EP1121991B1 - Procédé de fabrication de tuyaux métalliques - Google Patents

Procédé de fabrication de tuyaux métalliques Download PDF

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Publication number
EP1121991B1
EP1121991B1 EP00400311A EP00400311A EP1121991B1 EP 1121991 B1 EP1121991 B1 EP 1121991B1 EP 00400311 A EP00400311 A EP 00400311A EP 00400311 A EP00400311 A EP 00400311A EP 1121991 B1 EP1121991 B1 EP 1121991B1
Authority
EP
European Patent Office
Prior art keywords
rollers
forming
metal band
metal
form rollers
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
EP00400311A
Other languages
German (de)
English (en)
Other versions
EP1121991A1 (fr
Inventor
Friedrich Dipl.-Ing. Harten
Michael Meyer
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.)
Nexans SA
Original Assignee
Nexans SA
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
Priority to DE50000912T priority Critical patent/DE50000912D1/de
Priority to ES00400311T priority patent/ES2184682T3/es
Priority to AT00400311T priority patent/ATE229386T1/de
Priority to EP00400311A priority patent/EP1121991B1/fr
Priority to DK00400311T priority patent/DK1121991T3/da
Application filed by Nexans SA filed Critical Nexans SA
Priority to US09/771,635 priority patent/US6513699B2/en
Priority to JP2001024554A priority patent/JP2001246421A/ja
Publication of EP1121991A1 publication Critical patent/EP1121991A1/fr
Application granted granted Critical
Publication of EP1121991B1 publication Critical patent/EP1121991B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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 for metal drawing
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/08—Dies; Selection of material therefor; Cleaning thereof with section defined by rollers, balls, or the like

Definitions

  • the invention relates to a method and an apparatus for producing Metal pipes according to the preamble of claim 1 and claim 3, (see e.g. US-A-3,260,099).
  • the strip edges to be welded are free of grease and oxide and on the other others the strip edges are guided cleanly and exactly during the welding process butt against each other at the same height.
  • the band edges of the trimmed degreased metal strip immediately before forming into a slotted tube.
  • Forming tools made of steel have proven themselves for metal strips made of steel and copper, which consist of pairs of form rollers or form rollers.
  • the metal band will be there gradually deformed into a slotted tube between the form rollers or form rollers.
  • the disadvantage of this known device is the fact that by attacking the Brushing device, the surface of the form rollers or form rollers additionally stressed is removed and not only the cold-welded particles. This causes an additional one Wear on the form rollers or form rollers.
  • the present invention is therefore based on the object, the described To avoid disadvantages and to provide a method and an apparatus in which cold welding of the tools is prevented from the outset.
  • the main advantage of the invention is that the extremely high Hardness of the surface of the form rollers or form rollers the coefficient of friction between the belt and the form roller or the form roller is significantly reduced.
  • the attainable hardness is five times higher than the hardness of conventional titanium nitride layers. It will achieved a coefficient of friction of well below 0.1.
  • FIGS. 1 to 3 Exemplary embodiments explained in more detail.
  • TOG welding arc welding under protective gas
  • the first three form stages 4, 5 and 6 each consist of an upper form roller 4a, 5a and 6a and a lower form roller 4b, 5b and 6b, between which the Aluminum strip 1 is gradually converted into the tube shape.
  • a vertical one Pair of form rollers 7 and a self-contained form ring 8 complete the Molding device 2.
  • rollers 4a, 4b, 5a, 5b, 6a and 6b are suitably made of steel.
  • the Rollers 4a, 5a, 5b, 6a and 6b can, however, be made of plastic, e.g. B. polyethylene, polyamide etc. exist.
  • the roller 4b must always be made of steel, since this is the strongest is claimed.
  • the shaping rollers 4a, 4b, 5a, 5b, 6a and 6b have if they are made of steel, a surface hardness of more than 100 GPa. This extremely high hardness is due to the incorporation of carbon atoms in the crystal lattice of the steel of the forming roller. The process developed for this is published in the magazine " MO metal surface "Carl Hanser Verlag 50th year 4/96 released.
  • FIG. 2 shows a view of the first molding stage 4 with the molding rollers 4a and 4b, between which the edge areas of the unspecified metal strip are extreme be strongly deformed.
  • the hardened surface of the form rollers 4a and 4b is shown in dashed lines and designated 9.
  • FIG. 3 shows a section through a Turkish head that consists of the four rollers 11 a consists.
  • the surface of the rollers also has a hardness of more than 100 GPa.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Forging (AREA)
  • Metal Extraction Processes (AREA)

Claims (4)

  1. Procédé pour la fabrication de tubes métalliques, selon lequel une bande métallique (1) à paroi mince manifestant une tendance à la soudure à froid est formée progressivement en un tube fendu (3), les bords longitudinaux sont alignés bout à bout et soudés l'un à l'autre et le diamètre du tube soudé est réduit, où le formage de la bande métallique en tube fendu se fait par des rouleaux (4a, 4b, 5a, 5b, 6a, 6b) ou des cylindres de formage en métal fonctionnant par paire avec un sens de rotation opposé et où les rouleaux ou cylindres de formage guident la bande métallique à former dans la zone des bords entre eux avec un frottement par roulement, caractérisé par le fait que le formage et le guidage de la bande métallique se font avec des rouleaux (4a, 4b, 5a, 5b, 6a, 6b) ou des cylindres de formage et que la réduction se fait avec des rouleaux, dont la dureté de surface est supérieure à 100 GPa.
  2. Procédé selon la revendication 1, caractérisé par le fait que des atomes de carbone sont en plus incrustés dans la surface des rouleaux ou des cylindres de formage et que la surface présente donc une structure similaire à celle du diamant de grande dureté.
  3. Dispositif pour la fabrication de tubes métalliques, avec un dispositif de formage pour le formage en un tube fendu (3) d'une bande métallique (1) à paroi mince manifestant une tendance à la soudure à froid, un dispositif de soudage pour le soudage des bords longitudinaux du tube fendu ainsi qu'un dispositif pour la réduction du diamètre du tube, où le dispositif de formage est composé de rouleaux (4a, 4b, 5a, 5b, 6a, 6b) ou de cylindres de formage en métal fonctionnant par paire avec un sens de rotation opposé et où les rouleaux ou cylindres de formage guident la bande métallique à former dans la zone des bords entre eux avec un frottement par roulement, caractérisé par le fait que les rouleaux (4a, 4b, 5a, 5b, 6a, 6b) et/ou cylindres de formage présentent une dureté de surface de plus de 100 GPa et que l'équipement pour la réduction du diamètre du tube est un dispositif de calibrage, dont les rouleaux présentent également une dureté de surface de plus de 100 GPa.
  4. Dispositif selon la revendication 3, caractérisé par le fait que des atomes de carbone supplémentaires sont incrustés dans la surface des rouleaux ou des cylindres de formage et que la surface présente donc une structure similaire à celle du diamant de grande dureté.
EP00400311A 2000-02-01 2000-02-01 Procédé de fabrication de tuyaux métalliques Expired - Lifetime EP1121991B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ES00400311T ES2184682T3 (es) 2000-02-01 2000-02-01 Metodo para fabricar tubos de metal.
AT00400311T ATE229386T1 (de) 2000-02-01 2000-02-01 Verfahren zur herstellung von metallrohren
EP00400311A EP1121991B1 (fr) 2000-02-01 2000-02-01 Procédé de fabrication de tuyaux métalliques
DK00400311T DK1121991T3 (da) 2000-02-01 2000-02-01 Fremgangsmåde til fremstilling af metalrør
DE50000912T DE50000912D1 (de) 2000-02-01 2000-02-01 Verfahren zur Herstellung von Metallrohren
US09/771,635 US6513699B2 (en) 2000-02-01 2001-01-30 Process for the production of metal pipes
JP2001024554A JP2001246421A (ja) 2000-02-01 2001-01-31 金属管製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00400311A EP1121991B1 (fr) 2000-02-01 2000-02-01 Procédé de fabrication de tuyaux métalliques

Publications (2)

Publication Number Publication Date
EP1121991A1 EP1121991A1 (fr) 2001-08-08
EP1121991B1 true EP1121991B1 (fr) 2002-12-11

Family

ID=8173532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400311A Expired - Lifetime EP1121991B1 (fr) 2000-02-01 2000-02-01 Procédé de fabrication de tuyaux métalliques

Country Status (7)

Country Link
US (1) US6513699B2 (fr)
EP (1) EP1121991B1 (fr)
JP (1) JP2001246421A (fr)
AT (1) ATE229386T1 (fr)
DE (1) DE50000912D1 (fr)
DK (1) DK1121991T3 (fr)
ES (1) ES2184682T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040250404A1 (en) * 2003-01-14 2004-12-16 Cripsey Timothy J. Process for press forming metal tubes
CN108895213A (zh) * 2018-05-30 2018-11-27 浙江康盛股份有限公司 一种超薄壁管及其加工方法
EP3797890B1 (fr) 2019-09-30 2024-03-27 Nexans Procédé de fabrication de profilés creux minces et de petit diamètre en métal non-ferreux
EP3797891B1 (fr) * 2019-09-30 2023-08-02 Nexans Procédé de fabrication en continu de profilés creux, ondulés par sections, minces, de petit diamètre en metal non ferreux

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260099A (en) * 1964-07-28 1966-07-12 Frank E Elge Tube forming machine
US3349832A (en) * 1964-07-31 1967-10-31 Simplex Wire & Cable Co Method of forming sheathed conductor
US3368379A (en) * 1964-09-17 1968-02-13 Simplex Wire & Cable Co Tube closing device
AT327140B (de) * 1974-05-20 1976-01-12 Plansee Metallwerk Mit hartmetall bestuckte oder zur ganze aus hartmetall bestehende walzrollen sowie verfahren zu ihrer herstellung
JP2842720B2 (ja) * 1991-11-29 1999-01-06 京セラ株式会社 伸線用ダイスおよびその製造方法
JP3382968B2 (ja) * 1992-06-12 2003-03-04 三菱アルミニウム株式会社 管製造用フォーミングロール、管製造方法及び電縫管
JPH0890092A (ja) * 1994-09-19 1996-04-09 Nanotetsuku Kk 無潤滑絞り金型および無潤滑絞り加工方法
JPH1044140A (ja) * 1996-07-31 1998-02-17 Kyocera Corp 加工用ローラー及びワイヤーソー

Also Published As

Publication number Publication date
DE50000912D1 (de) 2003-01-23
ES2184682T3 (es) 2003-04-16
EP1121991A1 (fr) 2001-08-08
US20010042773A1 (en) 2001-11-22
JP2001246421A (ja) 2001-09-11
ATE229386T1 (de) 2002-12-15
US6513699B2 (en) 2003-02-04
DK1121991T3 (da) 2003-03-31

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