EP1153671A3 - Method for the manufacture of tubes by drawing over a mandrel - Google Patents

Method for the manufacture of tubes by drawing over a mandrel Download PDF

Info

Publication number
EP1153671A3
EP1153671A3 EP01250060A EP01250060A EP1153671A3 EP 1153671 A3 EP1153671 A3 EP 1153671A3 EP 01250060 A EP01250060 A EP 01250060A EP 01250060 A EP01250060 A EP 01250060A EP 1153671 A3 EP1153671 A3 EP 1153671A3
Authority
EP
European Patent Office
Prior art keywords
mandrel
tubes
manufacture
drawing over
pipe string
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Withdrawn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
EP01250060A
Other languages
German (de)
French (fr)
Other versions
EP1153671A2 (en
Inventor
Peter Dipl.-Ing. Kalkenings
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.)
KALKENINGS, PETER, DIPL.-ING.
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 EP1153671A2 publication Critical patent/EP1153671A2/en
Publication of EP1153671A3 publication Critical patent/EP1153671A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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

Abstract

Die Erfindung betrifft ein Verfahren zum Herstellen von Rohren durch Ziehen über einen Stopfen, wobei vor dem Ziehen mehrere Ausgangsrohre Stoß an Stoß miteinander verschweißt werden und der so gebildete Rohrstrang anschließend zur Verminderung der Wanddicke und des Durchmessers durch einen Ziehring gezogen wird. Hierbei werden die Rohrenden vor dem Verschweißen zum Rohrstrang zur Beseitigung der im Endbereich vorhandenen Exzentrizität kalibriert, wobei die Bedingung gilt: S0-E>SW >S1

Figure 00000001
Figure 00000002
The invention relates to a method for producing pipes by pulling over a stopper, several output pipes being welded to one another before pulling and the pipe string thus formed is then pulled through a pull ring to reduce the wall thickness and the diameter. Here, the pipe ends are calibrated before welding to the pipe string to eliminate the eccentricity present in the end area, whereby the condition applies: S 0 E> S W > S 1
Figure 00000001
Figure 00000002
EP01250060A 2000-05-10 2001-02-23 Method for the manufacture of tubes by drawing over a mandrel Withdrawn EP1153671A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000123479 DE10023479A1 (en) 2000-05-10 2000-05-10 Process for producing pipes by pulling over a stopper
DE10023479 2000-05-10

Publications (2)

Publication Number Publication Date
EP1153671A2 EP1153671A2 (en) 2001-11-14
EP1153671A3 true EP1153671A3 (en) 2002-07-24

Family

ID=7641918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01250060A Withdrawn EP1153671A3 (en) 2000-05-10 2001-02-23 Method for the manufacture of tubes by drawing over a mandrel

Country Status (2)

Country Link
EP (1) EP1153671A3 (en)
DE (1) DE10023479A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131926A1 (en) * 2013-11-20 2015-05-21 Danieli Off Mecc TUBE DRAWING MACHINE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2122935A1 (en) * 1971-05-10 1972-11-23 Stahl- und Röhrenwerk Reisholz GmbH, 4000 Düsseldorf Continuous pipe drawing - using floating plug
US4856703A (en) * 1987-11-24 1989-08-15 Uhlmann Klaus P Method for drawing seamless metal tubing particularly copper tubing under inclusion of a floating mandrel and a diameter reducing die
EP0423378A1 (en) * 1988-09-27 1991-04-24 KM Europa Metal Aktiengesellschaft Method of continuously drawing metal tubes
DE4206397A1 (en) * 1992-02-29 1993-09-02 Harf Hans Method for stretch-reducing of steel rolling mill loops - is used in multi-stand mill, each succeeding stand moves at higher speed than previous one

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2122935A1 (en) * 1971-05-10 1972-11-23 Stahl- und Röhrenwerk Reisholz GmbH, 4000 Düsseldorf Continuous pipe drawing - using floating plug
US4856703A (en) * 1987-11-24 1989-08-15 Uhlmann Klaus P Method for drawing seamless metal tubing particularly copper tubing under inclusion of a floating mandrel and a diameter reducing die
EP0423378A1 (en) * 1988-09-27 1991-04-24 KM Europa Metal Aktiengesellschaft Method of continuously drawing metal tubes
DE4206397A1 (en) * 1992-02-29 1993-09-02 Harf Hans Method for stretch-reducing of steel rolling mill loops - is used in multi-stand mill, each succeeding stand moves at higher speed than previous one

Also Published As

Publication number Publication date
EP1153671A2 (en) 2001-11-14
DE10023479A1 (en) 2001-11-15

Similar Documents

Publication Publication Date Title
DE60224119D1 (en) Metal pipe and process for its production
WO2001081021A3 (en) Hydroforming a tubular structure of varying diameter from a tubular blank using electromagnetic pulse welding
AU5275790A (en) Improvements relating to flexible tubular structures, methods of manufacturing same and pipes and pipe linings formed from said flexible tubular structures
ES2186778T3 (en) METHOD OF SPECIFIC COUPLING OF THE CAPERUZA OF THE 5 'END OF A FRAGMENT OF mRNA AND PREPARATION OF THE mRNA AND THE COMPLETE cDNA.
ATE357992T1 (en) METAL TUBE BODY AND METHOD FOR PRODUCING IT
CA2537595A1 (en) Method of forming axles with internally thickened wall sections
GB2038688A (en) Pipe unions
DE60144473D1 (en) METHOD AND DEVICE FOR CLADDING WASTEWATER CHANNELS AND CONNECTING, SIMULTANEOUS FILLING WITH FILLING MATERIAL
EP1153671A3 (en) Method for the manufacture of tubes by drawing over a mandrel
US1764561A (en) Method and the means for shaping tubes
EP0900912A3 (en) Drill pipe and method for making the same
US1285849A (en) Universal coupling.
DE602005000933D1 (en) METHOD FOR PRODUCING A WELDED CONNECTION BETWEEN A TUBE AND MULTIPLE TUBES AND A DEVICE MADE BY SUCH A METHOD
EP1125654A3 (en) Mechanical tube expander
EP2075404A3 (en) Device for applying mortar
ATE203940T1 (en) METHOD AND DEVICE FOR PRODUCING A SHAFT FROM A PIECE OF TUBE
WO2005102555A1 (en) A method of producing thin walled metal tubes with thickened ends
GB195278A (en) Improved method for bending or curving copper and like pipes
ATE319526T1 (en) METHOD AND DEVICE FOR FORMING PIPES
DE50214892D1 (en) Method and device for producing a composite pipe
SU603470A1 (en) Method of joining tubular articles
US1415415A (en) Drawn pipe and process of stretching same
RU2001105331A (en) METHOD OF COMBINED FIXING OF PIPES IN PIPE LATTICES
BE367030A (en)
SU740356A1 (en) Method of producing bead on pipelines

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20021121

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KALKENINGS, PETER

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KALKENINGS, PETER

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KALKENINGS, PETER, DIPL.-ING.

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KALKENINGS, PETER, DIPL.-ING.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030902