WO2015053592A1 - Ceramic backing material for minimizing back gouging during backside back gouging for removing cracks in first layer welding portion of one side flux cored arc welding, and butt welding method using same - Google Patents

Ceramic backing material for minimizing back gouging during backside back gouging for removing cracks in first layer welding portion of one side flux cored arc welding, and butt welding method using same Download PDF

Info

Publication number
WO2015053592A1
WO2015053592A1 PCT/KR2014/009546 KR2014009546W WO2015053592A1 WO 2015053592 A1 WO2015053592 A1 WO 2015053592A1 KR 2014009546 W KR2014009546 W KR 2014009546W WO 2015053592 A1 WO2015053592 A1 WO 2015053592A1
Authority
WO
WIPO (PCT)
Prior art keywords
welding
backing material
ceramic
gouging
weld
Prior art date
Application number
PCT/KR2014/009546
Other languages
French (fr)
Korean (ko)
Inventor
구창용
Original Assignee
주식회사 마바
구창용
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 마바, 구창용 filed Critical 주식회사 마바
Publication of WO2015053592A1 publication Critical patent/WO2015053592A1/en

Links

Images

Classifications

    • 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
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
    • 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
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
    • B23K9/0356—Seam welding; Backing means; Inserts with backing means disposed under the seam the backing means being a tape or strip
    • 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
    • B23K37/06—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for positioning the molten material, e.g. confining it to a desired area
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
    • B23K2103/52—Ceramics
    • 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

Definitions

  • the present invention is a back gouging for backside gouging for crack removal of the first layer welding of FUXWRED ARC WELDING (FCAW) used to overlap welding twice in order to increase the welding strength during ship construction.
  • FCAW FUXWRED ARC WELDING
  • the present invention relates to a ceramic backing material for minimizing and a butt welding method using the same. More specifically, a convex part for blocking a lower portion of a weld groove is formed on an upper surface of a ceramic backing material attached to and installed below the welded portion, and the ceramic backing material is formed below the welded portion.
  • the secondary welding is performed after the gouging operation to remove the superficial cracks in the recess formed by the convex portion with the ceramic backing material removed.
  • the removal depth was deep To minimize the gouging work to improve the productivity for the welding work.
  • the conventional ceramic backing material 10 and the welding method using the ceramic backing material, as shown in Figure 1 is arranged to maintain the spacing for butt welding two iron plates (welding base material: 1), this
  • the spacing is referred to as a weld groove 6, and the recessed bead groove 12, which is attached to the ceramic backing material 10 below the weld groove 6, is formed concave on the upper surface of the ceramic backing material 10 is welded. Attach to the groove (6).
  • the ceramic backing material 10 is formed in the center of the upper surface of the ceramic support hole 11 is formed of a ceramic material to form a concave bead groove 12 is supported corresponding to the weld portion groove 6, this ceramic support hole
  • An aluminum tape 14 is attached to surround both side surfaces and the bottom surface of the 11, and both sides of the aluminum tape 14 extend in the shape of a wing to the outside to form a ceramic backing material on the bottom surfaces of both welding base materials 1. 10) can be attached to (a) of FIG.
  • the weld body welded with the two welding base materials 1 is turned upside down or raised, or the operator moves to the protrusion bead 2a side so that the lower face bead 2a and the operator easily face each other. To work.
  • a gouging operation is performed on the bottom protruding beads 2a to remove the bottom protruding beads 2a.
  • the gouging groove 3 is formed at the position where the protruding bead 2a is removed.
  • the present invention is to solve the above problems, after forming a convex portion corresponding to the weld groove in the upper surface of the ceramic backing material attached to the lower portion of the weld, and after the primary welding in the state that the ceramic backing material attached to the lower portion of the weld When the ceramic backing material is removed, a recess corresponding to the convex portion is automatically formed on the bottom surface of the weld metal, so that a small amount of gouging operation is formed in the concave portion.
  • the gouging operation is minimized, and as a result, it is a technical problem to improve productivity by forming a small amount of unnecessary weld metal due to excessive backside bead formation.
  • the present invention for achieving the above object, is to be attached to the back of the weld between the two welded base material arranged in a butt form, the ceramic support for supporting the lower portion of the weld, and the ceramic support is welded below the weld
  • the base support portion is formed on both sides of the ceramic support port, the upper surface is formed so that the convex portions corresponding to the weld groove of the weld portion protrudes, the upper surface of both sides of the convex portion Formed base support portion is characterized in that it is formed to be inclined.
  • the butt welding method using the ceramic backing material includes a ceramic support hole supporting the butt welded portion below and an upper portion of the ceramic support hole of the ceramic backing material composed of aluminum tape attaching the ceramic support to the bottom surface of the welding base material below the weld portion.
  • the concave portion corresponding to the convex portion is automatically formed on the bottom of the weld metal formed by primary welding, as the convex portion having the width of the weld groove is formed on the upper surface of the ceramic backing material. It minimizes the gouging work, which had previously had to remove many weld metals by gouging, which improves the productivity of welding work, and pollutes the environment and harms the workers' health by minimizing gouging work. There is an effect that does not cause problems.
  • the gouging operation depth is lowered than when the convex lower surface protrusion bead is removed. Work time, personnel, and power costs are reduced.
  • FIGS. 2A to 2D are explanatory views showing a ceramic backing material of the present invention and a welding process using the ceramic backing material.
  • Figure 3 (a) (b) is a cross-sectional view showing that the upper surface of the ceramic supporter included in the present invention is inclined.
  • 5 is a process chart showing the working method of the present invention.
  • the ceramic backing material 10 is attached to the bottom of the welded portion between the two welding base material (1) arranged in a butt shape, as shown in Figures 2 to 4, the ceramic supporting the lower portion of the weld It consists of the support opening 11 and the aluminum tape 14 which attaches the ceramic support opening 11 to the bottom face of the welding base material 1 below a welding part.
  • the convex part 15 is formed to protrude on the upper surface of the ceramic support 11 corresponding to the weld part groove 6 of the weld part.
  • the shape of the convex portion 15 as shown in (a) to (d) of FIG. 4 reveals that it is possible to form in various forms such as trapezoidal, triangular, square, and rounded.
  • the base support portion 13 formed on both sides of the convex portion 15 of the ceramic support 11 may be formed to be inclined upwardly, or may be formed to be inclined downwardly. This is to match the height of the upper surface of the two welding base material (1) for butt welding, not only the flat shape of the welding base material (1) to be butt welding, but also the welding base material supported by the base support (13)
  • the shape of 1) is to support the welding base material 1 of various shapes such as inclined, concave or convex.
  • the ceramic support hole 11 supporting the butt weld portion and the aluminum tape attaching the ceramic support hole 11 to the bottom surface of the welding base material 1 below the weld portion (
  • the shape of the convex portion 15 can be formed in various forms such as trapezoidal, triangular, square, rounded, and the like as shown in (a) to (d) of FIG.
  • the convex portions 15 are welded grooves between the two welding base materials 1 as shown in FIG. Step 2 of attaching the ceramic backing material 10 to the bottom of the welded portion to be inserted into (6) is performed.
  • the adhesive face of the aluminum tape 14 is removed. Naturally, it is attached to the bottom of the welding base material 1.
  • the weld part 1 between the two weld base materials 1 is welded through the weld groove 6 having the upper side opened. Carry out the third step 103 of the welding.
  • the welding product generated by performing the primary welding is filled in the weld groove 6 while being supported by the convex portion 15 below the weld groove 6, and when the primary welding work on the portion is stopped, the weld As the water is naturally solidified, the weld metal 2 is firmly coupled to the welding base metal 1 on both sides.
  • the fourth step 104 is a ceramic backing material after the weld metal 2 welded in the third step 103 is naturally cooled. 10) separating and removing the bottom of the weld.
  • the convex part 15 is convexly formed to protrude upward in the center of the upper surface of the ceramic base 11 of the ceramic backing material 10. Accordingly, the concave portion 5 is formed at the bottom of the weld metal 2 corresponding to the convex portion 15.
  • the recessed part 5 is made by the simple operation which removes the used ceramic backing material 10 after carrying out the primary welding in the state which attached the ceramic backing material 10 which formed the convex part 15 to the bottom of a welding part. ) Is naturally formed, the fifth step 105 of gouging the recess 5 is performed.
  • the gouging operation performed in the fifth step 105 as described above is to make the recesses 5 smoothly formed by the convex portions 15 of the ceramic backing material 10 to form rough grooves to be subsequently executed. It is firmly bonded to the secondary weld metal (4) by welding and the weld metal fixedly formed by primary welding, and is carried out to remove hot cracks generated in the first layer.
  • the gouging operation performed in the step 105 is the welding metal (B) by the convex portion 15 protruding convexly as shown in (a) (b) and 6 (b) of FIG.
  • the gouging operation is performed to be deeper in the concave portion 5, so that the conventional gouging removal portion shown in (a) of FIG.
  • the gouging removing portion 16b becomes smaller, so that the amount of removal is greatly reduced.
  • step 106 After the gouging operation is performed in the fifth step 105 as described above, the secondary welding is performed in the concave which is deeper and rougher than the fifth step 105 of gouging the concave part 5 by the gouging operation. Perform step 6 of step 106.
  • the weld between the two welding base material (1), the weld metal (2) formed by the primary welding and the secondary formed by the secondary welding The weld metal (4) is to greatly increase the strength of the welded portion is to be able to manufacture the ship structure firmly.
  • the present invention is a ceramic backing material for minimizing the back gouging during the back gouging to remove cracks on one side FCAW (FLUX CORED ARC WELDING) superlayer weld used to overlap welding twice in order to increase the welding strength during ship construction and
  • FCAW FLUX CORED ARC WELDING
  • the invention relates to a butt welding method using the same.

Abstract

The present invention relates to a ceramic backing material for minimizing back gouging during backside back gouging for removing cracks in the first layer welding portion of a one side flux cored arc welding (FCAW), which is used for double overlap welding so as to enhance the welding strength in shipbuilding, and a butt welding method using the same. More specifically, the present invention is capable of improving welding productivity by forming a convex portion on the top surface of the ceramic backing material attached to the lower part of the welding portion, the convex portion having a width as wide as the recess of the welding portion, and performing, in a state where the ceramic backing material is attached to the lower part of the welding portion, a gouging operation to remove hot cracks occurring after the first welding, thereby removing a very little amount of the backside bead on the bottom surface that is formed recessively on the lower side of the welding portion after the first welding so that the gouging operation for forming an enhancement recess is minimized and an artificial recess facilitating gouging operation is formed.

Description

일면 플럭스 코어드 아크 용접의 초층 용접부 균열 제거를 위한 이면 백가우징시 백가우징 최소화를 위한 세라믹 백킹재 및 그를 이용한 맞대기 용접방법Ceramic backing material for minimizing back gouging in back side gouging for crack removal of first layer welds in one side flux cored arc welding and butt welding method using the same
본 발명은 선박 건조 시에 용접강도 증대를 위하여 2회에 걸쳐 겹쳐지게 용접을 하는데 사용되는 일면 플럭스 코어드 아크 용접(FCAW: FLUX CORED ARC WELDING)의 초층 용접부 균열 제거를 위한 이면 백가우징시 백가우징 최소화를 위한 세라믹 백킹재 및 그를 이용한 맞대기 용접방법에 관한 것으로, 더욱 상세하게는 용접부의 하방에 부착 설치하는 세라믹 백킹재의 상면에 용접부홈의 하부를 막는 볼록부를 형성하고, 그 세라믹 백킹재를 용접부 하방에 부착한 상태로 1차용접한 뒤에, 세라믹 백킹재를 제거한 상태에서 볼록부에 의해 형성되는 오목부에 초층 균열 제거를 위하여 가우징 작업 후 2차용접을 실시함으로써, 종래에 1차용접 후에 용접부의 하측에 볼록하게 형성되는 하면돌출비드를 제거하여 가우징홈을 형성할 때, 제거깊이가 깊었던 것에 비하여 가우징작업이 최소화되게 하여 용접작업에 대한 생산성을 향상시킬 수 있도록 하기 위한 것이다.The present invention is a back gouging for backside gouging for crack removal of the first layer welding of FUXWRED ARC WELDING (FCAW) used to overlap welding twice in order to increase the welding strength during ship construction. The present invention relates to a ceramic backing material for minimizing and a butt welding method using the same. More specifically, a convex part for blocking a lower portion of a weld groove is formed on an upper surface of a ceramic backing material attached to and installed below the welded portion, and the ceramic backing material is formed below the welded portion. After the primary welding in the state of attachment to the welding, the secondary welding is performed after the gouging operation to remove the superficial cracks in the recess formed by the convex portion with the ceramic backing material removed. When removing the lower surface protruding bead formed convexly on the lower side to form the gouging groove, the removal depth was deep To minimize the gouging work to improve the productivity for the welding work.
근래에 건조되는 선박은 철판들 간의 용접을 양면에 걸쳐 겹쳐지게 용접을 하여 용접부에 대한 용접강도가 증대되게 용접작업을 시행하고 있는데, 이와 같은 양면에 걸친 용접을 하기 위한 세라믹 백킹재와 그 세라믹 백킹재를 이용한 용접방법은 도 1에 도시된 바와 같다.In recent years, ships that have been built are welded to overlap welds on both sides of the steel plates to increase welding strength.The ceramic backing material and its ceramic backing are used for welding on both sides. Welding method using the ash is as shown in FIG.
즉, 종래의 세라믹 백킹재(10)와 그 세라믹 백킹재를 이용한 용접방법은, 도 1에서 보는 바와 같이 2개의 철판(용접모재:1)을 맞대기 용접하기 위하여 간격을 유지하게 배치되게 되는데, 이 간격을 용접부홈(6)이라고 칭하며, 이 용접부홈(6)의 하방에 세라믹 백킹재(10)를 부착하되, 세라믹 백킹재(10)의 상면에 오목하게 형성되는 오목비드홈(12)이 용접부홈(6)에 대응되게 부착한다.That is, the conventional ceramic backing material 10 and the welding method using the ceramic backing material, as shown in Figure 1, is arranged to maintain the spacing for butt welding two iron plates (welding base material: 1), this The spacing is referred to as a weld groove 6, and the recessed bead groove 12, which is attached to the ceramic backing material 10 below the weld groove 6, is formed concave on the upper surface of the ceramic backing material 10 is welded. Attach to the groove (6).
상기 세라믹 백킹재(10)는 세라믹 소재로 형성되는 세라믹받침구(11)의 상면 가운데에 용접쇳물이 받쳐지는 오목비드홈(12)이 용접부홈(6)과 대응되게 형성되며, 이 세라믹받침구(11)의 양측면과 저면을 감싸도록 알루미늄테이프(14)를 부착하되, 이 알루미늄테이프(14)의 양측은 외측방으로 날개형태로 연장 형성되어 양측 용접모재(1)의 저면에 세라믹 백킹재(10)를 도 1의 (가)와 부착할 수 있게 된다.The ceramic backing material 10 is formed in the center of the upper surface of the ceramic support hole 11 is formed of a ceramic material to form a concave bead groove 12 is supported corresponding to the weld portion groove 6, this ceramic support hole An aluminum tape 14 is attached to surround both side surfaces and the bottom surface of the 11, and both sides of the aluminum tape 14 extend in the shape of a wing to the outside to form a ceramic backing material on the bottom surfaces of both welding base materials 1. 10) can be attached to (a) of FIG.
이 상태에서 도 1의 (가),(나)와 같이 양측 용접모재(1) 사이의 용접부를 1차로 용접하게 되면, 용접봉과 용접모재(1)의 용접부가 용해되면서 형성되는 용접쇳물이 용접부홈(6)에 채워지는데, 용접부홈(6)의 하방에는 오목비드홈(12)을 형성한 세라믹받침구(11)가 부착되어 있음에 따라 용해된 용접쇳물이 세라믹받침구(11)에 받쳐지면서 용접부홈(6)을 채워지게 되며, 그 용접부에 대한 용접작업이 정지되면, 용접쇳물이 응고되면서 형성되는 용착금속(2)에 의해 양측 용접모재(1)가 용접으로 결합되게 된다.In this state, as shown in (a) and (b) of FIG. 1, when the welding portion between the two welding base materials 1 is primarily welded, the weld metal is formed while the welding portion of the welding rod and the welding base material 1 is dissolved. 6 is filled in, the welded molten metal is supported by the ceramic support 11 as the ceramic support 11 is formed below the weld groove 6 is formed a recessed bead 12. The weld groove 6 is filled, and when the welding operation for the weld is stopped, the welding base metal 1 on both sides is joined by welding by the welding metal 2 formed while the weld metal solidifies.
그 다음에 도 1의 (나),(다)에서 보는 바와 같이 세라믹 백킹재(10)를 용접부 하방에서 제거하게 되면, 용착금속(2)의 하면은 세라믹받침구(11)의 오목비드홈(12)에 대응되게 하면돌출비드(2a)가 하측으로 돌출 형성되어 있게 된다.Then, as shown in (b) and (c) of FIG. 1, when the ceramic backing material 10 is removed below the welded portion, the lower surface of the weld metal 2 is recessed bead groove of the ceramic support 11. When it corresponds to 12, the protruding bead 2a is formed to protrude downward.
이 상태에서 작업여건에 따라 하면돌출비드(2a)와 작업자가 용이하게 대면하도록 2개의 용접모재(1)를 용접한 용접체를 뒤집거나, 세우거나, 또는 작업자가 하면돌출비드(2a) 측으로 이동하는 등의 작업을 거친다.In this state, depending on the working conditions, the weld body welded with the two welding base materials 1 is turned upside down or raised, or the operator moves to the protrusion bead 2a side so that the lower face bead 2a and the operator easily face each other. To work.
그 뒤에는 도 1의 (다),(라)에서 보는 바와 같이 하면돌출비드(2a)에 대하여 가우징(gauging) 작업을 실시하여 하면돌출비드(2a)를 제거하게 되면, 가우징 작업을 실시하는 과정에서 하면돌출비드(2a)가 제거된 자리에 가우징홈(3)이 형성되게 된다.After that, as shown in Fig. 1 (a) and (d), a gouging operation is performed on the bottom protruding beads 2a to remove the bottom protruding beads 2a. In the process, the gouging groove 3 is formed at the position where the protruding bead 2a is removed.
위와 같이 형성되는 가우징홈(3)에 도 1의 (마)와 같이 2차용접을 실시함에 따라 양측 용접모재(1)의 사이에는 1차용접에 의해 결합 형성되는 용착금속(2)과, 2차용접에 의해 결합 형성되는 2차용착금속(4)이 이중으로 겹쳐지게 형성되어 용접부에 대한 결함을 방지하여 용접 품질을 향상시키게 되는 것이다.Welding metal (2) and 2 formed by the primary welding between the two welding base material (1) by performing secondary welding in the gouging groove (3) formed as described above as shown in Fig. 1 (e), 2 Secondary welding metal 4 is formed by the secondary welding is formed to overlap the double to prevent the defects on the weld to improve the welding quality.
그러나, 이는 용착금속(2)의 하방에 하향 돌출되게 형성되는 하면돌출비드(2a)를 제거하기 위한 가우징작업을 필히 실시해야 하므로, 하측으로 볼록하게 돌출되었던 하면돌출비드(2a)는 상측으로 오목하게 가우징홈(3)을 형성하게 되므로 도 6의 (가)와 같이 가우징작업에 의한 가우징제거부(16a)의 제거량이 많아져서 작업시간과, 인력, 전력, 비용이 추가로 소요됨에 따라 생산성이 저하되는 문제뿐만 아니라, 가우징 작업과정에서 발생되는 금속 분진과, 소음에 의해 작업자의 건강을 해치는 것은 물론이고, 환경을 오염시키는 등의 심각한 문제를 지니고 있었다.However, since this must be performed a gouging operation for removing the lower surface projecting bead (2a) formed to protrude downwardly below the weld metal (2), the lower surface projecting bead (2a) protruded convexly downward Since the concave gouging groove 3 is formed, the amount of removal of the gouging removing portion 16a due to the gouging operation increases as shown in FIG. 6A, and thus additional work time, manpower, power, and cost are required. In addition to the problem of deterioration in productivity, there were serious problems such as polluting the environment as well as damaging the health of workers by metal dust and noise generated during the gouging process.
본 발명은 상기의 문제점을 해결하기 위한 것으로서, 용접부의 하방에 부착 설치하는 세라믹 백킹재의 상면에 용접부홈에 대응되는 볼록부를 형성하고, 그 세라믹 백킹재를 용접부 하방에 부착한 상태로 1차용접한 뒤에 세라믹 백킹재를 제거하게 되면, 용착금속의 저면에 볼록부에 대응하는 오목부가 자동으로 형성됨에 따라, 그 오목부에 가우징작업을 조금만 해도 가우징홈이 형성되어 종래에 실시하던 가우징 작업보다 본 발명에서는 가우징작업이 최소화되게 되며, 그것으로 인하여 과도한 이면 비드 형성에 따른 불필요한 용착 금속을 작게 형성시킴에 따라 생산성을 향상시키는 것을 기술적 과제로 한다.The present invention is to solve the above problems, after forming a convex portion corresponding to the weld groove in the upper surface of the ceramic backing material attached to the lower portion of the weld, and after the primary welding in the state that the ceramic backing material attached to the lower portion of the weld When the ceramic backing material is removed, a recess corresponding to the convex portion is automatically formed on the bottom surface of the weld metal, so that a small amount of gouging operation is formed in the concave portion. In the present invention, the gouging operation is minimized, and as a result, it is a technical problem to improve productivity by forming a small amount of unnecessary weld metal due to excessive backside bead formation.
상기의 목적을 달성하기 위한 본 발명은, 본 발명은 맞대기 형태로 배치되는 2개의 용접모재 사이의 용접부 이면에 부착 설치되는 것으로, 용접부 하방을 받쳐주는 세라믹받침구와, 세라믹받침구를 용접부 하방의 용접모재 저면에 부착하는 알루미늄테이프로 구성되는 세라믹 백킹재에 있어서, 상기 세라믹받침구의 양측에는 모재지지부가 형성되며, 상면에는 용접부의 용접부홈에 대응되는 볼록부가 돌출되게 형성되고, 상기 볼록부의 양측 상면에 형성되는 모재지지부가 경사지게 형성되는 것을 특징으로 한다.The present invention for achieving the above object, the present invention is to be attached to the back of the weld between the two welded base material arranged in a butt form, the ceramic support for supporting the lower portion of the weld, and the ceramic support is welded below the weld In the ceramic backing material composed of an aluminum tape attached to the bottom surface of the base material, the base support portion is formed on both sides of the ceramic support port, the upper surface is formed so that the convex portions corresponding to the weld groove of the weld portion protrudes, the upper surface of both sides of the convex portion Formed base support portion is characterized in that it is formed to be inclined.
또한, 세라믹 백킹재를 이용한 맞대기 용접방법은, 맞대기 용접부의 하방을 받쳐주는 세라믹받침구와, 세라믹받침구를 용접부 하방의 용접모재 저면에 부착하는 알루미늄테이프로 구성되는 세라믹 백킹재의 세라믹받침구 상면 가운데에 세라믹받침구의 전후 전길이에 걸쳐 볼록부가 형성되는 세라믹 백킹재를 준비하는 1단계와, 볼록부가 2개의 용접모재 사이의 용접부홈으로 삽입되게 세라믹 백킹재를 용접부 저면에 부착하는 2단계와, 양측 용접모재 사이의 용접부에 1차용접을 하는 3단계와, 상기 3단계에서 용접한 용착금속이 자연 냉각된 뒤에 세라믹 백킹재를 용접부 저면에서 분리 제거하는 4단계와, 상기 4단계에서 세라믹 백킹재를 제거하여 형성되는 오목부에 가우징작업을 실시하는 5단계와, 상기 가우징 작업된 오목부에 2차용접을 실시하는 6단계가 포함되는 것을 특징으로 한다.In addition, the butt welding method using the ceramic backing material includes a ceramic support hole supporting the butt welded portion below and an upper portion of the ceramic support hole of the ceramic backing material composed of aluminum tape attaching the ceramic support to the bottom surface of the welding base material below the weld portion. 1 step of preparing a ceramic backing material in which the convex portion is formed over the front and rear lengths of the ceramic base, 2 steps of attaching the ceramic backing material to the bottom of the welding portion so that the convex portion is inserted into the weld groove between the two welding base materials, and both sides welding 3 steps of primary welding to the welding part between the base materials, 4 steps of separating and removing the ceramic backing material from the bottom of the welding part after the weld metal welded in the 3 step is naturally cooled, and removing the ceramic backing material in the step 4 5 steps of gouging the concave formed in the concave portion, and secondary welding to the gouged concave Six steps are included.
이상에서 살펴본 바와 같은 본 발명은, 세라믹 백킹재 상면에 용접부홈 만큼의 폭을 가지는 볼록부를 형성를 형성함에 따라 1차용접으로 형성되는 용착금속의 저면에 볼록부에 대응하는 오목부가 자동으로 형성됨에 따라 종래에 많은 용착금속을 가우징으로 제거해야 했던 가우징작업을 최소화하게 되어 용접작업에 대한 생산성이 향상되는 효과와, 가우징작업을 최소화함에 따라 작업자의 건강을 해치게 하던 문제와 환경을 오염시키는 등의 문제를 유발시키지 않게 되는 효과가 있는 것이다.According to the present invention as described above, the concave portion corresponding to the convex portion is automatically formed on the bottom of the weld metal formed by primary welding, as the convex portion having the width of the weld groove is formed on the upper surface of the ceramic backing material. It minimizes the gouging work, which had previously had to remove many weld metals by gouging, which improves the productivity of welding work, and pollutes the environment and harms the workers' health by minimizing gouging work. There is an effect that does not cause problems.
또한, 본 발명에서는 오목부에 가우징작업을 하게 됨에 따라 종래의 하측으로 볼록한 하면돌출비드를 제거할 때보다 가우징작업 깊이가 낮아지게 되어 가우징 작업량이 감축되어 가우징 작업이 용이해 이를 위한 작업시간,인력,전력 비용절감 되는 효과가 있는 것이다.In addition, in the present invention, as the gouging operation is performed in the concave portion, the gouging operation depth is lowered than when the convex lower surface protrusion bead is removed. Work time, personnel, and power costs are reduced.
도 1의 (가) 내지 (마)는 종래의 세라믹 백킹재와, 그 세라믹 백킹재를 이용한 용접과정을 나타내는 설명도.1 (a) to (e) are explanatory views showing a conventional ceramic backing material and a welding process using the ceramic backing material.
도 2의 (가) 내지 (라)는 본 발명의 세라믹 백킹재와, 그 세라믹 백킹재를 이용한 용접과정을 나타내는 설명도.2A to 2D are explanatory views showing a ceramic backing material of the present invention and a welding process using the ceramic backing material.
도 3의 (가)(나)는 본 발명에 포함되는 세라믹받침구의 상면이 경사지게 형성된 것을 나타내는 단면도.Figure 3 (a) (b) is a cross-sectional view showing that the upper surface of the ceramic supporter included in the present invention is inclined.
도 4의 (가) 내지 (라)는 본 발명에 포함되는 세라믹받침구에 형성되는 볼록부(15)의 각종 다른 예를 나타내는 단면도.4 (a) to (d) are cross-sectional views showing various other examples of the convex portion 15 formed in the ceramic support sphere included in the present invention.
도 5는 본 발명의 작업방법을 나타내는 공정도.5 is a process chart showing the working method of the present invention.
도 6의 (가)(나)는 종래방법에서의 가우징제거부와 본 발명에서의 가우징제거부의 제거량을 비교하는 비교도면.6 (a) and (b) are comparative drawings comparing the amount of removal of the gouging portion in the conventional method and the gouging portion in the present invention.
이하, 본 발명에 따른 맞대기용접용 세라믹 백킹재 및 그를 이용한 맞대기 용접방법에 대하여 첨부된 도면 도 2 내지 도 6을 참고하여 설명하면 다음과 같다.Hereinafter, the butt welding ceramic backing material and the butt welding method using the same according to the present invention will be described with reference to the accompanying drawings.
먼저, 본 발명에 따른 세라믹 백킹재(10)는 도 2 내지 도 4에서 보는 바와 같이 맞대기 형태로 배치되는 2개의 용접모재(1) 사이의 용접부 저면에 부착 설치되는 것으로, 용접부 하방을 받쳐주는 세라믹받침구(11)와, 세라믹받침구(11)를 용접부 하방의 용접모재(1) 저면에 부착하는 알루미늄테이프(14)로 구성된다.First, the ceramic backing material 10 according to the present invention is attached to the bottom of the welded portion between the two welding base material (1) arranged in a butt shape, as shown in Figures 2 to 4, the ceramic supporting the lower portion of the weld It consists of the support opening 11 and the aluminum tape 14 which attaches the ceramic support opening 11 to the bottom face of the welding base material 1 below a welding part.
상기 용접부의 용접부홈(6)에 대응되는 세라믹받침구(11)의 상면에 볼록부(15)가 돌출되게 형성되는 구성이 포함된다. The convex part 15 is formed to protrude on the upper surface of the ceramic support 11 corresponding to the weld part groove 6 of the weld part.
이때, 상기 볼록부(15)의 형상은 도 4의 (가) 내지 (라)에서 보는 바와 같이 사다리꼴형, 삼각형, 사각형, 라운딩형 등과 같은 다양 형태로의 형성이 가능함을 밝혀둔다.At this time, the shape of the convex portion 15 as shown in (a) to (d) of FIG. 4 reveals that it is possible to form in various forms such as trapezoidal, triangular, square, and rounded.
그리고, 도 3의 (가)(나)에서 보는 바와 같이 세라믹받침구(11)의 볼록부(15) 양측에 형성되는 모재지지부(13)를 상측으로 경사지게 형성하거나, 또는 하측으로 경사지게 형성할 수 있는데, 이는 맞대기용접을 하는 양측 용접모재(1)의 상면높이를 맞추기 위한 것으로, 맞대기 용접을 하고자 하는 용접모재(1)의 형상이 평평한 것뿐만 아니라, 모재지지부(13)에 지지되는 용접모재(1)의 형상이 경사진 것, 오목하거나 볼록한 것 등과 같이 다양한 형상의 용접모재(1)를 받칠 수 있게 하는 것이다.And, as shown in (a) (b) of FIG. 3, the base support portion 13 formed on both sides of the convex portion 15 of the ceramic support 11 may be formed to be inclined upwardly, or may be formed to be inclined downwardly. This is to match the height of the upper surface of the two welding base material (1) for butt welding, not only the flat shape of the welding base material (1) to be butt welding, but also the welding base material supported by the base support (13) The shape of 1) is to support the welding base material 1 of various shapes such as inclined, concave or convex.
다음은 세라믹 백킹재를 이용한 맞대기 용접방법에 대한 설명으로서, 이는 도 2 및 도 5를 참고하여 설명하기로 한다.The following is a description of a butt welding method using a ceramic backing material, which will be described with reference to FIGS. 2 and 5.
세라믹 백킹재를 이용한 맞대기 용접방법은, 첫 번째로 맞대기 용접부의 하방을 받쳐주는 세라믹받침구(11)와, 세라믹받침구(11)를 용접부 하방의 용접모재(1) 저면에 부착하는 알루미늄테이프(14)로 구성되는 세라믹 백킹재(10)의 세라믹받침구(11) 상면 가운데에 세라믹받침구(11)의 전후 전길이(전후 폭)에 걸쳐 볼록부(15)가 형성되는 세라믹 백킹재(10)를 준비하는 1단계(101)를 수행한다.In the butt welding method using the ceramic backing material, first, the ceramic support hole 11 supporting the butt weld portion and the aluminum tape attaching the ceramic support hole 11 to the bottom surface of the welding base material 1 below the weld portion ( The ceramic backing material 10 having the convex portion 15 formed on the front and rear lengths (front and rear widths) of the ceramic support holes 11 in the center of the upper surface of the ceramic support holes 11 of the ceramic backing material 10 constituted by the ceramic backing material 10. Perform step 1 101 of preparing).
이때, 볼록부(15)의 형상은 도 4의 (가) 내지 (라)에서 보는 바와 같이 사다리꼴형, 삼각형, 사각형, 라운딩형 등과 같은 다양 형태로의 형성할 수 있는 것이다.At this time, the shape of the convex portion 15 can be formed in various forms such as trapezoidal, triangular, square, rounded, and the like as shown in (a) to (d) of FIG.
상기와 같이 상면에 볼록부(15)를 형성한 세라믹 백킹재(10)를 준비한 뒤에는, 도 2의 (나)에서 보는 바와 같이 볼록부(15)가 2개의 용접모재(1) 사이의 용접부홈(6)으로 삽입되게 세라믹 백킹재(10)를 용접부 저면에 부착하는 2단계(102)를 수행하는데, 세라믹 백킹재(10)를 용접부 저면에 부착할 때, 알루미늄테이프(14)의 점착면을 용접모재(1)의 저면에 부착하는 것은 당연한 것이다.After preparing the ceramic backing material 10 having the convex portions 15 formed on the upper surface as described above, the convex portions 15 are welded grooves between the two welding base materials 1 as shown in FIG. Step 2 of attaching the ceramic backing material 10 to the bottom of the welded portion to be inserted into (6) is performed. When the ceramic backing material 10 is attached to the bottom of the welded portion, the adhesive face of the aluminum tape 14 is removed. Naturally, it is attached to the bottom of the welding base material 1.
위와 같이 용접부 저면에 세라믹 백킹재(10)을 부착한 뒤에는 도 2의 (가)(나)에서 보는 바와 같이 상측이 개구된 용접부홈(6)를 통하여 양측 용접모재(1) 사이의 용접부에 1차용접을 하는 3단계(103)를 수행한다.After attaching the ceramic backing material 10 to the bottom of the weld as described above, as shown in FIG. 2 (a) (b), the weld part 1 between the two weld base materials 1 is welded through the weld groove 6 having the upper side opened. Carry out the third step 103 of the welding.
이렇게 1차용접을 실시하여 발생하는 용접쇳물이 용접부홈(6) 하측의 볼록부(15)에 받쳐지면서 용접부홈(6)에 채워지게 되며, 그 부분에 대한 1차용접작업이 멈춰지면, 용접쇳물이 자연 응고되면서 고착되어 양측 용접모재(1)를 견고하게 결합하는 용착금속(2)이 형성되게 된다.The welding product generated by performing the primary welding is filled in the weld groove 6 while being supported by the convex portion 15 below the weld groove 6, and when the primary welding work on the portion is stopped, the weld As the water is naturally solidified, the weld metal 2 is firmly coupled to the welding base metal 1 on both sides.
위와 같이 3단계(103)를 거친 뒤에는 4단계(104)를 수행하게 되는데, 이 4단계(104)는 상기 3단계(103)에서 용접한 용착금속(2)이 자연 냉각된 뒤에 세라믹 백킹재(10)를 용접부 저면에서 분리 제거하는 단계이다.After the third step 103, as described above, the fourth step 104 is performed. The fourth step 104 is a ceramic backing material after the weld metal 2 welded in the third step 103 is naturally cooled. 10) separating and removing the bottom of the weld.
이렇게 4단계(104)에서 세라믹 백킹재(10)를 분리 제거하게 되면, 세라믹 백킹재(10)의 세라믹받침구(11) 상면 가운데에 볼록부(15)가 상향 돌출되게 볼록하게 형성되어 있음에 따라 볼록부(15)에 대응되는 용착금속(2)의 저면에는 오목부(5)가 형성되게 된다.When the ceramic backing material 10 is separated and removed in the fourth step 104, the convex part 15 is convexly formed to protrude upward in the center of the upper surface of the ceramic base 11 of the ceramic backing material 10. Accordingly, the concave portion 5 is formed at the bottom of the weld metal 2 corresponding to the convex portion 15.
이와 같이 볼록부(15)를 형성한 세라믹 백킹재(10)를 용접부 저면에 부착 한 상태에서 1차용접을 실시한 뒤에 사용을 마친 세라믹 백킹재(10)를 제거하는 간편한 작업에 의해 오목부(5)가 자연적으로 형성된 뒤에는 그 오목부(5)를 가우징작업을 하는 5단계(105)를 수행한다.Thus, the recessed part 5 is made by the simple operation which removes the used ceramic backing material 10 after carrying out the primary welding in the state which attached the ceramic backing material 10 which formed the convex part 15 to the bottom of a welding part. ) Is naturally formed, the fifth step 105 of gouging the recess 5 is performed.
위와 같은 5단계(105)에서 실행하는 가우징작업은 세라믹 백킹재(10)의 볼록부(15)에 의해 매끈하게 형성되는 오목부(5)를 거칠게 홈을 형성하게 하여 추후에 실행하는 2차용접에 의한 2차용착금속(4)과 1차용접에 의해 고착 형성된 용착금속과 견고하게 결합되며, 초층에 발생하는 고온 균열(hot crack)을 제거하기 위하여 실시한다.The gouging operation performed in the fifth step 105 as described above is to make the recesses 5 smoothly formed by the convex portions 15 of the ceramic backing material 10 to form rough grooves to be subsequently executed. It is firmly bonded to the secondary weld metal (4) by welding and the weld metal fixedly formed by primary welding, and is carried out to remove hot cracks generated in the first layer.
이때, 5단계(105)에서 실시하는 가우징작업은 도 2의 (가)(나)와 도 6의 (나)에서 보는 바와 같이 상면이 볼록하게 돌출된 볼록부(15)에 의해 용착금속(2)의 저면에 상측으로 오목한 오목부(5)가 형성된 상태에서 그 오목부(5)에 조금 더 깊어지도록 가우징작업을 실시하게 되므로, 도 6의 (가)에 도시된 종래의 가우징제거부(16a) 보다 본 발명에서는 도 6의 (나)에서 보는 바와 같이 가우징제거부(16b)가 작아져서 그 만큼 제거량이 대폭 감축되게 되는 것이다. At this time, the gouging operation performed in the step 105 is the welding metal (B) by the convex portion 15 protruding convexly as shown in (a) (b) and 6 (b) of FIG. In the state where the concave portion 5 concave upward is formed on the bottom of 2), the gouging operation is performed to be deeper in the concave portion 5, so that the conventional gouging removal portion shown in (a) of FIG. In the present invention, as shown in (b) of FIG. 6, the gouging removing portion 16b becomes smaller, so that the amount of removal is greatly reduced.
위와 같은 5단계(105)에서 가우징작업을 실행하고 난 뒤에는 가우징작업에 의해 오목부(5)를 가우징작업하는 5단계(105)보다 더 깊어지고 표면이 거칠게 형성된 오목부에 2차용접을 실시하는 6단계(106)를 실시한다.After the gouging operation is performed in the fifth step 105 as described above, the secondary welding is performed in the concave which is deeper and rougher than the fifth step 105 of gouging the concave part 5 by the gouging operation. Perform step 6 of step 106.
위와 같은 6단계(106)의 2차용접을 실시함에 따라 2개의 용접모재(1) 사이의 용접부에는 1차용접에 의해 고착 형성된 용착금속(2)과, 2차용접에 의해 고착 형성되는 2차용착금속(4)에 의해 용접부의 강도가 대폭 증대되게 되어 선박 구조물을 견고하게 제작할 수 있게 되는 것이다.According to the secondary welding of the six steps (106) as described above, the weld between the two welding base material (1), the weld metal (2) formed by the primary welding and the secondary formed by the secondary welding The weld metal (4) is to greatly increase the strength of the welded portion is to be able to manufacture the ship structure firmly.
본 발명은 선박 건조 시에 용접강도 증대를 위하여 2회에 걸쳐 겹쳐지게 용접을 하는데 사용되는 일면 FCAW(FLUX CORED ARC WELDING) 초층 용접부 균열 제거를 위한 이면 백가우징시 백가우징 최소화를 위한 세라믹 백킹재 및 그를 이용한 맞대기 용접방법에 관한 것으로 산업상 이용 가능한 발명이다.The present invention is a ceramic backing material for minimizing the back gouging during the back gouging to remove cracks on one side FCAW (FLUX CORED ARC WELDING) superlayer weld used to overlap welding twice in order to increase the welding strength during ship construction and The invention relates to a butt welding method using the same.

Claims (2)

  1. 맞대기 형태로 배치되는 2개의 용접모재 사이의 용접부 저면에 부착 설치되는 것으로, 용접부 하방을 받쳐주는 세라믹받침구와, 세라믹받침구를 용접부 하방의 용접모재 저면에 부착하는 알루미늄테이프로 구성되는 세라믹 백킹재에 있어서,On the ceramic backing material which is attached to the bottom of the welded part between the two welded base materials arranged in the butt shape, and is composed of a ceramic support hole for supporting the lower side of the welded part and an aluminum tape for attaching the ceramic support to the bottom of the welded base material under the welded part. In
    상기 세라믹받침구의 양측에는 모재지지부가 형성되며, 상면에는 용접부의 용접부홈에 대응되는 볼록부가 돌출되게 형성되고,The base support part is formed on both sides of the ceramic support opening, and the convex part corresponding to the weld part groove of the welding part is formed to protrude from the upper surface.
    상기 볼록부의 양측 상면에 형성되는 모재지지부가 경사지게 형성되는 것을 특징으로 하는 일면 플럭스 코어드 아크 용접의 초층 용접부 균열 제거를 위한 이면 백가우징시 백가우징 최소화를 위한 세라믹 백킹재.The ceramic backing material for minimizing the back gouging during the back-side gouging for crack cracking of the first layer flux cored arc welding, characterized in that the base support portion formed on both sides of the convex portion is inclined.
  2. 맞대기 용접부의 하방을 받쳐주는 세라믹받침구와, 세라믹받침구를 용접부 하방의 용접모재 저면에 부착하는 알루미늄테이프로 구성되는 세라믹 백킹재의 세라믹받침구 상면 가운데에 세라믹받침구의 전후 전길이에 걸쳐 볼록부가 형성되는 세라믹 백킹재를 준비하는 1단계와, Convex portions are formed in the center of the top and bottom of the ceramic support hole in the center of the ceramic support hole of the ceramic backing material composed of a ceramic support hole supporting the bottom of the butt weld portion and an aluminum tape attaching the ceramic support hole to the bottom surface of the welding base material below the weld portion. 1 step of preparing a ceramic backing material,
    볼록부가 2개의 용접모재 사이의 용접부홈으로 삽입되게 세라믹 백킹재를 용접부 저면에 부착하는 2단계와,Attaching the ceramic backing material to the bottom of the welded portion such that the convex portion is inserted into the welded groove between the two welded base materials;
    양측 용접모재 사이의 용접부에 1차용접을 하는 3단계와,3 steps of primary welding to the weld between the two welding base metal,
    상기 3단계에서 용접한 용착금속이 자연 냉각된 뒤에 세라믹 백킹재를 용접부 저면에서 분리 제거하는 4단계와,A fourth step of separating and removing the ceramic backing material from the bottom of the weld part after the weld metal welded in step 3 is naturally cooled;
    상기 4단계에서 세라믹 백킹재를 제거하여 형성되는 오목부에 가우징작업을 실시하는 5단계와,Step 5 for gouging the recess formed by removing the ceramic backing material in the step 4,
    상기 가우징작업된 오목부에 2차용접을 실시하는 6단계가 포함되는 것을 특징으로 하는 일면 플럭스 코어드 아크 용접의 초층 용접부 균열 제거 이면 백가우징 최소화를 위한 세라믹 백킹재를 이용한 맞대기 용접방법.Butt welding method using a ceramic backing material for minimizing the back gouging of the first layer weld cracks of the one-side flux-cored arc welding, characterized in that the second step of performing the second welding in the gouged concave.
PCT/KR2014/009546 2013-10-11 2014-10-10 Ceramic backing material for minimizing back gouging during backside back gouging for removing cracks in first layer welding portion of one side flux cored arc welding, and butt welding method using same WO2015053592A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20130121413A KR101423617B1 (en) 2013-10-11 2013-10-11 Ceramic backing material and butt welding method using it
KR10-2013-0121413 2013-10-11

Publications (1)

Publication Number Publication Date
WO2015053592A1 true WO2015053592A1 (en) 2015-04-16

Family

ID=51743094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2014/009546 WO2015053592A1 (en) 2013-10-11 2014-10-10 Ceramic backing material for minimizing back gouging during backside back gouging for removing cracks in first layer welding portion of one side flux cored arc welding, and butt welding method using same

Country Status (2)

Country Link
KR (1) KR101423617B1 (en)
WO (1) WO2015053592A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106001864A (en) * 2016-07-28 2016-10-12 山东大学 Welding method of molybdenum-copper alloy and iron-based high-temperature alloy and application
CN106392156A (en) * 2016-10-21 2017-02-15 江苏振光电力设备制造有限公司 Efficient back chipping and back-off machine
CN110449706A (en) * 2019-08-21 2019-11-15 无锡市创新低温环模设备科技有限公司 A kind of aluminum alloy piping welding bead formed on back protective device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102533398B1 (en) 2016-09-08 2023-05-19 대우조선해양 주식회사 Method for single SAW welding
KR102625068B1 (en) * 2019-02-21 2024-01-16 한화오션 주식회사 Weld metal having excellent impact toughness at low temperature and welding method for forming it
KR102228438B1 (en) 2020-04-23 2021-03-15 양희동 Submerged arc welding device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07299564A (en) * 1994-05-09 1995-11-14 Sakai Tekkosho:Kk Welding method
JPH08281485A (en) * 1995-04-14 1996-10-29 Ishikawajima Harima Heavy Ind Co Ltd Backing strip device for butt joint welding
KR20100006434U (en) * 2008-12-16 2010-06-24 정무수 Baking Materials for Welding Having Arc Generation Portion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07299564A (en) * 1994-05-09 1995-11-14 Sakai Tekkosho:Kk Welding method
JPH08281485A (en) * 1995-04-14 1996-10-29 Ishikawajima Harima Heavy Ind Co Ltd Backing strip device for butt joint welding
KR20100006434U (en) * 2008-12-16 2010-06-24 정무수 Baking Materials for Welding Having Arc Generation Portion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106001864A (en) * 2016-07-28 2016-10-12 山东大学 Welding method of molybdenum-copper alloy and iron-based high-temperature alloy and application
CN106001864B (en) * 2016-07-28 2018-09-25 山东大学 A kind of welding method and the application of molybdenum-copper and iron-base superalloy
CN106392156A (en) * 2016-10-21 2017-02-15 江苏振光电力设备制造有限公司 Efficient back chipping and back-off machine
CN110449706A (en) * 2019-08-21 2019-11-15 无锡市创新低温环模设备科技有限公司 A kind of aluminum alloy piping welding bead formed on back protective device

Also Published As

Publication number Publication date
KR101423617B1 (en) 2014-07-28

Similar Documents

Publication Publication Date Title
WO2015053592A1 (en) Ceramic backing material for minimizing back gouging during backside back gouging for removing cracks in first layer welding portion of one side flux cored arc welding, and butt welding method using same
WO2018196251A1 (en) Method for vertical electrogas welding at oblique position
US20190105728A1 (en) Aluminum alloy to steel welding process
CN104625357A (en) H-steel or T-steel full-penetration back-gouging-free welding method
CN104646803B (en) Low alloy steel plate and the welding method of ship plate
ATE411866T1 (en) METHOD FOR WELDING TWO ALUMINUM WORKPIECES
CN112296494B (en) Welding flux copper gasket method submerged-arc welding method for jointed boards with different thicknesses
CN106112224B (en) Steel construction U-shaped floor angle welding full penetration technique
CN103692061A (en) Butt-welding method using dual-gun automatic horizontal welding bogie
CN111331227B (en) 50000m3Flip-chip method of CO from the following storage tank2Automatic welding process and device
CN110253120A (en) Lincoln weld welded corner joint technique and the welding tooling used
CN102554403A (en) Method for preparing stainless steel jointed board for shipbuilding
KR101453354B1 (en) Conbined Welding Method of Electro Gas Welding and Flux Cored Arc Welding
CN104028880B (en) Welding process method of aluminum profile car hook plate
US9764410B2 (en) Submerged arc welding method for steel plate
CN106891081A (en) A kind of vertical corner connection double-wire automatic welding connects method
CN106826087B (en) A kind of Large Container Ship crack arrest steel construction method
CN104511682A (en) Method of single-gun single-wire vertical electrogas welding
CN109623096B (en) Narrow gap welding fixture unit and narrow gap welding method for electrolytic aluminum steel claw
CN107857191A (en) A kind of frock for the big part of duplicate rows car handling and preparation method thereof
CN102922158A (en) Special ship welding method
JPH1029091A (en) Flat one side gas shielded metal arc welding method
CN210306407U (en) Auxiliary device for welding all-position welding trolley
RU2505385C1 (en) Method of argon arc welding by nonconsumable electrode
CN202984875U (en) V-shaped angle joint welding pad

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14852246

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14852246

Country of ref document: EP

Kind code of ref document: A1