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 PDFInfo
- 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- Withdrawn
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 title claims description 4
- 239000010959 steel Substances 0.000 title claims description 4
- 230000002787 reinforcement Effects 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 title description 8
- 230000007704 transition Effects 0.000 claims abstract description 5
- 238000004049 embossing Methods 0.000 claims description 25
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 230000006735 deficit Effects 0.000 abstract 1
- 238000004080 punching Methods 0.000 abstract 1
- 239000007858 starting material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000000109 continuous material Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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)
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)
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)
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)
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)
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 |
-
1992
- 1992-08-13 DE DE4226744A patent/DE4226744A1/de not_active Ceased
-
1993
- 1993-07-23 JP JP5224899A patent/JPH06192927A/ja active Pending
- 1993-07-28 CA CA002101479A patent/CA2101479A1/fr not_active Abandoned
- 1993-07-29 EP EP19930112124 patent/EP0582905A3/de not_active Withdrawn
- 1993-08-13 CN CN93109673.1A patent/CN1082955A/zh active Pending
- 1993-08-13 US US08/106,382 patent/US5359873A/en not_active Expired - Fee Related
Patent Citations (8)
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)
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 |
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