Abrasive Article Produced Patents (Class 205/110)
  • Patent number: 10428437
    Abstract: 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: Grant
    Filed: September 12, 2014
    Date of Patent: October 1, 2019
    Assignee: MTU AERO ENGINES AG
    Inventors: André Werner, Josef Linska
  • Patent number: 9683452
    Abstract: 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: Grant
    Filed: December 19, 2013
    Date of Patent: June 20, 2017
    Assignee: SNECMA
    Inventors: Florent Pierre Antoine Luneau, Alain Dominique Gendraud, Patrick Joseph Marie Girard, Sebastien Jean Laurent Prestel
  • Patent number: 9550267
    Abstract: 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: Grant
    Filed: December 19, 2013
    Date of Patent: January 24, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Micah Beckman, David Krzysztof Masiukiewicz
  • Patent number: 9517547
    Abstract: 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: Grant
    Filed: November 28, 2011
    Date of Patent: December 13, 2016
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Masaki Kasashima, Takehisa Minowa, Harukazu Maegawa, Yoshifumi Nagasaki
  • Patent number: 9399918
    Abstract: 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: Grant
    Filed: August 8, 2013
    Date of Patent: July 26, 2016
    Assignee: MTU Aero Engines GmbH
    Inventors: Johann Geppert, Peter Eibelshaeuser, Heinz Rauschmair
  • Patent number: 9242342
    Abstract: 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: Grant
    Filed: March 14, 2012
    Date of Patent: January 26, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Bo-I Lee, Huang Soon Kang, Chi-Ming Yang, Chin-Hsiang Lin
  • Patent number: 8753412
    Abstract: 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: Grant
    Filed: April 29, 2010
    Date of Patent: June 17, 2014
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masaki Kasashima, Yuhito Doi, Harukazu Maegawa, Takehisa Minowa
  • Publication number: 20140147242
    Abstract: 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: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Applicant: 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
  • Publication number: 20140044527
    Abstract: 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: Application
    Filed: August 13, 2012
    Publication date: February 13, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Joseph Parkos, Melvin Freling
  • Patent number: 8523966
    Abstract: 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: Grant
    Filed: November 18, 2008
    Date of Patent: September 3, 2013
    Assignee: North Bel International Srl
    Inventor: Fabio Cantoni
  • Publication number: 20130174493
    Abstract: 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: Application
    Filed: January 3, 2013
    Publication date: July 11, 2013
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Shin-Etsu Chemical Co., Ltd.
  • Publication number: 20130074820
    Abstract: 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: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Chien-Chih Kung, Ching-Yu Tso, Shang-Wanq Yeh, Hsiou-Jeng Shy
  • Publication number: 20130048503
    Abstract: 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: Application
    Filed: December 28, 2010
    Publication date: February 28, 2013
    Applicants: SNECMA, PRAXAIR SURFACE TECHNOLOGIES INC.
    Inventors: Justine Menuey, Frederic Braillard, John Foster, Stephen Owens, Alan Taylor, Martin Chatterney
  • Patent number: 8357217
    Abstract: 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: Grant
    Filed: May 30, 2011
    Date of Patent: January 22, 2013
    Assignees: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Hong-Ting Huang, Chin-Yu Tso, Shang-wanq Yeh, Hsiou-Jeng Shy
  • Publication number: 20120304546
    Abstract: 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: Application
    Filed: May 30, 2011
    Publication date: December 6, 2012
    Applicant: Chung-Shan Institute of Science abd Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Hong-Ting Huang, Ching-Yu Tso, Shang-wanq Yeh, Hsiou-Jeng Shy
  • Patent number: 8021721
    Abstract: 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: Grant
    Filed: May 1, 2007
    Date of Patent: September 20, 2011
    Assignee: Smith International, Inc.
    Inventor: Anthony Griffo
  • Patent number: 7927390
    Abstract: 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: Grant
    Filed: August 3, 2009
    Date of Patent: April 19, 2011
    Assignee: Tadamasa FUJIMURA
    Inventors: Tadamasa Fujimura, Masato Sone, Valeri Yu Dolmatov, Shigeru Shiozaki
  • Publication number: 20100266392
    Abstract: 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: Application
    Filed: April 17, 2009
    Publication date: October 21, 2010
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Joseph J. Parkos, JR., Melvin Freling
  • Publication number: 20100150730
    Abstract: 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: Application
    Filed: November 6, 2009
    Publication date: June 17, 2010
    Applicant: ROLLS-ROYCE PLC
    Inventors: Christopher Sellars, Matthew Hancock
  • Patent number: 7731832
    Abstract: 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: Grant
    Filed: November 13, 2006
    Date of Patent: June 8, 2010
    Assignee: Disco Corporation
    Inventor: Takashi Yamaguchi
  • Publication number: 20090042494
    Abstract: 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: Application
    Filed: August 6, 2008
    Publication date: February 12, 2009
    Inventors: Sung-Taek Moon, Kyoung-Moon Kang, Bong-Su Ahn, Nam-Soo Kim, Gi-Sik Hong
  • Publication number: 20090020638
    Abstract: 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: Application
    Filed: January 17, 2007
    Publication date: January 22, 2009
    Inventors: Norbert Becker, Thomas Sontgen, Sigrid Thanner, Kurt Tischler
  • Patent number: 7309412
    Abstract: 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: Grant
    Filed: April 12, 2004
    Date of Patent: December 18, 2007
    Assignee: Lynntech, Inc.
    Inventors: Zoran Minevski, Charles Tennakoon, Carl Nelson, Kelvin Anderson, Frederick Burns
  • Patent number: 7201972
    Abstract: 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: Grant
    Filed: June 13, 2003
    Date of Patent: April 10, 2007
    Inventors: Shigeru Shiozaki, Masato Sone, Hideo Yoshida, Kiyohito Sakon, Tadamasa Fujimura
  • Patent number: 6841264
    Abstract: 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: Grant
    Filed: November 29, 2001
    Date of Patent: January 11, 2005
    Assignee: Swedev Aktiebolag
    Inventors: Allan Lunnerfjord, Roland Sundberg, Jan-Åke Gavén
  • Publication number: 20040137261
    Abstract: 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: Application
    Filed: January 13, 2004
    Publication date: July 15, 2004
    Inventors: Allan Lunnerfjord, Roland Sundberg, Jan-Ake Gaven
  • Patent number: 6755953
    Abstract: 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: Grant
    Filed: June 12, 2002
    Date of Patent: June 29, 2004
    Assignees: NEC Corporation, Japan Science and Technology Corporation
    Inventor: Masakazu Baba
  • Patent number: 6635166
    Abstract: 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: Grant
    Filed: December 4, 2001
    Date of Patent: October 21, 2003
    Assignee: Japan Science and Technology Corporation
    Inventors: Tetsuo Saji, Kumar Nabeen Shrestha
  • Publication number: 20030183529
    Abstract: 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: Application
    Filed: April 1, 2003
    Publication date: October 2, 2003
    Inventors: Minoru Ohara, Masahiko Mega
  • Publication number: 20020139680
    Abstract: 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: Application
    Filed: March 27, 2002
    Publication date: October 3, 2002
    Inventor: Kosta Louis George
  • Patent number: 6447561
    Abstract: 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: Grant
    Filed: July 10, 2000
    Date of Patent: September 10, 2002
    Assignee: Winter CVD Technik GmbH
    Inventors: Ernst Michael Winter, Hans-Joachim Wiemann
  • Patent number: 6372112
    Abstract: 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: Grant
    Filed: December 3, 1999
    Date of Patent: April 16, 2002
    Inventor: Sandro Giovanni Giuseppe Ferronato
  • Publication number: 20020026752
    Abstract: 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: Application
    Filed: February 26, 1999
    Publication date: March 7, 2002
    Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY
    Inventors: SCOTT R. CULLER, JOHN J. GAGLIARDI, THOMAS W. LARKEY, ERIC G. LARSON, LARRY M. MARTIN, JEFFREY W. NELSON
  • Patent number: 6319308
    Abstract: 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: Grant
    Filed: December 21, 2000
    Date of Patent: November 20, 2001
    Inventor: Edward McComas
  • Patent number: 6306274
    Abstract: 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: Grant
    Filed: September 9, 1999
    Date of Patent: October 23, 2001
    Assignee: Disco Corporation
    Inventor: Keiichi Kajiyama
  • Patent number: 6299750
    Abstract: 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: Grant
    Filed: January 3, 2000
    Date of Patent: October 9, 2001
    Inventors: Horst Pilgenröder, Vincenzo Cavallaro
  • Patent number: 6054225
    Abstract: 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: Grant
    Filed: November 10, 1997
    Date of Patent: April 25, 2000
    Assignee: Teikoku Piston Ring Co., Ltd.
    Inventors: Akira Harayama, Toshiaki Imai
  • Patent number: 5989405
    Abstract: 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 par
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: November 23, 1999
    Assignee: Asahi Diamond Industrial Co., Ltd.
    Inventors: Yasunori Murata, Kenji Kakui
  • Patent number: 5935407
    Abstract: 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: Grant
    Filed: November 6, 1997
    Date of Patent: August 10, 1999
    Assignee: Chromalloy Gas Turbine Corporation
    Inventors: Krassimir P. Nenov, Richard Fenton, Joseph A. Fuggini, Peter Howard
  • Patent number: 5868917
    Abstract: 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: Grant
    Filed: October 27, 1995
    Date of Patent: February 9, 1999
    Assignee: Floquet Monopole
    Inventor: Patrick Benaben
  • Patent number: 5755946
    Abstract: 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: Grant
    Filed: September 20, 1996
    Date of Patent: May 26, 1998
    Inventor: Sandro Giovanni Giuseppe Ferronato
  • Patent number: 5702574
    Abstract: 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: Grant
    Filed: May 3, 1996
    Date of Patent: December 30, 1997
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: John Foster, Alan Taylor, Martin Patrick Chatterley
  • Patent number: 5665217
    Abstract: 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: Grant
    Filed: April 24, 1995
    Date of Patent: September 9, 1997
    Assignee: United Technologies Corporation
    Inventors: Gary A. Gruver, Joseph J. Parkos, Jr., Robert G. Adinolfi
  • Patent number: 5660320
    Abstract: A metallic alloy part having a bonded coating that includes dispersed hard-material particles embedded in a metal matrix, composed of a eutectic solder whose alloy elements include at least the base metal of the metallic alloy part. The solder is formed by fusion bonding on the metallic alloy part, a precoating composed of sequential layers of the elemental components of the solder applied on the metal part or on the hard-material particles. The composition and disposition of the various layers are graduated such that the melting points of the elemental solder components increase towards the outermost layer.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: August 26, 1997
    Assignee: MTU Motoren-Und Turbinen-Union Munchen GmbH
    Inventors: Wilhelm Hoffmuller, Josef Eichner, Robert Sigl, Thomas Uihlein
  • Patent number: 5558758
    Abstract: An electrodeposited composite coating comprises, as deposited, a matrix of cobalt and particles of chromium carbide, at least 50% and preferably at least 80% or 90% by weight of the particles lying within the size range of 4 .mu.m to 8 .mu.m.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: September 24, 1996
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: John Foster
  • Patent number: 5496463
    Abstract: In an electroplating container in which at least one portion of an inside surface of the container is formed from a metal material serving as cathode or anode and an anode or cathode is placed in the container, a composite electroplating liquid containing metal ions and fine solid particles is introduced into a bottom portion of the container in such a manner that the introduced composite electroplating liquid spouts downward against an inside bottom surface of the container and is allowed to flow upward through a flow path formed between the anode and the cathode, and an electric current is applied between the anode and cathode so as to form a composite electroplating layer including the fine solid particles evenly distributed in a metal matrix on a surface of the cathode or anode facing the flow path.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: March 5, 1996
    Assignee: Nihon Parkerizing Co., Ltd.
    Inventors: Seiki Mori, Yasutoshi Ohtoh, Masaaki Beppu
  • Patent number: 5486281
    Abstract: 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: Grant
    Filed: October 15, 1993
    Date of Patent: January 23, 1996
    Assignee: United Technologies Corporation
    Inventors: Gary A. Gruver, Joseph J. Parkos, Jr., Robert G. Adinolfi
  • Patent number: 5476363
    Abstract: A method and apparatus for increasing blade fatigue strength in a turbine engine. The blades in the turbine engine are configured so as to reduce stress at the tip of the blades during operation of the turbine engine, thus increasing blade fatigue strength. This stress reduction helps to counteract the detrimental effect of abrasive tip coatings on blade fatigue strength. In one embodiment, the tip of the blade is chamfered in order to reduce the stress on the tip of the blade. An abrasive coating is then applied to the tip of the blade to assist the blade in seating into an abradable outer air seal. In another embodiment, an abrasive coating is applied to a center portion of the tip of the blade, with the periphery of the abrasive coating being set back from the opposing surfaces of the blade.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: December 19, 1995
    Assignees: Charles E. Sohl, Pratt & Whitney
    Inventors: Melvin Freling, Gary A. Gruver, Joseph J. Parkos, Jr., Douglas A. Welch
  • Patent number: 5466359
    Abstract: According to a method of manufacturing a microwave tube collector of this invention, a copper plating layer in which powder particles of a material having a secondary electron emissivity of not more than 1 are dispersed and precipitated is formed on a surface of a collector electrode. Only the copper plating layer is selectively etched for a predetermined period of time to increase the degree of exposure and the surface area of the powder particles of the material having a secondary electron emissivity of 1 or more in the copper plating layer.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: November 14, 1995
    Assignee: NEC Corporation
    Inventor: Toshihiro Kabei
  • Patent number: 5389228
    Abstract: A method is taught for application of an abrasive tip to a gas turbine blade by brush plating, wherein particulate abrasive is applied to the tip of said blade and held in position during electroplating by a porous dielectric cloth.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: February 14, 1995
    Assignee: United Technologies Corporation
    Inventors: Kenneth C. Long, Brian A. Manty, Charles C. McComas