KR20100032015A - Electrode slag welding appratus to low heat input with multiple electrodes and the welding method - Google Patents

Electrode slag welding appratus to low heat input with multiple electrodes and the welding method Download PDF

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Publication number
KR20100032015A
KR20100032015A KR1020080090953A KR20080090953A KR20100032015A KR 20100032015 A KR20100032015 A KR 20100032015A KR 1020080090953 A KR1020080090953 A KR 1020080090953A KR 20080090953 A KR20080090953 A KR 20080090953A KR 20100032015 A KR20100032015 A KR 20100032015A
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South Korea
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welding
wire
electrode
power supply
steel sheets
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KR1020080090953A
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Korean (ko)
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배상득
김대순
김경주
김영필
김대주
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현대중공업 주식회사
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Priority to KR1020080090953A priority Critical patent/KR20100032015A/en
Publication of KR20100032015A publication Critical patent/KR20100032015A/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
    • B23K25/00—Slag welding, i.e. using a heated layer or mass of powder, slag, or the like in contact with the material to be joined
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • 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
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/18—Sheet panels

Abstract

PURPOSE: A multi-pole electro slag welding machine and a welding method thereof are provided to prevent formation of arc and spatter by welding an outer sheet of a ship with an electro slag method, and to reduce fatigue for welding. CONSTITUTION: A multi-pole electro slag welding machine(100) comprises two steel sheets(111), a backing member(113), copper dipping(115), an additive wire(131), an electrode wire(121), a first power supply part(125), and a second power supply part(135). The additive wire is extended to a welding space. The electrode wire is extended to the welding space. The first power supply part supplies power to the electrode wire. The second power supply part supplies power to the additive wire.

Description

용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접장치 및 그 용접방법{Electrode Slag Welding Appratus To Low Heat Input With Multiple Electrodes And The Welding Method}Electrode Slag Welding Appratus To Low Heat Input With Multiple Electrodes And The Welding Method}

본 발명은 일렉트로 슬래그 용접장치에 관한 것으로서, 특히 선박의 외판 등을 용접하기 위해 용접입열량을 감소시킬 수 있게 구성한 것이다.The present invention relates to an electroslag welding apparatus, and in particular, is configured to reduce the amount of heat input of welding in order to weld the outer shell of a ship.

조선분야에서는 선체에 두꺼운 외판을 일렉트로 가스 용접방식으로 용접한다. 일렉트로 가스 아크용접은 과다한 용접입열량, 아크에 의한 작업자의 피로감, 스패터에 의한 팁의 손상, 팁의 손상으로 인한 아크의 불안정 등의 문제점이 있다.In shipbuilding, thick outer plates are welded to the hull by means of electrogas welding. Electro gas arc welding has problems such as excessive welding heat input, fatigue of the operator by the arc, damage of the tip by the spatter, instability of the arc due to the damage of the tip.

한편, 일렉트로 슬래그 용접은 아크 및 스패터의 발생이 없는 저항용접의 일종으로서, 일렉트로 슬래그 용접의 장점을 기반으로 건설분야에서 적용되고 있다. 일렉트로 슬래그 용접방식에 따른 용접 두께는 20 내지 500mm이다.On the other hand, electro slag welding is a kind of resistance welding without the generation of arc and spatter, and has been applied in the construction field based on the advantages of electro slag welding. Welding thickness according to the electro slag welding method is 20 to 500mm.

하지만, 이와 같은 일렉트로 슬래그 용접을 선박용접에 적용하지 못하는 까닭은, 용접입열량이 높기 때문이다.However, the reason why such electro slag welding is not applied to ship welding is because the heat input of welding is high.

본 발명은 앞에서 설명한 바와 같은 종래 기술의 문제점을 해결하기 위하여 발명된 것으로서, 용융풀의 열량을 저감시킴으로써, 일렉트로 슬래그 용접 방식으로 선박의 강판을 상향 이동하며 용접할 수 있게 구성한 다전극 일렉트로 슬래그 용접장치 및 그 용접방법을 제공하는 데 그 목적이 있다.The present invention has been invented to solve the problems of the prior art as described above, by reducing the amount of heat of the molten pool, multi-electrode electro slag welding apparatus configured to weld and move the steel plate of the vessel upward by the electro slag welding method And its welding method.

상기와 같은 목적을 달성하기 위한 본 발명의 다전극 일렉트로 슬래그 용접장치는 맞대응해 위치하는 2장의 선박용 강판과, 상기 강판들의 배면에 위치하는 백킹재와, 상기 강판들의 정면에 위치하는 동담금과, 2장의 선박용 강판과 백킹재 및 동담금에 의해 형성된 용접공간으로 연장된 첨가와이어와, 상기 용접공간으로 연장된 전극와이어와, 상기 전극와이어에 전원을 공급하는 제1 전원공급부 및, 상기 첨가와이어를 200℃ 내지 1000℃로 가열하기 위해 상기 첨가와이어에 전원을 공급하는 제2 전원공급부를 포함하며, 상기 강판을 따라 상향 이동하며 용접하는 것을 기술적 특징으로 한다.The multi-electrode electroslag welding apparatus of the present invention for achieving the above object comprises two sheets of marine steel plates which are located in correspondence with each other, a backing material located on the back of the steel sheets, and a copper filler placed in front of the steel plates; An additional wire extending into a welding space formed by two marine steel sheets, a backing material and copper plating, an electrode wire extending into the welding space, a first power supply for supplying power to the electrode wire, and the additional wire It includes a second power supply for supplying power to the additional wire for heating to 200 ℃ to 1000 ℃, it is characterized in that the welding moves up along the steel plate.

또한, 본 발명의 용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접방법은 맞대응해 위치하는 2장의 선박용 강판과, 상기 강판들의 배면에 위치하는 백킹재와, 상기 강판들의 정면에 위치하는 동담금에 의해 형성된 용접공간에 첨가와이어와 전극와이어를 위치하는 단계와, 상기 전극와이어에 전원을 공급하는 단계와, 상기 첨가와이어에 전원을 공급하여 상기 첨가와이어를 200℃ 내지 1000℃로 가열 하는 단계와, 상기 용접공간을 상향으로 이동하면서 상기 2장의 선박용 강판을 용접하는 단계를 포함하는 것을 기술적 특징으로 한다.In addition, the multi-electrode electroslag welding method of reducing the welding heat input of the present invention is provided by two marine steel plates which are located in contact with each other, a backing material positioned on the back of the steel sheets, and copper filler placed in front of the steel sheets. Positioning an additional wire and an electrode wire in the formed welding space, supplying power to the electrode wire, supplying power to the additional wire, and heating the additive wire to 200 ° C. to 1000 ° C .; Technical features, including the step of welding the two steel plates for ships while moving the welding space upward.

앞서 설명한 바와 같이, 본 발명의 용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접장치 및 그 용접방법은 선박의 외판을 일렉트로 슬래그 용접함으로써, 일렉트로 가스용접의 문제점인 아크 및 스패터가 발생하지 않아 용접사의 피로도가 감소하며 또한 스패터에 의한 장비의 파손 및 용접불량을 미연에 예방할 수 있다는 장점이 있다.As described above, the multi-electrode electro slag welding apparatus and the welding method for reducing the welding heat input of the present invention by welding the outer shell of the vessel by the electric slag, the arc and spatter which is a problem of the electro-gas welding does not occur, Fatigue is reduced, and there is an advantage that it is possible to prevent equipment damage and welding defects due to spatter.

아래에서는 본 발명에 따른 용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접장치 및 그 용접방법의 양호한 실시예를 첨부한 도면을 참조로 하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a multi-electrode electroslag welding apparatus and a welding method for reducing the amount of heat input welding according to the present invention will be described in detail.

도면에서, 도 1은 본 발명에 따른 용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접장치의 개념도이고, 도 2는 도 1에 도시된 용접부위를 나타낸 평면도이다.1 is a conceptual diagram of a multi-electrode electroslag welding apparatus for reducing the welding heat input according to the present invention, Figure 2 is a plan view showing a welding portion shown in FIG.

도 1에 도시된 바와 같이, 용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접장치(100)는 선박의 외판인 강판(111)을 용접하는데 사용된다. 개선된 두 강판(111)의 일면에 백킹재(113)를 위치하고, 강판(111)의 타면에 동담금(115)을 위치한다. 그리고 백킹재(113)와 동담금(115) 및 두 강판(111)이 형성하는 공간(117) 에 전극와이어(121)와 첨가와이어(131)를 위치하고 전극와이어(121)와 첨가와이어(131)에 전력을 공급하면 상기 공간(117)에 용융풀(119)이 형성되면서 용접된다.As shown in FIG. 1, the multi-electrode electro slag welding apparatus 100 which reduces the amount of welding heat input is used to weld the steel plate 111, which is an outer plate of a ship. The backing material 113 is positioned on one surface of the two improved steel sheets 111, and the copper filler 115 is positioned on the other surface of the steel sheet 111. In addition, the electrode wire 121 and the additive wire 131 are positioned in the space 117 formed by the backing material 113, the copper filler 115, and the two steel sheets 111, and the electrode wire 121 and the additive wire 131 are formed. When power is supplied to the molten pool 119 in the space 117 is welded.

한편, 개선된 강판(111)을 따라 다전극 용접장치(100)를 상향으로 이동하면서 용접이 이루어진다. 이때 백킹재(113) 및 동담금(115)을 이동시키면서 용접하며, 전극와이어(121) 및 첨가와이어(131) 또한 주행장치(140)를 따라 이동한다.Meanwhile, welding is performed while moving the multi-electrode welding apparatus 100 upward along the improved steel sheet 111. At this time, welding while moving the backing material 113 and copper filler 115, the electrode wire 121 and the additional wire 131 also moves along the traveling device (140).

아래에서는 이와 같이 구성된 용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접장치 및 그 용접방법에 대해 구체적으로 설명한다.Hereinafter, a multi-electrode electro slag welding apparatus and a welding method for reducing the welding heat input configured as described above will be described in detail.

도 1 및 도 2에 도시된 바와 같이, 개선된 강판(111)의 일면과 타면에는 백킹재(113)와 동담금(115)이 위치하며, 용접하는 방향으로 주행장치(140)가 이동할 수 있게 용접방향으로 레일(141)이 설치되며, 레일(141)을 따라 주행장치(140)가 상향으로 이동한다.1 and 2, the backing material 113 and the copper filler 115 are positioned on one side and the other side of the improved steel plate 111, and the traveling device 140 may move in the welding direction. The rail 141 is installed in the welding direction, and the traveling device 140 moves upward along the rail 141.

주행장치(140)에는 지지대(143)가 용접부위로 연장되고, 지지대(143)의 단부에는 안내부재(122, 132)가 2개 장착된다. 그리고 제1 안내부재(122)는 전극와이어(121)가 상기 용접공간(117)으로 연장되도록 안내하며, 제2 안내부재(132)는 첨가와이어(131)가 상기 용접공간(117)으로 연장되도록 안내한다.The support device 143 extends to the welding portion in the traveling device 140, and two guide members 122 and 132 are mounted at the end of the support device 143. The first guide member 122 guides the electrode wire 121 to the welding space 117, and the second guide member 132 extends the additional wire 131 to the welding space 117. To guide.

한편, 상기 전극와이어(121)는 제1 공급부(123)에서 공급되는데, 제1 공급부(123)는 모터에 의해 회전하는 릴을 포함하며, 상기 릴에 전극와이어(121)가 감겨진다. 따라서 제1 공급부(123)의 모터 회전속도에 따라 전극와이어(121)의 송급속도가 제어된다. 그리고 상기 전극와이어(121)에는 전원을 공급하는 제1 전원공급부(125)가 연결되어 전극와이어(121)에는 전원이 공급된다.On the other hand, the electrode wire 121 is supplied from the first supply unit 123, the first supply unit 123 includes a reel rotated by a motor, the electrode wire 121 is wound around the reel. Therefore, the feeding speed of the electrode wire 121 is controlled according to the motor rotational speed of the first supply unit 123. In addition, a first power supply 125 for supplying power is connected to the electrode wire 121 so that power is supplied to the electrode wire 121.

첨가와이어(131)는 제2 공급부(133)에서 공급되며, 제2 공급부(133) 또한 제1 공급부(123)와 같이 모터에 의해 회전하는 릴을 포함하며, 상기 릴에 첨가와이어(131)가 감겨진다. 따라서 제2 공급부(133)의 모터 회전속도에 따라 첨가와이어(131)의 송급속도가 제어되며, 상기 첨가와이어(131)에는 전원을 공급하는 제2 전원공급부(135)가 연결되어 첨가와이어(131)에 전원이 공급된다.The additional wire 131 is supplied from the second supply unit 133, and the second supply unit 133 also includes a reel that is rotated by a motor like the first supply unit 123, and the additional wire 131 is connected to the reel. It is wound. Therefore, the supply speed of the additional wire 131 is controlled according to the motor rotational speed of the second supply unit 133, and the additional wire 131 is connected to a second power supply unit 135 for supplying power. ) Is supplied with power.

여기에서, 첨가와이어(131)는 비아크성 와이어이며, 제2 전원공급부(135)에서 공급하는 전원에 의해 200℃ 내지 1000℃로 가열된다. 200℃ 내지 1000℃는 용융풀의 온도보다 낮은 온도로서, 첨가와이어(131)가 공급되면서 용융풀의 입열량을 감소시킨다.Here, the additive wire 131 is a via wire, and is heated to 200 ° C. to 1000 ° C. by the power supplied from the second power supply unit 135. 200 ° C to 1000 ° C is a temperature lower than that of the melt pool, and the additional wire 131 is supplied to reduce the heat input amount of the melt pool.

첨가와이어(131)를 200℃ 내지 1000℃로 가열하는 이유는, 첨가와이어(131)의 온도가 200℃미만일 경우에 첨가와이어(131)는 콜드상태로서 용융풀에서 용융되는 첨가와이어(131)의 용융량이 적게 되고, 이로 인해 첨가와이어(131)의 송급속도 및 용접속도가 느려지는 단점이 있다.The reason why the additive wire 131 is heated to 200 ° C. to 1000 ° C. is that when the temperature of the additive wire 131 is less than 200 ° C., the additive wire 131 is cold and melts in the molten pool. There is a disadvantage that the amount of melt is reduced, and this slows the feeding speed and the welding speed of the additive wire 131.

그리고 첨가와이어(131)를 1000℃를 초과하게 되면 첨가와이어(131)가 용융풀의 온도를 낮추는 효과가 작아 선박 강판을 용접하기에 접합하지 않게 된다.When the additive wire 131 exceeds 1000 ° C., the additive wire 131 has a low effect of lowering the temperature of the molten pool, so that the additional wire 131 is not joined to weld the vessel steel plate.

도 1은 본 발명에 따른 용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접장치의 개념도이고, 1 is a conceptual diagram of a multi-electrode electro slag welding apparatus for reducing the amount of welding heat input according to the present invention,

도 2는 도 1에 도시된 용접부위를 나타낸 평면도이다.FIG. 2 is a plan view showing the welding portion shown in FIG. 1.

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

100 : 일렉트로 슬래그 용접장치 111 : 강판100: electroslag welding apparatus 111: steel sheet

113 : 백킹재 115 : 동담금113: backing material 115: copper

117 : 공간 119 : 용융풀117: space 119: molten pool

121 : 전극와이어 122 : 제1 안내부재121: electrode wire 122: first guide member

123 : 제1 공급부 125 : 제1 전원공급부123: first supply unit 125: first power supply unit

131 : 첨가와이어 132 : 제2 안내부재131: additional wire 132: second guide member

133 : 제2 공급부 135 : 제2 전원공급부133: second supply unit 135: second power supply unit

140 : 주행장치 141 : 레일140: driving device 141: rail

143 : 지지대143: support

Claims (2)

맞대응해 위치하는 2장의 선박용 강판(111)과,Two steel plates 111 for ships which are located in response to each other, 상기 강판들의 배면에 위치하는 백킹재(113)와,The backing material 113 is located on the back of the steel sheets, 상기 강판들의 정면에 위치하는 동담금(115)과,Copper filler 115 located in front of the steel sheet, 2장의 선박용 강판과 백킹재 및 동담금에 의해 형성된 용접공간(117)으로 연장된 첨가와이어(131)와, An additional wire 131 extended to the welding space 117 formed by two ship steel sheets, a backing material and copper plating; 상기 용접공간으로 연장된 전극와이어(121)와, An electrode wire 121 extending into the welding space; 상기 전극와이어에 전원을 공급하는 제1 전원공급부(125) 및,A first power supply 125 supplying power to the electrode wire; 상기 첨가와이어를 200℃ 내지 1000℃로 가열하기 위해 상기 첨가와이어에 전원을 공급하는 제2 전원공급부(135)를 포함하며,It includes a second power supply unit 135 for supplying power to the additional wire to heat the additional wire to 200 ℃ to 1000 ℃, 상기 강판을 따라 상향 이동하며 용접하는 것을 특징으로 하는 다전극 일렉트로 슬래그 용접장치.Electro-slag welding apparatus characterized in that the welding moves upward along the steel plate. 맞대응해 위치하는 2장의 선박용 강판과, 상기 강판들의 배면에 위치하는 백킹재와, 상기 강판들의 정면에 위치하는 동담금에 의해 형성된 용접공간에 첨가와이어와 전극와이어를 위치하는 단계와,Placing additional wires and electrode wires in a welding space formed by two marine steel plates which are located to face each other, a backing material positioned on a rear surface of the steel sheets, and a copper filler placed on the front side of the steel sheets; 상기 전극와이어에 전원을 공급하는 단계와,Supplying power to the electrode wire; 상기 첨가와이어에 전원을 공급하여 상기 첨가와이어를 200℃ 내지 1000℃로 가열하는 단계와,Supplying power to the additional wire to heat the additional wire to 200 ° C. to 1000 ° C .; 상기 용접공간을 상향으로 이동하면서 상기 2장의 선박용 강판을 용접하는 단계를 포함하는 것을 특징으로 하는 용접입열량을 감소시키는 다전극 일렉트로 슬래그 용접방법.And welding the two marine steel sheets while moving the welding space upward.
KR1020080090953A 2008-09-17 2008-09-17 Electrode slag welding appratus to low heat input with multiple electrodes and the welding method KR20100032015A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210245290A1 (en) * 2011-12-23 2021-08-12 Esab Ab Arc welding head and a welding arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210245290A1 (en) * 2011-12-23 2021-08-12 Esab Ab Arc welding head and a welding arrangement

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