WO2019008691A1 - Fil d'acier plaqué d'aluminium fondu - Google Patents

Fil d'acier plaqué d'aluminium fondu Download PDF

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Publication number
WO2019008691A1
WO2019008691A1 PCT/JP2017/024567 JP2017024567W WO2019008691A1 WO 2019008691 A1 WO2019008691 A1 WO 2019008691A1 JP 2017024567 W JP2017024567 W JP 2017024567W WO 2019008691 A1 WO2019008691 A1 WO 2019008691A1
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WIPO (PCT)
Prior art keywords
steel wire
hot
wire
dip
diameter
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PCT/JP2017/024567
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English (en)
Japanese (ja)
Inventor
鴨志田　真一
忠昭 三尾野
服部　保徳
Original Assignee
日新製鋼株式会社
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.)
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Application filed by 日新製鋼株式会社 filed Critical 日新製鋼株式会社
Priority to PCT/JP2017/024567 priority Critical patent/WO2019008691A1/fr
Priority to EP17916828.1A priority patent/EP3650572A4/fr
Priority to CN201780092743.8A priority patent/CN110997965A/zh
Priority to US16/628,531 priority patent/US20200224301A1/en
Publication of WO2019008691A1 publication Critical patent/WO2019008691A1/fr

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    • 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 molten aluminum plated steel wire. More specifically, the present invention relates to a hot-dip aluminum-plated steel wire which is excellent in twistability and can be suitably used, for example, for a wire harness of an automobile and a method of manufacturing the same.
  • hot-dip aluminum plating in a hot-dip aluminum plated steel wire indicates the type of aluminum plating.
  • the molten aluminum plated steel wire means a steel wire to which aluminum plating is applied by immersing the steel wire in a molten aluminum plating bath and subsequently pulling up the steel wire continuously from the molten aluminum plating bath.
  • twistability means a property that is less likely to be broken when the steel wire is twisted.
  • the stranded wire obtained by applying is used.
  • the molten aluminum plated steel wire constituting the stranded wire is twisted, and the molten aluminum plated steel wire is broken when the molten aluminum plated steel wire becomes large in twisting.
  • An index is required to prevent torsion failure in the hot-dip galvanized steel wire.
  • a hot-dip galvanized steel wire with improved resistance to twisting which is not subjected to wire drawing after hot-dip aluminum plating, and has a core wire of 0.05 to 0.50 mm in diameter as the core material.
  • the average diameter D A (mm) and the minimum diameter D MIN (mm) in the longitudinal direction are expressed by the equation (1): (D A ⁇ D MIN ) / D A ⁇ 0.10 (1)
  • a hot-dip aluminum-plated steel wire is proposed in which the adhesion amount of hot-dip aluminum plating is made uniform so as to satisfy the following.
  • the molten aluminum plated steel wire is required to satisfy the formula (1) in order to secure the torsion resistance such that the number of times of breaking torsion per 100 mm of the length of the molten aluminum plated steel wire is 50 times or more. (See paragraph [0022] of Patent Document 1).
  • a hard steel wire is used as the wire (see paragraph [0034] of Patent Document 1).
  • the elongation of the hard steel wire is approximately 5% or less, and when the hot-dip galvanized steel wire used as the steel wire is subjected to wire drawing, the twistability is significantly reduced, The hot-dip aluminum plated steel wire is used in a state where wire drawing is not performed (see paragraph [0023] of Patent Document 1).
  • This invention is made in view of the said prior art, and an object of this invention is to provide the molten aluminum plated steel wire which is excellent in the twistability at the time of giving a twisted wire process, and its manufacturing method.
  • the present invention (1) A hot-dip aluminum-plated steel wire having a plating layer on the surface of a steel wire having a diameter of 0.1 to 0.4 mm, wherein the elongation at break is 5 to 30%, The ratio of the average diameter per 100 mm length of the steel wire from which the plating layer is removed to the minimum diameter of the steel wire is the formula (I): [Minimum diameter / average diameter]] [1-(elongation at break (%) / 100)] (I) And a method for producing a hot-dip galvanized steel wire having a plating layer on the surface of a steel wire having a diameter of 0.1 to 0.4 mm, the method comprising the steps of: The ratio of the average diameter per 100 mm of the length of the steel wire from which the plating layer has been removed to the minimum diameter of the steel wire is the formula (I): [Minimum diameter / average diameter]] [1-(elongation at break (%) / 100)] (I)
  • the present invention relates to a
  • a hot-dip aluminum-plated steel wire excellent in twistability at the time of twisting and a method for producing the same.
  • FIG. 7 is a schematic cross-sectional view of the boundary between the steel wire and the bath surface of the hot-dip aluminum plating bath when pulling the steel wire from the hot-dip aluminum plating bath when producing the hot-dip aluminum plated steel wire of the present invention.
  • FIG. 7 is a schematic cross-sectional view of the boundary between the steel wire and the bath surface of the hot-dip aluminum plating bath when pulling the steel wire from the hot-dip aluminum plating bath when producing the hot-dip aluminum plated steel wire of the present invention.
  • FIG. 1 is a schematic explanatory view showing an embodiment of the method for producing a hot-dip galvanized steel wire of the present invention.
  • FIG. 2 is a schematic cross-sectional view of the boundary portion between the steel wire and the bath surface of the hot-dip aluminum plating bath when pulling the steel wire from the hot-dip aluminum plating bath when producing the hot-dip aluminum plated steel wire of the present invention.
  • the hot-dip aluminum plated steel wire 3 is continuously pulled up from the hot-dip aluminum plating bath 1 to manufacture the hot-dip aluminum plated steel wire 3. Can.
  • Examples of the steel material constituting the steel wire 2 include stainless steel and mild steel, but the present invention is not limited to such examples.
  • Stainless steel is an alloy steel containing 10% by mass or more of chromium (Cr).
  • Examples of stainless steel include austenitic stainless steel, ferritic stainless steel, and martensitic stainless steel specified in JIS G4309, but the present invention is limited to such examples only. is not.
  • stainless steel generally austenite phase is metastable such as SUS301, SUS304; stable austenitic stainless steel such as SUS305, SUS310, SUS316; SUS405, SUS410L, SUS429, SUS430, SUS434, Ferritic stainless steels such as SUS436, SUS444, and SUS447; Martensitic stainless steels such as SUS403, SUS410, SUS416, SUS416, SUS420, SUS431, and SUS440, and chromium-nickel-manganese stainless steels classified in the SUS200 series
  • the present invention is not limited to such examples.
  • mild steel examples include steels defined in JIS G 3532 iron wires and steels defined in JIS G 3505 mild steel wire standards, but the present invention is not limited to such examples.
  • stainless steel is preferable from the viewpoint of enhancing the tensile strength of the hot-dip galvanized steel wire 3.
  • the diameter of the steel wire 2 before wire drawing is not particularly limited, and it is preferable to appropriately adjust it according to the application of the hot-dip aluminum-plated steel wire 3.
  • the diameter of the steel wire 2 before wire drawing is usually about 0.2 to 0.4 mm.
  • a steel wire 2 is fed from a delivery device 4 of the steel wire 2, continuously conveyed in the direction of arrow A, and immersed in a molten aluminum plating bath 1 in a plating bath 5.
  • a molten aluminum plated steel wire 3 in which the molten aluminum plating bath 1 adheres to the surface of the steel wire 2 by pulling up the steel wire 2 immersed in the molten aluminum plating bath 1 vertically upward from the bath surface 6 of the molten aluminum plating bath 1 Is obtained.
  • the hot-dip aluminum plated steel wire 3 adheres to the aluminum wire. It is also excellent in the tensile strength and the temporal stability of the electrical resistance.
  • Examples of the other elements include nickel, chromium, zinc, silicon, copper, iron and the like, but the present invention is not limited to such examples.
  • the mechanical strength of the film can be enhanced, and in turn, the tensile strength of the hot-dip aluminized steel wire 3 can be enhanced.
  • the other elements depending on the type of steel wire, the formation of a brittle iron-aluminum alloy layer is suppressed between iron contained in the steel wire and aluminum contained in the coating. Silicon is preferable from the viewpoint of efficiently plating the steel wire 2 by increasing the mechanical strength of the plating film and lowering the melting point of the molten aluminum plating bath 1.
  • the lower limit value of the content of the other element in the film is 0% by mass, but from the viewpoint of sufficiently expressing the properties of the other element, the content is preferably 0.3% by mass or more, more preferably 0.
  • the content is preferably 5% by mass or more, more preferably 1% by mass or more, and from the viewpoint of suppressing potential difference corrosion due to contact with an aluminum wire used in producing a stranded wire, preferably 50% by mass or less, more preferably
  • the content is 20% by mass or less, more preferably 15% by mass or less.
  • Elements such as Fe, Cr, Ni, Zn, and Cu may be unavoidably mixed in the molten aluminum plating bath 1.
  • the steel wire 2 When pulling up the steel wire 2 from the molten aluminum plating bath 1, as shown in FIG. 2, the steel wire 2 is stabilized at the boundary between the steel wire 2 and the bath surface 6 of the molten aluminum plating bath 1. It is preferable to contact.
  • the stabilization member 7 for example, a stainless steel square bar with a heat resistant cloth wound on the surface, etc. may be mentioned.
  • the heat resistant cloth wound around the stabilization member 7 is a new surface (newly created surface) of the stabilization member 7 from the viewpoint of suppressing adhesion of the molten aluminum block to the surface of the fusion aluminum plated steel wire 3. It is preferable to contact with.
  • the new surface (newly generated surface) of the stabilization member 7 uses, for example, the stabilization member 7 in which the heat resistant cloth is previously wound, and pulls the steel wire 2 while bringing the stabilization member 7 into contact with the steel wire 2 Sometimes, it can be formed by sequentially winding the heat resistant cloth.
  • the stabilizing member 7 is preferably brought into contact with both the bath surface 6 of the hot-dip aluminum plating bath 1 and the steel wire 2 simultaneously.
  • the stabilization member 7 is simultaneously brought into contact with both the bath surface 6 of the hot-dip aluminum plating bath 1 and the steel wire 2
  • the pulsation of the bath surface 6 of the hot-dip aluminum plating bath 1 is suppressed and the steel wire
  • micro-vibrations of the steel wire 2 are suppressed, and thus the coating of the molten aluminum plating bath 1 can be uniformly formed on the surface of the steel wire 2.
  • the stabilization member 7 is made of steel in order to apply tension to the steel wire 2 as necessary from the viewpoint of suppressing micro vibration of the steel wire 2. It may be lightly pressed to the line 2.
  • a nozzle 8 for blowing an inert gas toward the boundary between the steel wire 2 and the bath surface 6 of the hot-dip aluminum plating bath 1 is provided.
  • the inert gas can be supplied, for example, from the inert gas supply device 9 to the nozzle 8 through the pipe 10.
  • a flow control device such as a valve may be provided.
  • the distance (shortest distance) from the steel wire 2 to the tip 8a of the nozzle 8 and the temperature of the inert gas discharged from the tip 8a of the nozzle 8 are appropriately controlled. Since the inner diameter and the volumetric flow rate of the inert gas discharged from the nozzle 8 are appropriately controlled, the wire diameter is uniform, and the molten aluminum-plated steel wire 3 with almost no molten aluminum block adhering to the surface is efficiently used. It can be manufactured.
  • the inside diameter of the tip of the nozzle 8 sprays the inert gas discharged from the tip 8 a of the nozzle 8 onto the boundary between the steel wire 2 and the bath surface 6 of the hot-dip aluminum plating bath 1 precisely, From the viewpoint of producing the wire 3 efficiently, it is preferably 1 mm or more, more preferably 2 mm or more, from the viewpoint of obtaining the molten aluminum plated steel wire 3 having a uniform wire diameter and hardly adhering molten aluminum lumps on the surface Preferably it is 15 mm or less, More preferably, it is 10 mm or less, More preferably, it is 5 mm or less.
  • the distance (shortest distance) from the steel wire 2 to the tip 8a of the nozzle 8 is preferably 1 mm or more from the viewpoint of efficiently producing the hot-dip aluminum plated steel wire 3 while avoiding contact with the steel wire 2
  • the diameter is 50 mm or less, more preferably 40 mm or less, still more preferably 30 mm or less, and still more preferably 10 mm or less from the viewpoint of obtaining the molten aluminum plated steel wire 3 having uniform diameter and hardly adhering molten mass to the surface. is there.
  • Inert gas means a gas that is inert to molten aluminum.
  • the inert gas include nitrogen gas, argon gas and helium gas, but the present invention is not limited to such examples.
  • nitrogen gas is preferred.
  • the inert gas may contain, for example, oxygen gas, carbon dioxide gas, and the like, as long as the object of the present invention is not impaired.
  • the volumetric flow rate of the inert gas discharged from the tip 8a of the nozzle 8 is preferably 2 L (liter) from the viewpoint of obtaining the molten aluminum plated steel wire 3 having a uniform wire diameter and hardly any molten aluminum lumps adhering to the surface.
  • / Min or more more preferably 5 L / min or more, still more preferably 10 L / min or more, from the viewpoint of suppressing adhesion of molten aluminum lumps to the surface of the molten aluminum plated steel wire 3 due to the scattering of the molten aluminum plating bath 1 Therefore, it is preferably 200 L / min or less, more preferably 150 L / min or less, and still more preferably 100 L / min or less.
  • the temperature of the inert gas discharged from the tip 8a of the nozzle 8 is preferably 200 ° C. or higher, from the viewpoint of obtaining the molten aluminum plated steel wire 3 having a uniform wire diameter and hardly any molten aluminum lumps adhering to the surface.
  • the temperature is preferably 300 ° C. or more, more preferably 400 ° C. or more, and if it is too high, the thermal efficiency is reduced, so it is preferably 800 ° C. or less, more preferably 780 ° C. or less, still more preferably 750 ° C. or less.
  • the temperature of the inert gas discharged from the tip 8a of the nozzle 8 is measured by inserting a thermocouple for temperature measurement into the inert gas at the tip 8a of the nozzle 8 discharged from the tip 8a of the nozzle 8 Is the value of
  • the pulling rate at the time of pulling up the molten aluminum plated steel wire 3 from the bath surface 6 of the molten aluminum plating bath 1 is not particularly limited, and is present on the surface of the molten aluminum plated steel wire 3 by appropriately adjusting the pulling rate. Since the average thickness of the hot-dip aluminum plating film can be adjusted, it is preferable to appropriately adjust according to the average thickness of the hot-dip aluminum plating film.
  • a cooling device 11 is disposed as necessary as shown in FIG. May be In the cooling device 11, the molten aluminum plated steel wire 3 can be cooled, for example, by spraying a gas, a liquid mist or the like on the molten aluminum plated steel wire 3.
  • the molten aluminum plated steel wire 3 manufactured as described above can be collected by, for example, the winding device 12 or the like.
  • the average thickness of the hot-dip aluminum plating film present on the surface of the hot-dip aluminum plated steel wire 3 suppresses the exposure of the steel wire 2 of the base during stranding, caulking, etc. From the viewpoint of enhancing the mechanical strength per unit area, it is preferably about 5 to 10 ⁇ m.
  • a plated layer may be formed as an intermediate layer between the steel wire 2 of the hot-dip galvanized steel wire 3 and the hot-dip aluminum plating film.
  • a metal which comprises a plating layer although zinc, nickel, chromium, these alloys etc. are mentioned, for example, this invention is not limited only to this illustration.
  • the hot-dip aluminum plating film may be formed of only one layer, or a plurality of plating films made of the same or different metals may be formed.
  • the hot-dip aluminum-plated steel wire 3 obtained above can be subjected to wire drawing using, for example, a die or the like so that the wire diameter becomes 0.1 to 0.4 mm.
  • the elongation at break of the hot-dip galvanized steel wire 3 is at least 5%, preferably at least 10%, more preferably 15 from the viewpoint of improving the twistability of the hot-dip galvanized steel wire 3 after wire drawing. From the viewpoint of improving the twistability of the hot-dip aluminum-plated steel wire 3 after wire drawing, it is 30% or less.
  • the elongation at break of the hot-dip aluminum-plated steel wire 3 after wire drawing is adjusted to the original standard point distance of 100 ⁇ 1 mm according to “Metal material tensile test method” defined in JIS Z 2241 and the distance between clamps is 150 mm Measured using the test piece No. 9A described in Appendix C “Types of linear or rod-like test pieces used for wires and bars less than 4 mm in diameter or side”. It is the value of time.
  • the average diameter per 100 mm of the length of the steel wire from which the plating layer has been removed from the hot-dip galvanized steel wire after wire drawing and the minimum diameter of the steel wire are measured.
  • the said fusion aluminum plating steel wire is immersed for about 10 minutes in 5-10% hydrochloric acid which has liquid temperature of normal temperature. By doing this, the plating layer can be removed from the hot-dip aluminum-plated steel wire.
  • the present inventors measure the wire diameter of the aluminum-plated stainless steel wire after hot-dip aluminum plating for the molten aluminum-plated stainless steel wire, check the variation in the amount of adhesion of the plating layer, and draw the aluminum-plated stainless steel wire.
  • the elongation of the aluminized stainless steel wire after wire drawing and the thickness of the plated layer are measured by performing a twisting test after measuring the elongation of the aluminized stainless steel wire subjected to processing and subjected to wire drawing processing by a tensile test. It investigated about the influence which the dispersion
  • the minimum diameter of the stainless steel wire of the hot-dip aluminum plated stainless steel wire is the same as the average diameter of the stainless steel wire.
  • the hot-dip aluminized stainless steel wire is twisted, the whole hot-dip aluminum plated stainless steel wire is uniformly twisted, so the number of times of twisting becomes maximum.
  • the wire diameter of the stainless steel wire breaks at the smallest portion. It will be.
  • the place where the wire diameter of the hot-dip aluminum plated stainless steel wire is the smallest is the place where the plating layer is the thickest, but the plating layer is made of aluminum, and the aluminum has lower strength than stainless steel. , Hardly contribute to the improvement of the tortuosity.
  • the present inventors estimated the number of times of twisting required to apply a twisting process to a hot-dip aluminum-plated stainless steel wire from the processing conditions of the twisted wire.
  • the standard twisting pitch of the stranded wire of the hot-dip aluminized stainless steel wire is 20 to 40 times the wire diameter of the hot-dip aluminized stainless steel wire. That is, a single twist is applied to this hot-dip aluminized stainless steel wire at this pitch. In order to prevent breakage due to twisting of a hot-dip aluminized stainless steel wire during twisting, the wire does not break in a state where a twist of one rotation is applied at a pitch 10 times the wire diameter of the hot-dip aluminized stainless steel wire. Because it is considered that there is no problem in practical use, it is considered to meet the passing criteria.
  • the wire diameter of the hot-dip aluminized stainless steel wire is 0.2 mm, there is no breakage of the steel wire even if 50 times or more twisting per 100 mm length of the hot-dip aluminum plated stainless steel wire is acceptable. If the wire diameter of the hot-dip aluminum plated stainless steel wire is 0.32 mm, there is no breakage of the steel wire even after twisting 32 times or more per 100 mm of the length of the hot-dip aluminum plated stainless steel wire, It will meet the passing criteria.
  • the relationship between the minimum wire diameter / average wire diameter of the stainless steel wire after removal of the plated layer of the hot-dip aluminum plated stainless steel wire after wire drawing and the elongation of the hot-dip aluminum plated stainless steel wire is the formula (I ): [Minimum diameter / average diameter]] [1-(elongation at break (%) / 100)] (I) It was found that the molten aluminum-plated stainless steel wire after wire drawing is not broken even when it is twisted at a pitch of 10 times the wire diameter of the molten aluminum-plated stainless steel wire.
  • the elongation at break is 5 to 30%, and the average diameter per 100 mm of the length of the steel wire from which the plating layer is removed from the hot-dip aluminum plated steel wire and the minimum diameter of the steel wire It is recognized that the hot-dip galvanized steel wire whose ratio satisfies the above-mentioned formula (I) is excellent in twistability.
  • the hot-dip aluminized steel wire of the present invention can be suitably used, for example, in a wire harness of an automobile.
  • Hot-dip aluminized steel wire was manufactured based on the embodiment shown in FIG.
  • a steel wire a stainless steel wire made of SUS304 having a wire diameter before plating shown in Table 1 and having an elongation at break shown in Table 1 was used.
  • After preheating the stainless steel wire in nitrogen gas wire it through a molten aluminum plating bath, pull it vertically from the bath surface, and contact the heat-resistant cloth with the meniscus formed around the steel wire at the pulling portion from the bath surface. By spraying heated nitrogen gas to the contact portion, the amount of deposition of plating was stabilized.
  • the linear velocity was 300 m / min.
  • the wire diameter of the hot-dip aluminum-plated steel wire obtained as described above was measured.
  • the diameter of the hot-dip aluminum plated steel wire is orthogonal to the diameter cross section of the steel wire at intervals of 0.08 mm in the length direction using an optical outer diameter measuring device [manufactured by KEYENCE CORPORATION, product number: LS-7000]
  • the wire diameter was measured 10 times from 2 directions, and the average value was made into the wire diameter.
  • the wire diameter of the hot-dip aluminized steel wire is described in the column of “wire diameter after plating” in Table 1.
  • the molten aluminum plated steel wire was subjected to wire drawing processing so as to have the wire diameter shown in the column of “wire diameter after wire drawing” by passing the molten aluminum plated steel wire through a die. .
  • a portion (length: 100 mm) of the hot-dip aluminum-plated steel wire subjected to wire drawing is cut off, and the hot-dip aluminum galvanized steel wire is immersed for about 10 minutes in 10% hydrochloric acid having a liquid temperature of normal temperature.
  • the stainless steel wire was taken out by removing the plating layer from the hot-dip aluminum plated steel wire, and the wire diameter of the stainless steel wire was examined in the same manner as described above. The results are shown in the column of "wire diameter of drawn steel wire" in Table 1.
  • FIG. 3 is a schematic explanatory view of a test apparatus for test of molten aluminum plated steel wire.
  • test wire 13 of the torquability test device is gripped by the chucks 14a and 14b, the distance between the chuck 14a and the chuck 14b is set to 100 mm, and fixed to the carriage 16 on the test stand 15.
  • a load by a weight 17 (mass: 50 g) was applied to prevent the test wire 13 from bending.
  • the chuck 14b is rotated in the direction of arrow B, and the number of rotations until the test wire 13 breaks is obtained as an integer value, which is taken as the number of times of twisting.
  • the measurement result was described in the column of "number of times of twisting" of Table 1.
  • the hot-dip aluminized steel wire obtained by the manufacturing method of the present invention can be suitably used, for example, for a wire harness of an automobile.

Abstract

La présente invention concerne : un fil d'acier plaqué d'aluminium fondu, présentant une couche de placage sur la surface d'un fil d'acier ayant un diamètre situé dans la plage allant de 0,1 à 0,4 mm et obtenu par tréfilage, dont l'allongement à la rupture est de 5 à 30 %, et le rapport du diamètre moyen pour 100 mm de longueur du fil d'acier, pour lequel la couche de placage a été retirée dudit fil d'acier plaqué d'aluminium fondu, au diamètre minimal dudit fil d'acier satisfait l'expression : [diamètre minimal/diamètre moyen]≥[1-(allongement à la rupture (%)/100)] ; et un procédé de production d'un fil d'acier plaqué d'aluminium fondu dans lequel un tréfilage est effectué sur ledit fil d'acier plaqué d'aluminium fondu, de sorte que le rapport du diamètre moyen pour 100 mm de longueur du fil d'acier, pour lequel la couche de placage a été retirée dudit fil d'acier plaqué d'aluminium fondu, au diamètre minimal dudit fil d'acier satisfasse l'expression susmentionnée, et que l'allongement à la rupture soit de 5 à 30 %.
PCT/JP2017/024567 2016-04-23 2017-07-05 Fil d'acier plaqué d'aluminium fondu WO2019008691A1 (fr)

Priority Applications (4)

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
EP17916828.1A EP3650572A4 (fr) 2017-07-05 2017-07-05 Fil d'acier plaqué d'aluminium fondu
CN201780092743.8A CN110997965A (zh) 2017-07-05 2017-07-05 热浸镀铝钢线
US16/628,531 US20200224301A1 (en) 2016-04-23 2017-07-05 Hot-dip aluminum-coated steel wire

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

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