US3366767A - Production of seamed metal tubes - Google Patents

Production of seamed metal tubes Download PDF

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Publication number
US3366767A
US3366767A US385164A US38516464A US3366767A US 3366767 A US3366767 A US 3366767A US 385164 A US385164 A US 385164A US 38516464 A US38516464 A US 38516464A US 3366767 A US3366767 A US 3366767A
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US
United States
Prior art keywords
tubes
strips
metal
production
unit
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
US385164A
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English (en)
Inventor
Corta Hubert De
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.)
Lorraine Escaut SA
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Lorraine Escaut SA
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Filing date
Publication date
Application filed by Lorraine Escaut SA filed Critical Lorraine Escaut SA
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    • 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
    • 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 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/083—Supply, or operations combined with supply, of strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K13/00—Welding by high-frequency current heating
    • B23K13/01—Welding by high-frequency current heating by induction heating
    • B23K13/02—Seam welding
    • B23K13/025—Seam welding for tubes

Definitions

  • FIG. 2a PRODUCTION OF SEAMED METAL TUBES Filed July 27', 1964 I 4 Sheets-Sheet 1 FIG. 2a
  • a shaping device in which the unwinding band of metal is first shaped to form an open tube, a Welding position, where the open tube is welded, the edges of the metal being brought together, and a gauging mill in which the tube, which may first have been heated, is reduced to its correct size, after which it can be
  • the invention relates to an installation for the continuous production of seamed metal tubes, having as its distinguishing feature the fact that, from a single band of metal, it can cut, shape, Weld, reduce to size and finaly divide off several runs of tubing travelling along separate parallel paths.
  • this installation comprises, in its essentials, a cutting position, where the metal is cut into parallel horizontal strips; a positioning unit, in which these strips are suitably spaced apart and where certain of them may be turned over so that the cutting burrs on all the strips may turn the same way; a multiple former, the paths through which are spaced in the same way as the strips, the shaping being independently regulated for each path; a multiple welding unit; a unit for cleaning up the weld from the outside of the various tubes; possibly a multi-path gauging unit; and, iinally, a shearing unit.
  • the purpose of turning over certain of the strips cut from the original single band is to ensure that all the cut- 3,366,767 Patented Jan. 30, 1968 ice ting burrs resulting from cutting the band into strips are, for example, turned upwards.
  • the cutting burrs thus come to lie on the inside of the various tubes that are being formed simultaneously.
  • the welding of the tubes may be carried out by any known method, such as induction or contact welding. It is also possible to incorporate in the installation whatever tube cooling or heating arrangements are required for applying any particular method of welding and of finishing the tubes after welding.
  • FIGURES 1a, 1b and 1c are diagrammatic plan views of the feed, intermediate and delivery sections of the installation, respectively.
  • FIGURES 2a, 2b and 2c are side elevations correspond ing respectively to FIGURES 1a, 1b and 10.
  • a band 1 of sheet metal running horizontally is continuously fed forward and suitably presented to the equipment by guide members 2.
  • the band 1 passes through a cutting unit 3, in which shears 3a divide it into three strips, B1, B2 and B3, of which B1 and B3 lie outside the strip B2, one on either side. Any burrs that are inevitably formed in course of shearing are turned upwards (standing out from the upper face) on the strip B2 and downwards (standing out from the underside) on the strips B1 and B3.
  • a turning and positioning unit 4 is employed for turning over the strips B1 and B3 and for obtaining the proper relative spacing between the strips B1, B2 and B3, a turning and positioning unit 4 is employed.
  • This consists essentially of two guide rollers, 4a and 4b, mounted on vertical spindles.
  • Strip B1 which makes contact in a vertical plane with the guide roller 4a, thus passes into the vertical as it comes level with this guide roller, beyond which it continues turning over until its. two faces have been transposed.
  • the unit 4 After passage through the unit 4, not only do the three strips B1, B2 and B3 carry their cutting burrs on their upper faces, but they are also all spaced at the same relative distance e apart.
  • a forming (or rolling) unit 5 is providedwhich, as with the other units in the production line, will not be described in detail here-differs from monotube units of this kind only in being designed to form three tubes at a time, all its shaping and guiding members being provided in triplicate and judiciously laid out so as to keep the transverse dimension as small as possible and well below three times the corresponding dimension of a monotuoe forming unit.
  • the unit comprises a receiving guide system 6 (FIG.
  • terminal pairs of forming rollers, F1, F2 and F3, at the delivery end of the forming unit, corresponding respectively to blanks T1, T2 and T3, have their axes oifset in a staggered relationship along spaced parallel lines, such an arrangement also making it possible for the final shaping pass on each of the three tubes to be independently regulated.
  • the tubes are guided independently by guides 9a and enter a welding unit 9, where they are welded at points s1, s2 and s3 respectively, these points being staggered longitudinally, with the aid of weld rollers S1, S2 and S3.
  • the welding may be carried out by the radio-frequency method, for example, by induction or by contact, power being supplied through a transformer 10.
  • the tubes Upon leaving the welding unit, the tubes go to a trimming unit, where trimmers 11, 12 and 13 finish off the weld on the outside of the tubes. These trimmers are characteristically staggered longitudinally.
  • the formed tubes T1, T2 and T3 next pass in FIGS. and 2c into a cooling unit, 14 (consisting of sprinkler arrays, for example), and then to a gauging unit comprising a certain number of vertical housings such as that numbered 15, horizontal housings such as that numbered 16 and Turks head straightening units such as that numbered17.
  • the rollers of the horizontal housing 16 and some of the rollers of the straightening units 17 are longitudinally oifset in a staggered relationship.
  • the three runs of tubing T1, T2 and T3 pass to a dividing head 13, where they are cut by shearing means into lengths as required.
US385164A 1963-07-29 1964-07-27 Production of seamed metal tubes Expired - Lifetime US3366767A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR943032A FR1377333A (fr) 1963-07-29 1963-07-29 Perfectionnements à la fabrication de tubes

Publications (1)

Publication Number Publication Date
US3366767A true US3366767A (en) 1968-01-30

Family

ID=8809401

Family Applications (1)

Application Number Title Priority Date Filing Date
US385164A Expired - Lifetime US3366767A (en) 1963-07-29 1964-07-27 Production of seamed metal tubes

Country Status (9)

Country Link
US (1) US3366767A (de)
AT (1) AT262731B (de)
BE (1) BE650814A (de)
CH (1) CH424692A (de)
DE (1) DE1452360B2 (de)
ES (1) ES302534A1 (de)
FR (1) FR1377333A (de)
GB (1) GB1039409A (de)
NL (1) NL140441B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860781A (en) * 1972-06-06 1975-01-14 Voest Ag Method of and apparatus for continuously producing welded light construction beam sections, in particular I- or T-beams

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2532901C2 (de) * 1975-07-23 1981-09-17 Estel Hoesch Werke Ag, 4600 Dortmund Rohrschweißanlage
ITMI20060798A1 (it) * 2006-04-21 2007-10-22 Olimpia 80 Srl Apparecchiatura per la produzione di tubi comprendente due linee di produzione affinancate
EP2669022A1 (de) * 2012-05-29 2013-12-04 Passat Stal S.A. Verfahren zur Herstellung von längsnahtgeschweißten Rohren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US759480A (en) * 1903-11-09 1904-05-10 Isaac J Shifley Eaves-trough-forming machine.
US2631361A (en) * 1950-05-08 1953-03-17 Bundy Tubing Co Method of making welded tubing from strip metal stock
US3230336A (en) * 1962-06-04 1966-01-18 Kocks Gmbh Friedrich Method and apparatus for the continuous manufacture of welded metal tubes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US759480A (en) * 1903-11-09 1904-05-10 Isaac J Shifley Eaves-trough-forming machine.
US2631361A (en) * 1950-05-08 1953-03-17 Bundy Tubing Co Method of making welded tubing from strip metal stock
US3230336A (en) * 1962-06-04 1966-01-18 Kocks Gmbh Friedrich Method and apparatus for the continuous manufacture of welded metal tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860781A (en) * 1972-06-06 1975-01-14 Voest Ag Method of and apparatus for continuously producing welded light construction beam sections, in particular I- or T-beams

Also Published As

Publication number Publication date
GB1039409A (en) 1966-08-17
ES302534A1 (es) 1965-03-16
NL140441B (nl) 1973-12-17
DE1452360B2 (de) 1970-04-09
FR1377333A (fr) 1964-11-06
CH424692A (fr) 1966-11-30
NL6408608A (de) 1965-02-01
BE650814A (de) 1965-01-22
AT262731B (de) 1968-06-25
DE1452360A1 (de) 1969-03-27

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