KR100961986B1 - How to Play Closed Wires - Google Patents

How to Play Closed Wires Download PDF

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KR100961986B1
KR100961986B1 KR20080039143A KR20080039143A KR100961986B1 KR 100961986 B1 KR100961986 B1 KR 100961986B1 KR 20080039143 A KR20080039143 A KR 20080039143A KR 20080039143 A KR20080039143 A KR 20080039143A KR 100961986 B1 KR100961986 B1 KR 100961986B1
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wire
copper wire
copper
welding
undergone
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KR20090113425A (en
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곽병근
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곽병근
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B15/00—Apparatus or processes for salvaging material from cables
    • H01B15/005—Apparatus or processes for salvaging material from cables by cutting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]

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  • Manufacture And Refinement Of Metals (AREA)
  • Wire Processing (AREA)

Abstract

본 발명에 의한 폐전선의 재생 방법은 폐전선(10)으로부터 피복(15)을 제거하여 동선(11)을 수거하는 탈피 단계와, 상기 탈피 단계를 통해서 수거된 동선(11)을 가닥별로 분리해내는 해체 단계와, 상기 해체 단계를 통해서 분리된 개별 동선(11)을 곧게 펴주는 직선화 단계, 상기 직선화 단계를 거친 동선(11)의 양측 종단부를 절단하는 커팅 단계와, 상기 커팅 단계를 거친 동선(11)의 종단부가 연접하도록 한 상태에서 상기 연접부를 용접하는 용접 단계와, 상기 용접 단계를 거친 동선(11)을 원하는 선경으로 인발 가공하는 선경 성형 단계와, 상기 선경 성형 단계를 거친 동선(11)을 세척시키는 세척단계와, 상기 세척 단계를 거친 동선(11)을 보빈에 와인딩하여 작업을 완료하는 와인딩 단계로 이루어짐으로써, 용광로를 구비하지 않고, 저가의 비용으로 용이하게 폐전선(10)을 재생할 수 있는 발명에 관한 것이다.Recycling method of the waste wire according to the present invention is stripping step of removing the coating (15) from the waste wire (10) to collect the copper wire 11, and separating the copper wire (11) collected by the stripping step by strand The dismantling step, the straightening step of straightening the individual copper wires 11 separated through the disassembling step, a cutting step of cutting both ends of the copper wire 11 which has undergone the straightening step, and a copper wire which has undergone the cutting step ( 11) a welding step of welding the connection part in a state where the end part of the step 11 is connected, a wire forming step of drawing the copper wire 11 which has undergone the welding step to a desired wire diameter, and a copper wire 11 having undergone the wire forming step By the washing step and the winding step of completing the operation by winding the copper wire 11 passed through the washing step to the bobbin, there is no furnace, and easily at low cost The present invention relates to an invention capable of regenerating closed wires (10).

폐전선, 재생, 용접 Waste wire, regeneration, welding

Description

폐전선의 재생 방법{Recycle method of wasted electric wires}Recycle method of wasted electric wires}

본 발명은 폐전선의 재생 방법에 관한 것으로서, 더욱 상세히는 폐전선에서 동선을 수거하여 용접한 후, 원하는 선경으로 성형하여 재생함으로써, 용이하게 폐전선을 재활용할 수 있는 폐전선의 재생 방법에 관한 것이다.The present invention relates to a method for regenerating waste wires, and more particularly, to a method for regenerating waste wires that can easily recycle waste wires by collecting and welding copper wires from the waste wires, and then molding and regenerating them into desired wire diameters. will be.

일반적으로 폐전선을 재활용하기 위해서는 절연제인 피복을 제거한 후, 내부에 들어 있는 동선(銅線)을 뽑아내어 수거한다. 그리고, 상기 동선들을 칩 상태로 커팅하고 나서, 용광로에 넣어서 다시 용해한다. 그리고, 인발 공정을 거쳐 원하는 선경(線徑)으로 동선을 성형하게 된다.In general, in order to recycle the waste wire, after removing the insulating coating, the copper wire inside is removed and collected. Then, the copper wires are cut in a chip state and put in a furnace to be dissolved again. And a copper wire is shape | molded to a desired wire diameter through a drawing process.

상기 종래 기술에 의하면, 용광로를 구비하는 데 대한 시설비가 많이 소요되고, 상기 용광로를 통해서 폐전선을 용해하는데 고도의 노하우를 필요로 함으로써 작업이 어려우며, 용광로를 운영하기 위한 연료비가 많이 소요되는 문제점이 있었다. 따라서, 본 발명에서는 상기 용광로를 구비하지 않고서도 용이하게 폐전선을 재생할 수 있는 방법을 제공하는 것을 목적으로 한다.According to the prior art, a lot of facility costs for providing a furnace, a high level of know-how is required to melt the waste wire through the furnace is difficult to work, and a lot of fuel costs for operating the furnace there was. Accordingly, an object of the present invention is to provide a method for easily regenerating waste wires without providing the furnace.

본 발명에 의한 폐전선의 재생 방법은 폐전선으로부터 피복을 제거하여 동선을 수거하는 탈피 단계와, 상기 탈피 단계를 통해서 수거된 동선을 가닥별로 분리해내는 해체 단계와, 상기 해체 단계를 통해서 분리된 개별 동선을 곧게 펴주는 직선화 단계, 상기 직선화 단계를 거친 동선의 양측 종단부를 절단하는 커팅 단계와, 상기 커팅 단계를 거친 동선의 종단부가 연접하도록 한 상태에서 상기 연접부를 용접하는 용접 단계와, 상기 용접 단계를 거친 동선을 원하는 선경으로 인발 가공하는 선경 성형 단계와, 상기 선경 성형 단계를 거친 동선을 세척시키는 세척단계와, 상기 세척 단계를 거친 동선을 보빈에 와인딩하여 작업을 완료하는 와인딩 단계로 이루어지도록 한다.The regeneration method of the waste wire according to the present invention includes a stripping step of removing the cover from the waste wire and collecting copper wire, a decomposing step of separating the copper wire collected by the stripping step by strand, and separated through the dismantling step. A straightening step of straightening individual copper wires, a cutting step of cutting both ends of the copper wires having undergone the straightening step, and a welding step of welding the joints in a state in which the ends of the copper wires having undergone the cutting step are connected to each other; The wire forming step of drawing the copper wire after the step to the desired wire diameter, the washing step of washing the copper wire passed through the wire forming step, and the winding step of winding the copper wire passed through the washing step to the bobbin to complete the work. do.

본 발명에 의한 폐전선의 재생 방법은 용광로를 사용하지 않고서도 폐전선을 용이하게 재생할 수 있음으로써, 저가의 시설비로 작업이 가능하고, 용광로를 운영 하는 기술적인 노하우를 필요로 하지 않음으로써, 용이하게 재생할 수 있으며, 용광로처럼 많은 연료비를 필요로 하지 않으므로써, 저가의 생산비로 폐전선을 재생할 수 있는 효과가 있다.The recycling method of waste wires according to the present invention can be easily recycled without using a furnace, so that it is possible to work at a low cost, and does not require technical know-how to operate the furnace. It can be easily regenerated, and since it does not require as much fuel cost as a furnace, there is an effect of regenerating waste wires at a low production cost.

이하, 첨부되는 도면과 관련하여 상기 목적을 달성하기 위한 본 발명의 공정과 실시예를 살펴보면 다음과 같다.Hereinafter, a process and an embodiment of the present invention for achieving the above object with reference to the accompanying drawings are as follows.

도 1은 본 발명에 의한 폐전선의 재생 방법을 공정별로 도시한 블럭도, 도 2는 본 발명에 의한 폐전선의 재생 방법에서 탈피 단계, 직선화 단계, 커팅 단계를 도시한 공정도, 도 3은 본 발명에 의한 폐전선의 재생 방법에서 용접 단계, 선경 성형 단계를 도시한 공정도, 도 4는 본 발명에 의한 폐전선의 재생 방법의 선경 성형 단계에서 사용되는 세심기의 단면을 도시한 것으로서 동선을 가압하는 과정을 도시한 단면도로서 함께 설명한다.1 is a block diagram showing the regeneration method of the waste wire according to the present invention by process, Figure 2 is a process diagram showing the stripping step, straightening step, cutting step in the regeneration method of the waste wire according to the present invention, Figure 3 Process diagram showing the welding step and wire diameter forming step in the method of reclaiming the waste wire according to the present invention, Figure 4 is a cross-sectional view of the washing machine used in the wire forming step of the regeneration method of the waste wire according to the present invention It demonstrates together as sectional drawing which shows the process of pressurizing.

본 발명에서는 폐전선(10)으로부터 동선(11, 銅線)을 분리하여 연결한 후, 원하는 선경(線徑)으로 성형하여 재생하는 것을 특징으로 한다.In the present invention, after separating and connecting the copper wire (11, 銅線) from the closed wire (10), it is characterized in that it is formed into a desired wire diameter and reproduced.

이를 위하여 본 발명에서는 다음과 같이 공정이 이루어지도록 한다.To this end, in the present invention, the process is performed as follows.

폐전선(10)으로부터 피복(15)을 제거하여 동선(11, 銅線)을 수거하는 탈피 단계가 이루어지고, 상기 탈피 단계를 통해서 수거된 동선(11)을 가닥별로 분리해내는 해체 단계가 이루어진다. The stripping step of removing the coating 15 from the waste wire 10 to collect the copper wire 11 (, 銅線) is made, and the dismantling step of separating the collected copper wire 11 by strands through the stripping step is made. .

일반적으로 동선(11)은 여러 가닥이 합본되어 꼬여져서 형성됨으로써 상기 해체 단계가 선행되어야 한다. 상기 해체 단계를 통해서 분리된 개별 동선(11)은 모두 꼬불꼬불한 상태이므로 곧게 펴주는 직선화 단계가 이루어진다. 상기 직선화 단계는 통상적으로 직선기(100, 直線機)를 통해서 가능한데, 상기 직선기(100)는 다수 개의 롤러(110)가 구비됨으로써 상기 롤러(110) 사이를 동선(11)이 통과하면서 직선 상태로 펴지도록 한 일반적인 기계이다. In general, the copper wire 11 is formed by twisting several strands together to be preceded by the dismantling step. The individual copper wires 11 separated through the dismantling step are all straight and the straightening step is straightened. The straightening step is typically possible through the straightener 100, the straightener 100 is provided with a plurality of rollers 110 is a linear state while the copper wire 11 passes between the rollers 110 It is a general machine made to be unrolled.

상기 직선화 단계를 거친 동선(11)의 양측 종단부를 용접에 용이하도록 절단한 후, 버(bur)를 제거하는 커팅 단계가 이루어지는데, 이렇게 동선(11)의 양측 종단부를 절단함으로써, 연접 시, 절단면이 부합하게 되어 용접성이 좋게 된다. 절단 공구로서 초경 공구를 사용할 경우, 버(bur)가 발생하지 않음으로써, 보다 용이한 작업이 가능하다.After cutting both ends of the copper wire 11 through the straightening step for easy welding, a cutting step is performed to remove burs. Thus, by cutting both ends of the copper wire 11, the cutting surface at the time of connection This makes the weldability good. When the carbide tool is used as the cutting tool, burs are not generated, thereby making it easier to work.

상기 커팅 단계를 거친 동선(11)의 종단부가 연접하도록 한 상태에서 상기 연접부를 용접하는 용접 단계가 이루어진다. 이때 사용되는 용접 방법은 전기 저항 용접, 플래시 비트 용접, 초음파 용접 등이 가능한데, 초음파 용접을 사용함이 바람직한데 그 이유는 상기 초음파 용접을 사용할 경우, 용접부가 볼록하게 돌출되는 현상 없이 동선(11)을 부착시킬 수 있으며 물성의 변화가 없기 때문이다.A welding step of welding the connection part is performed in a state where the end portion of the copper wire 11 which has undergone the cutting step is connected. At this time, the welding method used may be electric resistance welding, flash bit welding, ultrasonic welding, etc., but it is preferable to use ultrasonic welding because, when the ultrasonic welding is used, the copper wire 11 may be formed without the convex protrusion of the welding portion. It can be attached and there is no change in physical properties.

상기 용접 단계를 거친 동선(11)을 인발 작업에 의해 원하는 선경(線徑)이 되게 하는 선경 성형 단계가 이루어지도록 한다. 상기 인발 작업은 동선(11) 보다 작은 홀이 형성된 다이(die)를 통과시켜 원하는 선경으로 가공할 수도 있고, 인발기의 일종인 세심기를 사용할 수도 있다. 상기 세심기는 일반적인 단조기계로서 도 4를 통해서 세심기에 구성된 다이(200)의 개략 구성을 살펴보면, 하우징(210) 중심에 동선(11)을 죄는 2개의 조오(240)가 구성되고 상기 조오(240)의 외측에는 볼이 (230)장착되며, 하우징(210)의 내측면에는 상기 볼(230)을 가압하는 다수 개의 볼(220)이 리테이너(250)에 의해 간격이 조정되어 하우징(210)의 내측면을 따라 회전하도록 구성된 것이다. 따라서, 상기 하우징(210)의 내측면을 따라 회전하는 볼(220)들에 의해 조오(240)에 장착된 양측 볼(230)이 수축 및 팽창을 반복하게 되고, 이로 인해서 상기 조오(240)도 내측방으로 수축했다가 팽창하는 작동을 반복하게 된다. 따라서, 양측 조오(240) 사이로 통과하는 동선(11)은 조오(240)에 의해 압축되어 원하는 선경으로 가공된다. 조오(240)에서 동선(11)이 접하는 면에는 동선(11)이 삽입되는 홈(245)이 형성된다. 상기 세심기에 대해서는 당해업자라면 누구나 알 수 있는 사항이기에 자세한 설명은 생략한다.A wire diameter forming step of forming the desired wire diameter by the drawing operation of the copper wire 11 which has undergone the welding step is performed. The drawing operation may be processed into a desired wire diameter by passing a die having a hole smaller than the copper wire 11, or may use a washing machine which is a kind of drawing machine. Looking at the schematic configuration of the die 200 configured in the planting machine through Figure 4 as a general forging machine, two jaws 240 for fastening the copper wire 11 in the center of the housing 210 is configured and the jaw 240 The outside of the ball 230 is mounted, the inner surface of the housing 210 a plurality of balls 220 for pressing the ball 230 is adjusted by the retainer 250, the interior of the housing 210 It is configured to rotate along the side. Therefore, both balls 230 mounted on the jaws 240 are repeatedly contracted and expanded by the balls 220 rotating along the inner surface of the housing 210, and thus the jaws 240 are also expanded. The operation of contracting and expanding inwardly is repeated. Therefore, the copper wire 11 passing between both jaws 240 is compressed by the jaws 240 and processed into a desired wire diameter. A groove 245 into which the copper wire 11 is inserted is formed at a surface where the copper wire 11 is in contact with the jaw 240. The washing machine is a matter known to those skilled in the art, so detailed description thereof will be omitted.

상기 선경 성형 단계는 인발 작업을 2차, 3차 다수 회 거치도록 함으로써 용이하게 선경이 조정되도록 할 수 있는데, 일례로 선경 10mm 동선(11)을 3mm로 성형할 경우, 7mm로 인발한 후, 5mm로 인발하고 나서, 다시 3mm로 인발하게 된다.In the wire diameter forming step, the wire diameter can be easily adjusted by passing the drawing operation a second time and a third time. For example, when the wire diameter 10mm copper wire 11 is formed into 3mm, the wire diameter is drawn to 7mm, and then 5mm. After drawing with, it is drawn again with 3mm.

상기 선경 성형 단계를 거친 동선(11)은 표면에 이물질로 오염되어 있으므로 염산 100% 원액을 통과시켜 세척시키는 세척단계가 이루어지도록 한다.The copper wire 11, which has undergone the wire diameter forming step, is contaminated with foreign matter on the surface, so that the washing step is performed by passing 100% hydrochloric acid stock solution.

상기 세척 단계를 거친 동선(11)을 보빈에 와인딩하여 작업을 완료하는 와인딩 단계가 이루어지도록 한다.Winding step of winding the copper wire 11 through the washing step to the bobbin is completed to complete the work.

이렇게 권취된 동선(11)은 다양한 방법으로 합본되어 합성수지로 피복되어 사용될 수 있다.The copper wire 11 wound in this way may be used in combination with various synthetic resins.

본 발명에서는 다른 실시예로서 상기 탈피 단계에서 세척 단계가 이루어지고, 상기 세척단계를 거친 동선(11)을 에나멜 용액을 통과하도록 한 후, 건조시킴 으로써, 동선(11)에 에나멜이 피복되는 피복 단계가 이루어지고, 상기 피복 단계를 거친 동선(11)을 와인딩하여 작업을 완료하는 와인딩단계가 이루어지도록 할 수도 있다.According to another embodiment of the present invention, the washing step is performed in the stripping step, and the coating step in which the enamel is coated on the copper wire 11 by allowing the copper wire 11 passed through the washing step to pass through the enamel solution, followed by drying. Is made, the winding step of winding the copper wire 11 after the coating step may be made to complete the work.

따라서, 상기 본 발명에 의해 폐전선(10)을 용이하게 원하는 선경의 동선(11)으로 재생할 수 있게 된다.Therefore, according to the present invention, it is possible to easily reproduce the closed wire 10 to the copper wire 11 of the desired wire diameter.

도 1은 본 발명에 의한 폐전선의 재생 방법을 공정별로 도시한 블럭도.1 is a block diagram showing the regeneration method of a waste wire according to the present invention for each step.

도 2는 본 발명에 의한 폐전선의 재생 방법에서 탈피 단계, 직선화 단계, 커팅 단계를 도시한 공정도.Figure 2 is a process chart showing the stripping step, straightening step, cutting step in the regeneration method of the waste wire according to the present invention.

도 3은 본 발명에 의한 폐전선의 재생 방법에서 용접 단계, 선경 성형 단계를 도시한 공정도.Figure 3 is a process diagram showing the welding step, the wire diameter forming step in the regeneration method of the waste wire according to the present invention.

도 4는 본 발명에 의한 폐전선의 재생 방법의 선경 성형 단계에서 사용되는 세심기의 단면을 도시한 것으로서 동선을 가압하는 과정을 도시한 단면도.Figure 4 is a cross-sectional view showing a process of pressing the copper wire as showing a cross section of the washing machine used in the wire diameter forming step of the regeneration method of the waste wire according to the present invention.

*도면의 주요 부분에 사용된 부호의 설명** Description of the symbols used in the main parts of the drawings *

10: 폐전선 10: closed wire

11: 동선11: copper wire

15: 피복 15: cloth

Claims (2)

폐전선의 재생 방법에 있어서,In the regeneration method of the closed wire, 폐전선(10)으로부터 피복(15)을 제거하여 동선(11)을 수거하는 탈피 단계와, A stripping step of removing the sheath 15 from the waste wire 10 to collect the copper wire 11; 상기 탈피 단계를 통해서 수거된 동선(11)을 가닥별로 분리해내는 해체 단계와,A dismantling step of separating the copper wires 11 collected by the stripping step by strand; 상기 해체 단계를 통해서 분리된 개별 동선(11)을 곧게 펴주는 직선화 단계, Straightening step of straightening the separate copper wire (11) separated through the dismantling step, 상기 직선화 단계를 거친 동선(11)의 양측 종단부를 절단하는 커팅 단계와, A cutting step of cutting both ends of the copper wire 11 which has undergone the straightening step; 상기 커팅 단계를 거친 동선(11)의 종단부를 연접시켜 용접하는 용접 단계와, A welding step of connecting and welding the end portions of the copper wires 11 which have undergone the cutting step; 상기 용접 단계를 거친 동선(11)을 원하는 선경으로 인발 가공하는 선경 성형 단계와, A wire diameter forming step of drawing the copper wire 11 subjected to the welding step to a desired wire diameter; 상기 선경 성형 단계를 거친 동선(11)을 100% 염산으로 세척시키는 세척단계와, A washing step of washing the copper wire 11 which has undergone the wire forming step with 100% hydrochloric acid, 상기 세척 단계를 거친 동선(11)을 보빈에 와인딩하여 작업을 완료하는 와인딩 단계로 이루어지는 것을 특징으로 하는 폐전선의 재생 방법.Winding step of winding the copper wire 11 after the washing step to the bobbin to complete the work, characterized in that the regeneration of the waste wire. 폐전선의 재생 방법에 있어서,In the regeneration method of the closed wire, 폐전선(10)으로부터 피복(15)을 제거하여 동선(11)을 수거하는 탈피 단계와, A stripping step of removing the sheath 15 from the waste wire 10 to collect the copper wire 11; 상기 탈피 단계를 통해서 수거된 동선(11)을 가닥별로 분리해내는 해체 단계 와,A dismantling step of separating the copper wires 11 collected by the stripping step by strand; 상기 해체 단계를 통해서 분리된 개별 동선(11)을 곧게 펴주는 직선화 단계, Straightening step of straightening the separate copper wire (11) separated through the dismantling step, 상기 직선화 단계를 거친 동선(11)의 양측 종단부를 절단하는 커팅 단계와, A cutting step of cutting both ends of the copper wire 11 which has undergone the straightening step; 상기 커팅 단계를 거친 동선(11)의 종단부를 연접시켜 용접하는 용접 단계와, A welding step of connecting and welding the end portions of the copper wires 11 which have undergone the cutting step; 상기 용접 단계를 거친 동선(11)을 원하는 선경으로 인발 가공하는 선경 성형 단계와, A wire diameter forming step of drawing the copper wire 11 subjected to the welding step to a desired wire diameter; 상기 선경 성형 단계를 거친 동선(11)을 100% 염산으로 세척시키는 세척단계와, A washing step of washing the copper wire 11 which has undergone the wire forming step with 100% hydrochloric acid, 상기 세척단계를 거친 동선(11)을 에나멜 용액을 통과하도록 한 후, 건조시킴으로써, 동선(11)에 에나멜을 피복시키는 피복 단계와, The coating step of coating the enamel on the copper wire 11 by allowing the copper wire 11 passed through the washing step to pass through the enamel solution and then drying, 상기 피복 단계를 거친 동선(11)을 와인딩하여 작업을 완료하는 와인딩단계로 이루어지는 것을 특징으로 하는 폐전선의 재생 방법.Winding step of completing the work by winding the copper wire (11) after the coating step, the regeneration method of the waste wire.
KR20080039143A 2008-04-28 2008-04-28 How to Play Closed Wires Expired - Fee Related KR100961986B1 (en)

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KR102003284B1 (en) 2018-04-17 2019-10-01 주식회사 태산금속 Copper collection process device of waste wire
KR20190120889A (en) 2018-04-17 2019-10-25 주식회사 태산금속 Copper collection process method of waste wire and system of the same

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KR101147245B1 (en) * 2010-09-07 2012-05-18 한국전기연구원 recycling method of aged overhead conductor
CN107297394A (en) * 2017-07-03 2017-10-27 杭州富阳飞润五金有限公司 A kind of useless flat filament reclaims drawing process and wire drawing and paying mechanism
CN118675819B (en) * 2024-08-22 2024-10-22 山东爱普电气设备有限公司 Cable stripping device

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Publication number Priority date Publication date Assignee Title
KR102003284B1 (en) 2018-04-17 2019-10-01 주식회사 태산금속 Copper collection process device of waste wire
KR20190120889A (en) 2018-04-17 2019-10-25 주식회사 태산금속 Copper collection process method of waste wire and system of the same

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