CN1817550B - Tubular wire rod for double-electrode gas protective welding - Google Patents
Tubular wire rod for double-electrode gas protective welding Download PDFInfo
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- CN1817550B CN1817550B CN2006100597107A CN200610059710A CN1817550B CN 1817550 B CN1817550 B CN 1817550B CN 2006100597107 A CN2006100597107 A CN 2006100597107A CN 200610059710 A CN200610059710 A CN 200610059710A CN 1817550 B CN1817550 B CN 1817550B
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Images
Classifications
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- 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
- B23K9/121—Devices for the automatic supply of at least two electrodes one after the other
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a flux-cored wire, which the vertical one pass welding of a thick steel plate in two-electrode electrogas arc welding, and to provide a method and equipment for two-electrode electrogas arc welding.In a two-electrode electro-gas arc welding, the welding wire of the surface side is vibrated in the plate thickness direction and welding is executed with the polarity of the welding wires reversed. In addition, for the welding wires 4, 5, a flux-cored wire is used containing, each in mass % in the total mass of the wire, 1.5-2.5% Mn, 0.10-1.00% SiO2, 0.5-3.0% Ni, 0.10-0.50% Ti, and 0.004-0.020% B. Therefor,provides a flux-cored wire that enable excellent welding working properties and improved low temperature toughness.
Description
Technical field
The present invention relates to a kind of tubular wire rod for double-electrode gas protective welding that welds a vertical position welding welding bead of steel plate.
Background technology
The gas shield welding can be used in the every field such as boats and ships, oil storage filling and bridge as a kind of high efficiency vertical position welding method, has very big contribution for the reasonability of welding and the stabilisation of seam quality.Especially at ship domain, be applicable to welding as the utmost point slab of thickness of slab more than 50mm such as the outwale of all-container ship and hatch coaming boards.
But in the welding method for this utmost point slab, the welding method of former single electrode single pass welding except speed of welding is very low, also easily produces and merges defectives such as bad.In order to eliminate these problems and to improve operating efficiency, the welding method and the device thereof of various bipolar electrode arcing gas protections proposed.
The spy open disclose in the flat 8-187598 communique a kind of can high-quality and the welding method and the device of the gas shielded arc welding that welds of high efficiency; for heavy wall butt joint vertical position welding joint; in the groove of the front of the welded plate of the heavy wall butt joint vertical position welding joint wideer than the back side; give two root bead silks side by side along the thickness of slab direction; about produce the scope of the thermal source of electric arc by two welding wires; positive plane heat source scope increases than back side thermal source scope; and make two welding wires along the direction of thickness of slab vibration (oscillate) and weld, can not worsen the material of soldered plate like this.
Open in the flat 10-118771 communique the spy and to disclose following technology; in the groove that extends along vertical steel plate above-below direction; the limit is supplied with in the vertical position welding gas-shielded welding device that welds up on the flux cored wire limit; dispose along the depth direction of groove groove depths and the opening part single electrode and second electrode that weld side by side; chassis; drive the vibrating device that the single electrode and second electrode shake in groove depth direction and on single electrode, produce positive polarity electric arc; produce the source of welding current of reversed polarity electric arc on second electrode; thereby realized carrying out fast and slab vertical position welding gas shield welding that each position welding is good, and suppressed splashing of fusion welding slag.
Following welding method is disclosed in the Te Kaiping 11-285826 communique; when utilizing bipolar electrode vertical position welding gas shielded arc welding welding steel plate groove; two welding electrodes of configuration on the thickness of slab direction; on slip copper coin one lateral electrode, use flux cored wire; on pad material one lateral electrode, use solid core welding wire or flux cored wire; shaking two electrodes welds; based on this; on slip copper coin one lateral electrode, use 2.7～5.5% the flux cored wire of welding slag production rate as welding wire fusion amount; on pad material one lateral electrode, use solid core welding wire 2.6% below or the flux cored wire of welding slag production rate as welding wire fusion amount; slip copper coin one lateral electrode is 10～38mm with the welding wire anode-cathode distance of pad material one lateral electrode; the welding wire that further the welding wire speed of giving of slip copper coin one lateral electrode is made as pad material one lateral electrode is given 1～1.5 times of speed; and the average welding wire speed of giving at the two poles of the earth is 14～20m/ branch, thereby can have the welding of good welds operability and good welds shape in the vertical position welding single pass welding of 35～90mm steel plate.
Open the spy that disclosed double-electrode gas protective welding connects method in the flat 11-197884 communique; as pad material one lateral electrode; use 0.5～2.6% steel welding wire or the flux cored wire of welding slag production rate as the deposited metal quality; in slip copper coin one lateral electrode; use 2.7～5.5% the flux cored wire of welding slag production rate as the deposited metal quality; further be defined in the C in the electrode wire of filling up material one lateral electrode and slip copper coin one side; Si; Mn; Ti; the composition of B; connect method by this double-electrode gas protective welding, can obtain good welding operation and good weld metal performance.
The spy opens the bipolar electrode vertical position welding gas-shield welding method that discloses a kind of utmost point thick steel products in the 2002-103041 communique; the slip copper pad is set on the one side of extremely thick soldered plate; at another side fixed backing plate is set; in its groove, insert two root bead receiving electrodes side by side along the thickness of slab direction; then soldered plate is welded; in this method; welding electrode as slip copper pad one side; use has been stipulated the flux cored wire that metal fluoride and other one-tenth are grouped into respect to the welding wire gross weight; and use solid core welding wire, thereby obtain in the welding steel plate, having good low-temperature flexibility and good welds operability as the welding electrode of fixed backing plate one side.
But, open flat 8-187579 communique the spy, the spy opens flat 10-118771 communique and the spy opens in the disclosed welding method of flat 11-285826 communique, though two electrodes are vibrated simultaneously, can use in the short situation of weld length, but for the long situation of weld length, owing to fill up the electric arc instability of the feasible pad of the influence material one face down bonding silk of material one side vibration, be easier to take place back bead bad (heap height, weld width), produce the phenomenon of too much splashing.Owing to the welding slag that adheres to causes the hot sticky sand of protecting bad and tip, have no alternative but to interrupt weld and restart in addition, thereby reduced the efficient of welding.
Open disclosed welding method in the flat 11-197884 communique for the spy in addition, though regulation is splashed production rate and composition and obtained excellent operability, it is to be that prerequisite is carried out to keep shaking along the certain welding wire anode-cathode distance of thickness of slab direction.
And then, open in the 2002-103041 communique in the disclosed welding method the spy, be in two root bead silks, use welding wire to form in groove opening one side and limit thinner flux cored wire, and the method for using the combination of solid core welding wire in pad material one side, obtain good operability and low-temperature flexibility, but do not mentioned shaking of welding wire.
Further opening in the flat 10-118771 communique tipping of disclosed double-electrode gas protective welding for above-mentioned spy puts; because two electrodes in a positive side and the back side one side setting vibrate simultaneously; so must on two electrodes, vibrating device be installed, perhaps utilize a device to carry out synchronous vibration after integrated at two electrodes.Like this put, will have large-scale, complicated problems for this double-electrode gas protective welding tipping.In addition incorporate the time, also there is the problem that can not only use an electrode in two electrodes.
Summary of the invention
The present invention produces on the above-mentioned in-problem basis of reference; it is a kind of in the vertical position welding single pass welding welding of steel plate that its purpose is to provide, and tubular wire rod for double-electrode gas protective welding, the double-electrode gas protective welding with good welds operability and good low-temperature toughness connects method and the double-electrode gas protective welding tipping is put.
The double-electrode gas protective welding that relates in the application's first invention connects method; be for the face side of the soldered plate groove that up and down extend wideer than rear side; face side contacts with the slip copper coin that slides up; rear side contacts with the fixed bolster material; and in above-mentioned groove, two root bead silks are separately configured in above-mentioned face side and rear side; the double-electrode gas protective welding that above-mentioned groove is docked vertical position welding connects method; it is characterized in that: above-mentioned welding wire is a flux cored wire; have only of the direction vibration of face side welding wire, and two welding wire polarity are welded on the contrary along thickness of slab.
In invention,, do not vibrate the welding wire of the back side one side, but fix its position in the thickness of slab direction in order to ensure the arc stability of face down bonding silk overleaf.In order to reduce the generating capacity that splashes, face side welding wire and rear side welding wire all use flux cored wire in addition, further make the polarity of both sides' welding wire opposite, can prevent electric arc like this and interfere, and then guarantee good arc stability.
Connect in the method at this double-electrode gas protective welding, preferably the polarity with above-mentioned face side welding wire is made as reversed polarity, and the polarity of above-mentioned rear side welding wire is made as positive polarity.The interference of two interpolar generation electric arcs can be prevented like this, thereby good welding operation can be guaranteed.In addition, the 3～50mm preferably of the distance between above-mentioned rear side welding wire and the above-mentioned soldered backboard face.Can prevent high excessive, the bad order of fritted sand, heap like this and merge badly etc., thereby can obtain good sealing run outward appearance and shape.Further, above-mentioned flux cored wire for example with respect to the welding wire gross mass, wherein contains Mn:1.5～2.5 quality %, SiO
2: 0.10～1.00 quality %, Ni:0.5～3.0 quality %, Ti:0.10～0.50 quality %, B:0.004～0.020 quality %.By using this kind flux cored wire,, can obtain the weld metal of excellent toughness even how the input heat can not reduce impact property yet.
The double-electrode gas protective welding tipping that relates in the application's second invention is put, be for the face side of the soldered plate groove that up and down extend wideer than rear side, face side contacts with the slip copper coin that slides up, rear side contacts with the fixed bolster material, and in above-mentioned groove, first and second liang of root bead silk is separately configured in above-mentioned face side and rear side, the double-electrode gas protective welding tipping of above-mentioned groove being docked vertical position welding is put, it is characterized in that: include as lower member, above-mentioned first welding wire is delivered in the above-mentioned groove, the welding chassis that while moves along above-mentioned groove; Can freely load and unload above-mentioned second welding wire that is installed on the above-mentioned welding chassis to than above-mentioned first welding wire in the above-mentioned groove to the parts of giving by above-mentioned pad material one side position of giving; To be arranged on above-mentioned first welding wire on the above-mentioned welding chassis along the vibrating device of the thickness of slab direction of above-mentioned soldered plate vibration; Can on above-mentioned first and second welding wire, apply the power supply of polarity opposite voltage.
In the present invention,, have only the face side electrode vibration, therefore do not need vibrating device for the rear side welding wire because the rear side welding wire does not vibrate.In addition, when only utilizing the face side welding wire to weld, the rear side welding wire can be unloaded.Thereby can simplification device and weight reduction.
In this double-electrode gas protective welding tipping is put; on above-mentioned welding chassis, the insertion section is set; above-mentioned giving the installation portion that can embed above-mentioned insertion section is set on the parts; above-mentioned installation portion is embedded into the state in the above-mentioned insertion section; by screw above-mentioned installation portion is fixed on the above-mentioned insertion section, thereby the above-mentioned parts of giving are fixed on the above-mentioned welding chassis.In addition, above-mentioned welding chassis is provided with the installation portion of U font, above-mentioned giving the insertion section that can insert in the above-mentioned installation portion is set on the parts, and this insertion section is embedded into the state in the above-mentioned installation portion, by screw above-mentioned insertion section is fixed on the above-mentioned installation portion, thereby the above-mentioned parts of giving are fixed on the above-mentioned welding chassis.
The double-electrode gas protective welding that relates in the application's the 3rd invention connects uses flux cored wire; be to use double-electrode gas protective welding in double-electrode gas protective welding connects to connect and use flux cored wire; described double-electrode gas protective welding connects; be for the face side of the soldered plate groove that up and down extend wideer than rear side; face side contacts with the slip copper coin that slides up with respect to above-mentioned soldered plate; rear side contacts with pad material on being fixed on above-mentioned soldered plate; and in above-mentioned groove, two root bead silks are separately configured in above-mentioned face side and rear side; above-mentioned groove is docked vertical position welding; it is characterized in that: with the welding wire gross mass is benchmark; wherein contain Mn:1.5～2.5 quality %, SiO
2: 0.10～1.00 quality %, Ni:0.5～3.0 quality %, Ti:0.10～0.50 quality %, B:0.004～0.020 quality %.
In the present invention, be set within the above-mentioned scope,, also can prevent the decline of weld metal impact property even cause in increase under the situation of input heat increase owing to thickness of slab and gap by content with Mn, Ni, Ti and B.Thus, in the hot imported welding that connects as double-electrode gas protective welding, can obtain having the weld metal of excellent toughness.In addition, by with SiO
2Content be set in 0.10～1.00 quality % can stable arc, can guarantee good welding operation.
According to the present invention, face side welding wire and rear side welding wire all use flux cored wire, and the welding wire of rear side does not vibrate, the welding wire that has only face side is along vibrating on the direction of thickness of slab, and utilize the polarity of two welding wires to weld on the contrary, with this, can in the welding of the vertical position welding single pass welding of steel plate, obtain good welding operation and good low-temperature toughness.
Description of drawings
Fig. 1 is the side view that the double-electrode gas protective welding tipping of embodiment of the present invention is put.
Fig. 2 (a) is a vertical view of giving the welding chassis of face side welding wire, (b) is the vertical view of giving the portion that gives of rear side welding wire.
Fig. 3 is the side view of welding wire supply unit.
Fig. 4 (a) is illustrated in to install on the welding chassis to give the decomposition side view of parts method, (b) is along the decomposition section of A-A line in (a).
Fig. 5 is the vertical view that the double-electrode gas protective welding of embodiment of the present invention connects method.
Fig. 6 is the side cross-sectional view that the double-electrode gas protective welding of embodiment of the present invention connects method.
Fig. 7 (a) is the vertical view of the welding method of the thickness of slab of soldered plate when being 80mm, (b) is the vertical view of the thickness of slab of the soldered plate welding method when being 35mm.
Fig. 8 is the side cross-sectional view of the welding method of the thickness of slab of soldered plate when being 80mm.
The specific embodiment
Related double-electrode gas protective welding tipping is put to embodiment of the present invention below, carries out specific description with reference to accompanying drawing.The side view that the double-electrode gas protective welding tipping of shown in Figure 1 is embodiment is put, shown in Fig. 2 (a) is vertical view from the welding chassis of welding wire to a positive side that give, shown in Fig. 2 (b) is the vertical view of giving parts from welding wire to the back side one side that give.In addition, shown in Figure 3 is the side view of the supply unit of welding wire.As shown in fig. 1; in the tipping of present embodiment double-electrode gas protective welding is put; be provided with: in groove, give face side welding wire 4, the welding chassis 26 that moves along groove simultaneously and in than groove face side welding wire 4 give parts 29 by what rear side welding wire 5 was given in the position of the pad material side of lining.This gives parts 29, can be installed on the welding chassis 26 with freely loading and unloading.In addition, in the double-electrode gas protective welding tipping of present embodiment was put, face side welding wire 4 and rear side welding wire 5 were provided with the power supply that can apply opposite polarity voltage.Further, as shown in Figure 3, face side welding wire 4 and rear side welding wire 5 are inserted in tubulose welding torch 16 and the welding torch 17 separately, and supply with in groove from front end by its inside.
Shown in Fig. 2 (a), be provided with support arm 21 in welding on the chassis 26, support that face side welding wire 4 is imported to welding torch 16 in the groove.On this support arm 21, clamp 23 is installed, utilizes clamp 23 clamping welding torches 16, thus the position that can keep welding torch 16.In addition, support arm 21 can be in its position all around moves, like this can be to the position of welding torch 16, be that the supply position of face side welding wire 4 is adjusted.Further, welding is equipped with vibrating device 25 on the chassis 26, utilizes this vibrating device 25 can be so that face side welding wire 4 vibrates on the thickness of slab direction of soldered plate.Further, about welding chassis 26, respectively establish two two sections and amount to 8 wheels 27.And this wheel 27 is rotationally connected with the guide rail 28 of groove setting on soldered plate, utilizes motor etc. to make wheel 27 revolutions, welds chassis 26 like this and just can move along groove.
Shown in Fig. 2 (b), give parts 29 and be provided with support arm 22 in addition, support can import to rear side welding wire 5 welding torch 17 in the groove.On this support arm 22, also be provided with clamp 24, utilize this clamp 24 clamping welding torches 17, thus the position that can keep welding torch 17.In addition, support arm 22, as above-mentioned support arm 21, can be on its position before and after move left and right, like this can be, be that the supply position of face side welding wire 5 is adjusted to the position of welding torch 17.
Further, giving parts 29 can be installed on the welding chassis 26 with freely loading and unloading.Shown in Fig. 4 (a) is the decomposition side view that the method give parts is installed on the welding chassis, and shown in Fig. 4 (b) is exploded view along A-A line cross section among Fig. 4 (a).This installation method, as Fig. 4 (a) and (b) like that, give the installation portion 30 that parts 29 are provided with the U font, welding chassis 26 is provided with the insertion section 31 that can be entrenched on the installation portion 30.And, in installation portion 30 and insertion section 31 chimeric states, promptly in installation portion 30, under the state of clamping insertion section 31, utilize screw that installation portion 30 is fixed on the insertion section 31.Like this by installation portion 30 being set giving on the parts 29, the welding chassis welding chassis 30 that tipping is put as double-electrode gas protective welding that can use former single electrode to use.In the tipping of the double-electrode gas protective welding of present embodiment is put, vibrating device is not installed giving on the parts 29.
As mentioned above, the tipping of the double-electrode gas protective welding of present embodiment is put, and is a kind of and is assembled with vibrating device 25 and 5 simple mechanisms that vibrating device is not installed by clamp 24 maintenances of rear side welding wire on face side welding wire 4.Therefore, can make device overall simplification and lightweight.In addition, the tipping of the double-electrode gas protective welding of present embodiment is put, because therefore rear side welding wire 5 when must using the welding of two electrodes, can append rear side welding wire 5 than being easier to loading and unloading.Like this in the double-electrode gas protective welding tipping of present embodiment is put; in the time of below welding; can only use the single electrode welding of face side welding wire 4; and when must use the welding of two electrodes; can append rear side welding wire 5; therefore, for example also relatively be applicable to as maximize recently, thickness of slab reach 80～100mm all-container ship positions such as outwale, in the situation of above thickness of slab, welding the formation slab.
Below, the operation that present embodiment double-electrode gas protective welding tipping is put, be that the welding method that double-electrode gas protective welding connects describes.The double-electrode gas protective welding of present embodiment that shown in Figure 5 is connects the vertical view of method, and shown in Figure 6 is its side cross-sectional view.As Fig. 5 and shown in Figure 6, at first, on the soldered plate of forming by a pair of steel plate 1, have the groove 11 that vertically extends, itself and horizontal direction subtend are provided with, with this groove 11 of weld metal 10 landfills, form butt joint vertical position welding joint.This groove 11 for example is in the shape of the letter V, and the A/F of face side is wideer than the A/F of rear side.
Then, on the rear side (rear side of soldered plate) of groove 11, fixedly install pad material 3.In the welding method that the double-electrode gas protective welding of present embodiment connects, in welding operation, this pad material 3 does not move.On the other hand, front one side (face side of soldered plate) of groove 11 is provided with the slip copper coin 2 that can be moved upward.Be provided with on the top of slip copper coin 2 in order to prevent that atmosphere from invading in the welding portion on this slip copper coin 2 and the gas vent 8 that ejection protective gas (for example carbon dioxide) is protected.In addition, on slip copper coin 2, in be provided with the cooling water path 6 of cooling slip copper coin 2.Be provided with the supply port 7 of in this cooling water path 6, supplying with cooling water in the bottom of slip copper coin 2.
Then, rear side welding wire 5 is arranged on the position of the 3～50mm that leaves soldered backboard face.In addition, connect in the method at the double-electrode gas protective welding of present embodiment, rear side welding wire 5 does not vibrate.That is, do not move along the direction of thickness of slab.On the other hand, face side welding wire 4 is along the suitable amplitude internal vibration on the thickness of slab direction of soldered plate.
And, these face side welding wires 4 and rear side welding wire 5 are arranged on the suitable welding bench with slip copper coin 2, by this welding bench is moved above parallel plane with soldered plate 1, face side welding wire 4 and rear side welding wire 5 are moved with identical speed together up with slip copper coin 2, implement the butt joint vertical position welding.
In addition; double-electrode gas protective welding in present embodiment connects in the method; face side welding wire 4 and rear side welding wire 5 all use flux cored wire, and the polarity between face side welding wire 4 and the rear side welding wire 5 is welded on the contrary, can obtain good welding operation thus.
The result of study of people's test of the present invention shows; former double-electrode gas protective welding connects in the method; two electrodes vibrate simultaneously; can use in the long short occasion of welding; but long long and because in the big welding procedure of groove deviations such as gap variation in welding, because the influence of the vibration of rear side welding wire, make the electric arc instability of rear side welding wire; be easier to take place sealing run bad (heap is high, weld width), the too much phenomenon of the growing amount that splashes.Because the protection that the welding slag of paying causes is bad and the hot sticky sand of nozzle, haves no alternative but to interrupt weld and restart, thereby reduced the efficient of welding.
Therefore, in the present embodiment, do not vibrate rear side welding wire 5,, can improve the stability of electric arc, reduce the growing amount that splashes by only vibrating face side welding wire 4.Therefore, even be the welding method that also can guarantee the good welds operability in the bigger welding procedure of a kind of deviation on groove length.As shown in table 1 in the recommendation welding condition that the double-electrode gas protective welding of present embodiment connects in the method, the recommendation condition example of corresponding every kind of thickness of slab is as shown in table 2.In addition, the vibration condition example of corresponding every kind of thickness of slab is as shown in table 3.Further, be the vertical view of the welding method of soldered thickness of slab when being 80mm shown in Fig. 7 (a).Shown in Fig. 7 (b) is the vertical view of the welding method of soldered thickness of slab when being 35mm.In addition, shown in Figure 8 is the side cross-sectional view of soldered thickness of slab welding method when being 80mm.As Fig. 7 (a) and shown in Figure 8, when soldered thickness of slab is 80mm, can weld under the condition below, for example bevel angle embodiment of the present invention α is 20 °, the rear side groove width is 10mm, amplitude A is 15mm, and the anode-cathode distance L between face side welding wire 4 and the rear side welding wire 5 is 25mm, and the target location m of rear side welding wire is 35mm.In addition, when the thickness of slab of soldered plate 1 was 80mm, shown in Fig. 7 (b), for example, except anode-cathode distance L is set at the 10mm, method identical when being 80mm with above-mentioned soldered thickness of slab was welded.In addition, for vibration velocity 1.5～7.5cm/ second preferably.
[table 1]
[table 2]
[table 3]
In addition,,, can prevent that the electric arc of two interpolars from interfering, guarantee good welding operation by making one side for anodal, the opposing party are the method for antipole for the combination of face side welding wire and rear side welding wire polarity.In addition, preferably the face side welding wire is made as antipole, the rear side welding wire is made as positive pole, the electric arc scope of rear side welding wire is increased, make electric arc can arrive the back side fully, thereby the back side can form good weld seam with this.
Further, according to the inventor's result of study, the rear side welding wire is the outward appearance for sealing run in the position of thickness of slab direction (leaving the distance at the back side), and shape has bigger influence.When the rear side welding wire in thickness of slab direction position for leaving the above 50mm of the back side 3mm when following, can obtain having the sealing run of good appearance, shape, and when it leaves back side deficiency 3mm, can produce more slag and bigger heap height, when it leaves the back side and surpasses 50mm, can produce bad outward appearance such as the high deficiency of heap and bad fusion etc.Therefore, in order to obtain good sealing run outward appearance, shape,, must leave between the 3mm～50mm of the back side for the position of rear side welding wire in the thickness of slab direction.The thickness of slab of supposing welding object in addition is 80mm.
Further, former double-electrode gas protective welding connects method, and the welding wire of use is the combination of solid core welding wire and flux cored wire, but when using solid core welding wire, the electric arc instability, and can increase the growing amount that splashes.Therefore around welding torch or slip copper coin, can pay welding slag, cause the hot sticky sand of nozzle and protect badly etc., cause the interruption of welding.Face side and rear side welding wire all use the good flux cored wire of arc stability in the present invention, can reduce the generating capacity that splashes like this, thereby obtain good welding operation and complete weldquality.
Then, the double-electrode gas protective welding of present embodiment being connect the flux cored wire that uses in the method is described in detail.The double-electrode gas protective welding of present embodiment connects uses flux cored wire, is benchmark with the welding wire gross mass, wherein contains Mn:1.5～2.5 quality %, SiO
2: 0.10～1.00 quality %, Ni:0.5～3.0 quality %, Ti:0.10～0.50 quality %, and B:0.004～0.020 quality %.
Below, double-electrode gas protective welding used in the present embodiment connect with the numerical definiteness reason to each composition in the flux cored wire describe.
Mn:1.5～2.5 quality %
Mn uses as deoxidier, and the toughness of weld metal is had very big influence.When Mn content is less than 1.5 quality %, the toughness deficiency of weld metal.On the other hand, when Mn content surpassed 2.5 quality %, the too high meeting of the intensity of weld metal worsened toughness.Thereby the content of Mn is set in 1.5～2.5 quality %, further preferably, can improve toughness like this at 1.6～2.3 quality %.
SiO
2: 0.01～1.00 quality %
Generally for the generation composition of gas shield welding with welding slag in the flux cored wire, use be CaF
2, in flux cored wire of the present invention, also use CaF
2This moment SiO
2Be necessary composition, play the effect of welding slag slag former.But, work as SiO
2Content the time less than 0.10 quality %, the welding slag amount is too small, the fillet in normal shear outward appearance is bad.On the other hand, SiO
2Content when surpassing 1.00 quality %, the welding slag surplus can cause the state that electric arc is buried on the molten bath.Its result causes the electric arc instability, and increase is splashed.Thereby, SiO
2Content preferably within 0.10～1.00 quality % scope.
Open in the flat 11-197884 communique in the disclosed flux cored wire above-mentioned spy, the content of welding slag is recommended in more than the 2.7 quality % in the motlten metal, but when the content of welding slag in the motlten metal when 2.7 quality % are above, welding slag amount surplus in the molten bath, can cause electric arc to be buried, have the electric arc problem of unstable.Therefore, with respect to the content of motlten metal welding slag, less than 2.7 quality % preferably.Like this, electric arc has good stable.In addition, more preferably with respect to the motlten metal amount, the ratio of welding slag is between 0.5～2.5 quality %.Can obtain better arc stability and weld appearance like this.
Ni:0.5～3.0 quality %
Ni is effective to the toughness that improves weld metal.But when Ni contain quantity not sufficient 0.5 quality % the time its effect very little, when the content of Ni surpassed 3.0 quality %, the intensity of weld metal was too high, and its toughness is worsened.Further Ni content is 0.9～2.7 quality % preferably.Can improve its toughness like this.
Ti:0.10～0.50 quality %
Ti is the same with above-mentioned Ni, can improve the toughness of weld metal.But, when Ti contain quantity not sufficient 0.10 quality % the time effect very little, the fissility of welding slag is also very poor in addition.On the other hand, when the content of Ti surpassed 0.50 quality %, the intensity of weld metal was too high, and its toughness is worsened.Further preferably the content of Ti is at 0.15～0.30 quality %.Can improve its toughness like this.
B:0.004～0.020 quality %
B is the same with above-mentioned Ni and Ti, has the effect of improving weld metal toughness.But the content of B its effect in less than 0.004 quality % is very little.On the other hand, when the content of B surpassed 0.020 quality %, the intensity of weld metal was too high, not only can worsen toughness, and the following fracture of high temperature is dangerous higher.Further for the content of B 0.004～0.020 quality % preferably.Can improve its toughness like this.
In addition, connect with in the flux cored wire at the double-electrode gas protective welding of present embodiment, very important to the content of balance Mn, Ni, Ti and B.By these compositions are limited within the above-mentioned scope, can when utilizing double-electrode gas protective welding to connect method steel plate vertical position welding single pass welding is welded, obtain good welding operation and good low-temperature flexibility.
Further, connect in the method at the double-electrode gas protective welding of present embodiment, rear side welding wire and face side welding wire can use the welding wire with a kind of composition, but also can change the composition of the welding wire of rear side welding wire and face side.In addition; in the method that the double-electrode gas protective welding of present embodiment connects; weld under face down bonding silk and the non-vibrating condition overleaf; can prevent from more no longer to become the instability of rear side welding wire electric arc of problem and the pilosity that causes splashes with this at weld length; but, can further improve this effect by suitably setting the composition of rear side welding wire.In the composition of welding wire, SiO especially
2Bigger with the connection of the generation that splashes, overleaf in the face down bonding silk, SiO
2Content better when high.Concrete, for SiO in the rear side welding wire
2Content preferably at 0.3～1.0 quality %.In addition, SiO in face side welding wire this moment
2Content preferably at 0.1～0.5 quality %.SiO in welding wire
2Content when surpassing above-mentioned scope, the welding slag surplus on the molten bath causes electric arc to be buried, and can make that electric arc is unstable and increase to splash.In addition because the rear side welding wire is in the depths of groove, removal paying splash the time than face side difficulty, therefore wish to suppress especially the rear side welding wire and produce and splash.
(embodiment 1)
Below, the comparative example outside the embodiments of the invention and the scope of the invention is compared and illustrates.Shown in the following note table 4 is kind, polarity and the vibration condition of used welding wire in embodiment and the comparative example.In addition, be the welding operation of each embodiment and comparative example shown in the following note table 5.Wherein FCW is flux cored wire (Flux Cored Wire) in the table 4, and the expression of zero in the table 5 has same performance with embodiment 1～8, and ◎ represents better than embodiment 1～8, and △ represents poorer slightly than embodiment 1～8, and * expression is poor.In addition, for experimental condition, soldered plate 1 be shaped as thick 80mm, wide 500mm, long 3000mm, bevel angle is 20 °, groove is shaped as the V font, is 4mm in welding beginning one side slope mouth gap, it is 8mm that welding finishes a side.That is, consider the change in actual welding part gap, it is 4mm that welding beginning side lower end groove gap is set, and the upper end groove gap that welding finishes side is the taper weld seam of 8mm.
[table 4]
[table 5]
Comparative example 1-1 is to shown in the 1-4 being along with the influence to the welding operability of the difference of face side welding wire, rear side welding wire kind.When being used in combination (comparative example 1-1),, thereby can cause that the bad and nozzle of protection paying hot sticky sand, can not continue welding because the electric arc instability can produce a large amount of splashing for solid core welding wire and solid core welding wire.In addition, and when being used in combination for solid core welding wire and flux cored wire (comparative example 1-2,1-3), the arc stability of solid core welding wire descends, and the generation that splashes increases.Especially,, when the rear side welding wire uses solid core welding wire (comparative example 1-2),, remove splashing of paying on the rear side welding torch and obviously be difficult to, cause the sticking pair hot sticky sand of nozzle easily along with the increase of thickness of slab at face side welding wire use flux cored wire.
Relative with it, when using flux cored wire and flux cored wire to be used in combination (comparative example 1-4), arc stability is fine, can guarantee good weld appearance and weld shape.In addition, because the generating capacity that splashes is less,, can stably weld so the sticking splashing amount of paying on the gas vent of welding torch and slip copper coin is less.
Then, in 1-7, show the face side welding wire, the influence of rear side welding wire polarity at comparative example 1-4.Identical the time (comparative example 1-4,1-7), electric arc can take place two interpolars interferes for the two poles of the earth polarity, and the result can destroy arc stability.On the other hand, for the opposite polarity situation in the two poles of the earth (comparative example 1-5,1-6), electric arc can not take place two interpolars interferes, and can guarantee good arc stability.Especially, be antipole at the face side welding wire, when the rear side welding wire is anodal (comparative example 1-6), electric arc wider range of rear side welding wire, its penetration degree is wider, therefore can well reach the back side, to form good sealing run.
Then comparative example 1-6 is to shown in the 1-13 being by the vibration of face side welding wire and the rear side welding wire influence to the welding operability.When face side welding wire and rear side welding wire all vibrate (comparative example 1-6, comparative example 1-7, comparative example 1-14, comparative example 1-15), because vibration makes arc stability descend, the growing amount that splashes increases.The method can be used in the short occasion of weld length, but it is long at weld length, when the bigger welding procedure of groove deviation such as gap variation occurring, because the influence of rear side electrode vibration, make the electric arc instability of rear side welding wire, phenomenon such as cause sealing run bad (heap high, weld seam is wide) easily, splash too much.Owing to sticking splashing of paying caused the hot sticky sand of protecting bad and nozzle, thus have no alternative but to interrupt weld and restart, thus reduced the efficient of welding.
Relatively in embodiments of the invention 1-8 and embodiment 1-9, only vibrate the face side welding wire, fixing rear side welding wire is even to the bigger welding procedure of deviation of groove shapes such as gap variation, also can guarantee good arc stability.
In addition, for fixing face side welding wire, vibration or the fixing situation of rear side welding wire (comparative example 1-10 is to 1-13), face side can not get good penetration, can produce to merge bad weld defect such as grade.Therefore for vibration, take only to vibrate face side welding wire, the fixing method of rear side welding wire, in construction, can obtain good welding operation.
Be the influence that the fixed position of face side welding wire is produced sealing run outward appearance, shape shown in the note table 6 down.At embodiment 2-3 in 2-10, because the fixed position of rear side welding wire is within the scope of leaving below the above 50mm of back side 3mm, can obtain good sealing run outward appearance and sealing run shape, for the situation (comparative example 2-1 and 2-2) of leaving the not enough 3mm in the back side, slag and heap are high excessive, when leaving the back side to surpass 50mm (comparative example 2-11 and 2-12), there is the fusion of groove rear side bad as can be seen, bad outward appearance such as the high deficiency of heap and merge phenomenons such as bad.Therefore, in order to obtain good sealing run outward appearance, shape, must be within the scope of leaving the back side 3～50mm for the fixed position of rear side welding wire.
[table 6]
(embodiment 2)
Then, embodiments of the invention 2 are described.In embodiment 2, at first be produced as follows the flux cored wire of forming shown in the note table 7.Further, in component of weld wire as shown in table 4, the remnants of defeated troops are Fe, Si and C etc.Comparative example No.3-21 in addition, used is former flux cored wire.
[table 7]
Then, use the various welding wires of embodiment and comparative example, utilize double-electrode gas protective welding to connect method thick 80mm, wide 500mm, the soldered plate of long 1500mm carries out the welding of vertical position welding single pass welding, and estimates the impact property of welding operation and weld metal.This moment welding condition be, groove is shaped as the V font, groove weld is 8mm, the input heat all be about 600KJ/cm.In addition, impact test is carried out according to the impact test method of the welding point of JISZ3128 regulation, measures its impact value vE under-20 ℃, and its value is zero during for 41J, during not enough 41J be *.Further, for the evaluation of welding operation, be benchmark with the flux cored wire of embodiment No.3-11, than No.3-11 good be expressed as ◎, identical is expressed as zero, a bit weaker △ that is expressed as, being expressed as of difference *.Shown in the following note of the above result table 8.
[table 8]
As above remember shown in the table 8, welding wire for the comparative example 3-2 that contains quantity not sufficient 1.5 quality % of Mn, Ni contains the welding wire of the comparative example 3-3 of quantity not sufficient 0.5 quality %, the welding wire of the welding wire of the comparative example 3-5 that contains quantity not sufficient 0.1 quality % of Ti and the comparative example 3-7 that contains quantity not sufficient 0.004 weight % of B, owing to its quenching degree is not enough its impact value is descended, special welding wire for comparative example 3-3, its fillet in normal shear bad order.In addition, the welding wire that surpasses the comparative example 3-1 of 2.5 quality % for the content of Mn, the content that the content of Ni surpasses the welding wire of comparative example 3-4 of 3.0 quality % and Ti surpasses the welding wire of the comparative example 3-6 of 0.50 quality %, because the intensity of weld metal is too high, its impact property is descended.Further, for the welding wire of B content above the comparative example 3-8 of 0.020 quality %, because the too high levels of B, its high temperature resistant disruptiveness is relatively poor, at high temperature can break.Further has the SiO of containing
2The welding wire of the comparative example 3-9 of less than 0.10 quality % makes its fillet in normal shear bad order owing to the welding slag amount is very few.In addition for SiO
2Content surpass the welding wire of the comparative example 3-10 of 0.25 quality %, the welding slag on the molten bath is too much, the state that causes electric arc to be buried.Consequently the electric arc instability increases the growing amount that splashes.Further for the comparative example 3-21 of existing procucts, the content of Mn, Ni content, the content of Ti content and B is all outside scope of the present invention, so its impact value is lower, and for welding operation, because Ti less than 0.10 quality %, thereby the fissility of welding slag is relatively poor.
On the other hand, within the scope of the present invention embodiment 3-11 to 3-20 and embodiment 3-22 to the welding wire of 3-24, have good impact property and welding operation.
[table 1]
| Welding method | The automatic bipolar electrode single pass welding welding of vertical position welding |
| Welder | Bipolar electrode SEGARC |
| The source of welding current and electric power polarity | Rear side: silicon controlled rectifier (SCR) 600A power supply, DC-EN face side: silicon controlled rectifier (SCR) 500A power supply, DC-EP |
| Vibrating device | Peak swing 30mm |
| Bevel angle α | 20° |
| The gap | 8～10mm |
| The welding wire extension | 35mm |
| Protective gas | 100％CO 2, flow: 40 liters/minute |
| Give the roller rotating speed | 140 rev/mins |
[table 2]
| Thickness of slab (mm) | Welding wire | Welding current (A) | Arc voltage (V) | Speed of welding (cm/ branch) | Input heat (kJ/cm) |
| 80 | Rear side | 400 | 41 | 3.2 | 622 |
| Face side | 390 | 43 | |||
| 65 | Rear side | 430 | 43 | 4.0 | 529 |
| Face side | 390 | 43 | |||
| 50 | Rear side | 430 | 43 | 6.5 | 325 |
| Face side | 390 | 43 | |||
| 35 | Rear side | 380 | 36 | 8.3 | 197 |
| Face side | 360 | 38 |
[table 3]
| Mode of vibration | Thickness of slab t (mm) | Anode-cathode distance L (mm) | Amplitude A (mm) | The depths stops (second) | The front stops (second) | The target location of rear side welding wire |
| Face side: slip rear side: fixing | 80 | 20～30 | 10～20 | 1.0～5.0 | 1.0～5.0 | 25～40 |
| 65 | 15～25 | 5～15 | 20～35 | |||
| 50 | 10～20 | 2～10 | 15～30 | |||
| 35 | 5～15 | 2～10 | 10～20 |
[table 4]
| Distinguish | No. | Welding wire | Polarity | Vibration | |||
| Face side | Rear side | Face side | Rear side | Face side | Rear side | ||
| Comparative example | 1-1 | Solid core welding wire | Solid core welding wire | Antipole | Antipole | Have | Have |
| Comparative example | 1-2 | FCW | Solid core welding wire | Antipole | Antipole | Have | Have |
| Comparative example | 1-3 | Solid core welding wire | FCW | Antipole | Antipole | Have | Have |
| Comparative example | 1-4 | FCW | FCW | Antipole | Antipole | Have | Have |
| Comparative example | 1-5 | FCW | FCW | Anodal | Antipole | Have | Have |
| Comparative example | 1-6 | FCW | FCW | Antipole | Anodal | Have | Have |
| Comparative example | 1-7 | FCW | FCW | Anodal | Anodal | Have | Have |
| Embodiment | 1-8 | FCW | FCW | Anodal | Antipole | Have | Do not have |
| Embodiment | 1-9 | FCW | FCW | Antipole | Anodal | Have | Do not have |
| Comparative example | 1-10 | FCW | FCW | Anodal | Antipole | Do not have | Have |
| Comparative example | 1-11 | FCW | FCW | Antipole | Anodal | Do not have | Have |
| Comparative example | 1-12 | FCW | FCW | Anodal | Antipole | Do not have | Do not have |
| Comparative example | 1-13 | FCW | FCW | Antipole | Anodal | Do not have | Do not have |
| Comparative example | 1-14 | FCW | FCW | Antipole | Anodal | Have | Have |
| Comparative example | 1-15 | FCW | Solid core welding wire | Antipole | Anodal | Have | Have |
[table 5]
| Distinguish | No. | Welding operation | |||||
| Arc stability | Growing amount splashes | The welding slag fissility | The fillet in normal shear outward appearance | The sealing run outward appearance | Evaluation | ||
| Comparative example | 1-1 | × | × | × | × | × | × |
| Comparative example | 1-2 | △ | △ | △ | ○～△ | △～× | △ |
| Comparative example | 1-3 | △ | △ | △ | ○～△ | △ | △ |
| Comparative example | 1-4 | ○～△ | ○～△ | ○ | ○ | △ | ○～△ |
| Comparative example | 1-5 | ○ | ○ | ○ | ○ | △ | ○～△ |
| Comparative example | 1-6 | ○ | ○ | ○ | ○ | △ | ○～△ |
| Comparative example | 1-7 | ○～△ | ○～△ | ○ | ○ | △ | ○～△ |
| Embodiment | 1-8 | ○ | ○ | ○ | ○ | ○ | ○ |
| Embodiment | 1-9 | ◎ | ◎ | ○ | ○ | ○ | ◎ |
| Comparative example | 1-10 | ○ | ○ | ○ | △ | △ | ○～△ |
| Comparative example | 1-11 | ◎ | ◎ | ○ | △ | △ | ○～△ |
| Comparative example | 1-12 | ◎～○ | ◎～○ | ○ | × | × | × |
| Comparative example | 1-13 | ◎ | ◎ | ○ | × | × | × |
| Comparative example | 1-14 | ◎～△ | ◎～△ | ○ | ○～△ | ○～△ | ○～△ |
| Comparative example | 1-15 | △ | △ | ○～△ | ○～△ | △ | △ |
[table 6]
| Distinguish | No. | The fixed position of rear side welding wire (leaving the distance of rear side) | The outward appearance of sealing run | Evaluation |
| Comparative example | 2-1 | 0 | Slag | × |
| Comparative example | 2-2 | 1 | Heap is high excessive | ○～△ |
| Embodiment | 2-3 | 3 | Well | ○ |
| Embodiment | 2-4 | 5 | Well | ○ |
| Embodiment | 2-5 | 10 | Well | ○ |
| Embodiment | 2-6 | 20 | Well | ○ |
| Embodiment | 2-7 | 30 | Well | ○ |
| Embodiment | 2-8 | 40 | Well | ○ |
| Embodiment | 2-10 | 50 | Well | ○ |
| Comparative example | 2-11 | 55 | Merge bad | × |
| Comparative example | 2-12 | 60 | Merge bad | × |
[table 7]
| Distinguish | No. | Component of weld wire (quality %) | ||||
| Mn | Ni | Ti | B | SiO 2 | ||
| Comparative example | 3-1 | 2.9 | 0.8 | 0.21 | 0.008 | 0.12 |
| Comparative example | 3-2 | 1.1 | 1.1 | 0.21 | 0.009 | 0.11 |
| Comparative example | 3-3 | 1.8 | 0.1 | 0.44 | 0.010 | 0.09 |
| Comparative example | 3-4 | 2.1 | 3.5 | 0.41 | 0.010 | 0.15 |
| Comparative example | 3-5 | 1.9 | 1.4 | 0.05 | 0.015 | 0.15 |
| Comparative example | 3-6 | 2.0 | 1.9 | 0.61 | 0.015 | 0.17 |
| Comparative example | 3-7 | 1.5 | 0.9 | 0.09 | 0.002 | 0.19 |
| Comparative example | 3-8 | 2.1 | 1.5 | 0.10 | 0.025 | 0.11 |
| Comparative example | 3-9 | 2.0 | 1.5 | 0.15 | 0.015 | 0.04 |
| Comparative example | 3-10 | 1.6 | 1.5 | 0.15 | 0.011 | 1.35 |
| Embodiment | 3-11 | 1.5 | 1.9 | 0.19 | 0.010 | 0.21 |
| Embodiment | 3-12 | 2.5 | 1.8 | 0.21 | 0.010 | 0.20 |
| Embodiment | 3-13 | 1.8 | 0.5 | 0.40 | 0.011 | 0.18 |
| Embodiment | 3-14 | 1.8 | 3.0 | 0.41 | 0.018 | 0.15 |
| Embodiment | 3-15 | 1.8 | 2.4 | 0.10 | 0.019 | 0.51 |
| Embodiment | 3-16 | 1.9 | 2.6 | 0.50 | 0.011 | 0.12 |
| Embodiment | 3-17 | 2.0 | 2.0 | 0.19 | 0.004 | 0.11 |
| Embodiment | 3-18 | 1.6 | 1.2 | 0.30 | 0.020 | 0.15 |
| Embodiment | 3-19 | 2.2 | 1.9 | 0.33 | 0.009 | 0.10 |
| Embodiment | 3-20 | 2.3 | 1.5 | 0.18 | 0.010 | 0.85 |
| Comparative example | 3-21 | 2.6 | 0.2 | 0.09 | 0 | 0.49 |
| Embodiment | 3-22 (rear side) | 1.5 | 2.0 | 0.20 | 0.004 | 0.50 |
| 3-22 (rear side) | 2.0 | 2.0 | 0.19 | 0.004 | 0.11 | |
| Embodiment | 3-23 (rear side) | 1.7 | 2.0 | 0.30 | 0.015 | 0.70 |
| 3-23 (face side) | 1.6 | 1.2 | 0.30 | 0.015 | 0.15 | |
| Embodiment | 3-24 (rear side) | 2.2 | 2.1 | 0.30 | 0.009 | 0.60 |
| 3-24 (face side) | 2.2 | 1.9 | 0.25 | 0.009 | 0.10 |
[table 8]
| Distinguish | No. | Impact property | Welding operation | Overall merit | |
| Impact value vE (J) | Judge | ||||
| Comparative example | 3-1 | 27 | × | ○ | × |
| Comparative example | 3-2 | 15 | × | ○ | × |
| Comparative example | 3-3 | 28 | × | × | × |
| Comparative example | 3-4 | 19 | × | ○ | × |
| Comparative example | 3-5 | 21 | × | △ | × |
| Comparative example | 3-6 | 27 | × | ○ | × |
| Comparative example | 3-7 | 19 | × | ○ | × |
| Comparative example | 3-8 | 101 | ○ | × | × |
| Comparative example | 3-9 | 81 | ○ | × | × |
| Comparative example | 3-10 | 47 | ○ | × | × |
| Embodiment | 3-11 | 95 | ○ | ○ | ○ |
| Embodiment | 3-12 | 88 | ○ | ○ | ○ |
| Embodiment | 3-13 | 85 | ○ | ○ | ○ |
| Embodiment | 3-14 | 80 | ○ | ○ | ○ |
| Embodiment | 3-15 | 85 | ○ | ○ | ○ |
| Embodiment | 3-16 | 95 | ○ | ○ | ○ |
| Embodiment | 3-17 | 110 | ○ | ○ | ○ |
| Embodiment | 3-18 | 90 | ○ | ○ | ○ |
| Embodiment | 3-19 | 100 | ○ | ○ | ○ |
| Embodiment | 3-20 | 115 | ○ | ○ | ○ |
| Comparative example | 3-21 | 21 | × | △ | × |
| Embodiment | 3-22 | 110 | ○ | ◎ | ◎ |
| Embodiment | 3-23 | 115 | ○ | ◎ | ◎ |
| Embodiment | 3-24 | 100 | ○ | ◎ | ◎ |
Claims (5)
1. a double-electrode gas protective welding connects and uses flux cored wire, it is characterized in that: with the welding wire gross mass is benchmark, wherein contains Mn:1.5～2.5 quality %, SiO
2: 0.10～1.00 quality %, Ni:0.5～3.0 quality %, Ti:0.10～0.50 quality %, B:0.004～0.020 quality %.
2. double-electrode gas protective welding as claimed in claim 1 connects uses flux cored wire, it is characterized in that: with the welding wire gross mass is benchmark, wherein contains Mn:1.6～2.3 quality %.
3. double-electrode gas protective welding as claimed in claim 1 connects uses flux cored wire, it is characterized in that: with the welding wire gross mass is benchmark, wherein contains Ni:0.9～2.7 quality %.
4. double-electrode gas protective welding as claimed in claim 1 connects uses flux cored wire, it is characterized in that: with the welding wire gross mass is benchmark, wherein contains Ti:0.15～0.30 quality %.
5. double-electrode gas protective welding as claimed in claim 1 connects uses flux cored wire, it is characterized in that: with the welding wire gross mass is benchmark, wherein contains B:0.004～0.015 quality %.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002318929 | 2002-10-31 | ||
| JP2002318929 | 2002-10-31 | ||
| JP2002-318929 | 2002-10-31 | ||
| JP2003-303689 | 2003-08-27 | ||
| JP2003303689 | 2003-08-27 | ||
| JP2003303689A JP3993150B2 (en) | 2002-10-31 | 2003-08-27 | Flux-cored wire for two-electrode electrogas arc welding, two-electrode electrogas arc welding method, and two-electrode electrogas arc welding apparatus |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101029390A Division CN1251832C (en) | 2002-10-31 | 2003-10-31 | Tubular wire rod for double-electrode gas protective welding, its welding method and appts. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1817550A CN1817550A (en) | 2006-08-16 |
| CN1817550B true CN1817550B (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100597107A Expired - Lifetime CN1817550B (en) | 2002-10-31 | 2003-10-31 | Tubular wire rod for double-electrode gas protective welding |
| CNB2003101029390A Expired - Lifetime CN1251832C (en) | 2002-10-31 | 2003-10-31 | Tubular wire rod for double-electrode gas protective welding, its welding method and appts. |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101029390A Expired - Lifetime CN1251832C (en) | 2002-10-31 | 2003-10-31 | Tubular wire rod for double-electrode gas protective welding, its welding method and appts. |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3993150B2 (en) |
| KR (1) | KR100526489B1 (en) |
| CN (2) | CN1817550B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100646605B1 (en) * | 2005-11-14 | 2006-11-23 | 현대종합금속 주식회사 | A flux cored wire for electrogas arc welding |
| KR101253356B1 (en) * | 2006-09-20 | 2013-04-11 | 현대중공업 주식회사 | Horizontal Butt Welding for Hull structure |
| JP4986563B2 (en) | 2006-10-02 | 2012-07-25 | 株式会社神戸製鋼所 | Flux-cored wire for electrogas arc welding and 2-electrode electrogas arc welding method |
| JP2008100236A (en) * | 2006-10-17 | 2008-05-01 | Kawada Industries Inc | Method and device for manufacturing steel box pillar |
| JP5408055B2 (en) * | 2010-06-29 | 2014-02-05 | 新日鐵住金株式会社 | Manufacturing method of welded joint and welding apparatus for carrying out the method |
| JP5494292B2 (en) * | 2010-06-30 | 2014-05-14 | 新日鐵住金株式会社 | Manufacturing method of welded joint and welding apparatus for carrying out the manufacturing method |
| CN101885098A (en) * | 2010-07-07 | 2010-11-17 | 宋业全 | Welding method |
| KR101304740B1 (en) * | 2011-09-30 | 2013-09-05 | 주식회사 포스코 | Circumference welding method |
| CN102528308A (en) * | 2012-02-27 | 2012-07-04 | 江苏建筑职业技术学院 | Welding method for big-gap welding line |
| EP2695695B1 (en) * | 2012-08-08 | 2018-01-03 | ARVOS GmbH | Method for welding conduits |
| JP5797633B2 (en) | 2012-10-31 | 2015-10-21 | 株式会社神戸製鋼所 | Arc welding apparatus, constant voltage characteristic welding power source and arc welding method |
| JP6609493B2 (en) * | 2015-07-31 | 2019-11-20 | 株式会社神戸製鋼所 | Electrogas arc welding method and electrogas arc welding apparatus |
| CN108856970A (en) * | 2018-08-24 | 2018-11-23 | 南京钢铁股份有限公司 | The welding method of tandem electrogas welding suitable for high strength ultra-thick steel plates |
| CN110369829B (en) * | 2019-08-06 | 2021-08-31 | 深圳市瑞凌实业集团股份有限公司 | Electro-gas welding device and welding method |
| KR102396193B1 (en) * | 2020-07-15 | 2022-05-11 | 한국조선해양 주식회사 | electro gas welding method |
| CN112589233A (en) * | 2020-12-02 | 2021-04-02 | 上海江南长兴造船有限责任公司 | One-step forming welding method for hull structure panel |
| CN113305489A (en) * | 2021-06-23 | 2021-08-27 | 广西焊杰机器人技术有限公司 | Electric power tower base welding system and welding method thereof |
| CN114749760A (en) * | 2022-04-28 | 2022-07-15 | 广船国际有限公司 | Steel plate high heat input welding method |
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|---|---|---|---|---|
| CN1271634A (en) * | 1999-04-23 | 2000-11-01 | 日铁溶接工业株式会社 | Flux cord welding rod used in gas shielded arc welding |
| CN1328897A (en) * | 2001-08-08 | 2002-01-02 | 武汉钢铁(集团)公司 | Microtitanium-boron high-toughness gas protective welding stick |
| JP4309492B2 (en) * | 1998-05-29 | 2009-08-05 | 株式会社東芝 | Manufacturing method of semiconductor device |
-
2003
- 2003-08-27 JP JP2003303689A patent/JP3993150B2/en not_active Expired - Fee Related
- 2003-10-30 KR KR10-2003-0076505A patent/KR100526489B1/en active IP Right Grant
- 2003-10-31 CN CN2006100597107A patent/CN1817550B/en not_active Expired - Lifetime
- 2003-10-31 CN CNB2003101029390A patent/CN1251832C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4309492B2 (en) * | 1998-05-29 | 2009-08-05 | 株式会社東芝 | Manufacturing method of semiconductor device |
| CN1271634A (en) * | 1999-04-23 | 2000-11-01 | 日铁溶接工业株式会社 | Flux cord welding rod used in gas shielded arc welding |
| CN1328897A (en) * | 2001-08-08 | 2002-01-02 | 武汉钢铁(集团)公司 | Microtitanium-boron high-toughness gas protective welding stick |
Non-Patent Citations (1)
| Title |
|---|
| CN 1328897 A,权利要求1. |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3993150B2 (en) | 2007-10-17 |
| CN1251832C (en) | 2006-04-19 |
| KR20040038857A (en) | 2004-05-08 |
| KR100526489B1 (en) | 2005-11-08 |
| JP2004167600A (en) | 2004-06-17 |
| CN1498712A (en) | 2004-05-26 |
| CN1817550A (en) | 2006-08-16 |
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