KR20100103136A - Contact tip for carbon dioxide welding torch - Google Patents

Contact tip for carbon dioxide welding torch Download PDF

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Publication number
KR20100103136A
KR20100103136A KR1020090021593A KR20090021593A KR20100103136A KR 20100103136 A KR20100103136 A KR 20100103136A KR 1020090021593 A KR1020090021593 A KR 1020090021593A KR 20090021593 A KR20090021593 A KR 20090021593A KR 20100103136 A KR20100103136 A KR 20100103136A
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South Korea
Prior art keywords
contact tip
carbon dioxide
hole
welding torch
ceramic ring
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KR1020090021593A
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Korean (ko)
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KR101107879B1 (en
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허인태
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주식회사 새해성
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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
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/26—Accessories for electrodes, e.g. ignition tips
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/287—Supporting devices for electrode holders
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/29—Supporting devices adapted for making use of shielding means
    • B23K9/291—Supporting devices adapted for making use of shielding means the shielding means being a gas
    • B23K9/295—Supporting devices adapted for making use of shielding means the shielding means being a gas using consumable electrode-wire
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/013—Method or apparatus with electric heating

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

Abstract

PURPOSE: A contact tip for a carbon dioxide welding torch is provided to create a weld bead in an accurate welding part by preventing a through hole from becoming widened. CONSTITUTION: A contact tip for a carbon dioxide welding torch is composed o f a through hole(11), a screw unit, a contact tip(5), a ceramic ring insert groove(13), a hole(100), and a hanging hoop(50). The through hole is formed inside the contact tip. The screw unit is formed on the rear end of the contact tip. The contact tip is connected to a gas diffuser through the screw unit. The ceramic ring insert groove is formed on the inner surface of the contact tip, and the diameter is bigger than the through hole.

Description

이산화탄소 용접토치용 컨택트 팁{Contact tip for carbon dioxide welding torch}Contact tip for carbon dioxide welding torch}

본 발명은 이산화탄소 용접토치용 컨택트 팁에 관한 것으로서, 더욱 상세하게는 이산화탄소 용접기의 선단에 결합되어 소재측으로 이송되는 용접봉을 지지하고, 가스가 분출되도록 하여 용접공정이 이루어지도록 하는 이산화탄소 용접토치의 화염부를 구성하는 부품 중 하나인 컨택트 팁의 개량에 관한 발명이다.The present invention relates to a contact tip for a carbon dioxide welding torch, and more particularly, a flame portion of a carbon dioxide welding torch coupled to a tip of a carbon dioxide welding machine to support a welding rod conveyed to a material side and allowing a gas to be ejected so that a welding process is performed. The present invention relates to an improvement of a contact tip, which is one of constituent parts.

통상적으로 가스 용접토치 중에서도 이산화탄소 용접기의 용접토치는 이산화탄소 및 아르곤 등의 불활성가스 속에서 용접이 행해지는 것으로, 용접봉에 의한 용융금속이 대기와 접촉되지 않아 산화나 질화를 방지할 수 있다.Usually, the welding torch of the carbon dioxide welder is a welding to be performed in an inert gas such as carbon dioxide and argon, among the gas welding torch, the molten metal by the electrode does not come into contact with the atmosphere can prevent oxidation or nitriding.

따라서, 철은 물론이고 알루미늄이나, 동, 스테인레스강, 특수강을 용접하는데 널리 사용되고 있다.Therefore, it is widely used for welding not only iron but also aluminum, copper, stainless steel, and special steel.

이산화탄소 용접기에 사용되는 이산화탄소 용접토치는, 원통형 노즐의 내부로 가스 디퓨저와 컨택트 팁이 결합된 화염부가 끼워지고, 후방으로 가스관과 몸체부가 조립된다.The carbon dioxide welding torch used in the carbon dioxide welding machine is fitted with a flame portion combined with a gas diffuser and a contact tip into a cylindrical nozzle, and a gas pipe and a body portion are assembled rearward.

상기 가스관을 통해 투입된 용접봉은 상기 컨택트 팁의 내부로 이동되어 모 재 사이에서 아크를 발생시키게 되고, 상기 가스 디퓨저를 통해 나온 이산화 탄소는 노즐로 이동되어 용접부분을 감싸면서 용접이 이루어지게 된다.The welding rod introduced through the gas pipe is moved into the contact tip to generate an arc between the base metals, and carbon dioxide emitted through the gas diffuser is moved to the nozzle to wrap the welding part, thereby performing welding.

종래 이산화탄소 용접기에 사용되는 이산화탄소 용접토치의 부품 중 컨택트 팁은 소모성이 강한 부품이었다.Among the parts of the carbon dioxide welding torch used in the conventional carbon dioxide welding machine, the contact tip was a consumable component.

대략적인 수명은, 작업조건에 따라 다소 차이는 있겠지만, 고온에 의해 용융되는 동으로 제작된 컨택트 팁은 약 8시간 작업을 기준으로 할 때 자동용접은 약 10개, 수동용접은 약 5개 정도의 컨택트 팁이 소모되는 것으로 알려져 있다.Approximate service life may vary depending on the working conditions, but contact tips made of copper melted by high temperature have about 10 automatic welding and 5 manual welding based on 8 hours of operation. Contact tips are known to be consumed.

따라서, 상기 컨택트 팁을 구입하기 위한 비용과 작업도중 수시로 컨택트 팁을 교체하기 위한 시간이 소요됨에 따라 비경제적이고, 또 비효율적이었다. Therefore, the cost of purchasing the contact tip and the time it takes to replace the contact tip from time to time during the operation was uneconomical and inefficient.

또한, 컨택트 팁은 끝부분이 용융되면서 내부의 용접봉과 융착되어 작업이 중단되는 경우도 발생하는 등 생산성이 현저히 떨어지는 단점이 있다.In addition, the contact tip has a disadvantage in that the productivity is significantly reduced, such as when the end is melted and fused with the welding rod inside the operation stops.

그리고, 컨택트 팁은 도 4에서 도시된 바와 같이 사용중 컨택트 팁의 전단부 마모로 인해 용접봉이 나오는 관통구멍(11)의 선단부가 마모에 의해서 확장되는 사례가 빈번하였고, 이러한 경우에 용접봉이 똑바로 공급되지 않고 굽어져 공급되기 때문에 모재의 다른 곳에 용접비드가 생성되어 제품불량이 발생하는 단점이 있다.And, as shown in Figure 4, the tip of the through-hole 11 through which the electrode comes out due to wear of the front end of the contact tip during use as shown in Figure 4 is often extended by wear, in this case the electrode is not supplied straight Since it is bent and supplied, weld beads are generated elsewhere in the base material, which causes a defect in the product.

상기한 문제점을 해결하기 위해 최근에 기술들은 세라믹 코팅을 제안하고 있으나, 작업시의 충격으로 인해 세라믹 코팅막의 파손이 되는 단점이 있다.Recently, in order to solve the above problems, techniques have been proposed for ceramic coating, but there is a disadvantage in that the ceramic coating film is damaged due to the impact during work.

그리고, 이산화탄소 용접기용 토치의 내부에 컨택트 팁이 형성되어 있는 노즐을 세라믹으로 만들어 컨택트 팁의 내구성과 내 마모성을 향상시켰으나, 노즐과 컨택트 팁 전체를 세라믹으로 제작하였기 때문에 통전이 원활하지 못하고, 또 비싼 제조원가로 인해 현장에서는 널리 사용되지 못하는 등 많은 문제점이 있었다.In addition, the contact tip is formed inside the torch for the carbon dioxide welding machine to improve the durability and wear resistance of the contact tip. However, since the nozzle and the contact tip are all made of ceramic, it is difficult to conduct electricity and is expensive. Due to manufacturing costs, there were many problems such as not widely used in the field.

상기한 문제점을 감안하여 안출한 본 발명의 이산화탄소 용접토치용 컨택트 팁은, 간단한 구조로서 제조단가가 저렴하도록 구성하며, 또한 통전에서 완벽하여 컨택트 팁의 기능을 확실하게 할 수 있으면서, 컨택트 팁의 소모를 현저히 개선시켜 정확한 용접비드를 제공하고 불량을 방지하는 등, 실용성을 극대화시킨 이산화탄소 용접토치용 컨택트 팁을 제공함에 그 목적이 있다.       The contact tip for carbon dioxide welding torch of the present invention devised in view of the above-mentioned problems is a simple structure, so that the manufacturing cost is low, and it is also perfect in power supply, which ensures the function of the contact tip, and consumes the contact tip. The purpose of the present invention is to provide a contact tip for a carbon dioxide welding torch that maximizes practicality, such as providing a precise welding bead and preventing defects.

본 발명의 이산화탄소 용접토치용 컨택트 팁은 용접봉을 공급하기 위하여 내부에 관통구멍이 형성되고, 가스 디퓨저와 결합되도록 하기 위하여 후단부 외주면으로 나사부가 구성되며, 특히 전단부 내면 중심에 용접봉 공급을 위한 관통구멍에는 세라믹 링이 삽입홈을 형성하여 관통구멍과 같은 직경의 구멍이 형성된 세라믹 링을 결합하고 상기 컨택트 팁의 전단부를 오므려 세라믹 링을 고정시킨 것을 특징으로 한다.The contact tip for the carbon dioxide welding torch of the present invention has a through hole formed therein for supplying a welding rod, and a screw portion is formed on the outer circumferential surface of the rear end to be combined with a gas diffuser. The hole is characterized in that the ceramic ring forms an insertion groove to couple the ceramic ring formed with a hole having the same diameter as the through hole, and pinch the front end of the contact tip to fix the ceramic ring.

본 발명에 따른 이산화탄소 용접토치의 컨택트 팁은 간단한 구조로서 제조단가가 저렴하며, 내구성 및 내마모성을 향상시켜 작업도중 수시로 컨택트 팁을 교체하기 위한 시간과 비용을 절감하여 제품의 제조원가 상승을 억제하는 효과가 있으며,The contact tip of the carbon dioxide welding torch according to the present invention has a simple structure and a low manufacturing cost, and improves durability and wear resistance, thereby reducing the time and cost for replacing the contact tip at any time during the operation, thereby suppressing an increase in manufacturing cost of the product. And

또한, 컨택트 팁의 전단부가 용융되어 내부의 용접봉과의 융착으로 인해 작업이 정지되는 일을 방지하며, 컨택트 팁의 전단부 마모로 인해 용접봉 공급을 위한 관통구멍이 넓어짐으로 인해 용접비드가 정확하게 용접부위에 생성되지 못해 발생하던 제품불량을 저하시켜줌으로써, 고품질의 용접제품을 생산하게 하는 등의 효과가 기대되는 발명이다.In addition, the front end of the contact tip is melted to prevent work from being stopped due to fusion with the welding rod inside, and the welding bead is accurately placed on the welded part due to the widening of the through hole for supplying the electrode due to the wear of the front end of the contact tip. It is an invention that the effect is expected to produce a high-quality welded product by reducing the product defects caused by not being produced.

이하 본 발명의 구성을 첨부된 도면과 함께 상세히 설명한다.Hereinafter, the configuration of the present invention will be described in detail with the accompanying drawings.

도 1은 본 발명에 의한 이산화탄소 용접토치의 전체 구성도, 도 2는 본 발명에 의한 컨택트 팁의 단면도, 도 3은 본 발명에 의한 컨택트 팁의 요부를 확대한 단면도, 도 4는 전단부가 마모된 종래 컨택트 팁의 단면도이다.1 is an overall configuration diagram of a carbon dioxide welding torch according to the present invention, Figure 2 is a cross-sectional view of the contact tip according to the present invention, Figure 3 is an enlarged cross-sectional view of the main portion of the contact tip according to the present invention, Figure 4 is a shear portion worn A cross sectional view of a conventional contact tip.

본 발명은 용접기의 선단에 접속되어 작업물측으로 이송되는 용접봉을 지지하고, 가스가 분출되도록 하여 용접공정이 이루어지도록 하는 이산화탄소 용접토치(1)의 화염부(6)를 이루는 컨택트 팁(5)에 있어서,The present invention is connected to the tip of the welding machine to support the welding rod to be transported to the workpiece side, to the contact tip (5) forming the flame portion (6) of the carbon dioxide welding torch (1) for the welding process is carried out so that the gas is ejected In

상기 컨택트 팁(5)에 용접봉의 공급을 위해 내부는 관통구멍(11)이 형성되고, 후단부 외주면으로 가스 디퓨저(4)와의 연결을 위한 나사부(12)가 구성되며, Through-hole 11 is formed in the inside for supplying the welding rod to the contact tip 5, the outer end surface of the rear end is composed of a screw portion 12 for connection with the gas diffuser 4,

상기 컨택트 팁(5)의 전단부 내면에 상기 관통구멍(11)보다 직경이 세라믹 링이 삽입홈(13)이 형성되고,In the inner surface of the front end portion of the contact tip 5, a ceramic ring having a diameter larger than that of the through hole 11 is formed in the insertion groove 13,

상기 세라믹 링이 삽입홈(13)에는 용접봉 공급을 위한 구멍(100)이 형성된 세라믹 링(10)이 삽입되며,The ceramic ring is inserted into the groove 13, the ceramic ring 10 is formed with a hole 100 for supplying a welding rod,

상기 컨택트 팁(5)의 전단부를 오므려 컨택트 팁와 일체로 구성된 걸림 테(50)를 형성시켜 세라믹 링(10)을 고정하여 구성한다.The front end of the contact tip 5 is closed to form a locking frame 50 integrally formed with the contact tip to fix the ceramic ring 10.

상기와 같이 구성된 본 발명의 이산화탄소 용접토치용 컨택트 팁에 관한 작용을 살펴보면 다음과 같다.Looking at the operation of the contact tip for a carbon dioxide welding torch of the present invention configured as described above are as follows.

먼저, 이산화탄소 용접토치(1)는 용접라인과 접속되는 몸체부(2)에 가스가 이동하는 가스관(3)이 연결되고, 상기 가스관(3)의 전단부에 인슐레이터(8)와 가스 디퓨저(4)가 구성되고, 상기 가스 디퓨저(4)에 컨택트 팁(5)이 나사 결합되어지고, 상기 가스 디퓨저(4)와 컨택트 팁(5)을 감싸는 노즐(7)이 인슐레이터(8)에 나사 결합되어 구성된다.First, the carbon dioxide welding torch 1 is connected to a gas pipe 3 through which gas moves to a body part 2 connected to a welding line, and an insulator 8 and a gas diffuser 4 at the front end of the gas pipe 3. ), A contact tip (5) is screwed to the gas diffuser (4), and a nozzle (7) surrounding the gas diffuser (4) and the contact tip (5) is screwed to the insulator (8) It is composed.

상기와 같은 구성의 이산화탄소 용접토치(1)에 본 발명에 의한 세라믹 링(10)이 삽입된 컨택트 팁(5)을 연결하여 사용하게 되면 용접작업중 아크에 의한 고열에 지속적으로 노출되는 컨택트 팁(5)의 전단부가 내열성과 내 마모성이 우수한 세라믹 링(10)으로 인해 컨택트 팁(5)의 마모나 용융이 없게 되고, 그로인한 컨택트 팁(5)의 교체없이 지속적인 작업이 가능하게 된다.When the contact tip 5 inserted with the ceramic ring 10 according to the present invention is connected to the carbon dioxide welding torch 1 having the above-described configuration, the contact tip 5 continuously exposed to high heat by an arc during welding operation 5 ), The ceramic ring 10 having excellent heat resistance and wear resistance prevents wear or melting of the contact tip 5, thereby allowing continuous operation without replacing the contact tip 5.

더 구체적으로는 상기와 같은 본 발명에 의한 세라믹 링(10)이 삽입된 컨택트 팁(5)을 연결하여 사용하게 되면 세라믹 링(10)에 형성된 구멍(100)을 통해 용접봉이 공급되면서 용접봉과 모재에 통전이 가능하기 때문에 용접이 원활하게 이루어지게 된다.More specifically, when connecting and using the contact tip 5 is inserted into the ceramic ring 10 according to the present invention as described above, the welding rod and the base material while the welding rod is supplied through the hole 100 formed in the ceramic ring 10 It is possible to conduct electricity to the welding is made smoothly.

상기와 같은 용접작업에서 구멍(100)이 형성된 세라믹 링(10)은 재질적 특성에 의한 내열성과 내 마모성이 우수하기 때문에 오랜기간 사용하여도 마모되지 않게 되므로 용접봉을 항시 정확한 위치에 공급할 수 있다.In the welding operation as described above, the ceramic ring 10 having the hole 100 formed therein is excellent in heat resistance and abrasion resistance due to material properties, so that it may not be worn even after long use, so that the electrode can be always supplied to the correct position.

따라서, 용접을 하고자하는 위치에 정확하게 용접비드를 형성시켜 용접을 할 수 있는 것이다.Therefore, it is possible to weld by forming a weld bead exactly at the position to be welded.

그리고, 세라믹 링의 내부에 형성된 용접봉 공급을 위한 구멍이 관통구멍과 같은 직경으로 형성되었기 때문에 용접봉이 최초 공급될 때 용접봉의 선단이 원활하게 진입될 수 있으며, 특히 컨택트 팁(5)의 전단부를 오므려 컨택트 팁과 같은 재질에 의해서 일체로 구성된 걸림테(50)를 형성시켜 세라믹 링(10)을 고정하였기 때문에 구조적으로 매우 간단하고, 또 세라믹 링이 컨택트 팁과 견고한 고정상태를 유지할 수 있다.In addition, since the hole for supplying the electrode formed in the ceramic ring has the same diameter as the through hole, the tip of the electrode can be smoothly entered when the electrode is initially supplied, and particularly, the front end of the contact tip 5 is lifted. Since the ceramic ring 10 is fixed by forming the hanging frame 50 integrally formed by the same material as the contact tip, the structure is very simple, and the ceramic ring can be firmly fixed with the contact tip.

도 1은 본 발명에 의한 가스 용접토치의 전체 구성도1 is an overall configuration diagram of a gas welding torch according to the present invention

도 2는 본 발명에 의한 컨택트 팁의 단면도2 is a cross-sectional view of a contact tip according to the present invention

도 3은 본 발명에 의한 컨택트 팁의 요부를 확대한 단면도Figure 3 is an enlarged cross-sectional view of the main portion of the contact tip according to the present invention

도 4는 전단부가 마모된 종래 컨택트 팁의 단면도4 is a cross-sectional view of a conventional contact tip with a shear worn out;

*** 도면의 주요부분에 대한 부호의 설명****** Explanation of symbols for main parts of drawing ***

1 : 이산화탄소 용접토치 2 : 몸체부1: carbon dioxide welding torch 2: body

3 : 가스관 4 : 가스 디퓨저3: gas pipe 4: gas diffuser

5 : 컨택트 팁 10 : 세라믹 링5: contact tip 10: ceramic ring

13 : 세라믹 링 삽입홈 50: 걸림테13: ceramic ring insertion groove 50: hook frame

100: 구멍100: hole

Claims (1)

용접봉의 공급을 위해 내부는 관통구멍(11)이 형성되고, 후단부 외주면으로 가스 디퓨저(4)와의 연결을 위한 나사부(12)가 구성되며, 이산화탄소 용접토치(1)의 화염부(6)를 이루는 컨택트 팁(5)에 있어서,Through-hole 11 is formed in the inside for supplying the electrode, and the threaded portion 12 for connection with the gas diffuser 4 is formed at the outer peripheral surface of the rear end, and the flame portion 6 of the carbon dioxide welding torch 1 is formed. In the contact tip 5 to be made, 상기 컨택트 팁(5)의 전단부 내면에 상기 관통구멍(11)보다 직경이 큰 세라믹 링 삽입홈(13)을 형성하여 용접봉이 공급될 수 있게 구멍(100)이 형성된 세라믹 링(10)을 삽입하고, 상기 컨택트 팁(5)의 전단부를 오므려 컨택트 팁와 일체로 구성된 걸림테(50)를 형성시켜 세라믹 링(10)이 고정되게 구성함을 특징으로 하는 이산화탄소 용접토치용 컨택트 팁.The ceramic ring 10 having the hole 100 is inserted into the inner surface of the front end of the contact tip 5 to form a ceramic ring insertion groove 13 having a diameter larger than that of the through hole 11 so that the electrode can be supplied. The contact tip for the carbon dioxide welding torch, characterized in that the ceramic ring (10) is fixed by forming a catching frame (50) integrally formed with the contact tip by closing the front end of the contact tip (5).
KR1020090021593A 2009-03-13 2009-03-13 Contact tip for carbon dioxide welding torch KR101107879B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101706062B1 (en) * 2016-06-03 2017-02-16 정래식 A Gas Welding Contact Tip having Corbon-bar prevented Specter
KR20180065627A (en) * 2016-12-08 2018-06-18 정래식 A Ceramic Welding Contact Tip and Method of fabrication the same

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KR102003435B1 (en) * 2018-08-13 2019-07-24 (주)신우하이테크 contact Tip of welding torch
KR102504775B1 (en) 2022-09-20 2023-02-28 주식회사 동인산업 a torch for an automatic welder
KR20240069952A (en) 2022-11-14 2024-05-21 주식회사 동인산업 a torch for an automatic welder

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JPH08215855A (en) * 1995-02-17 1996-08-27 Ngk Insulators Ltd Contact tip for arc welding
KR100647458B1 (en) * 2005-03-11 2006-11-23 주식회사 동화 티.씨이.에이 A connect-structure of tip and diffuser in gas-welding torch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101706062B1 (en) * 2016-06-03 2017-02-16 정래식 A Gas Welding Contact Tip having Corbon-bar prevented Specter
KR20180065627A (en) * 2016-12-08 2018-06-18 정래식 A Ceramic Welding Contact Tip and Method of fabrication the same

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