KR100750809B1 - Plasma cutting electrode and method for the preparation thereof - Google Patents

Plasma cutting electrode and method for the preparation thereof Download PDF

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KR100750809B1
KR100750809B1 KR1020050094094A KR20050094094A KR100750809B1 KR 100750809 B1 KR100750809 B1 KR 100750809B1 KR 1020050094094 A KR1020050094094 A KR 1020050094094A KR 20050094094 A KR20050094094 A KR 20050094094A KR 100750809 B1 KR100750809 B1 KR 100750809B1
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electrode
silver
plasma cutting
present
hafnium rod
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KR1020050094094A
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Korean (ko)
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KR20070038801A (en
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김태홍
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김태홍
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00—Welding or cutting by means of a plasma
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3442—Cathodes with inserted tip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/008—Soldering within a furnace
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0211—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in cutting
    • B23K35/0216—Rods, electrodes, wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/302—Cu as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Arc Welding In General (AREA)
  • Plasma Technology (AREA)

Abstract

본 발명은 아크(Arc)를 발생시키는 하프늄봉을 은(銀)튜브에 삽입시켜 진공로에서 고온의 진공브레이징 방법으로 접합시키고, 상기 하프늄봉이 삽입된 은(銀)튜브를, 동(銅)재질의 본체에 삽입시켜 고온의 진공로에서 은납 링을 이용하여 진공브레이징 방법으로 접합시켜서 구성함을 특징으로 하는 플라즈마절단용 전극 및 그 제조방법을 제안한다.The present invention inserts a hafnium rod that generates an arc into a silver tube and joins it in a vacuum furnace at a high temperature vacuum brazing method, and the silver tube into which the hafnium rod is inserted is made of copper. The present invention proposes an electrode for plasma cutting and a method of manufacturing the same, wherein the electrode is inserted into the main body of the apparatus and bonded to the main body using a silver solder ring in a vacuum brazing method.

플라즈마. 전극. 은납. 브레이징. plasma. electrode. Silver lead. Brazing.

Description

플라즈마절단용 전극 및 그 제조방법{PLASMA CUTTING ELECTRODE AND METHOD FOR THE PREPARATION THEREOF}Plasma cutting electrode and its manufacturing method {PLASMA CUTTING ELECTRODE AND METHOD FOR THE PREPARATION THEREOF}

도 1은 본 발명 전극의 사시도면.1 is a perspective view of the electrode of the present invention.

도 2는 본 발명 전극의 제조가 완성되기 전의 부품순서가 표현된 도면.2 is a view showing the order of parts before the production of the electrode of the present invention is completed.

도 3과 도 4는 본 발명의 바람직한 실시 예에 따른 전극의 제조과정을 나타내는 도면.3 and 4 are views showing the manufacturing process of the electrode according to an embodiment of the present invention.

도 5는 본 발명의 바람직한 실시 예에 따른 전극의 단면도.5 is a cross-sectional view of an electrode according to a preferred embodiment of the present invention.

도 6은 본 발명의 바람직한 실시 예에 따른 프라즈마절단기의 토치선단부분에 적용되는 상태를 나타내는 개략적인 단면도.Figure 6 is a schematic cross-sectional view showing a state applied to the torch tip portion of the plasma cutting machine according to a preferred embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 본체 10a ; 홈10: main body 10a; home

20 : 은(銀)튜브 30 : 하프늄 봉20 silver tube 30 hafnium rod

40 : 은납 링 40: silver lead ring

본 발명은 프라즈마절단용 전극에 관한 것으로서, 보다 상세하게는 플라즈마 절단기의 토치 선단부의 내부에 장착되며, 아크(Arc)를 발생시키는 하프늄봉의 소모를 줄일 수 있도록 구성시킨 프라즈마절단용 전극 및 그 제조방법에 관한 것이다.The present invention relates to an electrode for plasma cutting, and more particularly, a plasma cutting electrode and a method of manufacturing the same, which are mounted inside the torch tip of a plasma cutting machine and configured to reduce consumption of hafnium rods generating arcs. It is about.

잘 알려진 바와 같이 프라즈마절단은 프라즈마가스와 아크(Arc)를 이용하여 철판을 절단하는 장치로 널리 사용되는 것으로서 주로 산업용으로 사용하고 있으나, 종래에는 상기 프라즈마절단에 사용되는 전극의 제작이 까다로워 수입에 의존하고 있는 실정이다.As is well known, plasma cutting is widely used as a device for cutting iron plates using plasma gas and arc, and is mainly used for industrial purposes. However, conventionally, the production of electrodes used for plasma cutting is difficult, depending on imports. I'm doing it.

그리고 종래의 플라즈마절단용 전극을 살펴보면, And look at the conventional plasma cutting electrode,

동(銅)재질의 본체에 아크(Arc)를 발생시키는 하프늄 봉을 삽입시켜 은(銀)납으로 브레이징(brazing) 접합하는 방법과, 하프늄 봉을 은(銀)튜브에 강제 삽입시켜 이를 동(銅)재질의 본체에 삽입하여 동(銅)재질의 본체전극과 접합(Bonding)하는 방법으로 제작되었다.A method of brazing a silver hafnium rod by inserting a hafnium rod that generates an arc into a main body of copper material, and a hafnium rod by forcibly inserting a silver hafnium rod into a silver tube I) It was manufactured by inserting into the main body of the material and bonding with the main body electrode of the copper material.

그러나 상기한 방법들은 하기와 같은 단점들이 있다.However, the above methods have the following disadvantages.

첫째로, 동(銅)재질의 본체에 아크를 발생시키는 하프늄 봉을 삽입시켜 은(銀)납 브레이징(brazing)으로 접합하는 방법은 동(銅)재질의 본체가 하프늄에 전달하는 열전도율이 뛰어나지 못하여 불규칙한 아크열이 발생되어 하프늄봉의 소모가 빨라져 수명이 단축되는 단점이 있으며,First, the method of inserting a hafnium rod generating arc into the main body of copper material and joining by silver lead brazing is not excellent in thermal conductivity that the main body of copper material transfers to hafnium. Irregular arc of heat is generated and the consumption of hafnium rods is faster, which shortens the service life.

둘째로, 하프늄 봉을 은(銀)튜브에 강제 삽입시켜 이를 동(銅)재질의 본체에 삽입하여 동(銅)재질의 본체전극과 접합(Bonding)하는 방법은, 하프늄 봉을 은(銀)튜브에 강제 삽입하여 틈이 없도록 삽입한다 하더라도 아크(Arc)발생시 전극의 온도 상승에 의하여 미세한 틈이 발생되어 불규칙한 전도에 의한 불규칙한 아크열이 발생되어 하프늄봉의 소모가 빨라져 수명이 단축되는 단점이 있었다.Second, a method of forcibly inserting a hafnium rod into a silver tube and inserting the hafnium rod into a main body made of copper material and bonding the hafnium rod to a main body electrode made of copper material is used. Even if it is inserted into the tube without a gap, there is a disadvantage in that a small gap is generated by the temperature rise of the electrode when the arc is generated, irregular arc heat is generated by irregular conduction, and the life of the hafnium rod is shortened by shortening the life.

따라서, 상기한 바와 같은 문제점을 해결하기 위한 본 발명의 목적은, 프라즈마절단용 전극에 있어서, 전극의 선단중앙부에 장착되어 아크(Arc)를 발생시키는 하프늄봉의 소모를 줄일 수 있도록 하여 전극의 수명을 연장시킬 수 있도록 구성시킨 프라즈마절단용 전극 및 그 제조방법을 제공함에 있다.Accordingly, an object of the present invention for solving the above problems, in the electrode for plasma cutting, is to be mounted on the front end of the electrode to reduce the consumption of the hafnium rod to generate an arc (Arc) to reduce the life of the electrode The present invention provides a plasma cutting electrode and a method of manufacturing the same.

상기한 바와 같은 목적을 달성하기 위한 본 발명은, 아크(Arc)를 발생시키는 하프늄봉(30)을 은(銀)튜브(20)에 삽입시켜 진공로에서 고온의 진공브레이징 방법으로 접합시키고, 상기 하프늄봉(30)이 삽입된 은(銀)튜브(20)를, 동(銅)재질의 본체(10)에 삽입시켜 고온의 진공로에서 은납(40)을 이용하여 진공브레이징 방법으로 접합시켜서 구성함을 특징으로 한다.The present invention for achieving the above object, the hafnium rod 30 for generating an arc (Arc) is inserted into the silver tube 20 and bonded by a high temperature vacuum brazing method in a vacuum furnace, The silver tube 20 into which the hafnium rod 30 is inserted is inserted into the main body 10 made of copper material, and is joined to each other by a vacuum brazing method using a silver lead 40 in a high temperature vacuum furnace. It is characterized by.

이하에서는 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세하게 설명한다. 그러나, 하기에서 설명되는 본 발명의 바람직한 실시 예는 본 발명의 기 술적 범위를 한정하려는 것은 아니며, 본 발명이 속한 기술 분야에서 통상의 기술을 가진 자에게 본 발명을 보다 명확하고 용이하게 설명하려는 것이다. 도면상에서 동일한 도면부호는 동일한 요소를 지칭한다. 또한 본 발명을 설명함에 있어, 관련된 공지 기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략한다. Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. However, the preferred embodiments of the present invention described below are not intended to limit the technical scope of the present invention, but to clearly explain the present invention to those skilled in the art to which the present invention pertains more clearly and easily. . Like reference numerals in the drawings refer to like elements. In describing the present invention, when 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.

우선 본 발명에서 제안하고자 하는 플라즈마절단용 전극의 개념을 살펴보면,Looking at the concept of the first electrode for plasma cutting proposed in the present invention,

프라즈마절단용 전극의 전방중앙부에 장착되어 아크(Arc)를 발생시키는 하프늄봉의 소모를 줄일 수 있도록 구성시킨 프라즈마절단용 전극을 제안하고자 하는 것이다.The present invention is to propose a plasma cutting electrode which is mounted in the front center portion of the plasma cutting electrode and configured to reduce the consumption of hafnium rods generating arcs.

또한 본 발명에서는 상기 프라즈마절단용 전극을 제조함에 있어서, 규칙적인 전도에 의하여 규칙적인 발생열을 전달시켜 규칙적인 아크(Arc)가 발생되도록 하여 아크(Arc)발생열에 의하여 증발되면서 소모되는 하프늄 봉의 수명을 연장할 수 있도록 하는 프라즈마절단용 전극을 제안하고자 한다.In the present invention, in the manufacture of the plasma cutting electrode, the regular heat generated by the regular conduction to generate a regular arc (Arc) to generate a life of the hafnium rod consumed while evaporated by the arc (Arc) generated heat. We propose a plasma cutting electrode that can be extended.

본 발명의 실시 예에 따라 앞에서 제안한 프라즈마절단용 전극의 전체구성은 도 2에서 나타내고 있는 바와 같다. 상기 도 2를 참조하면, 본 발명에서 구현하고자 하는 프라즈마절단용 전극은 플라즈마절단용 토치의 전극홀더(50)와 조립될 수 있도록 형성된 전극본체(10) 하부선단면의 중앙부에 홈(10a)이 형성되고, 상기 홈(10a)속에 하프늄 봉(30)을 삽입시켜 접합시킨 은(銀)튜브(20)를 삽입하고, 상기 은(銀)튜브(20)와 동(銅)재질의 본체(10)를 은(銀)납 링(40)을 이용하여 브레이징접합 시켜서 구성함을 특징으로 한다.According to an embodiment of the present invention, the overall configuration of the plasma cutting electrode proposed above is as shown in FIG. 2. Referring to FIG. 2, the plasma cutting electrode to be implemented in the present invention has a groove 10a at the center of the lower end surface of the electrode body 10 formed to be assembled with the electrode holder 50 of the plasma cutting torch. A silver tube 20 formed by inserting and joining the hafnium rod 30 into the groove 10a, and inserting the silver tube 20 and the main body 10 made of the same material as the silver tube 20. ) Is brazed by using a silver lead ring (40).

그리고 도3과 도4에서는 본 발명의 제조과정을 나타내고 있으며, 도5에서는 본 발명에 있어서 주요부분을 보다 자세히 표현한 단면도이며, 도6은 본 발명의 전극이 적용되는 상태를 간략하게 표현하였다. 3 and 4 illustrate the manufacturing process of the present invention, FIG. 5 is a cross-sectional view illustrating the main parts in more detail in the present invention, and FIG. 6 briefly illustrates a state in which the electrode of the present invention is applied.

상기와 같은 본 발명은, 아크(Arc)를 발생시키는 하프늄 봉(30)을 은(銀)튜브(20)에 삽입시켜 고온의 진공로에서 진공브레이징 방법으로 접합시키고, 상기 하프늄 봉(30)이 삽입된 은(銀)튜브(20)를, 동(銅)재질의 본체(10)에 형성된 홈(10a)속에 삽입시켜 진공로에서 은(銀)납브레이징 방법으로 접합시켜서 구성됨을 특징으로 한다. In the present invention as described above, the hafnium rod 30 for generating an arc is inserted into the silver tube 20 and bonded by a vacuum brazing method in a high temperature vacuum furnace, and the hafnium rod 30 is The inserted silver tube 20 is inserted into a groove 10a formed in the main body 10 made of copper material, and is joined by a silver lead brazing method in a vacuum furnace.

이하, 상기한 바와 같은 본 발명의 제조방법을 실시 예를 들어 설명하면 다음과 같다.Hereinafter, the production method of the present invention as described above with reference to Examples.

[실시예 1]Example 1

아크(Arc)를 발생시키는 하프늄 봉(30)과, 상기 하프늄 봉(30)을 삽입시키는 은(銀)튜브(20)를 진공로에서 910℃의 온도로서 50분 동안 진공브레이징 방법으로 접합시켜서 20시간동안 자연로냉 시키는 공정.A hafnium rod 30 generating an arc and a silver tube 20 into which the hafnium rod 30 is inserted are bonded in a vacuum furnace at a temperature of 910 ° C. for 50 minutes by vacuum brazing. Natural cooling process for time.

[실시예 2]Example 2

하프늄 봉(30)이 삽입된 은(銀)튜브(20)를, 동(銅)재질의 본체(10)에 형성된 홈(10a)에 삽입시켜 은(銀)납을 이용하여 진공로에서 700℃의 온도로서 30분동안 브레이징 방법으로 접합시켜서 10시간동안 자연로냉 시키는 공정. The silver tube 20 into which the hafnium rod 30 is inserted is inserted into the groove 10a formed in the main body 10 made of copper material, and 700 ° C in a vacuum furnace using silver lead. The process of splicing by brazing method for 30 minutes as the temperature of naturally cooled for 10 hours.

상기한 바와 같이 제조된 본 발명은, 플라즈마절단토치 선단부의 내부에 장착되어 플라즈마가스와 더불어 철판 등의 소재를 절단하는데 사용된다.The present invention manufactured as described above is mounted inside the plasma cutting torch tip and used to cut a material such as an iron plate together with plasma gas.

미설명부호... 10b는 은납링 안치홈, 40a는 은납용재, 60은 플라즈마가스공급용 세라믹, 70은 팁(tip), 80은 플라즈마기둥, 90은 절단소재, 100은 플라즈마절단기의 토치선단부 이다. Description: 10b is a silver lead ring settling groove, 40a is a silver lead material, 60 is a ceramic for plasma gas supply, 70 is a tip, 80 is a plasma column, 90 is a cutting material, 100 is a torch tip of a plasma cutting machine to be.

상술한 바와 같이 본 발명의 실시 예에 따른 플라즈마절단용 전극은 다음과 같은 효과를 달성한다.As described above, the electrode for plasma cutting according to the embodiment of the present invention achieves the following effects.

첫 번째로, 본 발명은 뛰어난 열전도로 인하여 하프늄봉의 소모가 적은 장점이 있다.First, the present invention has the advantage of low consumption of hafnium rod due to excellent thermal conductivity.

두 번째로, 본 발명은 은 튜브를 사용하여 냉각효과가 크므로 뛰어난 열전도 및 냉각으로 인하여 두께가 얇은 은튜브를 사용하여 원가를 줄일 수 있는 장점이 있다.Secondly, since the present invention has a large cooling effect using a silver tube, there is an advantage of reducing the cost by using a thin silver tube due to excellent thermal conductivity and cooling.

세 번째로, 본 발명은 뛰어난 열전도 및 냉각으로 인하여 전극의 수명을 연장시켜 제조원가를 줄일 수 있는 장점이 있다.Third, the present invention has the advantage of reducing the manufacturing cost by extending the life of the electrode due to excellent thermal conductivity and cooling.

네 번째로, 본 발명을 국내 제작하여 수입 대체할 수 있는 상승적인 효과가 있다.Fourthly, there is a synergistic effect that can replace the imported domestic production of the present invention.

Claims (2)

플라즈마절단용 전극에 있어서,In the electrode for plasma cutting, 아크(Arc)를 발생시키는 하프늄 봉(30)과; 상기 하프늄 봉(30)이 삽입되는 은(銀)튜브(20)와; Hafnium rod 30 which generates an arc; A silver tube 20 into which the hafnium rod 30 is inserted; 상기 하프늄 봉(30)이 삽입된 은(銀)튜브(20)를 삽입시킬 수 있는 홈(10a)이 형성된 동(銅)재질의 본체(10)와; A main body 10 made of copper material having a groove 10a into which the silver tube 20 into which the hafnium rod 30 is inserted can be inserted; 상기 하프늄 봉(30)이 삽입된 은(銀)튜브(20)와 본체(10)를 접합시킬 수 있는 은(銀)납 링(40)을 포함하여서 구성됨을 특징으로 하는 플라즈마절단용 전극. Electrode for plasma cutting characterized in that it comprises a silver lead ring (40) capable of joining the silver tube (20) inserted into the hafnium rod (30) and the main body (10). 아크(Arc)를 발생시키는 하프늄 봉(30)과, 상기 하프늄 봉(30)을 삽입시키는 은(銀)튜브(20)를 진공로에서 910℃의 온도로서 50분동안 진공 브레이징(brazing)방법으로 접합시켜서 20시간동안 자연로냉 시키는 공정과;A hafnium rod 30 for generating an arc and a silver tube 20 for inserting the hafnium rod 30 were vacuum brazed for 50 minutes at a temperature of 910 ° C. in a vacuum furnace. Bonding and naturally cooling for 20 hours; 상기 하프늄 봉(30)이 삽입된 은(銀)튜브(20)를, 동(銅)재질의 본체(10)에 형성된 홈(10a)에 삽입시켜 진공로에서 700℃의 온도로서 30분동안 은(銀)납 브레이징(brazing)방법으로 접합시켜서 10시간동안 자연로냉 시키는 공정을 포함하여서 됨을 특징으로 하는 플라즈마절단용 전극의 제조방법 . The silver tube 20 into which the hafnium rod 30 is inserted is inserted into the groove 10a formed in the main body 10 made of copper material, and the silver is heated at a temperature of 700 ° C. for 30 minutes in a vacuum furnace. (Iii) A method of manufacturing an electrode for plasma cutting, comprising the step of spontaneous cooling for 10 hours by bonding by lead brazing.
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KR100980446B1 (en) 2008-04-01 2010-09-07 주식회사 승일 electrode arc of plasma cutting machine
CN102430827A (en) * 2011-10-09 2012-05-02 上海工程技术大学 Vacuum brazing method of plasma cutting electrode
KR101595102B1 (en) 2015-05-12 2016-02-18 김태홍 Method for the preparation thereof and plasma cutting electrode and torch head structures and preparing method thereof

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KR20190085211A (en) 2018-01-10 2019-07-18 곽현만 The arc-metal for the electrode of plasma arc cutting torch
BR112022004676A2 (en) * 2019-09-12 2022-08-09 Kjellberg Stiftung WEAR PART FOR ARC TORCH AND PLASMA TORCH, ARC TORCH AND PLASMA TORCH COMPRISING THE SAME METHOD FOR PLASMA CUTTING AND METHOD FOR PRODUCING AN ELECTRODE FOR ARC TORCH AND PLASMA TORCH

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KR100478140B1 (en) * 2000-11-02 2005-03-22 재단법인 포항산업과학연구원 Method for Manufacturing Plasma Cutting Electrode

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KR20020000018A (en) * 2000-06-20 2002-01-04 박기홍, 김석희 Advertising method for crossword puzzle
KR100478140B1 (en) * 2000-11-02 2005-03-22 재단법인 포항산업과학연구원 Method for Manufacturing Plasma Cutting Electrode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100980446B1 (en) 2008-04-01 2010-09-07 주식회사 승일 electrode arc of plasma cutting machine
CN102430827A (en) * 2011-10-09 2012-05-02 上海工程技术大学 Vacuum brazing method of plasma cutting electrode
KR101595102B1 (en) 2015-05-12 2016-02-18 김태홍 Method for the preparation thereof and plasma cutting electrode and torch head structures and preparing method thereof

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