KR20090062727A - One-sided welding method of butt welding joint - Google Patents

One-sided welding method of butt welding joint Download PDF

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Publication number
KR20090062727A
KR20090062727A KR1020070130147A KR20070130147A KR20090062727A KR 20090062727 A KR20090062727 A KR 20090062727A KR 1020070130147 A KR1020070130147 A KR 1020070130147A KR 20070130147 A KR20070130147 A KR 20070130147A KR 20090062727 A KR20090062727 A KR 20090062727A
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South Korea
Prior art keywords
welding
butt
joint
butt joint
backing material
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KR1020070130147A
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Korean (ko)
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윤광희
김진용
이희근
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대우조선해양 주식회사
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Priority to KR1020070130147A priority Critical patent/KR20090062727A/en
Publication of KR20090062727A publication Critical patent/KR20090062727A/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
    • B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
    • B23K28/02—Combined welding or cutting procedures or apparatus
    • 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
    • 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
    • B23K9/18—Submerged-arc welding
    • 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
    • B23K9/235—Preliminary treatment

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

Abstract

A one-side welding method of butt welding joint is provided to remove the need of a wide space at the rear side of the butt joint by not performing attachment/detachment of a backing material. A one-side welding method of butt welding joint comprises a step of melting a root face using plasma arc welding and forming a rear weld bead(12) without attaching a backing material to the rear side of a butt welding joint material(11) having a V-shaped groove with the root face of 1~4mm, and a step of completing the one-side welding of the butt joint by using submerged arc welding with high deposition rate. Therefore, there is no need to turn over a welding object and attach/detach the backing material.

Description

용접 맞대기 이음의 일면 용접방법{One-sided welding method of butt welding joint} One-sided welding method of butt welding joint}

본 발명은 용접 맞대기 이음의 일면 용접방법에 관한 것이다. 더욱 상세하게는 플라즈마 아크 용접을 이용하여 이면 용접비드를 형성하고, 서브머지드 아크용접을 이용하여 용접을 완료하는 일면 용접방법에 관한 것이다. The present invention relates to a method for welding one side of a weld butt joint. More specifically, the present invention relates to a one-side welding method of forming a back welding bead using plasma arc welding and completing the welding using submerged arc welding.

일반적으로, 두 부재의 용접은 양면에서 용접하는 양면용접과 일면에서만 용접하는 일면용접으로 나눠어진다. 양면용접은 양면용접 중 처음 일면 용접의 최초 용접층에 용접품질이 불량하여 반드시 제거해야 하는 단점이 있고, 또한 모재 또는 구조물을 뒤집어야 하는 단점이 있으므로 일면용접이 널리 이용되고 있다.In general, welding of two members is divided into double-sided welding welding on both sides and single-sided welding welding on only one side. Double-sided welding has a disadvantage in that the first welding layer of the first one-sided welding of the double-sided welding is poor in quality and must be removed, and also has the disadvantage of inverting the base material or structure, one-sided welding is widely used.

상기의 일면 용접법은 모재의 배면에 용융금속의 용락을 막아주는 세라믹 백킹제를 부착시킨 후 통전되는 용접와이어를 하강시켜 모재와의 사이에서 아크를 형성시킴으로써 모재를 용접하게 된다.The above one-side welding method attaches a ceramic backing agent that prevents melting of molten metal on the back surface of the base material, and then welds the base material by lowering the energized welding wire to form an arc between the base material.

주로 선박 건조에 사용되는 용접법은 플럭스코어드 아크 용접법(Flux Cored Wire Arc Welding: FCAW)과 서브머지드 아크 용접법(Submerged Arc Welding: SAW)이 있다. 플럭스코어드 아크 용접법은 고온의 아크 빛이 방출되어 작업자의 건강에 해롭고 전류의 통전 능력에 한계가 있고 용착량이 서브머지드 아크 용접법보다 낮은단점이 있다.The welding methods mainly used for ship construction include Flux Cored Wire Arc Welding (FCAW) and Submerged Arc Welding (SAW). Fluxcored arc welding method is disadvantageous in that high temperature arc light is emitted, which is detrimental to worker's health, current carrying capacity is limited, and deposition amount is lower than submerged arc welding method.

상기 서브머지드 아크 용접법은 모재의 접합부에 입상의 용제, 즉 플럭스를 도포하고 서브머지드 아크 용접용 와이어를 연속 공급하면서 와이어와 모재 사이에 아크를 발생시켜 그 열로 모재를 용접하는 방법으로 아크 빛이 외부로 노출되지 않고 높은 용착량 얻어 용접시간을 단축시키는 용접법이다.In the submerged arc welding method, an arc light is generated by applying a granular solvent, ie, flux to a joint of a base material, generating an arc between the wire and the base material while continuously supplying a wire for submerged arc welding, and welding the base material with the heat. It is a welding method that shortens the welding time by obtaining a high deposition amount without being exposed to the outside.

도 1 및 도 2는 종래 기술에 따른 맞대기 용접이음의 양면 용접방법과 일면용접 과정을 나타낸 공정순서도이다.1 and 2 is a process flow chart showing a double-sided welding method and one-side welding process of the butt welded joint according to the prior art.

도 1을 살펴보면, X자형 개선형상을 가진 부재(1)의 양면용접방법을 나타낸 공정도로서 먼저 부재(1) 상부에 전면 용접(2)을 완료한다(도 1a 및 도 1b 참조).Referring to FIG. 1, a process diagram showing a double-sided welding method of a member 1 having an X-shaped improved shape, first, the front welding 2 is completed on the upper part of the member 1 (see FIGS. 1A and 1B).

그리고 나서, 상기 부재(1)를 뒤집은 다음(도 1c 참조), 용접결함 생성을 방지하기 위해 전면 최초 용접부의 하단부를 가우징으로 제거(3)한 후(도 1d 참조) 이면 용접(4)을 실시하여 완료한다(도 1e 참조).Then, the member 1 is turned upside down (see FIG. 1C), then the lower end of the front initial weld portion is removed by gouging (3) (see FIG. 1D) to prevent weld defects from being generated. To complete (see FIG. 1E).

도 2를 살펴보면, V자형 개선형상을 가진 부재(1)의 일면용접방법을 나타낸 공정도로서 먼저 최초 용접의 용락을 방지하기 위해 부재(1)의 이면에 백킹재(5)를 부착한다(도 2a 및 도 2b 참조).Referring to FIG. 2, a process diagram showing a one-side welding method of a member 1 having a V-shaped improved shape, first, a backing material 5 is attached to the back surface of the member 1 in order to prevent melting of the initial welding (FIG. 2A). And FIG. 2B).

그리고 나서, 두 부재의 용접(2)을 완료한 후 백킹재(5)를 제거하게 된다(도 2c 참조).Then, after the welding 2 of the two members is completed, the backing material 5 is removed (see FIG. 2C).

도 1 및 도 2에 도시된 바와 같이, 상기의 양면용접은 양면용접 중 처음 전면 용접의 최초 용접층에 용접품질이 불량하여 반드시 제거해야 하고, 일면 용접된 모재 또는 구조물을 뒤집어야 하므로 제작공장의 높이가 높고 안전 위험이 있으며, 뒤집기 위한 대기시간 및 부재 재배열을 위한 시간이 소요되어 작업시간이 늘어나는 단점이 있었다.As shown in Fig. 1 and 2, the double-sided welding of the double-sided welding, the first welding layer of the first front welding of the welding quality is poor and must be removed, and the one side welded base material or structure must be reversed There is a disadvantage that the height is high, there is a safety risk, and the work time is increased due to the waiting time for flipping and the time for rearranging the members.

반면, 상기의 일면용접은 부재의 이면에 용융금속의 용락을 막아주기 위해 용접 전후에 백킹재를 탈/부착해야 하므로 용접부재 이면에 작업공간이 확보되어야 하고 이에 따른 설비가 갖춰져야 하며, 위보기 자세로 백킹재를 탈부착해야 하므로 작업자의 근골격계 위험이 있는 단점이 있었다.On the other hand, the one-side welding is required to remove / attach the backing material before and after welding in order to prevent the molten metal from melting on the back side of the member, so a working space must be secured on the back side of the welding member, and the equipment must be equipped accordingly. Since the backing material must be attached and detached, there was a disadvantage that there is a risk of the musculoskeletal system of the worker.

상기와 같이 일면용접와 양면용접의 단점을 해결할 수 있는 용접법으로 백킹재의 부착없이 일면 용접이 가능한 플라즈마 아크 용접과 레이저 용접과 전자빔 용접이 있다. As described above, there is a welding method that can solve the disadvantages of one-side welding and two-side welding, and there are plasma arc welding, laser welding, and electron beam welding, which enables one-side welding without attachment of a backing material.

상기의 플라즈마 아크 용접은 적용 가능한 두께가 10mm로 제한되어 있으며, 상기의 레이저 용접은 적용 가능한 두께는 30mm이나 장비가 매우 고가이고, 레이저빔의 위험성이 있어 제한된 공간에만 적용해야만 했었다. 그리고, 상기의 전자빔 용접은 150mm까지 용접이 가능하나, 용접부 주위가 고진공 상태가 되어야 하므로 현실적으로 대량 생산은 불가능한 단점이 있었다.The plasma arc welding is limited to 10mm applicable thickness, the laser welding is 30mm applicable thickness, but the equipment is very expensive, there is a risk of laser beam had to be applied only in limited space. In addition, the electron beam welding can be welded up to 150mm, but since the surroundings of the weld portion must be in a high vacuum state, there is a disadvantage in that mass production is impossible.

이에, 본 발명은 상기한 문제점을 해결하기 위한 것으로서 본 발명은 두 부재의 맞대기 용접이음에 있어서 V자형의 개선형상으로 하여 이면비드형성은 플라즈마 아크 용접으로 백킹재 없이 이면비드를 형성한 후, 서브머지드 아크 용접을 이용하여 채움 용접을 완료함으로써 용접부재의 뒤집기와 이면 백킹재의 탈/부착 공정을 제거하여 용접방법의 효율성을 향상시키는 데 그 목적이 있다. Accordingly, the present invention is to solve the above problems, the present invention is to improve the shape of the V-shaped in the butt weld joint of the two members, the back bead formation is the plasma arc welding after forming the back bead without the backing material, sub The purpose of the present invention is to improve the efficiency of the welding method by completing the filling welding using the merged arc welding, thereby eliminating the inversion of the welding member and the detachment / attachment of the backing material.

상기한 본 발명의 목적을 달성하기 위한 기술적 사상으로서 본 발명에 의하면, 두 부재의 용접 맞대기 이음의 일면 용접방법에 있어서, 루트면이 1 ~ 4mm 인 V자형의 개선형상을 갖는 용접 맞대기 이음 모재(11)의 이면에 백킹재를 부착하지 않고, 플라즈마 아크용접을 이용하여 루트면이 충분히 용융되고 이면용접비드(12)가 형성되도록 하는 단계; 및 용착량이 높은 서브머지드 아크 용접을 이용하여 플라즈마 아크 용접과 개별 또는 일체로 용접(13)하여 맞대기 이음의 일면 용접을 완료하는 단계를 포함하는 것을 특징으로 하는 용접 맞대기 이음의 일면 용접방법을 제시한다.According to the present invention as a technical idea for achieving the above object of the present invention, in the one-side welding method of the welding butt joint of two members, the weld butt joint base material having a V-shaped improved shape of the root surface of 1 ~ 4mm ( Without backing material attached to the back surface of 11), by using plasma arc welding, the root surface is sufficiently melted and the back welding bead 12 is formed; And welding one side of the butt joint by individually or integrally welding 13 with plasma arc welding using submerged arc welding having a high deposition amount. do.

이상에서와 같이 본 발명에 따르면, 두 부재의 용접맞대기 이음에 있어서 맞대기 이음의 이면에 위보기 자세로 수행해야 하는 백킹재의 탈/부착이 필요없어 백킹재의 탈/부착에 따른 맞대기이음 이면의 넓은 공간확보가 필요 없게 된다.As described above, according to the present invention, there is no need for detachment / attachment of the backing material to be performed in the above posture of the butt joint in the butt joint of the two members, so that a large space on the back of the butt joint due to the detachment / attachment of the backing material is required. There is no need to secure.

또한, 본 발명은 작업자의 근골격계 위험이 없이 용접을 완료함으로써 용접의 효율성을 향상시킬 수 있다. In addition, the present invention can improve the efficiency of welding by completing the welding without the risk of the musculoskeletal system of the operator.

이하, 본 발명의 실시 예에 대한 구성 및 그 작용을 첨부한 도면을 참조하면서 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

도 3은 본 발명에 따른 용접 맞대기 이음의 일면 용접방법을 나타낸 공정순서도이다. Figure 3 is a process flow chart showing a one-side welding method of the weld butt joint according to the present invention.

도 3을 살펴보면, 본 발명은 루트면이 1 ~ 4mm 인 V자형의 개선형상을 가진 용접 맞대기 이음 모재(11)의 이면에 백킹재를 부착하지 않고, 플라즈마 아크용접을 이용하여 루트면이 충분히 용융되고 이면용접비드(12)가 형성되도록 한다(도 3a 및 도 3b 참조).Referring to FIG. 3, the present invention does not attach a backing material to the back surface of the weld butt joint base material 11 having a V-shaped improved root surface of 1 to 4 mm, and the root surface is sufficiently melted using plasma arc welding. And the back welding bead 12 is formed (see FIGS. 3A and 3B).

그리고 나서, 용착량이 높은 서브머지드 아크 용접을 이용하여 플라즈마 아크 용접과 개별로 또는 일체로 용접(13)하여 맞대기 이음의 일면 용접을 완료한다(도 3c 참조). Subsequently, the welding of the butt joint is completed by welding 13 individually or integrally with plasma arc welding using submerged arc welding with a high deposition amount (see FIG. 3C).

즉, 본 발명은 루트면을 1 ~ 4mm로 하는 V자형의 개선형상을 이용하여 이면비드형성은 플라즈마 아크 용접으로 하고, 채움 용접은 용착량이 높은 서브머지드 아크 용접으로 하며, 상기 플라즈마 아크 용접과 서브머지드 아크 용접을 개별로 또는 일체로 하여 용접이음의 용접을 완료함으로써 용접부재의 뒤집기와 이면 백킹재 탈부착 공정을 제거하여 용접방법의 효율성을 향상시킬 수 있다.In other words, the present invention uses a V-shaped improved shape having a root surface of 1 to 4 mm to form a backside bead by plasma arc welding, and a fill welding to be a submerged arc welding with a high deposition amount. Submerged arc welding can be performed individually or integrally to complete the welding of the welded joint, thereby eliminating the inversion of the welding member and the back-backing material detachment process, thereby improving the efficiency of the welding method.

따라서, 본 발명은 두 부재의 용접 맞대기 이음에 있어서 맞대기 이음의 이면에 위보기 자세로 수행해야 하는 백킹재의 탈/부착이 필요 없어 백킹재의 탈/부착에 따른 맞대기 이음 이면의 넓은 공간확보가 필요 없게 된다.Therefore, the present invention does not need to remove / attach the backing material to be performed in the above position on the back side of the butt joint in the weld butt joint of the two members, so that there is no need to secure a large space behind the butt joint according to the removal / attachment of the backing material. do.

상술한 바와 같이, 본 발명의 바람직한 실시 예로서 용접 맞대기 이음의 일면 용접방법에 대해 설명하였으나, 본 발명은 상술한 특정의 바람직한 실시 예에 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 기술적 범위 내에 포함된다 할 수 있다.As described above, the one-side welding method of the welding butt joint as a preferred embodiment of the present invention has been described, but the present invention is not limited to the specific preferred embodiment described above, it departs from the gist of the invention claimed in the claims Without this, any person having ordinary skill in the art to which the present invention pertains can make various modifications, and such changes can be included within the technical scope of the claims.

도 1 및 도 2는 종래 기술에 따른 맞대기 용접이음의 양면 용접방법과 일면용접 과정을 나타낸 공정순서도이다.1 and 2 is a process flow chart showing a double-sided welding method and one-side welding process of the butt welded joint according to the prior art.

도 3은 본 발명에 따른 용접 맞대기 이음의 일면 용접방법을 나타낸 공정순서도이다. Figure 3 is a process flow chart showing a one-side welding method of the weld butt joint according to the present invention.

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

11: 모재 12: 이면용접비드11: Base metal 12: Back welding bead

13: 용접 13: welding

Claims (2)

두 부재의 용접 맞대기 이음의 일면 용접방법에 있어서,In one side welding method of welding butt joint of two members, 루트면이 1 ~ 4mm 인 V자형의 개선형상을 갖는 용접 맞대기 이음 모재(11)의 이면에 백킹재를 부착하지 않고, 플라즈마 아크용접을 이용하여 루트면이 충분히 용융되고 이면용접비드(12)가 형성되도록 하는 단계; 및The root surface is sufficiently melted using plasma arc welding, and the back surface welding bead 12 does not adhere to the back surface of the weld butt joint substrate 11 having a V-shaped improved root surface having a root surface of 1 to 4 mm. To be formed; And 용착량이 높은 서브머지드 아크 용접을 이용하여 플라즈마 아크 용접과 일체로 용접(13)하여 맞대기 이음의 일면 용접을 완료하는 단계를 포함하는 것을 특징으로 하는 용접 맞대기 이음의 일면 용접방법.And welding (13) integrally with plasma arc welding to complete one side of the butt joint by using submerged arc welding with a high deposition amount. 제 1 항에 있어서, 상기 서브머지드 아크 용접을 이용하여 플라즈마 아크 용접과 개별로 용접(13)을 실시하는 것을 특징으로 하는 용접 맞대기 이음의 일면 용접방법.A method as claimed in claim 1, characterized in that welding (13) is performed separately from plasma arc welding using the submerged arc welding.
KR1020070130147A 2007-12-13 2007-12-13 One-sided welding method of butt welding joint KR20090062727A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101985190A (en) * 2010-12-08 2011-03-16 西安优耐特容器制造有限公司 Method for welding steel substrate layers of zirconium steel compound slabs
CN102019513A (en) * 2010-11-12 2011-04-20 杭州锅炉集团股份有限公司 Thick metal plate back gouging-free welding groove technology and machining process
KR20140012292A (en) * 2012-07-19 2014-02-03 현대중공업 주식회사 Method for electron beam welding without backing plate
CN103659012A (en) * 2013-11-29 2014-03-26 大连船舶重工集团有限公司 Efficient combined welding technological method for large and thick plates
CN105643066A (en) * 2016-03-31 2016-06-08 广船国际有限公司 Thick-plate single-side welding method
KR101676188B1 (en) * 2015-09-21 2016-11-15 주식회사 포스코 Method and apparatus for vertical welding
WO2023277463A1 (en) * 2021-06-30 2023-01-05 현대로보틱스 주식회사 System for automatically manufacturing steel frame

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102019513A (en) * 2010-11-12 2011-04-20 杭州锅炉集团股份有限公司 Thick metal plate back gouging-free welding groove technology and machining process
CN101985190A (en) * 2010-12-08 2011-03-16 西安优耐特容器制造有限公司 Method for welding steel substrate layers of zirconium steel compound slabs
CN101985190B (en) * 2010-12-08 2012-08-01 西安优耐特容器制造有限公司 Method for welding steel substrate layers of zirconium steel compound slabs
KR20140012292A (en) * 2012-07-19 2014-02-03 현대중공업 주식회사 Method for electron beam welding without backing plate
CN103659012A (en) * 2013-11-29 2014-03-26 大连船舶重工集团有限公司 Efficient combined welding technological method for large and thick plates
CN103659012B (en) * 2013-11-29 2015-08-26 大连船舶重工集团有限公司 A kind of large slab efficient combination welding technique
KR101676188B1 (en) * 2015-09-21 2016-11-15 주식회사 포스코 Method and apparatus for vertical welding
CN105643066A (en) * 2016-03-31 2016-06-08 广船国际有限公司 Thick-plate single-side welding method
WO2023277463A1 (en) * 2021-06-30 2023-01-05 현대로보틱스 주식회사 System for automatically manufacturing steel frame

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