CN106553012A - For titanium alloy laser MIG Combined Welding postwelding protective covers and welding method - Google Patents
For titanium alloy laser MIG Combined Welding postwelding protective covers and welding method Download PDFInfo
- Publication number
- CN106553012A CN106553012A CN201611112600.2A CN201611112600A CN106553012A CN 106553012 A CN106553012 A CN 106553012A CN 201611112600 A CN201611112600 A CN 201611112600A CN 106553012 A CN106553012 A CN 106553012A
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- Prior art keywords
- welding
- protective cover
- postwelding
- mig
- housing
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
Abstract
The invention discloses a kind of be used for titanium alloy laser MIG Combined Welding postwelding protective covers; including housing protective cover; the top of the housing protective cover is hinged with cross bar is connected; the fixedly connected part that fixed MIG welds welding gun is installed on connection cross bar; the bottom of housing protective cover is provided with copper mesh; breather is installed on the afterbody of housing protective cover, breather is connected with pneumatic gas-tpe fitting slotting soon, and the oblique arc surface for installing that MIG welds welding gun is provided with housing protective cover front end.One kind of the present invention is used for titanium alloy laser MIG Combined Welding postwelding protective covers and welding method; the protective gas flowing of weld seam can be caused steady; protected area increases; guard time increases; and weld seam is in into sustainable protection state in postwelding, greatly reduce the probability of postwelding bead contact air.
Description
Technical field
The present invention relates to be used for titanium alloy laser-MIG hybrid welding postwelding protective cover and welding method, belong to welding neck
Domain.
Background technology
Laser welding is high density energy to be concentrated on one point, thus can make heat input fusion zone, heat affected area
It is minimized, and speed of welding welds faster than TIG, MIG, shortens process time, while deforming very little, eliminates two
Secondary processing.Compared with pure Laser Welding, laser-MIG hybrid welding adopts laser beam and electric arc cooperation, and welding process is stable, heat
The bigger assemble welding gap of efficiency high and permission.But due to titanium alloy, zircaloy heat conductivility it is poor, while at 300 DEG C
Above weld seam easily inhales hydrogen, oxygen uptake, and high-temperature oxydation causes weld seam easily to produce the defects such as pore, undercut and depression, weld seam into
Type and poor performance, so as to affect the production efficiency of enterprise, become a difficult problem for restriction laser-MIG hybrid welding welding application.At present
Some laser-MIG hybrid welding postwelding protective cover structures are excessively complicated, and volume is larger, and cost of manufacture is higher, and many occasions
Can not be suitable for.Accordingly, it would be desirable to a kind of compact volume and convenience simultaneously can ensure that protective gas to the laser of weld seam guard time and effect-
MIG welds postwelding housing protective cover.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provide it is a kind of for titanium alloy laser-
MIG Combined Welding postwelding protective covers and welding method, can cause the protective gas flowing of weld seam steady, and protected area increase is protected
The shield time increases, and weld seam is in sustainable protection state in postwelding, and is applied to laser-MIG hybrid welding downhand welding and drift angle
Welding in the case of degree, greatly reduces the probability of postwelding bead contact air.
Technical scheme：To solve above-mentioned technical problem, one kind of the present invention is used for titanium alloy laser-MIG hybrid welding postwelding
Protective cover, including housing protective cover, the top of the housing protective cover are hinged with cross bar is connected, and connection cross bar is marked with quarter
Degree, connects the fixedly connected part for being provided with cross bar that fixed MIG welds welding gun, and the bottom of housing protective cover is provided with copper mesh, housing
Breather is installed on the afterbody of protective cover, breather is connected with pneumatic gas-tpe fitting slotting soon, is provided with housing protective cover front end
The oblique arc surface that MIG welds welding gun is installed.
Preferably, a pair of L-type connectors are provided with the top of the housing protective cover, connection cross bar is hinged on L-type connection
On part.
Preferably, described copper mesh one end is arranged on housing protective cover by elastic clip, the other end passes through rectangle set
Support, rectangle set is on housing protective cover.
Preferably, the breather is the rustless steel for respectively possessing row rule small sircle hole and one end closing on two root canal walls
Pipe, it is in a row parallel to be fixed on housing protective cover and arrange small sircle hole towards housings close face.
Preferably, the fixedly connected part includes active rectangle block and rectangular block fixing base, the rectangular block is fixed
Matrix is enclosed within connection cross bar, and active rectangle block is connected with rectangular block fixing base so as to fixed MIG welderings weldering by two screws
Rifle.
Preferably, the housing protective cover passes through to be welded to connect with breather.
A kind of above-mentioned welding method for titanium alloy laser-MIG hybrid welding postwelding protective cover, including following step
Suddenly：
(1) housing protective cover is fixed on MIG weldering welding guns, and housing protective cover lower surface is parallel with weld seam, at a distance of 30
～40mm, pneumatic gas-tpe fitting slotting soon is connected with protective gas；
(2) wlding surface and oil contaminant and oxide-film are cleaned out, is placed on weld jig and assembles；
(3) whole story point of setting Combined Welding welding and the bonding power of laser-MIG hybrid welding welding, welding speed are adjusted
Degree, defocusing amount, welding current, chevilled silk spacing, welding wire elongation, gas shield flow etc., preferentially using laser aiming electric arc
Welding manner；
(4) protective gas is passed through in advance before welding, and displaces the air in housing protective cover；
(5), after the completion of welding, laser metal inert-gas welding postwelding housing protective cover is rested on into weld seam the preceding paragraph time, weld seam temperature is treated
When degree is down to less than 300 DEG C, then lift robotic manipulator.
Preferably, the step (1) and the protective gas in (4) are argon.
Preferably, laser output power is 2000W in the step (3), speed of welding is 1.2m/min, defocusing amount
For -2mm, welding current is 100A, and chevilled silk spacing is 3mm.
Preferably, laser output power is 3750W in the step (3), speed of welding is 1.2m/min, and defocusing amount is
0mm, welding current are 100A, and chevilled silk spacing is 3mm.
In the present invention, the connection cross bar is marked with scale, can be accurately positioned housing protective cover lower surface by scale
Distance between weld seam.Meanwhile, fixedly connected part is fixed on the MIG weldering welding gun body of a guies, can control housing by adjusting connection cross bar
Protective cover position, welds welding gun pipette tips without dimensional requirement to MIG, and range of application is wider.The oblique arc surface in the housing protective cover front end
Bottom is seamlessly transitted with chamfering, is played a part of guide housing protective cover front end air-flow and is steadily flowed out forward, while preventing air
It is involved in, increases the protection to initial weld seam.At the top of the housing protective cover and connection cross bar between adjustable-angle, it is ensured that housing
Drag cover bottom surface with weld seam in parastate, weld seam protection requirement when laser-MIG hybrid welding downhand welding is welded with inclination angle can be completed.
The housing drags the copper mesh of cover bottom, drags shield gas flow rates different in cover to be capable of achieving gas current stabilization work to being passed through housing
With, and copper mesh is placed in housing and drags cover bottom, enters weld seam protection region to reduce gas after current stabilization as close possible to welded seam area
Distance.The oblique arc surface in the housing protective cover front end, MIG weldering welding guns of fitting as far as possible, reduces welding gun and housing is dragged between cover
Gap, prevents air to be involved in, and turbulence occurs, while also increasing the protection of all heat affected zones of Welded Joints.
Beneficial effect：Compared with prior art, the present invention possesses advantage and beneficial effect：
1. the laser metal inert-gas welding postwelding housing protective cover that the present invention is provided, can cause the protective gas flowing of weld seam steady,
Protected area increases, and guard time increases, and weld seam is in sustainable protection state in postwelding, greatly reduces postwelding weld seam
The probability of ingress of air, has prevented the generation that weld seam inhales the unfavorable factors such as hydrogen, oxygen uptake, it is ensured that weldquality, has improve life
Produce efficiency and quality.
2. the laser metal inert-gas welding postwelding housing protective cover that the present invention is provided, design structure are simple, portable and smart, handling letter
Just, low cost, good fixing effect can apply the laser-MIG hybrid welding of the material such as titanium zirconium and titanium-zirconium alloy under different occasions
In welding.
3. the present invention can realize the postwelding protection of 4mm and following titanium plate weld seam, and appearance of weld is good.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is present invention welding schematic diagram.
Fig. 3 is rectangle set schematic diagram in Fig. 1.
Fig. 4 is the close-up schematic view of G in Fig. 1.
Specific embodiment
Embodiment 1
As shown in Figures 1 to 4, it is a kind of to be used for titanium alloy laser-MIG hybrid welding postwelding protective cover, including being fixedly connected
Part 14, connection cross bar 4, housing protective cover 8, breather 5, pneumatic slotting soon gas-tpe fitting 12, copper mesh 10, the fixedly connected part 14
It is fixed on MIG welderings welding gun side, the connection cross bar 4 is connected connector 14 and housing protective cover 8, sets on connection cross bar 4
There is scale, the housing protective cover 8 is close to MIG weldering welding guns lower end, and the breather 5 is respectively to possess row rule on two root canal walls
Small sircle hole and the stainless steel tube of one end closing, it is in a row parallel to be fixed in housing protective cover and arrange small sircle hole towards housings close
Face, the copper mesh 10 passes through elastic clip 9 and arc surface rectangle set 11 is embedded in housing protective cover, and the pneumatic trachea slotting soon connects
12 are connected to 5 inlet end of breather by female thread, and the other end is passed through protective gas.The fixedly connected part 14 includes activity
Rectangular block 2 and rectangular block fixing base 1, the active rectangle block 2 pass through two screws 3 and 1 phase fixed of rectangular block fixing base
It is scheduled on MIG weldering welding guns, semi arch of the rectangular block fixing base 1 with indent, two through holes and one are used for fixed company
Connect the square indentations of cross bar 4, the square indentations length of side is 18mm, the semi arch rectangular block has indent semi arch and two
Through hole, the arc radius are 10mm, and through hole is screwed hole, and aperture is Φ 4.The connection cross bar 4 and housing protective cover 8
Connected by L-type connector 7, by the angle between adjustment housings protective cover 8 and connection cross bar 4, it is ensured that drag cover lower surface with weldering
Fitting is in parastate.The housing protective cover 8 is fixed on comprising oblique arc surface, two circular ports and two and drags cover upper surface
L-type connector 7, inserts breather 5, and breather 5 is welded on housing protective cover 8, it is ensured that air-tightness in the circular port, circle
The radius in shape hole is 5mm, and the L-type connector 7 is fixed on the upper surface of housing protective cover 8 in mirror image.The breather 5 is two
Respectively possess the stainless steel tube of row rule small sircle hole and one end closing on root canal wall, it is in a row parallel to be fixed on housing protective cover 8
And small sircle hole is arranged towards housings close face.The pneumatic gas-tpe fitting 12 slotting soon is fixed on breather 5, separately by female thread
One end connects steam hose, is passed through protective gas.The copper mesh 10 is horizontally placed in housing protective cover 8, rectangular by arc surface
Shape set 11 and four elastic clips 9 are fixed at 8 bottom 5mm of housing protective cover.The fixedly connected part 14, connection cross bar 4,
Housing protective cover 8 and 5 material of breather are rustless steel, and pneumatic 12 material of gas-tpe fitting slotting soon is all plastics, the ventilation
Hose materials are rubber.
As shown in figure 1, laser-MIG hybrid welding postwelding housing protective cover protective gas enters from pneumatic gas-tpe fitting 12 slotting soon
Enter in breather 5, housing protective cover 8 is filled by protective gas by small sircle hole, be then passed through copper mesh 10, protect weld seam.Copper mesh 10
Air sifter and distribution effect are acted primarily as, makes noble gases state be laminar flow, flowed more steady, so as to reach optimal protected effect.
Before welding, protective gas is passed through in advance, displace the air in laser-MIG hybrid welding postwelding housing protective cover.
As shown in Figure 2, the method welded for the titanium plate built-up welding of titanium alloy laser metal inert-gas welding postwelding housing protective cover, its
In with titanium plate to be welded as TA2 industrially pure titaniums, size be 120mm × 60mm × 3mm as a example by.Concrete steps and technological parameter are：
(1) laser metal inert-gas welding postwelding housing protective cover is fixed on MIG weldering welding guns with screw, and lower surface is put down with weld seam
Row and apart 30～40mm, pneumatic gas-tpe fitting slotting soon is connected with protective gas；
(2) oxide film dissolving is removed into using polisher in wlding surface, then the impurity such as greasy dirt is cleaned out using acetone wiping,
It is placed in assembling on weld jig to complete；
(3) adjust set Combined Welding welding whole story point and laser-MIG hybrid welding weld laser output power as
2000W, speed of welding are 1.2m/min, defocusing amount is 0mm, welding current is 100A, chevilled silk spacing is 3mm, welding wire elongation
Shielding gas flow is passed through for 15L/min for 13mm, MIG weldering welding gun, back-protective throughput is 50L/min, laser-MIG is combined
Postwelding housing protective cover shielding gas flow is welded for 50L/min, welding manner of the present embodiment using laser aiming electric arc；
(4) protective gas is passed through in advance before welding, and displaces the air in laser-MIG hybrid welding postwelding housing protective cover；
(5), after the completion of welding, laser metal inert-gas welding postwelding housing protective cover is stopped into 30s, after weld seam temperature drop, then is lifted
Play robotic manipulator.
Using argon as protective gas, a protective layer can be formed in welding process, by oxygen-barrier, face of weld is
Silvery white, reduces pore and produces, improve weldquality.
Embodiment 2
As currently preferred technical scheme, according to debugging to titanium plate laser-MIG hybrid welding welding parameter, with TA2 works
The pure titanium of industry, as a example by size is 120mm × 60mm × 3mm, described parameter is welded by the technological parameter of following setting, laser
Output is 2000W, speed of welding is 1.2m/min, defocusing amount is -2mm, welding current is 100A, chevilled silk spacing is 3mm,
It is 15L/min that welding wire elongation is passed through shielding gas flow for 13mm, MIG weldering welding gun, and back-protective throughput is 50L/min, is swashed
Light-MIG Combined Welding postwelding housing protective cover shielding gas flow is 50L/min, and after the completion of welding, laser metal inert-gas welding postwelding housing is protected
Shield stops 30s sustainable protection weld seams.The weld seam welded using the present embodiment technological parameter, the complete penetration in the back side, molding is more
It is attractive in appearance.Remaining structure is identical with embodiment 1 with advantage.
Embodiment 3
As currently preferred technical scheme, according to debugging to titanium plate laser-MIG hybrid welding welding parameter, with TA2 works
The pure titanium of industry, as a example by size is 120mm × 60mm × 4.2mm, described parameter is welded by the technological parameter of following setting, is swashed
Optical output power is 3750W, speed of welding is 1.2m/min, defocusing amount is 0mm, welding current is 100A, chevilled silk spacing is
It is 15L/min that 2mm, welding wire elongation are passed through shielding gas flow for 13mm, MIG weldering welding gun, and back-protective throughput is 50L/
Min, laser-MIG hybrid welding postwelding housing protective cover shielding gas flow are 50L/min, after the completion of welding, laser metal inert-gas welding postwelding
Housing protective cover stops 30s, sustainable protection weld seam.The weld seam welded using the present embodiment technological parameter, front beautiful appearance, table
Face is silvery white, without splashing.
Embodiment 4
As currently preferred technical scheme, according to debugging to titanium plate laser-MIG hybrid welding welding parameter, with TA2 works
The pure titanium of industry, as a example by size is 120mm × 60mm × 4.2mm, described parameter is welded by the technological parameter of following setting, is swashed
Optical output power is 3750W, speed of welding is 1.2m/min, defocusing amount is 0mm, welding current is 100A, chevilled silk spacing is
It is 15L/min that 3mm, welding wire elongation are passed through shielding gas flow for 13mm, MIG weldering welding gun, and back-protective throughput is 50L/
Min, laser-MIG hybrid welding postwelding housing protective cover shielding gas flow are 50L/min, after the completion of welding, laser metal inert-gas welding postwelding
Housing protective cover stops 30s, sustainable protection weld seam.The weld seam welded using the present embodiment technological parameter, between electric arc and laser
Interact and reduce, the complete penetration in the back side.Remaining structure is identical with embodiment 3 with advantage.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- It is 1. a kind of to be used for titanium alloy laser-MIG hybrid welding postwelding protective cover, it is characterised in that：It is including housing protective cover, described The top of housing protective cover is hinged with cross bar is connected, and connection cross bar is marked with scale, and fixed MIG welderings weldering is provided with connection cross bar The fixedly connected part of rifle, the bottom of housing protective cover are provided with copper mesh, and breather is provided with the afterbody of housing protective cover, ventilation Pipe is connected with pneumatic gas-tpe fitting slotting soon, and the oblique arc surface for installing that MIG welds welding gun is provided with housing protective cover front end.
- 2. according to claim 1 for titanium alloy laser-MIG hybrid welding postwelding protective cover, it is characterised in that：It is described A pair of L-type connectors are installed at the top of housing protective cover, connection cross bar is hinged on L-type connector.
- 3. according to claim 1 for titanium alloy laser-MIG hybrid welding postwelding protective cover, it is characterised in that：It is described Copper mesh one end is arranged on housing protective cover by elastic clip, and the other end is supported by rectangle set, and rectangle set is installed in shell On body protective cover.
- 4. according to claim 1 for titanium alloy laser-MIG hybrid welding postwelding protective cover, it is characterised in that：It is described Breather is the stainless steel tube for respectively possessing row rule small sircle hole and one end closing on two root canal walls, in a row parallel to be fixed on housing On protective cover and arrange small sircle hole towards housings close face.
- 5. according to claim 1 for titanium alloy laser-MIG hybrid welding postwelding protective cover, it is characterised in that：It is described Fixedly connected part includes active rectangle block and rectangular block fixing base, and the rectangular block fixing base is enclosed within connection cross bar, living Dynamic rectangular block is connected with rectangular block fixing base by two screws and weld welding gun so as to fixed MIG.
- 6. according to claim 1 for titanium alloy laser-MIG hybrid welding postwelding protective cover, it is characterised in that：It is described Housing protective cover is with breather by being welded to connect.
- 7. a kind of usage right require described in 1 to 6 any one for titanium alloy laser-MIG hybrid welding postwelding protective cover Welding method, it is characterised in that comprise the following steps：(1) housing protective cover is fixed on MIG weldering welding guns, and housing protective cover lower surface is parallel with weld seam, apart 30～ 40mm, pneumatic gas-tpe fitting slotting soon is connected with protective gas；(2) wlding surface and oil contaminant and oxide-film are cleaned out, is placed on weld jig and assembles；(3) adjust setting Combined Welding welding whole story point and laser-MIG hybrid welding welding bonding power, speed of welding, from Jiao Liang, welding current, chevilled silk spacing, welding wire elongation, the size of gas shield flow；(4) protective gas is passed through in advance before welding, and displaces the air in housing protective cover；(5) after the completion of welding, laser metal inert-gas welding postwelding housing protective cover is rested on into weld seam the preceding paragraph time, treats that weld seam temperature drops During to less than 300 DEG C, then lift robotic manipulator.
- 8. the welding method for titanium alloy laser-MIG hybrid welding postwelding protective cover according to claim 7, which is special Levy and be：Protective gas in the step (1) and (4) is argon.
- 9. the welding method for titanium alloy laser-MIG hybrid welding postwelding protective cover according to claim 7, which is special Levy and be：In the step (3), laser output power is 2000W, and speed of welding is 1.2m/min, and defocusing amount is -2mm, is welded Electric current is 100A, and chevilled silk spacing is 3mm.
- 10. the welding method for titanium alloy laser-MIG hybrid welding postwelding protective cover according to claim 7, which is special Levy and be：In the step (3), laser output power is 3750W, and speed of welding is 1.2m/min, and defocusing amount is 0mm, welding electricity Flow for 100A, chevilled silk spacing is 3mm.
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| CN201611112600.2A CN106553012A (en) | 2016-12-06 | 2016-12-06 | For titanium alloy laser MIG Combined Welding postwelding protective covers and welding method |
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| CN201611112600.2A CN106553012A (en) | 2016-12-06 | 2016-12-06 | For titanium alloy laser MIG Combined Welding postwelding protective covers and welding method |
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| CN108067736A (en) * | 2017-11-21 | 2018-05-25 | 华中科技大学 | A kind of narrow gap laser-arc hybrid welding in industry gas shield device and adjusting method |
| CN109014511A (en) * | 2018-09-29 | 2018-12-18 | 南京奥特电气股份有限公司 | A kind of heated filament pulsed argon arc H-P-TIG automatic welding method |
| CN110064845A (en) * | 2019-05-07 | 2019-07-30 | 武汉金顿激光科技有限公司 | A kind of gas shield device of hybrid Laser-Arc Welding machine |
| CN110153420A (en) * | 2019-06-04 | 2019-08-23 | 航发优材(镇江)增材制造有限公司 | A kind of titanium alloy protection cabin device and laser gain material manufacturing method |
| CN112705826A (en) * | 2020-12-18 | 2021-04-27 | 温州大学 | Welding cooling protective cover |
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| CN113814535A (en) * | 2021-10-09 | 2021-12-21 | 江苏科技大学 | Welding method of heterogeneous titanium alloy T-shaped joint |
| CN114147349A (en) * | 2021-11-17 | 2022-03-08 | 渤海造船厂集团有限公司 | Narrow-gap laser-TIG (tungsten inert gas) hybrid welding gas protection device and method |
| CN117020367A (en) * | 2023-10-08 | 2023-11-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Welding device and welding method for titanium alloy supporting ring of engine tail nozzle |
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