With Tool Inside Hollow Work Patents (Class 72/208)
  • Patent number: 10946424
    Abstract: A cold pilger rolling mill including a front mandrel thrust block that has a distance of at least 30 m from a feed chuck, measured with the feed clamping carriage at the rear reversal point thereof. The distance is measured between the rear (in the feed direction of the hollow) end of the chuck of the front mandrel thrust block and the front (in the feed direction of the hollow) end of the feed chuck of the feed clamping carriage at the rear reversal point thereof.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: March 16, 2021
    Assignee: Sandvik Materials Technology Deutschland GmbH
    Inventors: Christofer Hedvall, Udo Rauffmann, Thomas Froböse
  • Patent number: 10192765
    Abstract: Electronic device processing systems including environmental control of the factory interface are described. One electronic device processing system has a factory interface having a factory interface chamber, a load lock apparatus coupled to the factory interface, one or more substrate carriers coupled to the factory interface, and an environmental control system coupled to the factory interface and operational to monitor or control one of: relative humidity, temperature, an amount of oxygen, or an amount of inert gas within the factory interface chamber. In another aspect, purge of a carrier purge chamber within the factory interface chamber is provided. Methods for processing substrates are described, as are numerous other aspects.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: January 29, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Sushant S. Koshti, Dean C. Hruzek, Ayan Majumdar, John C. Menk, Helder T. Lee, Sangram Patil, Sanjay Rajaram, Douglas Baumgarten, Nir Merry
  • Patent number: 10155257
    Abstract: The state of the art discloses cold rolling mills comprising a roll stand, at least one roll rotatably mounted to the roll stand, a feed clamping saddle for feeding a blank, and a first drive for the feed clamping saddle. Those cold rolling mills have ball spindle drives with a high rate of wear as the drive for the feed clamping saddle. In comparison the object of the present invention is to provide a cold rolling mill whose drive for the feed clamping saddle involves no or only very slight wear and which in addition permits a slow movement of the feed clamping saddle. According to the invention that object is attained by a cold rolling mill which has a direct electromechanical linear drive for the feed clamping saddle.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: December 18, 2018
    Assignee: Sandvik Materials Technology Deutschland GmbH
    Inventor: Thomas Froböse
  • Patent number: 10005321
    Abstract: An axle assembly having an axle, a brake spider and a bearing collar. The axle may have first and second transition regions. The first transition region may extend between first and second cylindrical portions of the axle. The second transition region may extend between second and third cylindrical portions of the axle. The brake spider may be disposed on the second cylindrical portion. The bearing collar may be disposed on the second transition region.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: June 26, 2018
    Assignee: ArvinMeritor Technology, LLC
    Inventors: Michael Andrew Power, J Neil Schunke, William James
  • Patent number: 9718116
    Abstract: The invention relates to a method for the production of hot-finished, particularly hot-rolled, seamless pipes having optimized fatigue properties in the welded state, having an outside diameter of up to 711 mm and a nominal wall thickness of up to 100 mm, made of metal, in particular steel. After hot or finish rolling, a defined pipe cross-section is produced on at least one pipe end across a predetermined length, having tight tolerances for inside and outside diameters, wherein the cross-section can then be welded to the pipe end of another pipe. According to the invention, in a region a wall thickness is created in a first step at the pipe end in question, the thickness being bigger than on the remaining pipe body, wherein the outside diameter is increased and/or the inside diameter is reduced.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: August 1, 2017
    Assignee: VALLOUREC DEUTSCHLAND GMBH
    Inventors: Markus Ring, Gerd Kloster, Oliver Sommerkamp, Caroline Rott, Marion Erdelen-Peppler
  • Patent number: 9446438
    Abstract: A mandrel holder head with release/fastening device of the mandrel for rolling metallic tubes comprises a mandrel holder (1) which accommodates within an internal seat a half collar (2) of externally cylindrical shape through an opening in the side wall. In the internal seat are accommodated both an end part (52) of the mandrel shank and the half collar (2) through the opening. The half collar has an internal cavity with a second longitudinal side opening which accommodates a second part (51) of the shank of diameter smaller than that of the first part (52). The half collar is divided along an axial direction into two cylindrical parts (21, 22) which have different diameters. The locking member (30, 31) of the half collar (2) holds it in the mandrel holder (1) seat in working conditions, while allowing shank release with an axial movement in locked conditions.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: September 20, 2016
    Assignee: DANIELI & C. OFFICINE MECCANICHE S.P.A.
    Inventors: Ettore Cernuschi, Stefano Deplano
  • Patent number: 9283607
    Abstract: A device for corrugating a metal pipe having a corrugation extending transversely of its longitudinal direction. The device has a ring-shaped corrugating head drivable by a first electric motor and is rotatable about its axis in the operating position and a ring-shaped corrugation disc, coupled to the ring-shaped corrugating head, projects radially inwardly from the corrugation head. The corrugation disc is mounted in the corrugation head so as to be adjustable in the radial direction. A support, coupled to the corrugation head, is arranged so as to also be rotatable about the axis of the corrugation head. An adjusting mechanism acting on the corrugation disc is mounted on the corrugation head. The adjusting mechanism serves for radially adjusting the corrugation disc and is adjustable by the support. The support is connected to a second electric motor serving for rotating the support about the axis (A) of the corrugation head.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: March 15, 2016
    Assignee: NEXANS
    Inventors: Holger Schulz, Ralf Egerer
  • Publication number: 20150121982
    Abstract: A manufacturing method of a seamless metal pipe includes: preparing a plurality of mandrel bars in which lengths of work portions which come into contact with a hollow shell during elongating are different from one another; selecting a mandrel bar including a work portion having a length corresponding to the number of stands used in thickness reduction, among the plurality of mandrel bars; inserting the mandrel bar selected in the selecting into the hollow shell; and performing the elongating on the hollow shell into which the mandrel bar is inserted. Moreover, in the elongating, outer diameter reduction is performed by one of a preceding-stage stand group and a succeeding-stage stand group and the thickness reduction is performed by the other of the preceding-stage stand group and the succeeding-stage stand group, or the thickness reduction is performed by both of the preceding-stage stand group and the succeeding-stage stand group.
    Type: Application
    Filed: July 18, 2013
    Publication date: May 7, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventor: Akihito Yamane
  • Patent number: 8956049
    Abstract: A method for producing a fracture-divided component, in particular a connecting rod, with an at least partially coated bore includes the steps of: providing an unfinished component; applying a coating of a bearing material to a bore surface; and working the coating, in order to compensate internal tensile stresses in the coating, before fracture division of the component. Alternatively, the method for producing a fracture-divided component, in particular a connecting rod, having an at least partially coated bore includes the steps of: providing an unfinished component; applying a coating of a bearing material to a bore surface before fracture division of the component; and forming a counter-hardness zone before the application of the coating in order to generate compressive stresses which oppose the internal tensile stresses of the coating.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: February 17, 2015
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Clemens Luchner, Marc Kronenberg, Rolf Koring, Ralf Kowollik
  • Publication number: 20150027190
    Abstract: A method for producing workpieces wherein a substantially rotationally symmetrical workpiece (4, 9, 33), which has a workpiece axis (22), is tentered concentrically relative to an inner mandrel (3, 16) provided inside the workpiece (4, 9, 33), and is reshaped by a process of flow forming by radially applying external reshaping rollers (7). The wall thickness of the workpiece (4) is also reduced in at least some regions. The inner diameter (18, 41) of the workpiece (33) is enlarged by applying inner reshaping rollers (11) of an inner reshaping unit. The inner reshaping rollers (11) are arranged such that the roller axes of rotation and the enveloping cone (20) all intersect at one point on the workpiece axis (22).
    Type: Application
    Filed: September 19, 2013
    Publication date: January 29, 2015
    Inventor: Karl-Heinz Köstermeier
  • Patent number: 8939004
    Abstract: [Problem to be Solved] A device for adjusting the rolling positions of rolling rolls and restraining poor roll-biting of the front edge part of a pipe material rolled by a three-roll mandrel mill includes pressing-down devices 1 (P1 to P6) for moving rolling rolls R1 to R6 in the rolling direction and a control unit 2 for controlling the pressing-down devices 1. Immediately after the front edge part of a pipe material T has begun to be rolled by the rolling rolls disposed on at least one rolling stand of the rolling rolls R1 to R6, the control unit 2 controls the pressing-down device 1 to move the rolling rolls in the closing direction. Preferably, the rolling rolls disposed on at least one rolling stand of the rolling rolls R1 to R6 in the closing direction are moved at a speed of 16 mm/sec or higher using the pressing-down device 1.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: January 27, 2015
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Akihito Yamane, Shigeru Kidani
  • Patent number: 8893539
    Abstract: An embodiment of a method for profiling a tube of given length, whereby, after inserting the tube between at least one pair of rolls having respective coplanar, parallel axes of rotation crosswise to the tube, the rolls are moved onto the tube and pressed gradually against the tube, which, at the same time, is moved axially back and forth.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: November 25, 2014
    Assignee: Vavit S.R.L.
    Inventor: Vittorio Renato Valle
  • Publication number: 20140223984
    Abstract: In order to improve the quality of pipe-like work pieces, a rolling mill has at least two successive consecutive rolling stages that have mandrel rods. A threading line for the mandrel rod of the second rolling stage can lie on an extraction line for the mandrel rod of the first rolling stage. The same advantage can be achieved in a rolling method for the production of pipe-like work pieces, comprising at least two successive consecutive rolling stages, wherein the two rolling stages perform the rolling with the use of mandrel rods. The work piece is brought from the mandrel rod of the first rolling stage onto the mandrel rod of the second rolling stage, without entirely emptying an interior of the work piece and/or without changing the direction of movement of the work piece or braking the work piece in the meantime and accelerating it once again.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 14, 2014
    Applicant: SMS Meer GmbH
    Inventors: Walter HOEFFGEN, Walter KIRCHNER, Norbert THEELEN
  • Publication number: 20140194026
    Abstract: A metallic shell extends in the direction of an axial line and has a threaded portion on its outer circumferential surface for threading engagement with a mounting hole of a combustion apparatus. A process of manufacturing the metallic shell includes a step of forming a metallic shell tubular intermediate having the first tubular portion and the second tubular portion and a rolling step of forming the threaded portion on the metallic shell tubular intermediate. In the rolling step, a bearing member is inserted into the metallic shell tubular intermediate for nipping the metallic shell tubular intermediate in cooperation with working surfaces of the rolling dies, and rolling is performed simultaneously on at least the first tubular portion and the second tubular portion.
    Type: Application
    Filed: October 26, 2012
    Publication date: July 10, 2014
    Applicant: NGK Spark Plug Co. Ltd
    Inventors: Hajime Kawano, Koji Kamikawa
  • Publication number: 20140148327
    Abstract: A separation disc for a centrifugal separator and a method for manufacturing the separation disc are disclosed. The separation disc is of metal material and adapted to be compressed in a stack of separation discs inside a centrifugal rotor for separating a liquid mixture. The separation disc has a truncated conical shape with an inner surface and an outer surface and a plurality of spacing members extending a certain height above at least one of the inner surface and the outer surface for providing interspaces between mutually adjacent separation discs in the stack. The spacing members are of such small size that each one of them has a width which is less than 2 mm along the surface of the separation disc. The surface of the separation disc is configured with a distribution pattern of the small-sized spacing members, in such a way as to provide equidistant interspaces in the compressed disc stack.
    Type: Application
    Filed: August 7, 2012
    Publication date: May 29, 2014
    Applicant: ALFA LAVAL CORPORATE AB
    Inventors: Sven-Åke Nilsson, Peter Thorwid
  • Publication number: 20140096580
    Abstract: A rolling stand (1) with three working rolls (5, 6, 7) defining a rolling axis (X) and comprising a roll-holding cartridge (2) in which said three working rolls (5, 6, 7) with respective chocks are accommodated; wherein a locking device (20) is provided for locking the position of the chocks within the roll-holding cartridge (2), in order to lock the chocks in a predetermined position before carrying out a lateral extraction of the roll-holding cartridge (2) from the rolling stand; wherein said locking device (20) is of the movable type and controlled by control means.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 10, 2014
    Applicant: DANIELI & C. OFFICINE MECCANICHE S.P.A.
    Inventors: ETTORE CERNUSCHI, ARISTIDE GIACOMO BERTELLI, DANILO GALLETTI
  • Patent number: 8601844
    Abstract: A multi-roll mandrel mill comprises a plurality of grooved roll bodies as a roll pass for elongation rolling of a shell and a plurality of roll stands, each having roll shafts and roll chock portions for driving the grooved roll bodies for driving the grooved roll bodies, wherein bearings are internally contained in each grooved roll body. Optimizing the design of roll chock portions for every setup is achieved by a tube-making setup of the mandrel mill, wherein at least one of either or both of the roll shafts and the roll chock portions is replaced with a part(s) having a different shape(s) in addition to changing of the grooved roll bodies. The optimization of the design is effective in preventing underfill and overfill.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: December 10, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventor: Akihito Yamane
  • Patent number: 8596104
    Abstract: The invention relates to a device and a method for producing longitudinal grooves in cylindrical workpieces, especially for producing longitudinal grooves having an irregular profile. The forming process is carried out by means of segmental wheels in a similar manner to that of a rolling method.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: December 3, 2013
    Assignee: Mueller Weingarten AG
    Inventors: Norbert Ziesel, Frank Beig
  • Patent number: 8584498
    Abstract: The present invention provides a mandrel mill and the like that is capable of not only enhancing the elongation ratio of the pipe or tube, but also suppressing a pinhole defect from occurring. The first means of the present invention provides a mandrel mill comprising a plurality of rolling stands in which two grooved rolls R11, R12 are disposed, respectively, the mandrel mill being characterized in that the roll diameter ratio for the first rolling stand and the second rolling stand is set at a value of 4.6 or over. The second means of the present invention provides a mandrel mill comprising a plurality of rolling stands in which three grooved rolls R21, R22 and R23 are disposed, respectively, the mandrel mill being characterized in that the roll diameter ratio for the first rolling stand and the second rolling stand is set at a value of 2.8 or over.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: November 19, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventor: Akihito Yamane
  • Publication number: 20130255342
    Abstract: By using a piercing mill that includes a pusher on the entrance side, a plug on the exit side along a pass line, and a plurality of angled rolls as being provided around the plug so as face to each other, in the case where the maximum diameter of an unsound region consisting of center segregation and porosity in a cross section of a billet is d [mm], piercing-rolling is performed under the condition that the plug nose rolling reduction ratio (TDF) expressed by Formula (1) satisfies Formula (2). TDF=(Bd?D1)/Bd??(1) TDF??0.50×(d/Bd)+0.06??(6) In Formulae (1) and (2), Bd is the billet diameter [mm], and D1 is the opening [mm] between the angled rolls at the plug nose position. Thereby, when piercing-rolling is performed, the occurrence of an inner surface flaw attributable to the center segregation and porosity in the billet can be prevented reliably.
    Type: Application
    Filed: December 6, 2011
    Publication date: October 3, 2013
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kenichi Saitou, Kazuhiro Shimoda, Tomio Yamakawa
  • Patent number: 8544306
    Abstract: A plug includes a front edge portion having a convex curvature; a cylindrical portion having a truly or nearly cylindrical shape; a trunk portion having an outer diameter gradually increasing toward a rear edge thereof; a mandrel joint provided in a rear edge portion of the plug; a lubricant ejection hole running through the trunk portion from the mandrel joint that opens on the surface of the cylindrical portion; and a coating comprising oxides and Fe that is formed on the base metal surface of each of the front edge portion as well as the trunk portion by arc spraying using an iron wire. In this way, the plug can prevent inner surface flaws from occurring in a hollow blank that is deformed by piercing-rolling, and can extend its life without requiring a long time for making it.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: October 1, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Yasuto Higashida, Yasuyoshi Hidaka, Kazuhiro Shimoda, Tomio Yamakawa
  • Patent number: 8528378
    Abstract: A method for producing an ultrathin-wall seamless metal tube, which employs a cold pilger mill of mechatronics drive type including a mechanism to give a feed and a turn angle to a tube material, utilizes a roll having a tapered groove whose diameter gradually increases or gradually decreases from an engaging entry side to a finishing exit side of a pair of rolls, and a tapered mandrel whose diameter similarly gradually increases from the engaging entry side to the finishing exit side to elongate the tube material by reducing a wall thickness while expanding a mid-wall diameter of the tube material. By giving amounts of a turn angle and/or a feed equivalent or nearly equivalent to the forward stroke to the tube material immediately before the start of a backward stroke, it is possible to achieve a further increase in the reduction-rate of rolling, a further reduction of wall thickness, and improvement of dimensional accuracy of the product.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: September 10, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventor: Chihiro Hayashi
  • Patent number: 8490450
    Abstract: A retract mandrel mill, comprising a mandrel mill and an extractor, the mandrel mill including a mandrel bar and being configured to roll a tube blank into which the mandrel bar is inserted, the extractor being configured to extract the mandrel bar from the tube blank that has been rolled in the mandrel mill, wherein the distance between the mandrel mill and the extractor is adjustable, and a method for rolling a tube blank by using the retract mandrel mill. As the result of the adjustable distance, even when a tube blank which is shorter than usual is rolled, there is no need to add an extra extension to the length of the tube blank to be elongation-rolled, and the wear of the mandrel bar can be suppressed so that the tube blank can be rolled efficiently and with high yields.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: July 23, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventor: Akihito Yamane
  • Patent number: 8479549
    Abstract: A method of producing a seamless, tubular product includes centrifugally casting a corrosion resistant alloy into a tubular workpiece having an inner diameter and an outer diameter. The method then removes material from the inner diameter of the workpiece and subjects the workpiece to at least about a 25% wall reduction at a temperature below a recrystallization temperature of the workpiece using a metal forming process. The metal forming process includes radial forging, rolling, pilgering, and/or flowforming.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: July 9, 2013
    Assignee: Dynamic Flowform Corp.
    Inventor: Matthew V. Fonte
  • Patent number: 8464568
    Abstract: A production method of a seamless pipe or tube according to the present invention comprises the steps of applying a lubricant containing carbon to a mandrel bar, producing a material pipe or tube with a mandrel mill using the mandrel bar to which the lubricant is applied, and reheating the material pipe or tube in a reheating furnace, wherein when a temperature of the material pipe or tube is 550° C. or higher and 1000° C. or lower in the reheating step, an oxidizing gas is fed into the material pipe or tube.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: June 18, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Kouji Nakaike, Yasuyoshi Hidaka, Hiroshi Nogami
  • Patent number: 8387430
    Abstract: The present invention relates to a system and method for rolling a seamless tube. The plant comprises a main rolling mill with adjustable rolls for mandrel-rolling a semi-finished tube. The plant also comprises a fixed-roll extracting/reducing mill positioned downstream of the main rolling mill. The extracting/reducing mill is designed to extract the semi-finished tube from the mandrel and reduce its diameter to a predetermined value close to that desired for the finished tube. Finally, the plant comprises a adjustable-roll sizing mill. The sizing mill is positioned downstream of the extracting/reducing mill. This sizing mill is designed to adjust the radial position of the rolls and define the diameter of the outgoing tube.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 5, 2013
    Assignee: SMS Innse SpA
    Inventors: Paolo Marin, Vincenzo Palma, Marco Ghisolfi, Guido Emilio Zanella, Jacopo Grassino, Alberto Vittorio Maria Bregante
  • Patent number: 8375761
    Abstract: A method and a device for producing an internally or externally toothed cup-shaped (body) sheet material component with alternating teeth and grooves that run in parallel to the center axis of the cup, especially of a clutch plate carrier. The method and device allow the use of profile rollers, the rollers controlling the true running, dimensional accuracy and the surface of the cup-shaped sheet material component having an internally and externally profiled wall in the shape of teeth, in such a manner that they guarantee a specifically variable position during production. An untoothed cup-shaped sheet material component is slid onto a pick-up mandrel which has an external toothing corresponding to the internal toothing of the sheet material component to be produced and the external profile is then rolled onto the cup-shaped sheet material component by pressing the cup-shaped sheet material component together with the pick-up mandrel by means of a set of profile rollers while exerting a radial pressure.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: February 19, 2013
    Assignee: Webo Werkzeugbau Oberschwaben GmbH
    Inventor: Axel Norbert Wittig
  • Publication number: 20130008219
    Abstract: A rolling plant (R) for rolling tubes having a multi-stand rolling mill (5) with two or more rolls, in order to implement a controlled speed mandrel rolling process, comprises a hooking and releasing device (61) which is arranged in the inlet area of the rolling mill (5) to cooperate with the rear tang of the mandrel (31) and a hooking and releasing device (71) which is arranged in the outlet area of the rolling mill (5) to cooperate with the front tang of the mandrel (31) in coordinated manner with the first hooking and releasing device (61).
    Type: Application
    Filed: April 3, 2012
    Publication date: January 10, 2013
    Inventors: Ettore Cernuschi, Claudio Maria Scalmana
  • Publication number: 20120312062
    Abstract: A device for rolling of pipe blanks has a planetary cross-rolling mill, an advancing bed, a pipe blank feed, a pipe blank advancing unit that pushes the pipe blanks through the planetary cross-rolling mill, proceeding from the advancing bed, the unit having at least one advancing apparatus, and having a mandrel rod and a mandrel rod holder. The pipe blank feed has an axial pipe blank conveying unit that conveys a pipe blank axially into a readiness position, which is provided axially behind the mandrel rod holder. The advancing apparatus is disposed between the planetary cross-rolling mill and the mandrel rod holder, and has a slide.
    Type: Application
    Filed: June 6, 2012
    Publication date: December 13, 2012
    Applicant: SMS MEER GMBH
    Inventor: Thomas WINTERFELDT
  • Patent number: 8312750
    Abstract: A method for producing a rotationally symmetrical hollow metal part, particularly a shaft. According to the method, bar-shaped ductile solid material is provided, the solid material is heated from about 300° C. below the forging temperature to the forging temperature, the solid material is transversally spline-rolled until weakenings are created in the core zone (3) of the solid material and the sold material is torn open. Two mandrels (5,6) are forcibly introduced into the center of the bar-shaped solid material during the rolling process, and then one mandrel is retracted while the other mandrel continues advancing so as to produce a tubular part. A transversally spline-rolled rotationally symmetrical hollow part, especially a shaft, which is produced according to noted method can be embodied as a transmission shaft, camshaft, drive shaft, output shaft, starter shaft, hollow shaft, or can be a preform for molded parts and the like.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: November 20, 2012
    Assignee: Gesenkschmiede Schneider GmbH
    Inventors: Thomas Koerner, Ernst-Peter Schmitz, Peter Kolbe
  • Patent number: 8312751
    Abstract: A method for producing a high alloy pipe having a minimum yield strength of 758.3 to 965.2 MPa, comprising: preparing a high alloy pipe having controlled amounts of C, Si, Mn, Ni, Cr, Mo, Cu, and N, the balance being Fe and impurities by a hot working or further by a solid-solution heat treatment; and then subsequently subjecting the high alloy pipe to a cold rolling. The cold rolling is performed such that the working ratio Rd, in terms of the reduction of area, in the final cold rolling step falls within a range of larger than 30% and equal to or less than 80%, and the following formula is satisfied: Rd(%)>(MYS?520)/3.1?(Cr+6×Mo+300×N) wherein Rd and MYS signify the working ratio (%) in terms of the reduction of area and the targeted yield strength (MPa), respectively, and Cr, Mo and N signify the mass % of the individual elements.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: November 20, 2012
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Hitoshi Suwabe, Toshihide Ono
  • Publication number: 20120285215
    Abstract: A device to process a blank (3) that includes at least one outer shaping tool (8) that may be radially positioned or radially displaced. An inner shaping tool (9) is mounted co-axially to the main machine axis (x) of the main spindle (1.1). The inner shaping tool (9) may be axially displaced and/or axially positioned with respect to the axial position of the outer shaping tools (8).
    Type: Application
    Filed: January 7, 2011
    Publication date: November 15, 2012
    Applicant: Repkon Machine and Tool Industry and Trade Inc.
    Inventor: Karl-Heinz Köstermeier
  • Publication number: 20120174646
    Abstract: A retract mandrel mill, comprising a mandrel mill and an extractor, the mandrel mill including a mandrel bar and being configured to roll a tube blank into which the mandrel bar is inserted, the extractor being configured to extract the mandrel bar from the tube blank that has been rolled in the mandrel mill, wherein the distance between the mandrel mill and the extractor is adjustable, and a method for rolling a tube blank by using the retract mandrel mill. As the result of the adjustable distance, even when a tube blank which is shorter than usual is rolled, there is no need to add an extra extension to the length of the tube blank to be elongation-rolled, and the wear of the mandrel bar can be suppressed so that the tube blank can be rolled efficiently and with high yields.
    Type: Application
    Filed: March 21, 2012
    Publication date: July 12, 2012
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventor: Akihito YAMANE
  • Patent number: 8215142
    Abstract: An elongation rolling control method is provided which can manufacture a hollow shell of high dimensional accuracy and can suppress rolling problems.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: July 10, 2012
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Hiroyuki Iwamoto
  • Publication number: 20120139236
    Abstract: A pipe element has a circumferential shoulder at one end. The shoulder has an outer diameter greater than the outer diameter of the pipe element. A groove is positioned adjacent to the shoulder. The groove has a floor surface with an outer diameter less than the outer diameter of the pipe element. A bead is positioned contiguous with the groove. The bead has an apex with an outer diameter greater than the outer diameter of the pipe element. A combination of roller tools is used to cold work pipe elements and impart a desired shape to the sidewall in one method of manufacture. In another method, a spin forming tool is revolved in an orbit of increasing diameter within the pipe element captured within a die.
    Type: Application
    Filed: November 30, 2011
    Publication date: June 7, 2012
    Applicant: Victaulic Company
    Inventors: Michael R. Novitsky, Earl Haas, Charles E. Wilk, JR., Scott D. Madara, Anthony J. Cuvo, Douglas R. Dole
  • Patent number: 8163040
    Abstract: A method for manufacturing a cylindrical battery includes allowing a cylindrical battery case (5) with a bottom to contain an electrode plate group, carrying out a groove-forming processing on an outside periphery of an opening of the battery case, disposing a sealing plate in the opening of the battery case through a gasket, and crimping and sealing the end of the opening of the battery case.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: April 24, 2012
    Assignee: Panasonic Corporation
    Inventor: Kazutaka Teramoto
  • Patent number: 8151612
    Abstract: An elongation rolling control method is provided which can manufacture a hollow shell of high dimensional accuracy and can suppress rolling problems.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: April 10, 2012
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Hiroyuki Iwamoto
  • Publication number: 20120079864
    Abstract: A pilger die and a pilger mandrel which are used to produce a dashpot tube which can be used in a nuclear fuel assembly having an outer diameter of 31.75 mm or less and an inner diameter 25.654 mm or less, by processing a reduced expression zirconium alloy tube in two pilgering processes (a first step pass and a second step pass) using a single pilgering apparatus. Furthermore, provided are methods of manufacturing the pilger die and the pilger mandrel, and the dashpot tube for the nuclear fuel assembly. The dashpot tube can be manufactured by the single pilgering apparatus provided with the pilger die and the pilger mandrel.
    Type: Application
    Filed: May 27, 2011
    Publication date: April 5, 2012
    Inventors: SUN DOO KIM, Chan Huyn Park, In Kyu Kim, Ki Bum Park, Seung Hwan Lee
  • Patent number: 8122749
    Abstract: A mandrel mill is provided which can perform elongation rolling with a markedly increased working ratio and dimensional accuracy on a material which is inherently difficult to roll such as a hollow shell made of stainless steel or a thin-walled material. A mandrel mill for manufacturing a mother tube by performing elongation rolling of a hollow shell comprises a plurality of roll stands, having at least one 4-roll stand for wall thickness reduction of a hollow shell and at least one 2-roll stand including the final stand downstream of the 4-roll stand.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: February 28, 2012
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Akihito Yamane
  • Patent number: 8091399
    Abstract: A process for manufacturing a seamless tube which can effectively suppress thickness deviations which are apt to occur in thin-walled seamless tubes is provided. A billet which has been soaked in a heating furnace at a given temperature for a given length of time is subjected to piercing and elongation rolling to form a mother tube, which is then soaked in a reheating furnace at a given temperature for a given length of time and then subjected to sizing to produce a seamless tube with a wall thickness of at most 4 mm. The wall thickness of the tube after sizing is at most 4 mm, the soaking time at the given temperature in the heating furnace is in the range of [billet diameter (mm)×(from 0.14-0.35 )] minutes, and the soaking time at the given temperature in the reheating furnace is in the range of [mother tube wall thickness (mm)×(from 3.0-10.0)] minutes.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: January 10, 2012
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Kenichi Beppu
  • Patent number: 8065901
    Abstract: A method for surface treating a mandrel bar used for hot rolling of high-alloy seamless steel pipe is provided. The method includes heat treating the mandrel bar to develop a scale, and after heat treatment, rolling ordinary steel comprising 8% or less of chromium for at least 50 passes. This achieves a mandrel bar for rolling high-alloy steel possessing both durability and superior resistance to seizure.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: November 29, 2011
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Sumio Iida, Yasuyoshi Hidaka, Mitsuru Yoshizawa, Koji Nakaike
  • Publication number: 20110277526
    Abstract: A mandrel holder head with release/fastening device of the mandrel for rolling metallic tubes comprises a mandrel holder (1) which accommodates within an internal seat a half collar (2) of externally cylindrical shape through an opening in the side wall. In the internal seat are accommodated both an end part (52) of the mandrel shank and the half collar (2) through the opening. The half collar has an internal cavity with a second longitudinal side opening which accommodates a second part (51) of the shank of diameter smaller than that of the first part (52). The half collar is divided along an axial direction into two cylindrical parts (21, 22) which have different diameters. The locking member (30, 31) of the half collar (2) holds it in the mandrel holder (1) seat in working conditions, while allowing shank release with an axial movement in locked conditions.
    Type: Application
    Filed: March 26, 2007
    Publication date: November 17, 2011
    Applicant: DANIELI & C. OFFCINE MECCANICHE S.P.A.
    Inventors: Ettore Cernuschi, Stefano Deplano
  • Patent number: 8047039
    Abstract: A process for stainless-steel pipe production which comprises piercing rolling a raw material stainless steel containing, by mass, Cr: 10-30%, to give a hollow shell, elongating rolling the hollow shell using a mandrel bar, together with a graphite-free lubricant, to give a finishing rolling blank pipe and heating the blank pipe in a reheating furnace and subjecting the same to finishing rolling by sizing rolling to produce a hot-finished pipe, and then subjecting this pipe as a mother pipe to cold working to produce a stainless-steel pipe. In the reheating furnace, the finishing rolling blank pipe is heated to 1000° C. or more and subjected to heating in which an oxidizing gas is blown into the pipe inside, whereby a stainless-steel pipe which is inhibited from forming a carburized layer in the pipe inner surface can be produced. When the finishing rolling by sizing rolling to give a cold working mother pipe is carried out by stretch reducer rolling at 860-1050° C.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: November 1, 2011
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Yasuyoshi Hidaka, Satoshi Matsumoto, Toshihide Ono, Kouji Nakaike, Sumio Iida, Hiroshi Nogami
  • Patent number: 8020422
    Abstract: A tubular product comprises a side section having outer surfaces disposed along a parallelogram and a bottom section formed on one end of the side section. The outer surfaces of the side section are pressure formed by a roller. The tubular product preferably is manufactured from a tubular material by a process comprising the use of a device having a roller that is configured to engage with a side section of the tubular material. The device also comprises a mandrel configured to position the tubular material so that the roller can apply pressure against at least a portion of the outer surfaces of the side section and can extend the side section of the tubular material to form the product.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: September 20, 2011
    Assignee: Kabushiki Kaisha Kunitec
    Inventors: Yukitaka Kunimoto, Toshiya Saito
  • Publication number: 20110219839
    Abstract: A driveshaft assembly includes a tubular slip member having a first spline member having a plurality of splines formed thereon having a first tolerance and a second spline member having a plurality of spline sections. The plurality of spline sections includes a plurality of splines formed thereon having a second tolerance. The second spline member cooperates with the first spline member. A zone is disposed on the second spline member and has a first profile. The zone is disposed adjacent to at least one of the plurality of spline sections of the second spline member, and the first profile defines a clearance relative to the first spline member.
    Type: Application
    Filed: April 14, 2011
    Publication date: September 15, 2011
    Inventors: Nelson Wagner, Bladley S. Jones, Eric M. Fischer, Samuel K. Simons
  • Patent number: 7992417
    Abstract: An aspect of the present invention provides a method for producing an ultra thin wall metallic tube by a cold rolling method with significant wall thickness reduction. In a method for producing the metallic tube with a cold pilger mill, a wall thickness is reduced to perform elongation while a wall thickness center diameter is expanded using a pair of rolls, which has a tapered groove die whose diameter is gradually expanded or reduced from an engaging inlet side of the roll toward a finishing outlet side thereof, and a tapered mandrel bar, whose diameter is gradually expanded from an engaging inlet side of the tapered mandrel bar toward a finishing outlet side thereof.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: August 9, 2011
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Chihiro Hayashi
  • Patent number: 7950126
    Abstract: Improved cored-wire fabrication replaces multiple roller pairs with one or more dies. In the preferred embodiment, flat stock is pulled through a single cylindrical die including an upper tab to ensure and orient the formation of a gap to receive internal powders. Once the powders are introduced, a cylindrical die is used for closure though again, one or more rollers may be used between the powder feed and the die used for closing. In the preferred embodiment, however, a single gap-forming die is used before the powder feed, and a single closing die is used after the powder feed, replacing numerous rollers and other moving parts, thereby dramatically simplifying the apparatus and method of manufacture.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: May 31, 2011
    Assignee: Weld Mold Company
    Inventor: Darryl Hammock
  • Publication number: 20110121569
    Abstract: Connectors for assembling HVAC ducting, and methods for forming the connectors are provided. The connectors include standing-seam connectors and flanged connectors. The flanged connectors can be formed directly on ducting (e.g., spiral ducting). The methods enable the fabrication of the connectors, with exemplary fabrication methods including spin forming and radial expansion.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 26, 2011
    Inventor: Jeffrey Allen Hermanson
  • Publication number: 20110079066
    Abstract: A method and a device for producing an internally or externally toothed cup-shaped sheet material component with teeth that run in parallel to the center axis of the cup, especially of a clutch plate carrier. The method and device allow the production of profile rollers, the rollers controlling the true running, dimensional accuracy and the surface of the cup-shaped sheet material component having an internally and externally profiled wall in the shape of teeth, in such a manner that they guarantee a specifically variable position during production.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 7, 2011
    Applicant: AWEBA WERKZEUGBAU GMBH
    Inventor: Axel Norbert WITTIG
  • Patent number: 7895870
    Abstract: An exemplary embodiment of the invention provides a method for producing an ultra thin wall metallic tube by cold working method with significant wall thickness reduction. In a method for producing the metallic tube with a cold pilger mill according to the invention, cold rolling is performed while tube diameters are being expanded using rolls having tapered groove dies whose calibers increase from an engaging entry side toward a finishing exit side. In a method for producing the metallic tube with a drawing machine according to the invention, cold drawing is performed while the tube diameters are being expanded using a solid die whose calibers increase from an engaging entry side toward a finishing exit side and a plug of a tapered mandrel bar whose diameters increase from an entry side of the die toward an exit side. In the metallic tube producing method, a maximum diameter of the plug or tapered mandrel bar may be larger than an outside diameter of the mother tube.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: March 1, 2011
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Chihiro Hayashi