CN108296603A - The two-sided double arc vertical position welding fusion penetration control devices of one kind and its welding method - Google Patents
The two-sided double arc vertical position welding fusion penetration control devices of one kind and its welding method Download PDFInfo
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- CN108296603A CN108296603A CN201710022690.4A CN201710022690A CN108296603A CN 108296603 A CN108296603 A CN 108296603A CN 201710022690 A CN201710022690 A CN 201710022690A CN 108296603 A CN108296603 A CN 108296603A
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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
- B23K9/095—Monitoring or automatic control of welding parameters
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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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
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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
- B23K9/235—Preliminary treatment
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Abstract
Include dual robot, the source of welding current, arc length control device and industrial personal computer etc. the invention discloses a kind of two-sided double arc vertical position welding fusion penetration control devices of composite plate and method, the device.Its fusion penetration control method is mainly combined using two-sided double arc vertical position weldings with the arc length control device voluntarily developed, both sides arc parameters are separately adjustable in welding process, and voltage data is acquired and adjusted by arc length control device, realize accurately controlling for composite plate positive and negative fusion penetration.By the above-mentioned means, the present invention can realize the disposable through welding to composite plates such as 5 10mm titanium steels, stainless steel steel, without adding transition zone, efficiency improves, and welding deformation is small, and reduces the generation of intermetallic compound.
Description
Technical field
The present invention relates to a kind of composite board welding method, especially a kind of two-sided double arc vertical position welding fusion penetration control devices and its weldering
Connect method.
Background technology
Stainless steel clad plate is not since base's carbon steel or copper contain alloying elements cr, Ni, so to weld seam gold when fusion welding
Alloying elements cr, Ni have diluting effect in category so that austenite former Cr, Ni contents are reduced in weld seam, in weld metal
Martensite hardened structure is generated, crackle is also easy to produce, to deteriorate quality of weld joint.Therefore the weldering for stainless steel clad plate
It connects, the welding material that on the one hand select the content containing Cr, Ni high, on the other hand also to select suitable welding method and Welder
Skill.
When the direct melting welding of titanium steel composite board, since the linear expansion coefficient of titanium and iron, thermal conductivity difference are larger, in welding point
Larger internal stress and hard crisp intermetallic compound are easy tod produce, low-melting-point eutectic is formed.In addition, titanium or strong carbide
Carbon electrode in formation element, with steel easily forms brittle TiC.Finally so that weld seam easily cracks, so must select to close
Suitable welding procedure and method.
Composite plate is welded, existing method is mostly to weld indirectly, is both needed to addition transition zone, such as patent《A kind of titanium-
Steel composite board full impregnated welding method》In, it needs to add intermediate layer of the vanadium as titanium steel composite board compound interface, welding starts
Before the groove of intermediate layer is cleared up, postwelding clears up intermediate layer weld seam, and tedious process is complicated.
It is to control two welding guns by two power supplys to be carried out at the same time welding, Ke Yi great in workpiece both sides that double sides double arc, which connects method,
Width improves welding efficiency, Reducing distortion, while compared with multi-pass welding, reduces energy loss, saves the energy.Due to both sides electricity
Arc parameter can be separately adjustable, therefore is convenient for separately adjustable both sides welding parameter, realizes that positive and negative directly penetrate, while can be with
Avoid the formation of compound between composite plate joint metal.It can be disposably directly complete using the double sides double arc connection technology of fusion penetration control
At the welding of 5-10mm composite plates, temporarily reported without correlative study in the industry.
Invention content
The object of the present invention is to provide a kind of composite plate fusion penetration control welder and its welding methods.
Technical solution of the invention is：
A kind of two-sided double arc vertical position welding fusion penetration control devices of composite plate, including welding gun A, welding gun B, arc length control device, industry control
Machine, welding robot A, welding robot B, source of welding current A and source of welding current B；Machine everybody A, welding robot B are separately connected
The positive and negative anodes of source of welding current A and source of welding current B,
Arc length control device is used to detect the weldingvoltage of welding gun, adjusts robot tool coordinate position；
Industrial personal computer carries out reduction to received signal and shows for receiving signal；Wherein, in the pci card slot of industrial personal computer
Usb data capture card for receiving signal and being sampled is installed.
Double sides double arc is connect method and is combined with welding arc control technology by a kind of welding method of composite plate, is realized compound
Fusion penetration in plate welding process accurately controls, and includes the following steps：
Step 1, bevel process is carried out to composite plate to be welded：The base of test plate (panel) A to be welded is cut off into 2-5mm, is allowed to be formed
The cladding of test plate (panel) B to be welded is cut off same widths, both sides test plate (panel) is enable to realize docking by the boss type groove that angle is 90 °；
Step 2, the region of 40mm near composite plate groove is cleared up, fixed test plate (panel) to be welded make its horizontal by
90°；
Step 3, welding gun is adjusted to starting the arc position, it is ensured that both sides welding gun is in sustained height, and both sides tungsten electrode tip is right respectively
The seam center of accurate composite plate to be welded；
Step 4, welding current is respectively set according to composite plate base and plied timber in setting welding condition, welds
The striking simultaneously of both sides welding gun, is moved from the bottom up with identical speed after beginning；
Step 5, in welding process, voltage stabilization is controlled in initial value by adjusting arc length, until welding terminates.
By adjusting arc length come control voltage stabilization initial value the specific steps are：
Step 5.1, in welding process, the voltage data of acquisition is transferred to data collecting card, data by arc length control device
Capture card transfers data to industrial personal computer, obtains voltage waveform；
Step 5.2, the relational model database between fusion penetration and voltage is established；
Step 5.3, according to the thickness of workpiece base and composite layer to be welded, the model database established in query steps 6 obtains
Obtain corresponding voltage value US1And US2；
Step 5.4, if the detection voltage of two welding guns is more than or less than U when weldingS1And US2, arc length control device detection
To variable quantity, instruction then is sent out to robot more than given threshold, robot adjusts electric arc by mobile tool coordinates Z axis position
Length makes weldingvoltage return to initial value.
Further, composite plate is using 5-10mm titaniums-steel, Stainless Steel Steel Clad Plate.
Further, in welding process, the argon gas that purity is 99.9% is used to be used as protection gas, the protective gas of base side
Flow is 10-15L/min, and the shield gas flow rate of cladding side is 8-12L/min.
Further, using tungsten electrode diameter 3.2mm, tungsten electrode tip to composite plate distance is 2~5mm, the shape at tungsten electrode tip
Shape is cone, and grinding angle is 45 °
Compared with prior art, the present invention its remarkable advantage is：
1, it realizes that centering thickness composite plate is directly welded, does not have to addition transition zone, reduce process, improve efficiency.
2, the present invention connects technique using double sides double arc, and double arcs weld simultaneously, forms common molten pool, and efficiency improves, welding
It deforms small.
3, the present invention uses welding arc control technology, accurately controls welding penetration, it is ensured that base and cladding penetration and does not produce
Life generates intermetallic compound on a small quantity.
Description of the drawings
Fig. 1 is the two-sided double arc vertical position welding fusion penetration control device schematic diagrames of composite plate of the present invention；
Fig. 2 is the applicable composite plate groove type of the present invention；
Fig. 3 is the double sides double arc termination process schematic diagram of the present invention.Fig. 3 (a) is vertical view, and Fig. 3 (b) is left view.
Wherein, 1, welding gun A；2, welding gun B；3, source of welding current A；4, arc length control device；5, industrial personal computer；7, welding robot
A；8, welding robot B；9, tungsten electrode A；10, tungsten electrode B；11, source of welding current B.
Specific implementation mode
The present invention is described further below in conjunction with the accompanying drawings：
Such as Fig. 1, the two-sided double arc vertical position welding fusion penetration control devices of composite plate include：Welding gun A, welding gun B, arc length control device 4, work
Control machine 5, welding robot A, welding robot B, source of welding current A and source of welding current B；Machine everybody A, welding robot B difference
The positive and negative anodes of connecting welding power supply A and source of welding current B,
The arc length control device 4 is used to detect the weldingvoltage of welding gun, adjusts robot tool coordinate position；
The industrial personal computer 5 carries out reduction to received signal and shows for receiving signal；Wherein, industrial personal computer 5
Usb data capture card of the installation for receiving signal and being sampled in pci card slot.
In conjunction with Fig. 2, composite plate 1 and 2 to be welded is processed into such as diagram shape, i.e. 1 cut-out base of composite plate, it is compound
2 cut-out cladding of plate, does not process bevel groove, two seams are at a distance of 2-5mm；
In conjunction with Fig. 3, welding gun A and welding gun B is respectively aligned to respective side seams center when welding, and striking point is in same level
On, while striking, synchronize upward (vertical paper is outside) welding；
Specifically welding step is：
Step 1, bevel process is carried out to composite plate to be welded：The base of test plate (panel) A to be welded is cut off into 2-5mm, is allowed to be formed
The cladding of test plate (panel) B to be welded is cut off same widths, both sides test plate (panel) is enable to realize docking by the boss type groove that angle is 90 °；
Step 2, the region of 40mm near composite plate groove is cleared up, fixed test plate (panel) to be welded make its horizontal by
90°；
Step 3, welding gun is adjusted to starting the arc position, it is ensured that both sides welding gun is in sustained height, and both sides tungsten electrode tip is right respectively
The seam center of accurate composite plate to be welded；
Step 4, welding current is respectively set according to composite plate base and plied timber in setting welding condition, welds
The striking simultaneously of both sides welding gun, is moved from the bottom up with identical speed after beginning；
Step 5, in welding process, voltage stabilization is controlled in initial value by adjusting arc length, until welding terminates.
By adjusting arc length come control voltage stabilization initial value the specific steps are：
Step 5.1, in welding process, the voltage data of acquisition is transferred to data collecting card, data by arc length control device
Capture card transfers data to industrial personal computer, obtains voltage waveform；
Step 5.2, the relational model database between fusion penetration and voltage is established；
Step 5.3, according to the thickness of workpiece base and composite layer to be welded, the model database established in query steps 6 obtains
Obtain corresponding voltage value US1And US2；
Step 5.4, if the detection voltage of two welding guns is more than or less than U when weldingS1And US2, arc length control device detection
To variable quantity, instruction then is sent out to robot more than given threshold, robot adjusts electric arc by mobile tool coordinates Z axis position
Length makes weldingvoltage return to initial value.
Embodiment 1
10mm titanium-steel composite boards are docked, steel is base, and thickness 8mm, titanium is cladding, thickness 2mm, groove
Shape such as Fig. 1, seam is at a distance of 4mm.Using from molten argon tungsten arc process welding, electrode uses cerium tungsten, tungsten electrode diameter 3.2mm,
Tungsten electrode A, the tungsten electrode B of both sides be 3mm apart from workpiece surface, welding protection gas is 99.999% high-purity argon, titanium side gas stream
Amount is 10L/min, and steel side gas flow is 12L/min.
By inquiring fusion penetration and voltage relationship model database, acquisition penetration 8mm steel standard voltage values are 15V, and are melted
Saturating 2mm titanium plate standard voltage values are 9V.Voltage check device acquisition composite plate both sides starting the arc stage voltage is when welding
11.8V plays segmental arc molten bath and is not yet formed, do not considered, and arc length adjustment algorithm does not consider to start section 20mm；With welding process
It carries out, base's voltage becomes 14.8V, and cladding voltage is 8.9V, and starts to stablize；When close to weld seam end, base's voltage is prominent
Become 15.9V, cladding voltage becomes 10V.Set adjust threshold value as 0.3V, when close to weld seam end, real-time voltage and standard value
Difference be more than adjust threshold value, start arc length adjustment mechanism, adjusted by pid algorithm as a result, steel side tungsten electrode reduction 0.3mm,
Titanium side tungsten electrode reduces 0.2mm.Postwelding is found by means such as metallographic detections, is compared conventional transition layer welding method, is changed between metal
It closes object quantity and declines 50% or more.
Embodiment 2
10mm Stainless Steel Steel Clad Plates are docked, steel is base, and thickness 8mm, stainless steel is cladding, and thickness is
2mm, bevel shape such as Fig. 1, seam is at a distance of 4mm.Using from molten argon tungsten arc process welding, electrode uses cerium tungsten, tungsten electrode straight
Diameter 3.2mm, tungsten electrode A, the tungsten electrode B of both sides are 3mm apart from workpiece surface, and welding protection gas is 99.999% high-purity argon, stainless
Steel side gas flow is 12L/min, and steel side gas flow is 15L/min.
By inquiring fusion penetration and voltage relationship model database, acquisition penetration 8mm steel standard voltage values are 15V, and are melted
Saturating 2mm stainless steel plate standard voltage values are 8V.Voltage check device acquisition composite plate both sides starting the arc stage voltage is when welding
11.8V, after the 20mm that walks, arc length adjustment starts to act on welding gun；With the progress of welding process, base's voltage becomes
14.8V, cladding voltage is 7.8V, and starts to stablize；When close to weld seam end, base's voltage jump is 15.9V, cladding voltage
Become 8.8V.It setting and adjusts threshold value as 0.3V, when close to weld seam end, the difference of real-time voltage and standard value is more than to adjust threshold value,
Start arc length adjustment mechanism, is adjusted by pid algorithm as a result, steel side tungsten electrode and test plate (panel) Distance Shortened 0.3mm, stainless steel side
Tungsten electrode and test plate (panel) Distance Shortened 0.2mm.Postwelding is found by means such as metallographic detections, compares conventional transition layer welding method, gold
Compound amounts decline 50% or more between category.
Claims (7)
1. a kind of two-sided double arc vertical position welding fusion penetration control devices of composite plate, which is characterized in that including welding gun A (1), welding gun B (2), arc
Long control device (4), industrial personal computer (5), welding robot A (7), welding robot B (8), source of welding current A (3) and source of welding current B
(11)；Machine everybody A, welding robot B are separately connected the positive and negative anodes of source of welding current A (3) and source of welding current B (11),
The arc length control device (4) is used to detect the weldingvoltage of welding gun, adjusts robot tool coordinate position；
The industrial personal computer (5) carries out reduction to received signal and shows for receiving signal；Wherein, industrial personal computer (5)
Usb data capture card of the installation for receiving signal and being sampled in pci card slot.
2. a kind of welding method based on the two-sided double arc vertical position welding fusion penetration control devices of composite plate described in claim 1, feature
It is, includes the following steps：
Step 1, bevel process is carried out to composite plate to be welded；
Step 2, the region of 40mm near composite plate groove is cleared up, fixed test plate (panel) to be welded makes it horizontal by 90 °；
Step 3, welding gun is adjusted to starting the arc position, it is ensured that both sides welding gun is in sustained height, and both sides eletrode tip is respectively aligned to wait for
Weld the seam center of composite plate；
Step 4, welding current is respectively set according to composite plate base and plied timber in setting welding condition, and welding starts
Both sides welding gun striking simultaneously afterwards, is moved from the bottom up with identical speed；
Step 5, in welding process, voltage stabilization is controlled in initial value by adjusting arc length, until welding terminates.
3. welding method according to claim 2, which is characterized in that the bevel process is：By test plate (panel) A's to be welded
Base cuts off 2-5mm, is allowed to the boss type groove that shape is angled 90 °, and the cladding of test plate (panel) B to be welded is cut off same widths, is made
Both sides test plate (panel) can realize docking.
4. welding method according to claim 2, which is characterized in that described to control voltage stabilization by adjusting arc length
Initial value the specific steps are：
Step 5.1, in welding process, the voltage data of acquisition is transferred to data collecting card, data acquisition by arc length control device
Card transfers data to industrial personal computer, obtains voltage waveform；
Step 5.2, the relational model database between fusion penetration and voltage is established；
Step 5.3, according to the thickness of workpiece base and composite layer to be welded, the model database established in query steps 6 obtains pair
The voltage value U answeredS1And US2；
Step 5.4, if the detection voltage of two welding guns is more than or less than U when weldingS1And US2, arc length control device detects variation
Amount then sends out instruction more than given threshold to robot, and robot adjusts arc length by mobile tool coordinates Z axis position,
Weldingvoltage is set to return to initial value.
5. welding method according to claim 2, which is characterized in that in welding process, use purity for 99.9% argon
Gas is as protection gas, and the shield gas flow rate of base side is 10-15L/min, and the shield gas flow rate of cladding side is 8-12L/
min。
6. welding method according to claim 2, which is characterized in that the tungsten electrode diameter 3.2mm, tungsten electrode tip is to again
Plywood distance is 2~5mm, and the shape at tungsten electrode tip is cone, and grinding angle is 45 °.
7. welding method according to claim 2, the composite plate is that thickness 5-10mm titaniums-steel or stainless steel-steel is compound
Plate.
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| CN201710022690.4A CN108296603B (en) | 2017-01-12 | 2017-01-12 | Double-sided double-arc vertical welding penetration control device and welding method thereof |
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| CN201710022690.4A CN108296603B (en) | 2017-01-12 | 2017-01-12 | Double-sided double-arc vertical welding penetration control device and welding method thereof |
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Cited By (5)
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| CN109514052A (en) * | 2018-12-27 | 2019-03-26 | 安徽工业大学 | A kind of high-strength steel welding method of thin plate and application |
| CN110340496A (en) * | 2019-08-14 | 2019-10-18 | 开封空分集团有限公司 | The two-sided vertical position welding ancillary equipment of aluminium |
| CN110405384A (en) * | 2019-06-26 | 2019-11-05 | 上海展湾信息科技有限公司 | Method and system for real-time detection insufficient (incomplete) penetration during robot welding |
| CN110948087A (en) * | 2019-12-13 | 2020-04-03 | 河南理工大学 | Method for cladding and surfacing of surface of hydraulic cylinder barrel |
| CN114282689A (en) * | 2022-03-04 | 2022-04-05 | 苏芯物联技术(南京)有限公司 | Universal welding arcing real-time intelligent detection method and system |
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| CN110948087A (en) * | 2019-12-13 | 2020-04-03 | 河南理工大学 | Method for cladding and surfacing of surface of hydraulic cylinder barrel |
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