WO2013178028A1 - 一种应用脉冲电流的手弧焊接装置及其焊接方法 - Google Patents

一种应用脉冲电流的手弧焊接装置及其焊接方法 Download PDF

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Publication number
WO2013178028A1
WO2013178028A1 PCT/CN2013/076024 CN2013076024W WO2013178028A1 WO 2013178028 A1 WO2013178028 A1 WO 2013178028A1 CN 2013076024 W CN2013076024 W CN 2013076024W WO 2013178028 A1 WO2013178028 A1 WO 2013178028A1
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WIPO (PCT)
Prior art keywords
current
welding
segment
current value
output
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Application number
PCT/CN2013/076024
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English (en)
French (fr)
Chinese (zh)
Inventor
翁良轩
Original Assignee
江门市保值久机电有限公司
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
Priority claimed from CN 201220256344 external-priority patent/CN202780174U/zh
Priority claimed from CN201210178456.8A external-priority patent/CN102717170B/zh
Application filed by 江门市保值久机电有限公司 filed Critical 江门市保值久机电有限公司
Priority to JP2015514338A priority Critical patent/JP2015519203A/ja
Publication of WO2013178028A1 publication Critical patent/WO2013178028A1/zh

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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
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
    • B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits

Definitions

  • the invention relates to a hand arc welding device and a welding method of the hand arc welding device.
  • the basic working principle of electric welding is that we use the common 220V voltage or 380V industrial power, reduce the voltage through the pressure reducer in the electric welding machine, enhance the current, and make the electric energy generate huge arc heat to melt the steel, and the welding rod is integrated. Make the fusion between steel more.
  • Arc welding is currently the most widely used welding method, including: hand arc welding, submerged arc welding, tungsten gas shielded arc welding, plasma arc welding, melting pole Gas shielded welding, etc.
  • Hand arc welding is one of the earliest and most widely used welding methods in various arc welding methods. It is an electrode and a filler metal coated with a coating (coating) on the outside, and the arc is burned between the end of the electrode and the surface of the workpiece to be welded.
  • the coating (drug) can generate gas to protect the arc under the action of arc heat, and on the other hand can produce slag covering the surface of the molten pool to prevent the molten metal from interacting with the surrounding gas to form oxide; the slag is more important
  • the role is to produce a physical chemical reaction with the molten metal or to add alloying elements to improve the properties of the weld metal.
  • the hand arc welding equipment is simple, light and flexible, and can be applied to short-slit welding in maintenance and assembly, especially for hard-to-reach parts.
  • Hand arc welding with the corresponding electrode can be applied to most industrial carbon steel, stainless steel, cast iron, copper, aluminum, nickel and their alloys.
  • the common hand arc welding machines on the market mainly include DC welding machines and AC welding machines.
  • transformers and rectifier modules are arranged in the DC welding machine.
  • the AC power is input, after being transformed by the transformer, it is rectified by the rectifier, and the output is low voltage.
  • the direct current of the current is low.
  • the existing hand arc DC welding machine has an output current of not less than 120A during operation, and the output power is not less than 4000W.
  • the energy consumption is large.
  • the input voltage is 220V
  • the input current is about 20A, and the input current is large.
  • the object of the present invention is to provide a hand arc welding device using pulse current for welding and Welding method.
  • a hand arc welding device applying pulse current comprising a rectifier module, a waveform generator, a transformer and a secondary rectifier module connected in sequence, further comprising a control unit, wherein an output end of the control unit is connected to the waveform generator for controlling the generation of the waveform generator
  • the high frequency pulse waveform the input end of the rectifier module is connected to the power source, the output end of the secondary rectifier module is connected to the welding gun, and the output end of the secondary rectifier module is also connected to the input end of the control unit.
  • a waveform generator and a control unit are provided, and a pulse current is applied for welding to achieve an effect of saving energy and reducing input current.
  • the welding method of the above hand arc welding device comprises the following steps: 1.
  • the input alternating current is rectified to a direct current through a rectifying module; 2.
  • the direct current obtained in step 1 passes through a waveform generator, and the control unit controls the waveform generator to convert the direct current into a high voltage.
  • the high frequency pulse wave includes an arcing band t1 for the arc starting arc of the electrode and a working band of the periodic cycle, and the arcing band includes alternating peak segments It3 and trough t4,
  • the working band A period t2 includes a peak section IIt5 for a point arc, a middle section t6 for supplying an operating current, and a tail section t7 of a low current, the current value of the peak section It3 being equal to the current value of the peak section IIt5, the valley
  • the current value of the segment t4 is equal to the current value of the middle segment t6; 3.
  • the high-frequency pulse wave obtained in the step 2 passes through the transformer, and the current value is amplified according to the variable ratio; 4.
  • the pulsed current after the amplification in step 3 passes through the secondary rectifier module again. Rectification, the output is suitable for the output current used by the welding torch, and part of the output current is fed back to the control unit through the connection between the secondary rectifier module and the control unit, so that the control unit is further Good perfect high frequency pulse wave.
  • the current value of the peak segment It3 is not less than 100 A, preferably 160 A, and the duration of the peak segment It3 after outputting through the secondary rectifying module is 20 to 100 ms;
  • the current value of the segment t4 is 20 ⁇ 80A, preferably 70A, and the duration of the valley segment t4 after outputting through the secondary rectifier module is 50 ⁇ 200ms;
  • the duration of the arcing band t1 after outputting through the secondary rectifier module is 1000. ⁇ 3000ms.
  • the current value of the peak segment IIt5 is not less than 100A, preferably 160A, and the duration of the output of the peak segment IIt5 after passing through the secondary rectifier module is 20 ⁇ 100ms;
  • the current value of the middle segment t6 is 20 ⁇ 80A, Preferably, it is 70A, the duration of the middle segment t6 after outputting through the secondary rectifier module is 200 ⁇ 800ms;
  • the current value of the tail segment t7 is 0A, and the duration of the tail segment t7 after outputting through the secondary rectifier module is 200 ⁇ 800ms.
  • the welding method of the present invention outputs a pulse current for welding, and the pulse current includes an arcing band t1 and a working band.
  • the peak section It3 of the large current in the arc-inducing band t1 and the valley section t4 providing the working current are alternately arranged to ensure that the electrode has sufficient energy for arc-starting at the beginning of the operation, making the arc-trigger operation easier to succeed.
  • a period t2 of the working band includes a peak segment IIt5, a middle segment t6 and a tail segment t7, wherein the work is a peak segment IIt5 and a middle segment t6, and the peak segment IIt5 uses a large current point arc to enter the middle segment t6, and the current value is about a peak segment.
  • the working current of half of the current value of IIt5 supports the discharge of the electrode.
  • the current value of the tail section t7 is 0, which makes the electrode rest and reduces the average power of the working band.
  • the output current of the hand arc welding device using the pulse current of the present invention is half or less of the output power of the DC welding machine under the premise of obtaining the same welding effect, thereby greatly reducing the energy.
  • the output power is reduced to reduce the input current at the same time, so that the welding device of the invention is suitable for use in a home environment; and the reduction of the average operating current reduces the temperature between the welding rod and the base metal during welding, and is not easy to burn through the base material.
  • the welding apparatus of the present invention can be used for thin plate welding.
  • the starting segment of the arcing band t1 is the valley segment t4, and in the valley segment t4, the electrode is preheated, thereby avoiding the situation that the starting current is excessively large and the electrode is stuck on the base material.
  • the frequency of the high-frequency pulse wave is 20 kHz or more, and the higher the frequency of the pulse wave, the easier the voltage transformation process, the coil requirement of the transformer is reduced, and the volume and weight of the transformer are reduced, so that the present invention
  • the hand arc welding device is small in size and light in weight.
  • FIG. 1 is a block diagram of electrical principles of the present invention
  • Figure 2 is a graph showing the current waveform during operation of the welding apparatus of the present invention.
  • a hand arc welding device using a pulse current comprises a rectifier module 1, a waveform generator 2, a transformer 3, a secondary rectifier module 4 and a control unit 5, and the rectifier module 1 can be a bridge type Wave rectifier circuit for converting alternating current into direct current;
  • waveform generator 2 is MOSFET field effect transistor circuit or IGBT insulated gate bipolar transistor circuit for generating high frequency pulse waveform;
  • transformer 3 is step-down transformer; secondary rectification The module 4 is used for re-rectifying the current after the transformation, and outputting a current suitable for the welding torch;
  • the control unit 5 is a single-chip chip or a PLC chip and its peripheral circuits, and controls the waveform shape of the high-frequency pulse waveform according to the program input in the chip.
  • the rectifier module 1, the waveform generator 2, the transformer 3, and the secondary rectifier module 4 are sequentially connected, the input end of the rectifier module 1 is connected to the power source, and the output end of the secondary rectifier module 4 is connected to the torch, and the output of the control unit 5 is output.
  • the end is connected to the waveform generator 2, and the input end of the control unit 5 is connected to the output end of the secondary rectification module 4 for receiving the feedback output current and adjusting the waveform shape of the high-frequency pulse waveform according to the feedback circuit.
  • the welding method of the above hand arc welding device comprises the following steps: 1.
  • the input alternating current is rectified to direct current through the rectifying module 1; 2.
  • the direct current obtained in step 1 is passed through the waveform generator 2, and the waveform generator is controlled by the control unit 5 to direct current
  • the waveform is converted into a high-frequency pulse wave
  • FIG. 2 is a waveform of a high-frequency pulse wave including an arc-ignition band t1 for arc starting of the electrode and a working band of a periodic cycle.
  • the arcing band t1 includes alternating peak segments It3 and valleys t4, wherein the starting segment is the valley segment t4; the peak segment It3 has a current value of not less than 100A, preferably 160A, and the peak segment It3 passes through the secondary rectifying module 4
  • the duration of the output is 20 ⁇ 100ms, if 50ms is used; the current value of the valley segment t4 is 20 ⁇ 80A, preferably 70A, and the duration of the valley segment t4 after outputting through the secondary rectification module 4 is 50 ⁇ 200ms, such as Adopting 150ms; the duration of the arc-inducing band t1 after passing through the secondary rectification module 4 is 1000 ⁇ 3000ms, for example, 2000ms.
  • the period t2 of the operating band includes a peak segment IIt5 for the point arc, and the current value of the peak segment IIt5 is not less than 100A, preferably 160A, and the duration of the output of the peak segment IIt5 after passing through the secondary rectifying module 4 is 20 ⁇ 100ms, preferably equal to the time of the peak section It3; the middle period t6 for providing the working current, the current value of the middle section t6 is 20 ⁇ 80A, preferably 70A, and the duration of the middle section t6 after outputting through the secondary rectification module 4 For 200 ⁇ 800ms, if 500ms is used; the low current tail segment t7, the tail segment t7 has a current value of 0A, and the tail segment t7 passes through the secondary rectifier module 4 and outputs for a duration of 200 ⁇ 800ms, for example, 500ms.
  • the high-frequency pulse wave obtained in step 2 passes through the transformer 3, and the current value is amplified according to the variable ratio; 4.
  • the pulse current amplified in step 3 passes through the secondary rectification module 4, and is rectified again, and the output current suitable for the welding gun is output, part of The output current is fed back to the control unit through the connection between the secondary rectification module 4 and the control unit 5, so that the control unit 5 can better perfect the high-frequency pulse wave.
  • the stop time exceeds 1.3 of the last segment t7
  • the control unit 5 is automatically reset, and the welder re-enters the working band by the arcing band t1 at the next working time.
  • the welding method of the present invention outputs a pulse current for welding, and the pulse current includes an arcing band t1 and a working band.
  • the peak section It3 of the large current in the arc-inducing band t1 and the valley section t4 providing the working current are alternately arranged to ensure that the electrode has sufficient energy for arc-starting at the beginning of the operation, making the arc-trigger operation easier to succeed.
  • a period t2 of the working band includes a peak segment IIt5, a middle segment t6 and a tail segment t7, wherein the work is a peak segment IIt5 and a middle segment t6, and the peak segment IIt5 uses a large current point arc to enter the middle segment t6, and the current value is about a peak segment.
  • the working current of half of the current value of IIt5 supports the discharge of the electrode.
  • the current value of the tail section t7 is 0, which makes the electrode rest and reduces the average power of the working band.
  • the frequency of the high-frequency pulse wave is 20 kHz or more, and the higher the frequency of the pulse wave, the easier the voltage transformation process is, the coil requirement of the transformer 3 is reduced, and the volume and weight of the transformer 3 are reduced, so that
  • the hand arc welding device of the present invention is small in size and light in weight.
  • the output current of the hand arc welding device using the pulse current of the present invention is half or less of the output power of the DC welding machine under the premise of obtaining the same welding effect, thereby greatly reducing the energy.
  • the output power is reduced to reduce the input current at the same time, so that the welding device of the invention is suitable for use in a home environment; and the reduction of the average operating current reduces the temperature between the welding rod and the base metal during welding, and is not easy to burn through the base material.
  • the welding apparatus of the present invention can be used for thin plate welding.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)
  • Generation Of Surge Voltage And Current (AREA)
PCT/CN2013/076024 2012-06-01 2013-05-22 一种应用脉冲电流的手弧焊接装置及其焊接方法 WO2013178028A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015514338A JP2015519203A (ja) 2012-06-01 2013-05-22 パルス電流を適用する手アーク溶接装置およびその溶接方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN 201220256344 CN202780174U (zh) 2012-06-01 2012-06-01 一种应用脉冲电流的手弧焊接装置
CN201220256344.5 2012-06-01
CN201210178456.8 2012-06-01
CN201210178456.8A CN102717170B (zh) 2012-06-01 2012-06-01 一种应用脉冲电流的手弧焊接装置的焊接方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2571668C2 (ru) * 2014-02-25 2015-12-20 Общество с ограниченной ответственностью "Средневолжский Сертификационно-Диагностический Центр "Дельта" Способ дуговой сварки штучным покрытым электродом
RU2623533C1 (ru) * 2016-01-11 2017-06-27 Общество с ограниченной ответственностью "Средневолжский Сертификационно-Диагностический Центр "Дельта" Способ дуговой сварки штучными покрытыми электродами
RU2641216C2 (ru) * 2016-03-24 2018-01-16 Частное образовательное учреждение дополнительного профессионального образования Технический учебный центр "Спектр" Способ дуговой сварки штучным покрытым электродом
CN112894079A (zh) * 2021-01-18 2021-06-04 南通博锐泰焊接科技有限公司 数字化脉冲式直流手工电弧焊方法及应用其的电弧焊机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048468A (en) * 1974-10-25 1977-09-13 Clemente Maule D.C. arc welder with solid state components
GB2019135A (en) * 1978-04-12 1979-10-24 Migatronic Svejsemask Direct current arc welding apparatus
JPH03264168A (ja) * 1990-03-14 1991-11-25 Hitachi Seiko Ltd パルスアーク溶接用電源
CN101274384A (zh) * 2007-03-29 2008-10-01 株式会社神户制钢所 消耗电极式气体保护电弧焊控制装置及焊接控制方法
CN101543927A (zh) * 2008-03-28 2009-09-30 株式会社神户制钢所 焊接控制装置及焊接控制方法
CN102350569A (zh) * 2011-09-29 2012-02-15 熊猫电子集团有限公司 多功能数字化焊机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048468A (en) * 1974-10-25 1977-09-13 Clemente Maule D.C. arc welder with solid state components
GB2019135A (en) * 1978-04-12 1979-10-24 Migatronic Svejsemask Direct current arc welding apparatus
JPH03264168A (ja) * 1990-03-14 1991-11-25 Hitachi Seiko Ltd パルスアーク溶接用電源
CN101274384A (zh) * 2007-03-29 2008-10-01 株式会社神户制钢所 消耗电极式气体保护电弧焊控制装置及焊接控制方法
CN101543927A (zh) * 2008-03-28 2009-09-30 株式会社神户制钢所 焊接控制装置及焊接控制方法
CN102350569A (zh) * 2011-09-29 2012-02-15 熊猫电子集团有限公司 多功能数字化焊机

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2571668C2 (ru) * 2014-02-25 2015-12-20 Общество с ограниченной ответственностью "Средневолжский Сертификационно-Диагностический Центр "Дельта" Способ дуговой сварки штучным покрытым электродом
RU2623533C1 (ru) * 2016-01-11 2017-06-27 Общество с ограниченной ответственностью "Средневолжский Сертификационно-Диагностический Центр "Дельта" Способ дуговой сварки штучными покрытыми электродами
RU2641216C2 (ru) * 2016-03-24 2018-01-16 Частное образовательное учреждение дополнительного профессионального образования Технический учебный центр "Спектр" Способ дуговой сварки штучным покрытым электродом
CN112894079A (zh) * 2021-01-18 2021-06-04 南通博锐泰焊接科技有限公司 数字化脉冲式直流手工电弧焊方法及应用其的电弧焊机

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