprising abrasion resistant particles, said coating being constituted by an electrolytic nickel layer comprising abrasion resistant particles. The coating preferably comprises at least two electrolytic nickel layers having different composition, and may be formed differently in different sections of the blade. The invention also relates to a continuous process for electrolytic nickel coating in at least one electrolytic cell holding an electrolyte liquid comprising at least one nickel salt, and in at least one of these cells also comprising abrasion resistant particles.Type: GrantFiled: November 29, 2001Date of Patent: January 11, 2005Assignee: Swedev AktiebolagInventors: Allan Lunnerfjord, Roland Sundberg, Jan-Åke Gavén
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Publication number: 20040137261Abstract: The invention relates to a doctor or coater blade (1) of steel, having a nickel coating comprising abrasion resistant particles, said coating being constituted by an electrolytic nickel layer comprising abrasion resistant particles. The coating preferably comprises at least two electrolytic nickel layers having different composition, and may be formed differently in different sections of the blade. The invention also relates to a continuous process for electrolytic nickel coating in at least one electrolytic cell holding an electrolyte liquid comprising at least one nickel salt, and in at least one of these cells also comprising abrasion resistant particles.Type: ApplicationFiled: January 13, 2004Publication date: July 15, 2004Inventors: Allan Lunnerfjord, Roland Sundberg, Jan-Ake Gaven
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Patent number: 6755953Abstract: In order to preventing thiol-coated metal particles from being liberated from a self-aligning membrane on a substrate during coating the metal particles deposited on the self-aligning membrane with thiol molecules, this invention provides a process for forming a metal particle ordered structure wherein a voltage is applied on the substrate for preventing the metal particles from being liberated from the self-aligning membrane during coating the metal particles deposited on the self-aligning membrane on the substrate with thiol molecules.Type: GrantFiled: June 12, 2002Date of Patent: June 29, 2004Assignees: NEC Corporation, Japan Science and Technology CorporationInventor: Masakazu Baba
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Patent number: 6635166Abstract: Inorganic or organic fine particles which are insoluble to water are added to a metal plating bath, by dispersing the fine particles in a watery medium by the help of an azo-surfactant having an aromatic azo compound residue. Electrolysis is then carried out. According to the present invention, the content of the fine particles present in a composite plating film composed of the fine particles and a metal can be increased.Type: GrantFiled: December 4, 2001Date of Patent: October 21, 2003Assignee: Japan Science and Technology CorporationInventors: Tetsuo Saji, Kumar Nabeen Shrestha
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Publication number: 20030183529Abstract: The present invention provides an abrasion-resistant coating which has high oxidation resistance and durability and can be applied easily at a low cost. The abrasion-resistant coating in accordance with the present invention is formed at the tip end of a base material forming a gas turbine blade. The abrasion-resistant coating at the tip end has a thickness of 300 microns. On the tip end, hard particles H consisting of CBN are fixed in a bond coating formed by heating, melting, and solidification of a mixture of a brazing filler metal and M-Cr—Al—Y (M designates a metal element such as Co and Ni). The hard particles H are Ni and Co coated to improve wettability relative to the brazing filler metal, and are arranged so that some of them are partially protruded from the surface of bond coating to exhibit the grindability.Type: ApplicationFiled: April 1, 2003Publication date: October 2, 2003Inventors: Minoru Ohara, Masahiko Mega
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Publication number: 20020139680Abstract: A method for fabricating an abrasive tool. A tool substrate is provided. A surface of the substrate is coated with an electroplatable bonding material. The electroplatable bonding material comprises a mixture of a conductive material and an adhesive material. Abrasive particles are adhered to the bonding material. The abrasive particles are adhered so as to have a predetermined distribution over the coated surface of the substrate. A metal layer is electroplated to the electroplatable bonding material to secure the abrasive particles to the substrate. Thus, in accordance with the present invention, the fabricated abrasive tool has abrasive particles having the predetermine distribution and fixed to the substrate by the adhesive material and the electroplated metal layer.Type: ApplicationFiled: March 27, 2002Publication date: October 3, 2002Inventor: Kosta Louis George
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Patent number: 6447561Abstract: An abrasive body for grinding optical glass, precious and natural stones such as marble, or other material such as wood, metal, plastic or the like is provided. The abrasive body comprises a base body of woven, knitted or embroidered fabric made of carbon fibers, or of a graphite foil. A uniform, homogeneous diamond or boron nitride coating is deposited on the base body as a grinding layer.Type: GrantFiled: July 10, 2000Date of Patent: September 10, 2002Assignee: Winter CVD Technik GmbHInventors: Ernst Michael Winter, Hans-Joachim Wiemann
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Patent number: 6372112Abstract: A method of manufacturing a flexible abrasive member, includes the steps of providing a porous substrate, impregnating the substrate with an electrically isolating material, treating a side of the impregnated substrate so as to provide areas with different properties as to water or solvent resistance, washing the impregnating substrate with water or solvent so as to wash away the areas with relatively low water or solvent resistance for obtaining a prepared substrate with discrete areas, placing the prepared substrate in a metal deposition math, and depositing metal in the discrete areas in the presence of abrasive particles so as to form abrasive metal deposits.Type: GrantFiled: December 3, 1999Date of Patent: April 16, 2002Inventor: Sandro Giovanni Giuseppe Ferronato
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Publication number: 20020026752Abstract: This invention pertains to an abrasive article comprising precisely shaped particles. The abrasive article may be a coated abrasive article, a bonded abrasive or a nonwoven abrasive article. The precisely shaped particles may further comprise abrasive grits, fillers, grinding aids and lubricants.Type: ApplicationFiled: February 26, 1999Publication date: March 7, 2002Applicant: MINNESOTA MINING AND MANUFACTURING COMPANYInventors: SCOTT R. CULLER, JOHN J. GAGLIARDI, THOMAS W. LARKEY, ERIC G. LARSON, LARRY M. MARTIN, JEFFREY W. NELSON
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Patent number: 6319308Abstract: The invention is directed to corrosion and wear resistant metallic coatings containing nickel, boron, particles. The coatings are preferably deposited on catalytically active substrates from an electroless coating bath containing nickel ions, a stabilizer, a metal ion complexing agent, particles and a borohydride reducing agent, at a pH of about 10 to about 14.Type: GrantFiled: December 21, 2000Date of Patent: November 20, 2001Inventor: Edward McComas
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Patent number: 6306274Abstract: Disclosed are an apparatus and method for making both coarse-sided electrodeposition blades for cutting, for instance, semiconductor wafers. The apparatus comprises at least an electrolyte bath containing an electrodeposition object and pulverized grindstone in the electrolyte, an electrolytic metal immersed in the electrolyte, and an electric source whose positive and negative terminals are connected to the electrolytic metal and electrodeposition object, and the surface of the electrodeposition object, on which a required electro-deposit is to be formed, is of a predetermined coarseness.Type: GrantFiled: September 9, 1999Date of Patent: October 23, 2001Assignee: Disco CorporationInventor: Keiichi Kajiyama
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Patent number: 6299750Abstract: A method based on superfinishing for coating elongated metal blanks. The blanks have at least two axially aligned portions with varying cross-sections, wherein particles of a hard substance protruding from the surface of the coating are embedded into a metal lining in a chemical electroplating bath on the surface of a first portion provided with indentations or the like. The exposed surfaces of a second portion remain substantially devoid of hard surface particles, by a plurality of blanks being freely circulated in a rotating drum in a dispersion which is suspended in the electroplating wherein the hard substance particles adhering to the exposed surfaces are removed again by rubbing the blanks against each other.Type: GrantFiled: January 3, 2000Date of Patent: October 9, 2001Inventors: Horst Pilgenröder, Vincenzo Cavallaro
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Patent number: 6054225Abstract: A piston ring is formed with a nitrided layer over all surfaces and formed with a composite chromium plating film over the nitrided layer in the outer circumferential surface. The composite chromium plating film has a network of cracks formed on the outer surface and interior. Spherical alumina particles are fixed in these cracks. The average size of the spherical alumina particles is 0.7 to 10 .mu.m and the dispersion ratio of the spherical alumina particles is 3 to 15 percent by volume.Type: GrantFiled: November 10, 1997Date of Patent: April 25, 2000Assignee: Teikoku Piston Ring Co., Ltd.Inventors: Akira Harayama, Toshiaki Imai
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Patent number: 5989405Abstract: A dresser includes a super-abrasive fixed by electroplating on a working face which is disposed perpendicular to the axis of rotation of the dresser, the height of protrusion of particles of the super-abrasive is 5 to 30% of an average diameter of the particles, and a process for producing such a dresser includes temporarily fixing the super-abrasive in an amount to form a single layer to a base metal by electroplating, removing loose stones in the temporarily fixed super-abrasive by a grinder or shaking, electroplating a surface having the temporarily fixed super-abrasive with a metal until thickness of the plating metal reaches height of the most protruded part of the super-abrasive or until particles of the super-abrasive are completely buried in the plating metal, and working the electroplated surface for abrasive protrusion to expose most protruded parts of the super-abrasive resulting in a high accuracy dresser which enables dressing of a polishing pad in a short time and eliminates the releasing of parType: GrantFiled: June 25, 1997Date of Patent: November 23, 1999Assignee: Asahi Diamond Industrial Co., Ltd.Inventors: Yasunori Murata, Kenji Kakui
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Patent number: 5935407Abstract: A process is provided for producing an abrasive coating on a substrate surface by applying a bond coat by low pressure plasma spraying and anchoring to the bond coat abrasive particles by electroplating and embedding the particles into an oxidation resistant matrix by entrapment plating.Type: GrantFiled: November 6, 1997Date of Patent: August 10, 1999Assignee: Chromalloy Gas Turbine CorporationInventors: Krassimir P. Nenov, Richard Fenton, Joseph A. Fuggini, Peter Howard
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Patent number: 5868917Abstract: Process suitable for providing a substrate with a protective coating based on chromium, including a chromium matrix in which solid particles are distributed. The process includes a step of electrodeposition of the coating carried out by passing an electric current between a cathode or cathodes of the substrate to be coated and an anode or anodes. The cathode(s) and anode(s) are immersed in an electroplating solution, wherein the electroplating solution is based on an aqueous solution including trivalent chromium obtained from the reduction of chromic acid by a reducing agent, and contains solid particles.Type: GrantFiled: October 27, 1995Date of Patent: February 9, 1999Assignee: Floquet MonopoleInventor: Patrick Benaben
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Patent number: 5755946Abstract: A flexible abrasive member comprising a first porous layer of mesh, non-woven or perforated sheet, conductive or non-conductive material to which on one side deposits are deposited by way of any metal plating technique of either the electrolytic, electroless or vacuum deposition type, or any galvanic process, abrasive particles being embedded in the metal deposits, a layer of filling material, such as a resin, being present between the deposits which filling material is bonded to said first porous layer and/or the deposits, and at least a second porous layer of mesh, non-woven or perforated sheet, conductive or non-conductive material being present and being laid substantially along one side of the first porous layer. The side edge of the deposit has at least one annular groove along at least part of the circumference of the deposit.Type: GrantFiled: September 20, 1996Date of Patent: May 26, 1998Inventor: Sandro Giovanni Giuseppe Ferronato
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Patent number: 5702574Abstract: A method of and apparatus for producing abrasive tips on compressor or turbine rotor blades by electrolytic or electroless deposition in which the blades are mounted in a hollow jig with the tips of the blades extending through sealed openings in the jig and abrasive tips are formed on the tips. The parts of the blades within the hollow jig are isolated from the electrolyte without the need for wax masking. Preferably the jig is cylindrical with the blades extending radially through at least one circumferential row of apertures. The jig may comprise two end discs and at least one ring in which a circumferential row of apertures is formed. The ring is positioned between the end discs and means are provided for securing the discs and ring together.Type: GrantFiled: May 3, 1996Date of Patent: December 30, 1997Assignee: Praxair S.T. Technology, Inc.Inventors: John Foster, Alan Taylor, Martin Patrick Chatterley
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Patent number: 5665217Abstract: The present invention relates to a method and apparatus for forming abrasive surfaces on the tips of a plurality of workpieces such as the tips of gas turbine airfoil blades. The method broadly comprises the steps of providing a mechanical masking device having a plurality of openings arranged around the circumference of the device, installing an array containing a plurality of workpieces to be coated within the mechanical masking device so that portions of the workpieces including the tips thereof extend through the openings, immersing the mechanical masking device with the installed array of workpieces in a tank containing a plating bath with a matrix material and an abrasive grit material in slurry form so that the workpieces lie in a substantially horizontal plane, and applying a current through the plating bath to form the abrasive surfaces on the tips of the workpieces. The mechanical masking device protects portions of the array from the coating operation.Type: GrantFiled: April 24, 1995Date of Patent: September 9, 1997Assignee: United Technologies CorporationInventors: Gary A. Gruver, Joseph J. Parkos, Jr., Robert G. Adinolfi