EP2754511B1 - Methode zur Herstellung einer Gittermatte - Google Patents

Methode zur Herstellung einer Gittermatte Download PDF

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Publication number
EP2754511B1
EP2754511B1 EP14150765.7A EP14150765A EP2754511B1 EP 2754511 B1 EP2754511 B1 EP 2754511B1 EP 14150765 A EP14150765 A EP 14150765A EP 2754511 B1 EP2754511 B1 EP 2754511B1
Authority
EP
European Patent Office
Prior art keywords
steel wire
wire rod
further processing
mesh
diameter
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.)
Active
Application number
EP14150765.7A
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English (en)
French (fr)
Other versions
EP2754511A1 (de
Inventor
Tarmo Heikkilä
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.)
Tammet Oy
Original Assignee
Tammet Oy
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 Tammet Oy filed Critical Tammet Oy
Priority to PL14150765T priority Critical patent/PL2754511T3/pl
Publication of EP2754511A1 publication Critical patent/EP2754511A1/de
Application granted granted Critical
Publication of EP2754511B1 publication Critical patent/EP2754511B1/de
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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
    • B21F27/08—Making wire network, i.e. wire nets with additional connecting elements or material at crossings
    • B21F27/10—Making wire network, i.e. wire nets with additional connecting elements or material at crossings with soldered or welded crossings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
    • B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
    • B21C43/04—Devices for de-scaling wire or like flexible work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/02—Straightening
    • B21F1/026—Straightening and cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • 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
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/20—Making special types or portions of network by methods or means specially adapted therefor of plaster-carrying network
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal

Definitions

  • the invention relates to a method for manufacturing a steel wire mesh according to the preamble of the enclosed independent claim.
  • a mesh manufactured from steel wire a so-called steel wire mesh for mining applications
  • the used steel wire mesh for mining applications should conform to the walls of the tunnel, so the steel wire mesh for mining applications should be manufactured from a wire having an appropriate ductility.
  • the steel wire mesh for mining applications manufactured should, however, be relatively easy to shape, so that it can be shaped by mechanical pressing to conform to the walls of the tunnel.
  • the steel wire meshes for mining applications are manufactured from wire rod, so that the wire rod made of steel having a specific diameter is first guided to a cold forming stage, in which the diameter of the wire rod is substantially decreased to a desired wire diameter to be used in the final mesh structure.
  • the diameter of the wire rod is typically decreased by 8-30%.
  • Cold forming can either be carried out by rolling or cold extension. Cold forming requires one or several successive rolls or drawing stones having a different aperture, since the diameter of the rod can only be decreased a certain amount at once. Cold forming reinforces the wire, so that after the cold forming the steel wire has to be heat treated in order to achieve the desired softness and shapability, so that the wire can be used in the manufacture of steel wire mesh for mining applications.
  • the heat treatment consumes remarkable amounts of energy and increases thus the production costs of the mesh manufactured from the steel wire.
  • the annealed steel wire is straightened and cut into the desired length, after which a desired mesh structure is prepared from the wire by welding.
  • Document AU 2002300805 discloses a method, which involves cold working a wire uch that the cross-sectional area of the wire is reduced by 5% to 15% and the wire retains a ductility greater than 5%.
  • the object of the present invention is to provide a method for manufacturing a steel wire mesh, preferably a steel wire mesh for mining applications, from a steel wire rod, which method is simpler and thus more cost-effective than the conventional production method.
  • the method according to the invention is characterised in what is presented in the characterising part of the independent claim.
  • a typical method of the invention for manufacturing a steel wire mesh, preferably a steel wire mesh for mining applications, from steel wire rod is described in claim 1.
  • a typical system for manufacturing a steel wire mesh, preferably a steel wire mesh for mining applications, from steel wire rod comprises at least
  • the system is free from heat treatment means and the further processing means of the steel wire rod are arranged so that the average diameter of the steel wire rod does not substantially change in the further processing stage.
  • the average diameter the steel wire rod does not substantially change, i.e. the average diameter of the wire rod remains substantially the same.
  • the steel wire mesh which is manufactured by the method of the invention, is used in the walls of mine tunnels and corresponding structures to reinforce the tunnel structure and to prevent the falling of loose rocks.
  • the mesh manufactured by the method according to the invention is thus used as a so-called steel wire mesh for mining applications.
  • the steel wire mesh for mining applications is typically a planar and ductile steel mesh, which can be attached to the wall of the mine tunnel or corresponding structure, and after attaching the mesh the tunnel walls can be shotcreted.
  • the steel wire mesh for mining applications or corresponding mesh structure having a sufficient strength and shapability can be easily and simply manufactured from the steel wire rod having a specific diameter, which steel wire rod meets the desired strength and shapability requirements, without a separate heat treatment stage.
  • the steel wire rod which used as a raw material in the method according to the invention for manufacturing a steel wire mesh is only guided through a further processing stage and straightening stage before forming the actual mesh structure by welding.
  • the steel wire rod is typically guided straight from the further processing stage to the straightening stage, optionally through intermediate coiling, but without any intermediate stages, which would affect the strength properties of the wire.
  • the manufacturing method according to the invention which method is free from the heat treatment stages of the steel wire rod, is remarkably simpler and more cost-effective than the manufacturing method according to the prior art.
  • the further processing stage is only a so-called calibration stretch, the meaning of which is not to substantially change the average diameter of the wire rod, but the average diameter of the steel wire rod is mainly the same before the further processing stage and after it.
  • the average diameter of the steel wire rod means the mathematical mean value of the diameters measured at several locations of the wire.
  • the further processing is however performed, so that roll scale and other possible slag and impurities, which hinder the welding of the mesh from the steel wire, can be removed from the surface of the steel wire rod to be used as a material of the mesh.
  • the diameter of the wire is formed more circular, since the cross-section of the unprocessed steel wire rod is typically not entirely circular, but it may be oval-shaped or otherwise deformed.
  • the change of the average diameter of the wire rod is 0.01-0.75%.
  • the further processing i.e. the calibration stretch
  • the further processing is performed by guiding the steel wire rod through at least one drawing stone, drawing stone aperture being a diameter which is substantially the same as the average diameter of the steel wire rod.
  • the steel wire rod is guided through only one drawing stone, wherein the process is as simple as possible.
  • the further processing can be performed in a method according to the invention by directing the steel wire rod through one or more rolling units, so that the average diameter of the steel wire rod does not substantially change.
  • the steel wire rod is guided in the further processing stage through only one rolling unit so that the average diameter of the wire rod does not substantially change.
  • the production speed of this stage can be kept high.
  • the production speed which here means the propagation speed of the steel wire rod in the further processing stage, is substantially the same as the maximum speed of a wire coiling unit used in the further processing.
  • the production rate is for example about 10 m/s. The production rate is thus not affected by directing the steel wire rod through the further processing means, such as drawing stone or twin rolls.
  • the steel wire rod used in the method according to the invention is a wire manufactured from steel by hot rolling, the diameter of which wire is typically substantially round.
  • the elongation (A 10 ) of the steel wire rod used in the method according to the invention is typically 25 - 35%.
  • the tensile strength R m of the steel wire rod is 370 - 420 N/mm 2 and the yield strength R P0,20 is 320 - 370 N/mm 2 .
  • a typical steel wire mesh preferably a steel wire mesh for mining applications, is manufactured from substantially smooth-surface steel wire, i.e. from further processed rod wire.
  • steel wire rod having a diameter of 5.5 mm or 6 mm is used as a material of the steel wire mesh for mining applications. Since the method of the invention does not substantially affect to the diameter of the wire, the steel wire mesh according to the invention is thus manufactured from the steel wire, the diameter of which is about 5.5 mm or 6 mm.
  • the diameter of the wire affects the mesh size of the mesh to be manufactured, so that the desired strength and weight of the mesh is achieved.
  • the diameter of the wire and the mesh size of the mesh to be manufactured from it is chosen according to the purpose of use.
  • the mesh-like structure is formed of cut processed parts of the steel wire rod, i.e. steel wire, and the parts of the wire rod overlapping in the structure are welded together at locations, where the parts intersect.
  • steel wire rod 2 used as a raw material of the mesh-like structure 1 is guided to a further processing stage 10, in which the wire rod 2 is guided either through at least one drawing stone or rolling unit so that the roll scale is removed from the surface of the wire rod.
  • the processed wire rod 3 can be recoiled before the processed wire rod 3, i.e. the steel wire, is further guided to the next stage 20, in which the steel wire 3 is straightened and cut into parts 4, 4' having a desired length.
  • the straightening of the wire means smoothing out the wire, so that substantially straight elongated parts 4, 4' can be cut from the wire.
  • a mesh-like structure preferably a steel wire mesh for mining applications 1, is formed by welding from the parts 4, 4' cut from the steel wire 3.
  • the mesh structure 1 is welded at the intersections, where the parts 4, 4' arranged in different directions relative to each other overlap.
  • the manufacture of the mesh employs a wire rod made of steel, which wire rod has
  • the wire rod is drawn through a drawing stone, which has an aperture of 5.5 mm, or through a rolling unit, which is set for the diameter of 5.5 mm, so that the roll scale can be removed from the surface of the wire rod (so-called calibration stretch).
  • the average diameter of the processed wire rod is not more than 1.5% smaller than the diameter of the unprocessed wire rod.
  • the smooth surface steel wire is straightened and cut into parts having a desired length.
  • the mesh-like structure having a desired size is welded from the cut parts.
  • the size of the steel wire mesh is for example 2270 mm x 2530 mm, and the mesh size of the mesh is 75 mm x 75 mm, wherein the desired strength and shapability properties of the mesh are achieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Wire Processing (AREA)
  • Metal Extraction Processes (AREA)
  • Metal Rolling (AREA)

Claims (7)

  1. Verfahren zur Herstellung eines Stahldrahtgitters (1) aus Stahlwalzdraht (2) für den Bergbau, wobei bei dem Verfahren
    - Stahlwalzdraht (2) mit einem spezifischen Durchmesser einer weiteren Verarbeitungsstufe (10) zugeführt wird, in der Walzzunder und andere mögliche Verunreinigungen von der Oberfläche des Stahlwalzdrahtes entfernt werden,
    - der bearbeitete Stahlwalzdraht (3) geradegerichtet und in Teile mit einer gewünschten Länge geschnitten wird,
    - das gewünschte Stahldrahtgitter (1) aus den geschnittenen Stahldrahtteilen (4, 4') geschweißt wird,
    wobei das Verfahren frei von Wärmebehandlungsstufen ist,
    dadurch gekennzeichnet, dass
    - der mittlere Durchmesser des Stahlwalzdrahtes (2) in der weiteren Verarbeitungsstufe im Wesentlichen gleich bleibt und der Durchmesser des Stahlwalzdrahtes kreisförmiger geformt wird, wobei die Änderung des mittleren Durchmessers des Stahlwalzdrahtes 0,01-0,75% beträgt,
    - Der Stahlwalzdraht nur durch die weitere Verarbeitungsstufe und die Gerade-Richtstufe geführt wird, bevor die eigentliche Gitterstruktur durch Schweißen geformt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die weitere Verarbeitung (10) des Stahlwalzdrahtes durch Führen des Stahlwalzdrahtes (2) durch mindestens einen Ziehstein erfolgt, wobei die Ziehsteinöffnung einen Durchmesser, der im Wesentlichen gleich dem Durchmesser des Stahlwalzdrahtes, ist aufweist.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die weitere Verarbeitung (10) durch Führen des Stahlwalzdrahtes (2) durch eine oder mehrere Walzeinheiten erfolgt.
  4. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Stahlwalzdraht typischerweise direkt von der weiteren Verarbeitungsstufe zu einem Gerade-Richtstufe geführt wird, nur durch eine optionale Zwischenwicklung, jedoch ohne Zwischenschritte, die die Festigkeitseigenschaften des Stahldrahtes beeinflussen würden.
  5. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Weitergabegeschwindigkeit des Stahlwalzdrahtes in der weiteren Verarbeitungsstufe im Wesentlichen gleich der maximalen Geschwindigkeit einer bei der weiteren Verarbeitung verwendeten Drahtwickeleinheit ist.
  6. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Dehnung (A10) des Stahlwalzdrahtes 25 - 35% und seine Zugfestigkeit Rm 370 - 420 N/mm2 beträgt.
  7. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der mittlere Durchmesser des Stahlwalzdrahtes (2) etwa 5,5 mm oder 6 mm beträgt.
EP14150765.7A 2013-01-11 2014-01-10 Methode zur Herstellung einer Gittermatte Active EP2754511B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14150765T PL2754511T3 (pl) 2013-01-11 2014-01-10 Sposób produkcji siatki z drutu stalowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20135036A FI125869B (fi) 2013-01-11 2013-01-11 Menetelmä teräslangasta valmistetun kaivosverkon valmistamiseksi sekä kaivosverkon käyttö

Publications (2)

Publication Number Publication Date
EP2754511A1 EP2754511A1 (de) 2014-07-16
EP2754511B1 true EP2754511B1 (de) 2018-08-08

Family

ID=49955195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14150765.7A Active EP2754511B1 (de) 2013-01-11 2014-01-10 Methode zur Herstellung einer Gittermatte

Country Status (7)

Country Link
EP (1) EP2754511B1 (de)
ES (1) ES2691123T3 (de)
FI (1) FI125869B (de)
LT (1) LT2754511T (de)
PL (1) PL2754511T3 (de)
PT (1) PT2754511T (de)
SE (1) SE537141C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108787767A (zh) * 2018-06-15 2018-11-13 金华市永达金属结构有限公司 一种金属线拉丝机及使用方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017098082A1 (en) * 2015-12-07 2017-06-15 Tammet Oy Mesh for mining and subterranean constructions
CN107876580B (zh) * 2017-09-30 2019-09-27 李文华 一种带有调直去锈的多功能钢丝卷线机
CN111014318A (zh) * 2019-12-17 2020-04-17 江西云泰铜业有限公司 一种铜材生产加工用拔丝装置
CN111691048A (zh) * 2020-07-01 2020-09-22 海宁艾力针织有限公司 一种方便控制的栽绒绒线等距切割设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1281466B1 (it) * 1995-12-22 1998-02-18 Impianti Industriali Spa Procedimento di produzione di reti elettrosaldate e relativo dispositivo
AT408196B (de) * 1999-03-02 2001-09-25 Evg Entwicklung Verwert Ges Verfahren und anlage zum herstellen von gittermatten
AU2002300805B2 (en) * 2001-08-28 2007-02-15 The Australian Steel Company (Operations) Pty Ltd Metal mesh and method for producing a wire component therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108787767A (zh) * 2018-06-15 2018-11-13 金华市永达金属结构有限公司 一种金属线拉丝机及使用方法

Also Published As

Publication number Publication date
SE537141C2 (sv) 2015-02-17
ES2691123T3 (es) 2018-11-23
PT2754511T (pt) 2018-11-08
SE1350347A1 (sv) 2014-07-12
PL2754511T3 (pl) 2019-01-31
FI20135036A (fi) 2014-07-12
EP2754511A1 (de) 2014-07-16
FI125869B (fi) 2016-03-15
LT2754511T (lt) 2018-11-12

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