ES2065965T3 - PROCEDURE FOR CONTINUOUS STRETCHING OF METAL TUBES. - Google Patents

PROCEDURE FOR CONTINUOUS STRETCHING OF METAL TUBES.

Info

Publication number
ES2065965T3
ES2065965T3 ES89119100T ES89119100T ES2065965T3 ES 2065965 T3 ES2065965 T3 ES 2065965T3 ES 89119100 T ES89119100 T ES 89119100T ES 89119100 T ES89119100 T ES 89119100T ES 2065965 T3 ES2065965 T3 ES 2065965T3
Authority
ES
Spain
Prior art keywords
joints
metal tubes
procedure
strength
continuous stretching
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.)
Expired - Lifetime
Application number
ES89119100T
Other languages
Spanish (es)
Inventor
Ulrich Dr-Ing Reiter
Theodor Ing Grad Niggemann
Peter Dipl-Ing Tietz
Georg Ing Grad Wischmeyer
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.)
KM Kabelmetal AG
Original Assignee
KM Kabelmetal 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 KM Kabelmetal AG filed Critical KM Kabelmetal AG
Application granted granted Critical
Publication of ES2065965T3 publication Critical patent/ES2065965T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Extraction Processes (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

In the continuous drawing of, for example, seamless metal tubes joined together by butt welding, the joints generally do not have the required strength to transmit the drawing forces occurring during the drawing process. The method according to the invention first of all brings the joints up to the same strength as the adjoining tube material and then draws the total length produced to a uniform wall thickness. The equal strength can here preferably be achieved by heat treatment in the region of the joints.
ES89119100T 1988-09-27 1989-10-14 PROCEDURE FOR CONTINUOUS STRETCHING OF METAL TUBES. Expired - Lifetime ES2065965T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3832714A DE3832714C2 (en) 1988-09-27 1988-09-27 Process for the continuous drawing of metal pipes

Publications (1)

Publication Number Publication Date
ES2065965T3 true ES2065965T3 (en) 1995-03-01

Family

ID=6363773

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89119100T Expired - Lifetime ES2065965T3 (en) 1988-09-27 1989-10-14 PROCEDURE FOR CONTINUOUS STRETCHING OF METAL TUBES.

Country Status (6)

Country Link
EP (1) EP0423378B1 (en)
AT (1) ATE116878T1 (en)
AU (1) AU618139B2 (en)
DE (1) DE3832714C2 (en)
ES (1) ES2065965T3 (en)
GR (1) GR3014923T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10023479A1 (en) * 2000-05-10 2001-11-15 Sms Demag Ag Process for producing pipes by pulling over a stopper
DE10151827A1 (en) * 2001-10-20 2003-04-30 Nexans Process for the continuous production of a longitudinally welded metal tube

Family Cites Families (5)

* 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
PL86352B1 (en) * 1973-05-30 1976-05-31
NL8200731A (en) * 1982-02-24 1983-09-16 Estel Demka B V Cutting and welding device for steel wire - includes clamping electrodes which separate coils of wire used for reinforced concrete
DE3805838C2 (en) * 1987-11-24 1997-03-13 Km Europa Metal Ag Method and device for drawing seamless metal pipes
DE3739730C1 (en) * 1987-11-24 1988-09-01 Klaus-Peter Dipl-Ing Uhlmann Method for drawing seamless metal tubes

Also Published As

Publication number Publication date
EP0423378A1 (en) 1991-04-24
EP0423378B1 (en) 1995-01-11
DE3832714A1 (en) 1990-03-29
GR3014923T3 (en) 1995-05-31
ATE116878T1 (en) 1995-01-15
AU618139B2 (en) 1991-12-12
AU4376389A (en) 1991-06-13
DE3832714C2 (en) 1998-07-16

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