JPH055169A - Production of hot-dip coated wire - Google Patents

Abstract

PURPOSE:To apply hot-dip coating on a wire to be coated having clean surface and to manufacture high quality of the hot-dip coated wire without exposing wire surface by making hot-dip coating pre-treating process from wire drawing process for the wire to be coated into the constitution having no stickness of particularly, iron content, on surface of the wire to be coated. CONSTITUTION:The wire drawing is executed to the base-wire A to be coated by using a wire drawing machine 10 consisted of wear resistant material developing no iron rust on surface in the wire drawing process in a water soluble lubricant. The obtd. wire 1 to be coated is wound to a winding frame 2 composed of material having no iron rust on the surface and stored. The stored wire 1 to be coated is introduced into a steam atmospheric heating furnace 3 to execute steam cleaning on the wire surface and annealing. Successively, this is introduced into an ultrasonic cleaning bath 5 and after cleaning, this is dried with an air wiper 6a. Successively, this is introduced into a reducing gas atmospheric heating furnace 7 and at the same time of removing oxide layer on the surface of wire 1 to be coated, this is directly introduced into the hot dipping bath 8 under pre-heated condition to apply the hot-dip coating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a hot-dip galvanized wire used as a lead wire of an electronic component or a conductor of an electronic wiring material, for example, a hot-dip tinned wire or a hot-soldered wire.

[0002]

2. Description of the Related Art A conventional method for producing a hot-dip wire will be described with reference to FIG. The bus bar A to be plated is a corrugated roll,
A wire drawing machine (not shown), which is made of iron for the majority of the surface of the wire drawing path of pulleys, capstans, etc., is usually used to draw wires in a water-soluble lubricant or oil-based lubricant. The wire to be plated 1'having a required size is wound around a winding frame 2'made of an iron material. The wire to be plated 1 ′ once stored in the winding frame 2 ′ is derived from the winding frame 2 ′ in the next step and annealed while traveling in the steam annealing furnace 3 ′, and subsequently, a washing bath 5 ′.
After traveling through the inside to cool the wire, the water adhering to the wire surface is dried by the dryer 6, then passed through the acid flux bath 11 and the surface of the wire 1'to be plated is pickled. ,
The wire 1 ′ to be plated is introduced into the molten metal plating bath 8 with an acid flux adhered to the surface thereof, and the surface of the wire 1 ′ to be plated is washed by touching the molten metal in the molten plating bath 8. At the same time, the wire to be plated 1'is plated, and then passed through a drawing die d to adjust the required plating thickness to obtain a hot-dipped wire 1'a.

[0003]

In general, iron materials have been widely used for corrugated rolls, pulleys, capstans, etc., which correspond to the wire drawing path of a wire drawing machine. Therefore, some iron powder of these iron materials adhered to the surface of the wire 1'to be plated in the drawing process, and was wound around the reel 2'with the iron powder adhered. Still further, an iron reel is used for the reel 2'for winding and storing the plated wire 1 '. As described above, the wire to be plated 1 ′ was in a state of being in contact with the iron material in the wire drawing step and further in the winding frame which stores the wire to be plated for a long time. In particular, since the wire to be plated 1'is always in contact with the iron material on the body surface and the inner brim surface of the iron reel 2'during storage in the iron reel 2 ', from this contact surface, iron rust or the like is removed. It was unavoidable that iron oxide adhered to the surface of the plated wire 1 '. Moreover, the iron oxide thus attached to the surface of the wire to be plated 1'has a very bad influence on the quality of the plated wire in the subsequent hot dipping process. That is, the iron oxide adhered to the surface of the wire 1'to be plated is transformed into iron hydroxide while running in the steam annealing furnace 3'in the pretreatment process of plating, and the hydroxide of the surface of the wire 1'to be plated is hydroxylated. When the wire to be plated 1'is introduced into the molten metal plating bath 8, iron is decomposed by the heat of the plating bath to generate water, and this water is immediately vaporized and diffused from the surface of the wire to be plated 1 '. The surface of the plated wire 1'on which the iron hydroxide had been adhered remained as it was without hot-dip plating, which caused a so-called core wire exposure problem.

Further, since the acid flux bath 11 is used as a pretreatment process for plating, the acid in the bath is scattered,
There is a problem that the acid flux adhering to the wire to be plated 1'evaporates in the hot metal plating bath 8 to pollute and deteriorate the surrounding equipment and contaminate the working environment. Further, since the acid flux reacts with the hot-dip galvanized metal to generate a metal salt, there is a problem that the hot-dip galvanizing bath is impure and the plating quality is deteriorated.

The present invention has been made to solve the above problems of the conventional method for producing a hot-dip galvanized wire, and it is possible to obtain a high-quality hot-dip galvanized wire without exposing the core wire skin of the wire to be plated. An object of the present invention is to provide a method for producing a hot-dip galvanized wire.

[0006]

In order to achieve the above object, the present invention provides a wire drawing machine 10 made of an abrasion resistant material that does not cause iron rust on the surface of a wire drawing path through which a wire drawing material comes into contact. A wire drawing step of drawing a bus bar A to be plated in a water-soluble lubricant; and at least the surface of the drawn wire 1 in contact with the plated wire 1 is free from iron rust A winding and storing step of winding and storing on a winding frame 2 made of a material; and, the wire to be plated 1 wound and stored on the winding frame 2 is run in a heating furnace 3 in a steam atmosphere, and in the wire drawing step. A steam heating step of simultaneously performing steam cleaning for making the water-soluble lubricant adhering to the surface of the wire to be plated 1 easy to separate and annealing of the wire to be plated 1, and a cleaning liquid for the wire to be plated 1 after the steam heating step. Ultrasonic wave cleaning bath 5 is used to clean the wire surface. A cleaning step, a drying step of forcibly removing water on the surface of the wire to be plated 1 using an air wiper 6a, etc. and a drying step, and the wire to be plated 1 after the drying step is heated in a reducing gas atmosphere heating furnace 7 ( (Hereinafter abbreviated as gas reduction furnace 7), and heating with a reducing gas for preheating the wire 1 to be plated at the same time as removing the oxide layer on the surface of the wire 1 to be plated and accelerating the reaction with the hot-dip metal. And a hot dipping process for directly performing hot dip metal plating on the wire to be plated 1 in direct contact with the reducing gas heating step.

Further, according to the present invention, the wire drawing machine 10 in which the surface of the wire drawing path through which the wire drawing material comes into contact is made of a wear-resistant material that does not generate iron rust is used.
A wire drawing step of applying wire drawing to the wire; and the wire to be plated 1 that has been wire drawn is run in a heating furnace 3 in a steam atmosphere,
In the wire drawing step, a steam heating step of simultaneously performing steam cleaning for making the water-soluble lubricant adhering to the surface of the wire to be plated 1 easy to separate and annealing of the wire 1 to be plated, and a step after the steam heating step A cleaning step in which the wire to be plated 1 is passed through an ultrasonic cleaning bath 5 using a cleaning liquid 4 to clean the surface of the wire, and moisture on the surface of the wire to be plated 1 is removed by an air wiper 6a.
And the like, and the wire to be plated 1 after the drying step is run in the gas reduction furnace 7 to remove the oxide layer on the surface of the wire to be plated 1 and the wire to be plated at the same time. A pretreatment process comprising a preheating step 1 and a reducing gas heating step for promoting a reaction with the hot-dip plated metal;
And a hot dip galvanizing step for directly performing hot dip metal plating on the wire to be plated 1 in direct connection with the reducing gas heating step, and performing the wire drawing step, the pre-plating step, and the hot dip step continuously. It is in the method of manufacturing the plated wire.

The present invention is also a method for producing a hot-dip galvanized wire, which is made of a material that does not cause iron rust on the surface of the path through which the wire 1 to be plated comes into contact in the pre-plating treatment step.
Further, the thickness of the molten metal plating on the outer periphery of the wire to be plated 1 in the hot dip plating step is adjusted by a drawing die d, or the surface of the molten metal plating bath 8 from which the wire to be plated 1 is drawn is not contacted. A gas chamber 9 having an oxidizing gas or reducing gas atmosphere is provided, and the wire 1 to be plated is vertically led out from the surface of the molten metal plating bath 8 into the gas chamber 9 having the non-oxidizing gas or reducing gas atmosphere. The method for producing a hot-dip wire is carried out by

[0009]

Function: The bus bar A to be plated is drawn on the surface of the wire drawing path through which the bus bar A to be plated comes into contact by using the wire drawing machine 10 made of a wear resistant material that does not generate iron rust. Iron powder does not adhere to the surface of the plated wire 1 in the processing step. Furthermore, in the winding and storing step, at least the surface of the wire to be plated 1 in contact with the wire to be plated 1 is wound up and stored in the winding frame 2 made of a material that does not cause iron rust. Even when it is stored for a long period of time, it is not affected by iron oxide such as iron rust from the reel.

Therefore, not only when the wire drawing step, the plating pretreatment step and the hot dip plating step are continuously carried out, the wire drawing step, the winding storage step and the plating pretreatment steps after that , Even when the hot dip plating process is divided into separate processes, the wire to be plated 1 is introduced to the steam heating process of the pretreatment process for plating without iron powder and iron oxide adhered to the surface thereof. Therefore, generation of iron hydroxide on the surface of the wire is not observed even while traveling in the heating furnace 3 in a steam atmosphere, and even when the wire to be plated 1 is introduced into the molten metal plating bath 8, the conventional method is used. In addition, since the generation of water generated by the decomposition of the iron hydroxide attached to the surface of the wire to be plated 1 and the generation of gas due to the evaporation of this water are also eliminated, the problem of the exposed core wire skin of the plated wire is eliminated.

Further, in the steam heating step, the wire to be plated 1 is annealed by running in the heating furnace 3 in a steam atmosphere, and at the same time, a very small amount on the surface of the wire to be plated 1 in the wire drawing step. The adhering water-soluble lubricant becomes easy to remove by steam cleaning with heating steam, and in the next cleaning step, the cleaning liquid 4 passes through the ultrasonic cleaning bath 5, whereby the plated wire 1 Not only the water-soluble lubricant adhering to the surface of, but also other adhering impurities are completely cleaned. Further, in the drying step, the water adhering to the surface of the plated wire in the washing step is forcibly removed and dried by an air wiper or the like. Further, in the reducing gas heating step, the wire 1 to be plated runs in the gas reducing furnace 7 to reduce and remove the oxide layer on the wire surface, so that the wire surface is cleaned and the gas reducing furnace The heat applied to the wire to be plated 1 at 7 promotes the reaction between the wire to be plated 1 and the hot-dip metal, and the hot-dip wire 1a having a good plating layer is obtained.

Further, as a drawing means for adjusting the molten metal adhering to the outer periphery of the wire 1 to be plated in the hot dipping process to a required plating thickness, a drawing die d which is usually used is used.
And a solid drawing tool such as a drawing die d are used, the surface of the molten metal plating bath 8 is maintained in a non-oxidizing gas or reducing gas atmosphere, and the molten plating wire 1a is held in the molten metal plating bath 8 There is a means for adjusting the thickness of the hot-dip galvanized film by drawing it out from the surface to the non-oxidizing gas or reducing gas atmosphere in the vertical direction. When using the latter diaphragm means,
In the former case, there is no fear of variation in plating thickness or uneven thickness caused by how to select the die hole diameter of the drawing die.
The effect of the present invention is further improved.

[0013]

EXAMPLE An example of a method for manufacturing a hot-dip wire according to the present invention will be described with reference to the drawings. FIG. 1 is a process block diagram of a method for manufacturing a hot-dip galvanized wire according to the present invention. The arrow line in FIG. 1 (a) shows the manufacturing process of the first embodiment of the present invention, in which a bus bar to be plated is drawn. And a winding and storing step of the plated wire;
And a plating pretreatment step comprising a steam heating step of simultaneously performing steam cleaning and annealing, a cleaning step, a drying step, and a reducing gas heating step of simultaneously performing oxide removal and preheating;
And a hot dip plating process.

The arrow line in FIG. 1 (b) is the second line of the present invention.
And showing the manufacturing process of the third embodiment, the winding and storing step of the wire to be plated is omitted, the wire to be plated after the wire drawing step is immediately introduced into the steam heating step, and thereafter the first embodiment Go through the same steps as the example. That is, the second and third embodiments are methods of manufacturing a hot-dip wire in which the wire drawing step, the plating pretreatment step, and the hot-dip plating step are made into a tandem system. Each embodiment will be described in detail below.

First Embodiment A first embodiment will be described with reference to FIG. The wire drawing machine 10 shown in FIG. 1 (a) is made of, for example, ceramic or iron material fitted with ceramic material on the outer periphery of a corrugated roll, capstan, pulley, or the like through which the drawn material comes into contact, or ceramic is applied to the surface of the iron material. What is surface-treated with a wear-resistant material that does not generate iron rust, such as by melting, or by plating the surface of an iron material with hard chrome, is used. The bus bar A to be plated is, for example, from the copper bus bar A of 2.6 mmφ to 0.3 in a water-soluble lubricant using the wire drawing machine 10.
A copper wire 1 having a diameter of mmφ is drawn. The reel 2 in which the drawn copper wire 1 subjected to the wire drawing is wound and stored is a plastic or iron reel whose surface is coated with a synthetic resin such as epoxy resin, or an iron reel. The surface of the reel is coated with ceramics, or the surface of an iron reel is plated with nickel or chrome. Thus, the copper wire 1 to be plated is stored in a state where iron powder and iron oxide are not attached to the surface thereof.

The subsequent steps will be described with reference to FIG. The to-be-plated copper wire 1 wound up and stored on the winding frame 2 is led out from the winding frame 2 at a linear velocity of 70 m / min, runs in a tunnel type heating furnace 3 in a steam atmosphere at a set temperature of 650 ° C., and the heating furnace 3 In the inside, the water-soluble lubricant adhering to the surface of the copper wire 1 to be plated is annealed together with being vapor-cleaned so as to be easily separated. Next, the copper wire 1 to be plated is directly introduced into the ultrasonic cleaning bath 5 of the cleaning liquid 4 without being exposed to the outside air, and the water-soluble lubricant and other adhered impurities on the surface of the copper wire 1 to be plated are completely cleaned. .. As the cleaning liquid 4, for example, clean water containing no impurities was used, but pure water is more preferable. Subsequently, the air wiper 6a into which the compressed air k has been sent
Thus, the ultrasonic cleaning bath 5 removes the moisture adhering to the surface of the copper wire 1 to be plated and dries it. Next, the copper wire 1 to be plated is introduced into the gas reduction furnace 7 in a carbon monoxide gas atmosphere at a set temperature of 500 ° C., and the oxide layer on the wire surface is reduced and removed as CO ₂ gas, and at the same time the copper wire 1 to be plated 1 Is introduced into the molten tin plating bath 8 having a preset temperature of 260 ° C. in a preheated state, and the molten tin is adhered thereto, and subsequently the copper wire 1 to be plated passes through the drawing die d provided directly above the molten plating bath 8. Then, squeeze the excess molten tin adhering to the copper wire 1 to be plated, and apply about 5μ to the outer circumference of the wire.
A molten tin-plated wire 1a was produced by performing a hot-dip tin plating with a thickness of m and then introducing it into the atmosphere to cool and solidify the plating layer around the copper wire 1 to be plated. Further, after the wire drawing step in the manufacturing process of the hot dip plated wire and before the hot dip plating step, the surface of the route through which the plated copper wire 1 passes is made of a material that does not cause iron rust. As a result, the copper wire 1 to be plated was subjected to hot dip plating in a state where the attached impurities and the oxide layer were completely removed, and a good quality hot-dip tinned wire 1a with no exposed core wire skin was obtained.

Second Embodiment A second embodiment will be described with reference to FIG. In the second embodiment, the wire drawing process, the plating pretreatment process and the hot dip plating process are continuous processes and are tandemized.

The 2.6 mmφ copper wire of the bus bar A to be plated is 0.3 m by the same wire drawing machine 10 and wire drawing process as shown in the first embodiment.
The mφ coated copper wire 1 is drawn, and the drawn copper wire 1 is continuously stored in the wire drawing reel without being stored in the drawing reel.
In the subsequent steps, the molten tin-plated wire 1a was manufactured through the same steps and manufacturing conditions as those of the first embodiment. The linear velocity in the case of the second embodiment was also 70 m / min. Further, from the wire drawing step in the hot-dip wire manufacturing process of the second embodiment to the hot-dip plating step, the route surface through which the copper wire 1 to be plated passes does not generate iron rust as in the first embodiment. Composed of materials. The molten tin-plated wire 1a obtained in the second example also had a very good appearance with no visible appearance of the core wire.

Third Embodiment A third embodiment will be described with reference to FIGS. 3 and 4. Third
Similar to the second embodiment, the embodiment is a tandem process in which the wire drawing process, the plating pretreatment process and the hot dip plating process are continuous processes. In the hot-dip plating process, the hot-dip plating was performed without using a solid drawing tool such as a drawing die.

A 2.6 mmφ oxygen-free copper (OFHC) wire was used as the busbar A to be plated, and this busbar A was 0.46 mmφ by the same wire drawing machine 10 and wire drawing process as shown in the first embodiment.
The plated OFHC wire 1 is subjected to wire drawing, and then the plated OFHC wire 1 is subjected to the same manufacturing process as in the second embodiment, that is, the plated OFHC wire 1 subjected to wire drawing is formed into a wire drawing reel. It runs continuously in a tunnel-type heating furnace 3 in a steam atmosphere with a set temperature of 650 ° C without being stored, and then the plated OFHC wire 1 is directly introduced into an ultrasonic cleaning bath 5 of a cleaning liquid 4 without touching the outside air. Then, the surface of the plated OFHC wire 1 is completely cleaned of water-soluble lubricant and other attached impurities. Although clean water was used as the cleaning liquid 4, pure water may be used. Then compressed air k
Ultrasonic cleaning bath 5 by air wiper 6a
The water adhering to the surface of the plated OFHC wire 1 is removed and dried. Next, the 0FHC wire to be plated 1 runs in a gas reduction furnace 7 in a nitrogen gas atmosphere containing 10 vol% of hydrogen gas at a set temperature of 500 ° C, and the oxide layer on the wire surface is reduced and removed, and at the same time, the OFHC wire to be plated 1 Is directly introduced into the molten tin plating bath 8 shown in FIG. The to-be-plated OFHC wire 1 immersed in the hot dip plating bath 8 is drawn out from the hot plating bath 8 in the vertical direction, so that the outer circumference of the wire is hot-dip plated without using a wringer. At this time, a chamber 9 of a non-oxidizing or reducing gas atmosphere is provided in contact with the surface of the hot dip bath from which the OFHC wire 1 to be plated is led out. The to-be-plated OFHC wire 1 is led out vertically into the non-oxidizing or reducing gas chamber 9 from the surface of the hot dip plating bath 8 and, after passing through the non-oxidizing or reducing gas chamber 9, is led out to the atmosphere. Then, the plated layer was cooled and solidified to produce a molten tin-plated wire 1a having a plating thickness of 12 μm. The linear velocity in the case of the third embodiment was 30 m / min. In the case of the third embodiment which does not use a solid wringer, the plating thickness can be adjusted by controlling the linear velocity and the gas temperature of the non-oxidizing or reducing gas chamber 9.
That is, the plating thickness can be increased by increasing the linear velocity, the plating thickness can be reduced by decreasing the linear velocity, and the plating thickness can be reduced by increasing the temperature of the gas chamber.
Further, from the wire drawing step in the manufacturing process of the hot-dip wire of the third embodiment to the hot-dip plating step, the route surface through which the plated OFHC wire 1 passes does not generate iron rust as in the first embodiment. Composed of materials. The hot-dip tinned wire 1a obtained in the third example had an extremely good appearance with a uniform plating thickness with no visible appearance of the core wire.

[0021]

EFFECTS OF THE INVENTION According to the method for producing a hot-dip coated wire of the present invention, there is a possibility that iron powder and iron oxide may adhere to the surface of the wire to be plated during the wire drawing process of the wire to be plated and the step of storing the wire to be plated. Since it is completely eliminated, the iron oxides and the like adhere to the surface of the wire to be plated, and the problem of exposing the core wire skin of the plated wire, which has occurred due to the reaction of the altered iron hydroxide, is eliminated. Water-soluble lubricants, other adhering impurities that adhere to the surface of the plated wire during the drawing process, and dirt that interferes with hot-dip plating such as the oxide layer on the surface of the plated wire, steam atmosphere heating furnace, ultrasonic cleaning bath , It is removed from the surface of the wire to be plated by passing through the gas reduction furnace. As a result,
It is possible to stably manufacture a hot-dip wire having a very good appearance and good quality. Further, since it is not necessary to use an acid flux bath, there is no contamination or wear of the plating equipment and surroundings, and the working environment is improved.

[Brief description of drawings]

FIG. 1 is a process block diagram of a method for manufacturing a hot-dip wire according to the present invention.

FIG. 2 is a schematic view showing a first embodiment of the method for producing a hot-dip wire according to the present invention, wherein FIG. 2 (a) shows a wire drawing process and a winding / storing process, and FIG. The pre-plating process and the hot-dip plating process of the wire to be plated stored in the reel are shown.

FIG. 3 is a schematic view showing second and third embodiments of the method for manufacturing a hot-dip wire according to the present invention.

FIG. 4 is a schematic view showing a hot dip plating process of a third embodiment.

FIG. 5 is a schematic view showing a conventional hot-dip wire manufacturing method.

[Explanation of symbols]

 1 Wire to be plated 1a Hot-dip wire 2 Reel 3 Steam atmosphere heating furnace 4 Cleaning liquid 5 Ultrasonic cleaning bath 6a Air wiper 7 Reducing gas atmosphere heating furnace 8 Molten metal plating bath 9 Non-oxidizing or reducing gas chamber 10 Stretching Wire machine A Plated bus bar d Drawing die k Compressed air

Claims (1)

Claims: 1. A wire drawing machine in which the surface of a wire drawing path through which a wire drawing material comes in contact is made of a wear-resistant material that does not generate iron rust.
A wire drawing step for drawing a bus bar A to be plated in a water-soluble lubricant by using; and at least the surface of the wire to be plated 1 that has been drawn is in contact with the wire to be plated 1 of iron rust. A winding and storing step of winding and storing on a winding frame 2 made of a material that does not occur; and a plated wire 1 wound and stored on the winding frame 2.
Is run in the heating furnace 3 in a steam atmosphere to simultaneously separate the water-soluble lubricant adhering to the surface of the wire 1 to be separated in the wire drawing step and the annealing of the wire 1 at the same time. A steam heating step to be performed, a cleaning step of passing the wire to be plated 1 after the steam heating step through an ultrasonic cleaning bath 5 using a cleaning liquid 4 to clean the wire surface, and moisture on the surface of the wire to be plated 1 After the drying step of removing and drying, and the plated wire 1 after this drying step is run in the heating furnace 7 in a reducing gas atmosphere, the oxidized wire on the surface of the plated wire 1 is removed and the plated wire 1 is preliminarily prepared at the same time. A plating pretreatment step comprising a heating step for heating and a reducing gas heating step for promoting a reaction with the hot-dip metal; and hot-dip plating for directly applying hot-dip metal plating to the wire 1 to be plated, which is directly connected to the reducing gas heating step Process; and are provided. Method for producing a melt-plated wire. 2. A wire drawing machine 10 in which the surface of a wire drawing path through which a wire drawing material comes into contact is made of a wear resistant material that does not generate iron rust.
And a wire drawing step of performing wire drawing on the bus bar A to be plated in a water-soluble lubricant; and running the wire 1 to be plated in the heating furnace 3 in a steam atmosphere, In the wire processing step, a steam heating step of simultaneously performing steam cleaning for making the water-soluble lubricant adhering to the surface of the plated wire 1 easy to separate and annealing of the plated wire 1 and plating after the steam heating step Ultrasonic cleaning bath 5 using cleaning liquid 4
A cleaning step of passing the inside of the wire to clean the surface of the wire, a drying step of removing water on the surface of the wire to be plated 1 and drying, and the wire 1 to be plated after the drying step in a heating furnace 7 in a reducing gas atmosphere. And a reducing gas heating step for preheating the wire to be plated 1 at the same time as removing the oxide layer on the surface of the wire to be plated 1 and promoting a reaction with the hot-dip plated metal; And a hot dip plating step for directly performing hot metal plating on the wire to be plated 1 by directly connecting to the reducing gas heating step; and continuously performing the wire drawing step, plating pretreatment step and hot dip coating step. A method for producing a hot-dip galvanized wire. 3. The method of manufacturing a hot-dip galvanized wire according to claim 1, wherein the surface of the path through which the wire to be plated 1 comes into contact in the pre-plating treatment step is made of a material that does not generate iron rust. 4. The method for producing a hot-dip wire according to claim 1, wherein the thickness of the hot-dip metal plating on the outer periphery of the wire to be plated 1 in the hot-dip plating step is adjusted by a drawing die d. .. 5. The adjustment of the thickness of the molten metal plating on the outer periphery of the wire to be plated 1 in the hot dip plating step is performed by contacting the surface of the molten metal plating bath 8 from which the wire to be plated 1 is drawn out with a non-oxidizing gas or reduction. A gas chamber 9 having an atmosphere of a reactive gas is provided, and the wire 1 to be plated is vertically led out from the surface of the molten metal plating bath 8 into the gas chamber 9 having a non-oxidizing gas or reducing gas atmosphere. The method for manufacturing a hot-dip wire according to claim 1, 2 or 3, characterized in that.