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KR20080090686A - Welding device for smooth surfaced defect-less bead - Google Patents

Welding device for smooth surfaced defect-less bead Download PDF

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Publication number
KR20080090686A
KR20080090686A KR1020070033816A KR20070033816A KR20080090686A KR 20080090686 A KR20080090686 A KR 20080090686A KR 1020070033816 A KR1020070033816 A KR 1020070033816A KR 20070033816 A KR20070033816 A KR 20070033816A KR 20080090686 A KR20080090686 A KR 20080090686A
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KR
South Korea
Prior art keywords
welding
bead
welding torch
pressure roller
welding device
Prior art date
Application number
KR1020070033816A
Other languages
Korean (ko)
Inventor
이동대
Original Assignee
현대중공업 주식회사
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Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020070033816A priority Critical patent/KR20080090686A/en
Publication of KR20080090686A publication Critical patent/KR20080090686A/en

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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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0282—Carriages forming part of a welding unit
    • 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

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

A fillet welding device for forming beads having superior property is provided to reduce the amount of air bubbles remaining in the beads by forcibly pressing a bead forming section. A fillet welding device for forming beads having superior property comprises a conveying unit(1) for conveying a welding torch(T) and a press roller(10) fixedly installed in a fixing bracket(1a) of the conveying unit. The press roller is arranged at a rear of the welding torch to press a surface of a bead formed by the welding torch. A length adjustable unit is provided to adjust a distance between the press roller and a surface of a bead forming section. The length adjustable unit includes a guide part(21), a roller fixing part(22), and a fastening bolt(23).

Description

양호한 비드형성을 위한 필렛 용접장치{WELDING DEVICE FOR SMOOTH SURFACED DEFECT-LESS BEAD}Fillet welding device for good bead formation {WELDING DEVICE FOR SMOOTH SURFACED DEFECT-LESS BEAD}

도 1은 기존 필렛 용접 상태도1 is a conventional fillet welding state diagram

도 2는 본 발명에 따른 필렛 용접장치2 is a fillet welding apparatus according to the present invention

도 3은 본 발명에 따른 압착롤러의 단면도3 is a cross-sectional view of the pressing roller according to the present invention

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

(A)(B) : 용접모재(A) (B): Welding base material

(W) : 비드형성부(용접부)(W): Bead forming part (welding part)

(1) : (용접토치)이송장치(1): (welding torch) feeder

(T) : 용접토치(T): welding torch

(10) : 가압롤러(10): Pressing roller

(15) : 길이조정수단(15): Length adjusting means

본 발명은 필렛 용접장치에 관한 것으로, 보다 상세하게는 용접면을 따라 자동 이송하는 용접토치를 통해 형성된 용접의 비드형성부의 형상의 고품질화와, 용접부의 강도를 저하시키는 잔류기포의 생성을 예방할 수 있는 필렛 용접장치에 관한 것이다.The present invention relates to a fillet welding apparatus, and more particularly, to improve the quality of the shape of the bead forming portion of the weld formed through the welding torch that is automatically transferred along the welding surface, and to prevent the generation of residual bubbles that lower the strength of the weld. It relates to a fillet welding device.

선박의 건조에 사용되는 선박 블록 등 대형 구조물의 제작 시, 각종 형강재를 용접하여 제작하게 되는데, 대개 이러한 형강재로 이루어지는 용접모재의 접합면을 용접하게 될 경우에는 대부분 직선을 이루게 되며, 이러한 대형 구조물의 제작을 위한 직선형의 접합면에 필렛 용접은 접합면(용접선)을 추적하며 용접토치(T)를 이송시키는 이송장치를 이용한 자동 용접작업을 수행하게 된다.When manufacturing large structures such as ship blocks used for the construction of ships, various shape steel materials are welded to each other. When welding the joint surfaces of welding base metals made of these steel materials, most of them are straight. Fillet welding on the straight joint surface for the fabrication of the structure is to perform the automatic welding operation using the transfer device to track the joint surface (welding line) and transfer the welding torch (T).

하지만 도 1을 참조하면, 이러한 용접모재의 접합면을 따라 자동 필렛 용접을 수행하는 종래의 용접은 대개 접합면을 따라 자동 이송하는 용접토치(T)를 통해 융착된 비드는 자연 응고되는 과정에서 비드 내에 기포가 잔류됨으로 인해 그 강도를 떨어뜨리는 문제점이 발생되었으며, 특히 이러한 용접 시, 국부적인 발열 및 고전류 용접에서의 아크 용접 특성 상, 아크 아래의 불안정한 용융이 발생됨으로 인해 아크 뒤쪽으로 비드가 완전히 채워지지 못해 오목하게 패는 언더컷과 같은 결함을 발생하기 쉽고, 비드 모양 역시 전체적으로 불균일한 형상을 발생하게 되었다.However, referring to FIG. 1, in the conventional welding which performs the automatic fillet welding along the joint surface of the welding base material, the bead fused through the welding torch T, which is usually automatically transferred along the joint surface, is beaded in the course of natural solidification. The problem of deterioration of the strength due to the remaining bubbles in the bubble was generated. Particularly, in this welding, the beads are completely filled behind the arc due to the unstable melting under the arc due to the arc heating characteristic in the local heating and high current welding. It is easy to produce defects such as undercuts that cannot be concave, and the bead shape is also uneven overall.

본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로, 그 목적은 용접토치를 통해 접합면에 융착된 비드의 응고과정 중, 비드 형성부를 강재로 가압 하여 줌으로서, 비드 내의 기포 잔류량을 감소시키는 등 비드의 품질을 향상시킬 수 있는 용접장치를 제공함에 있다.The present invention is to solve the above-mentioned conventional problems, the object is to press the bead forming portion to the steel during the solidification process of the beads fused to the joint surface through the welding torch, thereby reducing the amount of bubbles remaining in the beads It is to provide a welding device that can improve the quality of the bead.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 본 발명은 용접모재의 접합면을 따라 용접토치를 이동시키는 이송장치를 구비하는 필렛 용접장치에 있어서,The present invention for achieving the object as described above and to eliminate the conventional defects in the fillet welding device having a transfer device for moving the welding torch along the joint surface of the welding base material,

상기 용접토치의 후방에 나란히 배치된 채, 상기 이송장치의 구동을 통해 용접토치와 연동하여 이동하며, 응고과정을 거치는 비드형성부의 표면을 가압하는 적어도 하나 이상의 가압롤러들을 포함함을 특징으로 한다.At least one pressure roller is disposed side by side behind the welding torch and moves in conjunction with the welding torch through the driving of the transfer device, and presses the surface of the bead forming unit undergoing a solidification process.

이하, 본 발명의 실시예를 첨부도면과 연계하여 상세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 필렛 용접장치의 부분 사시도를, 도 3은 본 발명에 따른 압착롤러의 단면상태를 보이는 것으로, 본 발명에 따른 필렛 용접장치는, 용접모재(A)(B)의 접합면을 따라 용접토치(T)를 이송시키는 이송장치(1)에 구비된 고정브래킷(1a)에 설치 고정되어, 이송장치(1)의 이송, 즉 용접토치(T)와 연동 이동하는 가압롤러(10)를 포함하여 구성한다.Figure 2 is a partial perspective view of the fillet welding apparatus according to the present invention, Figure 3 shows a cross-sectional state of the pressing roller according to the present invention, the fillet welding apparatus according to the present invention, the welding of the welding base material (A) (B) The pressure roller which is installed and fixed on the fixed bracket 1a provided in the conveying apparatus 1 for conveying the welding torch T along the surface thereof, which transfers the conveying apparatus 1, that is, interlocks with the welding torch T. 10) including.

가압롤러(10)는, 용접토치(T)의 진행방향에 후방에 나란히 배치되도록 하며, 앞서 선 이동하며 비드를 형성하는 용접토치(T)를 따라 이동하며 형성된 비드의 표 면을 가압하게 된다.The pressure roller 10 is arranged to be parallel to the rear in the advancing direction of the welding torch T, and pressurizes the surface of the formed bead while moving along the welding torch T which previously moves and forms the bead.

또한, 상기 가압롤러(10)는 용접토치(T)의 진행방향과 나란하게 다수개로 구비될 수 있으며, 이때 용접토치(T)와 멀어지는 위치에 배치된 가압롤러일수록 비드형성부(W)의 표면과의 밀착거리를 줄이도록 한다. 즉 이는 용접토치(T)로부터 멀어질수록 계단과 같은 점진적인 가압을 수행함으로서 비드형성부의 안정적인 최종형상을 유도하도록 하는 것이다.In addition, the pressure roller 10 may be provided in plurality in parallel with the traveling direction of the welding torch (T), wherein the pressure roller disposed at a position farther from the welding torch (T), the surface of the bead forming portion (W) Reduce your contact with In other words, this is to induce a stable final shape of the bead forming portion by performing a gradual pressurization such as a step away from the welding torch (T).

이때 도 3에서 보듯이, 본 발명에 따른 가압롤러(15)의 외주연, 즉 비드형성부(W)와 밀착되는 외면은 목적으로 하는 비드형성부(W)의 표면형상과 동일한 형상을 유지하게 된다.At this time, as shown in Figure 3, the outer circumference of the pressure roller 15 according to the present invention, that is the outer surface in close contact with the bead forming portion (W) to maintain the same shape as the surface shape of the target bead forming portion (W) do.

또한, 상기 가압롤러(10)는 응고 과정 중에 있는 비드형성부(W)의 표면과 밀착되는 것으로, 그 표면재질은 SCM440등 압연 롤러용 재질 혹은 세라믹을 권장한다. 세라믹의 경우 고온을 유지하는 비드형성부로부터 열적변화를 줄이고, 소성상태를 유지하는 비드 표면과 가압작용 중 비드가 가압롤러(10)의 표면에 묻어 떨어지는 현상을 방지하도록 한다.In addition, the pressure roller 10 is to be in close contact with the surface of the bead forming portion (W) during the solidification process, the surface material is recommended for the rolling roller material or ceramics such as SCM440. In the case of ceramics, it is possible to reduce the thermal change from the bead forming unit to maintain a high temperature, to prevent the beads from falling on the surface of the pressure roller 10 during the bead surface and the pressing action to maintain the plastic state.

아울러, 바람직하게 이러한 가압롤러(10)는, 용접용 스파타 등의 이물질 제거장치와 롤러의 표면 온도를 일정수준으로 유지할 수 있는 방열판으로 외부를 구성함이 바람직하겠다.In addition, preferably, the pressure roller 10, the foreign matter removal device such as a spatter for welding and the heat sink that can maintain the surface temperature of the roller to a certain level, it is preferable to configure the outside.

한편, 바람직하게 이러한 비드형성부(W)는 일반적으로 용접모재(A)(B)의 사양, 및 용접형태에 따라 비드형성부(W)의 두께, 폭, 너비 등의 최종 형상이 달리 되는 바, 이에 따른 가압롤러(10)가 비드형성부(W)의 표면과의 간격조절을 위한 길이조정수단(15)을 부가 구성하도록 한다.On the other hand, preferably the bead forming portion (W) is generally the final shape of the thickness, width, width, etc. of the bead forming portion (W) according to the specification of the welding base material (A) (B) and the welding shape In this way, the pressure roller 10 is configured to add a length adjusting means 15 for adjusting the gap with the surface of the bead forming portion (W).

즉, 이러한 길이조정수단(15)은, 상기 이송장치에 고정되는 가이드부(21)와, 이 가이드봉(21)내를 슬라이딩 입출하며, 다른쪽 단에 가압롤러(10)을 구비하는 롤러고정부(22), 및 상기 가이드부(21)를 관통하여 그 선단이 롤러고정부(22)의 측면을 가압함으로서 가압롤러(10)를 위치 고정하는 고정볼트(23)로 이루어진다.In other words, the length adjusting means 15 is a roller having a guide portion 21 fixed to the conveying device and a slide in and out of the guide rod 21, and having a pressure roller 10 at the other end. The tip 22 penetrates the top part 22 and the guide part 21 to press the side surface of the roller fixing part 22, and includes a fixing bolt 23 for fixing the pressure roller 10 in position.

상기와 같은 구조의 필렛 용접장치를 통해, 용접토치(T)의 진행과 병행하여 비드형성부(W)의 응고 과정 중, 비드형성부(W)의 표면을 강재 압착하여 줌으로서, 내부에 잔류하는 기포 및 언더컷(under cut), 웜홀(worm hole)과 같은 불량을 방지하는 고품질의 비드형성부(W)를 형성하게 되는 것이다.Through the fillet welding device having the structure as described above, during the solidification process of the bead forming portion (W) in parallel with the progress of the welding torch (T), by pressing the surface of the bead forming portion (W) to a steel material, remaining inside To form a high-quality bead forming portion (W) to prevent defects such as bubbles and under cut (under cut), a worm hole.

본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

상술한 바와 같이 본 발명은 용접부의 규격화된 형상과, 불량용접으로 인한 강도저하를 예방할 수 있는 것이다.As described above, the present invention can prevent the decrease in strength due to the normalized shape of the weld and poor welding.

또한, 용접모재의 사양 및 용접방식 변화에 따른 가압롤러의 가변설치로 인 해, 원하는 비드형상부를 선택적으로 구현할 수 있으며, 더불어 용접불량으로 인해 재차 반복되는 용접 유지보수 작업의 번거로움을 줄일 수 있는 효과가 있다.In addition, due to the variable installation of the pressure roller according to the welding base material specification and welding method changes, it is possible to selectively implement the desired bead shape, and also to reduce the trouble of repeated welding maintenance work due to poor welding. It works.

Claims (3)

용접모재의 접합면을 따라 용접토치를 이동시키는 이송장치를 구비하는 필렛 용접장치에 있어서,A fillet welding device having a transfer device for moving a welding torch along a joining surface of a welding base material, 상기 용접토치의 후방에 나란히 배치된 채, 상기 이송장치의 구동을 통해 용접토치와 연동하여 이동하며, 응고과정을 거치는 비드형성부의 표면을 가압하는 적어도 하나 이상의 가압롤러들을 포함함을 특징으로 하는 양호한 비드형성을 위한 필렛 용접장치.At least one pressure roller is disposed side by side behind the welding torch, the at least one pressure roller moves in conjunction with the welding torch through the driving of the transfer device, and pressurizes the surface of the bead forming unit undergoing a solidification process. Fillet welding device for forming beads. 제1항에 있어서,The method of claim 1, 상기 가압롤러의 표면재질은, 세라믹으로 이루어진 것을 특징으로 하는 양호한 비드형성을 위한 필렛 용접장치.Surface material of the pressure roller, the fillet welding device for forming a good bead, characterized in that made of ceramic. 제1항에 있어서,The method of claim 1, 상기 가압롤러는, 상기 이송장치에 고정되는 가이드부와, 이 가이드봉내를 슬라이딩 입출하는 롤러고정부의 한쪽 단에 회전가능하게 결합된 것으로,The pressure roller is rotatably coupled to one end of the guide portion fixed to the conveying device and the roller fixing portion for sliding in and out the guide rod, 상기 가이드부를 관통하여 그 선단이 롤러고정부의 측면을 가압하여 위치 고정시키는 고정볼트로 이루어진, 길이조정수단을 더 포함함을 특징으로 하는 양호한 비드형성을 위한 필렛 용접장치.The fillet welding device for forming a good bead, characterized in that the front end is made of a fixing bolt for the front end of the fixing means for fixing the position by pressing the side of the roller fixing portion.
KR1020070033816A 2007-04-05 2007-04-05 Welding device for smooth surfaced defect-less bead KR20080090686A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101116020B1 (en) * 2009-09-24 2012-02-13 부경대학교 산학협력단 Device for forming back bead and welding apparatus having the same
KR200472189Y1 (en) * 2012-07-03 2014-04-17 현대중공업 주식회사 Torch for arc welding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101116020B1 (en) * 2009-09-24 2012-02-13 부경대학교 산학협력단 Device for forming back bead and welding apparatus having the same
KR200472189Y1 (en) * 2012-07-03 2014-04-17 현대중공업 주식회사 Torch for arc welding

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