Work Handling Patents (Class 148/656)
  • Patent number: 8603263
    Abstract: The present invention provides a duplex stainless steel having excellent resistance to alkalis and particularly corrosion resistance against high-temperature concentrated alkali solutions and excellent weldability. The duplex stainless steel has a chemical composition comprising, in mass %, C: at most 0.03%, Si: at most 0.5%, Mn: at most 2.0%, P: at most 0.04%, S: at most 0.003%, Cr: at least 25.0% to less than 28.0%, Ni: at least 6.0% to at most 10.0%, Mo: at least 0.2% to at most 3.5%, N: less than 0.5%, W: at most 3.0%, and a remainder of Fe and impurities.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: December 10, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Hideya Kaminaka, Junichi Higuchi, Yoshiaki Yamade, Shuuji Yoshida, Junko Imamura
  • Patent number: 8382919
    Abstract: A process of forming an ultrafine crystal layer in a workpiece constituted by a metallic material. The process includes: performing a machining operation on a surface of the workpiece, so as to impart a large local strain to the machined surface of the workpiece, where the machining operation causes the machined surface of the workpiece to be subjected to a plastic working that causes to have large local strain in the form of a true strain of at least one, such that the ultrafine crystal layer is formed in a surface layer portion of the workpiece that defines the machined surface of the workpiece. Also disclosed are a nanocrystal layer forming process, a machine component having the ultrafine crystal layer or the nanocrystal layer, and a machine component producing process of producing the machine component.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: February 26, 2013
    Assignees: Toyohashi University of Technology, Univance Corporation
    Inventors: Minoru Umemoto, Yoshikazu Todaka, Tadashi Suzuki, Toshiichi Ota, Akihiro Yamashita, Shuji Tanaka
  • Patent number: 7743498
    Abstract: A method of processing seals (20), like leaf seals, in which seals (20) an annular gap, formed between two coaxial, cylindrical surfaces, is sealed off in the axial direction by a multiplicity of individual, thin sealing elements (22; 22a, b) which, with an orientation deviating from the radial direction, extend transversely through the gap and are fixed at their end assigned to the one cylindrical surface and bear loosely with the other, free end against the other cylindrical surface.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: June 29, 2010
    Assignee: ALSTOM Technology Ltd.
    Inventor: Nigel Anthony Rhodes
  • Patent number: 7718018
    Abstract: A method of cooling both surfaces of steel plate, which stably secures precision of cooling control from a start of cooling to an end so as to uniformly cool the top and bottom surfaces of the steel plate and thereby stably secures the steel plate quality and cools the steel plate down to a target temperature with a good precision. The method comprises dividing a steel plate cooling region into at least a spray impact part region and a spray non-impact part region, predicting a heat transfer coefficient for each divided region in advance, computing a predicted temperature history of the steel plate based on this predicted value, and setting and controlling amounts of sprayed coolant on the spray impact part regions by top and bottom surface nozzles.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: May 18, 2010
    Assignee: Nippon Steel Corporation
    Inventors: Yoshihiro Serizawa, Ryuji Yamamoto, Shigeru Ogawa
  • Patent number: 7115176
    Abstract: In a method of manufacturing articles (8) in hardenable metal materials, a shaped workpiece (5.1, 5.2) with closed cross-section is hardened. The hardened workpiece (5.1, 5.2) is separated into at least two parts, where each part constitutes one shaped open cross-section. The invention also concerns a manufacturing process and a production line for the manufacture of articles (8) in hardenable metal materials.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: October 3, 2006
    Assignee: Accra Teknik AB
    Inventors: Anders Sundgren, Göran Berglund, Mats Lindberg
  • Patent number: 6972058
    Abstract: A method of heat treating tool steel by using a high intensity infrared heating source, said source being tungsten halogen heat lamps which operate in air, non-air and/or vacuum environments, and a tool steel heat treat system which includes a furnace containing said tungsten halogen lamp means, a lining of a reflective metal and, preferably, support structure for the tool steel workpieces which are composed of ceramic or other high melting point material.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: December 6, 2005
    Assignee: A. Finkl & Sons Co.
    Inventor: Algirdas A. Underys
  • Publication number: 20040177906
    Abstract: A plurality of gas turbine components or other articles are manufactured from a plurality of metallic-alloy workpieces using a manufacturing apparatus having a metalworking apparatus, and an annealing apparatus wherein the individual workpieces are annealed by single-workpiece annealing and not by large-batch annealing. A workpiece flow of the plurality of workpieces is established sequentially through the metalworking apparatus and the annealing apparatus.
    Type: Application
    Filed: March 14, 2003
    Publication date: September 16, 2004
    Inventors: Thomas Froats Broderick, Jeffrey Lynn Myers, Francois Laurent Giguere, Peter Brian Haley, Paul Raymond Phaneuf, William Francis Bergeron, Thomas Caudwell Straub
  • Patent number: 6616778
    Abstract: A process for producing a ferritically rolled steel strip, in which liquid steel is cast in a continuous-casting machine (1) to form a slab and, utilizing the casting heat, is conveyed through a furnace device (7) undergoes preliminary rolling in a preliminary rolling device (10) and, in a final rolling device (14), is finishing-rolled to form the ferritic steel strip with a desired final thickness, in which process, in a completely continuous, an endless or a semi-endless process, the slab is rolled in the austenitic range in the preliminary rolling device (10) and, after rolling in the austenitic range, is cooled to a temperature at which the steel has a substantially ferritic structure, and the strip is rolled, in the final rolling device, at speeds which substantially correspond to the speed at which it enters the final rolling device (14) and the following thickness reduction stages, and in at least one stand of the final rolling device (14), the strip is ferritically rolled at a temperature of between 8
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: September 9, 2003
    Assignee: Corus Staal BV
    Inventor: André Bodin
  • Patent number: 6464806
    Abstract: A method of forming extruded structures from a polycrystalline material and structures formed thereby. The method generally entails forming a structure that comprises a polycrystalline material constrained by a second material in all but one direction, with the polycrystalline material having a patterned surface that is normal to the one direction. The polycrystalline material is then selectively heated, during which the second material restricts thermal expansion of the polycrystalline material in all but the one direction normal to the surface of the polycrystalline material. As a result, stresses are induced in the polycrystalline material that cause grain growth from the surface of the polycrystalline material in the one direction. The growth of an individual grain produces an extruded structure that projects above the surface of the polycrystalline material.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: October 15, 2002
    Assignee: International Business Machines Corporation
    Inventors: Munir D. Naeem, Lawrence A. Clevenger
  • Patent number: 6174390
    Abstract: A spiral parts heat treatment apparatus includes a first guide, a transfer unit, a second guide, and a controller. The first guide has a carrier portion that continuously conveys the manufactured spiral parts carried thereon in a longitudinal direction. The transfer unit is disposed downstream from the first guide to feed the spiral parts one by one after discrimination. The second guide is provided continuously to the transfer unit and has a carrier portion and a driving portion. The carrier portion serves to guide the spiral parts carried thereon in the longitudinal direction in the heat treatment furnace. The driving portion serves to push the spiral parts from a rear end side thereof and a driving portion. The controller performs a control operation so as to feed the spiral parts one by one.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: January 16, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Baba, Tomomasa Nakano
  • Patent number: 6120622
    Abstract: A process and arrangement for manufacturing brush-type seals having inclined bristles provides at least one ring-shaped brush-type seal having radially extending bristles of a length which, by way of the inclining of the bristles with respect to the radii of the ring-shaped brush-type seal leads at least essentially to the desired brush diameter; positions the at least one brush-type seal and at least one heatable annealing wall of an annealing device relative to one another so that the free bristle ends, while the bristles are bent, rest against the annealing wall, and simultaneously or subsequently rotating the at least one brush-type seal and at least the heatable annealing wall relative to one another until the bristles are inclined with respect to the radii of the ring-shaped brush-type seal in its ring plane by a definable angle; heats the annealing wall to a definable temperature; maintains the temperature of the heated annealing wall for a definable time period; and removes the at least one brush-type
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: September 19, 2000
    Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbH
    Inventors: Alfred Mayr, Dieter Hagg
  • Patent number: 5776268
    Abstract: A process for progressively manufacturing cutting edge needles or wire members. Needle blanks or wire blanks are cut from a roll of wire and mounted to a carrier strip. The carrier strip and needles are moved through a succession of coining dies and at least one trimming die, wherein the first coining die is an open coining die and the one or more successive coining dies are closed coining dies. The needle blanks or wire members are optionally curved, heat treated and electrochemically treated resulting in cutting edge needles or wire members formed without a grinding step and without adversely affecting point ductility.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: July 7, 1998
    Assignee: Ethicon, Inc.
    Inventors: William McJames, Bernard M. Willis, Daniel Smith, Eugene Reynolds, Carl Gucker, Michael Nordmeyer
  • Patent number: 5766382
    Abstract: A thermal treatment installation for treating and quenching pieces (22) of small dimensions comprises a treatment line (LT) including a treatment furnace (2) for bringing the pieces to treatment temperatures, a quenching cell (4) located downstream from the furnace, and a transport apparatus for displacing the pieces along the treatment line. The pieces to be treated are placed in baskets (20) and the baskets are grouped into charges or distinct lots forming a volume (V) having a height (H) substantially less than the other dimensions (L1, L2) of the volume. The transport apparatus comprises several driving devices (DE1, DE2, DE3, DE3' AND DE4) which are individually regulated by a regulation circuit (UC) to at least three speeds including an input speed (V1), a treatment speed (V2) and an output speed (V3) to divide the treatment line into sectors so that locally along the treatment line the baskets move at different speeds.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: June 16, 1998
    Assignee: Patherm SA
    Inventors: Jean-Marie Hertzog, Thierry Sperisen, Michel Voutat, Daniel Zimmermann
  • Patent number: 5423924
    Abstract: A method and for the heat treatment of at least one metal wire (1), chararized by passing the wire (1) within at least one pair of thermal transfer plates (2, 2a, 2b) between two grooves (8, 8a, 8b) made in the two plates (2, 2a, 2b) of each of said pairs, adjusting the variable distance (E) between the plates, so that the wire (1) is directly in contact with a gas (11) which is practically without forced ventilation and is disposed between the grooves (8, 8a, 8b).
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: June 13, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & CIE
    Inventors: Andre Reiniche, Christian Chanet
  • Patent number: 5419791
    Abstract: This is a method for heat assisted forming, annealing, and hardening sheet metal shapes in a clean environment in a single facility that results in dimensionally correct, cost-effective, contaminant free parts.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: May 30, 1995
    Inventor: Carroll W. Folmer
  • Patent number: 5405464
    Abstract: Method and apparatus for supporting a steel slab and protecting the bottom surface of the slab as the slab is advanced over a skid bar system through a slab heating furnace and which includes at least a first member for supporting the weight of the steel slab and protecting the slab's bottom surface, and a second member for contacting an edge portion of the steel slab. The second member of the apparatus is comprised of a material which is substantially non-consumable, or may be coated or lined with a material which renders it non-consumable, at the operating temperatures of a slab heating furnace and which inhibits the movement of carbon from the rider into the steel slab. In the alternative, the method may include coating the slab edge with a layer having high temperature stability and low thermal conductivity.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: April 11, 1995
    Assignee: Allegheny Ludlum Corporation
    Inventor: John E. Mosser