EP0388824A3 - Method and apparatus for drawing tubular bodies - Google Patents

Method and apparatus for drawing tubular bodies Download PDF

Info

Publication number
EP0388824A3
EP0388824A3 EP19900105080 EP90105080A EP0388824A3 EP 0388824 A3 EP0388824 A3 EP 0388824A3 EP 19900105080 EP19900105080 EP 19900105080 EP 90105080 A EP90105080 A EP 90105080A EP 0388824 A3 EP0388824 A3 EP 0388824A3
Authority
EP
European Patent Office
Prior art keywords
pressure ring
wall thickness
mandrel
tubular body
tubular bodies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19900105080
Other languages
German (de)
French (fr)
Other versions
EP0388824A2 (en
Inventor
Egon Evertz
Rolf Prof.Dr.-Ing. Seybold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0388824A2 publication Critical patent/EP0388824A2/en
Publication of EP0388824A3 publication Critical patent/EP0388824A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/12—Die holders; Rotating dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/12—Bending tubes using mandrels or the like by pushing over a curved mandrel; by pushing through a curved die
    • B21D9/125—Bending tubes using mandrels or the like by pushing over a curved mandrel; by pushing through a curved die by pushing through a curved die

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Metal Extraction Processes (AREA)
  • Continuous Casting (AREA)

Abstract

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Ziehen von Rohrkörpern 3, insbesondere von rechteckigen Rohr­ körpern 3 mit bogenförmiger Achse 11, wie sie als Kokille zum Stranggießen von Stahl Verwendung finden. Bei der genannten sowie bei weiteren Anwendungen ist die Einhaltung vorgegebener Maße für die Wandstärke des Rohrkörpers 3 von großer Bedeutung. Der gradlinige Antrieb in Richtung auf eine Ziehform in Gestalt eines Druckringes 6 führt infolge der Krümmung des Rohrkörpers 3 zu einer exzentrischen Lage beim Durchgang durch den Druckring 6, so daß die Wandstärke normalerweise unterschiedlich ausfällt. Die Erfindung behebt dies dadurch, daß der Druckring 6 in Abhängigkeit seines Ab­ stand vom hinteren Dornende in eine Schrägstellung gesteuert wird, bei welcher er zentriert durch den Druckring 6 geführt ist, so daß die Wandstärke trotz unterschiedlicher Krafteinwirkung auf den Druckring 6 gleich gehalten werden kann. Eine Steuerfunktion kann für die Lage des Druckringes auf Grund empirischer Messungen des Abstandes des Dorns 2 während seiner Einschubbewegung vom Innenrand des Druckrings 6 ermittelt werden. The invention relates to a method and an apparatus for pulling tubular bodies 3, in particular rectangular tubes body 3 with an arcuate axis 11, such as as a mold for Find continuous casting of steel. At the said as well for other applications, compliance with the specified dimensions for the wall thickness of the tubular body 3 is of great importance. The rectilinear drive towards a drawing shape in the form of a Pressure ring 6 leads to a due to the curvature of the tubular body 3 eccentric position when passing through the pressure ring 6, so that the Wall thickness is usually different. The invention fixes this in that the pressure ring 6 depending on its Ab was steered into an inclined position from the rear end of the mandrel, in which it is centered through the pressure ring 6, so that the wall thickness despite different forces acting on the Pressure ring 6 can be kept the same. A control function can for the position of the pressure ring based on empirical measurements of the Distance of the mandrel 2 during its insertion movement from the inner edge of the pressure ring 6 can be determined.

EP19900105080 1989-03-18 1990-03-17 Method and apparatus for drawing tubular bodies Withdrawn EP0388824A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3908977 1989-03-18
DE19893908977 DE3908977C2 (en) 1989-03-18 1989-03-18 Device for deforming tubular, arcuate tubular bodies

Publications (2)

Publication Number Publication Date
EP0388824A2 EP0388824A2 (en) 1990-09-26
EP0388824A3 true EP0388824A3 (en) 1991-07-03

Family

ID=6376688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900105080 Withdrawn EP0388824A3 (en) 1989-03-18 1990-03-17 Method and apparatus for drawing tubular bodies

Country Status (2)

Country Link
EP (1) EP0388824A3 (en)
DE (1) DE3908977C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128365A1 (en) * 1991-08-27 1993-03-04 Egon Evertz METHOD FOR REFURBISHING COPPER CHILLS FOR STEEL CASTING
DE19750858B4 (en) * 1997-11-17 2008-02-28 Egon Evertz Kg Method for producing a continuous casting mold
DE102005045727B4 (en) 2005-09-23 2009-02-05 Benteler Automobiltechnik Gmbh Deep drawing process and thermoforming machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131803A (en) * 1961-12-04 1964-05-05 Babcock & Wilcox Co Method of and apparatus for cold drawing metal tubes
DE2154226A1 (en) * 1971-10-30 1973-05-03 Kabel Metallwerke Ghh Curved continuous casting mould - made by cold forming
EP0060820A1 (en) * 1981-03-13 1982-09-22 Santrade Ltd. Method and apparatus for production of tubes
GB2151162A (en) * 1983-12-14 1985-07-17 Tubi Italia Spa Method for preparing tubular chills for continuous steel casting plants

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE39156C (en) * C. M. PIELSTICKER in London, Room 186, Suffolk-House, Cannon-Street Machine for cold drawing of bars and tubes
LU77511A1 (en) * 1977-06-09 1979-01-19

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131803A (en) * 1961-12-04 1964-05-05 Babcock & Wilcox Co Method of and apparatus for cold drawing metal tubes
DE2154226A1 (en) * 1971-10-30 1973-05-03 Kabel Metallwerke Ghh Curved continuous casting mould - made by cold forming
EP0060820A1 (en) * 1981-03-13 1982-09-22 Santrade Ltd. Method and apparatus for production of tubes
GB2151162A (en) * 1983-12-14 1985-07-17 Tubi Italia Spa Method for preparing tubular chills for continuous steel casting plants

Also Published As

Publication number Publication date
DE3908977C2 (en) 1995-09-07
EP0388824A2 (en) 1990-09-26
DE3908977A1 (en) 1990-09-27

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