EP0367358A3 - Verfahren zum Herstellen von Halbzeug - Google Patents

Verfahren zum Herstellen von Halbzeug Download PDF

Info

Publication number
EP0367358A3
EP0367358A3 EP19890250048 EP89250048A EP0367358A3 EP 0367358 A3 EP0367358 A3 EP 0367358A3 EP 19890250048 EP19890250048 EP 19890250048 EP 89250048 A EP89250048 A EP 89250048A EP 0367358 A3 EP0367358 A3 EP 0367358A3
Authority
EP
European Patent Office
Prior art keywords
cross
finished products
section
warm
semi
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.)
Granted
Application number
EP19890250048
Other languages
English (en)
French (fr)
Other versions
EP0367358A2 (de
EP0367358B1 (de
Inventor
Werner Dipl.-Ing. Fritsch
Wilhelm Dipl.-Ing. Nickel
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0367358A2 publication Critical patent/EP0367358A2/de
Publication of EP0367358A3 publication Critical patent/EP0367358A3/de
Application granted granted Critical
Publication of EP0367358B1 publication Critical patent/EP0367358B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/04—Shaping in the rough solely by forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zum Herstellen von Halbzeug mit großem Querschnittsformat als Ausgangs­ material für die Herstellung von warmgefertigten naht­ losen Rohren mit einem äußeren Durchmesser von mehr als 250 mm. Um ein Verfahren zu entwickeln, mit dem man einfach und wirtschaftlich im Hinblick auf eine optimale Umformung passendes Halbzeug zur Herstellung von warm­ gefertigten nahtlosen Rohren mit einem äußeren Durchmesser von mehr als 250 mm herstellen kann, wird vorgeschlagen, daß ein gerader kreiszylindrischer oder regulär prismatischer Ausgangsblock aus stranggegossenem Ausgangsmaterial mit einem Querschnitt F₀ bzw. einem Durchmesser d₀ eines flächengleichen kreisrunden Querschnittes und einer Länge l₀ und einem Verhältnis von l₀ zu d₀ größer eins, auf eine auf den Werkstoff abgestimmte Umformtemperatur erhitzt, danach der durch den Aufheizprozeß entstandene Zunder entfernt und anschließend in Richtung der Längs­ achse mittels Umformwerkzeuge warm auf einen Querschnitt F₁ und auf eine Länge l₁ gestaucht wird, wobei gilt, daß F₁ größer F₀ und l₁ kleiner l₀ ist.
EP89250048A 1988-11-01 1989-10-02 Verfahren zum Herstellen von Halbzeug Expired - Lifetime EP0367358B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3837399 1988-11-01
DE3837399A DE3837399C1 (de) 1988-11-01 1988-11-01

Publications (3)

Publication Number Publication Date
EP0367358A2 EP0367358A2 (de) 1990-05-09
EP0367358A3 true EP0367358A3 (de) 1991-01-09
EP0367358B1 EP0367358B1 (de) 1994-07-27

Family

ID=6366451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250048A Expired - Lifetime EP0367358B1 (de) 1988-11-01 1989-10-02 Verfahren zum Herstellen von Halbzeug

Country Status (3)

Country Link
EP (1) EP0367358B1 (de)
DE (2) DE3837399C1 (de)
ES (1) ES2057096T3 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1927413B1 (de) * 2006-12-01 2009-08-19 Topy Kogyo Kabushiki Kaisha Presseschmiedeverfahren
MY207484A (en) * 2022-12-28 2025-02-28 Hartalega Res Sdn Bhd Permeation resistant glove

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1008709A (en) * 1963-07-04 1965-11-03 Contubind Sa Process for the production of round hollow bodies from blooms
FR2220328A1 (de) * 1973-03-07 1974-10-04 Inst Obrobki Plastycznes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1008709A (en) * 1963-07-04 1965-11-03 Contubind Sa Process for the production of round hollow bodies from blooms
FR2220328A1 (de) * 1973-03-07 1974-10-04 Inst Obrobki Plastycznes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 21 (M-555)(2468) 21 Januar 1987, & JP-A-61 193739 (TOYOTA MOTOR CORP) 28 August 1986, *

Also Published As

Publication number Publication date
EP0367358A2 (de) 1990-05-09
ES2057096T3 (es) 1994-10-16
DE58908102D1 (de) 1994-09-01
EP0367358B1 (de) 1994-07-27
DE3837399C1 (de) 1989-11-16

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