KR100668233B1 - Waveform control for high speed gma welding - Google Patents

Waveform control for high speed gma welding Download PDF

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KR100668233B1
KR100668233B1 KR1020060016048A KR20060016048A KR100668233B1 KR 100668233 B1 KR100668233 B1 KR 100668233B1 KR 1020060016048 A KR1020060016048 A KR 1020060016048A KR 20060016048 A KR20060016048 A KR 20060016048A KR 100668233 B1 KR100668233 B1 KR 100668233B1
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welding
short
high speed
circuit
arc
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KR1020060016048A
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Korean (ko)
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김희진
유회수
김영삼
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한국생산기술연구원
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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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • 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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073—Stabilising the arc
    • 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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073—Stabilising the arc
    • B23K9/0732—Stabilising of the arc current
    • 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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073—Stabilising the arc
    • B23K9/0738—Stabilising of the arc by automatic re-ignition means
    • 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
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • 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
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
    • 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
    • B23K9/32—Accessories

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

Abstract

A waveform control method for GMA(Gas Metal Arc) high speed welding is provided to stably progress the GMA high speed welding and improve productivity by restricting the stubbing, instant short-circuit, and long-pending arc phenomena through the control of the welding current. A waveform control method for GMA high speed welding comprises a first step of guiding the rapid solution of the short-circuit by keeping the current rising gradient of the 150~300A/ms welding current during the short-circuit; a second step of delaying 8~12ms after the arc is generated; and a third step of guiding the short-circuit by reducing 40~60A current after the time delay.

Description

ＧＭＡ고속용접을 위한 파형제어방법{Waveform Control for High Speed GMA Welding}Waveform Control for High Speed Welding {Waveform Control for High Speed GMA Welding}

도 1 은 본 발명의 바람직한 실시 예에 따른 파형제어의 개념도,1 is a conceptual diagram of waveform control according to a preferred embodiment of the present invention;

도 2 는 고속용접시 발생하는 순간단락과 장기아크 현상을 보여주는 사진과 이에 동기화된 그래프,Figure 2 is a photograph showing a moment short circuit and long-term arc phenomenon occurring during high-speed welding and a graph synchronized therewith,

도 3 은 고속용접시 발생하는 스터빙 현상을 보여주는 사진과 이에 동기화된 그래프,3 is a photograph showing a stubbing phenomenon occurring during high speed welding and a graph synchronized thereto;

도 4 는 용접속도 2m/min, 송급속도 6.7m/min일 때, 파형제어시와 무제어시의 용접비드를 나타낸 사진,4 is a photograph showing welding beads at the time of waveform control and no control at the welding speed of 2m / min and the feeding speed of 6.7m / min,

도 5 는 용접속도 2m/min, 송급속도 3.7m/min일 때, 파형제어시와 무제어시의 용접비드를 나타낸 사진,5 is a photograph showing the weld bead at the time of waveform control and no control at the welding speed 2m / min, feed speed 3.7m / min,

도 6 은 용접속도 3.5m/min, 송급속도 3.7m/min일 때, 파형제어시와 무제어시의 용접비드를 나타낸 사진.Fig. 6 is a photograph showing weld beads at the time of waveform control and no control at welding speed of 3.5 m / min and feed speed of 3.7 m / min.

본 발명은 고속용접을 위한 파형제어방법에 관한 것으로, 특히 고속용접시 발생되는 스터빙, 순간단락, 장기아크 현상등을 방지하여 안정적인 고속용접이 가능하게 하는 GMA 고속용접을 위한 파형제어방법에 관한 것이다.The present invention relates to a waveform control method for high speed welding, and more particularly, to a waveform control method for high speed welding that enables stable high speed welding by preventing stubbing, short-circuit, and long-term arc phenomenon generated during high speed welding. will be.

일반적으로 GMA 용접은 보호가스에 따라 MIG, MAG, CO2용접으로 나뉘는데, 이 중 CO2용접은 보호가스의 가격이 저렴한 장점으로 인해 가장 선호되는 용접기법으로 알려져 있다. 이러한 CO2용접은 다량의 스패터가 발생하는 문제점이 있었으나, 용접전원이 인버터화되어 출력의 고속제어가 가능해짐에 따라, 기존 용접전원으로는 불가능하였던 복잡한 출력을 비교적 용이하게 제어할 수 있게 되었고, 이로 인해 용접시의 출력을 제어하는 파형제어기법의 개발이 가능하게 되어 스패터의 발생을 감소시킬 수 있게 되었다.In general, GMA welding is divided into MIG, MAG, CO 2 welding according to the protective gas, of which CO 2 welding is known as the most preferred welding technique due to the low cost of the protective gas. This CO 2 welding has a problem that a large amount of spatter occurs, but as the welding power source is converted into inverter to enable high-speed control of the output, it is possible to control the complicated output that was impossible with the conventional welding power source relatively easily. This makes it possible to develop a waveform control technique for controlling the output during welding, thereby reducing the occurrence of spatters.

상기와 같이 CO2용접에서 스패터의 저감이 가능해짐에 따라 고속용접에 대한 관심이 높아지게 되었다. 통상적으로 CO2 고속용접을 위해서는 전류를 높이고 전압을 낮추어 단락비(short circuit rate)를 증가 시키는 것이 중요하지만, 용접전압이 낮게 설정되면 단락시 상승전류가 낮아져 아크가 재발생되지 않고 용융풀에 부딪치는 스터빙 현상(장기단락)이 발생되며, 순간단락과 장기아크 등과 같은 현상으로 인하여 언터컷 또는 험핑비드가 발생하는 등의 문제점이 있었다.As described above, as the spatter can be reduced in CO 2 welding, interest in high speed welding has increased. In general, it is important to increase the current and decrease the voltage to increase the short circuit rate for CO 2 high-speed welding.However, if the welding voltage is set low, the rising current decreases during short-circuit, so that the arc does not regenerate and hit the molten pool. Stubbing phenomenon (long-term short) occurs, there is a problem such as undercut or humping bead due to the phenomenon such as short-circuit and long-term arc.

본 발명은 상기와 같은 문제점을 고려하여 이루어진 것으로, 본 발명의 목적은 단락시 전류상승기울기의 제어를 통하여 안정적인 고속용접이 가능하게 하는 GMA 고속용접을 위한 파형제어방법을 제공함에 있다.The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a waveform control method for GMA high-speed welding to enable a stable high-speed welding through the control of the current rise slope during short circuit.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명은 단락상태와 아크상태가 반복적으로 발생되어 단락이행을 수반하는 고속용접의 파형을 제어함에 있어서,In the present invention, which achieves the object as described above and performs the problem for eliminating the drawbacks of the related art, in the control of the waveform of the high speed welding in which a short circuit state and an arc state are repeatedly generated, which involves short circuit execution,

상기 단락상태시 용접전류를 150~300A/ms의 전류상승기울기를 유지하여 단락의 빠른 해소를 유도하는 제1 제어단계;A first control step of inducing a rapid elimination of a short circuit by maintaining a current rising slope of 150 to 300 A / ms in the short circuit state;

상기 제1 제어단계에 의해 아크가 발생된 후 8~12ms 시간을 지연시키는 제2 제어단계; 및A second control step of delaying a time of 8 to 12 ms after an arc is generated by the first control step; And

상기 제2 제어단계에 의한 시간지연에 이어 전류를 40~60A 감소시켜 단락을 유도하는 제3 제어단계;로 이루어진 GMA 고속용접을 위한 파형제어방법을 특징으로 한다.And a third control step of inducing a short circuit by reducing the current by 40 to 60 A after the time delay caused by the second control step.

이하, 본 발명의 바람직한 실시 예를 첨부된 도면과 연계하여 상세히 설명하면 다음과 같다. 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

본 발명은 고속용접시 나타나는 현상에 대하여 용접파형과 고속촬영 영상을 통하여 분석하고, 이에 기초하여 단락상태시 단락전류상승기울기 및 재아크 발생 후 순간단락과 장기아크를 억제하기 위하여 일정시간 경과 후 전류를 감소시킴으로써 고속용접시 발생되는 각종 결함을 억제하는 GMA 고속용접의 파형제어방법임에 유의해야 한다.The present invention analyzes the phenomenon appearing during high-speed welding through the welding waveform and high-speed photographing image, and based on this, the current after a certain time to suppress the short circuit and long-term arc after short circuit current rising slope and re-arc in the short-circuit state It is to be noted that the waveform control method of GMA high speed welding suppresses various defects generated during high speed welding by reducing.

도 1은 본 발명의 바람직한 실시 예에 따른 파형제어의 개념도를 도시하고 있다. 도 1을 참조하면, 본 발명의 바람직한 실시 예에 따른 파형제어방법은 단락상태시 전류상승기울기를 150~300A/ms로 유지하여 단락의 빠른 해소를 유도하여 스터빙을 억제하는 제1 제어단계와, 아크 발생 후 8~12ms 시간을 지연시킨 다음 전류를 40~60A로 감시킴으로써 단락을 유도하여 순간단락 및 장기아크를 억제하는 제2,3 제어단계가 반복적으로 수행됨으로써 고속용접시 발생되는 스터빙과 순간단락 및 장기아크 등을 억제하도록 구성되어 있다.1 is a conceptual diagram of waveform control according to a preferred embodiment of the present invention. Referring to Figure 1, the waveform control method according to a preferred embodiment of the present invention is a first control step of suppressing stubbing by inducing a quick resolution of the short circuit by maintaining the current rise slope at 150 ~ 300A / ms in a short circuit state; After the arc is generated, the delay of 8 ~ 12ms is delayed, and then the current is reduced to 40 ~ 60A. Thus, the second and third control steps to suppress the short circuit and long-term arc are repeatedly performed. It is configured to suppress the short circuit and the long term arc.

도 2는 고속용접시 발생하는 순간단락과 장기아크 현상을 보여주는 동기화된 고속영상과 용접파형을 나타낸 것으로, 일반 인버터형 용접기를 사용하여 2.5m/min의 속도로 비드 온 플레이트(bead-on-plate) 용접을 실시한 것이며, 이때의 용접전류와 전압은 173A 및 19V이고, WFS : 5.5m/min 및 CTWD : 12mm으로 하였다. 도 2를 참조하면, ①~⑦기간동안은 순간단락과 장기아크로인하여 용적이 용융풀로 이행되지 못하고 용적이 점점 거대화되는 것을 볼 수 있으며, ⑧에 이르러서 큰 용적이 중력에 의하여 정상단락으로 용적이 이행되고 있는 것을 확인할 수 있다. 이로 인 하여 연속적인 순간단락과 장기아크가 발생되는 용접구간은 용적이 이행되지 못하여 오목한 비드가 형성되며, 조대해진 용적이 단락이행 되는 시점은 볼록한 비드가 형성되어 험핑비드(humping bead) 또는 언더컷(under cut)을 발생시키게 된다.FIG. 2 shows a synchronized high speed image and a welding waveform showing a short-circuit and long-term arcing phenomenon occurring during high-speed welding, and using a general inverter welding machine, a bead-on-plate at a speed of 2.5 m / min. The welding current and voltage at this time were 173A and 19V, and WFS: 5.5 m / min and CTWD: 12 mm. Referring to Figure 2, it can be seen that the volume is not transferred to the molten pool due to the short-circuit and long-term arc during ① ~ ⑦ period, the volume is gradually increased, the large volume is reached to the normal short circuit by gravity due to ⑧ We can confirm that it is carried out. As a result, the weld section in which continuous short-circuit and long-term arc are generated is not conducive to volume, and concave beads are formed, and when the coarse volume is short-circuited, convex beads are formed, resulting in humping bead or undercut ( under cut).

상기와 같은 순간단락과 장기아크는 저속용접 보다 고속용접에서 보다 많이 발생된다. 이는 저속용접의 경우, 고속용접에 비해 입열량이 많기 때문에 용융풀의 유동이 고속용접 보다 활발하게 일어나게 되고, 이에 따라 용적과 용융풀이 충분히 접촉하여 정상적인 단락을 유도하기 때문이다. 그러나 고속용접에서는 모재에 용융풀이 적게 형성되기 때문에 용융풀의 유동이 적어지게 되므로, 용적과 용융풀이 충분히 접촉하지 못하게 됨으로써 순간단락 및 장기아크가 자주 발생하게 되는 것이다.Such short-circuit and long-term arcs are more generated in high speed welding than in low speed welding. This is because, in the case of low speed welding, the flow of the molten pool is more active than the high speed welding because the amount of heat input is higher than that of the high speed welding, and thus the volume and the molten pool are sufficiently in contact with each other to induce a normal short circuit. However, in the high-speed welding, since the molten pool is formed in the base material, the flow of the molten pool is reduced, so that the short-term and long-term arc often occur because the volume and the molten pool are not sufficiently contacted.

이에 본 발명은 아크발생 후 일정시간을 지연시킨 다음 전류를 감소시켜 단락을 촉진시키도록 한 것이다.Therefore, the present invention is to delay the predetermined time after the arc generation to reduce the current to promote a short circuit.

일반적으로 사용하는 용접기로 고속용접을 위해서는 통상 속도의 용접시보다 전압을 낮추어 빠른 단락을 유도한다. 그러나 1.5m/min 이상 용접속도가 증가하게 되면 스터빙 현상이 발생되어 온전한 용접이 되지 않는다.For high speed welding with a commonly used welding machine, a short circuit is induced by lowering the voltage than a normal welding speed. However, if the welding speed is increased more than 1.5m / min, stubbing occurs, and the whole welding is not performed.

도 3은 고속용접시 발생하는 스터빙 현상을 보여주는 동기화된 고속영상과 용접파형을 나타낸 것이다. 일반적으로 스터빙 현상은 단락이행에서 고속용접시 전압이 낮게 설정됨에 따라 용접기의 출력이 작아져 전류도 같이 낮아지게 되어 단락시 전류상승기울기가 높게 제어되지 못해 발생하게 된다. 즉 전류가 낮아지면 용접와이어의 용융속도가 저하되고, 이에 송급된 와이어가 충분히 용융되지 못하기 때 문에 와이어의 송급속도에 비해 용융속도가 느려져 아크의 길이가 점점 짧아지게 되고, 결국 ⑤와 같이 와이어가 용융풀에 박히는 스터빙(stubbing) 현상이 발생하게 된다. 스터빙 발생시 단락전류상승기울기가 낮으면 도 3의 ⑥과 같이 와이어의 중간부위가 주울열로 인하여 파단되면서 아크가 끊기게 된다. 이와 같은 스터빙 현상은 고속용접에서 용접 비드가 형성되지 못하는 가장 큰 원인으로, 본 발명은 이러한 스터빙 현상을 억제하기 위하여 단락전류상승기울기를 제어함으로써 단락시 와이어의 용융속도를 높여 빠른 아크 재발생으로 일정길이 이상의 아크를 유지하도록 한 것이다.3 shows a synchronized high speed image and a welding waveform showing a stubbing phenomenon occurring during high speed welding. In general, the stubbing phenomenon occurs because the output of the welding machine becomes smaller and the current is lowered as the voltage is set lower during the high speed welding in the short circuit. In other words, as the current decreases, the melting speed of the welding wire decreases, and the wire fed thereto is not sufficiently melted, so the melting speed is slower than the feeding speed of the wire, and thus the arc length becomes shorter. Stubbing occurs when the wire gets stuck in the molten pool. If the shorting current rise slope is low when stubbing occurs, the arc breaks as the middle part of the wire breaks due to Joule heat, as shown in ⑥ of FIG. 3. This stubbing phenomenon is the biggest cause of the formation of welding beads in the high-speed welding, the present invention is to control the short-circuit current rise slope to suppress the stubbing phenomenon to increase the melting speed of the wire in the short circuit to the rapid arc regeneration It is to maintain the arc over a certain length.

다시 도 1을 참조하면, 상기 제1 제어단계는 단락상태에서 용접전류의 상승기울기를 150~300A/ms로 높여 와이어의 용융속도를 높임으로써 고속용접시 발생되는 스터빙 현상을 방지하도록 한 것이다. 이때 용접전류상승기울기가 150A/ms 미만일 경우, 와이어의 용융속도가 낮아지게 되어 단락해소를 느려지게 하므로 다량의 스터빙 발생하여 용접이 불가능해지며, 300A/ms 초과할 경우, 단락해소 과도한 아크력으로 인해 다량의 스패터 발생과, 험핑비드의 발생으로 용접이 불가능한 문제점이 있다. 상기 제2,3 제어단계는 아크가 발생된 후 8~12ms 지연시킨 다음 전류를 40~60A 감소시킴으로써 단락을 유도하여 순간단락 및 장기아크를 억제하도록 한 것이다. 이때 지연시간이 8~12ms의 범위내에 들지 않으면 용적의 크기가 과도하게 크거나 작아지게 되어 건전한 용접이 불가능한 문제점이 있다.Referring back to Figure 1, the first control step is to prevent the stubbing phenomenon generated during high-speed welding by increasing the melt rate of the wire by increasing the rising slope of the welding current to 150 ~ 300A / ms in a short circuit state. At this time, if the welding current rising slope is less than 150A / ms, the melting speed of the wire is lowered and the short circuit resolution is slowed down, so a large amount of stubbing occurs, which makes welding impossible, and when it exceeds 300A / ms, the short circuit is excessive. Due to the large amount of spatter generated, there is a problem that welding is impossible due to the generation of humping beads. In the second and third control steps, the short circuit is induced by delaying 8 to 12 ms after the arc is generated and then reducing the current by 40 to 60 A to suppress the short circuit and the long-term arc. At this time, if the delay time does not fall within the range of 8 to 12 ms, the size of the volume becomes excessively large or small, and there is a problem that healthy welding is impossible.

도 4 내지 도 6은 상기와 같은 파형제어가 적용되었을 때와 제어가 이루어지지 않을 때, 각 용접조건별 용접비드의 상태를 비교하여 나타내고 있다. 도 4 내지 도 6에서 확인할 수 있는 바와 같이, 본 발명에 따른 파형제어가 이루어졌을 때 보다 건전한 용접비드를 얻을 수 있는 것으로 확인할 수 있으며, 2~3.5m/min 고속용접이 가능하게 됨을 알 수 있다.4 to 6 show the comparison of the state of the weld bead for each welding condition when the above-described waveform control is applied and when the control is not performed. As can be seen in Figures 4 to 6, when the waveform control according to the present invention can be confirmed that a healthy weld bead can be obtained, it can be seen that high-speed welding 2 ~ 3.5m / min is possible. .

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 범위 내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

본 발명은 상술한 바와 같이 용접전류의 제어를 통해 고속용접시 발생되는 스터빙 현상과 순간단락 및 장기아크 현상을 억제하여 안정적인 GMA 고속용접이 가능하게 되었다. 또한 안정된 고속용접의 가능으로 박판 용접시 생산성의 향상 및 이에 따른 원가 절감이 가능하게 되었다.As described above, the present invention enables stable GMA high-speed welding by suppressing the stubbing phenomenon and the short-circuit and long-term arcing phenomenon generated during high speed welding through the control of the welding current. In addition, the stable high speed welding enables the improvement of productivity and the cost reduction according to the thin plate welding.

Claims (1)

단락상태와 아크상태가 반복적으로 발생되어 단락이행을 수반하는 고속용접의 파형을 제어함에 있어서,In controlling the waveform of high-speed welding involving short-circuit and short-circuit and arc states, 상기 단락상태시 용접전류를 150~300A/ms의 전류상승기울기를 유지하여 단락의 빠른 해소를 유도하는 제1 제어단계;A first control step of inducing a rapid elimination of a short circuit by maintaining a current rising slope of 150 to 300 A / ms in the short circuit state; 상기 제1 제어단계에 의해 아크가 발생된 후 8~12ms 시간을 지연시키는 제2 제어단계; 및A second control step of delaying a time of 8 to 12 ms after an arc is generated by the first control step; And 상기 제2 제어단계에 의한 시간지연에 이어 전류를 40~60A 감소시켜 단락을 유도하는 제3 제어단계;로 이루어진 것을 특징으로 하는 GMA 고속용접을 위한 파형제어방법.And a third control step of inducing a short circuit by reducing the current by 40 to 60 A after the time delay caused by the second control step.
KR1020060016048A 2006-02-20 2006-02-20 Waveform control for high speed gma welding KR100668233B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020131199A (en) * 2019-02-13 2020-08-31 株式会社ダイヘン Arc-welding method
JP2020131200A (en) * 2019-02-13 2020-08-31 株式会社ダイヘン Arc-welding method
KR102477652B1 (en) * 2021-08-25 2022-12-14 창원대학교 산학협력단 Continuous metal deposition manufacturing method based on arc plasma and continuous metal deposition manufactured by the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020131199A (en) * 2019-02-13 2020-08-31 株式会社ダイヘン Arc-welding method
JP2020131200A (en) * 2019-02-13 2020-08-31 株式会社ダイヘン Arc-welding method
JP7188858B2 (en) 2019-02-13 2022-12-13 株式会社ダイヘン arc welding method
KR102477652B1 (en) * 2021-08-25 2022-12-14 창원대학교 산학협력단 Continuous metal deposition manufacturing method based on arc plasma and continuous metal deposition manufactured by the same

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