CN207464414U - A kind of three wire bond rifles - Google Patents
A kind of three wire bond rifles Download PDFInfo
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- CN207464414U CN207464414U CN201721287765.3U CN201721287765U CN207464414U CN 207464414 U CN207464414 U CN 207464414U CN 201721287765 U CN201721287765 U CN 201721287765U CN 207464414 U CN207464414 U CN 207464414U
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Abstract
The utility model provides a kind of three wire bond rifles, and the welding wire of three wire bond rifles includes first heated filament and two cold silks.Three wire bonds rifle provided by the utility model, the two cold silks of heat melts generated using a heated filament, middle one cold silk of heat melts using two heated filaments compared with prior art, electric arc and the waste heat in molten bath can more effectively be absorbed, avoid the heat input of the welding gun thermal damage caused by base material, when being applied to cut deal welding, the forming quality of weld seam can be significantly promoted.In addition, three wire bonds rifle provided by the utility model there are two cold silks of filling, deposition efficiency can be more effectively improved, so as to improve welding efficiency under the premise of weldquality is ensured.
Description
Technical field
The utility model is related to welding technology field, particularly a kind of three wire bond rifles.
Background technology
In the production process of large-sized structural parts, there are a large amount of plank welding sequence, the efficiency and quality of plank welding
Directly influence the delivery cycle of product and the safety of structure.One of method for improving structural member producing efficiency is using single side
Weldering double-side molding process carrys out welded blank, and single face welding and double face shaping technique refers to only carries out welding in the front of plank, and ensures weldering
Connect the technique that the obverse and reverse of rear plank can obtain the satisfactory weld seam of surface and inherent quality.It is double compared to general
Face Welding, single face welding and double face shaping technique can save the processes such as plate turn, back root cleaning, so as to be obviously improved structural member
Producing efficiency.
The method of single face welding and double face shaping technique generally use submerged-arc welding is to plank welding.The welding wire of submerged-arc welding is from ignition tip
Extension elongation is shorter, therefore high current is used to weld, and belongs to the fusion welding method of high heat input.Horizontal, the submerged arc by high heat input
Welding technology can melt metal in the whole thickness of plank, so as to fulfill the single face welding and double face shaping to slab.In addition, submerged arc
In the welding process, electric arc burns under welding flux layer for weldering, the igniting of electric arc, the movement of electrode feeding and electric arc all using it is mechanical come
It completes, high degree of automation, weldquality are guaranteed, working condition is good.Submerged-arc welding can also be realized by automanual form,
I.e. the feeding of welding wire is completed by machinery, and the movement of electric arc is by being accomplished manually.
The welding efficiency of submerged-arc welding, mainly with the fusing amount that metal is filled in the unit interval, i.e. deposition rate is weighed.
For common submerged-arc welding, the method for improving deposition rate is to improve the heat input of unit interval.But excessively high heat input can be made
Into weld defects such as hump, undercuts.Therefore, the factor of heat input during welding constrains the raising of submerged-arc welding productivity, base material
The heat input that can bear limits the upper limit of productivity always.
For monofilament submerged-arc welding, the heat input in the unit interval can be properly increased using the technique of multiplewire submerged arc welding
Amount, so as to improve speed of welding.Multiplewire submerged arc welding refers to while uses the welding wire of two or two or more, completes same weld seam
Submerged arc soldering method.The essence of multiple-wire welding is the instantaneous power distribution changed in welding process on base material, i.e., inputs welding gun
Gross energy on to base material is suitably disperseed, so as to improve total heat input that base material can be born.It industrially uses at present
Multi-wire submerged-arc soldering method is welding some thick plates structures (large-scale hull, welded still pipe, thick-walled pressure vessel, H profile steel beam)
In, up to 3~6 wire feeding motors have been applied, the multiarc welding of 3~10 root wires can be carried out at the same time, have been greatly improved welding speed
Degree and production efficiency.But this multi sphere soldering method, the essence for improving speed of welding are by improving the method for heat input come real
Existing, problem on deformation caused by postwelding correction high heat input is generally required, and have ignored the thermal damage to base material.Especially weld
When connecing a kind of material of fine grain, high strength steel and heat sensitivity by force, in big energy input base material and weld seam, it will to base material and weldering
Seam causes pyrolytic damage, causes the heat affected area grain coarsening of base material, generates local softening phenomenon so that the mechanical property of heat affected area
Can be uneven, influence welding quality and performance.
In the 17th Beijing Essen welding in 2012 with cutting in exhibition, it is cold that Yi Sa companies propose completely new auxiliary
Silk submerged welding process.It is a piece cold silk of insertion among two parallel heated filaments, cold to melt using the extra heat of heated filament
Silk in the case where not changing total heat input value, improves deposition rate, so as to improve speed of welding.The technology uses one not
The cold silk of filling be powered, not heated is automatically inserted into the molten bath of overheat, is absorbed its waste heat, is balanced the distribution of molten bath heat
Than, and metal is filled as weld seam, postwelding procedure qualification shows that Weld Performance is excellent, and welding heat affected zone significantly narrows, hot shadow
Area is rung without ruckbildung to occur.
But the above-mentioned waste heat using two heated filaments melts the submerged arc welding technique of cold silk, still has higher heat input value,
Suitable for being welded to slab.For cut deal (thickness is 8~30mm), since its thickness is less than slab, to heat input
It is more sensitive, if welding parameter control is improper, welding deformation easily occurs and causes base material thermal damage.Therefore, how will
Cold silk technology is applied to the welding of cut deal, in the case where control is to the total heat input level of plank, ensures appearance of weld matter
Under the premise of amount, deposition rate is further improved, is that those skilled in the art needs to inquire into so as to improve the welding efficiency of cut deal
The problem of.
Utility model content
The technical problems to be solved in the utility model is how to provide a kind of welding gun suitable for cut deal welding and bury
Arc welding method in the case where not increasing heat input, improves deposition rate, so as to obtain the weld seam met the requirements and not damage
Under the premise of base material, welding efficiency is improved.
The utility model provides a kind of three wire bond rifles, one first heat being pierced by including torch body and from torch body
Subpoint of the forward terminal of silk and two cold silks, the forward terminal of the first heated filament and two cold silks on welded piece surface is located at same
On straight line, the subpoint of the first heated filament is located between the subpoint of two cold silks, wherein, the first heated filament is connected with power supply, and two
The cold silk of root is not connected with power supply.
Further, two cold silks are symmetrical arranged relative to the outrigger shaft of the first heated filament, the outrigger shaft of cold silk and the first heat
The outrigger shaft of silk has angle, and angle causes the first heated filament and the generation direction of two cold silks towards electric arc to gather.
Further, the diameter of two cold silks is equal, and the diameter of the first heated filament is more than the diameter of every cold silk.
Three wire bonds rifle provided by the utility model, including first heated filament and two cold silks so that the first heated filament it is remaining
Heat can be more fully utilized, and in the case where not improving thermal weld stress, can more effectively improve deposition rate, thus
Ensure to improve welding efficiency under the premise of weldquality.
Description of the drawings
Fig. 1 is a kind of welding tractor structure chart；
Fig. 2 is the structure chart of three wire bonds rifle provided by the utility model；
Fig. 3 is the structure chart of another three wire bonds rifle provided by the utility model；
Fig. 4 is plank connected mode schematic diagram；
Fig. 5 is the flow chart of multi-wire submerged-arc soldering method provided by the utility model；
Fig. 6 is the welding gun structure figure used in multi-wire submerged-arc soldering method provided by the utility model；
Fig. 7 is the divided edge structure figure in multi-wire submerged-arc soldering method provided by the utility model；
Fig. 8 a~Fig. 8 c are the appearance of weld figure realized using multi-wire submerged-arc soldering method provided by the utility model.
Component label instructions
100 welding tractors
110 3 wire bond rifle, 111 torch body, 113 first heated filament
114 cold 115 cold silks of silk
120 wire reels
130 flux hoppers
140 wire feeders
Rifle before 150
Rifle after 160
170 walking dollies
200 plank, 201 plank, 202 plank, 203 weld seam
301 liner, 302 forming solder flux
The pre-splicing steps of S100
S101 opens groove step processed
S102 tack-weld steps
S103 pavings spill reverse side forming solder flux step
S200 preheating steps
S300 submerged-arc welding steps
Specific embodiment
Presently in connection with attached drawing, the better embodiment of the utility model is discussed in detail.Although the description of the utility model will
It is introduced together with reference to each embodiment, but this feature for not representing this utility model is only limitted to the several embodiments.Just
Just on the contrary, with reference to the purpose that embodiment makees utility model introduction being had to cover based on the claim of the utility model
The other selections or transformation that may extend.It will include and be permitted in order to provide the depth understanding to the utility model, in being described below
More concrete details.The utility model can not also be implemented using these details.In addition, in order to avoid this chaotic or fuzzy practicality
Novel emphasis, some details will be omitted in the de-scription.
" on ", " under ", "left", "right", " top ", " bottom ", are in order to preferably in addition, used in the following description
It describes the better embodiment of the utility model and sets, should not be construed as a limitation of the present invention.
Submerged arc soldering equipment includes the source of welding current, welding tractor and control cabinet, and Fig. 1 shows a kind of structure chart of welding tractor 100.Welding tractor
100 are made of welding gun, walking dolly (not shown), wire reel 120, flux hopper 130 and wire feeder 140 etc..Before welding gun
End is provided with ignition tip, and ignition tip can be connected with the source of welding current.During welding, by flux hopper 130, equably heap is applied to weldering to solder flux
The place to be welded of part, welding wire are sent into welding section, welding wire and base material of the electric arc below solder flux by ignition tip of the wire reel 120 through welding gun
Between burn.Walking dolly drives welding tractor 100 to move forward so that electric arc is moved forward along welding direction, until completing whole
Weld seam.
Welding wire is the part that electric arc is directly generated in welding equipment, many technological parameters during welding, such as welding current,
Weldingvoltage, wire feed rate etc. are all completed by the control to welding wire.As shown in Figures 2 and 3, the utility model provides one
Three wire bond rifles 110 of kind, three wire bond rifles 110 include torch body 111 and three root wires being pierced by from the front end of torch body 111,
Three root wires are sliding contact with torch body 111, so that more root wires can forward be sent under the control of wire feeder 140
Into.In the utility model, three wire bond rifles 110 include first heated filament 113 and two cold silks, respectively cold silk 114 and cold
Silk 115, wherein, the first heated filament 113 can be connected with the source of welding current, and cold silk 114 and cold silk 115 are not connected with power supply.In a reality
Apply in example, the front end of torch body 111 is provided with ignition tip, and the quantity of ignition tip can be one or more, the first heated filament 113 from
It is passed through in one ignition tip and sliding contact therewith, cold silk 114, cold silk 115 can be passed through from ignition tip, it also can not be from ignition tip
In pass through.When cold silk 114 and cold silk 115 are passed through from ignition tip 112, accommodate the ignition tip of cold silk 114 and cold silk 115 not with
Power supply connects.When ignition tip connects power supply, the first heated filament 113 contacted can be conducted electrical currents to.It is i.e. new in this practicality
In type, the welding wire of energization is referred to as heated filament, on the contrary, cold welding wire is referred to as cold silk.In one embodiment, it each leads
Only have a root wire in sparking plug to pass through.In the utility model, the front end of welding gun refers to welding gun close to one end of electric arc, and welding wire is forward
It is sent into refer to and is sent into welding wire to the direction of arc burning, the forward terminal of welding wire refers to welding wire in the endpoint for generating electric arc side.
When the first heated filament 113, which is powered, generates electric arc between base material, base material and wire melting can be made so as to form molten bath.
Cold silk 114 and cold silk 115 are transported under the control of wire feeder 140 in the molten bath of overheat, absorb the extra of electric arc and molten bath
Energy, cold silk 114 and cold silk 115 after fusing are filled into as filling metal in weld seam.Three wire bond provided by the utility model
Rifle utilizes two cold silks of heat melts that a heated filament generates, compared with prior art the middle heat melts one using two heated filaments
Cold silk can more effectively absorb electric arc and the waste heat in molten bath, avoid the heat input of the welding gun thermal damage caused by base material, will
When it is applied to cut deal welding, the forming quality of weld seam can be significantly promoted.In addition, three wire bonds rifle provided by the utility model
There are two cold silks of filling, deposition efficiency can be more effectively improved, so as to improve welding efficiency under the premise of weldquality is ensured.
Further, as shown in Figures 2 and 3, the forward terminal of cold silk 114, the forward terminal of cold silk 115 and the first heated filament 113
Forward terminal welded piece surface subpoint generally on same straight line, the subpoint of the first heated filament 113 is located at cold
Between silk 114 and the subpoint of cold silk 115.In the welding process, subpoint of three root wires on welded piece surface is located at same
On one straight line, so that the front end of two cold silks is inserted into the molten bath of the first heated filament 113 formation, more effectively
Absorb electric arc and the waste heat in molten bath.Simultaneously because the waste heat of the first heated filament 113 radiates around, therefore by cold silk 114
The both sides of the first heated filament 113 are respectively arranged at cold silk 115.
Further, cold silk 114 and cold silk 115 are symmetrical arranged relative to the outrigger shaft of the first heated filament 113 so that the first heat
The waste heat of silk 113 obtains more adequately utilizing.The outrigger shaft of cold silk 114, the outrigger shaft of cold silk 115 respectively with the first heated filament
113 outrigger shaft has angle, which causes the first heated filament 113, cold silk 114 and cold silk 115 being sent into forward along welding wire
Gather on direction, but do not intersect.In one embodiment, the outrigger shaft of cold silk 114, the outrigger shaft of cold silk 115 can be
Shown in Fig. 2 linear, in another embodiment, the outrigger shaft of cold silk 114, the outrigger shaft of cold silk 115 can also be Fig. 3 institutes
The polyline shaped shown.In this way, the forward terminal and cold silk 114 of the first heated filament 113, cold silk 115 forward terminal between can keep smaller
Spacing, so that the waste heat of the first heated filament 113 can effectively melt cold silk 114 and cold silk 115.But in three root wires and welding gun
The root of connection keeps relatively large distance respectively, ignition tip can not only be made to have enough assembly spaces, while can prevent
The root that two cold silks are connected with welding gun is preheated too early, come off too early so as to generate coating, certain ingredient extreme prematurities it is biochemical
The negative consequences such as reaction.
Further, the wire feed rate of the first heated filament 113, cold silk 114 and cold silk 115 can be carried out by wire feeder 140
Independent control, so as to individually adjust the first heated filament 113, cold silk 114 and the wire feed rate of cold silk 115 according to actual needs, with
Form good weld seam.In another embodiment, the wire feed rate of cold silk 114 and cold silk 115 can be controlled simultaneously, so that
Cold silk 114 is identical with the wire feed rate of cold silk 115.In addition, the material of the first heated filament 113, cold silk 114 and cold silk 115 is logical
Solder wire material can be selected according to the type of base material.In one embodiment, the diameter of cold silk 114 and cold silk 115
Diameter is respectively smaller than the diameter of the first heated filament 113, so that cold silk 114 and cold silk 115 can effectively melt, in another reality
It applies in example, the diameter of cold silk 114 and the diameter of cold silk 115 are equal.
The utility model additionally provides a kind of multi-wire submerged-arc soldering method, for 200 welding of plank, the connection of plank 200
Form is as shown in Figure 4.Specifically, plank 200 includes plank 201 and plank 202 to be welded, and plank 201 and plank 202 pass through
Weld seam 203 connects, wherein, in plank 201 and plank 202 compared with gauge of sheet be D.In the utility model, the range of thickness D
For 8~30mm.In one embodiment, when plank 201 and plank 202 to be spliced have different thickness, also to thicker
Plate carries out chamfered edge processing.
As shown in figure 5, the pre-splicing step S100 of multi-wire submerged-arc soldering method provided by the utility model including plank 200 and
Submerged-arc welding step S300 is carried out to plank 200.
Pre-splicing step S100 refers to the position of mobile plank 201 and/or plank 202 so that plank 201 and plank 202
Position to be welded is mutually aligned, and its relative position relation meets design requirement, to implement subsequent submerged-arc welding step S300.
Further, in pre-splicing step S100, tack-weld step S102 can also be included, i.e., to plank 201 and plank 202 into
Row tack-weld ensures it in subsequent submerged-arc welding step S300, and the relative position relation of plank 201 and plank 202 will not
It changes, to ensure quality of weld seam molding.
Submerged-arc welding step S300 refers to carries out formal welding to plank 200, is all met with forming appearance condition and mechanical property
It is required that weld seam.In the utility model, preceding rifle 150 can be used to carry out submerged-arc welding, preceding rifle to plank 200 for submerged-arc welding step S300
150 be three wire bonds rifle 110 provided by the utility model.In addition as shown in fig. 6, the utility model can also use preceding 150 He of rifle
Rifle 160 is synchronized afterwards carries out submerged-arc welding to plank 200.Welding gun moves forward under the drive of walking dolly 170 along welding direction, directly
To the welding for completing whole weld seam.Multi-wire submerged-arc soldering method provided by the utility model, using three wire bond rifles 110 to plank 201
It is welded with plank 202, i.e., the two cold silks of heat melts generated using a heated filament, it is middle compared with prior art to utilize two
One cold silk of heat melts of heated filament, can more effectively absorb electric arc and the waste heat in molten bath, avoid the heat input pair of welding gun
Thermal damage caused by base material when being applied to cut deal welding, can significantly promote the forming quality of weld seam.In addition, three
Welding gun 110 has two cold silks of filling, can more effectively improve deposition efficiency, so as to improve weldering under the premise of weldquality is ensured
Connect efficiency.Multi-wire submerged-arc soldering method provided by the utility model is also using rush-harvesting and rush-planting synchronous welding, in the feelings that total heat input is constant
Under condition, disperse the instantaneous power in molten bath, improve joint performance.Further, multi-wire submerged-arc soldering method provided by the utility model,
Per pass welding can also be controlled to avoid causing to damage to base material to the heat input of plank by the way of multi-pass welding.
When welding cut deal, need strictly to control welding parameter, to obtain the weld seam for meeting quality requirement.Weldering
It connects parameter and mainly includes welding current, weldingvoltage, cold silk speed and speed of welding.Wherein, weld penetration and welding current into
Direct ratio, with the increase of welding current, fusion penetration and weld reinforcement dramatically increase, and the change width of weld seam is little, but weld
Connect electric current it is too big when weld heat input (heat input refers to the heat input of unit length) can be caused excessive, cause weld defect.Electric arc
The increase of voltage, weld width significantly increase, and fusion penetration and weld reinforcement are then declined.When arc voltage is too big, not only make
Fusion penetration becomes smaller, and can lead to the defects of appearance of weld is poor, de- slag is difficult or even generates undercut.When other welding parameters are constant
When and during speed of welding increase, thermal weld stress amount accordingly reduces, so as to which the fusion penetration of weld seam and thickness be made also to reduce, weld reinforcement
Slightly increase.Therefore, it to obtain the weld seam of satisfactory quality, needs to be adjusted each welding parameter so that between each parameter,
Each parameter and matched between the performance of weldering base material.
In addition, cold silk speed is also to ensure the key parameter of weldquality.Suitable cold silk loading can increase weld seam
Height or reinforcement reduce the grain size of weld seam, improve the mechanical performance in subtended angle region, adjust weld shape, therefore mechanicalness
It can be improved.Cold silk wire feed rate may result in the defects of weld seam incomplete fusion, slag inclusion slowly excessively, too fast to may result in
Haircuts, incomplete fusion, welding wire are stabbed into adverse effects such as molten baths.So it must be strictly controlled cold silk filling speed and loading, it is ensured that
The surface quality of weld seam and every mechanical property.
In the submerged-arc welding step S300 of the utility model, the welding road number of submerged-arc welding step is n (n >=1) road, each road welding
Speed of welding be vn=360~1050mm/min；
In the n-th welding, the welding parameter of preceding rifle is：Welding current I1n=600~1290A, weldingvoltage U1n=31
~41V, the wire feed rate w of cold silkn=(1.2~3.9) vn；The welding parameter of rifle is afterwards：Welding current I2n=500~750A,
Weldingvoltage U2n=35~41V.
The wire feed rate of first heated filament 113 and the welding current I of preceding rifle 1501nIt is directly proportional, the determining method of concrete numerical value
It is identical with the determining method of wire feed rate in common welding, it is not limited thereto.
By largely testing proof, when meeting above-mentioned parameter condition, it can obtain surface quality and mechanical property be full
The weld seam required enough.In addition, it is welded using multi-wire submerged-arc Welding centering slab provided by the utility model, in weld seam matter
Under the premise of amount is met the requirements, the welding procedure that speed of welding can be more traditional improves 20%.
Further, when centering thick plates, the diameter range of the first heated filament 113 is 4.8mm~5.0mm, cold silk 114
Diameter range with cold silk 115 is 1.3mm~1.9mm.In view of the versatility of welding wire, preferably the first heated filament 113 is a diameter of
A diameter of 1.6mm of 4.8mm, cold silk 114 and cold silk 115.Between the forward terminal of first heated filament 113 and the forward terminal of cold silk 114,
The distance between the forward terminal of first heated filament 113 and the forward terminal of cold silk 115 are 7mm~13mm, it is contemplated that the versatility of welding gun,
Between the forward terminal of first heated filament 113 and the forward terminal of cold silk 114, the forward terminal of the forward terminal of the first heated filament 113 and cold silk 115
The distance between preferably 10mm.
Further, when being carried out at the same time synchronous welding to plank 200 using preceding rifle 150 and rear rifle 160, along welding side
To rear rifle 160 is located at the rear of preceding rifle 150, and the distance between preceding rifle 150 and rear rifle 160 are 30~60mm.Further,
The heat input of rifle 160 is less than the heat input of preceding rifle 150 afterwards.
Further, rear rifle 160 includes two second heated filaments, and a diameter of 1.3mm~1.9mm of two second heated filaments is examined
Consider the versatility of welding wire, the diameter of the second welding wire is preferably 1.6mm.The spacing of two second heated filaments is 6mm~10mm, is considered
To the versatility of welding gun, the spacing of preferably two second heated filaments is 8mm.In one embodiment, preceding rifle 150 is due to there was only one
First heated filament 113, therefore weld penetration is ensured using DC power supply, rear rifle 160 uses exchange due to including two second heated filaments
Power supply effectively avoids arc blow.
The wire feed rate of second heated filament and the welding current I of rear rifle 1602nIt is directly proportional, the determining method of concrete numerical value with
The determining method of wire feed rate is identical in common welding, is not limited thereto.
Further, it as ranging from 8mm≤D≤13mm of the thickness D of plank 200, since plank 200 is relatively thin, is burying
In arc-welding step S300, submerged-arc welding, and the welding in submerged-arc welding step S300 are preferably carried out to plank 200 using only preceding rifle 150
Road number is 1；As the ranging from 13mm of the thickness D of plank 200<It is synchronous to plate using preceding rifle 150 and rear rifle 160 during D≤30mm
Material carries out submerged-arc welding, and the instantaneous heat input of Butt welding gun is disperseed, and avoids carrying out thermal damage to plank.
Further, as ranging from 8mm≤D≤10mm of the thickness D of plank 200, the welding of submerged-arc welding step S300
Parameter is：Speed of welding v1=490~620mm/min, compared to traditional welding method, which improves 20%；Before
The welding parameter of rifle 150 is：Welding current I11=600~800A, weldingvoltage U11=31~36V, the wire feed rate w of cold silk1
=60~100cm/mm；As the ranging from 10mm of the thickness D of plank<During D≤13mm, the welding parameter of submerged-arc welding step is：Weldering
Meet speed v1=360~500mm/min, compared to traditional welding method, which improves 20%；The weldering of preceding rifle 150
Connecing parameter is：Welding current I11=650~850A, weldingvoltage U11=32~37V, the wire feed rate w of cold silk1=100~
150cm/mm。
Further, with the increase of plate thickness D, more welding road numbers can be used, control per pass welding is to plank 200
Heat input avoids that base material is caused to damage.Preferably, as the ranging from 8mm of 200 thickness D of plank<During D≤15mm, submerged-arc welding
Welding road number in step S300 is 1；When the range of 200 thickness D of plank increases to 15mm<During D≤28mm, submerged-arc welding step
Welding road number n=2 in S300；When the range of 200 thickness D of plank is further increased to 28mm<During D≤30mm, submerged-arc welding step
Welding road number n=2~5 in rapid S300；Wherein, the thermal weld stress of filler pass is less than the thermal weld stress of backing run.
Further, as the ranging from 13mm of 200 thickness D of plank<During D≤15mm, the welding ginseng of submerged-arc welding step S300
Number is：Speed of welding v1=620~900mm/min, compared to traditional welding method, which improves 20%；Preceding rifle
150 welding parameter is：Welding current I11=950~1200A, weldingvoltage U11=35~41V, the wire feed rate w of cold silk1=
200~310cm/mm；The welding parameter of rifle 160 is afterwards：Welding current I21=500~650A, weldingvoltage U11=35~41V.
Further, when the range of 200 thickness D of plank increases to 15mm<During D≤18mm, the weldering of submerged-arc welding step S300
Connecing parameter is：Speed of welding v1=620~900mm/min, v2=620~900mm/min, compared to traditional welding method, the weldering
It connects speed and improves 20%；The welding parameter of preceding rifle 150：Welding current I11=950~1150A, welding current I12=980~
1100A, weldingvoltage U11=35~41V, U12=35~41V, the wire feed rate w of cold silk1=200~310cm/mm, w2=200
~310cm/mm；The welding parameter of rifle 160 afterwards：Welding current I21=550~680A, welding current I22=580~700A, weldering
Meet voltage U21=35~41V, U22=35~41V；As the ranging from 18mm of 200 thickness D of plank<During D≤28mm, submerged-arc welding step
Suddenly the welding parameter of S300 is：Speed of welding v1=700~1050mm/min, v2=600~800mm/min, compared to traditional weldering
Method is connect, which improves 20%；The welding parameter of preceding rifle 150：Welding current I11=980~1210A, welding current
I12=700~890A, weldingvoltage U11=35~41V, U12=35~41V, the wire feed rate w of cold silk1=175~250cm/
Mm, w2=200~310cm/mm；The welding parameter of rifle 160 afterwards：Welding current I21=550~600A, welding current I22=600
~740A, weldingvoltage U21=35~41V, U22=35~41V.
Further, as the ranging from 28mm of 200 thickness D of plank<During D≤30mm, the welding ginseng of submerged-arc welding step S300
Number is：Speed of welding v1=700~1050mm/min, v2~5=600~800mm/min；The welding parameter of preceding rifle 150：Welding electricity
Flow I11=965~1290A, welding current I12=700~800A, weldingvoltage U11=35~41V, U12=35~41V, cold silk
Wire feed rate w1=175~250cm/mm, w2=200~310cm/mm；The welding parameter of rifle 160 afterwards：Welding current I21=
540~690A, welding current I22=600~750A, weldingvoltage U21=35~41V, U22=35~41V.
In one embodiment, as shown in figure 5, in pre-splicing step S100, before further including tack-weld step S102
Open groove step S101 processed.In the utility model, slope type is preferably Y type grooves, as shown in Figure 7.Bevel angle α=
60 °~70 °, with the increase of plate thickness, bevel angle is gradually reduced, 0~3mm of root face, 0~3mm of gap.For different plate thickness,
Preferred groove size parameter see the table below.
| Serial number | Plate thickness D/mm | Bevel angle α | Root face F/mm | Gap R/mm | Misalignment/mm |
| 1 | 8 | 70° | 0 | ≤0.5 | ≤0.5 |
| 2 | 10 | 70° | 0 | ≤0.5 | ≤0.5 |
| 3 | 12 | 70° | 1~3 | ≤0.5 | ≤0.5 |
| 4 | 14 | 70° | 1~3 | ≤0.5 | ≤0.5 |
| 5 | 16 | 70° | 1~3 | ≤0.5 | ≤0.5 |
| 6 | 20 | 60° | 1~3 | ≤0.5 | ≤0.5 |
| 7 | 26 | 60° | 1~3 | ≤0.5 | ≤0.5 |
| 8 | 30 | 60° | 1~3 | ≤0.5 | ≤0.5 |
In one embodiment, as shown in figure 5, pre-splicing step S100, which further includes paving, spills reverse side forming solder flux step
S103.As shown in fig. 7, in single face welding and double face shaping technique, to ensure the shape of reverse side weld seam, pacify in the reverse side of plank 200
Dress forces molding copper lining 301, and the shape of weld seam is made to meet design requirement.In a preferred embodiment, in copper lining 301
Forming solder flux 302 is spilt on upper berth, not only improves the forming of weld seam, is also beneficial to protection copper lining 301.
In one embodiment, as shown in figure 5, further including preheating step S200 before submerged-arc welding step S300, i.e., to plank
200 are preheated, and preheating can reduce temperature difference (also referred to as temperature gradient) of the plank 200 in welding region.In this way, it on the one hand drops
On the other hand low welding stress, reduces weld strain rate, be conducive to avoid generating weld crack.In the utility model
In, for the cut deal of thickness D=8~30, preheating temperature is preferably 20 DEG C.
In one embodiment, the trade mark of plank 200 is A709-50-2 or Q345, and the steel of the trade mark belong to fine grain
High strength steel, to welding when heat input it is more sensitive, using the utility model provide three wire bond rifles carry out multiplewire submerged arc welding, can
Obtain good formed weld.
It is exemplified below specific embodiment and illustrates welding parameter in multi-wire submerged-arc soldering method provided by the utility model, need
Illustrate, in practical operation, on the basis of the numerical value provided in following embodiments, voltage can fluctuate in the range of ± 3V,
Electric current can fluctuate in the range of ± 115A, and cold silk speed can fluctuate in the range of ± 25%, and speed of welding can be in ± 20% range
Interior fluctuation.
【Embodiment 1】
Sheet metal thickness D=8mm, welding gun are preceding rifle 150, and welding road number is 1；
Preceding 150 welding parameter of rifle：Welding current I11=700A, weldingvoltage U11=33V, the wire feed rate w of cold silk1=
80cm/mm, speed of welding v1=555mm/min.
【Embodiment 2】
Sheet metal thickness D=10mm, welding gun are preceding rifle 150, and welding road number is 1；
Preceding 150 welding parameter of rifle：Welding current I11=720A, weldingvoltage U11=33V, the wire feed rate w of cold silk1=
80cm/mm, speed of welding v1=550mm/min.
【Embodiment 3】
Sheet metal thickness D=12mm, welding gun are preceding rifle 150, and welding road number is 1；
Preceding 150 welding parameter of rifle：Welding current I11=750A, weldingvoltage U11=35V, the wire feed rate w of cold silk1=
128cm/mm, speed of welding v1=430mm/min.
【Embodiment 4】
Sheet metal thickness D=14mm, welding gun are preceding rifle 150 and the welding simultaneously of rear rifle 160, and welding road number is 1；
Preceding 150 welding parameter of rifle：Welding current I11=1075A, weldingvoltage U11=38V, the wire feed rate w of cold silk1=
255cm/mm, speed of welding v1=760mm/min；
160 welding parameter of rifle afterwards：Welding current I21=580A, weldingvoltage U21=38V.
【Embodiment 5】
Sheet metal thickness D=16mm, welding gun are preceding rifle 150 and the welding simultaneously of rear rifle 160, and welding road number is 2；
First of welding：
Preceding 150 welding parameter of rifle：Welding current I11=1050A, weldingvoltage U11=38V, the wire feed rate w of cold silk1=
255cm/mm, speed of welding v1=760mm/min；
160 welding parameter of rifle afterwards：Welding current I21=615A, weldingvoltage U21=38V；
Second welds：
Preceding 150 welding parameter of rifle：Welding current I12=1040A, weldingvoltage U12=38V, the wire feed rate w of cold silk2=
255cm/mm, speed of welding v2=760mm/min；
160 welding parameter of rifle afterwards：Welding current I22=640A, weldingvoltage U22=38V.
【Embodiment 6】
Sheet metal thickness D=20mm, welding gun are preceding rifle 150 and the welding simultaneously of rear rifle 160, and welding road number is 2；
First of welding：
Preceding 150 welding parameter of rifle：Welding current I11=1100A, weldingvoltage U11=38V, the wire feed rate w of cold silk1=
215cm/mm, speed of welding v1=875mm/min；
160 welding parameter of rifle afterwards：Welding current I21=575A, weldingvoltage U21=38V；
Second welds：
Preceding 150 welding parameter of rifle：Welding current I12=795A, weldingvoltage U12=38V, the wire feed rate w of cold silk2=
255cm/mm, speed of welding v2=700mm/min；
160 welding parameter of rifle afterwards：Welding current I22=670A, weldingvoltage U22=38V.
【Embodiment 7】
Sheet metal thickness D=26mm, welding gun are preceding rifle 150 and the welding simultaneously of rear rifle 160, and welding road number is 2；
First of welding：
Preceding 150 welding parameter of rifle：Welding current I11=1150A, weldingvoltage U11=38V, the wire feed rate w of cold silk1=
215cm/mm, speed of welding v1=875mm/min；
160 welding parameter of rifle afterwards：Welding current I21=580A, weldingvoltage U21=38V；
Second welds：
Preceding 150 welding parameter of rifle：Welding current I12=810A, weldingvoltage U12=38V, the wire feed rate w of cold silk2=
255cm/mm, speed of welding v2=700mm/min；
160 welding parameter of rifle afterwards：Welding current I22=700A, weldingvoltage U22=38V.
【Embodiment 8】
Sheet metal thickness D=30mm, welding gun are preceding rifle 150 and the welding simultaneously of rear rifle 160, and welding road number is 2~5；
First of welding：
Preceding 150 welding parameter of rifle：Welding current I11=1130A, weldingvoltage U11=38V, the wire feed rate w of cold silk1=
215cm/mm, speed of welding v1=875mm/min；
160 welding parameter of rifle afterwards：Welding current I21=615A, weldingvoltage U21=38V；
2nd~5 welding：
Preceding 150 welding parameter of rifle：Welding current I12=750A, weldingvoltage U12=38V, the wire feed rate w of cold silk2=
255cm/mm, speed of welding v2=700mm/min；
160 welding parameter of rifle afterwards：Welding current I22=660A, weldingvoltage U22=38V.
Above-described embodiment postwelding interpretation of result：
1st, non-destructive testing
Postwelding after 48 hours according to AWS D1.1 standards (U.S.'s welding for steel structure specification) respectively to weld seam carry out RT, UT,
MT nondestructive inspections, result of detection are qualified.
2nd, mechanical property
Weld seam is stretched, is bent, mechanical tests, the mechanical test result such as hardness and impact flexibility are qualification,
Result of the test is shown in Table a, table b and table c.Result of the test shows that, using multi-wire submerged-arc soldering method provided by the utility model, welding connects
Tensile strength, yield strength of head etc. are satisfied by corresponding requirements.In addition respectively to weld metal zone, welding heat affected zone and base material gold
Belong to sampling and carry out impact test, impact test value is shown in Table d, is shown by impact test and welding condition new using this practicality
The multi-wire submerged-arc soldering method that type provides, not only increases the deposition efficiency of welding, and reduce heat input, improves weld seam punching
Hit performance and weldquality.
Table a stretch test results
| Tensile strength/MPa | Fracture position | Result of the test |
| ≥470 | Base material | It is qualified |
Table b bend test results
| Pressure head diameter | Bending angle | Result of the test |
| 38.1mm | 180° | It is qualified |
Table c hardness test results
| Base material | Heat affected area | Weld seam | Result of the test |
| ≤325HV10 | ≤325HV10 | ≤325HV10 | It is qualified |
Table d impact ductility test results
3rd, appearance of weld and section
Fig. 8 a and Fig. 8 b are the shape of weld seam, and Fig. 8 c are the section of weld seam, using multi-wire submerged-arc provided by the utility model
The defects of for soldering method, it can be achieved that one side welding with back formation, bead contour is smooth, and weld seam section is uniform, and nothing is mingled with, stomata, weld seam
It shapes excellent.
In conclusion the utility model provides a kind of three wire bond rifles, the welding wire of three wire bond rifles includes first heated filament
With two cold silks.The utility model additionally provides a kind of multi-wire submerged-arc soldering method, is welded using above-mentioned three wire bonds rifle.This reality
With the three wire bond rifles and multi-wire submerged-arc soldering method of novel offer, the two cold silks of heat melts generated using a heated filament are compared
In the prior art using one cold silk of heat melts of two heated filaments, electric arc and the waste heat in molten bath can be more effectively absorbed,
The heat input of the welding gun thermal damage caused by base material is avoided, when being applied to cut deal welding, can significantly promote weld seam
Forming quality.In addition, three wire bonds rifle provided by the utility model there are two cold silks of filling, deposition efficiency can be more effectively improved,
So as to improve welding efficiency under the premise of weldquality is ensured.
Above-mentioned explanation is the embodiment of specific embodiment in the utility model, for being illustrated more clearly that this practicality is new
The utility model design of type, but it is for the restriction of the right to the utility model that it, which is not,.It is new according to this practicality
The utility model design of type, those skilled in the art can easily variants and modifications the above embodiments, these belong to this reality
It is all contained within the scope of the utility model appended claims with the variants and modifications in novel utility model design.
Claims (3)
- A kind of 1. three wire bond rifles, which is characterized in that first heated filament being pierced by including torch body and from the torch body With two cold silks, the forward terminal of the forward terminal of first heated filament and two cold silks is in the subpoint position on welded piece surface In on same straight line, the subpoint of first heated filament is located between the subpoint of two cold silks, wherein, described first Heated filament is connected with power supply, and two cold silks are not connected with power supply.
- 2. three wire bonds rifle according to claim 1, which is characterized in that two cold silks are relative to first heated filament Outrigger shaft is symmetrical arranged, and the outrigger shaft of the cold silk and the outrigger shaft of first heated filament have angle, and the angle causes institute Gather in the generation direction for stating the first heated filament and the two cold silks towards electric arcs.
- 3. three wire bonds rifle according to claim 1, which is characterized in that the diameter of two cold silks is equal, and described first The diameter of heated filament is more than the diameter of the every cold silk.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721287765.3U CN207464414U (en) | 2017-09-30 | 2017-09-30 | A kind of three wire bond rifles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721287765.3U CN207464414U (en) | 2017-09-30 | 2017-09-30 | A kind of three wire bond rifles |
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ID=62267674
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| CN (1) | CN207464414U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717189A (en) * | 2017-09-30 | 2018-02-23 | 上海振华重工(集团)股份有限公司 | A kind of three wire bond rifles and multi-wire submerged-arc soldering method |
| CN110681948A (en) * | 2019-09-26 | 2020-01-14 | 华中科技大学 | Single-power-supply three-wire co-molten-drop electric arc additive manufacturing system |
-
2017
- 2017-09-30 CN CN201721287765.3U patent/CN207464414U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717189A (en) * | 2017-09-30 | 2018-02-23 | 上海振华重工(集团)股份有限公司 | A kind of three wire bond rifles and multi-wire submerged-arc soldering method |
| CN107717189B (en) * | 2017-09-30 | 2023-12-26 | 上海振华重工(集团)股份有限公司 | Three-wire welding gun and multi-wire submerged arc welding method |
| CN110681948A (en) * | 2019-09-26 | 2020-01-14 | 华中科技大学 | Single-power-supply three-wire co-molten-drop electric arc additive manufacturing system |
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