EP4171847A1 - Grillage en acier constitué de fils d'acier ayant des boucles hexagonales, dispositif de production et procédé de production - Google Patents

Grillage en acier constitué de fils d'acier ayant des boucles hexagonales, dispositif de production et procédé de production

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Publication number
EP4171847A1
EP4171847A1 EP22700921.4A EP22700921A EP4171847A1 EP 4171847 A1 EP4171847 A1 EP 4171847A1 EP 22700921 A EP22700921 A EP 22700921A EP 4171847 A1 EP4171847 A1 EP 4171847A1
Authority
EP
European Patent Office
Prior art keywords
mesh
steel wire
steel
hexagonal
steel wires
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.)
Granted
Application number
EP22700921.4A
Other languages
German (de)
English (en)
Other versions
EP4171847B1 (fr
EP4171847C0 (fr
Inventor
Mario Brunn
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.)
Geobrugg AG
Original Assignee
Geobrugg AG
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 Geobrugg AG filed Critical Geobrugg AG
Priority to RS20240279A priority Critical patent/RS65404B1/sr
Priority to HRP20240332TT priority patent/HRP20240332T1/hr
Publication of EP4171847A1 publication Critical patent/EP4171847A1/fr
Application granted granted Critical
Publication of EP4171847B1 publication Critical patent/EP4171847B1/fr
Publication of EP4171847C0 publication Critical patent/EP4171847C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B21F27/02—Making wire network, i.e. wire nets without additional connecting elements or material at crossings, e.g. connected by knitting
    • B21F27/06—Manufacturing on twister-gear machines
    • 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
    • B21F27/005—Wire network per se
    • 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
    • B21F27/02—Making wire network, i.e. wire nets without additional connecting elements or material at crossings, e.g. connected by knitting
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/10—Patterned fabrics or articles
    • D04B1/102—Patterned fabrics or articles with stitch pattern
    • D04B1/108—Gussets, e.g. pouches or heel or toe portions
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
    • E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/20—Metallic fibres
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/204—Geotextiles
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2507/00—Sport; Military
    • D10B2507/02—Nets

Definitions

  • the invention relates to a steel wire mesh according to the preamble of claim 1, a manufacturing device according to the preamble of claim 13 and a manufacturing method according to claim 17.
  • the object of the invention consists in particular in providing a generic steel wire mesh made of high-strength steel wires with an improved mesh geometry, in particular improved mesh width-mesh height ratios.
  • the object is achieved according to the invention by the features of patent claims 1, 13 and 17, while advantageous configurations and developments of the invention can be found in the dependent claims.
  • the invention is based on a steel wire mesh, in particular a hexagonal mesh, made of steel wires with hexagonal meshes, in particular for construction purposes, preferably for use in the field of protection against natural hazards, the steel wires being twisted alternately with adjacent steel wires, preferably regularly, and the steel wires are made of high-strength steel or have at least one wire core made of high-strength steel (eg high-strength steel wires provided with a coating or coated).
  • a steel wire mesh in particular a hexagonal mesh, made of steel wires with hexagonal meshes, in particular for construction purposes, preferably for use in the field of protection against natural hazards, the steel wires being twisted alternately with adjacent steel wires, preferably regularly, and the steel wires are made of high-strength steel or have at least one wire core made of high-strength steel (eg high-strength steel wires provided with a coating or coated).
  • an especially average ratio of an especially average mesh size of the hexagonal meshes and an especially average mesh height of the hexagonal meshes measured perpendicular to the mesh size is at least 0.75, preferably at least 0.8.
  • slope protection gabions, coast protection gabions, river mattresses, stone rollers, etc. which previously did not use high-strength hexagonal meshes with standard-compliant mesh sizes, can be easily and uncomplicatedly (unbureaucratically) improved and/or reinforced , for example by replacing the non-high-strength hexagonal mesh with a high-strength hexagonal mesh with the same mesh geometry directly and without major changes.
  • an identical filling material in particular with an identical grain size of the filling material, can advantageously be used for the slope protection gabions, the coastal protection gabions, the river mattresses and/or the stone rollers. As a result, costs and workload can be advantageously reduced.
  • the steel wire mesh according to the invention cannot be produced either with known conventional machines or with the production device described in patent specification PL 235814 B1. more, in Modifications and/or process steps explained in this document are therefore absolutely necessary for the production of the steel wire mesh according to the invention.
  • the hexagonal meshes have shapes of at least substantially symmetrical hexagons.
  • the hexagonal meshes each have a somewhat elongated honeycomb shape.
  • the hexagonal meshes form an uninterrupted tessellation in a mesh plane of the steel wire mesh.
  • Construction purposes should be understood in particular to mean purposes that include planning, execution and/or a change to a building. Examples of use in natural hazard protection are the aforementioned gabions, such as slope protection gabions, stone rollers, coast protection gabions, or river mattresses, but also terrain spans, safety fences or the like.
  • an average value of a parameter such as an average mesh-height ratio, an average mesh, an average mesh height, an average length of a hexagonal mesh-defining twisted portion of the steel wire mesh, an average length of a twist, an average entrance curvature of the steel wire at a transition from a hexagonal mesh delimiting and at least substantially straight section of the steel wire to a hexagonal mesh delimiting twisted area of the steel wire, a mean initial curvature of the steel wire at a transition from the hexagonal mesh delimiting twisted area of the steel wire to a hexagonal one Mesh delimiting and at least substantially straight further section of the steel wire and / or an average opening angle of the hexagonal mesh, from a mean value of several, in particular at least three, preferably at least five, preferably at least seven and particularly preferably at least ten meshes of the steel wire mesh having the parameter are formed, the meshes used to form the mean value preferably not being directly adjacent to one another.
  • a “mesh size” is to be understood in particular as a distance between two twisted areas of the steel wire mesh, which delimit a hexagonal mesh, run at least essentially parallel to one another and lie on opposite sides of the hexagonal mesh.
  • a “mesh height” is to be understood in particular as a distance between two opposite corners of a hexagonal mesh of the steel wire mesh in a direction parallel to a main extension direction of the twisted area.
  • a twisting of the two steel wires delimiting the hexagonal mesh begins and/or ends at the corners of the hexagonal mesh, between which the mesh height is measured.
  • the mesh size of the hexagonal meshes of the steel wire mesh is smaller than the mesh height of the hexagonal meshes of the steel wire mesh.
  • a “main extension direction” of an object is to be understood in particular as a direction which runs parallel to a longest edge of a smallest geometric cuboid which just about completely encloses the object
  • the high-strength steel of the steel wires has a tensile strength of at least 1560 N/mm 2 , preferably at least 1700 N/mm 2 and preferably at least 1950 N/mm 2 .
  • the high-strength steel of the steel wires for example, also has a maximum tensile strength of 2150 N/mm 2
  • brittleness of the steel wires of the steel wire mesh which increases due to an increase in tensile strength, can advantageously be kept as low as possible. It can be advantageous, as experiments have shown, especially when using steel wires with tensile strengths in a narrow, specially selected tensile strength range between 1700 N/mm 2 and 2150 N/mm 2 , preferably between 1950 N/mm 2 and 2150 N/mm 2 , a particularly good balance between particularly high stability and at the same time limited brittleness can be created.
  • This balance is particularly advantageous when using the steel wire mesh for the production of any type of gabion.
  • a particularly high filling capacity and thus a particularly large and stable construction of the gabions can be achieved, which at the same time is particularly break-resistant if an event occurs, such as a rockfall in which rocks fall on the gabions.
  • a particularly average length of a twisted region delimiting a hexagonal mesh is at least 30%, preferably at least 35% and preferably at least 40% of the particularly average mesh height.
  • a particularly high stability of the steel wire mesh can advantageously be achieved.
  • a winding curvature in the twisted area of the hexagonal mesh can be kept in a (moderate) area in which the risk of breakage of the high-strength steel wire used is relatively low.
  • a particularly average length of a twisted area delimiting a hexagonal mesh is at least 50%, preferably at least 55% and preferably at least 60% of the particularly average mesh size.
  • a particularly average length of a twist within a twisted area delimiting a hexagonal mesh is less than 1.1 cm, preferably less than 1 cm, preferably with a diameter of the steel wires between 2 mm and 4 mm.
  • a mesh height can advantageously be kept in a desired range without excessively large entry curves and/or exit curves being required in the case of a transition into/from the twisted area to/from a non-twisted area delimiting the hexagonal mesh.
  • one, in particular the average, entrance curvature of the steel wire is preferably at least essentially the same size as the, in particular average, exit curvature of the steel wire at a transition from the twisted area of the steel wire delimiting the hexagonal mesh to an at least substantially straight further section of the steel wire delimiting the hexagonal mesh.
  • substantially the same size should mean in particular a deviation in the radii of curvature of less than 20%, preferably less than 15%, advantageously less than 10%, preferably less than 5% and particularly preferably less be understood as 2.5%.
  • the steel wires preferably bend at the transition from the at least essentially straight section of the steel wire delimiting the hexagonal mesh to the twisted area of the steel wire delimiting the hexagonal mesh to the same extent as in the transition from the hexagonal mesh delimiting twisted area of the steel wire to the hexagonal mesh delimiting and at least substantially straight further section of the steel wire.
  • kinks that can be seen at the transitions have buckling angles that change by less than 20%, preferably by less than 15%, advantageously by less than 10%, preferably less than 5% and more preferably less than 2.5%.
  • a twisted area delimiting a hexagonal mesh comprises more than three consecutive, in particular rectified, twists.
  • the twisted area delimiting the hexagonal meshes preferably has at least five or at least seven consecutive twists, preferably in the same direction.
  • a twist should be understood to mean that the adjacent steel wire wraps around one of the steel wires by 180°.
  • a tight helical winding of two wires around each other with a winding of both wires through 180° should be understood as a twist. With three successive twists, each steel wire is wrapped around the other steel wire by 540° (5 times: 900°, 7 times: 1260°).
  • At least one opening angle of the hexagonal mesh that spans the hexagonal mesh in the longitudinal direction is at least 70°, preferably at least 80° and preferably at least 90°, a high degree of stability can advantageously be achieved while maintaining the advantageous mesh width/mesh height ratio of 0, 75 can be reached.
  • the advantageous mesh width-mesh height ratio of 0.75 or more while at the same time being sufficiently long and thus avoiding wire breakage twisted areas can be achieved.
  • the opening angle spanning the hexagonal mesh in the longitudinal direction is, in particular, the angle which is spanned by the (untwisted) steel wires at the corner where the two steel wires that jointly (all around) delimit the hexagonal mesh meet or separate.
  • the hexagonal mesh comprises two opening angles that span the hexagonal mesh in the longitudinal direction.
  • both opening angles spanning the hexagonal mesh in the longitudinal direction are at least 70°, preferably at least 80° and preferably at least 90°.
  • both opening angles spanning the hexagonal mesh in the longitudinal direction are at least essentially the same size.
  • substantially the same size is to be understood in particular as meaning that the opening angles correspond in size with a maximum relative deviation of 8°, preferably 6°, advantageously 4° and preferably 2°.
  • the longitudinal direction of the hexagonal mesh runs in particular parallel to the main direction of extension of the hexagonal mesh.
  • opening angles of the hexagonal mesh that span a hexagonal mesh in the longitudinal direction differ from one another by no more than 8°, preferably by no more than 6°, preferably by no more than 4°, a high degree of symmetry of the steel wire mesh, in particular the hexagonal meshes, can be achieved, as a result of which a particularly uniform load capacity can advantageously be achieved in at least two opposite directions of tension of the steel wire mesh along the mesh height, preferably in all directions of the steel wire mesh.
  • the hexagonal meshes have an, in particular medium, mesh size of about 60 mm, about 80 mm or about 100 mm, a high and rapid acceptance of the steel wire mesh in planning and construction projects can advantageously be achieved.
  • a simple reinforcement of already planned or designed buildings in particular by a particularly simple replanning.
  • the hexagonal meshes have a mesh size and/or mesh shape corresponding to the EN 10223-3:2013 standard.
  • the steel wire has a diameter of 2 mm, 3 mm, 4 mm or a value between 2 mm and 4 mm.
  • the high-strength steel of the steel wires is made of a stainless steel type or at least includes a sheath made of a stainless steel type, a particularly high corrosion resistance and associated a particularly long service life of the structures comprising the steel wire mesh can be obtained. Service lives of 100 years and more are increasingly being requested by customers and can theoretically be achieved by using stainless steel grades.
  • the steel wire is made of a stainless steel with a material number according to the DIN EN 10027-2:2015-07 standard, which is between 1.4001 and 1.4462, for example made of a stainless steel with one of the DIN EN 10027-2:2015-07 -Material numbers 1.4301, 1.4571, 1.4401, 1.4404 or 1.4462.
  • the steel wires have an anti-corrosion coating or an anti-corrosion coating, high corrosion resistance and, associated therewith, a long service life can advantageously also be achieved, with costs being able to be kept low in comparison to stainless steel wires.
  • the anti-corrosion coating is designed as a zinc coating, as a ZnAl coating, as a ZnAlMg coating or as a comparable metallic anti-corrosion coating.
  • the anti-corrosion coating is formed as a non-metallic coating surrounding the steel wire in the circumferential direction, e.g. as a plastic sheath (e.g. PVC) or as a graphene sheath.
  • the anti-corrosion coating be at least as a class B anti-corrosion coating according to the standard DIN EN 10244-2:2001-07, preferably as a class A anti-corrosion coating the standard DIN EN 10244-2:2001-07.
  • a particularly high level of corrosion resistance and, associated therewith, a long service life can advantageously be achieved.
  • the starting materials ie the unbent steel wires, have the class B or class A anti-corrosion coating, but also the finished steel wire mesh.
  • At least one section of the steel wire mesh with the anti-corrosion layer has a corrosion resistance of more than 1680 hours, preferably more than 2016 hours, advantageously more than 2520 hours, preferably more than 3024 hours and particularly preferably more in a test using a climate change test than 3528 hours.
  • a "climate change test” is to be understood in particular as a corrosion resistance test of the corrosion protection, in particular the corrosion protection layer, preferably in accordance with the specifications of the VDA (German Association of the Automotive Industry) recommendation VDA 233-102, which in particular includes fogging and/or spraying at least for a partial period of a test piece with a salt spray mist and/or exposes the test piece to a temperature change from room temperature to sub-zero temperatures for at least a partial period of time.
  • the reliability of a test method can advantageously be improved by varying a temperature, a relative humidity and/or a salt concentration to which the test piece is exposed.
  • test conditions can advantageously be adapted closer to real conditions to which the wire mesh device is exposed, in particular during field use.
  • the test piece is preferably designed as a part of a wire that is at least essentially identical to the wire of the wire mesh device, preferably as a part of the wire of the wire mesh device.
  • the climate change test is preferably carried out in accordance with the usual boundary conditions for climate change tests known to a person skilled in the art, as listed in particular in the VDA recommendation VDA 233-102 of June 30, 2013.
  • the climate change test is carried out in particular in a test chamber.
  • the conditions in an interior of the Test chambers for the climate change test are particularly strictly controlled. In particular, strict specifications for temperature profiles, relative humidity and fogging periods with salt spray must be observed during the climate change test.
  • a test cycle of the climate change test is divided in particular into seven cycle parts.
  • a test cycle of the climate change test lasts one week in particular.
  • a test cycle includes three different sub-test cycles.
  • a sub-test cycle forms a cycle part.
  • the three sub-test cycles include at least one cycle A, at least one cycle B and/or at least one cycle C.
  • sub-test cycles run one after the other in the following order: cycle B, cycle A, cycle C, cycle A, cycle B, cycle B, cycle A
  • Cycle A includes a salt spray phase.
  • a salt spray mist is sprayed, particularly inside the test chamber.
  • the salt solution sprayed during cycle A consists in particular of a solution of sodium chloride in distilled water, preferably boiled before preparing the solution, which preferably has an electrical conductivity of at most 20 pS/cm at (25 ⁇ 2) °C, with a mass concentration in a range of (10 ⁇ 1) g/L.
  • the test chamber for the climate change test has in particular an internal volume of at least 0.4 m3. In particular when the test chamber is in operation, the interior volume is homogeneously filled with salt spray mist.
  • the upper parts of the test chamber are preferably designed in such a way that no drops formed on the surface can fall onto a test piece.
  • a temperature during the spraying of the salt spray mist, in particular inside the test chamber, is advantageously (35 ⁇ 0.5) °C, the temperature preferably being measured at least 100 mm away from a wall of the test chamber.
  • cycle B includes a work phase during which the temperature is maintained at room temperature (25 °C) and the relative humidity at a relative humidity typical of the room (70%).
  • the working phase can in particular the test chamber is opened and the test piece is examined and/or checked.
  • cycle C includes a freezing phase.
  • the test chamber temperature in particular is kept at a value below 0°C, preferably -15°C.
  • Corrosion resistance is intended to mean, in particular, the durability of a material during a corrosion test, for example a climate change test, in particular in accordance with the VDA recommendation VDA 233-102 of June 30, 2013, during which a test piece remains functional and/or preferably a temporal one Duration during which a threshold value of a corrosion parameter in a test piece during one of the climate change tests is undercut.
  • “Functionality remains” is to be understood in particular as meaning that material properties of a test piece that are important for the functionality of a wire mesh, such as tear strength and/or brittleness, remain essentially unchanged.
  • a material property remains essentially unchanged is to be understood in particular as meaning that a change in a material parameter and/or a material property is less than 10%, preferably less than 5%, preferably less than 3% and particularly preferably less than 1% im compared to an initial value before the corrosion test.
  • the corrosion parameter is preferably in the form of a percentage of a total surface area of a test piece on which dark brown rust (DBR) can be seen, in particular visually.
  • DBR dark brown rust
  • the threshold value of the corrosion parameter is preferably 5%.
  • corrosion resistance preferably indicates a period of time which elapses up to 5% of an entire surface of a test piece, particularly one exposed to the salt spray mist in the climate change test, showing rust-brown rust (“dark brown rust”, DBR) that is visually recognizable.
  • the corrosion resistance is preferably the time between a start of the climatic cycling test and the appearance of 5% DBR on the surface of the test piece.
  • the manufacturing process of the anti-corrosion coated steel wire meshes used is specially adapted so that the resulting steel wires have a high breaking strength despite the high tensile strength and despite the thick anti-corrosion layers and, in particular, survive the manufacturing process for the steel wire mesh in such a way that the resulting steel wire mesh is break-free and the anti-corrosion layer is undamaged remains.
  • the coating temperature is specifically selected in such a way that additional embrittlement of the coated high-strength steel wires can be kept low.
  • the temperature of the coating bath is deliberately kept lower than usual.
  • the coating temperature of the coating bath remains below 440° C., preferably below 435° C., advantageously below 430° C., preferably below 425° C., in each working step.
  • the coating temperature of the coating bath remains above 421 °C. This requires in particular a complex temperature control of the coating bath.
  • a production method for the steel wire mesh made from the coated steel wires is preferably specifically adapted in such a way that the steel wire is prevented from breaking or the anti-corrosion layer is damaged when the hexagonal meshes are braided.
  • a twisting speed at which adjacent steel wires are twisted is reduced in comparison to conventional production processes.
  • the twist rate is at least 0.5 seconds per (180°) twist, preferably at least 0.75 seconds per (180°) twist, and preferably at least one second per (180°) twist.
  • the mass per unit area of the anti-corrosion coating is at least 115 g/m 2 .
  • the mass per unit area of the anti-corrosion coating is at least 135 g/m 2 .
  • the mass per unit area of the anti-corrosion coating is at least 135 g/m 2 .
  • the mass per unit area of the anti-corrosion coating is at least 150 g/m 2 .
  • the mass per unit area of the anti-corrosion coating is at least 205 g/m 2 .
  • the mass per unit area of the anti-corrosion coating is at least 255 g/m 2 .
  • the mass per unit area of the anti-corrosion coating is at least 275 g/m 2 .
  • the mass per unit area of the anti-corrosion coating is at least 280 g/m 2 .
  • the steel wire used and the anti-corrosion layer applied to the steel wire survives, in particular in at least one test, without damage, in particular without breaking, the wire being twisted N times, with N being determinable as BR °' 5 d 0 ' 5 , if necessary by means of rounding off and where d is a diameter of the wire in mm, R is a tensile strength of the wire in N mm -2 and B is a factor of at least 960 N 05 mm -05 , preferably at least 1050 N 05 mm -05 , advantageously at least 1200 N 0 ' 5 mm -0 ' 5 , preferably at least 1500 N 05 mm -0 5 and particularly preferred is at least 2000 N 0 5 mm -05 .
  • twisting test is carried out in accordance with the specifications of the standards DIN EN 10218-1:2012-03 and DIN°EN°10264-2:2012-03.
  • a significantly stricter and/or load-specific selection method for a suitable wire can be provided in comparison to a twisting test according to the standards DIN EN 10218-1:2012-03 and DIN°EN°10264-2:2012-03.
  • “Twisting” should be understood to mean, in particular, a twisting of a clamped wire about a longitudinal axis.
  • the steel wire used and the anti-corrosion layer applied to the steel wire survives, in particular in at least one test, without damage, in particular without breaking, bending the wire back and forth M times around at least one bending cylinder with a diameter of at most 8d, preferably at most 6d at most 4d and particularly preferably at most 2d, in each case protruding by at least 90° in opposite directions, with M being determinable as CR' 0 ' 5 d' 0 ' 5 , optionally by means of rounding, and with d being a diameter of the wire in mm, R being a Tensile strength of the wire in N mm -2 and C a factor of at least 350 N 05 mm -0 5 , preferably at least 600 N 05 mm -0 5 , advantageously at least 850 N 05 mm -0 5 , preferably at least 1000 N 0 5 mm - 05 and more preferably at least 1300 N 05 mm -05 .
  • the back and forth bending test is carried out in accordance with the specifications of the standards DIN EN 10218-1:2012-03 and DIN°EN°10264-2:2012-03.
  • a significantly stricter and/or load-specific selection method for a suitable wire can be provided compared to a bending test according to the standards DIN EN 10218-1:2012-03 and DIN°EN°10264-2:2012-03.
  • the wire is preferably bent around two opposite, identically designed bending cylinders during the bending back and forth.
  • At least two sections of the steel wires in particular in a test run, without breakage, have at least N+1 twists, preferably N+2 twists and preferably N+4 twists, extensive helical entanglement around each other, N being a number of twists, optionally by means of rounding, of the steel wires delimiting the hexagonal meshes to opposite sides.
  • N being a number of twists, optionally by means of rounding, of the steel wires delimiting the hexagonal meshes to opposite sides.
  • this can advantageously ensure that overbending of the steel wires used, which is necessary for the production of the steel wire mesh with the advantageous mesh size/mesh height ratio of at least 0.75, is possible and thus production of the steel wire mesh with the advantageous mesh size/mesh height ratio of at least 0 .75 is even possible.
  • a manufacturing device for braiding a steel wire mesh with hexagonal meshes, in particular a hexagonal mesh, from steel wires comprising high-strength steel is proposed, with at least one arrangement of twisting units for alternating twisting of steel wires with further steel wires guided on opposite sides of the steel wires and with at least one rotatable roller downstream of the twisting units, which has entrainment lugs on a lateral surface, which are intended to engage in the newly braided hexagonal meshes and thereby advance or advance the steel wire mesh, with the twisting units being intended to overtwist the steel wires and/or with the rotatable roller is provided to overstretch a mesh size of the hexagonal meshes, in particular in comparison to the mesh size of a finished hexagonal mesh.
  • each twisting unit comprises two half-shell twisting elements, each of which guides a steel wire and which are rotated alternately around a common axis of rotation and around two separate axes of rotation for twisting, with each of the half-shells being combined with a half-shell of an adjacent twisting unit in particular when rotating separately.
  • an axis of rotation of the rotatable roller is aligned at least substantially perpendicular to the axes of rotation of the twisting units.
  • twisting units are intended to "overtwist" the steel wires should be understood in particular to mean that a rotation angle swept by the twisting units onto the steel wires during a twisting process is greater than a total twisting angle of the twisted areas delimiting the hexagonal meshes of the finished steel wire mesh .
  • the fact that the rotatable roller is intended to "overstretch” the mesh size of the hexagonal mesh is to be understood in particular to mean that a mesh size imposed on the steel wire mesh by the rotatable roller, in particular by the entrainment lugs of the rotatable roller, is larger than a mesh size of the hexagonal mesh Meshes of the finished steel wire mesh.
  • Provided is to be understood in particular as being specially designed and/or equipped.
  • the fact that an object is provided for a specific function is to be understood in particular to mean that the object fulfills and/or executes this specific function in at least one application and/or operating state.
  • overtightening of the steel wires twisted together and/or the overstretching of the hexagonal meshes is provided for this purpose, springing back of the steel wires, which is significantly more elastic than non-high-strength steel
  • an extent of overtwisting/twisting is selected in such a way that a springback effect corresponding to the material, the tensile strength and the wire thickness of the steel wire used in each case is compensated for as completely as possible.
  • U is an odd integer >3 , which preferably corresponds to a number of twists within a twisted region delimiting a hexagonal mesh of the finished steel wire mesh
  • G is any real number > 1 and ⁇ 3.
  • G is preferably greater than or equal to 1.5, preferably greater than or equal to 2.
  • the production device should have an in has a stretching unit integrated with the rotatable roller, downstream of the rotatable roller or arranged separately, which is intended to stretch a finished steel wire mesh, in particular a hexagonal mesh, at least in one direction parallel to the mesh width, preferably by at least 30%, preferably by at least 50% to stretch and more preferably to stretch at least 55%.
  • a stretching unit integrated with the rotatable roller, downstream of the rotatable roller or arranged separately, which is intended to stretch a finished steel wire mesh, in particular a hexagonal mesh, at least in one direction parallel to the mesh width, preferably by at least 30%, preferably by at least 50% to stretch and more preferably to stretch at least 55%.
  • the stretching unit is provided to stretch a plurality of meshes of the steel wire mesh in the direction parallel to the mesh size one behind the other or spaced one behind the other are to be grabbed and stretched at the same time.
  • at least a large portion of each hexagonal mesh of the mesh is directly stretched.
  • the phrase "directly stretched” should be understood in particular to mean that the stretching unit contacts the stitch directly and stretches it independently of stretching other stitches.
  • a “large part” should be understood to mean in particular 10%, preferably 20%, advantageously 30%, particularly advantageously 50%, preferably 66% and particularly preferably 85%.
  • a manufacturing method for braiding a steel wire mesh with hexagonal meshes, in particular a hexagonal mesh is proposed, in particular by means of a manufacturing device.
  • a steel wire mesh made of high-strength steel wires with a particularly advantageous mesh geometry that is already widespread and proven, particularly in the non-high-strength area, can advantageously be provided
  • the steel wire mesh according to the invention, the production device according to the invention and the production method according to the invention should not be limited to the application and embodiment described above.
  • the steel wire mesh according to the invention, the production device according to the invention and the production method according to the invention can fulfill a requirement described herein Functionality have a number of individual elements, components and units that differs from a number mentioned herein.
  • FIG. 2 shows a schematic top view of a steel wire mesh according to the invention with hexagonal meshes
  • FIG. 3 shows a schematic section through a steel wire of the steel wire mesh with an anti-corrosion coating
  • FIG. 5 shows a schematic representation of a test device for carrying out twisting test experiments
  • FIG. 6 shows a schematic side view of a manufacturing device for braiding the steel wire mesh with the hexagonal meshes
  • FIG. 8 shows a schematic, partially sectioned detailed view of a part of the production device with a rotatable roller and with twisting units
  • 9 shows a schematic, partially sectioned detailed view of a part of the production device with an alternative rotatable roller
  • FIG. 10 shows a schematic flow chart of a manufacturing method for braiding the steel wire mesh with the hexagonal meshes
  • FIG. 12 shows a schematic section through a steel wire of a further alternative steel wire mesh according to the invention
  • FIG. 13 shows a schematic section through a steel wire of an additional further alternative steel wire mesh according to the invention.
  • FIG 1 shows a detail of a prior art steel wire mesh 254 with hexagonal meshes 216 as currently manufactured and sold by the applicant's company of patent specification PL 235814 B1 (Nector Sp. z o.o., Kraków, Tru).
  • the steel wire mesh 254 is made of steel wires 210, 212, 214 made of high-strength steel.
  • the steel wire mesh 254 has a mesh size 218 and a mesh height 220 .
  • a mesh size-to-mesh height ratio of the prior art steel wire mesh 254 is significantly less than 0.75.
  • the mesh size to mesh height ratio of the prior art steel wire mesh 254 is about 0.5.
  • the steel wire mesh 54a is intended for use in construction purposes.
  • the steel wire mesh 54a is intended for use in the field of natural hazard protection.
  • the steel wire mesh 54a is formed as a hexagonal mesh.
  • the steel wire mesh 54a has hexagonal stitches 16a.
  • the steel wire mesh 54a is formed from steel wires 10a, 12a, 14a.
  • the steel wires 10a, 12a, 14a are made of high-strength steel.
  • the high-strength steel from which the steel wires 10a, 12a, 14a are formed has a tensile strength of at least 1700 N/mm 2 and at most 2150 N/mm 2 .
  • the steel wires 10a, 12a, 14a are made of high-strength steel with a tensile strength of approximately 1950 N/mm 2 . It is also conceivable that the steel wires 10a, 12a, 14a made of high-strength steel have a (not high-strength) anti-corrosion coating 50'a (see FIG. 4) or a (not high-strength) anti-corrosion coating 48a (see FIG. 3). If the steel wires 10a, 12a, 14a have the anti-corrosion coating 48a, the anti-corrosion coating 48a is designed at least as a class B anti-corrosion coating according to the standard DIN EN 10244-2:2001-07. In the case shown as an example in FIG. 3, the anti-corrosion coating 48a is designed as a class A anti-corrosion coating according to the standard DIN EN 10244-2:2001-07.
  • the steel wires 10a, 12a, 14a of the steel wire mesh 54a are twisted alternately with adjacent steel wires 10a, 12a, 14a of the steel wire mesh 54a to form the hexagonal meshes 16a.
  • the twisted areas 24a each comprise at least three consecutive twists 28a, 38a, 40a.
  • Each twist 28a, 38a, 40a comprises a 180° turn of a steel wire 10a, 12a, 14a of the steel wire mesh 54a around a further steel wire 10a, 12a, 14a of the steel wire mesh 54a. In the one shown in Fig.
  • the twisted areas 24a have exactly three twists 28a, 38a, 40a.
  • Each of the twists 28a, 38a, 40a has a length 26a.
  • the lengths 26a of the twists 28a, 38a, 40a are approximately the same.
  • the shapes of the twists 28a, 38a, 40a are approximately the same.
  • the medium length 26a of the twists 28a, 38a, 40a within the twisted areas 24a of several of the hexagonal meshes 16a is less than 1.1 cm.
  • the hexagonal meshes 16a of the steel wire mesh 54a have a mesh height 20a.
  • the mesh height 20a is measured perpendicular to the mesh width 18a.
  • the mesh height 20a is formed as a largest opening length of the hexagonal meshes 16a.
  • the mesh height 20a is between a corner 66a of the hexagonal mesh 16a at which a twist 28a, 38a, 40a (different from the twisted areas 24a) of the two steel wires 10a, 12a delimiting the hexagonal mesh 16a all around begins and a further corner 68a of the hexagonal mesh measured.
  • the twisted areas 24a each delimit the hexagonal meshes 16a on two opposite sides. Each twisted area 24a (possible exception: edge of the steel wire mesh 54a) delimits two adjacent hexagonal meshes 16a at the same time. Each of the twisted sections 24a has a length 22a. The lengths 22a of the twisted areas 22a are approximately the same size. The mean length 22a of the twisted areas 24a delimiting the hexagonal meshes 16a is at least 30% of the mean mesh height 20a of several hexagonal meshes 16 of the steel wire mesh 54a.
  • the hexagonal meshes 16a of the steel wire mesh 54a have a mesh size 18a.
  • the mesh width 18a is formed as a shortest distance between the two twisted regions 24a delimiting a hexagonal mesh 16a.
  • the mean length 22a of the twisted areas 24a delimiting the hexagonal meshes 16a is at least 50% of the mean mesh width 18a of several hexagonal meshes 16a of the steel wire mesh 54a.
  • the mean mesh size 18a of the hexagonal meshes 16a is typically about 60 mm, about 80 mm or about 100 mm. In the case shown as an example in FIG. 2, the mesh size 18a is approximately 80 mm.
  • An average ratio of the average mesh size 18a of several hexagonal meshes 16a of the steel wire mesh 54a and the average mesh height 20a of the hexagonal meshes 16a is at least 0.75.
  • a mesh width-to-mesh height ratio formed from the mesh size 18a and the mesh height 20a is at least 0.75. In the case shown by way of example in FIG. 2, the m mesh size/mesh height ratio is 0.8.
  • the hexagonal meshes 16a have a first opening angle 44a that spans the hexagonal meshes 16a in the longitudinal direction 42a of the hexagonal meshes 16a.
  • the longitudinal direction 42a points in a manufacturing direction of the steel wire mesh 54a, i.e. from a twisted portion 24a manufactured later to a twisted portion 24a manufactured earlier. Alternatively, the longitudinal direction 42a can also point in the opposite direction.
  • the first opening angle 44a spans the hexagonal mesh 16a at a corner 66a lying further forward in the longitudinal direction 42a.
  • the hexagonal meshes 16a have a second opening angle 70a that spans the hexagonal meshes 16a in the longitudinal direction 42a of the hexagonal meshes 16a.
  • the second opening angle 70a spans the hexagonal mesh 16a at a corner 68a lying further to the rear in the longitudinal direction 42a.
  • the two opening angles 44a, 70a are located at the opposite corners 66a, 68a of the hexagonal meshes 16a.
  • the middle first opening angle 44a of several hexagonal meshes 16a of the steel wire mesh 54a is at least 70°. In the example shown in FIG. 2, the first opening angle 44a is approximately 90°.
  • the mean second opening angle 70a of several hexagonal meshes 16a of the steel wire mesh 54a is at least 70°. In the example shown in FIG. 2, the second opening angle 70a is approximately 90°.
  • the opposite central opening angles spanning the hexagonal meshes 16a in the longitudinal direction 42a 44a, 70a of the hexagonal meshes 16a differ from each other by at most 8°. In the example shown in FIG. 2, the opposite opening angles 44a, 70a of the hexagonal mesh 16a are approximately the same.
  • the two steel wires 10a, 12a which delimit a hexagonal mesh 16a of the steel wire mesh 54a all around, each point along the longitudinal direction 42a and on opposite sides of the hexagonal mesh 16a at a transition 72a, at which the respective steel wire 10a, 12a changes from one to the hexagonal Mesh 16a delimiting and at least substantially straight section 32a of the respective steel wire 10a, 12a to a hexagonal mesh 16a delimiting twisted region 24a of the steel wire 10a, 12a, an entrance curvature 30a.
  • the mean entrance curvature 30a and the mean exit curvature 34a of the steel wires 10a, 12a, 14a of several hexagonal meshes 16a are approximately the same size.
  • the steel wires 10a, 12a, 14a of the steel wire mesh 54a have a breaking strength suitable for manufacturing the hexagonal meshes 16a with the mesh size-mesh height ratio of 0.75 or more.
  • the steel wires 10a, 12a of the steel wire mesh 54a are designed in such a way that two sections of the steel wires 10a, 12a, 14a survive a helical entanglement comprising at least N+1 twists in a first twisting test attempt, N being, if necessary by rounding off, a number of twists of the steel wires 10a, 12a, 14a delimiting the hexagonal meshes 16a on opposite sides.
  • the steel wires 10a, 12a, 14a survive at least four twists.
  • the first twisting test run is performed for each steel wire batch before it is used to manufacture a steel wire mesh 54a.
  • two sections of the steel wires 10a, 12a, 14a of the steel wire batch are clamped at opposite ends in a test device 76a (see FIG. 5) and twisted together until a wire break of at least one of the steel wires 10a, 12a, 14a is detected.
  • the steel wires 10a, 12a of the steel wire mesh 54a are formed in such a way that two sections of the steel wires 10a, 12a, 14a in a second twisting test attempt at least three, preferably at least five and preferably at least seven back and forth twists comprising alternating helical entanglement and development of the steel wires 10a, 12a, 14a overlap each other.
  • the test pieces of the steel wires 10a, 12a, 14a are thereby alternately intertwined and unentangled by 180° in each case.
  • a 180° twist in one of the two directions counts as a back and forth twist.
  • the two sections of the steel wires 10a, 12a, 14a of the steel wire batch are also clamped at opposite ends in the test device 76a and twisted back and forth until a wire breakage of at least one of the steel wires 10a, 12a, 14a is detected.
  • this can advantageously ensure that the steel wires 10a, 12a, 14a do not break during the production of the steel wire mesh 54a according to the invention, in particular when the steel wires 10a, 12a, 14a are twisted and/or when the steel wire mesh 54a is overstretched.
  • the steel wire mesh 54a according to the invention can develop a sufficient protective effect, which, for example, the steel wire mesh 54 is also plastic and/or elastic deforming event (e.g. a rockfall) has a sufficiently high fracture resistance.
  • the steel wire mesh 54 is also plastic and/or elastic deforming event (e.g. a rockfall) has a sufficiently high fracture resistance.
  • FIG. 5 shows a schematic representation of the test device 76a for carrying out the first twisting test attempt and/or for carrying out the second twisting test attempt.
  • the test device 76a comprises two steel wire holding devices 78a, 80a for holding a pair of steel wires 10a, 12a in a positionally fixed and rotationally fixed manner.
  • the steel wires 10a, 12a held in the steel wire holding devices 78a, 80a are guided side by side and parallel to one another before the respective twisting test attempt is started.
  • one of the two steel wire holding devices 78a, 80a is held in a rotationally fixed manner, while the other of the two steel wire holding devices 78a, 80a is rotated about an axis of rotation which is parallel to the initial longitudinal directions 82a of the steel wires 10a, 12a held by the steel wire holding devices 78a, 80a runs.
  • FIG. 6 shows a schematic side view of a manufacturing device 52a for braiding the steel wire mesh 54a with the hexagonal meshes 16a, in particular for braiding a hexagonal mesh, from the steel wires 10a, 12a, 14a comprising the high-strength steel.
  • the manufacturing device 52a has a first wire supply device 84a for supplying at least part of the starting material, for example at least the steel wire 10a.
  • the first wire supply device 84a is intended to accommodate at least one bobbin 86a with the wound high-strength steel wire 10a in a rotatable, in particular unrollable, manner.
  • the production device 52a has a wire straightening device 88a.
  • the wire straightening device 88a is provided to at least partially straighten the previously rolled steel wire 10a.
  • the manufacturing device 52a has a second wire supply device 90a. In the second wire supply device 90a, the steel wire 12a is spirally wound.
  • the production device 52a has an arrangement of twisting units 56a, 58a (cf. also FIG. 8).
  • the twisting units 56a, 58a are provided for twisting the steel wires 10a, 12a supplied by the wire supply devices 84a, 90a with one another.
  • the twisting units 56a, 58a are provided for twisting a steel wire 10a alternately with further steel wires 12a, 14a guided on opposite sides of the steel wire 10a.
  • the manufacturing device 52a has a rotatable roller 60a.
  • the rotatable roller 60a is arranged downstream of the twisting units 56a, 58a within the production device 52a.
  • the rotatable roller 60a is provided for advancing or advancing the steel wires 10a, 12a, 14a that have already been twisted together, preferably pulling them away from the twisting regions of the twisting units 56a, 58a.
  • the rotatable roller 60a is provided for continuous rotation.
  • the production device 52a has a mesh winding device 92a.
  • the mesh roll-up device 92a is intended to take over the finished steel wire mesh 54a from the rotatable roller 60a and to roll it up into mesh rolls 94a.
  • FIG. 7 shows a further schematic illustration of the production device 52a from a perspective view.
  • FIG. 8 schematically shows a partially sectioned detailed view of a part of the production device 52a.
  • the section shown in FIG. 8 shows three twisting units 56a, 58a, 104a.
  • a first twisting unit 56a includes two twisting elements 96a, 98a.
  • a second twisting unit 58a arranged adjacent to the first twisting unit 56a also comprises two twisting elements 100a, 102a.
  • the twisting elements 96a, 98a, 100a, 102a of one of the twisting units 56a, 58a, 104a are each designed as half-shell partial elements of a cylindrical shape.
  • Each twisting element 96a, 98a, 100a, 102a of one of the twisting units 56a, 58a, 104a guides a single steel wire 10a, 12a, 14a.
  • the twisting elements 96a, 100a at the front in FIG. 8 each guide a steel wire 10a, 14a unwound from the bobbin 86a and straightened.
  • the twisting elements 98a, 102a at the back in FIG. 8 guide a steel wire 12a that is freely wound in a spiral shape.
  • the twisting elements 98a, 102a lying at the rear in FIG. 8 are arranged on a rail 106a which is mounted so as to be longitudinally movable.
  • the twisting elements 98a, 102a are carried along with the movement of the rail 106a.
  • the rail 106a is reciprocable in both directions along a longitudinal axis of the rail 106a.
  • the rail 106a is reciprocable in both directions parallel to an axis of rotation 108a of the rotatable drum 60a.
  • the rail 106a can be moved back and forth in both directions perpendicular to the axes of rotation 110a of the twisting units 56a, 58a, 104a.
  • different twisting elements 96a, 98a, 100a, 102a are alternately brought together.
  • the two twisting elements 96a, 98a belonging to the first twisting unit 56a are brought together and the corresponding steel wires 10a, 12a are twisted.
  • movement of the rail 106a brings one of the twisting elements 96a of the first twisting unit 56a together with one of the twisting elements 102a of the second twisting unit 58a.
  • the twisting elements 96a, 98a, 100a, 102a brought together in each case rotate after being brought together about a common axis of rotation 110a, whereby the steel wires 10a, 12a, 14a guided by the twisting elements 96a, 98a, 100a, 102a brought together are twisted together.
  • the rotatable roller 60a rotates, thereby drawing out the steel wires 10a, 12a, 14a from the twisting units 56a, 58a, 104a.
  • the twisting units 56a, 58a, 104a are provided to twist the steel wires 10a, 12a, 14a during the twisting process in which the steel wires 10a, 12a, 14a are twisted together to form the twisted regions 24a.
  • the twisting of the steel wires 10a, 12a, 14a twisted together is intended to compensate for springing back of the high-strength steel wires 10a, 12a, 14a, which are much more elastic than non-high-strength steel, after the twisting process.
  • the over-revving of each other twisted steel wires 10a, 12a, 14a is intended to produce a flat steel wire mesh 54a with hexagonal meshes 16a, which has tightly intertwined twisted regions 24a.
  • the twisting units 56a, 58a, 104a are provided to twist the steel wires 10a, 12a, 14a more than 3.5 times during the twisting process.
  • the twisting units 56a, 58a, 104a are provided to twist the steel wires 10a, 12a, 14a approximately 4 times during the twisting process.
  • the rotatable roller 60a has entraining lugs 64a on a lateral surface 62a.
  • the entraining lugs 64a are intended to engage in the newly braided hexagonal meshes 16a of the steel wire mesh 54a and thereby advance or advance the steel wire mesh 54a during the ongoing twisting process.
  • the rotatable roller 60a is provided to overstretch the hexagonal meshes 16a in the direction of the mesh width 18a compared to the mesh width 18a of a finished hexagonal mesh 16a.
  • the entraining lugs 64a are intended to overstretch the hexagonal meshes 16a in the direction of the mesh width 18a.
  • the entraining lugs 64a have a shape which produces an overstretching of the hexagonal meshes 16a in the direction of the mesh width 18a.
  • a width of each entraining lug 64a of the rotatable roller 60a is larger than the mesh width 18a of the finished steel wire mesh 54a.
  • the overstretching of the hexagonal meshes 16a is intended to compensate for springing back of the high-strength steel wires 10a, 12a, 14a, which are much more elastic than non-high-strength steel.
  • FIG. 9 shows schematically that part of the production device 52a that is also shown in FIG. 8, with the production device 52a having an alternative rotatable roller 60'a.
  • the manufacturing device 52a has a stretching unit 134a.
  • the stretching unit 134a is provided to stretch a finished steel wire mesh 54a in directions parallel to the mesh size 18a.
  • the stretching unit 134a is designed to stretch the finished steel wire mesh 54a by at least 30%.
  • the stretching unit 134a is integrated into the alternative rotatable roller 60'a.
  • the stretching unit 134a has stretching elements 112a, 114a, 116a.
  • the stretching elements 112a, 114a, 116a are designed as projections in the rotatable roller 60'a.
  • the stretching elements 112a, 114a, 116a are intended to engage in the hexagonal meshes 16a.
  • the stretching elements 112a, 114a, 116a are intended to engage the twisted portions 24a of the hexagonal meshes 16a and to pull the hexagonal meshes 16a apart in directions parallel to the mesh width 18a.
  • the individual hexagonal meshes 16a of the steel wire mesh 54a are temporarily overstretched, for example by a back and forth movement of the stretching elements 112a, 114a, 116a during the rotation of the rotatable roller 60'a.
  • the stretching unit 134a is arranged downstream of the rotatable roller 60a or that the stretching unit 134a is arranged separately from the production device 52a comprising the rotatable roller 60a and the twisting units 56a, 58a, 104a.
  • FIG. 10 shows a schematic flowchart of a manufacturing method for braiding the steel wire mesh 54a with the hexagonal meshes 16a.
  • two steel wires 10a, 12a of a steel wire batch are clamped into the test device 76a and the first twisting test attempt and/or the second twisting test attempt is/are carried out. If the first twisting test attempt and/or the second twisting test attempt is passed, the steel wires 10a, 12a of the steel wire batch now tested are used for producing a steel wire mesh 54a according to the invention and/or fed to the production device 52a.
  • the one (tested) steel wire 10a is fed to the first twisting unit 56a.
  • the further (tested) steel wire 12a is fed to the first twisting unit 56a.
  • the two steel wires 10a, 12a are twisted together.
  • the steel wires 10a, 12a are overtwisted in the production of the steel wire mesh 54a in the twisted regions 24a of the steel wire mesh 54a.
  • the steel wires 10a, 12a in the twisted regions 24a of the steel wire mesh 54a are twisted by at least half a twist, preferably by at least a full twist. After twisting, the twisted steel wires 10a, 12a spring back automatically by the twisted amount due to the high elasticity of high-strength steel, so that the geometry of the hexagonal meshes 16a according to the invention is established.
  • the resulting steel wire mesh 54a is gripped at the twisted regions 24a by the entrainment lugs 64a of the rotatable roller 60a and carried along with the movement of the rotatable roller 60a.
  • the hexagonal meshes 16a are overstretched in the method step 118a in directions parallel to the mesh size 18a by the entrainment lugs 64a, in particular by the engagement of the entrainment lugs 64a in the hexagonal meshes 16a.
  • the overstretched hexagonal meshes 16a After passing the rotatable roller 60a, the overstretched hexagonal meshes 16a automatically spring back by at least part of the elongation due to the high elasticity of high-strength steel, so that the geometry of the hexagonal meshes 16a according to the invention is established.
  • the hexagonal meshes 16a of the finished steel wire mesh 54a are additionally or alternatively stretched in at least one further method step 126a.
  • the hexagonal meshes 16a of the finished steel wire mesh 54a are stretched by the stretching elements 112a, 114a, 116a integrated into the rotatable roller 60'a or by stretching elements 112a, 114a, 116a stretched.
  • the stretched hexagonal meshes 16a spring back automatically by at least part of the stretching due to the high elasticity of high-strength steel, so that the geometry of the hexagonal meshes 16a according to the invention is established.
  • FIGS. Three further exemplary embodiments of the invention are shown in FIGS.
  • the following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, whereby with regard to components with the same designation, in particular with regard to components with the same reference numbers, the drawings and/or the description of the other exemplary embodiments, in particular Figures 1 to 10, can be referred.
  • the letter a follows the reference number of the exemplary embodiment in FIGS.
  • the letter a has been replaced by the letters b to d.
  • the steel wire mesh 54b has hexagonal meshes 16b.
  • the steel wire mesh 54b is formed from steel wires 10b, 12b, 14b.
  • the steel wires 10b, 12b, 14b are made of high-strength steel.
  • the steel wires 10b, 12b, 14b of the steel wire mesh 54b are twisted alternately with adjacent steel wires 10b, 12b, 14b of the steel wire mesh 54b to form the hexagonal meshes 16b.
  • the steel wires 10b, 12b, 14b twisted together form twisted regions 24b.
  • the twisted areas 24b of the alternative steel wire mesh 54b each comprise more than three consecutive twists 28b, 38b, 40b, 128b, 130a. In the example shown in FIG. 11, the twisted areas 24b of the alternative steel wire mesh 54b have five consecutive twists 28b, 38b, 40b, 128b, 130a.
  • FIG. 12 schematically shows a section through a steel wire 10c of a further alternative steel wire mesh 54c according to the invention.
  • the Steel Wire 10c is formed of high strength steel.
  • the high-strength steel of the steel wire 10c is formed of a stainless steel grade.
  • FIG. 13 schematically shows a section through a steel wire 10d of an additional further alternative steel wire mesh 54d according to the invention.
  • the steel wire 10d comprises a high-strength steel.
  • the steel wire 10d has a sheath 46d made of a stainless steel grade.
  • the steel wire 10d has a core 132d made of a non-stainless steel grade. Either both sections, jacket 46d and core 132d, or only the core 132d can be made of high-strength steel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Wire Processing (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

L'invention permet la production d'un grillage en acier (54a-d), notamment d'un grillage hexagonal, constitué de fils d'acier (10a-d, 12a-d, 14a-d) ayant des boucles hexagonales (16a-d), notamment destiné à être utilisé dans le secteur de la construction, de préférence destiné à être utilisé dans le domaine de la protection contre les catastrophes naturelles, les fils d'acier (10a-d, 12a-d, 14a-d) étant torsadés en alternance avec des fils d'acier adjacents (10a-d, 12a-d, 14a-d), et les fils d'acier (10a-d, 12a-d, 14a-d) étant constitués d'un acier haute résistance ou présentant au moins une âme de fil constituée d'acier haute résistance. Selon l'invention, un rapport, notamment un rapport moyen, entre une largeur de boucle (18a-d), notamment d'une largeur moyenne de boucle, des boucles hexagonales (16a-d), et une hauteur de boucle (20a-d), notamment une hauteur moyenne de boucle, mesurée perpendiculairement à la largeur de boucle (18a-d), des boucles hexagonales (16a-d), est d'au moins 0,75, de préférence d'au moins 0,8. L'invention concerne également un dispositif de production et un procédé de production.
EP22700921.4A 2021-01-14 2022-01-11 Grillage en acier constitué de fils d'acier ayant des boucles hexagonales, dispositif de production et procédé de production Active EP4171847B1 (fr)

Priority Applications (2)

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RS20240279A RS65404B1 (sr) 2021-01-14 2022-01-11 Čelična žičana mreža od čelične žice sa šestougaonim otvorima, uređaj za proizvodnju i proizvodni postupak
HRP20240332TT HRP20240332T1 (hr) 2021-01-14 2022-01-11 Čelična žičana mreža izrađena od čeličnih žica sa šesterokutnim petljama, uređaj za proizvodnju i postupak proizvodnje

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DE102021100678.3A DE102021100678A1 (de) 2021-01-14 2021-01-14 Stahldrahtgeflecht aus Stahldrähten mit sechseckigen Maschen, Herstellungsvorrichtung und Herstellungsverfahren
PCT/EP2022/050445 WO2022152697A1 (fr) 2021-01-14 2022-01-11 Grillage en acier constitué de fils d'acier ayant des boucles hexagonales, dispositif de production et procédé de production

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EP4171847A1 true EP4171847A1 (fr) 2023-05-03
EP4171847B1 EP4171847B1 (fr) 2024-01-10
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US (1) US20240058858A1 (fr)
EP (1) EP4171847B1 (fr)
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RU2118922C1 (ru) * 1996-01-18 1998-09-20 Иванов Игорь Алексеевич Устройство для изготовления проволочной сетки
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IT1395570B1 (it) * 2009-09-10 2012-10-16 Maccaferri Spa Off Rete metallica di protezione con fili intrecciati
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CN202767025U (zh) * 2011-12-22 2013-03-06 张绍华 一种低碳铝覆钢丝加筋固滨笼
CN202767089U (zh) * 2011-12-22 2013-03-06 张绍华 一种低碳铝覆钢丝固滨笼
WO2018146516A1 (fr) * 2017-02-09 2018-08-16 Officine Maccaferri S.P.A. Machine et procédé de fabrication d'un grillage renforcé et grillage renforcé
PL235814B1 (pl) 2018-06-15 2020-10-19 Ryszard Odziomek Druciana plecionka oraz sposób i urządzenie do wytwarzania drucianej plecionki
CN212688749U (zh) * 2020-07-06 2021-03-12 安平县安邦五金制品有限公司 一种钢绞六边形被动防护网

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CL2023001994A1 (es) 2023-12-29
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EP4171847B1 (fr) 2024-01-10
MX2023008271A (es) 2024-02-14
EP4171847C0 (fr) 2024-01-10
CA3205101A1 (fr) 2022-07-21
WO2022152697A1 (fr) 2022-07-21
CN116783016A (zh) 2023-09-19
PL4171847T3 (pl) 2024-05-06
AU2022207151B2 (en) 2024-05-09
US20240058858A1 (en) 2024-02-22
KR20230121886A (ko) 2023-08-21
JP2024505424A (ja) 2024-02-06
AU2022207151A1 (en) 2023-07-27
DE102021100678A1 (de) 2022-07-14

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