EP3650572A1 - Fil d'acier plaqué d'aluminium fondu - Google Patents

Fil d'acier plaqué d'aluminium fondu Download PDF

Info

Publication number
EP3650572A1
EP3650572A1 EP17916828.1A EP17916828A EP3650572A1 EP 3650572 A1 EP3650572 A1 EP 3650572A1 EP 17916828 A EP17916828 A EP 17916828A EP 3650572 A1 EP3650572 A1 EP 3650572A1
Authority
EP
European Patent Office
Prior art keywords
steel wire
hot
dip aluminum
wire
aluminum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17916828.1A
Other languages
German (de)
English (en)
Other versions
EP3650572A4 (fr
Inventor
Shinichi Kamoshida
Tadaaki Miono
Yasunori Hattori
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Nisshin Co Ltd
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 Nippon Steel Nisshin Co Ltd filed Critical Nippon Steel Nisshin Co Ltd
Publication of EP3650572A1 publication Critical patent/EP3650572A1/fr
Publication of EP3650572A4 publication Critical patent/EP3650572A4/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/12—Aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/261—After-treatment in a gas atmosphere, e.g. inert or reducing atmosphere
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/38—Wires; Tubes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/50—Controlling or regulating the coating processes
    • C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing

Definitions

  • the present invention relates to a hot-dip aluminum-coated steel wire. More specifically, the present invention relates to a hot-dip aluminum-coated steel wire being excellent in twisting property, which can be suitably used in, for example, a wire harness of an automobile and the like, and a method for producing the same.
  • hot-dip aluminum-coated used in the term of the hot-dip aluminum-coated steel wire reveals a kind of aluminum plating.
  • the hot-dip aluminum-coated steel wire means a steel wire to which aluminum plating has been applied by dipping a steel wire in molten aluminum, and continuously drawing up the steel wire from the molten aluminum.
  • the twisting property means a property showing that a steel wire is hard to be broken when the steel wire is twisted.
  • a twisted wire As an electric wire which is used in a wire harness of an automobile and the like, a twisted wire has been used.
  • the twisted wire has been produced by using hot-dip aluminum plated steel wires produced by applying molten aluminum plating to steel core wires in plural such as 7, 19 or the like, and carrying out twisting of the hot-dip aluminum plated steel wires.
  • the hot-dip aluminum-coated steel wires which are to be used in the twisted wire are twisted.
  • the twist of the hot-dip aluminum-coated steel wires becomes greater, the hot-dip aluminum-coated steel wires come to be broken. Accordingly, an index for preventing the hot-dip aluminum-coated steel wires from torsional breaking has been required.
  • a hot-dip aluminum-coated steel wire having improved resistance to twist there has been proposed a hot-dip aluminum-coated steel wire to which drawing has not been applied after hot-dip aluminum-coating, in which the hot-dip aluminum-coated steel wire has a steel core having a diameter of 0.05 to 0.50 mm as a core material, and an amount of molten aluminum deposited to the hot-dip aluminum-coated steel wire is uniformized so that an average diameter D A (mm) and a minimum diameter D MIN (mm) in its longitudinal direction satisfy the formula (1): D A ⁇ D MIN / D A ⁇ 0.10 (see claims 1 and 2 of Patent literature 1).
  • Patent literature 1 Japanese patent unexamined publication No. 2014-185355
  • a twisting number of the resulting hot-dip aluminum-coated steel wire will be several hundred times per 100 mm of a length of the hot-dip aluminum-coated steel wire in many cases, even though the hot-dip aluminum-coated steel wire does not satisfy the relation shown by the above-mentioned formula (1).
  • the hot-dip aluminum-coated steel wire has a certain degree of twisting property even though wire-drawing has been applied to the hot-dip aluminum-coated steel wire.
  • the present invention has been made in view of the above-mentioned prior art, and an object according to the present invention is to provide a hot-dip aluminum-coated steel wire being excellent in twisting property in applying twisting thereto, and a method for producing the same.
  • the present invention relates to:
  • a hot-dip aluminum-coated steel wire being excellent in twisting property in applying twisting thereto, and a method for producing the same are provided.
  • Fig. 1 is a schematic explanatory view showing one embodiment for producing a hot-dip aluminum-coated steel wire according to the present invention.
  • Fig. 2 is a schematic cross-sectional view showing a boundary between a steel wire and a surface of molten aluminum when the steel wire is drawn up from the molten aluminum in producing the hot-dip aluminum-coated steel wire according to the present invention.
  • a hot-dip aluminum-coated steel wire 3 can be produced by dipping a steel wire 2 in molten aluminum 1, and thereafter continuously drawing up the resulting hot-dip aluminum-coated steel wire 3 from the molten aluminum 1.
  • the steel material which constitutes the steel wire 2 includes, for example, stainless steel, mild steel and the like, and the present invention is not limited only to those exemplified ones.
  • the stainless steel is an alloy steel containing 10 % by mass or more of chromium (Cr).
  • the stainless steel includes, for example, austenitic stainless steel, ferritic stainless steel and martensitic stainless steel, which are specified in JIS G4309, and the like, and the present invention is not limited only to those exemplified ones.
  • the stainless steel include a stainless steel in which an austenite phase is quasi-stable, such as SUS301 and SUS 304; stable austenite stainless steel such as SUS305, SUS310 and SUS316; ferritic stainless steel such as SUS405, SUS410L, SUS429, SUS430, SUS434, SUS436, SUS444 and SUS447; martensitic stainless steel such as SUS403, SUS410, SUS416, SUS420, SUS431 and SUS440; chromium-nickel-manganese-based stainless steel classified into SUS200 series; and the like.
  • the present invention is not limited only to those exemplified ones.
  • the mild steel includes steel materials specified in the steel wire of JIS G3532, steel materials specified in the standard of the soft steel wire material of JIS G3505 and the like, and the present invention is not limited only to those exemplified ones.
  • the stainless steel is preferable from the viewpoint of enhancement of tensile strength of the hot-dip aluminum-coated steel wire 3.
  • the diameter of the steel wire 2 before wire-drawing is not particularly limited. It is preferred that the diameter is appropriately adjusted in accordance with uses of the hot-dip aluminum-coated stainless steel wire 3.
  • the diameter of the steel wire 2 before wire-drawing is usually 0.2 to 0.4 mm or so.
  • the steel wire 2 is fed out from a delivery device 4 of the steel wire 2, continuously conveyed in the direction of an arrow A, and dipped in molten aluminum 1 of a plating bath 5.
  • the steel wire 2 dipped in the molten aluminum 1 is drawn up from a surface 6 of the molten aluminum 1, and thereby the hot-dip aluminum-coated steel wire 3 in which the molten aluminum 1 is deposited to the surface of the steel wire 2 is obtained.
  • the hot-dip aluminum-coated steel wire 3 Since a plating film (plating layer) of the molten aluminum 1 has been formed on the surface of the hot-dip aluminum-coated steel wire 3, the hot-dip aluminum-coated steel wire 3 is excellent in adhesion to an aluminum wire, and also excellent in tensile strength and temporal stability of electric resistance.
  • pure aluminum can be used.
  • other elements can be contained in the molten aluminum 1 as occasion demands within a scope which would not hinder an object of the present invention.
  • the above-mentioned other elements include, for example, nickel, chromium, zinc, silicon, copper, iron and the like, and the present invention is not limited only to those exemplified ones.
  • these elements are contained in aluminum, mechanical strength of the plating film can be increased, and tensile strength of the hot-dip aluminum-coated steel wire 3 can be increased.
  • silicon is preferable from the viewpoint of inhibition of generation of an iron-aluminum alloy layer which imparts brittleness to a boundary between iron contained in the steel wire and aluminum contained in the plating film, which differs depending on the kind of the steel wire, increase in mechanical strength of the plating film, and efficient plating of the steel wire 2 by lowering of the melting point of the molten aluminum 1.
  • the lower limit of the content of the other elements in the plating film is 0 % by weight.
  • the lower limit is preferably 0.3 % by mass or more, more preferably 0.5 % by mass or more, furthermore preferably 1 % by mass or more, from the viewpoint of sufficient expression of properties of the other elements.
  • the upper limit is preferably 50 % by mass or less, more preferably 20 % by mass or less, and furthermore preferably 15 % by mass or less, from the viewpoint of suppression of potential difference corrosion which is caused by contacting the other elements with an aluminum wire used in production of a twisted wire.
  • the molten aluminum 1 may inevitably contain elements such as Fe, Cr, Ni, Zn and Cu.
  • the steel wire 2 When the steel wire 2 is drawn up from the molten aluminum 1, it is preferred that the steel wire 2 is contacted with a stabilization member 7 at the boundary between the steel wire 2 and the surface 6 of the molten aluminum 1 as shown in Fig. 2 .
  • the stabilizing member 7 includes, for example, a square bar made of stainless steel, the surface of which is wounded by a heat-resistant cloth, and the like. It is preferred that a new surface (surface having not yet been contacted) of the heat-resistant cloth wounded around the stabilizing member 7 is contacted with the steel wire 2 from the viewpoint of suppression of adhesion of a lump of molten aluminum to the surface of the hot-dip aluminum-coated steel wire 3.
  • the new surface (surface having not yet been contacted) of the heat-resistant cloth wounded around the stabilizing member 7 can be formed by, for example, using the stabilizing member 7 on which the heat-resistant cloth has been previously wounded, and sequentially winding the heat-resistant cloth when the steel wire 2 is drawn up while bringing the stabilizing member 7 into contact with the steel wire 2.
  • the stabilization member 7 is simultaneously contacted with both of the surface 6 of the molten aluminum 1 and the steel wire 2.
  • the stabilization member 7 is simultaneously contacted with both of the surface 6 of the molten aluminum 1 and the steel wire 2
  • pulsation of the surface 6 of the molten aluminum 1 is suppressed, and minute vibration of the steel wire 2 is suppressed when the steel wire 2 is drawn up under the condition that the steel wire 2 is contacted with the stabilization member 7.
  • the plating film of the molten aluminum 1 can be uniformly formed on the surface of the steel wire 2.
  • the stabilization member 7 can be lightly pressed to the steel wire 2 in order to apply tension to the steel wire 2 as occasion demands from the viewpoint of suppression of minute vibration of the steel wire 2.
  • a nozzle 8 for spraying an inert gas toward a boundary between the steel wire 2 and the surface 6 of the molten aluminum 1 is provided.
  • the inert gas can be supplied, for example, from a device 9 for supplying an inert gas through a pipe 10 to the nozzle 8.
  • the device 9 for supplying an inert gas or the pipe 10 can be provided with a flow rate control device (not shown in the figure) such as a valve in order to control a flow rate of the inert gas.
  • a distance from the steel wire to a tip 8a of the nozzle 8 (shortest distance) and a temperature of the inert gas which is discharged from the tip 8a of the nozzle 8 are appropriately controlled, and an inner diameter of the tip 8a of the nozzle 8 and a volume flow rate of the inert gas which is discharged from the nozzle 8 are appropriately controlled, so that the hot-dip aluminum-coated steel wire 3 having an even diameter, on the surface of which the lump of molten aluminum is hardly deposited can be efficiently produced.
  • the inner diameter of the tip 8a of the nozzle 8 is preferably 1 mm or more, more preferably 2 mm or more, from the viewpoint of efficient production of the hot-dip aluminum-coated steel wire 3 by exactly spraying the inert gas which is discharged from the tip 8a of the nozzle 8 to the boundary between the steel wire 2 and the surface 6 of the molten aluminum 1.
  • the inner diameter is preferably 15 mm or less, more preferably 10 mm or less, and still more preferably 5 mm or less, from the viewpoint of production of the hot-dip aluminum-coated steel wire 3 having an even diameter, on the surface of which the lump of molten aluminum is hardly deposited.
  • the distance from the steel wire 2 to the tip 8a of the nozzle 8 is preferably 1 mm or more from viewpoint of avoidance of contact of the tip 8a with the steel wire 2, and efficient production of the hot-dip aluminum-coated steel wire 3.
  • the shortest distance is preferably 50 mm or less, more preferably 40 mm or less, still more preferably 30 mm or less, and still furthermore preferably 10 mm or less, from the viewpoint of production of the hot-dip aluminum-coated steel wire 3 having an even diameter, on the surface of which the lump of molten aluminum is hardly deposited.
  • the inert gas means a gas which is inert to the molten aluminum.
  • the inert gas includes, for example, nitrogen gas, argon gas, helium gas and the like, and the present invention is not limited only to those exemplified ones.
  • nitrogen gas is preferable.
  • the inert gas may include, for example, oxygen gas, carbon dioxide gas or the like within a scope which would not hinder an object according to the present invention.
  • the volume flow rate of the inert gas which is discharged from the tip 8a of the nozzle 8 is preferably 2 L (liter)/min or more, more preferably 5 L/min or more, and furthermore preferably 10 L/min or more, from the viewpoint of production of the hot-dip aluminum-coated steel wire 3 having an even diameter, on the surface of which the lump of molten aluminum is hardly deposited.
  • the volume flow rate is 200 L/min or less, more preferably 150 L/min or less, and furthermore preferably 100 L/min or less, from the viewpoint of suppression of deposition of the lump of molten aluminum to the surface of the molten aluminum plating steel wire 3 due to scattering of the molten aluminum 1.
  • the temperature of the inert gas which is discharged from the tip 8a of the nozzle 8 is preferably 200°C or higher, more preferably 300°C or higher, and still more preferably 400°C or higher, from the viewpoint of production of the hot-dip aluminum-coated steel wire 3 having an even diameter, on the surface of which the lump of molten aluminum is hardly deposited.
  • the temperature of the inert gas is preferably 800°C or lower, more preferably 780°C or lower, and still more preferably 750°C or less, since thermal efficiency comes to be lowered when the temperature of the inert gas is excessively high.
  • the temperature of the inert gas which is discharged from the tip 8a of the nozzle 8 is a temperature as determined by inserting a thermocouple for determining a temperature into the inert gas at a place where the inert gas is discharged from the tip 8a of the nozzle 8.
  • the drawing up rate of the hot-dip aluminum-coated steel wire 3 is not particularly limited when the hot-dip aluminum-coated steel wire 3 is drawn up from the surface 6 of the molten aluminum 1.
  • the average thickness of the molten aluminum plating film existing on the surface of the hot-dip aluminum-coated steel wire 3 can be controlled by appropriately adjusting the drawing up rate. It is is therefore preferred that the drawing up rate is appropriately controlled in accordance with the average thickness of the molten aluminum plating film.
  • a cooling device 11 can be provided as occasion demands as shown in Fig. 1 , in order to efficiently solidify an aluminum plating film formed on the surface of the hot-dip aluminum-coated steel wire 3 by cooling the hot-dip aluminum-coated steel wire 3 in the course of drawing up of the hot-dip aluminum-coated steel wire 3.
  • the hot-dip aluminum-coated steel wire 3 can be cooled by spraying, for example, gas, liquid mist or the like to the hot-dip aluminum-coated steel wire 3.
  • the hot-dip aluminum-coated steel wire 3 thus produced can be collected, for example, by means of a winding device 12 or the like.
  • the average thickness of the molten aluminum plating film existing on the surface of the hot-dip aluminum-coated steel wire 3 is 5 to 10 ⁇ m or so from the viewpoint of suppression of exposure of the steel wire 2 used as a substrate to the outside in a twisting process, a caulking process and the like, and increase in mechanical strength per unit wire diameter.
  • a plating layer can be formed as an intermediate layer between the steel wire 2 of the hot-dip aluminum-coated steel wire 3 and the molten aluminum plating film.
  • the metal for constituting the plating layer includes, for example, zinc, nickel, chromium, an alloy thereof and the like, and the present invention is not limited only to those exemplified ones.
  • the molten aluminum plating film can be formed of only one layer, or plural plating films made of the same or different metals.
  • the hot-dip aluminum-coated steel wire 3 obtained in the above can be conducted to wire-drawing by using, for example, a die so that a wire diameter thereof is 0.1 to 0.4 mm.
  • the elongation at break of the hot-dip aluminum-coated steel wire 3 is 5% or more, preferably 10% or more, more preferably 15% or more, from the viewpoint of improvement in twisting property of the hot-dip aluminum-coated steel wire 3 after wire-drawing.
  • the elongation at break is 30% or less from the viewpoint of improvement in twisting property of the hot-dip aluminum-coated steel wire 3 after wire-drawing.
  • the elongation at break of the hot-dip aluminum-coated steel wire 3 is a value as determined based on "Metallic materials-Tensile testing-Method of test at room temperature" defined in JIS Z2241 by controlling an original gauge length to 100 ⁇ 1 mm, controlling a distance between grips to 150 mm, and using 9A test piece as described in the column of "Types of a linear or rod-shaped test piece used in a wire or a rod having a diameter or side length of 4 mm or less" of Appendix C of JIS Z2241.
  • a plating layer is removed from the hot-dip aluminum-coated steel wire to give a steel wire, and an average diameter and the minimum diameter of the steel wire per 100 mm in length of the steel wire are determined.
  • a method for removing the plating layer from the hot-dip aluminum-coated steel wire after wire-drawing is not particularly limited.
  • the plating layer can be removed from the hot-dip aluminum-coated steel wire, for example, by dipping the hot-dip aluminum-coated steel wire in 5 to 10% hydrochloric acid having a liquid temperature of room temperature for 10 minutes.
  • the present inventors have examined elongation of the hot-dip aluminum-coated stainless steel wire after wire-drawing, and influence of variation in the deposited amount of the plating layer on twisting property as to the aluminum-plated stainless steel wire by measuring a wire diameter of the aluminum-plated stainless steel wire after molten aluminum plating, determining the variation of the deposited amount of the plating layer, carrying out wire-drawing of the aluminum-plated stainless steel wire, carrying out a tensile test of the aluminum-plated stainless steel wire to determine an elongation of the aluminum-plated stainless steel wire, and thereafter carrying out a twisting test.
  • the twisting property of the hot-dip aluminum-coated stainless steel wire has been found to be generally as follows:
  • the minimum diameter of the stainless steel wire of the hot-dip aluminum-coated stainless steel wire is equal to the average diameter of the stainless steel wire. In this case, since the whole of the hot-dip aluminum-coated stainless steel wire is uniformly twisted when the hot-dip aluminum-coated stainless steel wire is twisted, the twisting number becomes maximum.
  • the hot-dip aluminum-coated stainless steel wire when the hot-dip aluminum-coated stainless steel wire is produced, it is difficult to control the thickness of the plating layer so as to be completely uniform.
  • the hot-dip aluminum-coated stainless steel wire having a uniform outer diameter is produced by carrying out wire-drawing of a hot-dip aluminum-coated stainless steel wire having an uneven thickness of a plating layer, since an area ratio of the stainless steel to the plating layer after wire-drawing is unchanged from the area ratio of the stainless steel to the plating layer before wire-drawing, the area at the section of the stainless steel wire after wire-drawing relatively becomes smaller than the area at the section of the stainless steel wire before wire-drawing. Accordingly, the wire diameter of the hot-dip aluminum-coated stainless steel becomes relatively smaller in a region where the plating layer of the hot-dip aluminum-coated stainless steel has a larger thickness.
  • the resulting twisted hot-dip aluminum-coated stainless steel wire comes to be broken at a place where the wire diameter of the stainless steel wire is smallest in the twisted hot-dip aluminum-coated stainless steel wire.
  • the place where the wire diameter of the hot-dip aluminum-coated stainless steel wire is smallest is a place where the thickness of the plating layer is largest. Since the plating layer is formed of aluminum, and the strength of the aluminum is lower than that of the stainless steel, the plating layer hardly contributes to improvement in twisting property.
  • the present inventors have presumed the twisting number necessary for twisting the hot-dip aluminum-coated stainless steel wire from conditions for twisting the hot-dip aluminum-coated stainless steel wire.
  • a standard twisting pitch of the twisted hot-dip aluminum-coated stainless steel wire is to be 20 to 40 times of the wire diameter of the hot-dip aluminum-coated stainless steel wire. In other words, one twist is applied to the hot-dip aluminum-coated stainless steel wire by this pitch. It is considered that it is no problem in practical use that the hot-dip aluminum-coated stainless steel wire is not broken when a twist of one rotation is applied to the hot-dip aluminum-coated stainless steel wire at a pitch of 10 times of the wire diameter of the hot-dip aluminum-coated stainless steel wire, in order to prevent the hot-dip aluminum-coated stainless steel wire from break when the hot-dip aluminum-coated stainless steel wire is twisted, and this standard is considered to satisfy acceptance standard.
  • the hot-dip aluminum-coated stainless steel wire when the wire diameter of the hot-dip aluminum-coated stainless steel wire is 0.2 mm, in case the steel wire of the hot-dip aluminum-coated stainless steel wire is not broken after twisting of 50 times or more per 100 mm of the hot-dip aluminum-coated stainless steel wire in length, the hot-dip aluminum-coated stainless steel wire satisfies acceptance standard.
  • the wire diameter of the hot-dip aluminum-coated stainless steel wire is 0.32 mm, in case the steel wire of the hot-dip aluminum-coated stainless steel wire is not broken after twisting of 32 times or more per 100 mm of the hot-dip aluminum-coated stainless steel wire in length, the hot-dip aluminum-coated stainless steel wire satisfies acceptance standard.
  • the hot-dip aluminum-coated steel wire is recognized to be excellent in twisting property.
  • the hot-dip aluminum-coated steel wire according to the present invention can be suitably used, for example, in a wire harness of an automobile and the like.
  • Ahot-dip aluminum-coated steel wire was produced in accordance with the embodiments as shown in Fig. 1 .
  • a stainless steel wire made of SUS 304 having a wire diameter before plating as shown in Table 1 and elongation at break as shown in Table 1 was used.
  • the stainless steel wire was preheated in nitrogen gas, and thereafter the stainless steel wire was passed through molten aluminum, and drawn up vertically from the surface of the molten aluminum.
  • a heat-resistant cloth was contacted with a meniscus formed around the steel wire at the place where the stainless steel wire was drawn up from the surface of the molten aluminum, and a heated nitrogen gas was sprayed to the contacting part of the heat-resistant cloth, to stabilize a deposited amount of plating.
  • a passing rate of the stainless steel wire was controlled to 300 m/min.
  • the wire diameter of the hot-dip aluminum-coated steel wire thus obtained was determined.
  • the wire diameter of the hot-dip aluminum-coated steel wire was determined by using an optical outer diameter measuring instrument manufactured by KEYENCE CORPORATION under the product number of LS-7000, and measuring a wire diameter of the hot-dip aluminum-coated steel wire ten times from the sectional two directions at right angles of the diameter of the steel wire at an interval of 0.08 mm in a length direction. The average of the wire diameters was calculated and regarded as a wire diameter.
  • the wire diameter of the hot-dip aluminum-coated steel wire was shown in the column of "wire diameter after plating" of Table 1.
  • the hot-dip aluminum-coated steel wire was passed through a die to carry out wire-drawing of the hot-dip aluminum-coated steel wire so that the hot-dip aluminum-coated steel wire had a wire diameter shown in the column of "wire diameter after elongation" of Table 1.
  • a piece (length: 100 mm) was cut out from the wire-drawn hot-dip aluminum-coated steel wire, and dipped in 10% hydrochloric acid having a liquid temperature of room temperature for 10 minutes to remove the plating layer from the piece in order to take out a stainless steel wire from the piece.
  • the wire diameter of the stainless steel wire was determined in the same manner as described above. The results are shown in the column of "wire diameter of steel wire after wire-drawing" of Table 1.
  • a twisting test of the hot-dip aluminum-coated steel wire obtained in the above was performed by using an apparatus for evaluating the twisting property of a hot-dip aluminum-coated steel wire shown in Fig. 3.
  • Fig. 3 is a schematic explanatory view showing an apparatus for evaluating the twisting property of a hot-dip aluminum-coated steel wire.
  • a test wire 13 of the apparatus for evaluating the twisting property was grasped by chucks 14a and 14b, and a distance between the chuck 14a and the chuck 14b was set to 100 mm.
  • a load was applied to the test wire 13 by using a weight 17 (mass: 50 g) which was fixed to a truck 16 on a test table 15 so that the test wire 13 was not bent.
  • the chuck 14b was rotated in the direction of an arrow B, and the number of rotations was counted with an integer. The number of rotations was regarded as the twisting number.
  • the results of the twisting number are listed in the column of "twisting number" of Table 1.
  • the hot-dip aluminum-coated steel wire obtained in each working example and each comparative example was evaluated by confirming whether or not the above-mentioned formula (I) was satisfied.
  • the mark " ⁇ " was described in the column “discriminant” of "twisting property” of Table 1.
  • the mark " ⁇ " was described in the column “discriminant” of "twisting property” of Table 1.
  • the hot-dip aluminum-coated steel wire obtained by the method for producing a hot-dip aluminum-coated steel wire according to the present invention can be suitably used, for example, in a wire harness of an automobile and the like.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
EP17916828.1A 2017-07-05 2017-07-05 Fil d'acier plaqué d'aluminium fondu Withdrawn EP3650572A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/024567 WO2019008691A1 (fr) 2017-07-05 2017-07-05 Fil d'acier plaqué d'aluminium fondu

Publications (2)

Publication Number Publication Date
EP3650572A1 true EP3650572A1 (fr) 2020-05-13
EP3650572A4 EP3650572A4 (fr) 2020-12-30

Family

ID=64949831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17916828.1A Withdrawn EP3650572A4 (fr) 2017-07-05 2017-07-05 Fil d'acier plaqué d'aluminium fondu

Country Status (3)

Country Link
EP (1) EP3650572A4 (fr)
CN (1) CN110997965A (fr)
WO (1) WO2019008691A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006339040A (ja) * 2005-06-02 2006-12-14 Nisshin Steel Co Ltd 複合電線
JP5467789B2 (ja) * 2009-03-31 2014-04-09 日新製鋼株式会社 伸線加工性の良好なＡｌめっき鋼線およびその製造方法
CN102714073B (zh) * 2010-01-20 2014-09-03 古河电气工业株式会社 复合电线及其制造方法
JP5641756B2 (ja) * 2010-03-30 2014-12-17 日新製鋼株式会社 Ａｌめっき鋼線の製造法
JP6091280B2 (ja) * 2012-07-26 2017-03-08 日新製鋼株式会社 Ａｌめっき鋼線製造装置および製造法
JP6198220B2 (ja) 2013-03-22 2017-09-20 日新製鋼株式会社 溶融Ａｌめっき鋼線並びに撚り線およびその製造方法
JP6265757B2 (ja) * 2014-01-24 2018-01-24 日新製鋼株式会社 Ａｌめっき鋼線製造装置および製造法
JP2015193877A (ja) * 2014-03-31 2015-11-05 日新製鋼株式会社 伸線加工性に優れた溶融めっき鋼線およびその製造方法並びに製造装置
CN103985481B (zh) * 2014-05-14 2016-08-24 黄山创想科技股份有限公司 一种稀土锌铝合金镀层钢绞线及其制备方法
CN106661711B (zh) * 2014-07-03 2019-04-05 日新制钢株式会社 热浸镀Al钢线以及绞线及其制造方法
CN104217820B (zh) * 2014-09-10 2017-03-29 河北富明预应力钢绞线有限公司 一种高碳钢钢绞线的生产及深加工工艺

Also Published As

Publication number Publication date
CN110997965A (zh) 2020-04-10
WO2019008691A1 (fr) 2019-01-10
EP3650572A4 (fr) 2020-12-30

Similar Documents

Publication Publication Date Title
KR102149654B1 (ko) 용융 Al 도금 강선 및 연선 및 이의 제조 방법
JP6193208B2 (ja) 溶融アルミニウムめっき鋼線の製造方法
JP6198220B2 (ja) 溶融Ａｌめっき鋼線並びに撚り線およびその製造方法
EP3086326A1 (fr) Fil torsade composite
EP3162909A1 (fr) Ruban d'alliage amorphe à base de nickel pour brasage et objet en acier inoxydable assemblé utilisant ce dernier
JP2015193877A (ja) 伸線加工性に優れた溶融めっき鋼線およびその製造方法並びに製造装置
EP3650572A1 (fr) Fil d'acier plaqué d'aluminium fondu
US20200224301A1 (en) Hot-dip aluminum-coated steel wire
JP6228259B2 (ja) 溶融アルミニウムめっき鋼線
JP6265757B2 (ja) Ａｌめっき鋼線製造装置および製造法
TW201907026A (zh) 熔融鋁鍍鋼線
JP6746349B2 (ja) 溶融アルミニウムめっき鋼線およびその製造方法
JPH07106412B2 (ja) 高導電率銅被覆鋼トロリ線の製造方法
KR20180126495A (ko) 용융 알루미늄 도금 강선의 제조 방법
KR20180126499A (ko) 용융 알루미늄 도금 강선의 제조 방법
KR20180123048A (ko) 용융 알루미늄 도금 강선의 제조 방법
JP6880943B2 (ja) 溶融アルミニウムめっき鋼線の製造方法
JP4885062B2 (ja) 拡散接合部材及びその製造方法
KR20180118765A (ko) 용융 알루미늄 도금 강선의 제조 방법
JP2018172791A (ja) 溶融アルミニウムめっき鋼線の製造方法
TW201602358A (zh) 熔融鋁鍍覆鋼線與絞線以及其製造方法
JP2018172773A (ja) 溶融アルミニウムめっき鋼線の製造方法
WO2023064450A1 (fr) Fil de soudage à haute teneur en alliage avec revêtement à base de cuivre
JP2018172769A (ja) 溶融アルミニウムめっき鋼線の製造方法
WO2011105339A1 (fr) Fil métallique de base pour fil de scie revêtu

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

Free format text: ORIGINAL CODE: 0009012

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200203

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NIPPON STEEL CORPORATION

A4 Supplementary search report drawn up and despatched

Effective date: 20201127

RIC1 Information provided on ipc code assigned before grant

Ipc: C23C 2/26 20060101ALI20201123BHEP

Ipc: C23C 2/38 20060101ALI20201123BHEP

Ipc: C23C 2/12 20060101AFI20201123BHEP

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

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

18D Application deemed to be withdrawn

Effective date: 20210626