WO1999041029A1 - Procede et installation de fabrication de mats en treillis - Google Patents

Procede et installation de fabrication de mats en treillis Download PDF

Info

Publication number
WO1999041029A1
WO1999041029A1 PCT/AT1999/000005 AT9900005W WO9941029A1 WO 1999041029 A1 WO1999041029 A1 WO 1999041029A1 AT 9900005 W AT9900005 W AT 9900005W WO 9941029 A1 WO9941029 A1 WO 9941029A1
Authority
WO
WIPO (PCT)
Prior art keywords
longitudinal
strand
stretching
bars
wire
Prior art date
Application number
PCT/AT1999/000005
Other languages
German (de)
English (en)
Inventor
Klaus Ritter
Gerhard Ritter
Original Assignee
Evg Entwicklungs- U. Verwertungsgesellschaft Mbh
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 Evg Entwicklungs- U. Verwertungsgesellschaft Mbh filed Critical Evg Entwicklungs- U. Verwertungsgesellschaft Mbh
Priority to DE59903300T priority Critical patent/DE59903300D1/de
Priority to EP99900389A priority patent/EP0981414B1/fr
Priority to AT99900389T priority patent/ATE227179T1/de
Publication of WO1999041029A1 publication Critical patent/WO1999041029A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B21F9/007—Straining wire to induce a plastic deformation of the wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/08—Making wire network, i.e. wire nets with additional connecting elements or material at crossings
    • B21F27/10—Making wire network, i.e. wire nets with additional connecting elements or material at crossings with soldered or welded crossings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire

Definitions

  • the invention relates to a method and a system for producing lattice mats from longitudinal and transverse bars of hot-rolled steel which cross each other and are welded to one another at the crossing points.
  • EP-A1-0 806 257 a device for improving the yield strength and the ductility of wire is known, in which the wire is drawn over a plurality of staggered, driven rollers of a cold flow device, the bending direction changes between the rollers causing the above-mentioned material properties of the wire can be improved.
  • Two cold flow devices can also be connected in series, one or both cold flow devices being driven. If only one cold flow device is driven, the wire between the two cold flow devices is additionally stretched. The wire can be fed to a device for straightening, cutting and / or welding.
  • the disadvantage here is that, owing to the required drive of the rollers, no other device for improving the material properties can be used, « ⁇ bei missing important information on carrying out the disclosed method.
  • EP-AI-0 806 257 also lacks any information about the methods and devices absolutely necessary for further processing of the wire. When using two cold flow devices, undefined stretching of the wire between the cold flow devices also takes place.
  • EP-Bl 0 371 956 discloses a method and a system for feeding long elements made of round or flat material to a welding machine for grids or gratings, in which the long elements separated from at least one long element after straightening the same with the aid of a feed device a conveying and distribution device, which arranges the long elements according to the desired long wire pitch m of the wire mesh mat to be produced and together m the supply of the mesh welding machine is required. After handing over the long elements to a handover - 2 -
  • the feed device has a roller or rotor straightening device and a continuously operating guillotine shears, with a descaling device and a cold-shaping device in the form of a drawing and / or rolling device being connected upstream of the feed device when processing hot-rolled material. It proves to be disadvantageous that when hot-rolled material is used, either a cold-forming device or at least descaling is required. This document does not contain any statements about the material improvements of the cross wires and their feed to the mesh welding machine.
  • the object of the invention is to avoid the described disadvantage of the known methods and devices and to provide a method and a system of the type specified in the introduction, which makes it possible to improve the mechanical-technological properties of hot-rolled steel without cold forming and to convert this material into lattice mats to process.
  • the invention is also intended to make it possible to use hot-rolled steel, the mechanical and technological properties of which are not subject to microalloying or special heat treatment and quenching, e.g. Temporization have been improved.
  • the method according to the invention is characterized in that the strand of material used to form the longitudinal rods is continuously drawn off from a wire supply via a spill and stretched to improve its mechanical-technological properties and is then trained and cut to length, that the longitudinal rods are then grouped and in accordance with the longitudinal Bar division arranged in the lattice mat to be produced, moved into the area of action of the lattice welding machine and inserted into it, and that the strand of material used to form the cross bars is continuously withdrawn from a wire supply via a spill and stretched to improve its mechanical-technological properties, the cross bar -
  • the strand of material is then passed over a buffer store, first trained and the crossbar separated from the strand of material is fed to the grid welding machine in the welding cycle.
  • the mechanical-technological properties of the longitudinal and transverse bars are preferably improved by increasing the ductility, with an approximately constant tensile strength increasing the yield strength, lowering the ratio of tensile strength to yield strength and increasing the uniform elongation.
  • a system intended for carrying out the method according to the invention with a lattice welding machine for welding a longitudinal bar share with transverse bars, to which a feed and cutting device, a distributor device and a transfer device for the longitudinal bars as well as a feeding and cutting device for the transverse bars are assigned, are characterized in that that at least two devices are provided for producing the longitudinal bars, each of which, in the flow direction, one after the other, a discharge station for a wire supply, at least one stretching device for increasing the ductility of the strand of material, a capstan, a feed device for continuously withdrawing the strand of material from the wire supply by the stretching devices and via the capstan, has at least one dressage and a cutting device for separating the longitudinal bars from the material strand, and that at least one device is provided for producing the cross bars, which is shown in Fl Direction one after the other, a discharge station for the wire supply, at least one stretching device for increasing the ductility of the strand of material, a capstan, a feed device for continuously withdrawing the
  • Each stretching device preferably consists of two rows of bending corner rolls arranged offset from one another, the bending corner rolls of at least one row being adjustable individually or in groups in the direction of the other row, and the diameter of the bending corner rolls being selectable in accordance with the diameter of the strand of material to be stretched.
  • FIG. 1 shows a schematic plan view of a system according to the invention
  • Fig. 2 is a schematic side view of a device for producing cut longitudinal bars
  • Fig. 3 is a schematic side view of a device for producing cut cross bars and for feeding them into the welding line of the welding machine.
  • the system shown in Fig. 1 is used to manufacture meshes from intersecting and welded together at the intersection longitudinal rods and crossbars, the rods made of hot-rolled steel and preferably have a ribbed surface.
  • hot-rolled steel is understood to mean all steel qualities which are produced by rolling out billets on high-speed wire mills with finished blocks, the wire being cooled normally in fan-out rings on the customary finishing stations today and finally being collected into bundles. Without the -, i iiU U.11 ⁇ _j ii l ⁇ u ⁇ j.1-- dil .C .i. ⁇ _ ._ C.-_ I. u -.
  • the system shown has at least two devices 1 for producing longitudinal bars cut to length, a distributor device 2 for the longitudinal bars, a transfer device 3 for transferring the longitudinal bars into a grid welding machine 4 and a device 5 for producing the cross bars and for feeding them into the grid welding machine 4 .
  • the grid welding machine 4 works according to the resistance welding method and has a welding device 6 with a series of electrode pairs 7 (FIG. 3), which are arranged along a horizontal welding line WW running perpendicular to the production direction P1 and for welding the crossing points of the cross bars to the longitudinal bar family serve.
  • Each pair of electrodes 7 consists of a lower electrode and an upper electrode, each below and above the plane of the longitudinal bar family - 5 -
  • the grid welding machine 4 can work according to the invention according to the single-point or the double-spot welding method.
  • the device 1 shown schematically in FIG. 2, for producing cut-to-length longitudinal bars, seen in the flow direction P2, consists of a drain station 8 for receiving a wire supply C, for example a coil, of a horizontal stretching device 9 and of a vertical stretching device 10.
  • the stretching devices 9, 10 each have two rows of a plurality of bending corner rollers 11 arranged offset with respect to one another, the bending corner rollers 11 being adjustable individually and / or in rows relative to one another in accordance with the double arrow P3.
  • the plane defined by the axes of the bending corner rollers 11 of the horizontal stretching device 9 is perpendicular to the plane defined by the bending corner rollers 11 of the vertical stretching device 10.
  • the diameter and the number of bending rollers 11 per row can be selected in accordance with the diameter, the mechanical-technological properties and the chemical composition of the wire material to be processed.
  • the bending corner rolls 11 are advanced until the desired degree of stretching of preferably 2 to 6%, ie a reduction in cross section of 2 to 6% in the wire L is achieved.
  • This stretching improves the mechanical-technological properties of the longitudinal and transverse bars, whereby the tensile strength remains approximately the same or increases only slightly, the yield strength and the uniform elongation increase considerably and the ratio of tensile strength to yield strength decreases.
  • the ductility of the wire is significantly increased by the stretching.
  • the wire can be processed more easily due to the high achievable uniformity of its properties and its low residual stress state after stretching. In order to achieve clear, reproducible results, it has proven to be advantageous to preset the stretching devices to match the diameter and wire qualities and to completely change the stretching devices when changing the diameter - 6 -
  • the stretching devices 9, 10 are followed by a capstan 12 which can be rotated in accordance with the arrow P4 and which absorbs a plurality of wire windings.
  • a capstan 12 which can be rotated in accordance with the arrow P4 and which absorbs a plurality of wire windings.
  • the axes of the bending corner rollers 11 are aligned with the axis of the spill 12.
  • a A preferably liquid drawing agent 14 is applied to the surface of the wire L on all sides of the coating device 13 upstream of the capstan 12.
  • the wire L is drawn off continuously from the wire supply C through the stretching devices 9, 10 and over the capstan 12.
  • the feed device 15 preferably consists of two pairs of feed rollers 16 which can be driven in accordance with the arrow P5, a feed roller also being designed as a measuring wheel 17.
  • the feed device 15 is followed by a vertical dressage 18 and a horizontal dressage 19, each of which consists of two rows of a plurality of dressage rollers 20 arranged offset from one another, the dressage rollers 20 being adjustable individually and / or in rows relative to one another.
  • the diameter and the number of dressage rolls 20 per row can be selected.
  • the dressage rollers 20 are only delivered until the wire L is straightened, but it is essential to ensure that the mechanical-technological properties of the wire L achieved in the stretching devices 9, 10 are not changed undesirably.
  • a high-speed rotor straightening device can be used instead of the two dressages 18 and 19. - 7 -
  • a cutting device 21 which is designed, for example, as flying scissors, is displaceable according to the double arrow P6 and has two interacting knives 22, the line wire L is cut into selectable lengths to form the required longitudinal bars.
  • the device 5 shown schematically in FIG. 3 for producing the cross bars and for feeding the cross bars into the lattice welding machine 4, viewed in the flow direction P2 ', consists of a discharge station 8' for receiving a wire supply C, for example a coil, from a horizontal stretching device 9 '. and from a vertical stretching device 10 '.
  • the stretching devices 9 ', 10' are constructed in accordance with the stretching devices 9 and 10 already described in FIG. 2 and have analog bending rollers 11 which are fed in until the desired degree of stretching, ie a reduction in cross-section of preferably 2 to 5% in the wire Q is achieved.
  • the stretching devices 9 ', 10' are followed by a capstan 12 'which can be rotated in accordance with the arrow P4 and which absorbs a plurality of wire windings.
  • a preferably liquid drawing means 14 is applied on all sides to the capstan 12' with the aid of a coating device 13 ' Surface of the wire Q applied.
  • the wire Q is drawn off continuously from the wire supply C through the stretching devices 9', 10 'and via the capstan 12'.
  • the feed device 15 ' preferably consists of two pairs of feed rollers 16 which can be driven according to the arrow P5.
  • the feed device 15' is followed by a loop store 23 for the transverse wire Q which serves as a buffer store. - 8th -
  • a loop device 24 is connected downstream of the loop memory 23 and has a pair of shot wheels 25 which can be driven in accordance with the double arrow P7, a shot wheel being designed as a measuring wheel 17 '.
  • the cross wire Q is fed through a subsequent horizontal dressage 26 and a vertical dressage 27 to a cross wire shear 28 which cuts the cross wire Q into selectable lengths to form the required cross bars.
  • the dressages 26, 27 are constructed in accordance with the dressages 18 and 19 described in FIG. 2 and each have two rows of dressage rollers 20 arranged offset from one another.
  • the dressage rollers 20 are, analogous to the procedure for straightening the longitudinal wire strand L, only fed until the wire Q is straightened, although it is essential to ensure that the mechanical-technological properties of the wire Q achieved in the stretching devices 9 ', 10' not be changed unintentionally.
  • the cross wire Q can be clamped in a defined position when it is at a standstill.
  • the cross wire according to arrow P8 directly into the welding line WW of the lattice welding machine 4 or into a weft line separated from the welding line WW, in which case the cross-bars cut to length by means of suitable devices, not shown, from the Bullet line to be transported into the welding line WW.
  • the system works in the following way:
  • the longitudinal bars produced in the devices 1 are fed to the distribution device 2 in accordance with the arrow P9 and are stored in this in accordance with the longitudinal bar division required by the mesh mat to be produced.
  • Required devices 1 depends on their production speed in relation to the production speed of the grid welding machine 4 and must ensure that the grid welding machine 4 are always sufficient longitudinal bars.
  • the distributor device 2 conveys the longitudinal bars from the fully illustrated take-over position 2 into the transfer position 2 'shown in dash-dot lines, which is aligned with the center line M-M of the longitudinal bar feed plane of the grid welding machine 4.
  • the distribution device 2 can consist, for example, of a number of distribution wagons which oscillate back and forth between the takeover and transfer position in accordance with the double arrow P10.
  • the longitudinal bar coulter is transferred from the distributor device 2 'in accordance with the arrow P1 to the transfer device 3, which can be moved parallel to the center line M-M in accordance with the double arrow P12.
  • the longitudinal bar family is fed from the transfer device 3 according to the arrow P13 to the welding device 6 of the grid welding machine 4.
  • the crossbars are fed as described in FIG. 3 according to the arrow P8 to the side of the welding line WW of the lattice welding machine 4.
  • the exemplary embodiment shown can be modified in various ways within the scope of the general inventive concept, in particular with regard to the design and implementation of the supply of the longitudinal and transverse bars to the grid welding machine 4.
  • the cross wire can first be wound onto spools in an intermediate store and then fed from these spools to the grid welding machine.
  • a buffer memory is inserted between the feed device 15 and the line wire dressings 18, 19, which guides the line wire in the form of a ring loop and has essentially the same function as that in FIG. 3 described loop memory 23 for the cross wire, and the continuous withdrawal from the wire coil C with the intermittent intermittent insertion of the longitudinal wires into the grid welding machine 4 must coordinate.
  • the mesh welding machine 4 is inserted by a feed device downstream of the dressage. Longitudinal wire cutters can optionally be arranged in front of the welding device of the grid welding machine. It is understood that in this embodiment, the devices described above must be present per line wire, i.e. the number of devices described above must at least correspond to the maximum number of longitudinal elements that can be processed in the lattice welding machine. In order to avoid undesired machine downtimes, this number should preferably be larger.
  • two cross bars can be introduced into the welding line W-W or the weft line of the grid welding machine 4 simultaneously.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Paper (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Metal Rolling (AREA)
  • Sewage (AREA)

Abstract

Procédé et installation de fabrication de mats en treillis formés de tiges longitudinales et transversales d'acier laminé à chaud se croisant mutuellement et soudées entre elles à leurs points de croisement. Le procédé est caractérisé en ce que la ligne de matériau servant à la formation des tiges longitudinales est extraite en continu dans un dispositif (1), via des moyens d'amenée, en provenance d'une réserve de fil, étirée en vue d'améliorer ses propriétés mécaniques technologiques, puis dressée et mise à longueur, après quoi les tiges longitudinales sont disposées dans le mat à fabriquer, par groupes et de façon correspondant à la section des tiges longitudinales, amenées dans la zone de travail de la machine à souder les treillis (4) et introduites dans celle-ci, cependant que la ligne de matériau servant à la formation des tiges transversales est extraite en continu dans un dispositif (5), via des moyens d'amenée, en provenance d'une réserve de fil, étirée en vue d'améliorer ses propriétés mécaniques technologiques, la ligne de matériau des tiges transversales est ensuite guidée, via un stockage tampon, et dressée, après quoi les tiges transversales séparées de la ligne de matériau sont amenées à la machine à souder les treillis, en synchronisation avec les cycles de soudage.
PCT/AT1999/000005 1998-02-10 1999-01-08 Procede et installation de fabrication de mats en treillis WO1999041029A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59903300T DE59903300D1 (de) 1998-02-10 1999-01-08 Verfahren und anlage zum herstellen von gittermatten
EP99900389A EP0981414B1 (fr) 1998-02-10 1999-01-08 Procede et installation de fabrication de mats en treillis
AT99900389T ATE227179T1 (de) 1998-02-10 1999-01-08 Verfahren und anlage zum herstellen von gittermatten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA235/98 1998-02-10
AT0023598A AT407719B (de) 1998-02-10 1998-02-10 Verfahren und anlage zum herstellen von gittermatten

Publications (1)

Publication Number Publication Date
WO1999041029A1 true WO1999041029A1 (fr) 1999-08-19

Family

ID=3485151

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1999/000005 WO1999041029A1 (fr) 1998-02-10 1999-01-08 Procede et installation de fabrication de mats en treillis

Country Status (5)

Country Link
EP (1) EP0981414B1 (fr)
AT (2) AT407719B (fr)
DE (1) DE59903300D1 (fr)
ES (1) ES2143971T3 (fr)
WO (1) WO1999041029A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000051760A1 (fr) * 1999-03-02 2000-09-08 Evg Entwicklungs- U. Verwertungs-Gesellschaft Mb H Procede et installation pour fabriquer des mats de treillis
WO2006007612A1 (fr) * 2004-07-20 2006-01-26 Evg Entwicklungs- U. Verwertungs-Gesellschaft M.B.H. Procede et soudeuse pour la fabrication de treillis
NL2009282C2 (en) * 2012-08-03 2014-02-06 Znd Draad B V Method, apparatus and arrangement for manufacturing reinforcement steel, and reinforcement steel manufactured therewith.
US10926315B2 (en) 2014-04-01 2021-02-23 Antonios Anagnostopoulos Systems and processes for feeding longitudinal wires or rods to mesh producing machines
WO2021186346A1 (fr) * 2020-03-17 2021-09-23 Evg Entwicklungs- Und Verwertungs-Gesellschaft M.B.H. Procédé et appareil de production d'armatures en treillis soudées avec des valeurs de résistance et de dilatation élevées

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326025A (en) * 1964-08-14 1967-06-20 Nishioka Tasaburo Apparatus for alternately bending to draw wire or plate
GB2214846A (en) * 1988-02-20 1989-09-13 Allied Steel Wire Ltd Method and apparatus for treating wire
EP0371956A2 (fr) * 1988-11-30 1990-06-06 EVG Entwicklungs- u. Verwertungs- Gesellschaft m.b.H. Procédé et installation pour amener des éléments longitudinaux à une machine de soudage pour la fabrication de treillis ou de caillebottis
EP0780174A1 (fr) * 1995-12-22 1997-06-25 Ingegneria Industriale S.r.l. Procédé et dispositif pour la production de treillis de renforcements soudés
EP0806257A1 (fr) * 1996-05-10 1997-11-12 V.M.S. Holding A.G. Machine entraînée pour augmenter la ductilité du fil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326025A (en) * 1964-08-14 1967-06-20 Nishioka Tasaburo Apparatus for alternately bending to draw wire or plate
GB2214846A (en) * 1988-02-20 1989-09-13 Allied Steel Wire Ltd Method and apparatus for treating wire
EP0371956A2 (fr) * 1988-11-30 1990-06-06 EVG Entwicklungs- u. Verwertungs- Gesellschaft m.b.H. Procédé et installation pour amener des éléments longitudinaux à une machine de soudage pour la fabrication de treillis ou de caillebottis
EP0780174A1 (fr) * 1995-12-22 1997-06-25 Ingegneria Industriale S.r.l. Procédé et dispositif pour la production de treillis de renforcements soudés
EP0806257A1 (fr) * 1996-05-10 1997-11-12 V.M.S. Holding A.G. Machine entraînée pour augmenter la ductilité du fil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000051760A1 (fr) * 1999-03-02 2000-09-08 Evg Entwicklungs- U. Verwertungs-Gesellschaft Mb H Procede et installation pour fabriquer des mats de treillis
WO2006007612A1 (fr) * 2004-07-20 2006-01-26 Evg Entwicklungs- U. Verwertungs-Gesellschaft M.B.H. Procede et soudeuse pour la fabrication de treillis
NL2009282C2 (en) * 2012-08-03 2014-02-06 Znd Draad B V Method, apparatus and arrangement for manufacturing reinforcement steel, and reinforcement steel manufactured therewith.
EP2862645A1 (fr) * 2012-08-03 2015-04-22 Znd Draad B.V. Procédé, appareil et système de fabrication d'acier d'armature et ledit acier
US10926315B2 (en) 2014-04-01 2021-02-23 Antonios Anagnostopoulos Systems and processes for feeding longitudinal wires or rods to mesh producing machines
WO2021186346A1 (fr) * 2020-03-17 2021-09-23 Evg Entwicklungs- Und Verwertungs-Gesellschaft M.B.H. Procédé et appareil de production d'armatures en treillis soudées avec des valeurs de résistance et de dilatation élevées

Also Published As

Publication number Publication date
ATE227179T1 (de) 2002-11-15
ES2143971T1 (es) 2000-06-01
DE59903300D1 (de) 2002-12-12
AT407719B (de) 2001-05-25
EP0981414A1 (fr) 2000-03-01
EP0981414B1 (fr) 2002-11-06
ES2143971T3 (es) 2003-03-01
ATA23598A (de) 2000-10-15

Similar Documents

Publication Publication Date Title
AT400934B (de) Verfahren und anlage zum zuführen von längselementen aus rund- oder flachmaterial zu einer durchlauf-schweissmaschine für gitter oder gitterroste
AT402033B (de) Verfahren und anlage zum herstellen von bewehrungsgittermatten
EP1009559A1 (fr) Installation pour le dressage, l'ecrouissage et le traitement ulterieur de fil metallique
DE69612069T2 (de) Verfahren und Vorrichtung zur Herstellung von geschweissten Bewehrungsmatten
AT407719B (de) Verfahren und anlage zum herstellen von gittermatten
DE920362C (de) Verfahren und Anlage zur Herstellung von Metall-Halbfabrikaten ver-schiedener Art (Draehte, Barren, Stangen, Platten, Baender, Bleche od. dgl.)
WO2011018063A1 (fr) Procédé pour l'ébavurage multibrin de brins de fil et dispositif correspondant
DE2545171C3 (de) Verfahren zum Herstellen von Drahtgittern
DE19935647A1 (de) Verfahren und Anlage zum Walzen von erwärmtem metallischem Gut
DE1602371A1 (de) Verfahren zum Herstellen eines laenglichen Produktes,wie eines Drahtes,eines Kabels oder einer Stange,aus Kohlenstoffstahl,mit hoher Bruch- und Dehnungsfestigkeit,sowie nach diesem Verfahren hergestellte Produkte
AT408196B (de) Verfahren und anlage zum herstellen von gittermatten
AT395386B (de) Verfahren und anlage zum herstellen zweilagiger geschweisster gitterkoerper
AT523692B1 (de) Verfahren und Vorrichtung zur Herstellung von geschweißten Bewehrungsgittern mit hohen Festigkeits- und Dehnwerten
DE2830890C2 (de) Verfahren zum mit einer Durchmesserabnahme einhergehendem Verlängern von warmgewalztem, einen Ausgangsdurchmesser d" bis bspw. 20 mm aufweisenden Runddraht von 0,1 bis 1 % Kohlenstoffgehalt durch Hochgrad-Kaltumformen und Einrichtung zur Durchführung des Verfahrens
DE2526392A1 (de) Verfahren zur herstellung von walzdrahtringen mit einem vielfachen gewicht eines wirebars
AT214241B (de) Verfahren und Anlage zur Herstellung von geschweißten Drahtgittern
DE19602054C2 (de) Verfahren und Vorrichtung zum Herstellen von Lötstäben aus kupferhaltigem Hartlot
AT405796B (de) Verfahren und anlage zum herstellen von drahtgittermatten
EP0065736B1 (fr) Procédé et appareil pour la fabrication d'une botte d'armature
DE3204563C1 (de) Verfahren und Vorrichtung zum Herstellen von räumlichen Gitterträgern
AT382804B (de) Verfahren und vorrichtung zur herstellung eines bewehrungsbuendels
DE2535480C2 (de) Verfahren und Vorrichtung zum Aussortieren von Unterlängen und/oder zum Schneiden vorbestimmter Längen aus Stabmaterial unterschiedlicher Längen
EP0868236B1 (fr) Procede et installation pour la fabrication de mats en treillis
DE2550044C2 (de) Gitterschweißmaschine für Betonstahlmatten
DE69312146T2 (de) Zuführvorrichtung für elektrische Metallgitterschweissmaschinen

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A1

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

WWE Wipo information: entry into national phase

Ref document number: 1999900389

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 1999900389

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1999900389

Country of ref document: EP