KR100363023B1 - A manufacture method of electrode line for coating wire and the electrode line thereof - Google Patents

Abstract

According to the present invention, a method of manufacturing an electrode wire forms dozens of fine holes on a pipe made of carbon pipe or deoxidized copper pipe, and forms inorganic fine particles or carbon fine particles on the outer circumferential surface of the pipe, and at both ends of the pipe. By forming an inlet and an outlet for injecting and discharging the reducing gas, respectively, the far-infrared heat conduction of the inorganic fine particles or carbon fine particles is easily transmitted to the wire through the micro-holes to improve thermal efficiency, and tension during wire discharge machining. It improves the strength and processing speed, and makes it easy to control the temperature according to the quality characteristics of the wire, such as the mechanical properties of the wire, and enables heat treatment in a small space. To improve overall wire performance The present invention provides a method of manufacturing electrode wire for coating wires that improves productivity while maximizing reliability in using the same.

In addition, there is a feature to provide an electrode wire manufactured by the electrode wire manufacturing method for the coating wire.

Description

Electrode wire manufacturing method for coating wire and electrode wire {A MANUFACTURE METHOD OF ELECTRODE LINE FOR COATING WIRE AND THE ELECTRODE LINE THEREOF}

The present invention relates to an electrode wire manufacturing method for coating wire for cutting a workpiece by using an electric discharger, and an electrode wire thereof,

In more detail, in the method of manufacturing the electrode wire, dozens of fine holes are formed on a pipe made of carbon pipe or deoxidized copper pipe, inorganic fine particles or carbon fine particles are formed on the outer circumferential surface of the pipe, and both ends of the pipe are formed. By forming an inlet and an outlet for injecting and discharging the reducing gas into each of the parts, it is easy to transfer the far-infrared heat conduction of the inorganic fine particles or carbon-based fine particles to the wire through the fine holes to improve the thermal efficiency, wire discharge processing It improves tensile strength and processing speed at the time, and makes it easy to control the temperature according to the quality characteristics of the wire, such as the mechanical properties of the wire, and enables heat treatment in a small space, thereby improving the coating thickness and adhesion of the coated external fish. Reduce the occurrence of powder to improve overall wire The present invention relates to a method for manufacturing an electrode wire for a coating wire and an electrode wire for improving productivity as well as maximizing reliability in using the same.

In general, electro-discharge machining (hereinafter referred to as "EDM") refers to forming a metal object by arc heat by electric discharge, that is, when a large voltage is applied between the object and the electrode, An arc is generated and erosion occurs as it is directed to the workpiece.

Such EDM is a situation that is currently widely used as a method suitable for the processing of high hardness materials by the complex and heat treatment according to the development of the industry.

Among the EDMs, an electrode material is used in the form of a wire, called a wire-cut EDM. In particular, the wire-cut EDM is effective for narrow and complicated machining such as a tool or a die. In the way of feeding wires to the workpiece, the wires are consumable and cannot be reused after discharge.

In addition, as the discharge proceeds, heat is generated, and this heat may cause disconnection of the electrode foreign language, and in order to prevent this, the internal heat may be reduced with evaporation using an electrode material having a high vapor pressure during discharge. Brass wire alloyed with Zn) dominates, but this improves the discharge effect but is limited by the solubility limits of existing alloys. That is, the maximum amount of zinc (Zn) that can be dissolved in the α solid solution (FCC) is about 39% at 456 ° C.

As described above, the electrode wire used for wire discharge machining is mainly used for copper wire, but in the case of pure copper wire, the tensile strength is low so that the tension during discharge machining cannot be increased, so it is difficult to suppress vibration of the electrode wire, which leads to a decrease in precision as well as disconnection. It is easy and the discharge processability of copper (Cu) itself is not very good, there is a problem that the processing speed is slow.

In order to improve the processing speed of the above problem, a brass electrode wire alloyed with copper and zinc is used. That is, the higher the amount of zinc (Zn), the higher the processing speed, because the zinc improves the explosive force and efficiently removes the molten portion of the workpiece, thereby reducing the adhesion to the workpiece.

However, when the zinc content is increased in the copper (Cu) -zinc (Zn) alloy, the electric discharge machinability is improved but the drawing machinability becomes difficult. That is, when the zinc is 40% or more, it is made of acicular tissue and hard β-phase is hardly processed.

As described above, in order to improve the speed of electric discharge machining and to improve the precision of the workpiece, various elements are added to the copper-zinc alloy to improve the strength. However, the higher the content of zinc (Zn), the higher the discharge characteristics. Although it is good, in practice, a part up to several micrometers from the surface affects the discharge characteristics, and even in the same brass wire, the discharge characteristics vary depending on the manufacturing method.

Therefore, due to the above problems, the electrode wire manufacturing method according to the related art does not easily transfer thermal conductivity to the wire, thereby reducing thermal efficiency, reducing tensile strength and processing speed during wire discharge machining, as well as the mechanical properties of the wire. Depending on the characteristics of the temperature control is not easy, heat treatment is not possible in a small space due to the coating thickness of the coated foreign fish and the adhesive strength due to the powder generation is reduced, the performance of the overall wire is a problem occurs in use There is a problem that productivity is lowered because the reliability is minimized and the efficiency value is left behind.

The present invention has been made to solve the problems occurring in the related art as described above, and has the following objects.

The present invention is to easily transfer the far-infrared heat conduction of the inorganic particles or carbon-based particles through the fine holes to the wire to improve the thermal efficiency, to improve the tensile strength and processing speed during the wire discharge machining, the quality of the mechanical properties of the wire Depending on the characteristics, it is easy to control the temperature and at the same time, it is possible to heat treatment in a small space, thereby improving the overall wire performance by suppressing powder generation by improving the coating thickness and adhesion of the coated external fish. It is an object of the present invention to provide a method for producing an electrode wire for a coating wire that maximizes the reliability and improves productivity.

Still another object of the present invention is to provide an electrode wire manufactured by the electrode wire manufacturing method for a coating wire.

In order to achieve the above object, the present invention provides a method of manufacturing an electrode wire in the form of dozens of fine holes on the pipe made of carbon pipes or deoxidized copper pipe, and forming inorganic particles or carbon-based particles on the outer peripheral surface of the pipe, At both ends of the pipe, respectively, an inlet and an outlet for injecting and discharging the reducing gas are formed.

1 is a block diagram showing to show that the invention is implemented,

Figure 2 is a cross-sectional view showing for explaining the heating furnace of the present invention,

Figure 3 is a side view showing the configuration of the heating furnace of the present invention.

<Description of the symbols for the main parts of the drawings>

10: raw material input portion 11: wire 12: pipe

13: fine hole 14: inorganic fine particles 15: inlet

16 outlet 20 20 ultrasonic cleaning unit 30 first heating furnace

31 heating tube 40 hot dip plating tank 50 molten alloy portion

60: second heating furnace 70: die 80: winding

With reference to the accompanying drawings which is a preferred embodiment for practicing the present invention described above will be described in detail.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The following terms are terms set in consideration of functions in the present invention, which may vary depending on the intention or custom of the producer, and the definitions should be made based on the contents throughout the present specification.

First, the present invention is shown in Figures 1 to 3, Figure 1 is a block diagram showing to show that the present invention is implemented, Figure 2 is a cross-sectional view showing to explain the heating furnace of the present invention, Figure 3 shows a side view showing the configuration of the heating furnace of the present invention.

That is, the present invention is to clean the ultrasonic wire to remove the iron oxide displaced from the carrier and the bobbin and the raw material input unit for winding the wire having a diameter of 0.9mm to the carrier, and the surface of the wire introduced above Ultrasonic cleaning unit, the first heating furnace for pre-heating to improve the coating thickness before plating the ultrasonically cleaned wire, and the guide roller in the molten metal tank to maintain the level of the wire and the wire passed through the tub Is a device to pass through the non-oxidizing gas chamber so that the plating line passes vertically and to prevent the plated layer from being formed, and the annealing unit passes through the inert inorganic particles before hardening out of the plating bath. A second furnace for galvanic annealing in flames using a phosphorus muffler, and the above procedure In the electrode wire manufacturing method for a coating wire consisting of a die for squeezing a coarse wire into a predetermined frame, and a winding portion for winding the wire, the first heating furnace and the second heating furnace are fine holes on a pipe made of carbon and deoxidized copper, respectively. Forming dozens, and forming inorganic particles and carbon-based particles on the outer circumferential surface of the pipe, to form an inlet and outlet for injecting and discharging reducing gas at each end of the pipe, respectively, the first heating furnace oxide In order to improve the coating thickness of the coating layer by removing the preheating and pre-plating of the wire, the inorganic fine particles are placed in a heating tube and sufficiently contacted to perform annealing and heat treatment. Made into a non-oxidizing gas atmosphere, The second heating furnace has a sufficient diffusion layer and a gamma image, so that the flexibility and workability are good, so that the galvannealing is prevented from peeling off even if the plating layer is thick, and a large voltage is applied during discharge processing. For the purpose of illustration, the wires are processed in a ceramicization step by inserting inorganic particles into a semiconductor.

The carbon-based fine particles are made of one of kimberlite, boron nitride, zirconium dioxide, germanium, titanium boron, silicon carbide (SiC), carbon, graphite, molybdenum, and a far-infrared emitter.

In addition, the electrode wire manufactured by the manufacturing method is a raw material input unit 10 for winding the wire 11 having a diameter of 0.9 mm to the carrier, the foreign matter and the carrier on the surface of the wire 11 introduced above, Ultrasonic cleaning unit 20 for washing with ultrasonic waves to remove the iron oxide displaced from the bobbin, and the first heating furnace 30 for preheating to improve the coating thickness before plating the ultrasonically cleaned wire in the above And a hot dip bath 40 to maintain the level of the wire by installing a guide roller in the molten bath so that the wire passed through the bath is vertically drawn out and the plating wire passes through the non-oxidizing gas chamber so that the plating layer does not become knitted. ) And the molten alloy portion 50 and a muffler, which is an annealing device after passing through an inert inorganic particle before hardening out of the plating bath, In the second heating furnace 60 for galvanic annealing, a die 70 for weaving the wire having undergone the above process into a constant mold, and a winding unit 80 for winding the wire 11, The first heating furnace 30 and the second heating furnace 60 respectively form dozens of fine holes 13 on the pipe 12 made of carbon and deoxidation copper, and inorganic particulates on the outer circumferential surface of the pipe 12. 14 and carbon-based fine particles are formed, and the inlet 15 and the outlet 16 for injecting and discharging reducing gas are formed at both ends of the pipe 12, respectively, and the first heating furnace 30 In order to improve the coating thickness of the plating layer by removing the oxide and preheating the wire, the inorganic particles are placed in the heating tube 31 and sufficiently contacted by annealing and heat-treated, and the reducing gas is injected into the inlet of one side of the pipe 11. Phosphorus non-oxidizing gas and water vapor Air annealed in a non-oxidizing gas atmosphere, and the second heating furnace 60 has a sufficient diffusion layer and gamma image to obtain galvanic annealing so as to prevent peeling without splashing even if the plating layer is thick due to its flexibility and workability. In the case of electrical discharge machining, the wire is manufactured by inserting the inorganic particles 14 into a semiconductor so as to form a semiconductor in order to exhibit conductor properties.

On the other hand, the present invention may be variously modified in the above configuration and may take various forms.

It is to be understood, however, that the present invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

In the present invention made as described above, the wire 11 having a diameter of 0.9 mm is wound on the carrier to the raw material input part 10.

At this time, the ultrasonic cleaning unit 20 is cleaned by ultrasonic to remove the foreign matter and the iron oxide from the carrier and bobbin on the surface of the wire 11 is injected in the ultrasonic cleaning after the first heating furnace (30) The pre-heating is performed to improve the coating thickness of the wire 11 before plating, but the inorganic fine particles or carbon in the heating tube 31 to improve the coating thickness of the plating layer by removing the oxide and preheating the wire before plating. After filling the system particles and sufficiently contacting the annealing heat treatment, the non-oxidizing gas and water vapor, which are reducing gases, are put in the inlet 12 on one side of the pipe 11 to make a non-oxidizing gas atmosphere, thereby performing bright annealing. If the bright annealing at does not interfere with the plating without the re-cleaning process.

The hot-dip plating tank 40 and the melted alloy portion 50 is provided with a guide roller in the molten metal tank to maintain the horizontal level of the wire and the wire passing through the tub to be vertically escaped so that the plating wire passes through the non-oxidizing gas chamber In order to prevent the plating layer from being formed, especially brass has a strong anticorrosion property, and when NH ₃ is generated, stress corrosion cracking occurs. In addition, when inorganic particles are coated on the plating layer by melting, ceramics are formed.

Pure zinc coating only during the electrical discharge machining has a problem that is reduced to about 50% in the precision machining surface because the difference between the processing hole width between the wire transfer and the discharge surface occurs as the zinc is worn.

A solid, ductile solid solution is very resistant to abrasion during discharge pulses and at the same time promotes discharge path ionization.

Therefore, ceramic-coated wire has a superior function than pure zinc-coated wire, and exhibits conductor characteristics when a large voltage is applied, and space and speed are faster than electroplating in the production by the above method. Productivity will increase.

The second heating furnace 60 is galvannealed in a flame using a muffler, which is a device for passing an inert inorganic particle and then annealing before hardening out of the plating bath, to obtain a sufficient diffusion layer and a gamma image to obtain flexibility and processability. Fine galvanizing is performed to prevent peeling even if the plated layer is thick, and if a large voltage is applied during discharge processing, ceramics are inserted into ceramics by inserting inorganic particles so as to form a conductor to show conductorability. This product is a solid, ductile solid solution that is very resistant to abrasion during discharge pulses and at the same time promotes discharge path ionization.

It is made by forming a die 70 for weaving the wire through the above process into a constant mold, and a winding portion 80 for winding the wire 11.

Carbon-based fine particles may be used instead of the inorganic fine particles 14, but the carbon-based fine particles may include Kimberlite, boron nitride, zirconium dioxide, germanium, titanium boron, silicon carbide (SiC), carbon, graphite, and molybdenum. And it can be used to select any one of the ceramic type high far-infrared radiator yarn.

Due to the above method, the infrared heating through the micro-holes prevents scratching of the surface, prevents oxidation by reducing gas injection, improves strength, improves surface quality, stabilizes mechanical properties, and improves freshness due to improved thermal efficiency. It can be carried out at the place, temperature control is easy, and the surface of the wire is coated with inorganic fine particles to improve the tensile strength and the processing speed.

Lastly, with high speed and high precision of wire discharge processing machine, zinc coating wire is coated with zinc on core material such as copper, brass or copper coating steel wire, which has good discharge characteristics of zinc and is due to latent heat of evaporation of zinc. Due to the cooling effect of the wire, disconnection does not easily occur, and zinc oxide on the surface is effective for preventing short circuit and shows excellent electric discharge machining characteristics.

In the zinc coating wire, the thickness of the zinc film varies from several μm to several tens of μm, and depends on the thickness and processing purpose of the workpiece, but the thicker the core is protected, the more difficult it is to be disconnected and the processing current can be increased.

As described in detail above, the present invention forms dozens of fine holes on a pipe made of carbon pipes or deoxidized copper pipes in a method of manufacturing electrode wires, and forms inorganic particles or carbon particles on the outer circumferential surface of the pipe. By forming an inlet and an outlet for injecting and discharging reducing gas, respectively, at both ends of the pipe, the far-infrared heat conduction of the inorganic particles or carbonaceous particles is easily transmitted to the wire through the fine holes to improve thermal efficiency. Effect, and the effect of improving the tensile strength and processing speed during the wire discharge machining, and has the effect of facilitating the temperature control according to the quality characteristics of the wire, such as mechanical properties, and at the same time enables heat treatment in a small space, This improves the coating thickness of the coated sole It is apparent that the invention is a very useful invention that can suppress the generation of powder and improve the performance of the overall wire and improve the reliability of using the same.

Claims (3)

A raw material inlet for winding a wire having a diameter of 0.9 mm onto a carrier, an ultrasonic cleaner for ultrasonically cleaning to remove iron oxides displaced from carriers and bobbins, and foreign substances on the surface of the wires; The first heating furnace for preheating to improve the thickness of the coating film before coating the ultrasonically cleaned wire, and the guide roller in the molten metal tank to maintain the horizontal level of the wire and the wire passed through the tub vertically exits Using a hot dip bath and a molten alloy to prevent the plated layer from being formed by allowing the plating wire to pass through the non-oxidizing gas chamber, and using a muffler, which is an annealing device after passing through an inert inorganic particle before hardening out of the plating bath. Second furnace for galvanic annealing in flames and wires In the electrode wire manufacturing method for a coating wire consisting of a die for squeezing a predetermined frame, and the winding portion for winding the wire, The first heating furnace and the second heating furnace respectively form dozens of fine holes on the pipe made of carbon and deoxidized copper, inorganic particulates and carbon fine particles are formed on the outer circumferential surface of the pipe, and both ends of the pipe Inlet and outlet respectively for injecting and discharging reducing gas is formed, In order to improve the coating thickness of the plating layer by removing the oxide and preheating the wire before plating, the first heating furnace is filled with inorganic particulates in a heating tube and sufficiently brought into contact with annealing for heat treatment, and reducing gas is applied to the inlet of one side of the pipe. It consists of phosphorus non-oxidizing gas and water vapor to make a non-oxidizing gas atmosphere to bright annealing, The second heating furnace has a sufficient diffusion layer and a gamma image to obtain a good flexibility and workability galvanic annealing so as to prevent peeling without splashing even if the plated layer is thick, and exhibits the conductive properties when a large voltage is applied during discharge processing In order to insert the inorganic particles so that the wire is made of a semiconductor electrode wire manufacturing method for a coating wire, characterized in that the treatment in the ceramic step. The method of claim 1, The carbon-based fine particles are selected from the group consisting of kimberlite, boron nitride, zirconium dioxide, germanium, titanium boron, silicon carbide (SiC), carbon, graphite, molybdenum and far-infrared emitters high ceramic type Electrode wire manufacturing method for a coating wire. Ultrasonic wave to remove the iron oxide displaced from the carrier and bobbin, and the raw material input unit 10 for winding the wire 11 having a diameter of 0.9 mm to the carrier, and the surface of the wire 11 introduced above Ultrasonic cleaning unit 20 for cleaning with a wire, the first heating furnace 30 for pre-heating to improve the coating thickness before plating the ultrasonically cleaned wire in the above, and by installing a guide roller in the molten metal bath Keeping the level of the wire passing through the tub vertically and the plated wire passes through the non-oxidizing gas chamber so that the plating layer does not cause the knitting layer and the molten alloy portion 50, the plating A second heating furnace 60 which allows galvanic annealing in the flame using a muffler, which is a device that passes through an inert inorganic particle and then anneals before hardening out of the bath, In that the die (70) for weaving a certain framework for a rough process, the wire group, consisting of the wire 11 to the winding portion 80 for winding, The first heating furnace 30 and the second heating furnace 60 form dozens of fine holes 13 on the pipe 12 made of carbon and deoxidized copper, respectively, and inorganic particulates on the outer circumferential surface of the pipe 12. (14) and the carbon-based fine particles, and the inlet 15 and the outlet 16 for injecting and discharging the reducing gas, respectively formed at both ends of the pipe 12, In order to improve the thickness of the coating layer of the plating layer by removing the oxide and preheating the wire before plating, the first heating furnace 30 is filled with inorganic particulates in the heating tube 31 and sufficiently brought into contact with the annealing heat treatment, and the pipe 11 ) Put an anoxic gas and water vapor as reducing gas into the non-oxidizing gas atmosphere at the inlet of one side, The second heating furnace 60 obtains sufficient diffusion layer and gamma image, and has good flexibility and workability, so that it does not peel off even if the plating layer is thick, and performs galvanic annealing to prevent splashing. In order to produce a wire, the electrode wire is manufactured by inserting the inorganic particles 14 into a semiconductor to ceramic.