CN207479809U - A kind of titanium pipeline welding device - Google Patents
A kind of titanium pipeline welding device Download PDFInfo
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- CN207479809U CN207479809U CN201721560289.8U CN201721560289U CN207479809U CN 207479809 U CN207479809 U CN 207479809U CN 201721560289 U CN201721560289 U CN 201721560289U CN 207479809 U CN207479809 U CN 207479809U
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- cover body
- gas
- welding
- guide tube
- copper
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Abstract
The utility model discloses a kind of titanium pipeline welding device, is related to welding equipment.A kind of titanium pipeline welding device, including cover body, gas-guide tube, air-dispersing net；The cover body is that the top that copper coin makes is rectangular configuration, and bottom is the cover body of arcuate structure；The gas-guide tube is the copper pipe for uniformly opening up stomata thereon, and copper pipe is fixed on the upper end of cover body inner space, and end is fixed on outside cover body；The air-dispersing net is 2 layers or more, and laying is fixed in the cover body of gas-guide tube lower part.The utility model is simple in structure, safe to use, can significantly improve welding quality, reduces cost, improves construction efficiency.
Description
Technical field
The utility model is related to welding equipments, and in particular to a kind of titanium pipeline welding device.
Background technology
Titanium is a kind of active metal, has good corrosion resistance, in oxidisability, neutrality and the medium for having chlorion
In, corrosion resistance is better than stainless steel.Due to corrosion resistance good possessed by titanium and mechanical property, changing
The industries such as work, medicine are widely used.
The oxygen and nitrogen dissolved in titanium can play apparent invigoration effect, but plasticity can reduce, and hydrogen can make titanium brittle.It is in room temperature
It is lower to generate fine and close oxidation film with oxygen and keep high stability and corrosion resistance；Have at high temperature with oxygen, nitrogen, hydrogen, carbon
Very strong affinity, reaction speed is very fast, and in 300 DEG C or more quick suction hydrogen, 600 DEG C or more quick oxygen uptakes, 700 DEG C or more quick
Inhale nitrogen.A large amount of existing nitrogen, oxygen, hydrogen, make titanium weld seam become fragile, plasticity degradation in air.Therefore, ring around when titanium tube is welded
Border welding quality can produce a very large impact.
In order to ensure the welding quality of titanium tube and efficiency, it is ensured that Welding Safety, the utility model have developed one kind and be exclusively used in
The welding equipment of titanium pipeline.
Invention content
The purpose of this utility model is to provide a kind of titanium pipeline welding device.
The utility model is achieved through the following technical solutions：
A kind of titanium pipeline welding device, including cover body, gas-guide tube, air-dispersing net；The cover body is the top that copper coin makes
Portion is rectangular configuration, and bottom is the cover body of arcuate structure；The gas-guide tube is the copper pipe for uniformly opening up stomata thereon, and copper pipe is solid
The upper end of cover body inner space is scheduled on, end is fixed on outside cover body；The air-dispersing net is 2 layers or more, and laying is fixed on air guide
In the cover body of pipe lower part.
Further, the cover body is the copper cover body that 2-3mm thickness copper coin makes, described to avoid iron pollution
Gas-guide tube is the copper pipe of φ 6mm.
The cover body is up-narrow and down-wide trapezium structure, and the protection gas that can be preferably is protected welding surface.
The air-dispersing net is 2-5 layers of the copper mesh for opening up 150 mesh number holes thereon.
Residing environment, welding quality have a significant impact during the utility model welding, miscellaneous containing being largely harmful in flue dust
Matter, these impurity are readily transitioned in molten bath and weld seam, and forming weld defect, especially operating area, there are iron pollution, titaniums
Iron in weld seam, due to generating TiFe and TiFe2Brittle phase, substantially reduce welding point comprehensive mechanical property, and reduce
The corrosion resistance of titanium, generates weld crack when serious, for titanium tube road is avoided to be contaminated during welding, construction site is most
Amount uses dustless, smokeless, clean special welding place, avoids being deposited in Same Site with carbon steel or low alloy steel material
It puts, process, relative air humidity welding quality also has an impact, and easily forms stomata when humidity is larger in weld seam, should keep
Relative air humidity is below 90%.
Selection for welding equipment, it is good with high-frequency arc strike, stabilising arc performance that welding machine should be selected, and ginseng is welded in welding process
The direct-flow argon-arc welder that number is stable, easy to adjust, argon supply system is safe and reliable（Power is more than 300A）；Welding gun has ventilation type
With two kinds of water-cooled, the former is used for small current welding（Generally≤150A）, the latter is for high current welding for a long time（General ＞
150A）, the utility model is preferably using ventilation type welding gun；Argon delivery lines should use 6mm plastic flexible pipes, should not use rubber hose
Wait hygroscopic materials；Titanium welding wire should meet the regulation of GB/T3623-2007, and welding wire surface answers clean, non-oxidation color, should not have and split
Line, peeling, scabbing and the defects of be mingled with；The argon gas of welding gas shield meets the regulation of GB/T4842-2006, purity of argon
Not less than 99.999%, water content is not more than 50mg/m3.
Since titanium has oxygen, hydrogen, nitrogen very high affinity, it is easy to cause the reduction of welding point plasticity, oxidation stain, institute
Inside to weld seam molten bath, pipeline（Weld seam back）And 400 DEG C of surface or more welding heat affected zone should carry out stringent gas and protect
Shield, molten bath protection is by torch nozzle injection gas shield, inside pipeline（Weld seam back）Gas-filled protective is blocked using the water soluble paper,
400 DEG C of heat affected area or more is protected by Thermal protection using protective cover, and protective cover is made using 2 ~ 3mm sheet coppers, to avoid iron
It pollutes, bottom leads to the trepanning copper pipe of φ 6mm in box, as air guide, and is laid with 150 mesh or so 2 ~ 5 layers of copper mesh, reaches homodisperse
The effect of protective gas.
Groove is prepared preferentially using mechanical processing, during using plasma cut, should be used the position of entire oxidation stain
Sanding machine all removes, and when polishing should be interrupted progresss, and speed and strength is appropriate, and groove face be avoided to polish because crossing thermo-color
Silvery white metallic luster is presented in groove face afterwards, and it is unqualified purple or blue such as occur.Groove cleaning tool must be nothing
Iron material, the tool of cleaning should be special, and to keep the cleaning of used tool, preferably with machinery sides such as austenitic stainless steel wires brushes
Method removes oxidation film, burr and the surface defect of weldment groove and each 50mm ranges surfaces externally and internally in both sides, then using acetone or
Absolute ethyl alcohol is cleaned, and first dries moisture or impurity with contton cloth after being disposed, and remove and be attached to weldment surface
Cotton fiber is wiped, and prevents pollution of the cotton fiber to welding bead.
When group pair is with tack welding, when identical pipe of wall thickness or pipe fitting group pair, should accomplish that inner wall is concordant, and unfitness of butt is not
Should be more than the 10% of wall thickness, and no more than 1mm, tack welding should use the welding material and welding procedure identical with formally welding, fixed
Position fusion length is generally 5~10mm, highly 2/3 no more than wall thickness, and tack weld must not have crackle, stomata, tungsten inclusion and oxygen
The defects of changing discoloration finds that defect will be eliminated in time.
When titanium tube road welds, welding torch should keep 75 °~85 ° angles with weldment, and the angle between welding wire and weldment is kept as possible
At 10 °~15 °；Welding wire is rhythmically sent into molten bath along molten bath front end, and protective cover should follow welding gun closely and be moved in welding process,
The fire end of filler wire should be remained under the protection of argon gas, must not welding wire end be removed argon gas protection zone；Welding gun
During swing, frequency is low, and the amplitude of oscillation should not be too large；To continue ventilation protection at accidental current interruption and weld seam ending, until welding line joint
It is cooled to less than 350 DEG C；Electric arc should protect stabilization in welding process, and tungsten electrode is avoided to be contacted with weldment or welding wire and causes tungsten inclusion, is gone out
It should stop welding immediately during existing tungsten inclusion, can continue welding after eliminating defect；Welding wire must not be exposed to the atmosphere immediately after blow-out,
It should be taken out when weld seam is detached from and protects；The weld width of bead contour is no more than bevelled edge 2mm with every side and is advisable, more than weld seam
A height of 0~1.5mm.Face of weld must not have the defects of undercut, stomata, tungsten inclusion, crackle and incomplete fusion.
The utility model is simple in structure, safe to use, can significantly improve welding quality, reduces cost, improves construction effect
Rate.
Description of the drawings
Fig. 1 is the structure diagram of embodiment 1；
Fig. 2 is the structure diagram of embodiment 2；
In figure：1- cover bodies, 2- gas-guide tubes, 3- air-dispersing nets.
Specific embodiment
The utility model is further detailed with reference to specific embodiment, it is to be understood that these embodiments
It is merely to illustrate the utility model rather than limitation the scope of the utility model.Those skilled in the art are in the utility model base
The various changes or modification made on plinth to the utility model, should all equally fall within the scope of protection of the utility model.
Embodiment 1
A kind of titanium pipeline welding device as shown in Figure 1, including cover body, gas-guide tube, air-dispersing net；The cover body is 2-
The copper cover body that 3mm thickness copper coin makes, top are rectangular configuration, and bottom is arcuate structure, and gas-guide tube is the copper pipe of φ 6mm, is managed
Stomata is uniformly opened up on body, copper pipe is fixed on the upper end of cover body inner space, and end is fixed on outside cover body and is connect with air supply system,
Air-dispersing net is 2 layers, opens up 150 mesh number holes thereon, and laying is fixed in the cover body of gas-guide tube lower part.
Embodiment 2
A kind of titanium pipeline welding device as shown in Figure 2, including cover body, gas-guide tube, air-dispersing net；The cover body is 2-
The copper cover body for the up-narrow and down-wide trapezium structure that 3mm thickness copper coin makes, top is rectangular configuration, and bottom is arcuate structure, is led
Tracheae is the copper pipe of φ 6mm, uniformly opens up stomata on tube body, copper pipe is fixed on the upper end of cover body inner space, and end is fixed on
Cover body is outer to be connect with air supply system, and air-dispersing net is 5 layers, opens up 150 mesh number holes thereon, is laid with the cover body for being fixed on gas-guide tube lower part
It is interior.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
The equivalent structure or equivalent flow shift made using the utility model description is directly or indirectly used in other phases
The technical field of pass, is equally included in the patent within the scope of the utility model.
Claims (4)
1. a kind of titanium pipeline welding device, which is characterized in that including cover body, gas-guide tube, air-dispersing net；The cover body is copper coin
The top of making is rectangular configuration, and bottom is the cover body of arcuate structure；The gas-guide tube is the copper for uniformly opening up stomata thereon
Pipe, copper pipe are fixed on the upper end of cover body inner space, and end is fixed on outside cover body；The air-dispersing net is 2 layers or more, is laid with solid
It is scheduled in the cover body of gas-guide tube lower part.
2. the apparatus according to claim 1, which is characterized in that the cover body is the copper cover that 2-3mm thickness copper coin makes
Body, the gas-guide tube are the copper pipe of φ 6mm.
3. device according to claim 1 or 2, which is characterized in that the cover body is up-narrow and down-wide trapezium structure.
4. device according to claim 1 or 2, which is characterized in that the air-dispersing net is 2-5 layers and opens up 150 thereon
The copper mesh in mesh number hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721560289.8U CN207479809U (en) | 2017-11-21 | 2017-11-21 | A kind of titanium pipeline welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721560289.8U CN207479809U (en) | 2017-11-21 | 2017-11-21 | A kind of titanium pipeline welding device |
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| Publication Number | Publication Date |
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| CN207479809U true CN207479809U (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721560289.8U Active CN207479809U (en) | 2017-11-21 | 2017-11-21 | A kind of titanium pipeline welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738026A (en) * | 2017-11-21 | 2018-02-27 | 山西焦化股份有限公司 | A kind of titanium method for welding pipeline and device |
-
2017
- 2017-11-21 CN CN201721560289.8U patent/CN207479809U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738026A (en) * | 2017-11-21 | 2018-02-27 | 山西焦化股份有限公司 | A kind of titanium method for welding pipeline and device |
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