CN108788507A - A kind of divided edge structure and welding procedure of steel plate welding - Google Patents
A kind of divided edge structure and welding procedure of steel plate welding Download PDFInfo
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- CN108788507A CN108788507A CN201810761338.7A CN201810761338A CN108788507A CN 108788507 A CN108788507 A CN 108788507A CN 201810761338 A CN201810761338 A CN 201810761338A CN 108788507 A CN108788507 A CN 108788507A
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- 238000003466 welding Methods 0.000 title claims abstract description 379
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 157
- 239000010959 steel Substances 0.000 title claims abstract description 157
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000003032 molecular docking Methods 0.000 claims abstract description 11
- 230000035515 penetration Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 7
- 230000004907 flux Effects 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052799 carbon Inorganic materials 0.000 abstract description 16
- 238000011009 performance qualification Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 12
- 239000002893 slag Substances 0.000 description 9
- 230000004927 fusion Effects 0.000 description 8
- 239000003818 cinder Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 238000007689 inspection Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 239000006247 magnetic powder Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
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- 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
-
- 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
- B23K9/18—Submerged-arc welding
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Abstract
The present invention relates to steel plate welding technology fields, and in particular to a kind of divided edge structure and welding procedure of steel plate welding.Divided edge structure is in two-sided Y types, 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 present invention makes backing groove be not necessarily to carbon plane and directly use submerged-arc welding seam in welding, and the wherein welding current of second submerged-arc welding can only be smaller 90~110A than the welding current of first of submerged-arc welding, can get the weld seam for being molded good and performance qualification.
Description
Technical field
The present invention relates to steel plate welding technology fields, and in particular to a kind of divided edge structure and welding procedure of steel plate welding.
Background technology
Submerged-arc welding is a kind of welding method being commonly used during ship jigsaw.Usually to plate thickness >=22mm steel plates into
Two-sided Y types 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
According to technological requirement welding parameter welding, cause 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 will produce 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.
Invention content
The technical problem to be solved by the present invention is to：A kind of slope that the steel plate suitable for steel plate thickness >=22mm welds is provided
Mouth structure and welding procedure, backing groove can directly be obtained with submerged arc welding without carbon arc air gouging back chipping and be molded good and property
Weld seam that can be qualified, 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, the technical solution adopted by the present invention is：A kind of divided edge structure of steel plate welding, packet
Include the first steel plate, the second steel plate and welding layer, the thickness of first steel plate and the second steel plate is identical, first steel plate and
Axisymmetricly, the gap formed after first steel plate and the docking of the second steel plate is divided edge structure to the interface of two steel plates, described
The setting welding layer in 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 mutually parallel, 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.
The beneficial effects of the present invention are：The angle of the divided edge structure front groove of the present invention is 60 °, the depth of front groove
Degree is the half of divided edge structure total depth, and fusion penetration is suitable when making front groove weld, the root face of welding groove and the size in gap
Influence of the size to appearance of weld is very big, if root face is too big, fit-up gap is too small, positive CO2It is small to weld backing run fusion penetration, reverse side
Back chipping is not difficult through welding；If root face is too small, fit-up gap is too big, positive CO2It welds backing run and is easy burn-through, reverse side needs back chipping
It could weld, in 3mm, root gap is 0~2mm for root face of the invention control so that backing groove is without carbon plane directly with burying
Arc welding can obtain the weld seam for being molded good and performance qualification, solve and carry out submerged welding process to steel plate thickness >=22mm
When welding efficiency is low, artificial plane root, scarfing cinder is needed to be not easy, be also easy to produce weld seam slag inclusion, solidification cracking and post welding distortion is serious asks
Topic, this greatly improves welding efficiency, saves welding cost of labor.
The present invention also provides a kind of welding procedures of the divided edge structure of above-mentioned steel plate welding, include the following steps：
Step 1 docks the first steel plate and the second steel plate, using flux-cored wire track welding trolley CO2Automatic welding is to just
Face groove carries out backing welding, carries out positive submerged-arc welding filling capping again after the completion；
Step 2 overturns the first steel plate and the second steel plate, carries out first of submerged-arc welding, second successively on backing groove
Road submerged arc welding, first of the submerged-arc welding are full penetration weld, and the welding current of the second submerged-arc welding is than first
Small 90~the 110A of welding current of submerged-arc welding.
The beneficial effects of the present invention are：First use flux-cored wire track welding trolley CO in the front of the present invention2Automatic welding is beaten
Back welding, then fill capping with submerged-arc welding；Reverse side is dug without carbon directly uses submerged-arc welding, first of submerged-arc welding to be used for for full penetration weld
Positive bottoming welding line is melted, second submerged-arc welding is to correct weld seam, adjusts the machine of first of submerged-arc welding seam of backing groove
Tool performance, the wherein welding current of second submerged-arc welding can only be smaller 90~110A than the welding current of first of submerged-arc welding, use
The present invention method can get molding well and performance qualification weld seam, postwelding to weld seam carry out appearance detection qualification, magnetic powder with
Radiographic inspection detection is qualified, and the detection of weld seam macroscopic view is qualified, welding point tensile strength, cold-bending property, impact property, Vickers hardness
Value all meets code requirement, while solving 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 weldering
Efficiency is connect, welding and cost of labor are saved.
Description of the drawings
Fig. 1 is the structural schematic diagram of traditional two-sided Y types groove；
Fig. 2 is the divided edge structure schematic diagram that the steel plate of the specific embodiment of the invention welds；
Fig. 3 is the structural schematic diagram of the steel plate welder of the specific embodiment of the 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 implementation mode
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is:The angle of the divided edge structure front groove of the present invention is 60 °, backing groove
Angle is 70 °, and in 3mm, root gap is 0~2mm for root face control, which makes that reverse side is clear without carbon plane in welding
Root directly uses submerged-arc welding, can get the weld seam for being molded good and performance qualification.
Please refer to shown in Fig. 1, during traditional 3 welding of divided edge structure can not according to technological requirement welding parameter welding,
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 will produce following bad result：Weld seam
Forming coefficients are poor, and scarfing cinder is not easy, and easy weld seam slag inclusion and solidification cracking defect, post welding distortion are serious.
Fig. 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 are please referred to,
First steel plate 1 is identical with the thickness of the second steel plate 2, the interface of first steel plate, 1 and second steel plate 2 axisymmetricly,
It is divided edge structure 3 to be formed after the docking of first steel plate, 1 and second steel plate 2, 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
The angle of backing groove 33, the front groove 31 is 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 operation principle of the present invention is that：First steel plate 1 and the second steel plate 2 are docked, the interface of two steel plates axisymmetricly,
The divided edge structure 3 that is formed after the docking of two steel plates, divided edge structure 3 include the V-arrangement set gradually from top to bottom front groove 31, in
Between root 32 and inverted V-shaped backing groove 33, welding setting welding layer, welding layer are buried including front from top to bottom in divided edge structure 3
The angle of arc-welding layer, bottoming layer and back side submerged arc layer, front groove 31 is 60 °, and the angle of backing groove 33 is 70 °, just
The depth of face 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, 1 He of the first steel plate
It is 0~2mm that second steel plate 2, which docks back root part gap,.
As can be seen from the above description, the beneficial effects of the present invention are：The angle of the 3 front groove 31 of divided edge structure of the present invention
It it is 60 °, the depth of front groove 31 is the half of 3 total depth of divided edge structure, and fusion penetration is suitable when making front 31 weld seam of groove, welding
The influence of the root face of groove and the size in gap to appearance of weld is very big, if root face is too big, fit-up gap is too small, front
CO2It is small to weld backing run fusion penetration, back chipping is not difficult through welding to reverse side；If root face is too small, fit-up gap is too big, positive CO2Weld backing welding
Road is easy burn-through, and reverse side needs back chipping that could weld, and in 3mm, root gap is 0~2mm so that anti-for root face of the invention control
Face groove 33 is dug without carbon can directly obtain the weld seam for being molded good and performance qualification with submerged arc welding, solve to steel plate
Welding efficiency is low when thickness >=22mm carries out submerged welding process, artificial plane root, scarfing cinder is needed to be not easy, be also easy to produce weld seam slag inclusion, be solidifying
Gu crackle 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 wires.
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 present invention also provides a kind of welding procedures of the divided edge structure of above-mentioned steel plate welding, include 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
It includes first of submerged-arc welding and second submerged-arc welding to state back side submerged-arc welding successively, and first of the submerged-arc welding is full penetration weld,
The welding current of the second submerged-arc welding is smaller 90~110A than the welding current of first of submerged-arc welding.
As can be seen from the above description, the beneficial effects of the present invention are：The front groove 31 of the present invention first uses flux-cored wire rail
Road welding tractor CO2Automatic welding backing welding, then capping is filled with submerged-arc welding, without carbon plane directly with burying when backing groove of weld 33
Arc-welding, first of submerged-arc welding are the bottoming welding line that full penetration weld is used to melt front groove 31, and second submerged-arc welding is to repair
Positive weld seam adjusts the mechanical performance of first of the submerged-arc welding seam of backing groove 33, the wherein welding current of second submerged-arc welding only
Can be smaller 90~110A than the welding current of first of submerged-arc welding, method using the present invention can get molding well and performance is qualified
Weld seam, postwelding carries out appearance detection to weld seam, and range estimation is qualified, and magnetic powder and radiographic inspection detection are qualified, and the detection of weld seam macroscopic view is closed
Lattice, welding point tensile strength, cold-bending property, impact property, Vickers hardness number all meet code requirement, while solving to be also easy to produce
The weld defects such as slag inclusion and the big problem of welding deformation, this greatly improves welding efficiency, saves welding and cost of labor.
Further, in step 1, the flux-cored wire is the E501T-1 flux-cored wires 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 embodiment of the present invention uses is CO of the track 8 with 5 oscillating function of welding gun2Automatic welding carriage, CO2
Welding machine (model NBC-350), submerged arc welding machine (model MZ-1250)；Welding material H10Mn2 welding wires (Φ 5mm), SJ101 welderings
Agent, E501T-1 flux-cored wires (Φ 1.2mm), CO2Gas.
CO2The welder mode of operation of automatic welding welding tractor 4 is：Welding gun 5 is installed on welding tractor before weldering, is adjusted
Good track is at a distance from groove so that the profiling arm of trolley above groove, is then fixed on track 8, rail by welding gun 5 always
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, these parameters is adjusted to be expired according to groove situation
The backing weld seam of sufficient technological requirement.
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 32 depth of intermediate root is
3mm, 0~2mm of root gap.The interface of first steel plate, 1 and second steel plate 2 axisymmetricly, first steel plate 1 and
Divided edge structure 3 is formed after the docking of two steel plates 2, and the welding layer is set 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
The angle of backing groove 33, the front groove 31 is 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 second steel plate 2
It is 0~2mm to dock 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.
A kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, includes 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 wires；
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 carry out first of submerged-arc welding and successively 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 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 wires 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 32 depth of intermediate root is
3mm, 0~2mm of root gap.The docking of first steel plate, 1 and second steel plate 2 forms divided edge structure 3, and the divided edge structure 3 is in
Two-sided Y types, 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 the divided edge structure, described
Intermediate root 32 is 3mm, and the angle of the backing groove 33 is 70 °, and first steel plate, 1 and second steel plate 2 docks between 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, includes 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 wires；
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 carry out back side submerged arc welding successively 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 wires 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 32 depth of intermediate root is
3mm, 0~2mm of root gap.The interface of first steel plate, 1 and second steel plate 2 axisymmetricly, first steel plate 1 and
Divided edge structure 3 is formed after the docking of two steel plates 2, and the welding layer is set 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
The angle of backing groove 33, the front groove 31 is 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 second steel plate 2
It is 0~2mm to dock 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.
A kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, includes 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 wires；
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, first of submerged-arc welding and second successively 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 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 wires 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 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, and the welding layer is arranged 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
The angle of backing groove 33, the front groove 31 is 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 second steel plate 2
It is 0~2mm to dock back root part gap；
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, includes 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 wires；
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 carry out back side submerged arc welding successively 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 wires 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 being welded to Examples 1 to 4 is detected, and is then advised according to U.S.'s AWS welding for steel structure to the technique
Model is evaluated, and carries out soldering test, weld inspection and performance detection in the case where ABS marine surveyor witnesses.Postwelding carries out weld seam
Appearance detects, and 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 welding provided by the invention
Divided edge structure, divided edge structure are in two-sided Y types, and the angle of front groove is 60 °, and the depth of front groove is divided edge structure total depth
Half, fusion penetration is suitable when making front groove weld, the shadow of the root face of welding groove and the size in gap to appearance of weld
Sound is very big, if root face is too big, fit-up gap is too small, positive CO2It is small to weld bottoming layer fusion penetration, back chipping is not difficult through welding to reverse side；If
Root face is too small, fit-up gap is too big, positive CO2It welds bottoming layer and is easy burn-through, reverse side needs back chipping that could weld, of the invention
In 3mm, root gap is 0~2mm for root face control so that backing groove can directly be obtained into submerged arc welding without carbon plane
Type well and the weld seam of performance qualification, solves that welding efficiency when to steel plate thickness >=22mm progress submerged welding process 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 greatly improves welding efficiency,
Save welding and cost of labor.
The present invention also provides a kind of welding procedure of the divided edge structure of above-mentioned steel plate welding, front groove first uses flux-cored wire
Track welding trolley CO2Automatic welding backing welding, then capping is filled with submerged-arc welding, without carbon plane directly with burying when backing groove of weld
Arc-welding, first of the submerged-arc welding in the back side are the bottoming welding line that full penetration weld is used to melt front groove, and second submerged-arc welding is
Weld seam is corrected, adjusts the mechanical performance of first of submerged-arc welding seam of backing groove, the wherein welding current of second submerged-arc welding only
Can be smaller 90~110A than the welding current of first of submerged-arc welding, method using the present invention can get molding well and performance is qualified
Weld seam, postwelding carries out appearance detection to weld seam, and range estimation is qualified, and magnetic powder and radiographic inspection detection are qualified, and the detection of weld seam macroscopic view is closed
Lattice, welding point tensile strength, cold-bending property, impact property, Vickers hardness number all meet code requirement, while solving to be also easy to produce
The weld defects such as slag inclusion and the big problem of welding deformation, this greatly improves welding efficiency, saves welding and cost of labor.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, include similarly
In the scope of patent protection of the present invention.
Claims (10)
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, and the welding layer is arranged 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 wires of 1.2mm.
3. the divided edge structure of steel plate welding according to claim 1, which is characterized in that the frontal arc layer and the back side are buried
The welding material of arc-welding 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.
7. a kind of welding procedure of the divided edge structure of steel plate welding according to claims 1 to 6, which is characterized in that including
Following steps：
Step 1 docks the first steel plate and the second steel plate, using flux-cored wire track welding trolley CO2Automatic welding is to front groove
Backing welding is carried out, carries out positive submerged-arc welding filling capping again after the completion；
Step 2 overturns the first steel plate and the second steel plate, back side submerged arc welding is carried out on backing groove, the back side is buried
Arc-welding successively include first of submerged-arc welding and second submerged-arc welding, first of the submerged-arc welding be full penetration weld, described second
The welding current of road submerged-arc welding is smaller 90~110A than the welding current of first of submerged-arc welding.
8. the welding procedure of the divided edge structure of steel plate welding according to claim 7, which is characterized in that in step 1, institute
State the E501T-1 flux-cored wires that flux-cored wire is diameter 1.2mm.
9. the welding procedure of the divided edge structure of steel plate welding according to claim 7, which is characterized in that in step 1, institute
The welding current for stating backing welding is 200~250A, and arc voltage is 26~30V, and speed of welding is 27~35cm/min, CO2Gas
Flow is 20L/min；
The welding current of the front submerged-arc welding is 700~750A, and arc voltage is 30~34V, and speed of welding is 32~36cm/
min。
10. the welding procedure of the divided edge structure of steel plate welding according to claim 7, which is characterized in that in step 2,
The welding current of first of the submerged-arc welding is 800~850A, and arc voltage is 32~36V, and speed of welding is 32~36cm/
min；
The welding current of the second submerged-arc welding be 700~750A, arc voltage be 32~34V, speed of welding be 32~
36cm/min。
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| CN109746552A (en) * | 2019-03-28 | 2019-05-14 | 招商局重工（江苏）有限公司 | A kind of super large ore ship main deck closes up welding procedure |
| CN110193674A (en) * | 2019-05-31 | 2019-09-03 | 中国电子科技集团公司第三十九研究所 | Large-scale wheel-track type antenna pedestal orientation track high hardness material outfield precision welding process |
| CN110508954A (en) * | 2019-08-16 | 2019-11-29 | 江苏海力风电设备科技股份有限公司 | A kind of wind power foundation thin plate submerged-arc welding process |
| CN111545877A (en) * | 2020-05-18 | 2020-08-18 | 江苏联峰实业有限公司 | Welding method of carbon structural steel |
| CN111992860A (en) * | 2020-08-26 | 2020-11-27 | 广船国际有限公司 | Flux-cored wire deposited metal test method |
| CN111992860B (en) * | 2020-08-26 | 2022-08-02 | 广船国际有限公司 | Flux-cored wire deposited metal test method |
| CN112475749A (en) * | 2020-12-14 | 2021-03-12 | 湖南联诚轨道装备有限公司 | Welding processing method for traction beam of railway vehicle |
| CN112475749B (en) * | 2020-12-14 | 2022-07-05 | 湖南联诚轨道装备有限公司 | Welding processing method for traction beam of railway vehicle |
| CN112935538A (en) * | 2021-01-25 | 2021-06-11 | 广西建工集团第一安装有限公司 | Efficient welding method for spliced thick plate |
| CN112719531A (en) * | 2021-01-27 | 2021-04-30 | 中国水电四局（兰州）机械装备有限公司 | Assembly welding method of magnetic high-strength alloy steel plate |
| CN113996894A (en) * | 2021-09-24 | 2022-02-01 | 中船澄西船舶修造有限公司 | Submerged-arc welding process adopting gas shield welding power supply filament |
| CN113894393A (en) * | 2021-09-30 | 2022-01-07 | 广州黄船海洋工程有限公司 | Welding process of FH36 high-strength steel ultra-thick plate |
| CN114799429B (en) * | 2022-04-15 | 2023-09-12 | 江南造船(集团)有限责任公司 | Automatic submerged arc welding method for Gao Rongfu rate of high-strength steel thick plate |
| CN114799429A (en) * | 2022-04-15 | 2022-07-29 | 江南造船(集团)有限责任公司 | High-deposition-rate submerged arc automatic welding method for high-strength steel thick plate |
| CN114682886A (en) * | 2022-04-28 | 2022-07-01 | 河南鼎力杆塔股份有限公司 | Welding method for angle iron tower steel cladding |
| CN114682886B (en) * | 2022-04-28 | 2024-03-19 | 河南鼎力杆塔股份有限公司 | Welding method for angle iron tower steel |
| CN117506082A (en) * | 2024-01-04 | 2024-02-06 | 南通泰胜蓝岛海洋工程有限公司 | Short-flow welding manufacturing method for low-alloy high-strength steel high-restraint high-bearing welding structure |
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