EP0882526A3 - Verfahren und Vorrichtung zur Vermeidung oder Verminderung trompetenförmiger Aufweitungen am Rohrende beim Schrägwalzen von dünnwandigen Rohren - Google Patents

Verfahren und Vorrichtung zur Vermeidung oder Verminderung trompetenförmiger Aufweitungen am Rohrende beim Schrägwalzen von dünnwandigen Rohren Download PDF

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Publication number
EP0882526A3
EP0882526A3 EP98250181A EP98250181A EP0882526A3 EP 0882526 A3 EP0882526 A3 EP 0882526A3 EP 98250181 A EP98250181 A EP 98250181A EP 98250181 A EP98250181 A EP 98250181A EP 0882526 A3 EP0882526 A3 EP 0882526A3
Authority
EP
European Patent Office
Prior art keywords
rolling
reduction
pipe end
walled pipes
blank
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
EP98250181A
Other languages
English (en)
French (fr)
Other versions
EP0882526B1 (de
EP0882526A2 (de
Inventor
Jürgen Dr.-Ing. Pietsch
Torsten Frank
Ingo Baade
Frank Dipl.-Ing. Salomon
Walter Dipl.-Ing. Randerath
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP0882526A2 publication Critical patent/EP0882526A2/de
Publication of EP0882526A3 publication Critical patent/EP0882526A3/de
Application granted granted Critical
Publication of EP0882526B1 publication Critical patent/EP0882526B1/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
    • 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
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur Vermeidung oder Verminderung trompetenförmiger Aufweitungen am Rohrende beim Schrägwalzen dünnwandiger Rohre auf einem Asselwalzwerk. Dabei wird beim Einlauf des vorderen Hohlblockbereiches in das Asselwalzwerk die radiale Umformung der Luppe gegenüber dem stationären Walz-Zustand verkleinert und/oder das Widerstandsmoment des Luppenquerschnitts am Kopfende durch Verringerung des tangentialen Werkstoffflusses erhöht. Ferner betrifft die Erfindung eine Vorrichtung zur Durchführung des Verfahrens.
EP98250181A 1997-06-03 1998-05-26 Verfahren und Vorrichtung zur Vermeidung oder Verminderung trompetenförmiger Aufweitungen am Rohrende beim Schrägwalzen von dünnwandigen Rohren Expired - Lifetime EP0882526B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19724233 1997-06-03
DE19724233A DE19724233C2 (de) 1997-06-03 1997-06-03 Verfahren zur Vermeidung oder Verminderung trompetenförmiger Aufweitungen am Rohrende beim Schrägwalzen von dünnwandigen Rohren und Vorrichtung zur Durchführung des Verfahrens

Publications (3)

Publication Number Publication Date
EP0882526A2 EP0882526A2 (de) 1998-12-09
EP0882526A3 true EP0882526A3 (de) 2002-02-06
EP0882526B1 EP0882526B1 (de) 2003-10-01

Family

ID=7831905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98250181A Expired - Lifetime EP0882526B1 (de) 1997-06-03 1998-05-26 Verfahren und Vorrichtung zur Vermeidung oder Verminderung trompetenförmiger Aufweitungen am Rohrende beim Schrägwalzen von dünnwandigen Rohren

Country Status (3)

Country Link
EP (1) EP0882526B1 (de)
AT (1) ATE250990T1 (de)
DE (2) DE19724233C2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633041B1 (de) 1993-07-01 1999-09-15 Schneider (Europe) GmbH Arzneigeräte für die Behandlung von Blutgefässen mittels ionisierungsbestrahlung
EP0686342B1 (de) 1994-06-10 1998-09-09 Schneider (Europe) GmbH Arzneigerät für die Behandlung eines Teiles von Körpergefäss mittels Ionisierungsbestrahlung
ATE196742T1 (de) 1994-06-24 2000-10-15 Schneider Europ Gmbh Arzneigerät für die behandlung eines teiles eines körpergefässes mittels ionisierungsbestrahlung
US6234951B1 (en) 1996-02-29 2001-05-22 Scimed Life Systems, Inc. Intravascular radiation delivery system
US5855546A (en) 1996-02-29 1999-01-05 Sci-Med Life Systems Perfusion balloon and radioactive wire delivery system
US6676590B1 (en) 1997-03-06 2004-01-13 Scimed Life Systems, Inc. Catheter system having tubular radiation source
US6019718A (en) 1997-05-30 2000-02-01 Scimed Life Systems, Inc. Apparatus for intravascular radioactive treatment
US6413203B1 (en) 1998-09-16 2002-07-02 Scimed Life Systems, Inc. Method and apparatus for positioning radioactive fluids within a body lumen
DE19858955C2 (de) * 1998-12-10 2000-09-28 Sms Demag Ag Verfahren zur Verminderung trompetenförmiger Aufweitungen am vorderen Rohrende
US6352501B1 (en) 1999-09-23 2002-03-05 Scimed Life Systems, Inc. Adjustable radiation source
US6398709B1 (en) 1999-10-19 2002-06-04 Scimed Life Systems, Inc. Elongated member for intravascular delivery of radiation
US6416457B1 (en) 2000-03-09 2002-07-09 Scimed Life Systems, Inc. System and method for intravascular ionizing tandem radiation therapy
DE10334011B3 (de) * 2003-07-25 2004-08-12 Sms Meer Gmbh Walzwerk zur Herstellung eines nahtlosen Rohres
DE10338110A1 (de) * 2003-08-15 2005-03-10 Biomet Deutschland Gmbh Mit Chitosan beschichteter metallischer Gegenstand sowie Verfahren zu dessen Herstellung
DE102022004111A1 (de) 2022-11-03 2024-05-08 Zhozef Rotenberg Verfahren zum Schrägwalzen von Rohlingen mit der im Walzkaliber wirkenden axialen Zugkraft

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1939778A1 (de) * 1969-08-05 1971-02-18 Deutsche Edelstahlwerke Ag Vorrichtung an Schulterwalzwerken zum Streckwalzen von Rohren
DE2219941A1 (de) * 1972-04-20 1973-10-31 Mannesmann Meer Ag Dreiwalzen - schraegwalzwerk
DE3622678A1 (de) * 1985-07-12 1987-01-15 Kocks Technik Verfahren und vorrichtung zum querwalzen nahtloser rohrluppen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428530C5 (de) * 1994-08-12 2005-11-10 Kocks Technik Gmbh & Co. Kg Verfahren und Walzgerüst zum Schrägwalzen von Rohren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1939778A1 (de) * 1969-08-05 1971-02-18 Deutsche Edelstahlwerke Ag Vorrichtung an Schulterwalzwerken zum Streckwalzen von Rohren
DE2219941A1 (de) * 1972-04-20 1973-10-31 Mannesmann Meer Ag Dreiwalzen - schraegwalzwerk
DE3622678A1 (de) * 1985-07-12 1987-01-15 Kocks Technik Verfahren und vorrichtung zum querwalzen nahtloser rohrluppen

Also Published As

Publication number Publication date
EP0882526B1 (de) 2003-10-01
ATE250990T1 (de) 2003-10-15
DE19724233C2 (de) 2003-10-16
EP0882526A2 (de) 1998-12-09
DE59809767D1 (de) 2003-11-06
DE19724233A1 (de) 1998-12-10

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