EP0362055A1 - Verfahren und Anlage zur Herstellung von glattem Stahldraht mit kleinem Durchschnitt - Google Patents

Verfahren und Anlage zur Herstellung von glattem Stahldraht mit kleinem Durchschnitt Download PDF

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Publication number
EP0362055A1
EP0362055A1 EP89402647A EP89402647A EP0362055A1 EP 0362055 A1 EP0362055 A1 EP 0362055A1 EP 89402647 A EP89402647 A EP 89402647A EP 89402647 A EP89402647 A EP 89402647A EP 0362055 A1 EP0362055 A1 EP 0362055A1
Authority
EP
European Patent Office
Prior art keywords
wire
rollers
section
straightening
blocks
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
EP89402647A
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English (en)
French (fr)
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EP0362055B1 (de
Inventor
Paul Canobbio
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ACOR ACIERS DE CONSTRUCTION RATIONALISES
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ACOR ACIERS DE CONSTRUCTION RATIONALISES
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Priority to AT89402647T priority Critical patent/ATE94435T1/de
Publication of EP0362055A1 publication Critical patent/EP0362055A1/de
Application granted granted Critical
Publication of EP0362055B1 publication Critical patent/EP0362055B1/de
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    • 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
    • B21C19/00—Devices for straightening wire or like work combined with or specially adapted for use in connection with drawing or winding machines or apparatus
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/08—Dies; Selection of material therefor; Cleaning thereof with section defined by rollers, balls, or the like

Definitions

  • the subject of the present invention is a method and an installation for manufacturing smooth steel wire of small section having a diameter of between approximately 3 and 4.5 mm from steel wire rod having a diameter of between approximately 5 and 6 , 5 mm, by cold deformation by successive passes for the production of concrete reinforcement or welded mesh.
  • Smooth steel wire for the manufacture of concrete reinforcement or welded mesh must have a certain number of specific characteristics which are linked either to the need to carry out assemblies by electric welding in the case of welded mesh, or more generally for end use in reinforced concrete.
  • the surface condition of the smooth wires produced is important in view of the subsequent operations carried out on these wires, but the mechanical characteristics of the steel wires at the end of their manufacture are essential in order to guarantee users conditions of use which respect various safety standards and rules.
  • Multipass wire drawing machines of various types are already known in the conventional way which make it possible to produce smooth metallic wires of small diameter, for example of the order of 3 to 4.5 mm, from wire rod of larger cross section obtained by rolling to hot.
  • These drawing machines include several die-capstan assembly allowing successive passes to arrive at the desired work hardening rate.
  • the brittleness of the wire produced by cold drawing is great, the wire undergoes a loss of elongation, in particular at the level of plastic deformation, and it is not possible to control the residual stresses within the highly cold worked steel. nor by guaranteeing a reliability of the diameter of the wire produced.
  • the drawing lubricant, such as soap powder, applied to each pass forms on the surface of the wire a harmful layer for the subsequent operations, in particular welding, which are carried out on the wire.
  • the energy consumption of wire drawing machines is always high. The dies wear out quickly, causing production stoppages. Finally, wire breaks during drawing due to the brittleness of the metal and the significant tensile force in the dies are relatively frequent.
  • a descaling operation is generally generally carried out before drawing and after a drawing operation after drawing, which are intended to facilitate welding.
  • These descaling and straightening operations are carried out on machines independent of the wire drawing machines and associated with the welding installations.
  • the straightening operation makes it possible to better prepare the wire before the welding operation but does not reduce the brittleness of the wire and cannot remedy the various drawbacks mentioned above.
  • the present invention aims to remedy the various aforementioned drawbacks and to improve both the quality of the wire produced by increasing the elongation characteristics of the wire, productivity by limiting production stoppages and profitability by reducing manufacturing costs.
  • the object of the invention is also to allow an improvement in the quality of the product and an increase in productivity by reusing part of the existing wire drawing installations which can be easily adapted to constitute machines in accordance with the present invention at a reduced cost, which limits investments.
  • Another subject of the invention is an installation for manufacturing smooth steel wire of small section, in particular for concrete reinforcement or welded mesh from wire rod by cold deformation in successive passes, characterized in that it includes a single inlet reservoir to contain a soap powder lubricant, a set of roller drawing blocks each comprising two pairs of rollers arranged in the vicinity of one another in perpendicular planes containing the wire and respectively parallel to first and second predetermined reference directions in order to achieve, during successive passes by cold rolling, progressive reductions in section with determined decreasing work hardening rates of between approximately 28% and 15%, a calibration block with rollers arranged downstream of the roller drawing blocks and comprising two pairs of rollers arranged in the vicinity one of e the other along planes perpendicular to each other containing the wire and respectively parallel to said first and second reference directions to achieve a very small additional pass providing only a reduction in wire diameter at most equal to about one tenth of a millimeter, a first series of an odd number of straightening rollers arranged in staggered rows in a first plane
  • Each roller drawing block comprises a first pair of rollers located in a plane parallel to said first reference direction and comprising grooves of oval cross section, and a second pair of rollers located immediately downstream of the first pair of rollers in a plane parallel to said second reference direction and comprising grooves of circular section.
  • the installation comprises a frame of wire drawing bench, traction capstans, speed control jacks and deflection pulleys of a wire drawing bench of the direct passage type without sliding and without torsion usually arranged between wire drawing blocks made up of a soap powder reserve and a die and the roller rolling blocks are arranged at the location of the conventional drawing blocks on the frame of the drawing bench.
  • FIG. 1 schematically shows a top view of the assembly of an installation according to the invention making it possible to continuously manufacture in a simple manner with high productivity a smooth wire of small section and having good mechanical characteristics, from 'A wire rod obtained by hot rolling such as a wire of diameter equal for example to 5.50 or 6.50 mm.
  • the wire produced can have a diameter for example of 3 mm, 3.50 mm, 4 mm or 4.50 mm.
  • the wire rod is made of carbon steel such as hot rolled electrical steel.
  • the installation 100 of FIG. 1, part of which is shown in perspective in FIG. 5, can present the general configuration of a traditional multi-pass wire drawing bench with a succession of stations arranged in series and treating the wire continuously to reduce its section on each pass.
  • Figure 1 shows an installation 100 with four passes, but a different number of passes, for example between three and six is quite possible.
  • the installation comprises at each work station, on a frame 180, a traction capstan 111, 112, 113, 114, a speed control jack 121, 122, 123 , 124 and a return pulley 132, 133, 134, 135 so as to define a machine for direct passage of the wire without slipping or twisting thereof unlike the case of wire drawing machines of the accumulation type.
  • the installation according to the invention may thus include a certain number of elements common to known wire drawing machines, such as the frame 180, the traction capstans 111 to 114, the jacks 121 to 124, the deflection pulleys 131 to 135 as well as the drive elements (electric motors, reducers) or cooling of the capstans 111 to 114.
  • elements common to known wire drawing machines such as the frame 180, the traction capstans 111 to 114, the jacks 121 to 124, the deflection pulleys 131 to 135 as well as the drive elements (electric motors, reducers) or cooling of the capstans 111 to 114.
  • the machine of FIG. 1 only has a single reservoir 140 of lubricant of the soap powder type placed at the entrance to the installation 100 and which is sufficient for all the cold deformation operations then carried out continuously in several passes within the installation 100. Furthermore, the installation 100 does not have any die unlike conventional drawing machines.
  • a block 101, 102, 103, 104 of roller drawing which in fact ensures a cold rolling operation, acts on the wire of progressively reduced section, identified by the successive references 10a, 11, 12, 13, to further reduce its section even more.
  • the wire 14 is introduced into a roller calibration block 105 whose structure may be similar to that of the rolling blocks 101 to 104, but which achieves only a very weak pass .
  • the wire 15 calibrated in the block 105 is then subjected to a straightening or relaxation operation in a first straightening block 160, then the wire 16 straightened in the block 160 is subjected to a second straightening operation in a second straightening block 170 to provide a smooth wire 17 of small section ready for use to form a concrete reinforcement or used for the production of welded mesh.
  • An essential characteristic of the present invention resides in the manner in which all the cold deformations of the steel wire are carried out within the installation 100 to guarantee the production of a smooth steel wire with improved and controlled characteristics.
  • a cold deformation of the starting machine wire is carried out which combines a cold rolling process and a straightening process by making them compatible with one another with a view to improving the metallurgical plan of the final product manufactured continuously while improving productivity.
  • the lubricated wire 10a passes through the blocks 101 to 104 of roller drawing which each provide cold rolling by orthogonal deformations in perpendicular planes using two pairs of rollers 1, 2, 3, 4 (FIG. 2) arranged in the vicinity of one another along planes perpendicular to each other containing the wire and respectively parallel to first and second predetermined reference directions which can be for example a vertical direction V and a horizontal direction H .
  • the calibration block 105 itself comprises two pairs of rollers comparable to the rollers 1, 2, 3, 4 of the blocks 101 to 104 and arranged in the same way in two orthogonal planes parallel to the directions V and H.
  • the first straightening block 160 comprises a first series of an odd number, for example 5, 7 or 9, of straightening rollers 161 to 165 having a diameter smaller than that of the rolling or sizing rollers 1, 2, 3, 4 and staggered in a plane containing the wire 15 and parallel to the predetermined vertical direction V.
  • the second straightening block 170 comprises a second series of the same odd number, for example 5, 7 or 9, of straightening rollers 171 to 175 having the same diameter as that of the straightening rollers 161 to 165 and staggered in a plane containing the wire 16 and perpendicular to the plane of the rollers 161 to 165, thus being parallel to the predetermined horizontal direction H.
  • rollers 1, 2 of the first pair of rollers 1, 2 placed vertically and acting first on the wire within a bl ° C of cold rolling 101, 102, 103 or 104 have grooves 81, 82 of oval cross section with a larger groove dimension in the direction parallel to the axis of the rollers 1, 2.
  • the rollers 3, 4 of the second pair of rollers placed horizontally and acting immediately downstream of the first pair of rollers, for example at a distance of the order of a few centimeters have grooves 83, 84 of circular section.
  • the rollers of the calibration block 105 can have the same configuration as the rollers 1 to 4 of the cold rolling blocks 101 to 104.
  • the calibration block 105 essentially aims to guarantee the reliability of the final diameter as well as the metric mass and achieves only a very small pass of the order of a tenth of millimeter.
  • the hardening rates used are a function of the diameters of input and output wire and aim to maintain an identical metal flow rate on each pass.
  • the blocks 101 to 104 carry out progressive successive reductions in section with successive passes with determined decreasing work hardening rates of between approximately 28 and 15%.
  • FIG. 6 shows an exemplary embodiment of a rolling block with two pairs of rollers 1, 2, 3, 4, such as block 101, but all the blocks 101 to 105 may have structures similar to that of the first block 101 shown in Figure 1.
  • Clevis 201, 202 supporting the axes 221, 222 of the rollers 1, 2 of the first pair of rollers placed vertically are mounted around axes 211, 212 on a support frame 91 fixed on the base 90 of the block 101 intended to be mounted on the frame 180.
  • Adjusting screws 231, 232 allow the position of the yokes 201, 202 to be slightly modified by rotation about the axes 211, 212 in order to adjust the spacing between the rollers 1, 2.
  • two yokes 203, 204 for supporting the axes 223, 224 of the rollers 3, 4 of the second pair of rollers placed horizontally are mounted around axes 213, 214 on a second support frame 92 fixed on the base 90 or the first frame 91.
  • Adjustment screws 233, 234 make it possible to adjust the spacing between the rollers 3, 4 by rotation of the yokes 203, 204 around the axes 213, 214.
  • the references 251, 252, 253, 254 designate the cooling water supply and return conduits towards the screeds 201 to 204 for supporting the rollers 1 to 4.
  • the circulation of water through the screeds supporting the rollers and the axes of these rollers makes it possible to efficiently dissipate the heat created during the rolling of the wire 10a which after passage between the grooves 81, 82 of the rollers 1, 2 then the grooves 83, 84 of the rollers 3, 4 has undergone hardening and orthogonal deformations well oriented and leaves with a reduced section (section of wire 11).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Wire Processing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Metal Rolling (AREA)
EP89402647A 1988-09-28 1989-09-27 Verfahren und Anlage zur Herstellung von glattem Stahldraht mit kleinem Durchschnitt Expired - Lifetime EP0362055B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89402647T ATE94435T1 (de) 1988-09-28 1989-09-27 Verfahren und anlage zur herstellung von glattem stahldraht mit kleinem durchschnitt.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812693A FR2636865A1 (fr) 1988-09-28 1988-09-28 Procede et installation de fabrication de fil d'acier lisse de faible section
FR8812693 1988-09-28

Publications (2)

Publication Number Publication Date
EP0362055A1 true EP0362055A1 (de) 1990-04-04
EP0362055B1 EP0362055B1 (de) 1993-09-15

Family

ID=9370497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89402647A Expired - Lifetime EP0362055B1 (de) 1988-09-28 1989-09-27 Verfahren und Anlage zur Herstellung von glattem Stahldraht mit kleinem Durchschnitt

Country Status (5)

Country Link
EP (1) EP0362055B1 (de)
AT (1) ATE94435T1 (de)
DE (1) DE68909159T2 (de)
ES (1) ES2046512T3 (de)
FR (1) FR2636865A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467109A1 (de) * 1990-07-17 1992-01-22 IMPIANTI INDUSTRIALI Spa Verfahren zum Kaltverarbeiten von Stahldraht kleinen Querschnitts und Vorrichtung zur Durchführung dieses Verfahrens
CN102140767A (zh) * 2011-03-14 2011-08-03 湖北福星科技股份有限公司 子午轮胎钢帘线弓形校直器
IT202200005216A1 (it) * 2022-03-17 2023-09-17 M E P Macch Elettroniche Piegatrici Spa Apparato e procedimento per raddrizzare un filo metallico
CN117299846A (zh) * 2023-10-12 2023-12-29 杭州森盛金属制品有限公司 一种全自动钢丝拉伸加工成型装置及其加工工艺
CN117299846B (zh) * 2023-10-12 2024-06-07 滦州市恒皓科技有限公司 一种全自动钢丝拉伸加工成型装置及其加工工艺

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10119569B4 (de) * 2001-04-21 2010-02-25 "Alwag" Tunnelausbau Gesellschaft Mbh Vorrichtung zur spanlosen Umformung
CN113894168A (zh) * 2021-10-22 2022-01-07 烟台万隆真空冶金股份有限公司 一种接触线的成型方法
CN117324411B (zh) * 2023-12-01 2024-01-23 河北绿峰环保科技有限公司 一种具有调直机构的稀土合金丝拔丝机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310916A (en) * 1941-08-25 1943-02-09 Ajax Mfg Co Apparatus for drawing and straightening wire stock
DE952524C (de) * 1950-06-24 1956-11-15 Karl Fuhr Ziehmatrize fuer Halbzeug, z.B. Profilstangen, mit mehreren, in einzelnen gabelfoermig ausgebildeten Aufnahmestuecken frei drehbar gelagerten Walzen
US3498097A (en) * 1967-04-28 1970-03-03 Nissho Ltd Wire drawing apparatus and method
FR2340146A1 (fr) * 1976-02-05 1977-09-02 Fruchard Ets G Perfectionnement aux trefileuses-profileuses a galets
US4216666A (en) * 1978-09-18 1980-08-12 Extruded Metals Method of relieving stress in extruded sections
US4218906A (en) * 1978-02-15 1980-08-26 Keiichiro Yoshida Material tensioning method and apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310916A (en) * 1941-08-25 1943-02-09 Ajax Mfg Co Apparatus for drawing and straightening wire stock
DE952524C (de) * 1950-06-24 1956-11-15 Karl Fuhr Ziehmatrize fuer Halbzeug, z.B. Profilstangen, mit mehreren, in einzelnen gabelfoermig ausgebildeten Aufnahmestuecken frei drehbar gelagerten Walzen
US3498097A (en) * 1967-04-28 1970-03-03 Nissho Ltd Wire drawing apparatus and method
FR2340146A1 (fr) * 1976-02-05 1977-09-02 Fruchard Ets G Perfectionnement aux trefileuses-profileuses a galets
US4218906A (en) * 1978-02-15 1980-08-26 Keiichiro Yoshida Material tensioning method and apparatus
US4216666A (en) * 1978-09-18 1980-08-12 Extruded Metals Method of relieving stress in extruded sections

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DRAHT, vol. 33, no. 5, mai 1982, pages 237-242, Bamberg, DE; P. FUNKE: "Das Walzziehen im Vergleich zum Gleitziehen" *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467109A1 (de) * 1990-07-17 1992-01-22 IMPIANTI INDUSTRIALI Spa Verfahren zum Kaltverarbeiten von Stahldraht kleinen Querschnitts und Vorrichtung zur Durchführung dieses Verfahrens
CN102140767A (zh) * 2011-03-14 2011-08-03 湖北福星科技股份有限公司 子午轮胎钢帘线弓形校直器
IT202200005216A1 (it) * 2022-03-17 2023-09-17 M E P Macch Elettroniche Piegatrici Spa Apparato e procedimento per raddrizzare un filo metallico
WO2023175644A1 (en) * 2022-03-17 2023-09-21 M.E.P. Macchine Elettroniche Piegatrici S.P.A. Apparatus and method for straightening a metal wire
CN117299846A (zh) * 2023-10-12 2023-12-29 杭州森盛金属制品有限公司 一种全自动钢丝拉伸加工成型装置及其加工工艺
CN117299846B (zh) * 2023-10-12 2024-06-07 滦州市恒皓科技有限公司 一种全自动钢丝拉伸加工成型装置及其加工工艺

Also Published As

Publication number Publication date
FR2636865A1 (fr) 1990-03-30
ATE94435T1 (de) 1993-10-15
FR2636865B1 (de) 1994-04-22
EP0362055B1 (de) 1993-09-15
DE68909159D1 (de) 1993-10-21
DE68909159T2 (de) 1994-04-14
ES2046512T3 (es) 1994-02-01

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