CN107931793A - A kind of titanium alloy welding back of the body protective device and welding method - Google Patents
A kind of titanium alloy welding back of the body protective device and welding method Download PDFInfo
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- CN107931793A CN107931793A CN201711053077.5A CN201711053077A CN107931793A CN 107931793 A CN107931793 A CN 107931793A CN 201711053077 A CN201711053077 A CN 201711053077A CN 107931793 A CN107931793 A CN 107931793A
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- welding
- groove
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- titanium alloy
- cold plate
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K9/32—Accessories
- B23K9/323—Combined coupling means, e.g. gas, electricity, water or the like
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
-
- 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 present invention relates to a kind of titanium alloy welding to carry on the back protective device, including cold plate, and groove is provided with cold plate, it is characterised in that：Gas shield module can be assembled by being equipped with groove; the gas shield module of assembling includes being provided thereon among portion and is penetrated through from its one end to other end of first groove; second groove arranged on the outside of the two side walls of the first groove; and connect multiple through holes of the first groove and second groove; the both ends of the second groove are connected to ventilating joint, to connect back of the body protective gas.Compared with prior art, the advantage of the invention is that：It can guarantee that the protection that continuous uniform is played to back of weld, face of weld quality can reach bright silver or gold by range estimation；Avoid the situation that copper pipe ventilation causes air copper tube to be welded in the prior art；It can realize and the available gas of many special-shaped weld seams such as flat bent weld seam, right angle welding seam or curved welding seam is protected.
Description
Technical field
The invention belongs to material and component to prepare manufacture field, and in particular to a kind of titanium alloy welding back of the body protective device and weldering
Connect method.
Background technology
Titanium or titanium alloy has many advantages, such as density is low, specific strength is high, excellent corrosion-proof performance, good welding performance,
It is used widely in the fields such as Aeronautics and Astronautics, ship, weapons, chemical industry.
Argon tungsten-arc welding is most widely used one kind in titanium or titanium alloy welding procedure, is commonly referred to as TIG welderings in the world,
It is the main method for connecting thin-sheet metal and backing welding.The technique belongs to non consumable arc welding electrode gas shielded arc welding, utilizes tungsten electrode and workpiece
Between electric arc make metal molten so as to forming weld seam.Tungsten electrode is non-fusible in welding process, only shields.At the same time by welding torch
Nozzle be sent into argon gas make protective gas.
But since the chemism of titanium is strong, with increasing for temperature, its chemism will also increase rapidly, and solid
Various gases can be absorbed under state.Such as：, will adsorbed hydrogen on titanium plate surface when Titanium board is heated to 300 DEG C；And it is heated to
Oxygen can be absorbed at 400 DEG C；It is heated to absorbing nitrogen at 600 DEG C, so the back-protective of titanium alloy welding just seems extremely heavy
Will, if welding point inhales the impurity elements such as aerobic, nitrogen, hydrogen, the plasticity for causing connector and toughness are drastically declined.At present, compare
Cover method and cold plate method are dragged in common welding back of the body guard method, drag cover method to be mainly used for some complex weld paths and some straight welding lines
Situation about cannot meet the requirements, the drawback is that protection is insufficient, cooling effect is poor；Cold plate method is slotted among cold plate, groove
The copper pipe ventilation protection of interior plug punching, this method have two drawbacks：First, insufficient, the back side of protection gas covering often occurs
The problem of severe oxidation, can not play reliable and stable protective effect；Second, the it sometimes appear that feelings that air copper tube is welded
Condition.
The defects of to solve present in above-mentioned cold plate method, application publication number are the Chinese invention patent Shen of CN105269123A
Please《The welder and welding method of a kind of titanium-alloy thin-plate》A kind of titanium alloy welding back-protective method is disclosed, belongs to cold
Plate law areas, its core are to make to form back of weld full of the argon gas flowed in U-type groove and protect by one-way ventilating mode,
But there are following defect for this method：Since argon gas density ratio air is big, flowing is that waveform is presented in unlimited U-type groove,
Even if wave crest portions can make welding plate back be paved with gas, but what wave trough portion was involved in is air entirely, so the part is unable to butt welding
Play corresponding protective effect in the seam back side；In addition, this method has certain limitation, the straight welding line of rule is suitable only for,
And mainly for titanium-alloy thin-plate.
The content of the invention
First technical problem to be solved by this invention is the present situation for the prior art, there is provided a kind of simple in structure
Titanium alloy welding carries on the back protective device, to realize the high quality of titanium alloy, stablize and weld, prevents titanium alloy from occurring in welding process
Oxidation, and this method is suitable for various regular and irregular weld seam.
Second technical problem to be solved by this invention is the present situation for the prior art, there is provided one kind application has above-mentioned
Titanium alloy welding carries on the back the welding method of protective device.
Technical solution is used by the present invention solves above-mentioned first technical problem：A kind of titanium alloy welding back of the body protection dress
Put, including cold plate, groove be provided with cold plate, it is characterised in that：Gas shield module can be assembled by being equipped with groove, described to assemble
Gas shield module includes being provided thereon among portion and is penetrated through from its one end to other end of first groove, arranged on first ditch
The second groove in the outside of the two side walls of groove, and multiple through holes of the first groove and second groove are connected, second ditch
The both ends of groove are connected to ventilating joint, to connect back of the body protective gas.
In such scheme, the gas shield module of assembling is the structures such as flat type, L-type or arc, different structure
Assemble gas shield module and assembling can be freely combined flat-bent weld seam, right angle welding seam or curved welding seam etc. are not advised with realizing
The then back of the body protection of weld seam.
As an improvement, the ventilating joint include air inlet and connect the air inlet two gas outlets, it is described two go out
Gas port connects the second groove that can assemble gas shield module both sides respectively.
Improve again, the ventilating joint and the groove that gas shield module is fixed on the cold plate by fluid sealant can be assembled
It is interior.
Temperature for welding is produced is transmitted on cold plate rapidly, and cold plate is radiated rapidly, it is preferred that the cold plate
For copper plate, thickness >=25mm of the copper plate.
As an improvement, a diameter of 2-3mm of the through hole, the distance between two neighboring through hole is 8-15mm.
Technical solution is used by the present invention solves above-mentioned second technical problem：One kind application has above-mentioned titanium alloy to weld
Connect the welding method of back of the body protective device, it is characterised in that include the following steps：
(1) titanium alloy welding plate is loaded on cold plate, the first ditch of gas shield module can be assembled on weld seam alignment cold plate
Groove；
(2) ventilating joint connection the back of the body protective gas, ventilate to the both ends of second groove, the back of the body protective gas even into
In second groove, and entered by through hole in first groove and back of the body protection is carried out to weld seam；
(3) welding gun welds weld seam by torch neck.
In such scheme, welded using argon tungsten-arc welding mode；The protective gas of welding gun uses argon gas；Carry on the back protective gas
Using argon gas.
To further improve welding quality, as an improvement, when the weld seam is backing welding, welding current 210-230A,
Back of the body shield gas flow rate is 30-35L/min, and the flow of welding gun protective gas is 20-30L/min, speed of welding 100-
120mm/min；When the weld seam welds for filling, welding current 180-200A, back of the body shield gas flow rate is 20-25L/min, weldering
The flow of rifle protective gas is 20-30L/min, speed of welding 90-120mm/min；When the weld seam is cosmetic welding, welding electricity
It is 20-25L/min to flow for 180-190A, back of the body shield gas flow rate, and the flow of welding gun protective gas is 20-30L/min, welding speed
Spend for 70-100mm/min.
Compared with prior art, the advantage of the invention is that：The present invention can assemble gas shield by being set on cold plate
Module, ventilates at the both ends that can assemble gas shield module so that and back of the body protective gas can uniformly be flowed out from second groove, and
Entered by through hole in first groove, protection air film is formed in first groove, ensures to play continuous uniform to back of weld
Protection, face of weld quality can reach bright silver or gold by range estimation；Avoiding copper pipe ventilation in the prior art causes to ventilate
The situation that copper pipe is welded；, can be by varying the shape of gas shield module can be assembled since use can assemble gas shield module
Shape and size, by cold plate of different shapes and can assemble gas shield module with the sealed connection of building blocks assembled, it is possible to achieve right
The available gas protection of many special-shaped weld seams such as flat-bent weld seam, right angle welding seam or curved welding seam.
Brief description of the drawings
Fig. 1 is cold plate and the structure diagram of assembling gas shield module in the embodiment of the present invention one；
Fig. 2 is the structure diagram of assembling gas shield module in Fig. 1；
Fig. 3 is the structure diagram of ventilating joint in the embodiment of the present invention one；
Fig. 4 is cold plate and the structure diagram of assembling gas shield module in the embodiment of the present invention two；
Fig. 5 is cold plate and the structure diagram of assembling gas shield module in the embodiment of the present invention three.
Fig. 6 is that the titanium alloy welding of the embodiment of the present invention two carries on the back protective device and the titanium alloy welding back of the body guarantor in embodiment one
Structure diagram after protection unit assembling.
Embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
Embodiment one：
As shown in Figures 1 to 3, a kind of titanium alloy welding back of the body protective device, cold plate 1 use the purple of 400mm × 400mm × 25mm
Copper coin, medium line cut out groove 11, assembling gas shield module 2 are equipped with groove 11, in the present embodiment, this can
Assembled gas shield module 2 is the flat type strip of a 400mm × 20mm × 20mm, and flat type strip both ends are respectively cut away
20mm × 20mm × 20mm be used for place ventilating joint 3, be provided among the top of flat type strip a 360mm × 6mm ×
The first groove 21 of 6mm, the outside of the two side walls of first groove 21 are respectively provided with the second groove 22 of 360mm × 3mm × 3mm,
The through hole X for connecting second groove 22 and first groove 21 is provided between second groove 22 and first groove 21, in the present embodiment, is led to
The aperture of hole X is 2mm, and the distance between two neighboring through hole X is 8mm, specifically refers to Fig. 2；As shown in figure 3, ventilating joint 3 wraps
Include an air inlet 31 and connect two gas outlets 32 of air inlet 31, which connects flat type strip two respectively
The second groove 22 of side；2 pieces of ventilating joint 3 and assembling gas shield mould are fixed on cold plate 1 with fluid sealant.
During welding, the TC4 titanium alloy welding plates of 20mm thickness are opened into double V-shaped grooves, are loaded on cold plate 1, weld seam alignment first
Groove 21；The connection back of the body protective gas of air inlet 31 of ventilating joint 3, ventilates the both ends of second groove 22, back of the body protection gas
Body enters in first groove 21 even into second groove 22, and by through hole X, and the back of the body protective gas of first groove 21 is welding
Stitch in not flow regime on direction, gas the sprawling by continuous uniform on vertical weld direction, form protection air film, it is right
Lasting protective effect is played at the back side of welding titanium alloy plate, prevents the backside oxide during titanium alloy welding；Using tungsten electrode
Argon arc welding mode is welded, the protective gas that welding gun uses for purity 99.999% high-purity argon；Welding procedure is：During backing welding,
Welding current is 210A, and back of the body shield gas flow rate is 35L/min, and the flow of welding gun protective gas is 25L/min, and speed of welding is
100mm/min；During filling weldering, welding current 180A, back of the body shield gas flow rate is 20L/min, the flow of welding gun protective gas
For 25L/min, speed of welding 90mm/min；During cosmetic welding, welding current 180A, back of the body shield gas flow rate is 20L/min,
The flow of welding gun protective gas is 25L/min, speed of welding 70mm/min.
Face of weld quality range estimation between the welding passage of the present embodiment and in whole process reaches bright silver, welding point
Strength factor be 0.98, welding point elongation be 13.2%.
Embodiment two：
As shown in figure 4, a kind of titanium alloy welding back of the body protective device, cold plate 1 use the red copper of 400mm × 400mm × 25mm
Plate, medium line cut out groove 11, assemble assembling gas shield module 2 in groove 11, in the present embodiment, this can be assembled
Formula gas shield module 2 is the L-type structure module that section is 20mm × 20mm, L-type structure module both ends respectively cut away 20mm ×
20mm × 20mm is used to place ventilating joint 3, and the structure of L-type structure module is roughly the same with embodiment 1, and difference lies in this implementation
In example, the aperture of through hole X is 2mm, and the distance between two neighboring through hole X is 10mm；The structure and ventilating joint 3 of ventilating joint 3
The mode being assembled to assembling gas shield module 2 on cold plate 1 is identical with embodiment one.
During welding, the TC4 titanium alloy welding plates of 15mm thickness are opened into double V-shaped grooves, are loaded on cold plate 1, weld seam alignment first
Groove 21；The connection back of the body protective gas of air inlet 31 of ventilating joint 3, ventilates the both ends of second groove 22；Using tungsten electrode
Argon arc welding mode is welded, the protective gas that welding gun uses for purity 99.999% high-purity argon；Welding procedure is：During backing welding,
Welding current is 230A, and back of the body shield gas flow rate is 30L/min, and the flow of welding gun protective gas is 30L/min, and speed of welding is
120mm/min；During filling weldering, welding current 200A, back of the body shield gas flow rate is 25L/min, the flow of welding gun protective gas
For 20L/min, speed of welding 120mm/min；During cosmetic welding, welding current 190A, back of the body shield gas flow rate is 25L/
Min, the flow of welding gun protective gas is 20L/min, speed of welding 100mm/min.
Face of weld quality range estimation between the welding passage of the present embodiment and in whole process reaches bright silver, welding point
Strength factor be 0.97, welding point elongation be 13.0%.
Embodiment three：
As shown in figure 5, its structure is roughly the same with embodiment one with welding procedure, difference lies in assembling for the present embodiment
Formula gas shield module 2 is the camber construction module that section is 20mm × 20mm, it can be achieved that being protected to the available gas of arc-shaped welding seam
Shield.
Face of weld quality range estimation between the welding passage of the present embodiment and in whole process reaches bright silver, welding point
Strength factor be 0.95, welding point elongation be 9.8%.
The titanium alloy welding back of the body protective device of the present invention can carry out assembling assembling according to weld shape, when weld seam is flat-face fillet weld
During seam, the titanium alloy welding back of the body protective device in embodiment one can be combined with the titanium alloy welding back of the body protective device of embodiment two
Assembling, realizes the available gas protection to right angle welding seam, and concrete structure refers to Fig. 6；When weld seam is straight-bent weld seam, can incite somebody to action
Titanium alloy welding back of the body protective device in embodiment one combines assembling with the titanium alloy welding back of the body protective device in embodiment three, real
Now the available gas of straight-bent weld seam is protected；, can be by the titanium alloy welding in multiple embodiments three when weld seam is curved welding seam
Back of the body protective device is assembled, and realizes the available gas protection to curved welding seam.
Certainly for other special-shaped weld seams, effective gas shield can also be realized by other combinations.
Claims (9)
1. a kind of titanium alloy welding carries on the back protective device, including cold plate, groove is provided with cold plate, it is characterised in that：It is equipped with groove
Gas shield module can be assembled, the gas shield module of assembling includes being provided thereon among portion and penetrated through from its one end to another
The first groove of outer one end, the second groove arranged on the outside of the two side walls of the first groove, and connect the first groove and
Multiple through holes of second groove, the both ends of the second groove are connected to ventilating joint, to connect back of the body protective gas.
2. titanium alloy welding according to claim 1 carries on the back protective device, it is characterised in that：It is described to assemble gas shield mould
Block is the structure such as flat type, L-type or arc, and different structure assembles gas shield module assembling can be freely combined to realize pair
The back of the body protection of the irregular weld seams such as flat-bent weld seam, right angle welding seam or curved welding seam.
3. titanium alloy welding according to claim 1 carries on the back protective device, it is characterised in that：The ventilating joint includes air inlet
Mouthful and connect two gas outlets of the air inlet, described two gas outlets connect respectively described can assemble gas shield module both sides
Second groove.
4. titanium alloy welding according to claim 3 carries on the back protective device, it is characterised in that：The ventilating joint and it can assemble
Gas shield module is fixed on by fluid sealant in the groove of the cold plate.
5. titanium alloy welding according to claim 1 carries on the back protective device, it is characterised in that：The cold plate is copper plate, should
Thickness >=25mm of copper plate.
6. titanium alloy welding according to claim 1 carries on the back protective device, it is characterised in that：A diameter of 2- of the through hole
3mm, the distance between two neighboring through hole is 8-15mm.
A kind of welding method of titanium alloy welding back of the body protective device 7. application is had the right described in 1~6 any claim of requirement, it is special
Sign is, includes the following steps：
(1) titanium alloy welding plate is loaded on cold plate, the first groove of gas shield module can be assembled on weld seam alignment cold plate；
(2) ventilating joint connection back of the body protective gas, ventilates the both ends of second groove, and back of the body protective gas is even into second
In groove, and entered by through hole in first groove and back of the body protection is carried out to weld seam；
(3) welding gun welds weld seam by torch neck.
8. welding method according to claim 7, it is characterised in that：Welded using argon tungsten-arc welding mode；The guarantor of welding gun
Shield gas uses argon gas；Back of the body protective gas uses argon gas.
9. welding method according to claim 7, it is characterised in that：When the weld seam is backing welding, welding current is
210-230A, back of the body shield gas flow rate are 30-35L/min, and the flow of welding gun protective gas is 20-30L/min, and speed of welding is
100-120mm/min；When the weld seam welds for filling, welding current 180-200A, back of the body shield gas flow rate is 20-25L/
Min, the flow of welding gun protective gas is 20-30L/min, speed of welding 90-120mm/min；When the weld seam is cosmetic welding,
Welding current is 180-190A, and back of the body shield gas flow rate is 20-25L/min, and the flow of welding gun protective gas is 20-30L/min,
Speed of welding is 70-100mm/min.
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| CN201711053077.5A CN107931793B (en) | 2017-11-01 | 2017-11-01 | Titanium alloy welding back protection device and welding method |
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| CN201711053077.5A CN107931793B (en) | 2017-11-01 | 2017-11-01 | Titanium alloy welding back protection device and welding method |
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| CN107931793A true CN107931793A (en) | 2018-04-20 |
| CN107931793B CN107931793B (en) | 2021-09-14 |
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| CN108672934A (en) * | 2018-04-25 | 2018-10-19 | 西安飞机工业（集团）有限责任公司 | A kind of gas shield device of titanium alloy conduit laser welding and guard method |
| CN110977120A (en) * | 2019-12-25 | 2020-04-10 | 安徽应流铸业有限公司 | Tool design method for preventing argon arc welding from causing oxidation of back surface of test plate |
| CN111069739A (en) * | 2019-12-31 | 2020-04-28 | 西安西工大超晶科技发展有限责任公司 | Manual argon arc welding test method for low-cost titanium alloy material |
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| CN112975122A (en) * | 2021-03-04 | 2021-06-18 | 南昌航空大学 | Welding gas protection device, laser wire filling welding system and welding method |
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| CN108672934A (en) * | 2018-04-25 | 2018-10-19 | 西安飞机工业（集团）有限责任公司 | A kind of gas shield device of titanium alloy conduit laser welding and guard method |
| CN110977120A (en) * | 2019-12-25 | 2020-04-10 | 安徽应流铸业有限公司 | Tool design method for preventing argon arc welding from causing oxidation of back surface of test plate |
| CN111069739A (en) * | 2019-12-31 | 2020-04-28 | 西安西工大超晶科技发展有限责任公司 | Manual argon arc welding test method for low-cost titanium alloy material |
| CN112620940A (en) * | 2020-12-02 | 2021-04-09 | 北京航星机器制造有限公司 | Flexible laser welding gas protection device and welding method |
| CN112975122A (en) * | 2021-03-04 | 2021-06-18 | 南昌航空大学 | Welding gas protection device, laser wire filling welding system and welding method |
| CN112975122B (en) * | 2021-03-04 | 2023-03-24 | 南昌航空大学 | Welding gas protection device, laser wire filling welding system and welding method |
| CN113547190A (en) * | 2021-08-10 | 2021-10-26 | 内蒙古第一机械集团股份有限公司 | Gas protection device and process method for welding TC4 titanium alloy plate |
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