EP0582905A2 - Fibre en fil d'acier ou en feuillard pour armature de béton ou similaire et dispositif pour la fabrication de telles fibres - Google Patents

Fibre en fil d'acier ou en feuillard pour armature de béton ou similaire et dispositif pour la fabrication de telles fibres Download PDF

Info

Publication number
EP0582905A2
EP0582905A2 EP93112124A EP93112124A EP0582905A2 EP 0582905 A2 EP0582905 A2 EP 0582905A2 EP 93112124 A EP93112124 A EP 93112124A EP 93112124 A EP93112124 A EP 93112124A EP 0582905 A2 EP0582905 A2 EP 0582905A2
Authority
EP
European Patent Office
Prior art keywords
fiber
embossing
section
fibres
fibers
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Withdrawn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
EP93112124A
Other languages
German (de)
English (en)
Other versions
EP0582905A3 (en
Inventor
Marian Grondziel
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.)
Vulkan-Harex Stahlfasertechnik & Co KG GmbH
Vulkan Harex Stahlfasertechnik GmbH and Co KG
Original Assignee
Vulkan-Harex Stahlfasertechnik & Co KG GmbH
Vulkan Harex Stahlfasertechnik GmbH and Co KG
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 Vulkan-Harex Stahlfasertechnik & Co KG GmbH, Vulkan Harex Stahlfasertechnik GmbH and Co KG filed Critical Vulkan-Harex Stahlfasertechnik & Co KG GmbH
Publication of EP0582905A2 publication Critical patent/EP0582905A2/fr
Publication of EP0582905A3 publication Critical patent/EP0582905A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/012—Discrete reinforcing elements, e.g. fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F45/00—Wire-working in the manufacture of other particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F45/00—Wire-working in the manufacture of other particular articles
    • B21F45/006—Wire-working in the manufacture of other particular articles of concrete reinforcement fibres

Definitions

  • the invention relates to a fiber for reinforcing concrete or the like made of wire or flat strip, in particular steel, according to the preamble of claim 1.
  • the invention further relates to a device for producing such fibers.
  • Fibers of this type for admixing in an initially soft, later hardening material such as concrete are known in various designs.
  • Such fibers often consist of an essentially elongated piece of wire with hook-like deformations at its two ends, the ends being angled, cranked or also bent into a closed circle.
  • the primary requirement of such fibers is that their shape does not have an unfavorable influence on the miscibility, but that a good binding behavior can nevertheless be achieved in the hardened material and that they can be produced inexpensively.
  • the extensive fulfillment of one of these requirements, such as the achievement of a good bond can lead to the mixing behavior and also the production costs being influenced more or less unfavorably.
  • the object of the invention is therefore to provide an improved fiber with regard to the greatest possible fulfillment of the three aforementioned basic requirements.
  • Another task of the invention is Creation of a suitable facility for producing such fibers.
  • the invention provides a fiber for reinforcing concrete or the like made of wire or flat ribbon, in particular steel, in which a shorter, corrugated intermediate section adjoins a straight central section at its ends as a transition to the respective end section.
  • each corrugated intermediate section is designed as a double shaft in accordance with an elongated S shape.
  • the shafts of the intermediate sections are arranged so that they run in the same plane, mainly for reasons of simplified production.
  • the end sections are expediently designed as straight sections and run approximately parallel to the straight central section.
  • the end sections have a wedge shape caused by compression at their free end and that the outermost end of the wedge-shaped section is wider than the fiber profile.
  • a major advantage of the new fiber is the fact that the deformed sections adjoining the straight central section have smooth and no sharp-edged transitions in the area of the deformations have, whereby the miscibility is influenced favorably. Furthermore, all deformations are designed so that fibers can be produced as a finished product in a single operation; this leads to a considerable reduction in manufacturing costs.
  • a device for producing fibers which has two counter-rotating, synchronously rotating embossing wheels, which face each other with a gap corresponding to the thickness of the fiber with their end faces and which have tooth-like projections and depressions which engage with one another on their peripheral jacket surfaces, and in which on the entire circumference with the same angular distance from each other radially standing stamping dies with a triangular profile in the plane of rotation and corresponding pressing stamps with a flat surface are attached to the other stamping wheel.
  • the arc distance between two successive pairs of punches is chosen so that it corresponds to the desired length of a finished fiber.
  • the embossing stamp and associated pressure stamp are set radially so that when they face each other they touch without pressure. Embossing and pressure stamps are expediently attached to the two embossing wheels in an exchangeable manner.
  • the starting material for the production of fibers of the type described above is wire or flat ribbon, which is the continuous material of the two embossing wheels is fed.
  • the continuous material is continuously drawn through the gap between the circumferential surfaces of the two embossing wheels by the counter-rotation of the two embossing wheels and is deformed in the desired manner due to the tooth-like projections and depressions on the embossing edges, furthermore by the action of the embossing die and associated
  • the finished fibers are separated from the supplied strand material by a pressure stamp by means of a compression and separation process.
  • the smaller thickness of the rectangular profile is expediently deformed.
  • fibers of this type generally have a total length of approximately 6 cm, although longer lengths are also possible.
  • the fiber is composed of a rectilinear central section (1) and shorter, likewise rectilinear end sections (2) which run approximately parallel to the central section (1).
  • a corrugated or cranked intermediate section (3) adjoins each end of the central section (1) as a transition to the respective end section (2).
  • the intermediate section (3) has an elongated S-shape with a wave crest and a wave trough, the leg (4) of the intermediate section (3) adjacent to the end section (2) being longer than that of the central section (1) adjoining leg (5).
  • the length of the leg (4) selected in each case determines the degree of parallel lateral displacement of the end sections (2) with respect to the center section (1). All kinks in the deformation of the fiber are softly curved to avoid sharp edges.
  • the outermost end of the two end sections (2) has an approximately dovetail-like profile (6), as can be seen in FIG. 2.
  • the dovetail-like end piece is flattened in a wedge shape towards the free end. This shape is created during the production of the fibers, which will be discussed below.
  • the length ratios of the individual sections of the fiber and also the angles of the offsets can vary. However, it is expedient to choose the length of an intermediate section (3) 30% or less of the length of the central section (1).
  • the end sections (2) are usually less long than the intermediate sections.
  • the deformations are preferably in a common plane. When using round wire as the starting material, the diameter is, for example, 0.4 to 1.0 mm.
  • a device for the production of fibers according to FIGS. 1 and 2, which u. a. contains two embossing wheels (7, 8), as are shown schematically in part in FIG. 3.
  • the two embossing wheels (7, 8) face each other like two spur gears, leaving a gap between their circumferential outer surfaces corresponding to the thickness of the strand material to be processed.
  • the peripheral jacket surfaces (9, 10) are provided with successive projections (11) and depressions (12) according to the desired deformation of the intermediate sections of the finished fiber.
  • the embossing wheels are the same over the entire circumference Division projections (11) and depressions (12) attached. Two successive pairs of projections (11) and depressions (12 or 11.1 and 12.1) each cause the desired deformation of a single fiber.
  • the undeformed sections of the circumferential surface correspond to the central section (1) or the end sections (2) of a fiber.
  • embossing stamps (14) For separating the completely formed fibers from the supplied strand material (13), embossing stamps (14) with a triangular profile in the plane of rotation at the same angular distance from one another are attached to the embossing wheel (7) and radially standing pressure stamps (15) with a flat surface on the embossing wheel (8). Embossing stamps (14) and pressure stamps (15) are set in their radial position so that when they face each other in the same radial plane they touch but do not exert any pressure on one another.
  • FIG. 3 shows a position of the embossing wheels (7, 8), in which a finished fiber (16) is just being separated from the strand material (13) supplied. Any post-processing is not necessary. By shearing the fibers according to the invention in comparison with known methods, a considerable increase in productivity can be achieved.
  • Wire preferably round wire, or flat strip can be used as the starting material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wire Processing (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Ropes Or Cables (AREA)
  • Nonwoven Fabrics (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP19930112124 1992-08-13 1993-07-29 Fibre of wire or steel hoop for the reinforcement of concrete or the like and device for the manufacturing of such fibres Withdrawn EP0582905A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4226744 1992-08-13
DE4226744A DE4226744A1 (de) 1992-08-13 1992-08-13 Faser zur Bewehrung von Beton oder dergleichen aus Draht oder Flachband und Einrichtung zum Herstellen solcher Fasern

Publications (2)

Publication Number Publication Date
EP0582905A2 true EP0582905A2 (fr) 1994-02-16
EP0582905A3 EP0582905A3 (en) 1994-06-01

Family

ID=6465430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930112124 Withdrawn EP0582905A3 (en) 1992-08-13 1993-07-29 Fibre of wire or steel hoop for the reinforcement of concrete or the like and device for the manufacturing of such fibres

Country Status (6)

Country Link
US (1) US5359873A (fr)
EP (1) EP0582905A3 (fr)
JP (1) JPH06192927A (fr)
CN (1) CN1082955A (fr)
CA (1) CA2101479A1 (fr)
DE (1) DE4226744A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997011239A1 (fr) * 1995-09-19 1997-03-27 N.V. Bekaert S.A. Element en fil d'acier, destine a etre mele a des materiaux qui font prise ulterieurement
EP1790792A2 (fr) * 2005-11-28 2007-05-30 Fili & Forme S.r.l. Artefact de construction
WO2012080326A3 (fr) * 2010-12-15 2012-11-15 Nv Bekaert Sa Fibre d'acier destinée au renforcement du béton ou du mortier, dotée d'une extrémité d'ancrage comprenant au moins deux segments incurvés
GB2491339A (en) * 2011-04-15 2012-12-05 Stephen Bell Punching shear reinforcement structure for pre cast concrete planks
US8871020B2 (en) 2009-06-12 2014-10-28 Nv Bekaert Sa High elongation fibres
US9045901B2 (en) 2009-06-12 2015-06-02 Nv Bekaert Sa High elongation fibre with good anchorage
US9435122B2 (en) 2010-12-15 2016-09-06 Nv Bekaert Sa Steel fibre for reinforcing concrete or mortar having an anchorage end with at least three straight sections

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5599599A (en) * 1995-07-06 1997-02-04 University Of Central Florida Fiber reinforced plastic ("FRP")-concrete composite structural members
US6123485A (en) * 1998-02-03 2000-09-26 University Of Central Florida Pre-stressed FRP-concrete composite structural members
NL1016105C2 (nl) 2000-09-05 2002-03-07 Harex Nederland B V Vezelmengsel voor beton.
ITUD20050030A1 (it) * 2005-02-25 2006-08-26 Aimc Srl Macchina per la produzione di fibra metallica e relativo procedimento di produzione
US20110086134A1 (en) 2008-06-20 2011-04-14 Tarun Bhowmik Enzymatic Process
CN101574170B (zh) * 2009-06-05 2012-06-06 开平鸿汉服装配件有限公司 一种文胸钢圈及其生产方法和设备
JP5360903B2 (ja) * 2009-11-25 2013-12-04 トリニティ工業株式会社 ロッカーモール用塗装治具及びパイプ成形装置
NO333023B1 (no) * 2010-03-03 2013-02-18 Reforcetech Ltd Armeringssystem og fremgangsmate for bygging av betongkonstruksjoner.
US8790777B2 (en) * 2012-04-19 2014-07-29 The Boeing Company Composite articles having fibers with longitudinally-varying geometry

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2043055A1 (de) * 1970-08-31 1972-03-02 Verfahren zur Herstellung einer Stahlfaserbetonmasse fur Betonbauten jeder
US3900667A (en) * 1969-09-12 1975-08-19 Bekaert Sa Nv Reinforcing wire element and materials reinforced therewith
GB1446855A (en) * 1972-08-16 1976-08-18 Gkn Somerset Wire Ltd Metal reinforcing elements
EP0098825A1 (fr) * 1982-07-01 1984-01-18 Eurosteel S.A. Fibres de renforcement de matériaux moulables à liant hydraulique ou non et leur fabrication
DE3435850A1 (de) * 1984-09-29 1986-04-17 Alwin Dipl.-Ing. 7560 Gaggenau Merz Faserbewehrter stahlbeton
DE9000846U1 (de) * 1990-01-26 1991-06-27 Astrid K. Schulz GmbH & Co Handelsgesellschaft KG, 7129 Ilsfeld Faser zur Bewehrung von Beton
EP0475917A1 (fr) * 1990-09-12 1992-03-18 OFFICINE MACCAFERRI S.p.A. Fibre en métal pour armer le béton
DE9210824U1 (de) * 1992-08-13 1992-10-29 Vulkan-Harex Stahlfasertechnik GmbH & Co. KG, 4690 Herne Faser zur Bewehrung von Beton o.dgl. aus Draht oder Flachband und Einrichtung zum Herstellen solcher Fasern

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US99221A (en) * 1870-01-25 Improved rolling-mill
US1365258A (en) * 1920-04-03 1921-01-11 Standard Crayon Mfg Company Corrugating-machine
FR92860E (fr) * 1960-09-15 1969-01-10 Teszner Stanislas Perfectionnements aux dispositifs semiconducteurs dits tecnetrons a résistance négative et aux procédés de leur fabrication.
US3942955A (en) * 1969-09-12 1976-03-09 N. V. Bekaert S. A. Reinforcing wire element
DE2018396A1 (en) * 1970-04-17 1971-10-28 Lävemann, Kurt, 2400 Lübeck Concrete reinforcing rod bending machine
AU3433478A (en) * 1977-03-22 1979-09-27 Rocla Concrete Pipes Limited A Reinforcement fibres
US4608845A (en) * 1984-05-29 1986-09-02 Thomas P. Mahoney Apparatus for fabricating honeycomb core strip
DE3512115A1 (de) * 1985-04-03 1986-10-16 Gerhard 6114 Groß-Umstadt Glaser Verfahren und vorrichtung zum kaltformbiegen von metallischen staeben
DE9103713U1 (de) * 1991-03-26 1991-05-29 WOTT Stahlfaser für Beton-Technik, 5970 Plettenberg Stahlfaser, insbesondere zur Bewehrung von Beton, und Vorrichtung zur Herstellung von Stahlfasern

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900667A (en) * 1969-09-12 1975-08-19 Bekaert Sa Nv Reinforcing wire element and materials reinforced therewith
DE2043055A1 (de) * 1970-08-31 1972-03-02 Verfahren zur Herstellung einer Stahlfaserbetonmasse fur Betonbauten jeder
GB1446855A (en) * 1972-08-16 1976-08-18 Gkn Somerset Wire Ltd Metal reinforcing elements
EP0098825A1 (fr) * 1982-07-01 1984-01-18 Eurosteel S.A. Fibres de renforcement de matériaux moulables à liant hydraulique ou non et leur fabrication
DE3435850A1 (de) * 1984-09-29 1986-04-17 Alwin Dipl.-Ing. 7560 Gaggenau Merz Faserbewehrter stahlbeton
DE9000846U1 (de) * 1990-01-26 1991-06-27 Astrid K. Schulz GmbH & Co Handelsgesellschaft KG, 7129 Ilsfeld Faser zur Bewehrung von Beton
EP0475917A1 (fr) * 1990-09-12 1992-03-18 OFFICINE MACCAFERRI S.p.A. Fibre en métal pour armer le béton
DE9210824U1 (de) * 1992-08-13 1992-10-29 Vulkan-Harex Stahlfasertechnik GmbH & Co. KG, 4690 Herne Faser zur Bewehrung von Beton o.dgl. aus Draht oder Flachband und Einrichtung zum Herstellen solcher Fasern

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997011239A1 (fr) * 1995-09-19 1997-03-27 N.V. Bekaert S.A. Element en fil d'acier, destine a etre mele a des materiaux qui font prise ulterieurement
BE1009638A3 (nl) * 1995-09-19 1997-06-03 Bekaert Sa Nv Staaldraadelement voor het mengen in achteraf verhardende materialen.
US6045910A (en) * 1995-09-19 2000-04-04 N. V. Bekaert S. A. Steel wire element for mixing into subsequently hardening materials
EP1790792A2 (fr) * 2005-11-28 2007-05-30 Fili & Forme S.r.l. Artefact de construction
EP1790792A3 (fr) * 2005-11-28 2007-10-24 Fili & Forme S.r.l. Artefact de construction
US9045901B2 (en) 2009-06-12 2015-06-02 Nv Bekaert Sa High elongation fibre with good anchorage
US8871020B2 (en) 2009-06-12 2014-10-28 Nv Bekaert Sa High elongation fibres
US8962150B2 (en) 2010-12-15 2015-02-24 Nv Bekaert Sa Steel fibre for reinforcing concrete or mortar having an anchorage end with at least two bent sections
WO2012080326A3 (fr) * 2010-12-15 2012-11-15 Nv Bekaert Sa Fibre d'acier destinée au renforcement du béton ou du mortier, dotée d'une extrémité d'ancrage comprenant au moins deux segments incurvés
AU2011343412B2 (en) * 2010-12-15 2016-04-14 Nv Bekaert Sa Steel fibre for reinforcing concrete or mortar having an anchorage end with at least two bent sections
US9435122B2 (en) 2010-12-15 2016-09-06 Nv Bekaert Sa Steel fibre for reinforcing concrete or mortar having an anchorage end with at least three straight sections
EA025712B1 (ru) * 2010-12-15 2017-01-30 Нв Бекаэрт Са Стальное волокно для армирования бетона или цементного раствора, имеющее анкерный конец по меньшей мере с двумя изогнутыми секциями
GB2491339A (en) * 2011-04-15 2012-12-05 Stephen Bell Punching shear reinforcement structure for pre cast concrete planks

Also Published As

Publication number Publication date
US5359873A (en) 1994-11-01
JPH06192927A (ja) 1994-07-12
DE4226744A1 (de) 1994-02-17
CN1082955A (zh) 1994-03-02
CA2101479A1 (fr) 1994-02-14
EP0582905A3 (en) 1994-06-01

Similar Documents

Publication Publication Date Title
DE69710183T2 (de) Verfahren zur herstellung von steifen, dünnen bandmaterial, sowie rollen zur verwendung bei solch einem verfahren
EP0582905A2 (fr) Fibre en fil d'acier ou en feuillard pour armature de béton ou similaire et dispositif pour la fabrication de telles fibres
DE69320366T2 (de) Blattartiges material, verfahren und rollen zur verwendung in diesem verfahren
DE2265310C3 (de) Statorkern für rotierende elektrische Maschinen
EP2210003B1 (fr) Procédé de réalisation d'une garniture filetée présentant un filetage intérieur et un filetage extérieur et garniture filetée correspondante
EP0314935B1 (fr) Laminage à chaud de barres à nervures hélicoidales
DE3611134C2 (fr)
DE3006526A1 (de) Verfahren und vorrichtung zum herstellen von elementen mit profiliertem querschnitt aus blech
EP0559951A1 (fr) Procédé et outil de coupe pour la réalisation de fibres à partir de tôles d'acier
EP0233172B1 (fr) Tôle en acier inoxydable et dispositif de laminage de tôles
DE9207598U1 (de) Armierungsfaser aus Stahldraht
DE3307767A1 (de) Verfahren und vorrichtung zur herstellung von stahlstreifen
DE9210824U1 (de) Faser zur Bewehrung von Beton o.dgl. aus Draht oder Flachband und Einrichtung zum Herstellen solcher Fasern
DE3022085A1 (de) Betonbewehrungsstab, insbesondere ankerstab, und verfahren zu seiner herstellung
WO1986003437A1 (fr) Dispositif de presse pour la fabrication d'une cremaillere de direction
DE2228496A1 (de) Verfahren und vorrichtung zum herstellen eines gewellten duennen bleches
DE2052022C3 (de) Verfahren zur Herstellung einer geschlossenen Formdrahtlage für Drahtseile, Kabel und ähnliche Erzeugnisse
DE2532404C3 (de) Verfahren zur Herstellung von für eine Sägekette vorgesehenen Schneidezähnen
DE3409151C1 (de) Verfahren und Vorrichtung zum Herstellen von selbsttragenden Bauelementen sowie Verwendung derselben zum Abdecken von ringsegmentförmigen Flächen
DE102006040519B4 (de) Verfahren zur Herstellung einer Stromschiene
DE2845903C3 (de) Biegsame Schnecke für ein Schneckengetriebe
DE6941163U (de) Tellerfeder und vorrichtung zu ihrer herstellung
DE2160470A1 (de) Mit Rippen versehener Betonbewehrungsstab
CH401121A (de) Strassenleitplanke und Verfahren zu deren Herstellung
EP1712307A2 (fr) Méthode d'obtention d'une pièce en tôle comprenant au moins un bord au moins partiellement roulé et pièce obtenue suivant cette méthode.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE ES FR IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE ES FR IT LI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19941202