With Heating Or Cooling Patents (Class 72/286)
  • Patent number: 11482353
    Abstract: When bending a superconducting cable of a stack conductor structure in which a plurality of layers of tape wires are stacked, a twisting process is performed for the superconducting cable immediately before a bending portion of the superconducting cable.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: October 25, 2022
    Inventors: Sataro Yamaguchi, Masae Kanda, Takayuki Kojima
  • Patent number: 9236166
    Abstract: A bonding wire is provided containing a wire core made of a first material containing a metal and a wire jacket that envelopes the wire core and is made of a second material containing a metal. The wire core and the wire jacket are made of different metals and the bonding wire has an aspect ratio of no more than 0.8. The bonding wire efficiently prevents damage to bonding surfaces during the bonding process and short-circuiting during the use of corresponding sub-assemblies.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: January 12, 2016
    Assignee: Heraeus Deutschland GmbH & Co. KG
    Inventors: Eugen Milke, Jürgen Dick, Peter Prenosil, Frank-Werner Wulff, Poh Yoong Kong
  • Publication number: 20140345355
    Abstract: A set of tooling for a progressive forming machine comprising die and tool units having internal complementary cavity portions for receiving a workpiece, one of said units being arranged to slide a limited distance along its axis and to be biased by a spring force towards the other unit when the units are mounted in the forming machine, the units each having an end face with a smooth surface finish adapted to press against the smooth surface finish of the end face of the other unit, the end face area of one of the units being relatively small compared to its major cross-sectional area whereby a high contact pressure between the end faces is obtained for a given spring bias force such that extrusion/cooling oil coating a workpiece received in the cavity portions is restrained from leakage from the cavity portions across said end faces during a hydrostatic trapped extrusion of the workpiece in the die and tool units whereby the die and tool units are capable of shaping the workpiece to a degree beyond limits of
    Type: Application
    Filed: August 12, 2014
    Publication date: November 27, 2014
    Inventors: Thomas E. Hay, Donald E. Krintzline
  • Patent number: 8850863
    Abstract: There is provided an aluminum-alloy material having sufficient electric conductivity and tensile strength as a wiring material and excellent in wire-drawing property, and an electric wire or cable using the same. An electric wire or cable includes an aluminum-alloy strand formed of an aluminum-alloy including Fe: 0.1% by mass or more to less than 1.0% by mass, Zr: 0 to 0.08% by mass, Si: 0.02 to 2.8% by mass, at least one of Cu: 0.05 to 0.63% by mass and Mg: 0.04 to 0.45% by mass, and the remainder being aluminum and unavoidable impurities.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: October 7, 2014
    Assignee: Yazaki Corporation
    Inventors: Kenichi Ishibashi, Kazumi Mochizuki, Yasunobu Kondo
  • Publication number: 20140063762
    Abstract: A bonding wire according to the invention contains a core having a surface, in which the core contains silver as a main component and at least one element selected from gold, palladium, platinum, rhodium, ruthenium, nickel, copper, and iridium. The wire exhibits at least one of the following properties: I. an average size of crystal grains of the core is between 0.8 ?m and 3 ?m, II. the amount of crystal grains having an orientation in the <001> direction in a wire cross section is in a range of 10-20%, III. the amount of crystal grains having an orientation in the <111> direction in a wire cross section is in a range of 5-15%, and IV. the total amount of crystal grains having orientations in the <001> and <111> directions in a wire cross section is in a range of 15-40%.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 6, 2014
    Inventors: Jae-Sung RYU, Eun-Kyun CHUNG, Yong-Deok TARK
  • Publication number: 20130137012
    Abstract: A solid oxide fuel cell (SOFC) interconnect comprises a metal sheet with an air side and a fuel side in accordance with an embodiment of the present invention. The metal sheet comprises a metallic composite having a matrix. The matrix comprises a first metal. The metal sheet also comprises a plurality of discontinuous, elongated, directional reinforcement wires. The reinforcement wires comprise a second metal that is immiscible in the first metal. An oxidation protection layer is disposed on the air side of the metal sheet.
    Type: Application
    Filed: January 28, 2013
    Publication date: May 30, 2013
    Applicant: Boeing Corporation
    Inventor: Boeing Corporation
  • Publication number: 20130118420
    Abstract: In a heat transfer tube for a steam generator, a surface roughness of an inner surface of the tube is measured along a longitudinal direction and an amount of dimensional variation in a length of 50 mm taken from a measured roughness chart is 4 ?m or less and an amount of bend crookedness in a portion of a length of 1000 mm from a tube end is 1 mm or less. Hence, when the tube is produced, an inspection of the tube by an eddy current flaw detection can be conducted at a high S/N ratio and hence an inspection efficiency can be improved, and when the tube is assembled into a heat exchanger, the assembling operation can be easily performed.
    Type: Application
    Filed: June 7, 2011
    Publication date: May 16, 2013
    Inventors: Masatoshi Toyoda, Kouichi Kuroda
  • Publication number: 20130086965
    Abstract: A seamless steel tube for air bag use is formed from a steel comprising, in mass percent, C: 0.04-0.20%, Si: 0.10-0.50%, Mn: 0.10-1.00%, P: at most 0.025%, S: at most 0.005%, Al: at most 0.10%, Cr: 0.01-0.50%, Cu: 0.01-0.50%, Ni: 0.01-0.50%, a remainder of Fe and unavoidable impurities. The tube is cold drawn at least one time with a working ratio so that reduction in area is greater than 40% to obtain predetermined dimensions. The tube is then quench hardened by heating to at least the Ac3 point at a temperature rate increase of at least 50° C. per second followed by cooling at a cooling rate of at least 50° C. per second at least in a temperature range of 850-500° C. Tempering is done at a temperature of at most the Ac1 point.
    Type: Application
    Filed: November 30, 2012
    Publication date: April 11, 2013
    Inventors: Takuma KAWAMOTO, Yuji ARAI, Takashi TAKANO
  • Publication number: 20120094123
    Abstract: Provided is a core wire for guide wire in which high rigidity can be attained even with a fine wire diameter so that pushability is improved while the core wire is prevented from fatigue deformation, and a method for manufacturing the core wire. This core wire 15 for guide wire is made of a Ti—Ni based alloy and has a wire diameter not larger than 0.5 mm and a Young's modulus not lower than 50 GPa. According to the manufacturing method, first, wire drawing is performed on a raw material M0 so that the raw material M0 is passed through a wire drawing dice 2 to be drawn to a certain length while the wire diameter of the core wire is reduced. Thus, a primary processed material M1 is formed. After that, the primary processed material M1 is hammered and drawn by swaging dices 5 and 5 so that a secondary processed material M2 is formed. In this manner, the core wire 15 having a wire diameter not larger than 0.5 mm and a Young's modulus not lower than 50 GPa is manufactured.
    Type: Application
    Filed: March 2, 2010
    Publication date: April 19, 2012
    Inventors: Kiyoshi Yamauchi, Akihisa Furukawa, Kiyohito Ishida, Takeshi Ishikawa, Kiyonori Takezawa, Mitsuya Takezawa
  • Publication number: 20110314888
    Abstract: Provided is a production method in which a steel having a good tensile strength can be produced with a small processing energy. The method is a method of producing a steel wire, the method including: a pre-drawing process in which a high-carbon steel wire containing 0.90 to 1.20% by mass of carbon is subjected to a drawing to obtain an intermediate wire; a heat treatment process in which the intermediate wire is subjected to a patenting heat treatment to obtain a heat treated wire; and a final drawing process in which the heat treated wire is subjected to a drawing to obtain a steel wire, wherein the amount ?f of drawing in the final drawing process which satisfies the relation represented by the following formula: ?f=2 ln (D0/Df) (wherein Df represents the final diameter of the steel wire obtained in the final drawing process, D0 represents the diameter of the heat treated wire before the final drawing process and ln represents natural logarithm) is 2.50 to 3.10.
    Type: Application
    Filed: March 2, 2010
    Publication date: December 29, 2011
    Inventor: Yasuyuki Abe
  • Publication number: 20110024005
    Abstract: A two-phase stainless steel pipe that has not only a corrosion resistance required for oil well pipes but at the same time has a targeted strength is produced, without excessively adding alloying components, by selecting cold drawing conditions. A method for producing a two-phase stainless steel pipe, which comprises, preparing a two-phase stainless steel material having a chemical composition that consists of, by mass %, C: 0.03% or less, Si: 1% or less, Mn: 0.1 to 2%, Cr: 20 to 35%, Ni: 3 to 10%, Mo: 0 to 4%, W: 0 to 6%, Cu: 0 to 3% and N: 0.15 to 0.35%, and the balance being Fe and impurities, forming a material pipe by subjecting to a hot working or further a solid-solution heat treatment, and performing a cold drawing, where the cold drawing is characterized in being performed under the conditions that the working ratio Rd, in terms of the reduction of area, in the final cold drawing step is within a range from 5 to 35%, and the following formula (1) is satisfied: Rd(%)?(MYS?55)/17.2?{1.2×Cr+3.0×(Mo+0.
    Type: Application
    Filed: July 8, 2008
    Publication date: February 3, 2011
    Inventor: Hitoshi Suwabe
  • Patent number: 7854157
    Abstract: The method, in which base material ingot 1 is heated and softened in an electric furnace 3, drawn with a pair of pinch roller 6 and 6, and elongated to make base material rod 7 having a smaller diameter than the ingot, features: forming either a roller groove 11 having a curvature radius which is larger than the outer diameter of the base material rod 7 or a V-shaped roller groove 11 having the cross section consisting of straight lines on the surface of the pinch roller 6 made of metal; nipping with the facing roller grooves 11 and 11 respectively formed on the surfaces of a pair of said pinch rollers 6 and 6; and drawing said base material rod.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: December 21, 2010
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Soichiro Kemmochi, Waichi Yamamura, Takaaki Nacao, Mitsukuni Sakashita
  • Publication number: 20090308503
    Abstract: A cooling unit, a heating-cooling operation including a cooling unit, a rod or wire manufacturing system, a method for manufacturing a rod or wire, a method for heat treating of a rod or wire, a method for treating metal, a steel rod or steel wire, and a treated metal having an improved tensile strength are disclosed. The cooling unit includes at least one adaptable quenching zone and at least one adaptable soaking zone. The at least one adaptable quenching zone is capable of quenching to a soaking temperature. The at least one adaptable soaking zone is capable of maintaining substantially the soak temperature.
    Type: Application
    Filed: July 14, 2007
    Publication date: December 17, 2009
    Inventor: Thomas W. Tyl
  • Publication number: 20090304544
    Abstract: Systems and methods of manufacturing a brazing alloy component such that the brazing alloy component has sufficient ductility to be formed into a ring-shaped member.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 10, 2009
    Inventor: Terry Lee Howard
  • Patent number: 7603883
    Abstract: An apparatus and method is disclosed for drawing continuous metallic wire having a first diameter to a metallic fiber having a reduced second diameter. A feed mechanism moves the wire at a first linear velocity. A laser beam heats a region of the wire to an elevated temperature. A draw mechanism draws the heated wire at a second and greater linear velocity for providing a drawn metallic fiber having the reduced second diameter.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: October 20, 2009
    Assignee: University of Central Florida
    Inventors: Nathaniel R. Quick, Aravinda Kar, Yonggang Li, Raymond R. McNeice
  • Publication number: 20090200177
    Abstract: A method and process for at least partially forming a medical device that is at least partially formed of a novel metal alloy which improves the physical properties of the medical device.
    Type: Application
    Filed: April 24, 2009
    Publication date: August 13, 2009
    Inventors: JOSEPH G. FURST, Udayan Patel, Raymond W. Buckman, JR.
  • Publication number: 20090191088
    Abstract: A manufacturing method for a composite metal bonding wire and products thereof. A material of Ag and Au is co-melted in a vacuum melting furnace, and then a plurality of trace metal elements are added into the vacuum melting furnace and co-melted with the material to obtain a composite metal ingot. The obtained composite metal ingot is drawn to obtain a composite metal wire. The composite metal wire is then drawn to obtain a composite metal bonding wire with a predetermined diameter.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 30, 2009
    Inventor: Jun-Der LEE
  • Publication number: 20090032151
    Abstract: A magnesium base alloy pipe having high strength and toughness is provided along with a method of manufacturing such pipes. A magnesium base alloy pipe, wherein the pipe is produced by drawing a pipe blank of a magnesium base alloy comprising containing either of the following ingredients (1) or (2): (1) about 0.1-12.0 mass % of Al; or (2) about 1.0-10.0 mass % of Zn and about 0.1-2.0 mass % of Zr. The novel alloy pipe is manufactured by a method comprising steps of providing the above-described pipe blank, pointing the pipe blank, and drawing the pointed pipe blank. The drawing step is executed at a drawing temperature above approx. 50° C.
    Type: Application
    Filed: September 30, 2008
    Publication date: February 5, 2009
    Inventors: Yukihiro OISHI, Nozomu Kawabe, Hitoshi Takahashi, Katsumi Wakamatsu
  • Patent number: 7257979
    Abstract: An apparatus for reforming rod-shaped, electrically conductive and/or magnetizable materials, in particular for drawing and extruding, having the following features: the apparatus has a female mold having a die, which forms the tool for reforming; the apparatus has an inductor of an electric linear motor, by means of which a traveling electric field can be produced; the inductor includes at least one first group at least with first coils; the first coils in the first group are arranged axially next to one another and thus form a channel; using the inductor it is possible to produce a traveling field in the channel which has a magnetic flux density having a gradient in the axial direction of the channel, which has an amplitude of greater than B=1 T.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: August 21, 2007
    Assignee: BL Chemie GmbH & Co. KG
    Inventors: Werner Witte, Lothar Illgen, Peter Bilstein
  • Patent number: 7096554
    Abstract: A system for protecting a stent from contact during loading comprises a stent, a protective sleeve disposed about the stent and a loading tool. The inner diameter of the protective sleeve is greater than the outer diameter of the stent. The protective sleeve has a length longer than that of the stent. The portion of the sleeve extending beyond the length of the stent defines a sleeve extension. The loading tool is positioned about at the stent retaining sleeve of a catheter. The tip region of the loading tool separates the protective sleeve and the stent from one another when the protective sleeve is pulled over the tip region of the loading tool. When the protective sleeve is pulled over the tip region of the loading tool the stent is advanced into a lumen defined by the stent retaining sleeve of the catheter.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: August 29, 2006
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Michael Austin, Daniel C. Perreault, Gabriel S. Sobrino
  • Patent number: 7073363
    Abstract: In order to increase safety with regard to methods for processing drawn materials, the invention proposes a method for processing drawn materials, especially rod- and tube-shaped metal drawn materials in which the drawn material is drawn through drawing dies using a multi-stage drawing unit and the drawn material is supplied continuously to a final production stage after leaving the multi-stage drawing unit.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: July 11, 2006
    Assignee: Schumag AG
    Inventor: Rainer Hergemöller
  • Patent number: 7013695
    Abstract: An apparatus and method is disclosed for drawing continuous metallic wire having a first diameter to a metallic fiber having a reduced second diameter. A feed mechanism moves the wire at a first linear velocity. A laser beam heats a region of the wire to an elevated temperature. A draw mechanism draws the heated wire at a second and greater linear velocity for providing a drawn metallic fiber having the reduced second diameter.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: March 21, 2006
    Inventors: Nathaniel R. Quick, Aravinda Kar, Yonggang Li, Raymond R. McNeice
  • Patent number: 6871523
    Abstract: A microchannel forming device is provided for making microchannels in a wire. The microchannel forming device includes a plurality of dice for receiving a heated wire spaced along a longitudinal axis. Each die has a circumferential surface forming an opening, and teeth projecting normally from the surface and terminating in the opening. As the heated wire is drawn through the opening of each die, the teeth engage the heated wire to form longitudinal microchannels therein.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: March 29, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Makoto Ishizuka, Daniel Hogan, Kazuaki Ohkubo, Mitsuhiko Kimoto
  • Patent number: 6732562
    Abstract: An apparatus and method is disclosed for drawing continuous metallic wire having a first diameter to a metallic fiber having a reduced second diameter. A feed mechanism moves the wire at a first linear velocity. A laser beam heats a region of the wire to an elevated temperature. A draw mechanism draws the heated wire at a second and greater linear velocity for providing a drawn metallic fiber having the reduced second diameter.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: May 11, 2004
    Assignee: University of Central Florida
    Inventors: Nathaniel R. Quick, Aravinda Kar, Yonggang Li, Raymond R. McNeice
  • Patent number: 6715331
    Abstract: Steel wire is drawn from an initial diameter to a desired final or intermediate diameter by the use of a non-linear tapered draft. During the non-linear tapered draft, the wire is drawn through a series of successive dies, reducing the wire diameter to a desired diameter, wherein the drawing strain at each successive die is gradually reduced. The drawing strain is based upon the actual strength of the steel at each die. The wire may also be subjected to a skin pass, reducing the wire by a diameter by less than 4%, following reduction of the wire to either the final or the intermediate diameter.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: April 6, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Michael Gregory Zelin, James Terry Lewis
  • Patent number: 6688148
    Abstract: A method of making high carbon content steel engine components is disclosed. The method includes pre-processing a supply wire of high strength steel having a spheroidized carbide microstructure and high-strength mechanical properties, applying a lubricant on the surface of the supply wire, and cold-forming the blank to substantially reduce or eliminate the need for any additional surface grinding operations.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: February 10, 2004
    Assignee: Defiance Precision Products, Inc.
    Inventors: Raymond C. Hartzell, Jeffrey A. Buck, Stanley Marchewka
  • Patent number: 6647755
    Abstract: An apparatus and method for manufacturing small diameter ultrasonic probes capable of vibrating in a transverse mode that can be used in ultrasonic tissue ablation. The apparatus includes a die, a style puller which is used to engage a functional end of the medical device, and a die room puller which is used to draw the medical device through the die. The die includes a bell-shaped lead-in on a front side of the die and a bell-shaped lead-in on a back side of the die allowing for reversal of the direction of the draw. The method of manufacturing includes heat treating a large diameter medical device, drawing the large diameter device through a die and reversing the draw of the medical device through the die to provide a medical device having a varying diameter along a length of the device. The method is repeated until a final diameter is reached.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: November 18, 2003
    Assignee: OmniSonics Medical Technologies, Inc.
    Inventors: Robert A. Rabiner, Bradley A. Hare, Janniah S. Prasad
  • Publication number: 20020112520
    Abstract: An apparatus and method for drawing round stock to produce tubing includes a drawing machine including a drawing die, as well as an evaporative cooling mechanism adjacent to the drawing machine. The evaporative cooling mechanism defines a passageway in axial alignment with tubing drawn in a straight drawing direction and includes a nozzle for producing a fine fluid for cooling the tubing.
    Type: Application
    Filed: April 23, 2002
    Publication date: August 22, 2002
    Inventor: Danny Rodgers
  • Patent number: 6164105
    Abstract: Measurement of a mechanical characteristic of a long metallic product. The long product is passed through at least one turn of an electromagnetic coil energized with a variable current, the impedance of the electromagnetic coil is measured continuously and the mechanical characteristic of the long product or variations therein are determined by comparing the measured impedance with at least one predetermined impedance value. The method can be used in particular to regulate the production of hyperquenched austenitic steel spring wire containing martensite (.alpha.') by drawing the wire through successive dies. The impedance of the coil through which the wire passes when it leaves the die is measured in order to regulate at least one of the following parameters: the temperature of the die and the wire and the wire speed.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: December 26, 2000
    Assignee: Sprint Metal-Societe de Production Internationale de Trefiles
    Inventors: Michel Laverroux, Pierre Megel
  • Patent number: 5964118
    Abstract: Manufacturing of a sipe blade at a low cost and in a short time, and shortening of a manufacturing period and reduction in cost of a tire vulcanizing mold are achieved. A metal wire material is subjected to rolling and molding processing, and subsequently is subjected to heat treatment to form an intermediate material. The intermediate material is cut off and a hole is formed therein, and the sipe blade is thereby manufactured.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: October 12, 1999
    Assignee: Bridgestone Corporation
    Inventor: Sachiko Kamata
  • Patent number: 5823039
    Abstract: A working method for wire drawing, applicable even to alloys such as Au--Sn and Au--Si which are fragile and which have their tensile strengths lowered rapidly when heated. A die and wire to-be-pulled are heated by a heating device so as to increase the ductility of the wire. On the other hand, finished wire having just been pulled out of the die is cooled by a cooling device so as to increase the tensile strength of the wire. Thus, the wire material can be easily worked owing to the increased ductility, while it can be prevented from breaking after the working, owing to the increased tensile strength based on the immediate cooling. Accordingly, the wire drawing works of the Au--Sn alloy etc. are permitted.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: October 20, 1998
    Assignee: Noge Electric Industries Co., Ltd.
    Inventors: Katsumi Umeda, Kanji Umekawa, Yasushi Umeda, Shiro Kono
  • Patent number: 5787747
    Abstract: Methods and apparatus are disclosed for maximizing the strength and deformability of dimensionally-reduced in-situ-formed composites. According the invention, the temperature of the composite is maintained at less than its recrystallization temperature as it is dimensionally reduced, such as by drawing it through one or more dies in a wire-drawing apparatus. The drawing speed and other parameters may be adjusted, as required, to control composite temperature.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: August 4, 1998
    Assignee: Lucent Technologies, Inc.
    Inventors: Joze Bevk, Gregory S. Boebinger, A. Passner
  • Patent number: 5678443
    Abstract: A takeup drum, particularly for wire drawing machines, having a fluid cooling unit, the drum comprising: a cylindrical body, which is rotatable about a central axis and is supported, through bearings, by the fixed frame of the machine; a chamber that is formed in the body; and a drum cooling unit that is arranged in the chamber. The cooling unit comprises: at least one circular sector that is located proximate to the internal lateral surface of the body and is connected to the fixed frame that supports the cylindrical drum body; and at least one nozzle for introducing the cooling fluid, located proximate to the outer surface of the sector, so as to form a jacket of cooling fluid that flows over the internal lateral surface of the body.
    Type: Grant
    Filed: June 18, 1996
    Date of Patent: October 21, 1997
    Assignee: Mario Frigerio S.p.A.
    Inventors: Marco Frigerio, Luigi Arnoldi
  • Patent number: 5671632
    Abstract: A wire 10 made of metal is shaped into a wire having a diameter of 5 mm by a circular die 12 and then, cut to a plurality of lengths of 500 mm. The wire 10 is heated in hydrogen atmosphere at 800.degree. C. for two hours. Then, the wire 10 is drawn by a plurality of triangular dies 14, 16, 18, and 20 sequentially without winding the wire 10 around a reel. As a result, the wire 10 is shaped into an approximately regular triangular configuration in section. The wire 10 shaped into the approximately regular triangular configuration is cut to a plurality of lengths of 40 mm and then supplied to a predetermined place for a subsequent processing.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: September 30, 1997
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yuichiro Tokunaga, Takeshi Inao
  • Patent number: 5522951
    Abstract: A method for manufacturing a zinc wire includes the following steps: (1) casting a molten zinc ingot into a zinc rod; (2) annealing the zinc rod by heating the zinc rod at a temperature of 250.degree. C.-310.degree. C. for more than 30 minutes, and then cooling the zinc rod to room temperature; (3) extruding the annealed zinc rod at a temperature of 250.degree. C.-310.degree. C. to form a zinc bar; (4) air cooling the zinc bar to room temperature after step (3); (5) immersing the cooled zinc bar into a liquid having a boiling point of about 100.degree. C.-150.degree. C.
    Type: Grant
    Filed: June 12, 1995
    Date of Patent: June 4, 1996
    Inventor: Chang-Shu Chen
  • Patent number: 5282377
    Abstract: When drawing wire, and particularly wire of highly tenacious material which s difficult to deform, such as tungsten or molybdenum, through a die (4), lubricant is applied to the surface of the wire (1) by generating a curtain or sheet of lubricant (6, 16) emitted from a slit-like nozzle (14), and passing the wire essentially transversely through said curtain or sheet of liquid lubricant. Preferably, the wire is preheated before being passed through said sheet of lubricant so that the lubricant will dry on the preheated wire from the inside out prior to the wire being heated to optimum drawing temperature in advance of being pulled through the die. Suitable preheating temperatures are from 100.degree. C. to 500.degree. C., and the thickness of the curtain of lubricant can be between 0.05 to about 0.3 mm, with a wire thickness in the order of about 0.1 mm, permitting drawing speeds which can vary widely and can be about double of previously obtainable drawing speeds.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: February 1, 1994
    Assignee: Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen mbH
    Inventors: Dietmar Illig, Oliver Eierle
  • Patent number: 5230135
    Abstract: A top bar for carding machines formed from an elongated hollow cold drawn annealed profile. The annealing relieves any stresses developed in the profile during the cold drawing and a dimensionally stable top bar results therefrom.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: July 27, 1993
    Assignee: Schubert & Salzer Maschinenfabrik AG
    Inventor: Hans Kuehl
  • Patent number: 5209092
    Abstract: The present invention is a process for drawing and forming a bright wire of a predetermined diameter and cross-section, from stock of a greater diameter. It includes the steps of (a) chemically removing scale from said stock; (b) applying a coating of lubricant carrier to the descaled stock; (c) applying drying air to the stock with the lubricant carrier thereon; (d) applying a lubricant to the carrier-coated stock; (e) drawing the lubricated stock through one or more pressure dies to decrease the diameter of the stock down to the desired predetermined diameter, including lubricating before each die; (f) buffing the drawn stock with a plurality of buffing wheels, said buffing wheels being applied to the drawn stock at a plurality of angles to the direction of travel of the stock to produce bright wire; and, (g) coiling the resulting bright wire into coils for subsequent use. The chemical descaling may be continuous or batch and the remainder of the process is continuous.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: May 11, 1993
    Inventor: Anthony J. Russo
  • Patent number: 5001825
    Abstract: A fabrication process for a guidewire. A guidewire core is provided by drawing down a metal wire in stages. The wire is drawn through a first die to produce a first diameter wire. This first diameter wire is then partially drawn through a second die to provide a second, reduced diameter wire segment at one end of the core wire.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: March 26, 1991
    Assignee: Cordis Corporation
    Inventor: David S. Halpern
  • Patent number: 4924050
    Abstract: A wire electrode for spark-erosive cutting includes a core area and an outer coating. The wire electrode is reduced in cross section in order to achieve a high surface quality characteristic and a high strength characteristic, is subsequently diffusion annealed in an oxidizing atmosphere, is thereafter again reduced in cross section, is exposed to a recrystallizing annealing and is deformed to a final dimension. The wire electrode has, on the one hand, a very even, fine-granular structure and is, on the other hand, provided with a very even and dense surface, which assures an excellent spark transfer.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: May 8, 1990
    Assignee: Berkenhoff GmbH
    Inventor: Hans Hermanni
  • Patent number: 4901550
    Abstract: In a method of manufacturing an extra fine wire, a blank wire cooled to a low temperature is caused to pass through a high humidity atmosphere and, immediately thereafter, is drawn to a diameter such that wire breakage due to the drawing does not occur. Alternatively, a blank wire is caused to pass through a die assembly so arranged as to be immersed in refrigerant, and is drawn within the refrigerant of low temperature, to a diameter with which wire breakage due to the drawing does not occur. The drawn wire material is heated rapidly and is annealed and, thereafter, is cooled rapidly to form an intermediate blank wire. Subsequently, the intermediate wire is drawn at the ordinary temperature.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: February 20, 1990
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Masato Koide, Takuro Iwamura, Tsugio Koya
  • Patent number: 4854032
    Abstract: A method of manufacturing a steel wire with high tensile strength having improved bending and torsional ductility properties useful as a reinforcement wire or cord, especially for rubber products such as tires, comprising providing steel comprising less than 0.015%, preferably less than 0.010%, and most preferably less than 0.008% by weight sulfur and drawing said steel beyond normal drawing limits into a wire having a tensile strength in N/mm.sup.2 of at least 2250-1130 log d where d is the wire diameter in millimeters, and optionally, depositing a covering layer of rubber adherable material such as brass on the drawn wire.
    Type: Grant
    Filed: March 15, 1988
    Date of Patent: August 8, 1989
    Assignee: N.V. Bekaert S.A.
    Inventor: Paul Dambre
  • Patent number: 4818311
    Abstract: During the heating of a moving wire (21) such as when the wire is being aaled, the wire is heated in such a manner that the energy applied to each successive increment of length of the wire is substantially constant. This is accomplished by causing an integral number of half cycles of alternating curent to be applied to each successive increment of length of the wire as the increments are moved from one sheave to another in an annealer (20). In one embodiment, the integral number of half cycles is achieved by adjusting the speed at which the wire is being advanced between two sheaves of the annealer in a manufacturing line. This also may be accomlished by adjusting the distance between the sheaves in an annealing leg of the annealer, or by adjusting the frequency of the applied power source.
    Type: Grant
    Filed: January 21, 1987
    Date of Patent: April 4, 1989
    Assignee: American Telephone and Telegraph Company, AT&T Technologies Inc.
    Inventors: Bruce B. Boehlke, Stephen T. Zerbs
  • Patent number: 4812721
    Abstract: In a magnet wire fabrication process in which the drawing of wire is "in-line" with the enameling process, it is often a requirement that the drawing machines be supplied with electrical power from the utility grid rather than relying on an "in-house," closely regulated supply of electrical power. In such cases, during voltage dips on the grid, the drawing machine motors will slow down while the wires continue to be pulled from the drawing machine at the same speed as before. A wire accumulator is interposed between the drawing machines and the enameling oven to prevent breakage of wire by providing an accumulation of wire to be used in the event of such a voltage dip. The present invention discloses an apparatus for controlling the various channels of the accumulator so as to provide roughly equivalent amounts of wire in each channel so that the integrity of all channels during a power dip is assured. A central operator control station for effecting the desired control is disclosed.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: March 14, 1989
    Assignee: Essex Group, Inc.
    Inventors: Randall C. Graham, James D. Smith, Jr., Jeffrey S. Smith
  • Patent number: 4770722
    Abstract: A method and apparatus for the direct heat treatment of a medium- to high-carbon steel rod in which the formation of martensite is prevented, even if the starting billet contains segregation. A hot-rolled rod is transported on a conveyor in the form of a sequence of non-concentric rings. The rod is then subjected to controlled cooling in a coolant so that the greater part of any austenite in the entire length of the rod is substantially uniformly transformed to a fine pearlite structure. The sequence of non-concentric rings of the rod is next held at a temperature of 450.degree.-630.degree. C. for a period of 60-300 seconds, with the pitch between each ring being made smaller than at the inlet of the conveyor. Accordingly, a pearlite transformation is effected of any residual austenite.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: September 13, 1988
    Assignee: Sumimoto Electric Inductries, Ltd.
    Inventors: Katsuhiko Yamada, Kunio Ojima, Takashi Asakura, Yusuke Yamamori, Yukihiro Nakamura
  • Patent number: 4739640
    Abstract: Apparatus for use in cooling and/or drying or cleaning elongate material, such as drawn wire, tube or strip material, the apparatus comprising a chamber, which may be formed at least in part by a flexible tube, having an inlet and an outlet through which the material enters and leaves the chamber, and the chamber is connected via an outlet passage to a device which creates a sub-atmospheric pressure within the chamber. The sub-atmospheric pressure lowers the evaporation temperature of the cooling liquid which is on the surface of the material which evaporates and cools the material and the sub-atmospheric pressure causes air to flow into the chamber around the material in the region of the outlet and this airflow is at high velocity and wipes the material. The apparatus is preferably located on the end of a structure in which a drawing die is housed.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: April 26, 1988
    Assignee: Hi-Draw Engineering Limited
    Inventors: Michael J. Hurst, Ronald A. Deane
  • Patent number: 4739210
    Abstract: The invention relates to a method of and a device for simultaneously generating heat energy and oscillation energy. In the method heat is generated by induction heating and oscillations are created by means of at least piezoelectric elements. Previously a resonance circuit formed by a series connection of an inductive component and a capacitive, piezoelectric component has been used for the generation of oscillations only. A disadvantage of this kind of circuit has been that the circuit is difficult to control on account of the narrow resonance region of the piezoelectric element. This advantage is avoided in the solution according to the invention in such manner that one and the same resonance circuit formed by a series connection of an inductive and capacitive element generates both heat energy and oscillation energy.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: April 19, 1988
    Assignee: OY Nokia AB
    Inventor: Kari Kirjavainen
  • Patent number: 4678718
    Abstract: The mentioned ceriated tungsten material is a non-radioactive, hardly consumable or nonconsumable matallic electrode material, utilized in the inert gas shield arc welding, plasma welding, cutting, spray coating and smelting. It can also be used as electrodes for laser transmitting source and gas discharging light source. Moreover, the said material can be utilized to make as the cathodic filament used in film deposition by electronic beam under vacuum, etc. This invention employs the technique of powder metallurgy, by strictly controlling the processing parameters to fabricate the ceriated-tungsten material, containing 1.0-4.5%* ceric oxide. Thereby, the difficulties, that had been existed for quite a long time of its processing brittleness in forging the ceriated tungsten material over 1.0%, have now been satisfactorily overcome.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: July 7, 1987
    Assignee: Shanghai Lamp Factory
    Inventor: Ju-Zhen Wang
  • Patent number: 4644769
    Abstract: A multi-stage steel wire drawing machine has, in each stage, two dies and a single drive motor for drawing the wire through the two dies. In a preferred arrangement the dies are mounted side-by-side and an idler wheel used to define part of the wire path between the dies in the stage and a coaxial driven wheel is used to draw the wire through both dies in the stage and to define part of the wire path leading to the next stage. Dry wire lubrication before die entry and water cooling after passage through the dies are disclosed.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: February 24, 1987
    Assignee: Marshall Richards Barcro Limited
    Inventors: John W. Pamplin, Brian R. Astbury
  • Patent number: 4620433
    Abstract: A cooling apparatus for a wire drawing machine including a capstan applying a pulling action on a wire moving through a die and around which the drawn wire is wound, forming turns, includes a caisson in the shape of a circular sector and of tubular section, positioned in the vicinity of the capstan. The caisson is supplied with a cooling liquid and is arranged in such manner as, on the one hand, to direct the cooling liquid toward the wire turns wound on the capstan, and on the other hand, to collect and discharge the liquid after the cooling operation.
    Type: Grant
    Filed: June 12, 1985
    Date of Patent: November 4, 1986
    Assignee: Office Technique des Trefiles
    Inventor: Dominique Petkovic