EP1306143A1 - Méthode et dispositif pour la fabrication des profils creux - Google Patents

Méthode et dispositif pour la fabrication des profils creux Download PDF

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Publication number
EP1306143A1
EP1306143A1 EP01125745A EP01125745A EP1306143A1 EP 1306143 A1 EP1306143 A1 EP 1306143A1 EP 01125745 A EP01125745 A EP 01125745A EP 01125745 A EP01125745 A EP 01125745A EP 1306143 A1 EP1306143 A1 EP 1306143A1
Authority
EP
European Patent Office
Prior art keywords
hollow profile
stretch
starting material
station
hollow
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Withdrawn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
EP01125745A
Other languages
German (de)
English (en)
Inventor
Rudolf Bültmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP01125745A priority Critical patent/EP1306143A1/fr
Priority to DE20122242U priority patent/DE20122242U1/de
Priority to AU2002346898A priority patent/AU2002346898A1/en
Priority to US10/487,308 priority patent/US20040250597A1/en
Priority to PCT/EP2002/012052 priority patent/WO2003037539A1/fr
Publication of EP1306143A1 publication Critical patent/EP1306143A1/fr
Withdrawn legal-status Critical Current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 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
    • B21C37/30—Finishing tubes, e.g. sizing, burnishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
    • 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
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0028—Drawing the rolled product

Definitions

  • the present invention relates to a method and an apparatus for Manufacture of hollow profiles with defined cross-sectional shapes and -Dimensioning from one in the form of hollow profiles with larger ones Diameters of existing raw material.
  • the raw material is either in bar form or on a roll wound, in the form of a so-called coil or coil. It is known such Starting materials by pulling to a desired diameter to reduce.
  • the pure drawing process has the disadvantage that it is comparatively high tensile forces have to be applied and therefore light Damage to the starting material can lead to demolition. Furthermore only medium speeds can be achieved.
  • the starting material is also better centricity in the hollow profile difficult to implement.
  • the object of the invention is to provide a method and a device with which very high degrees of reduction at high production speeds can be achieved in the production of hollow profiles of the generic type and at the same time the quality of the end product can be maintained or improved ,
  • the invention proposes on the process side a method for producing hollow profiles with defined cross-sectional shapes and dimensions from starting material in the form of hollow profiles with large diameters, the starting material being shaped to the desired finished profile by combinations of stretch reduction and drawing by means of drawing nozzles ,
  • the inventive method sees the combination of stretch reduction and Move forward. This gives the particular advantage that by skillful Combination of these manufacturing operations on the material to be used for pulling and Pressure forces can be adjusted. So a stretch reduction stage can precede a drawing nozzle cause the material to pass essentially through the nozzle is pressed. Combined with a further stretch reduction level results here an equalization in the forming area.
  • the use of Stretch reduction levels allow an extremely high, almost unlimited Reduction, because any resulting from the stretch reduction
  • the result profile can be made uneven by a subsequent Drawing process can be calibrated. In particular, this affects the centricity of the Hollow profile.
  • According to the described forming combinations of stretch reduction and pulling which can be combined in almost any sequence proposed thermal treatments for intermediate annealing of the material instead of.
  • On the device side there is a furnace, in particular an oven Induction furnace with subsequent cooling area, for example by water.
  • the deformed material is subsequently postformed after the temperature treatment.
  • this Stretch reduction stations that only correct dimensional deviations. But it can generate a targeted reduction in this area too. Are here too further combinations of stretch reduction and pulling within the scope of the invention.
  • the hollow profile can be checked in the usual way, cut to length, but also wound as coils and otherwise treated in the usual way become.
  • the method according to the invention allows extreme reductions at very high ones Speeds that can reach 1000 m / min and more. This is done by the combination of stretch reduction and pulling according to the invention Material demolition even with minor damage to the starting material avoided and the quality of the end material significantly improved.
  • the invention proposes a device for Manufacture of hollow profiles with defined cross-sectional shapes and -Dimensioning from starting material in the form of hollow profiles with large Diameter, characterized by at least one roller arrangement for Implementation of a stretch reduction and at least one drawing nozzle arrangement.
  • rollers are provided in pairs in the stretch reduction stage corresponding reduction passage formed.
  • the next pair of rollers is then with rollers arranged at an angle to the leading pair of rollers positioned. So 90 ° angles can also be any intermediate angles be adjustable.
  • the raw material then goes through in sequence different pairs of rollers and is reduced in cross-section.
  • any shape such as Semicircle, oval, rectangle and the like can be created. It can even Profile tubes and by combining the drawing nozzle with an internal tool also internal profiles, internal grooves and the like are generated.
  • the forming station has an advantageous proposal of the invention successively a roller assembly, a die and a subsequent roller arrangement.
  • the result is a special one advantageous distribution of tensile and compressive forces.
  • the starting material is in the first roller arrangement is drawn and pressed through it into the drawing nozzle, while the roller arrangement arranged behind the drawing nozzle removes the material pulls through the die. This results in the particularly high level of quality in Area of the drawing nozzle and better centricity.
  • an annealing furnace preferably a Induction furnace
  • a cooling station preferably with water application, educated.
  • the device has scissors a run-out driver to cut hollow profile bars from the device to be able to eject.
  • a receiving warehouse for rod-shaped starting material or with 2 denotes a holder for coils with coiled starting material.
  • the material to be deformed becomes one first roller or roller station 3, where there are consecutive Passes through pairs of rollers that form the forming cross section between them. These roles are wholly or partially driven and produce on the Material to be formed Compression forces that reduce the material.
  • the material will then inserted into a drawing nozzle labeled 4, around one behind lying further roll set 5 to carry out further stretch reductions run through. Starting from the drawing nozzle, the material is lying in front of it pressed by the roller set 3, behind it pulled by the roller set 5, so that a force distribution occurs in the drawing nozzle with respect to tension / pressure.
  • 6 is an annealing furnace, for example an induction furnace
  • 7 is a Cooling section, for example using water.
  • a test device 9 with a test device is designated, for example by Eddy current measurements the material quality of the formed hollow profiles checked.
  • a scissors arrangement is designated, which is also preferably has a delivery driver to cut material from the forming station slide. This material is then on a conveyor belt 11 either on a the station 12 set coil wound or by cross transport 14 in Bar material is fed via a belt 15 to bar recesses 16.
  • the Test device 9 detected defective material is automatically in the scrap heap 13 moves.
  • FIG. 2 is a front view, i. H. in the feed direction of the processing material shown device from a base frame, which the Entire facility bears.
  • the machine frame is designated 20.
  • Two Drive motors 21, 22 are via gear 23, 24 on the pairs of rollers 25, 26th switched so that they can be driven accordingly.
  • Corresponding arrangements are located one behind the other in the image plane Formation of a stretch-reducing molding station, to which a drawing nozzle is attached connects and corresponding stretch-reducing molding stations behind it can be arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP01125745A 2001-10-29 2001-10-29 Méthode et dispositif pour la fabrication des profils creux Withdrawn EP1306143A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01125745A EP1306143A1 (fr) 2001-10-29 2001-10-29 Méthode et dispositif pour la fabrication des profils creux
DE20122242U DE20122242U1 (de) 2001-10-29 2001-10-29 Vorrichtung zur Herstellung von Hohlprofilen
AU2002346898A AU2002346898A1 (en) 2001-10-29 2002-10-29 Method and device for the production of hollow sections
US10/487,308 US20040250597A1 (en) 2001-10-29 2002-10-29 Method and device for production of hollow sections
PCT/EP2002/012052 WO2003037539A1 (fr) 2001-10-29 2002-10-29 Procede et dispositif de fabrication de profiles creux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01125745A EP1306143A1 (fr) 2001-10-29 2001-10-29 Méthode et dispositif pour la fabrication des profils creux

Publications (1)

Publication Number Publication Date
EP1306143A1 true EP1306143A1 (fr) 2003-05-02

Family

ID=8179097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01125745A Withdrawn EP1306143A1 (fr) 2001-10-29 2001-10-29 Méthode et dispositif pour la fabrication des profils creux

Country Status (5)

Country Link
US (1) US20040250597A1 (fr)
EP (1) EP1306143A1 (fr)
AU (1) AU2002346898A1 (fr)
DE (1) DE20122242U1 (fr)
WO (1) WO2003037539A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2130700A1 (de) * 1970-06-22 1971-12-30 Schoeller Bleckmann Stahlwerke Verfahren zur Herstellung nahtloser Rohre
US3661005A (en) * 1969-10-29 1972-05-09 Mannesmann Ag Method for producing seamless tubes with small diameters
DE2437441A1 (de) * 1974-08-01 1976-02-19 Mannesmann Roehren Werke Ag Kontinuierliches verfahren zur herstellung sehr langer praezisionsrohre und anlage zur durchfuehrung des verfahrens
DE3540330A1 (de) * 1985-11-11 1987-05-14 Mannesmann Ag Walzwerk, insbesondere rohrkontiwalzwerk

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306771A (en) * 1940-08-27 1942-12-29 Nat Tube Co Method of making metallic tubes
US3678727A (en) * 1970-08-27 1972-07-25 Robert G Jackson Stretch-draw tubing process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661005A (en) * 1969-10-29 1972-05-09 Mannesmann Ag Method for producing seamless tubes with small diameters
DE2130700A1 (de) * 1970-06-22 1971-12-30 Schoeller Bleckmann Stahlwerke Verfahren zur Herstellung nahtloser Rohre
DE2437441A1 (de) * 1974-08-01 1976-02-19 Mannesmann Roehren Werke Ag Kontinuierliches verfahren zur herstellung sehr langer praezisionsrohre und anlage zur durchfuehrung des verfahrens
DE3540330A1 (de) * 1985-11-11 1987-05-14 Mannesmann Ag Walzwerk, insbesondere rohrkontiwalzwerk

Also Published As

Publication number Publication date
AU2002346898A1 (en) 2003-05-12
WO2003037539A1 (fr) 2003-05-08
DE20122242U1 (de) 2004-11-11
US20040250597A1 (en) 2004-12-16

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