CN208945411U - A kind of divided edge structure of steel plate welding - Google Patents
A kind of divided edge structure of steel plate welding Download PDFInfo
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- CN208945411U CN208945411U CN201821099788.6U CN201821099788U CN208945411U CN 208945411 U CN208945411 U CN 208945411U CN 201821099788 U CN201821099788 U CN 201821099788U CN 208945411 U CN208945411 U CN 208945411U
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Abstract
The utility model relates to steel plate welding technology fields, and in particular to a kind of divided edge structure of steel plate welding.Divided edge structure is in two-sided Y type, the divided edge structure includes the front groove set gradually from top to bottom, intermediate root and backing groove, the angle of the front groove is 60 °, the depth of the front groove is the half of the divided edge structure total depth, the intermediate root is 3mm, the angle of the backing groove is 70 °, and first steel plate and the second steel plate docking back root part gap are 0~2mm；Welding layer is equipped in divided edge structure.The divided edge structure of the utility model makes backing groove without carbon plane directly with submerged-arc welding seam in welding, wherein the welding current of second submerged-arc welding can only be 90~110A smaller than the welding current of first of submerged-arc welding, can get the weld seam for forming good and performance qualification.
Description
Technical field
The utility model relates to steel plate welding technology fields, and in particular to a kind of divided edge structure of steel plate welding.
Background technique
Submerged-arc welding be during ship jigsaw it is a kind of commonly using welding method.Usually to plate thickness >=22mm steel plate into
Two-sided Y type groove is mainly used when row submerged welding process, steel plate turns over after the submerged arc welding of weld seam front, and back of weld is through carbon
Submerged-arc welding is carried out after arc gouge back chipping again, and flame straightening is carried out to high-strength steel and reprocesses the tissue and performance of meeting Welded Joints
Detrimental effect is brought, and increases cost of goods manufactured.Traditional divided edge structure as shown in Figure 1, can not during welding
Welding parameter welding is required according to technique, causes fillet in normal shear fusion penetration that the half of mother metal thickness is not achieved, back side carbon arc air gouging is clear
After root, backing groove angle dwindles into about 30 ° by 60 °, to form narrow and deep groove structure, this divided edge structure can generate with
Under bad result: appearance of weld coefficient difference, scarfing cinder are not easy, and are also easy to produce weld seam slag inclusion and solidification cracking defect, and post welding distortion is serious.
Utility model content
It is welded the technical problem to be solved by the utility model is to provide a kind of suitable for steel plate thickness >=22mm steel plate
Divided edge structure, backing groove without carbon arc air gouging back chipping directly use submerged arc welding can obtain molding well and performance qualification
Weld seam, while solving the problems, such as to be also easy to produce slag inclusion when steel plate thickness >=22mm and welding deformation is big.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted in the utility model are as follows: groove knot of steel plate welding
The thickness of structure, including the first steel plate, the second steel plate and welding layer, first steel plate and the second steel plate is identical, first steel
Axisymmetricly, the gap formed after first steel plate and the docking of the second steel plate is groove knot to the interface of plate and the second steel plate
Structure, the interior setting welding layer of the divided edge structure；
The divided edge structure includes the reverse side slope of the front groove of the V-arrangement set gradually from top to bottom, intermediate root and inverted V-shaped
Mouthful, the angle of the front groove is 60 °, and the depth of the front groove is the half of first steel plate thickness；
The both sides of the intermediate root are parallel to each other, and the intermediate root is 3mm, and the angle of the backing groove is 70 °, described
First steel plate and the second steel plate docking back root part gap are 0~2mm；
The welding layer includes the front submerged arc layer, bottoming layer and back side submerged arc layer set gradually from top to bottom,
The bottoming layer is by flux-cored wire track welding trolley CO2Automatic welding is welded.
Further, the flux-cored wire is the E501T-1 flux-cored wire of diameter 1.2mm.
Further, the welding material of the frontal arc layer and back side submerged arc layer is the H10Mn2 welding wire of diameter 5mm
With SJ101 solder flux.
Further, the bottoming layer and front submerged arc layer are arranged in the front groove.
Further, the back side submerged arc layer is arranged in the backing groove.
Further, the back side submerged arc layer includes first of the submerged arc layer set gradually on backing groove and
Two submerged arc layers.
The utility model has the beneficial effects that: the angle of the divided edge structure front groove of the utility model is 60 °, front
The depth of groove is the half of divided edge structure total depth, and fusion penetration is suitable for when making front groove weld, the root face of welding groove and
Influence of the size of gap to appearance of weld is very big, if root face is too big, fit-up gap is too small, positive CO2It is molten to weld backing run
Deep small, back chipping is not difficult to penetrate reverse side；If root face is too small, fit-up gap is too big, positive CO2It welds backing run and is easy burn-through, instead
Face needs back chipping that could weld, and for the control of the root face of the utility model in 3mm, root gap is 0~2mm so that backing groove without
It needs carbon plane that can directly obtain the weld seam for forming good and performance qualification with submerged arc welding, solves to steel plate thickness >=22mm
Welding efficiency is low when carrying out submerged welding process, artificial plane root, scarfing cinder is needed to be not easy, be also easy to produce weld seam slag inclusion, solidification cracking and weldering
Serious problem is deformed afterwards, this greatly improves welding efficiency, saves welding cost of labor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traditional two-sided Y type groove；
Fig. 2 is the divided edge structure schematic diagram that the steel plate of specific embodiment of the present invention welds；
Fig. 3 is the structural schematic diagram of the steel plate welder of specific embodiment of the present invention；
Label declaration:
1, the first steel plate；2, the second steel plate；3, divided edge structure；31, front groove；32, intermediate root；33, backing groove；4,
CO2Automatic welding welding tractor；5, welding gun；6, operation panel；7, wire-feed motor；8, track.
Specific embodiment
For technology contents, the objects and the effects that the utility model is described in detail, below in conjunction with embodiment and match
Attached drawing is closed to be explained.
The design of the utility model most critical is: the angle of the divided edge structure front groove of the utility model is 60 °, instead
The angle of face groove is 70 °, and in 3mm, root gap is 0~2mm for root face control, the divided edge structure make in welding reverse side without
It needs carbon plane back chipping directly to use submerged-arc welding, can get the weld seam for forming good and performance qualification.
It please refers to shown in Fig. 1, welding parameter welding can not be required according to technique during traditional 3 welding of divided edge structure,
Fillet in normal shear fusion penetration is caused to be not achieved the half of mother metal thickness (30mm), after the carbon arc air gouging back chipping of the back side, 33 angle of backing groove
About 30 ° are dwindled by 60 °, to be formed narrow and deep groove structure, this divided edge structure 3 can generate following bad result: weld seam
Forming coefficients are poor, and scarfing cinder is not easy, and are also easy to produce weld seam slag inclusion and solidification cracking defect, and post welding distortion is serious.
Referring to figure 2.~3, a kind of divided edge structure of steel plate welding, including the first steel plate 1, the second steel plate 2 and welding layer,
First steel plate 1 is identical with the thickness of the second steel plate 2, the interface of first steel plate 1 and the second steel plate 2 axisymmetricly,
Being formed after first steel plate 1 and the docking of the second steel plate 2 is divided edge structure 3, the setting welding in the divided edge structure 3
Layer；
The divided edge structure 3 includes the front groove 31, intermediate root 32 and inverted V-shaped of the V-arrangement set gradually from top to bottom
Backing groove 33, the angle of the front groove 31 are 60 °, and the depth of the front groove 31 is 1 thickness of the first steel plate
Half；
The depth of the intermediate root 32 is 3mm, and the angle of the backing groove 33 is 70 °, first steel plate 1 and second
It is 0~2mm that steel plate 2, which docks back root part gap,；
The welding layer includes the front submerged arc layer, bottoming layer and back side submerged arc layer set gradually from top to bottom,
The bottoming layer is by flux-cored wire track welding trolley CO2Automatic welding is welded.
The working principle of the utility model are as follows: dock the first steel plate 1 and the second steel plate 2, the interface of two steel plates is in axis
Symmetrically, the divided edge structure 3 formed after the docking of two steel plates, divided edge structure 3 include the front groove of the V-arrangement set gradually from top to bottom
31, the backing groove 33 of intermediate root 32 and inverted V-shaped, the interior welding setting welding layer of divided edge structure 3, welding layer includes just from top to bottom
The angle of face submerged arc layer, bottoming layer and back side submerged arc layer, front groove 31 is 60 °, and the angle of backing groove 33 is
70 °, the depth of front groove 31 is the half of 2 thickness of 1 thickness of the first steel plate or the second steel plate, and intermediate root 32 is 3mm, the first steel
Plate 1 and the second steel plate 2 docking back root part gap are 0~2mm.
As can be seen from the above description, the utility model has the beneficial effects that: the 3 front groove of divided edge structure of the utility model
31 angle is 60 °, and the depth of front groove 31 is the half of 3 total depth of divided edge structure, fusion penetration when making front 31 weld seam of groove
Be suitable for that the influence of the root face of welding groove and the size in gap to appearance of weld is very big, if root face is too big, fit-up gap too
It is small, positive CO2Weldering backing run fusion penetration is small, and back chipping is not difficult to penetrate reverse side；If root face is too small, fit-up gap is too big, positive CO2
It welds backing run and is easy burn-through, reverse side needs back chipping that could weld, and the root face of the utility model is controlled in 3mm, root gap 0
~2mm, so that backing groove 33 is dug without carbon can directly obtain the weld seam for forming good and performance qualification with submerged arc welding,
Welding efficiency is low when solving to steel plate thickness >=22mm progress submerged welding process, artificial plane root, scarfing cinder is needed to be not easy, be also easy to produce
Weld seam slag inclusion, solidification cracking and the serious problem of post welding distortion, this greatly improves welding efficiency, saves welding cost of labor.
Further, the bottoming layer is welded by flux-cored wire, and the flux-cored wire is diameter 1.2mm's
E501T-1 flux-cored wire.
Further, the H10Mn2 that the welding material of the front submerged arc layer and back side submerged arc layer is diameter 5mm is welded
Silk and SJ101 solder flux.
Further, the flux-cored wire track welding trolley CO2Automatic welding bottoming layer and the setting of front submerged arc layer
In the front groove 31.
Further, the back side submerged arc layer is arranged in the backing groove 33.
Further, the back side submerged arc layer includes first of the submerged arc layer set gradually on backing groove and
Two submerged arc layers.
The utility model also provides a kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, comprising the following steps:
Step 1 docks the first steel plate 1 and the second steel plate 2, using flux-cored wire track welding trolley CO2Automatic welding pair
Front groove 31 carries out backing welding, carries out submerged-arc welding filling capping again after the completion；
Step 2 overturns the first steel plate 1 and the second steel plate 2, and back side submerged arc welding, institute are carried out on backing groove 33
Stating back side submerged-arc welding successively includes first of submerged-arc welding and second submerged-arc welding, and first of the submerged-arc welding is full penetration weld,
The welding current of the second submerged-arc welding is 90~110A smaller than the welding current of first of submerged-arc welding.
As can be seen from the above description, the utility model has the beneficial effects that: the first medication of the front groove 31 of the utility model
Core welding wire track welding trolley CO2Automatic welding backing welding, then capping is filled with submerged-arc welding, it is dug without carbon when backing groove of weld 33
Submerged-arc welding is directly used, first of submerged-arc welding is the bottoming welding line that full penetration weld is used to melt front groove 31, and second buries
Arc-welding is amendment weld seam, adjusts the mechanical performance of first of the submerged-arc welding seam of backing groove 33, the wherein weldering of second submerged-arc welding
Connecing electric current can only be 90~110A smaller than the welding current of first of submerged-arc welding, and it is good to can get molding using the method for the utility model
Good and performance qualification weld seam, postwelding carry out appearance detection to weld seam, and range estimation is qualified, and magnetic powder and radiographic inspection detection are qualified, weldering
Seam macroscopic view detection is qualified, and welding point tensile strength, cold-bending property, impact property, Vickers hardness number all meet code requirement, together
When solve the problems, such as to be also easy to produce the weld defects such as slag inclusion and welding deformation is big, this greatly improves welding efficiency, saves welding and people
Work cost.
Further, in step 1, the flux-cored wire is the E501T-1 flux-cored wire of diameter 1.2mm.
Further, in step 1, the welding current of the backing welding is 200~250A, and arc voltage is 26~30V,
Speed of welding is 27~35cm/min, CO2Throughput is 20L/min；
It is described front submerged-arc welding welding current be 700~750A, arc voltage be 30~34V, speed of welding be 32~
36cm/min。
Further, in step 2, the welding current of first of the submerged-arc welding is 800~850A, arc voltage 32
~36V, speed of welding are 32~36cm/min；
The welding current of the second submerged-arc welding is 700~750A, and arc voltage is 32~34V, speed of welding 32
~36cm/min.
Further, in step 1, using CO2Automatic welding carriage carries out backing welding.
The welding equipment that the utility model embodiment uses is CO of the track 8 with 5 oscillating function of welding gun2Automatic welding is small
Vehicle, CO2Welding machine (model NBC-350), submerged arc welding machine (model MZ-1250)；Welding material H10Mn2 welding wire (Φ 5mm),
SJ101 solder flux, E501T-1 flux-cored wire (Φ 1.2mm), CO2Gas.
CO2The welder mode of operation of automatic welding welding tractor 4 are as follows: install welding gun 5 on welding tractor before weldering, adjust
Good track is at a distance from groove, so that the profiling arm of trolley always above groove, is then fixed on track 8, rail by welding gun 5
Road 8 is fixed on the steel plate again.Speed of welding, amplitude of fluctuation, swing speed, left and right are adjusted by trolley operation panel 6 when welding
Residence time adjusts welding current and weldingvoltage in wire-feed motor 7, adjusts these parameters according to groove situation to be expired
The backing weld seam that sufficient technique requires.
Embodiment 1
A kind of divided edge structure of steel plate welding, including the first steel plate 1, the second steel plate 2 and welding layer, steel plate are DH36 steel
The plate thickness of plate, the first steel plate 1 and the second steel plate 2 is 30mm, and the depth of front groove 31 is 15mm, and intermediate 32 depth of root is
3mm, 0~2mm of root gap.The interface of first steel plate 1 and the second steel plate 2 axisymmetricly, first steel plate 1 and
Divided edge structure 3 is formed after the docking of two steel plates 2, the setting welding layer in the divided edge structure 3；
The divided edge structure 3 includes the front groove 31, intermediate root 32 and inverted V-shaped of the V-arrangement set gradually from top to bottom
Backing groove 33, the angle of the front groove 31 are 60 °, and the depth of the front groove 31 is 1 thickness of the first steel plate
Half；
The intermediate root 32 is 3mm, and the angle of the backing groove 33 is 70 °, first steel plate 1 and the second steel plate 2
Docking back root part gap is 0~2mm；
The welding layer includes the front submerged arc layer, bottoming layer and back side submerged arc layer set gradually from top to bottom.
A kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, comprising the following steps:
Step 1 docks the first steel plate 1 and the second steel plate 2, using flux-cored wire track welding trolley CO2Automatic welding pair
Front groove 31 carries out backing welding, carries out submerged-arc welding filling capping again after the completion；The flux-cored wire is diameter 1.2mm's
E501T-1 flux-cored wire；
The flux-cored wire track welding trolley CO2The welding current of automatic welding backing welding is 200A, and arc voltage is
26V, speed of welding 27cm/min, CO2Throughput is 20L/min；
The welding current of the front submerged-arc welding is 700A, arc voltage 30V, speed of welding 32cm/min；
Step 2, backing groove 33 successively carry out first of submerged-arc welding and without carbon arc air gouging on backing groove 33
Two submerged arc weldings, first of the submerged-arc welding are full penetration weld, and the welding current of the second submerged-arc welding is than first
The small 100A of the welding current of road submerged-arc welding；
The welding current of first of the submerged-arc welding is 800A, arc voltage 32V, speed of welding 32cm/min.Institute
The welding current for stating second submerged-arc welding is 700A, arc voltage 32V, speed of welding 32cm/min；
The H10Mn2 welding wire and SJ101 solder flux that the welding material of the front submerged-arc welding and back side submerged-arc welding is diameter 5mm.
Embodiment 2
A kind of divided edge structure of steel plate welding, including the first steel plate 1, the second steel plate 2 and welding layer, steel plate are DH36 steel
The plate thickness of plate, the first steel plate 1 and the second steel plate 2 is 30mm, and the depth of front groove 31 is 15mm, and intermediate 32 depth of root is
3mm, 0~2mm of root gap.First steel plate 1 and the docking of the second steel plate 2 form divided edge structure 3, and the divided edge structure 3 is in
Two-sided Y type, the divided edge structure 3 include the front groove 31 set gradually from top to bottom, intermediate root 32 and backing groove 33, institute
The angle for stating front groove 31 is 60 °, and the depth of the front groove 31 is the half of 3 total depth of divided edge structure, described
Intermediate root 32 is 3mm, and the angle of the backing groove 33 is 70 °, between first steel plate 1 and the second steel plate 2 docking back root part
Gap is 0~2mm；The welding layer includes front submerged arc layer, bottoming layer and the back side submerged-arc welding set gradually from top to bottom
Layer.
A kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, comprising the following steps:
Step 1 docks the first steel plate 1 and the second steel plate 2, using flux-cored wire track welding trolley CO2Automatic welding pair
Front groove 31 carries out backing welding, carries out submerged-arc welding filling capping again after the completion；The flux-cored wire is diameter 1.2mm's
E501T-1 flux-cored wire；
The flux-cored wire track welding trolley CO2The welding current of automatic welding backing welding is 230A, and arc voltage is
28V, speed of welding 30cm/min, CO2Throughput is 20L/min；
The welding current of the front submerged-arc welding is 730A, arc voltage 32V, speed of welding 34cm/min.
Step 2, backing groove 33 successively carry out back side submerged arc welding without carbon arc air gouging on backing groove 33,
First of the submerged-arc welding in the back side is full penetration weld, the weldering of the welding current of the second submerged-arc welding than first of submerged-arc welding
Meet the small 110A of electric current；
The welding current of first of the submerged-arc welding in the back side is 820A, arc voltage 34V, speed of welding 34cm/
min.The welding current of the second submerged-arc welding is 710A, arc voltage 33V, speed of welding 34cm/min；
The H10Mn2 welding wire and SJ101 solder flux that the welding material of the front submerged-arc welding and back side submerged-arc welding is diameter 5mm.
Embodiment 3
A kind of divided edge structure of steel plate welding, including the first steel plate 1, the second steel plate 2 and welding layer, steel plate are DH36 steel
The plate thickness of plate, the first steel plate 1 and the second steel plate 2 is 30mm, and the depth of front groove 31 is 15mm, and intermediate 32 depth of root is
3mm, 0~2mm of root gap.The interface of first steel plate 1 and the second steel plate 2 axisymmetricly, first steel plate 1 and
Divided edge structure 3 is formed after the docking of two steel plates 2, the setting welding layer in the divided edge structure 3；
The divided edge structure 3 includes the front groove 31, intermediate root 32 and inverted V-shaped of the V-arrangement set gradually from top to bottom
Backing groove 33, the angle of the front groove 31 are 60 °, and the depth of the front groove 31 is 1 thickness of the first steel plate
Half；
The intermediate root 32 is 3mm, and the angle of the backing groove 33 is 70 °, first steel plate 1 and the second steel plate 2
Docking back root part gap is 0~2mm；
The welding layer includes the front submerged arc layer, bottoming layer and back side submerged arc layer set gradually from top to bottom.
A kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, comprising the following steps:
Step 1 docks the first steel plate 1 and the second steel plate 2, using flux-cored wire track welding trolley CO2Automatic welding pair
Front groove 31 carries out backing welding, is carrying out submerged-arc welding filling capping after the completion；The flux-cored wire is diameter 1.2mm's
E501T-1 flux-cored wire；
The flux-cored wire track welding trolley CO2The welding current of automatic welding backing welding is 250A, and arc voltage is
30V, speed of welding 35cm/min, CO2Throughput is 20L/min；
The welding current of the front submerged-arc welding is 750A, arc voltage 34V, speed of welding 36cm/min；
Step 2, backing groove 33 are without carbon arc air gouging, successively first of submerged-arc welding and second on backing groove 33
Submerged arc welding, first of the submerged-arc welding are full penetration weld, and the welding current of the second submerged-arc welding is buried than first
The small 100A of the welding current of arc-welding；
The welding current of first of the submerged-arc welding is 850A, arc voltage 36V, speed of welding 36cm/min.Institute
The welding current for stating second submerged-arc welding is 750A, arc voltage 34V, speed of welding 36cm/min；
The H10Mn2 welding wire and SJ101 solder flux that the welding material of the front submerged-arc welding and back side submerged-arc welding is diameter 5mm.
Embodiment 4
A kind of divided edge structure of steel plate welding, including the first steel plate 1, the second steel plate 2 and welding layer, steel plate are DH36 steel
Plate, two steel plate thickness 30mm.The interface of first steel plate 1 and the second steel plate 2 axisymmetricly, first steel plate 1 and
The gap formed after the docking of two steel plates 2 is divided edge structure 3, the setting welding layer in the divided edge structure 3；
The divided edge structure 3 includes the front groove 31, intermediate root 32 and inverted V-shaped of the V-arrangement set gradually from top to bottom
Backing groove 33, the angle of the front groove 31 are 60 °, and the depth of the front groove 31 is 1 thickness of the first steel plate
Half；
The intermediate root 32 is 3mm, and the angle of the backing groove 33 is 70 °, first steel plate 1 and the second steel plate 2
Docking back root part gap is 0~2mm；
The welding layer includes that submerged arc layer, bottoming layer and back side submerged-arc welding are exempted from the front set gradually from top to bottom
Layer.
A kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, comprising the following steps:
Step 1 docks the first steel plate 1 and the second steel plate 2, using flux-cored wire track welding trolley CO2Automatic welding pair
Front groove 31 carries out backing welding, carries out submerged-arc welding filling capping again after the completion；The flux-cored wire is diameter 1.2mm's
E501T-1 flux-cored wire；
The flux-cored wire track welding trolley CO2The welding current of automatic welding backing welding is 200~250A, arc voltage
For 26~30V, speed of welding is 27~35cm/min, CO2Throughput is 20L/min；
It is described front submerged-arc welding welding current be 700~750A, arc voltage be 30~34V, speed of welding be 32~
36cm/min；
Step 2, backing groove 33 successively carry out back side submerged arc welding without carbon arc air gouging on backing groove 33,
First of the submerged-arc welding is full penetration weld, and the welding current of the second submerged-arc welding is more electric than the welding of first of submerged-arc welding
Flow small 50A；
The welding current of first of the submerged-arc welding in the back side be 800A, arc voltage be 32~36V, speed of welding be 32~
36cm/min.The welding current of the second submerged-arc welding be 750A, arc voltage be 32~34V, speed of welding be 32~
36cm/min；
The H10Mn2 welding wire and SJ101 solder flux that the welding material of the front submerged-arc welding and back side submerged-arc welding is diameter 5mm.
Steel plate after Examples 1 to 4 welding is detected, then the technique is advised according to U.S.'s AWS welding for steel structure
Model is evaluated, and carries out soldering test, weld inspection and performance detection under ABS marine surveyor's witness.Postwelding carries out weld seam
Appearance detection, range estimation is qualified, and magnetic powder and radiographic inspection detection are qualified, and the detection of weld seam macroscopic view is qualified.It is welding point tensile strength, cold
Curved performance, impact property, Vickers hardness number all meet code requirement.In conclusion a kind of steel plate weldering provided by the utility model
The divided edge structure connect, divided edge structure are in two-sided Y type, and the angle of front groove is 60 °, and the depth of front groove is that divided edge structure is total
The half of depth, making fusion penetration when the groove weld of front is suitable for that the root face of welding groove and the size in gap are to appearance of weld
Influence it is very big, if root face is too big, fit-up gap is too small, positive CO2Weldering bottoming layer fusion penetration is small, and back chipping is not difficult to weld reverse side
Thoroughly；If root face is too small, fit-up gap is too big, positive CO2It welding bottoming layer and is easy burn-through, reverse side needs back chipping that could weld, this
In 3mm, root gap is 0~2mm for the root face control of utility model, so that backing groove directly uses submerged arc welding without carbon plane
The weld seam for forming good and performance qualification can be obtained, welding when carrying out submerged welding process to steel plate thickness >=22mm is solved and imitates
Rate is low, needs artificial plane root, the problem that scarfing cinder is not easy, easy weld seam slag inclusion, solidification cracking and post welding distortion are serious, this is greatly improved
Welding efficiency saves welding and cost of labor.
The utility model also provides a kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, and front groove first uses medicine core
Welding wire track welding trolley CO2Automatic welding backing welding, then capping is filled with submerged-arc welding, it is direct without carbon plane when backing groove of weld
With submerged-arc welding, first of the submerged-arc welding in the back side is the bottoming welding line that full penetration weld is used to melt front groove, second submerged arc
Weldering is amendment weld seam, adjusts the mechanical performance of first of submerged-arc welding seam of backing groove, the welding electricity of wherein second submerged-arc welding
Stream can only be 90~110A smaller than the welding current of first of submerged-arc welding, using the utility model method can get molding well and
The weld seam of performance qualification, postwelding carry out appearance detection to weld seam, and range estimation is qualified, and magnetic powder and radiographic inspection detection are qualified, and weld seam is macro
It is qualified to see detection, welding point tensile strength, cold-bending property, impact property, Vickers hardness number all meet code requirement, solve simultaneously
Certainly be also easy to produce the weld defects such as slag inclusion and the big problem of welding deformation, this greatly improves welding efficiency, save welding and manually at
This.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technology neck
Domain is also included in the patent protection scope of the utility model.
Claims (6)
1. a kind of divided edge structure of steel plate welding, which is characterized in that including the first steel plate, the second steel plate and welding layer, described the
The thickness of one steel plate and the second steel plate is identical, the interface of first steel plate and the second steel plate axisymmetricly, first steel
The gap formed after plate and the docking of the second steel plate is divided edge structure, the setting welding layer in the divided edge structure；
The divided edge structure includes the backing groove of the front groove of the V-arrangement set gradually from top to bottom, intermediate root and inverted V-shaped,
The angle of the front groove is 60 °, and the depth of the front groove is the half of first steel plate thickness；
The depth of the intermediate root is 3mm, and the angle of the backing groove is 70 °, first steel plate and the docking of the second steel plate
Back root part gap is 0~2mm；
The welding layer includes the front submerged arc layer, bottoming layer and back side submerged arc layer set gradually from top to bottom, described
Bottoming layer is by flux-cored wire track welding trolley CO2Automatic welding is welded.
2. the divided edge structure of steel plate welding according to claim 1, which is characterized in that the flux-cored wire is diameter
The E501T-1 flux-cored wire of 1.2mm.
3. the divided edge structure of steel plate welding according to claim 1, which is characterized in that the front submerged arc layer and the back side
The welding material of submerged arc layer is the H10Mn2 welding wire and SJ101 solder flux of diameter 5mm.
4. the divided edge structure of steel plate welding according to claim 1, which is characterized in that the bottoming layer and front submerged arc
Layer is arranged in the front groove.
5. the divided edge structure of steel plate welding according to claim 1, which is characterized in that the back side submerged arc layer setting exists
In the backing groove.
6. the divided edge structure of steel plate welding according to claim 1, which is characterized in that the back side submerged arc layer is included in
First of the submerged arc layer and second submerged arc layer set gradually on backing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821099788.6U CN208945411U (en) | 2018-07-12 | 2018-07-12 | A kind of divided edge structure of steel plate welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821099788.6U CN208945411U (en) | 2018-07-12 | 2018-07-12 | A kind of divided edge structure of steel plate welding |
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