KR20090116879A - The weaving width regulator of submerged arc welding wire - Google Patents

The weaving width regulator of submerged arc welding wire Download PDF

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Publication number
KR20090116879A
KR20090116879A KR1020080042672A KR20080042672A KR20090116879A KR 20090116879 A KR20090116879 A KR 20090116879A KR 1020080042672 A KR1020080042672 A KR 1020080042672A KR 20080042672 A KR20080042672 A KR 20080042672A KR 20090116879 A KR20090116879 A KR 20090116879A
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KR
South Korea
Prior art keywords
weaving
weaving width
welding wire
width adjusting
submerged arc
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KR1020080042672A
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Korean (ko)
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윤광희
김진용
손영석
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대우조선해양 주식회사
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Priority to KR1020080042672A priority Critical patent/KR20090116879A/en
Publication of KR20090116879A publication Critical patent/KR20090116879A/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
    • 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
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/0216—Seam profiling, e.g. weaving, multilayer
    • 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
    • B23K9/022—Welding by making use of electrode vibrations
    • 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
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/30—Vibrating holders for electrodes

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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 weaving width regulator of submerged arc welding wire is provided to improve welding workability by regulating the weaving width of a welding wire in real time. CONSTITUTION: A weaving width regulator of submerged arc welding wire comprises a weaving motor, rotary disk(68), rack gear(11), and spur gear(12). The weaving width regulator additionally comprises a locking member(13), weaving width adjusting unit(100), bearing, and guide bar(69). The weaving motor supplies the power to the welding wire. The rack gear is fixed to the rotary disk, and the spur gear is engaged with the rack gear. The locking member surrounds the spur gear in order for the spur gear not to leaving from the rotary disk. The weaving width adjusting unit includes a weaving width adjusting knob(14).

Description

서브머지드 아크 용접와이어의 위빙폭 조절장치{The Weaving Width Regulator of Submerged Arc Welding Wire}Weaving Width Regulator of Submerged Arc Welding Wire

본 발명은 서브머지드 아크용접 와이어를 용접길이 방향의 수직방향으로 좌우로 위빙하는 용접와이어 위빙장치에 있어서 용접을 중단하지 않고 용접중 실시간으로 용접와이어의 위빙폭을 조절할 수 있도록 하는 서브머지드 아크 용접와이어의 위빙폭 조절장치에 관한 것이다.The present invention is a welding wire weaving device for weaving a submerged arc welding wire from side to side in the vertical direction of the welding length direction, the submerged arc to adjust the weaving width of the welding wire in real time without interruption of welding. It relates to a weaving width adjusting device of the welding wire.

일반적으로, 서브머지드 아크 용접법에 의한 용접단면(a) 형상은 도 1과 같이 상부는 넓은 반면 하부는 깊고 좁은 특징을 가지고 있다. 상기와 같은 서브머지드 아크용접법의 용접단면은 용접될 두 모재 사이의 간격이 변하거나 서브머지드 아크용접와이어가 용접될 두 모재 사이의 중심에서 벗어나게 되면 도 2와 도 3과 같이 용접표면은 용접결함이 없는 양호한 반면 내부는 용접결함(b)(c)이 존재하는 원인이 되고 있다. 이를 해결하기 위한 방법이 서브머지드 아크 용접와이어를 용접길이방향의 수직방향으로 좌우로 위빙하여 도 2와 도 3과 같은 내부 용접결함을 방 지하는 방법이 본 출원인의 특허출원번호 07-116541호와 08-002154에 제시되어 있다. 상기 특허출원번호 08-002154호의 도 6과 도 7에 제시된 용접와이어 송급 및 위빙기구부의 앞면과 뒷면의 사시도를 도 4와 도 5에 나타내었다.In general, the welding cross section (a) shape by the submerged arc welding method has a wide upper portion while the lower portion is deep and narrow as shown in FIG. 1. When the welding cross section of the submerged arc welding method changes the distance between the two base materials to be welded or the submerged arc welding wire is out of the center between the two base materials to be welded, the welding surface is welded as shown in FIGS. 2 and 3. While the defect is good, the inside causes the presence of weld defects (b) and (c). The method for solving this problem is to weav the submerged arc welding wire from side to side in the vertical direction of the welding length direction to prevent internal welding defects as shown in FIGS. 2 and 3. And 08-002154. 4 and 5 are perspective views of the front and rear surfaces of the welding wire feeding and weaving mechanism shown in FIGS. 6 and 7 of the patent application No. 08-002154.

도 4에 따르면 위빙모터(65)의 회전에 의해 위빙모터의 샤프트(67)에 연결된 회전원반(68)이 회전하게 되고 회전원반(68)의 중심에서 벗어난 위치에 연결된 회전가이드바(69)가 가이드바(70)에 연결된 용접와이어 송급장치(55)를 위빙축핀(62)을 기준으로 좌우로 움직이게 하여 용접와이어(54)를 위빙하는 구조로 되어 있다. 용접될 모재의 간격에 따라 용접와이어(54)의 위빙폭을 조절하는 장치를 도 6에 나타내었다. 회전원반(68)의 중심으로부터 다른 거리에 있는 구멍(71)에 회전가이드바(69)를 연결하여 용접와이어의 위빙폭을 조절한다. 하지만 용접될 두 모재의 간격이 용접길이 방향에 따라 변하면 위빙폭을 조절하기 위해 회전원반의 회전을 멈추어야 하므로 용접을 중단하여야 하는 문제점이 있다. According to Figure 4 by the rotation of the weaving motor 65, the rotary disk 68 connected to the shaft 67 of the weaving motor is rotated, the rotary guide bar 69 connected to the position off the center of the rotary disk 68 is The welding wire feeding device 55 connected to the guide bar 70 is moved to the left and right with respect to the weaving shaft pin 62 to weave the welding wire 54. An apparatus for adjusting the weaving width of the welding wire 54 according to the spacing of the base material to be welded is shown in FIG. 6. By connecting the rotation guide bar 69 to the hole 71 at a different distance from the center of the rotation disk 68 to adjust the weaving width of the welding wire. However, when the spacing of the two base materials to be welded is changed according to the welding length direction, there is a problem that the welding must be stopped because the rotation of the rotating disk must be stopped to control the weaving width.

이에 본 발명은 상기한 문제점을 해결하기 위한 것으로서 용접될 두 모재의 간격이 변할 때 용접와이어의 위빙을 계속하면서 용접와이어의 위빙폭을 실시간으로 조절할 수 있도록 하는 서브머지드 아크 용접와이어의 위빙폭 조절장치를 제시하는 데 그 목적이 있다.Accordingly, the present invention is to solve the above problems, the weaving width of the submerged arc welding wire to adjust the weaving width of the welding wire in real time while continuing the weaving of the welding wire when the distance between the two base material to be welded is changed The purpose is to present the device.

상기한 본 발명의 목적을 달성하기 위한 기술적 사상으로서 본 발명에 의하면, 서브머지드 아크용접시 용접와이어의 위빙폭을 조절하는 것에 있어서, 용접와이어의 위빙에 필요한 동력을 제공하는 위빙모터(65); 위빙모터(65)에 연속으로 연결된 위빙모터 샤프트(67)와 회전원반(68); 회전원반(68)에 고정된 래크기어(11)와 래크기어에 맞물리는 평기어(12); 회전원반(68)으로부터 평기어(12)가 이탈되지 않도록 평기어를 감싸는 형태로 구비된 이탈방지대(13); 상기 래크기어(11)와 맞물리는 평기어(12) 및 이 평기어(12)를 회전시키는 위빙폭 조절노브(14)로 구성되는 위빙폭 조절수단(100)과; 상기 위빙폭 조절수단(100)의 위빙폭 조절노브(14)와 평기어(12)의 중간에 설치되는 베어링(15); 상기 베어링(15)에 연결된 회전가이드바(69)를 포함하여 구성되어 있는 것을 특징으로 하는 서브머지드 아크 용접와이어의 위빙폭 조절장치를 제시한다According to the present invention as a technical idea for achieving the above object of the present invention, in adjusting the weaving width of the welding wire during the submerged arc welding, the weaving motor 65 to provide the power required for the weaving of the welding wire ; A weaving motor shaft 67 and a rotating disk 68 continuously connected to the weaving motor 65; A rack gear 11 fixed to the rotating disk 68 and a spur gear 12 meshed with the rack gear; A separation prevention member 13 provided in a form of surrounding the spur gear so that the spur gear 12 is not separated from the rotating disk 68; A weaving width adjusting means (100) consisting of a spur gear (12) meshing with the rack gear (11) and a weaving width adjusting knob (14) for rotating the spur gear (12); A bearing 15 installed in the middle of the weaving width adjusting knob 14 and the spur gear 12 of the weaving width adjusting means 100; The present invention provides a weaving width adjusting device for a submerged arc welding wire, comprising a rotation guide bar 69 connected to the bearing 15.

상기한 바와 같은 본 발명에 따르면, 서브머지드 아크 용접 와이어를 용접길이방향의 수직방향으로 좌우로 위빙하는 용접와이어 위빙장치에 있어서 두 모재 사이의 간격이 변하여 용접부에 결함이 발생하는 가능성이 있을 때 용접와이어의 위빙폭을 용접중 실시간으로 조절함으로써 용접을 중단하지 않고 연속으로 용접하여 용접생산성을 향상시킬 수 있다.According to the present invention as described above, in the welding wire weaving device for weaving the submerged arc welding wire from side to side in the vertical direction of the welding length direction, when the distance between the two base materials changes, there is a possibility that a defect occurs in the welding portion. By adjusting the weaving width of the welding wire in real time during welding, welding productivity can be improved by continuously welding the welding wire without interrupting the welding.

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 7과 8은 본 발명에 따른 서브머지드 아크 용접 와이어의 위빙폭 조절장치를 나타낸 정면도와 측면도이다.7 and 8 are a front view and a side view showing the weaving width adjusting device of the submerged arc welding wire according to the present invention.

본 발명은 서브머지드 아크용접시 용접와이어의 위빙폭을 조절하는 것에 있어서, 용접와이어의 위빙에 필요한 동력을 제공하는 위빙모터(65); 위빙모터(65)에 연속으로 연결된 위빙모터 샤프트(67)와 회전원반(68); 회전원반(68)에 고정된 래크기어(11)와 래크기어에 맞물리는 평기어(12); 회전원반(68)으로부터 평기어(12)가 이탈되지 않도록 평기어를 감싸는 형태로 구비된 이탈방지대(13); 상기 래크기어(11)와 맞물리는 평기어(12) 및 이 평기어(12)를 회전시키는 위빙폭 조절노브(14)로 구성되는 위빙폭 조절수단(100)과; 상기 위빙폭 조절수단(100)의 위빙폭 조절노브(14)와 평기어(12)의 중간에 설치되는 베어링(15); 상기 베어링(15)에 연결된 회전가이드바(69)를 포함하여 구성되어 있다.The present invention is to control the weaving width of the welding wire during the submerged arc welding, Weaving motor 65 for providing the power required for the weaving of the welding wire; A weaving motor shaft 67 and a rotating disk 68 continuously connected to the weaving motor 65; A rack gear 11 fixed to the rotating disk 68 and a spur gear 12 meshed with the rack gear; A separation prevention member 13 provided in a form of surrounding the spur gear so that the spur gear 12 is not separated from the rotating disk 68; A weaving width adjusting means (100) consisting of a spur gear (12) meshing with the rack gear (11) and a weaving width adjusting knob (14) for rotating the spur gear (12); A bearing 15 installed in the middle of the weaving width adjusting knob 14 and the spur gear 12 of the weaving width adjusting means 100; It comprises a rotation guide bar 69 connected to the bearing (15).

상기와 같이 구성된 본 발명은 위빙모터(65)의 회전에 의해 위빙모터 샤프트(67)에 연결된 회전원반(68)이 회전하게 되고 회전원반 위에 형성된 평기어(12)에 연속적으로 연결된 위빙폭조절노브(14)와 베어링(15)과 회전가이드바(69)를 통해 위빙모터(65)의 회전에 의하여 용접와이어 송급장치(55)를 좌우로 움직이게 하여 용접와이어(54)를 위빙한다. The present invention configured as described above is a rotary disk 68 connected to the weaving motor shaft 67 by the rotation of the weaving motor 65, the weaving width adjustment knob continuously connected to the spur gear 12 formed on the rotary disk By the rotation of the weaving motor 65 through the 14 and the bearing 15 and the rotation guide bar 69 to move the welding wire feeder 55 to the left and right weaving the welding wire (54).

두 모재사이의 간격이 변하여 용접와이어(54)의 위빙폭을 변경하여야 할 때는 상기 래크기어(11)와 평기어(12) 및 위빙폭조절노브(14)로 구성되는 위빙폭 조절수 단(100)의 위빙폭 조절 노브(14)를 회전시키면 평기어(12)는 래크기어(11) 위를 회전하면서 움직이게 되고 평기어(12)의 중심과 회전원반(68)의 중심 사이의 거리가 변함에 따라 용접의 중단없이 용접와이어의 위빙폭을 실시간으로 조절할 수 있다. When the weaving width of the welding wire 54 is to be changed by changing the distance between the two base materials, the weaving width adjusting stage consisting of the rack gear 11, the spur gear 12, and the weaving width adjusting knob 14 ( When the weaving width adjusting knob 14 of 100 is rotated, the spur gear 12 moves while rotating on the rack gear 11, and the distance between the center of the spur gear 12 and the center of the rotating disk 68 is As it changes, the weaving width of the welding wire can be adjusted in real time without interruption of the welding.

이와 더불어 상기 위빙폭 조절수단(100)은 래크기어(11)와 평기어(12)의 조합 외에도 웜과 웜기어의 조합 및 수직으로 맞물리는 베벨기어의 조합을 포함하여 위빙폭조절 노브의 회전을 수직으로 전달하여 회전원반(68)의 중심으로부터 거리를 조절하는 장치를 포함한다.In addition to the combination of the rack gear 11 and the spur gear 12, the weaving width adjusting means 100 includes a combination of a worm and a worm gear and a combination of a bevel gear that meshes vertically. It includes a device for vertically transmitting to adjust the distance from the center of the rotating disk (68).

상술한 바와 같이, 본 발명의 바람직한 실시 예로서 서브머지드 아크 용접와이어의 위빙폭을 실시간으로 조절할 수 있도록 하는 서브머지드 아크 용접와이어의 위빙폭 조절장치에 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 preferred embodiment of the present invention has been described the weaving width adjusting device of the submerged arc welding wire to be able to adjust the weaving width of the submerged arc welding wire in real time, the present invention is the specific It is not limited to the preferred embodiment of the present invention, without departing from the gist of the invention claimed in the claims anyone of ordinary skill in the art that various modifications can be made, of course, such Changes may be included within the technical scope of the claims.

도 1은 서브머지드 아크 용접법에 의한 용접단면의 형상을 예시한 도면1 is a view illustrating the shape of the weld cross section by the submerged arc welding method

도 2는은 두 모재사이의 간격이 넓을 때 서브머지드 아크 용접법에 의한 용접단면의 형상을 예시한 도면2 is a view illustrating the shape of the weld cross section by the submerged arc welding method when the distance between the two base materials is wide;

도 3은 서브머지드 아크 용접와이어가 두 모재사이의 중심에서 벗어났을 때 서브머지드 아크 용접법에 의한 용접단면의 형상을 예시한 도면3 is a view illustrating the shape of the weld cross section by the submerged arc welding method when the submerged arc welding wire is out of the center between the two base materials;

도 4와 도5는 종래의 용접와이어 송급 및 위빙 기구부의 정면과 배면 사시도4 and 5 are a front and rear perspective view of a conventional welding wire supply and weaving mechanism portion

도 6은 종래의 서브머지드 아크용접와이어의 위빙폭 조절장치의 개략도Figure 6 is a schematic view of the weaving width adjusting device of a conventional submerged arc welding wire

도 7과 도 8은 본 발명에 따른 서브머지드 아크 용접와이어의 위빙폭 조절장치를 예시한 도면7 and 8 illustrate the weaving width adjusting device of the submerged arc welding wire according to the present invention.

[도면의 주요부분에 대한 부호의 설명][Explanation of symbols on the main parts of the drawings]

11: 래크기어 12: 평기어11: rack gear 12: spur gear

13: 이탈방지대 14: 위빙폭조절노브13: Release stop 14: Weaving width adjusting knob

15: 베어링 54: 용접와이어 15: bearing 54: welded wire

55: 용접와이어 송급장치 62: 위빙축핀55: welding wire feeder 62: weaving shaft pin

65: 위빙모터 67 : 위빙모터샤프트 65: weaving motor 67: weaving motor shaft

68: 회전원판 69: 회전 가이드바 68: rotating disc 69: rotating guide bar

70: 가이드 바 71: 구멍70: guide bar 71: hole

100 : 위빙폭 조절수단100: weaving width adjusting means

Claims (2)

서브머지드 아크용접시 용접와이어의 위빙폭을 조절하는 서브머지드 아크 용접와이어의 위빙폭 조절장치에 있어서,In the weaving width adjusting device of the submerged arc welding wire to adjust the weaving width of the welding wire when the submerged arc welding, 용접와이어의 위빙에 필요한 동력을 제공하는 위빙모터(65); 위빙모터(65)에 연속으로 연결된 위빙모터 샤프트(67)와 회전원반(68); 회전원반(68)에 고정된 래크기어(11)와 래크기어에 맞물리는 평기어(12); 회전원반(68)으로부터 평기어(12)가 이탈되지 않도록 평기어를 감싸는 형태로 구비된 이탈방지대(13); 상기 래크기어(11)와 맞물리는 평기어(12) 및 이 평기어(12)를 회전시키는 위빙폭 조절노브(14)로 구성되는 위빙폭 조절수단(100)과; 상기 위빙폭 조절수단(100)의 위빙폭 조절노브(14)와 평기어(12)의 중간에 설치되는 베어링(15); 상기 베어링(15)에 연결된 회전가이드바(69)를 포함하여 구성되어 있는 것을 특징으로 하는 서브머지드 아크 용접와이어의 위빙폭 조절장치Weaving motor 65 for providing the power required for the weaving of the welding wire; A weaving motor shaft 67 and a rotating disk 68 continuously connected to the weaving motor 65; A rack gear 11 fixed to the rotating disk 68 and a spur gear 12 meshed with the rack gear; A separation prevention member 13 provided in a form of surrounding the spur gear so that the spur gear 12 is not separated from the rotating disk 68; A weaving width adjusting means (100) consisting of a spur gear (12) meshing with the rack gear (11) and a weaving width adjusting knob (14) for rotating the spur gear (12); A bearing 15 installed in the middle of the weaving width adjusting knob 14 and the spur gear 12 of the weaving width adjusting means 100; Weaving width adjusting device of the submerged arc welding wire, characterized in that it comprises a rotation guide bar 69 connected to the bearing 15 제 1항에 있어서, 상기 위빙폭 조절수단(100)은 웜과 웜기어의 조합 또는 수직으로 맞물리는 베벨기어의 조합 중 어느 하나로 구성되며, 위빙폭 조절 노브의 회전을 수직으로 전달하여 회전원반(68)의 중심으로부터 거리를 조절하는 것을 특징으로 하는 서브머지드 아크 용접와이어의 위빙폭 조절장치According to claim 1, The weaving width adjusting means 100 is composed of any one of the combination of the worm and the worm gear or the combination of the bevel gear that is engaged vertically, the rotation disk (68) by transmitting the rotation of the weaving width adjustment knob vertically Weaving width adjusting device of the submerged arc welding wire, characterized in that the distance from the center of the)
KR1020080042672A 2008-05-08 2008-05-08 The weaving width regulator of submerged arc welding wire KR20090116879A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190059502A (en) 2017-11-23 2019-05-31 대우조선해양 주식회사 Welding wire weaving adjustment method and its weaving adjustment device of submerged arc welding carriage
CN110977149A (en) * 2019-12-16 2020-04-10 宝鸡市捷龙商贸有限公司 Cutting equipment convenient to move plate for machining electromechanical equipment
CN113118674A (en) * 2021-04-17 2021-07-16 浙江安吉铭成椅业有限公司 Seat chassis welding device
CN113385789A (en) * 2021-05-31 2021-09-14 王克宝 Submerged arc welding machine
CN113600979A (en) * 2021-07-12 2021-11-05 上海外高桥造船有限公司 Method for welding post wheel thin plate filament submerged arc automatic welding jointed board

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190059502A (en) 2017-11-23 2019-05-31 대우조선해양 주식회사 Welding wire weaving adjustment method and its weaving adjustment device of submerged arc welding carriage
CN110977149A (en) * 2019-12-16 2020-04-10 宝鸡市捷龙商贸有限公司 Cutting equipment convenient to move plate for machining electromechanical equipment
CN110977149B (en) * 2019-12-16 2021-12-21 江苏恒实自动化设备有限公司 Cutting equipment convenient to move plate for machining electromechanical equipment
CN113118674A (en) * 2021-04-17 2021-07-16 浙江安吉铭成椅业有限公司 Seat chassis welding device
CN113118674B (en) * 2021-04-17 2022-09-16 浙江安吉铭成椅业有限公司 Seat chassis welding device
CN113385789A (en) * 2021-05-31 2021-09-14 王克宝 Submerged arc welding machine
CN113600979A (en) * 2021-07-12 2021-11-05 上海外高桥造船有限公司 Method for welding post wheel thin plate filament submerged arc automatic welding jointed board

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