CN101391337A - Welding starting method of double-wire welding - Google Patents
Welding starting method of double-wire welding Download PDFInfo
- Publication number
- CN101391337A CN101391337A CNA2008101608269A CN200810160826A CN101391337A CN 101391337 A CN101391337 A CN 101391337A CN A2008101608269 A CNA2008101608269 A CN A2008101608269A CN 200810160826 A CN200810160826 A CN 200810160826A CN 101391337 A CN101391337 A CN 101391337A
- Authority
- CN
- China
- Prior art keywords
- welding
- silk
- electric arc
- mentioned
- consumable electrode
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Landscapes
- Arc Welding In General (AREA)
Abstract
The invention provides a start welding method for two-wire welding, wherein a welding line with enough bonding strength is formed after welding starts. Electric arc (2A) is generated from a wire (WA) as a wire (WB) is fed to the wire (WA) from back along the welding direction, which comprises a step of welding by electric arc (2A, 2B) and a step of welding only by electric (2A) through quenching the electric arc (2B). Enough heat is transferred to welding base metal (P) after welding starts so that enough width is provided at the beginning end of the welding line (Wp).
Description
Technical field
The present invention relates to use the welding start method of the double wire welding of consumable electrode silk and filling silk.
Background technology
The double wire welding of well-known use consumable electrode silk and filling silk is the good welding method (for example, patent documentation 1) of outward appearance that is suitable for improving speed of welding and weld seam.Fig. 4 is the figure that represents an example of double wire welding in the past.In the double wire welding shown in this figure, use to possess contact core 91A, the welding gun of 91B.Silk WA is supplied to by contact core 91A.In addition,, fill silk WB and be supplied to along the welding direction rear at silk WA by contact core 91B.
Contact core 91A is connected with the source of welding current (diagram slightly).This source of welding current is to applying voltage between contact core 91A and the welding base metal P.Thus, produce from the electric arc 92 of silk WA to welding base metal P.Silk WA is supplied to from feedway (diagram slightly) with the speed corresponding with the intensity of electric arc 92.On the other hand, fill silk WB, be fed to the molten bath Mp that is generated by electric arc 92 by feed apparatus (diagram slightly).Filling silk WB is owing to the heat of molten bath Mp melts.Its result, the silk WA after the fusing, filling silk WB and welding base metal P solidify under alloy state, form weld seam Wp thus.According to such double wire welding,, can prevent that also weld seam Wp is narrow terrifically even set speed of welding than higher.In addition, under the state that does not produce electric arc, fill silk WB, can obtain the outward appearance of good weld seam Wp by giving.
But, when the welding of above-mentioned double wire welding begins, after producing electric arc 92, above-mentioned welding gun is moved on welding direction.Therefore, the part of contact welding starting position among the welding base metal P, the input heat that is produced by electric arc 92 is sufficient inadequately.So, be difficult to form enough big molten bath Mp, can not promote to fill the fusing of a WB.Its result, as shown in Figure 5, near the narrowed width starting end of weld seam Wp.The hot strength that has the welding portion that reduces welding base metal P like this, the problem that cracks.
Patent documentation 1: the spy opens communique 2006-No. 175458
Summary of the invention
The present invention considers above-mentioned situation and makes that its purpose is to provide a kind of welding start method that can form the double wire welding of the weld seam with enough bond strengths after the welding beginning.
The welding start method of double wire welding provided by the present invention, it is by applying voltage between consumable electrode silk and welding object thing, produce electric arc by above-mentioned consumable electrode silk on one side, on welding direction, advance on one side, and above-mentioned consumable electrode silk is supplied with the filling silk from the welding direction rear, it is characterized in that, possess: with producing electric arc by above-mentioned consumable electrode silk, to applying voltage between above-mentioned filling silk and the above-mentioned welding object thing, thus by above-mentioned filling silk generation electric arc, by from the electric arc of above-mentioned consumable electrode silk and the step of welding from the electric arc of above-mentioned filling silk; And by making the electric arc blow-out from above-mentioned filling silk, the only step of welding by electric arc from above-mentioned consumable electrode silk.
According to such formation,, shine two electric arcs by in from the electric arc of above-mentioned consumable electrode silk and the step of welding from the electric arc of above-mentioned filling silk.Thus, in the welding starting position of above-mentioned welding object thing, can import enough heats after the welding beginning certainly.Therefore promote the formation in molten bath, above-mentioned consumable electrode silk and above-mentioned filling silk after the fusing of supply q.s.Therefore, can will schedule and the almost constant width of stable weld part near the welding starting end of weld seam, can improve the hot strength of above-mentioned welding object thing.
In the preferred embodiment of the present invention, also have by before from the electric arc of above-mentioned consumable electrode silk and the step of welding from the electric arc of above-mentioned filling silk, only produce step from the electric arc of above-mentioned consumable electrode.According to such formation, when above-mentioned filling silk made the electric arc starting the arc, the electric arc by from the above-mentioned consumable electrode silk of adjacency had formed so-called plasma air atmosphere space in the positive lower part of above-mentioned filling silk.Thus, can make rapidly and the starting the arc stably from the electric arc of above-mentioned filling silk.
Further feature of the present invention and advantage are elaborated following with reference to accompanying drawing, thus can be clearer and more definite.
Description of drawings
Fig. 1 is the system appearance sketch map that is illustrated in an example of employed welding system in the welding start method of the relevant double wire welding of the present invention.
Fig. 2 is the sequential chart of an example of the welding start method of the relevant double wire welding of expression the present invention.
Fig. 3 is a routine major part vertical view of expression formed weld seam of welding start method of relevant double wire welding according to the present invention.
Fig. 4 is a major part profile of representing an example of double wire welding in the past.
Fig. 5 is the major part vertical view of an example of the expression basis formed weld seam of double wire welding in the past.
Symbol description among the figure:
The A welding system
The B welding gun
INVA, INVB output control circuit
ISA, ISB welding current initialization circuit
ISa, ISb welding current setting signal
IWa, IWb welding current
The Mp molten bath
P welding base metal (welding object thing)
PSA, the PSB source of welding current
STA, STB timer
Stb electric arc blow-out signal
VSA, VSB weldingvoltage initialization circuit
Vsa, Vsb weldingvoltage setting signal
VWa, VWb weldingvoltage
WA (consumable electrode) silk
WB fills silk
WFA, WFB silk feed apparatus
The Wp weld seam
WSA, WSB give the speed initialization circuit
Wsa, Wsb give rate setting signal
1A, 1B contact core
2A, 2B electric arc
Concrete form of implementation
Below, with reference to accompanying drawing the preferred embodiment of the present invention is carried out specific description.
Fig. 1 is the figure of welding system that is used for the welding start method of the relevant double wire welding of the present invention.The welding system A of present embodiment possesses welding gun B; Silk feed apparatus WFA, WFB; Source of welding current PSA, PSB.Welding system A uses a silk WA and a filling silk WB as the consumable electrode silk to carry out double wire welding.
Welding gun B for example is the nozzle of general cylindrical shape shape, usually is installed in the robot (diagram slightly).Welding gun B has contact core 1A, 1B.Contact core 1A has the through hole that can insert a WA, with silk WA conducting.Contact core 1B has can insert the through hole of filling silk WB, with a filling silk WB conducting.In the double wire welding of using welding gun B, a silk WA is positioned at welding direction the place ahead, fills silk WB and is positioned under the state at rear of welding direction, by the mobile welding gun B on welding direction of above-mentioned robot.
Silk feed apparatus WFA, WFB are to be respectively applied for the device of supplying with silk WA, WB, for example have motor drive sources such as (diagram slightly).Silk feed apparatus WFA, WFB according to the instruction from source of welding current PSA, PSB, give a WA and fill silk WB with the speed of giving that meets welding condition.
Source of welding current PSA, PSB are the power supplys that is used for taking place from silk WA and filling silk WB electric arc, possess output control circuit INVA, INVB respectively; Weldingvoltage initialization circuit VSA, VSB; Welding current initialization circuit ISA, ISB; Timer STA, STB; And give speed initialization circuit WSA, WSB.
Output control circuit INVA, INVB make contact core 1A and contact core 1B and welding base metal P conducting, apply weldingvoltage VWa, VWb betwixt.Applying under the state that welds voltage VWa, VWb, when electric arc 2A, 2B take place, flowing through welding current IWa, IWb.VSA sends to output control circuit INVA with weldingvoltage setting signal Vsa from the welding voltage setting circuit, welds current setting circuit ISA certainly welding current setting signal Isa is sent to output control circuit INVA.Equally, weldingvoltage setting signal Vsb is sent to output control circuit INVB, weld current setting circuit ISB certainly welding current setting signal Isb is sent to output control circuit INVB from weldingvoltage initialization circuit VSB.In addition, self clock device STA sends to output control circuit INVA with electric arc blow-out signal Sta, and self clock device STB sends to output control circuit INVB with electric arc blow-out signal Stb.Giving speed initialization circuit WSA, WSB is the circuit of respectively silk feed apparatus WFA, WFB being given rate setting signal Wsa, Wsb.
Then, with reference to Fig. 2 the welding start method of the double wire welding of use welding system A is described following.
At first, at moment t1, according to the indication of giving rate setting signal Wsa, slow deceleration (slow down) speed when being set at the speed of the giving FWa of silk WA than stable welding begins to give a WA with this speed.At this moment, setting weldingvoltage VWa is non-load voltage.And at moment t2, when producing electric arc 2A, the voltage when weldingvoltage VWa is set in stable welding begins to flow through welding current IWa.In addition, give speed FWa and be set at stable speed of welding.Thus, the silk WA after the fusing begins to shine welding base metal P with electric arc 2A.According to heat, on welding base metal P, begin to form molten bath Mp from electric arc 2A.
In addition, with the starting the arc while of electric arc 2A, beginning welding gun B moves.And then at moment t2, VWb is made as non-load voltage with weldingvoltage, and the speed of the giving FWb that will fill silk WB according to the indication of giving rate setting signal Wsb is set at geard-down speed.Thus, begin to give a filling silk WB with geard-down speed.So at moment t3, electric arc 2B carries out the starting the arc between filling silk WB and welding base metal P.And the voltage when weldingvoltage VWb is set at stable welding flows through welding current IWb.In addition, will give speed FWb and be set at tandem (tandem) speed of welding.Thus, welding gun B shines two electric arc 2A, the so-called tandem welding of 2B.
Then, carry out timing by timer STB, when having passed through the time of subscribing, Stb sends to output control circuit INVB with electric arc blow-out signal.Thus, at moment t4, weldingvoltage VWb is made as 0, electric arc 2B blow-out.Size when on the other hand, weldingvoltage VWa remains on stable the welding.Its result after moment t4, becomes the limit and gives a WA and fill silk WB, and the welding manner of electric arc 2A is only shone on the limit.By continuing and stablely welding, welding formation weld seam Wp on the mother metal P.
Exemplify an example of the welding condition of this welding, welding base metal P is the SPCC material of thickness of slab 1.6mm, and welding manner is a banjo fixing butt jointing.A silk WA and a filling silk WB are quite product of YGW-15 (JIS specification), and diameter is 1.2mm.The speed of giving FWa during stable the welding is the 12m/ branch, and the speed of the giving FWb during the tandem welding is the 3m/ branch, and the translational speed of welding gun B is that speed of welding is the 150cm/ branch.As protective gas, the mist of 80%Ar+20%CO2 is supplied with the flow that 40L/ divides.
Then, the effect to the welding start method of the relevant double wire welding of the present invention describes.
According to present embodiment, to moment t4, not only, also shine from the electric arc 2B that fills silk WB from the silk WA irradiation electric arc 2A of consumable electrode silk from moment t3.Thus, in the welding starting position of welding base metal P, after the welding beginning, just can import enough heats.Therefore, promote the formation of molten bath Mp, silk WA after the fusing of supply q.s and filling silk WB.Thereby, as shown in Figure 3, can make near the welding starting end of weld seam Wp, become and the almost constant width of stable weld part, improve the hot strength of welding base metal P.When stable welding, because electric arc 2B, therefore fills the heat fusing of marginization of silk WB by molten bath Mp by blow-out, the limit is supplied with more stable state.Help obtaining the outward appearance of good weld seam Wp like this.
In addition,, make the order of the electric arc 2B starting the arc, when making the electric arc 2B starting the arc, formed so-called plasma atmosphere space in the positive lower part of filling silk WB by electric arc 2A according to making after the electric arc 2A starting the arc.Can make electric arc 2B fast and the starting the arc stably thus.
The welding start method of the double wire welding that the present invention is relevant is not to be confined to above-mentioned embodiment.There are various design alterations in the concrete formation of the welding start method of the double wire welding that the present invention is relevant.
Preferably make the moment of the electric arc 2B starting the arc, after the electric arc 2A starting the arc, still, the present invention is not limited thereto as mentioned above, for example also can make electric arc 2A, the 2B starting the arc simultaneously.
Claims (2)
1, a kind of welding start method of double wire welding, it is by applying voltage, on one side by above-mentioned consumable electrode silk generation electric arc between consumable electrode silk and welding object thing, on welding direction, advance on one side, and above-mentioned consumable electrode silk is supplied with the filling silk from the welding direction rear, it is characterized in that
Possess: with producing electric arc by above-mentioned consumable electrode silk, to applying voltage between above-mentioned filling silk and the above-mentioned welding object thing, thus by above-mentioned filling silk generation electric arc, by from the electric arc of above-mentioned consumable electrode silk and the step of welding from the electric arc of above-mentioned filling silk; And
By making the electric arc blow-out from above-mentioned filling silk, the only step of welding by electric arc from above-mentioned consumable electrode silk.
2, the welding start method of double wire welding according to claim 1 is characterized in that,
Also have by before, only produce step from the electric arc of above-mentioned consumable electrode silk from the electric arc of above-mentioned consumable electrode silk and the step of welding from the electric arc of above-mentioned filling silk.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007243355 | 2007-09-20 | ||
| JP2007243355A JP2009072809A (en) | 2007-09-20 | 2007-09-20 | Method of starting welding in two-wire welding |
| JP2007-243355 | 2007-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101391337A true CN101391337A (en) | 2009-03-25 |
| CN101391337B CN101391337B (en) | 2013-04-24 |
Family
ID=40491953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810160826 Active CN101391337B (en) | 2007-09-20 | 2008-09-16 | Welding starting method of double-wire welding |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2009072809A (en) |
| CN (1) | CN101391337B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069265A (en) * | 2010-12-23 | 2011-05-25 | 哈尔滨工业大学 | Dynamic twin-wire three-arc welding method |
| CN102922088A (en) * | 2011-08-08 | 2013-02-13 | 株式会社大亨 | Double wire welding control method |
| CN103028812A (en) * | 2011-09-30 | 2013-04-10 | 株式会社大亨 | Arc crater control method for double-solder-wire soldering |
| CN103028822A (en) * | 2011-09-30 | 2013-04-10 | 株式会社大亨 | Double-wire welding starting method |
| CN103648701A (en) * | 2011-07-01 | 2014-03-19 | 林肯环球股份有限公司 | Tandem strip cladding method, apparatus and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5888806B2 (en) * | 2011-09-27 | 2016-03-22 | 株式会社ダイヘン | Welding start method of 2-wire welding |
-
2007
- 2007-09-20 JP JP2007243355A patent/JP2009072809A/en active Pending
-
2008
- 2008-09-16 CN CN 200810160826 patent/CN101391337B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069265A (en) * | 2010-12-23 | 2011-05-25 | 哈尔滨工业大学 | Dynamic twin-wire three-arc welding method |
| CN102069265B (en) * | 2010-12-23 | 2012-08-22 | 哈尔滨工业大学 | Dynamic twin-wire three-arc welding method |
| CN103648701A (en) * | 2011-07-01 | 2014-03-19 | 林肯环球股份有限公司 | Tandem strip cladding method, apparatus and system |
| CN102922088A (en) * | 2011-08-08 | 2013-02-13 | 株式会社大亨 | Double wire welding control method |
| CN102922088B (en) * | 2011-08-08 | 2016-06-29 | 株式会社大亨 | Double-wire welding control method |
| CN103028812A (en) * | 2011-09-30 | 2013-04-10 | 株式会社大亨 | Arc crater control method for double-solder-wire soldering |
| CN103028822A (en) * | 2011-09-30 | 2013-04-10 | 株式会社大亨 | Double-wire welding starting method |
| CN103028812B (en) * | 2011-09-30 | 2016-05-11 | 株式会社大亨 | The arc crater control method of two welding wire welding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101391337B (en) | 2013-04-24 |
| JP2009072809A (en) | 2009-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101391337B (en) | Welding starting method of double-wire welding | |
| CN1871093B (en) | Method for controlling a welding process and welding device for carrying out a welding process | |
| JP5199802B2 (en) | 2-wire welding method | |
| JP2009208137A (en) | Plasma mig welding method | |
| JP4844564B2 (en) | Arc welding control method | |
| CN101422841B (en) | Welding start method of double-wire welding | |
| CA2712473A1 (en) | Method and system to increase heat input to a weld during a short-circuit arc welding process | |
| JP2006075904A (en) | Hybrid laser/mig welding method with high wire speed | |
| KR100956577B1 (en) | Tandem arc welding device | |
| JP2010247187A (en) | High-speed welding equipment and welding method thereof | |
| CN101422842B (en) | Welding start method of double-wire welding | |
| JP5410121B2 (en) | Arc start control method for two-electrode arc welding | |
| KR101687507B1 (en) | Arc welding method and arc welding arrangement with first and second electrodes | |
| CN102161125B (en) | Arc-starting method for multi-electrode single-side welding device and multi-electrode single-side welding device | |
| JPH10113771A (en) | Device for feeding wire for plural electrode gas shield arc weldings | |
| JP2007229808A (en) | Process for terminating two-electrode arc welding | |
| JP2001113373A (en) | Method for controlling of tandem arc welding | |
| JP2003145270A (en) | Method for terminating consumable two-electrode arc welding | |
| JP5808958B2 (en) | Arc welding method | |
| JP2002361413A (en) | Method for completing consumable two-electrode arc welding, method for controlling completion of welding, and welding robot | |
| CN106624265A (en) | Method for arc 3D printing of space net structural component | |
| CN101992335A (en) | Arc-welding method and arc-welding system | |
| Somoskői et al. | CMT pin–Define the shape of the welded pin through welding parameters | |
| CN203649603U (en) | Automobile brazing device | |
| KR20120105263A (en) | Electro gas welding method using insert wires |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |