CN1043458A - Improve the method for arcing initiation success rate - Google Patents
Improve the method for arcing initiation success rate Download PDFInfo
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- CN1043458A CN1043458A CN 88108547 CN88108547A CN1043458A CN 1043458 A CN1043458 A CN 1043458A CN 88108547 CN88108547 CN 88108547 CN 88108547 A CN88108547 A CN 88108547A CN 1043458 A CN1043458 A CN 1043458A
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- success rate
- welding
- initiation success
- arcing initiation
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Abstract
When connecing, improves a kind of gas metal-arc welding the method for arcing initiation success rate.At traditional slow wire feed and reduce on the basis of end of welding area of bed method, adopt higher voltage and electric capacity that the method for additional-energy is provided, the di/dt when making striking increases, the arcing initiation success rate in the time of can improving gas metal-arc welding greatly and connect.Circuit of the present invention is simple, and is with low cost.The device of the inventive method is applicable to CO
2, MIG, the MAG source of welding current, when the welding wire with φ 0.8～φ 1.2mm welded, even weld under little electric current, its arcing initiation success rate also can reach 100%.
Description
The present invention relates to a kind of method that gas metal-arc welding connects the striking performance that improves.
When gas metal-arc welding connect, striking all was to lean on the welding wire and the workpiece direct short-circuit starting the arc.Generally will be through the above short circuit ability success of secondary.At this moment with bigger sound and oarse-grained splashing.Even there be whole section quick-fried disconnected welding wire to adhere on workpiece or the nozzle.Sometimes also can burn out ignition tip or make welding wire and ignition tip clings and can not weld.When splashing during striking both worsened workpiece and working condition and also increased fettler.Especially bigger to the harm of robot or automatic machine, increased their fault rate.
At present all be engaged in the research work of this respect both at home and abroad.At present the method that generally adopts has slow wire feed, and high voltage strengthens the control of di/dt(striking inductance), hot striking control reduces welding wire termination bead size, blows the gas of easily ionizable to arc region, extracts the heat of ignition tip, strengthens methods such as welding wire local electrical resistance." high-performance CO as hill show row etc.
2Automatically weld machine " パ Na オ-ト S " シ リ-ズ " (National Technical Report Vol.26 No.4) introduced the control device that adopts the striking inductance, " Steuerung des Z ü ndvorganges beim MAG Schwei-Ben " (ZIS-Mitteilungen of V.G.Hesse etc., 1981, No.12.Pl391～1403) introduce and adopt the residual molten drop eliminated on the welding wire termination, in arc process, reduce wire feed rate, improve electric current rate of climb di/dt and improve floating voltage U
0Method.These methods have improved arcing initiation success rate to a certain extent.Especially better effects if when the several method integrated application.But these methods one are circuit or complex structure, the more important thing is that an arcing initiation success rate only is 0～90%.Still can not meet the demands.
The objective of the invention is to above-mentioned traditional striking method is improved, make it arcing initiation success rate reach 100% and circuit simple, with low cost.
The present invention is achieved in that
Still keep traditional slow wire feed among the present invention and reduce two kinds of measures of welding wire termination bead size.But key of the present invention is to adopt the method for the additional-energy of the di/dt increase when making striking, and this additional-energy provides by higher voltage and electric capacity, and this auxiliary voltage is less than 90V, and additional capacitor is greater than 7000 μ f.
The present invention is owing to adopted the method for additional-energy, and the di/dt when making striking increases, and therefore makes the success rate of a striking of gas metal-arc welding reach 100%.
Accompanying drawing is for realizing the installation drawing of the inventive method.
Below in conjunction with a kind of device details and working condition that realizes the inventive method of description of drawings:
Part among the figure in the frame of broken lines is and realizes device of the present invention.Q is for starting the switch (on welding gun) that welding machine is used in the accompanying drawing.When welding machine is connected power supply, transformer B energising, rectifier bridge D
2Charge to capacitor group C by resistance R.When arc welding gun switch Q was pressed, the time relay sj on-delay began and contactor CJ adhesive, and the voltage of electric capacity is added on ignition tip (3) and the workpiece (2) by the normally opened contact of contactor CJ.When the moment that Q is pressed, the source of welding current (1) has voltage output, through diode D
1Be added on ignition tip (3) and the workpiece (2), welding wire (4) is sent to downwards simultaneously, in case with workpiece (2) short circuit then the energy on the capacitor C discharge immediately.Very big di/dt ignites electric arc immediately.After electric arc ignited, time relay delay time arrived, the time relay sj action.Normally-closed contact SJ disconnects, contactor CJ outage.Contactor CJ normally opened contact is thrown off capacitor C and ignition tip (3) to guarantee safety, diode D
1Can guarantee that the source of welding current (1) is not subjected to the influence of capacitor C.
Device of the present invention is applicable to CO
2, MIG, the MAG source of welding current, with the welding of φ 0.8～1.2mm welding wire the time, selecting electric capacity is 10000 μ f, and voltage is 90V, and resistance R is 50～100 Ω, rectifier bridge D
2Be 2A200V,, also can make an arcing initiation success rate reach 100% even adopt little current arc ignition.
Claims (3)
- Improve the method for arcing initiation success rate when 1, a kind of gas metal-arc welding connects; welding machine is at original slow wire feed and reduce on the basis of welding wire termination bead size; the method of the additional-energy that the di/dt when employing makes striking increases, this additional-energy provides by higher voltage and electric capacity.
- 2, method according to claim 1 is characterized in that, auxiliary voltage is less than 90V, and additional capacitor is greater than 7000 μ f.
- 3, method according to claim 1 is characterized in that, and is safe and reliable in order to use, and adopts diode and contactor normally opened contact to protect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108547 CN1043458A (en) | 1988-12-20 | 1988-12-20 | Improve the method for arcing initiation success rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108547 CN1043458A (en) | 1988-12-20 | 1988-12-20 | Improve the method for arcing initiation success rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1043458A true CN1043458A (en) | 1990-07-04 |
Family
ID=4835103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88108547 Pending CN1043458A (en) | 1988-12-20 | 1988-12-20 | Improve the method for arcing initiation success rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1043458A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735735A (en) * | 2017-02-20 | 2017-05-31 | 上海威特力焊接设备制造股份有限公司 | Arc device and method is received in a kind of pulse gas-shielded weldering |
| CN106925865A (en) * | 2017-02-20 | 2017-07-07 | 上海威特力焊接设备制造股份有限公司 | A kind of gas shielded arc welding receives arc device and method |
| CN108127220A (en) * | 2017-12-20 | 2018-06-08 | 唐山松下产业机器有限公司 | The striking method of pulsed gas metal arc welding |
-
1988
- 1988-12-20 CN CN 88108547 patent/CN1043458A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735735A (en) * | 2017-02-20 | 2017-05-31 | 上海威特力焊接设备制造股份有限公司 | Arc device and method is received in a kind of pulse gas-shielded weldering |
| CN106925865A (en) * | 2017-02-20 | 2017-07-07 | 上海威特力焊接设备制造股份有限公司 | A kind of gas shielded arc welding receives arc device and method |
| CN108127220A (en) * | 2017-12-20 | 2018-06-08 | 唐山松下产业机器有限公司 | The striking method of pulsed gas metal arc welding |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| RJ01 | Rejection of invention patent application after publication |