CN107738026A - A kind of titanium method for welding pipeline and device - Google Patents
A kind of titanium method for welding pipeline and device Download PDFInfo
- Publication number
- CN107738026A CN107738026A CN201711163236.7A CN201711163236A CN107738026A CN 107738026 A CN107738026 A CN 107738026A CN 201711163236 A CN201711163236 A CN 201711163236A CN 107738026 A CN107738026 A CN 107738026A
- Authority
- CN
- China
- Prior art keywords
- welding
- cover body
- argon
- groove
- titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 124
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000010936 titanium Substances 0.000 title claims abstract description 35
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052786 argon Inorganic materials 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 24
- 239000010949 copper Substances 0.000 claims description 24
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000007547 defect Effects 0.000 claims description 11
- 230000003647 oxidation Effects 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000012459 cleaning agent Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000002932 luster Substances 0.000 claims description 5
- 230000003019 stabilising effect Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 241000826860 Trapezium Species 0.000 claims description 3
- 238000009958 sewing Methods 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 229910001566 austenite Inorganic materials 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 210000003739 neck Anatomy 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241000208340 Araliaceae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 241001124569 Lycaenidae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 229910010340 TiFe Inorganic materials 0.000 description 1
- 229910010336 TiFe2 Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
-
- 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
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention discloses a kind of titanium method for welding pipeline and device, is related to Welding Technology and Equipment.A kind of titanium method for welding pipeline, step are：（1）It is prepared by groove：Using plasma cut；（2）Preweld cleaning：Groove and each 50mm scopes surfaces externally and internally in both sides are cleared up first by without iron material；（3）Welding preparation：Wlding room Shi Du≤60%；Purity of argon >=99.999%, Han Shui Liang≤50mg/m3；（4）Welding equipment：Direct-flow argon-arc welder；Ventilation type welding gun；6 ㎜ plastic flexible pipe argon delivery lines；（5）Group pair and tack welding；（6）Welding：Welding torch keeps 75 °~85 ° angles with weldment, and welding wire keeps 10 °~15 ° fixtures with weldment；（7）Welding Testing.The present invention can significantly improve welding quality, shorten the duration, reduce cost, improve efficiency of construction.
Description
Technical field
The present invention relates to Welding Technology and Equipment, and in particular to a kind of titanium method for welding pipeline and device.
Background technology
Titanium is a kind of active metal, has good decay resistance, in oxidisability, neutrality and the medium for having chlorion
In, its corrosion resistance is better than stainless steel.Due to decay resistance and mechanical property good possessed by titanium, therefore changing
The industries such as work, medicine are widely used.
The oxygen and nitrogen dissolved in titanium can play obvious invigoration effect, but plasticity can reduce, and hydrogen can make titanium brittle.It is in normal temperature
It is lower to generate fine and close oxide-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, hydrogen is quickly inhaled more than 300 DEG C, more than 600 DEG C quick oxygen uptakes, more than 700 DEG C 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 present invention have developed one kind and be exclusively used in titanium
The welding method and welding equipment of pipeline.
The content of the invention
It is an object of the invention to provide a kind of titanium method for welding pipeline.
It is a further object to provide a kind of titanium pipeline welding device.
The present invention is achieved by the following technical solutions：
A kind of titanium method for welding pipeline, step are：
（1）It is prepared by groove：Using plasma cut, the position of oxidation stain is removed using sanding machine, polishing interruption is carried out, and is kept away
Exempt from groove face because crossing thermo-color, silvery white metallic luster is presented in groove face after polishing；
（2）Preweld cleaning：First by oxide-film, the burr that groove and each 50mm scopes surfaces externally and internally in both sides are cleared up without iron material
And surface defect, then cleaned using cleaning agent, finally cleaned using contton cloth；
（3）Welding preparation：Wlding room relative humidity Ying≤60%；Welding wire surface is clean, non-oxidation color；Welding gas shield
Purity of argon >=99.999%, Han Shui Liang≤50mg/m3；
（4）Welding equipment：It is more than from high-frequency arc strike, the direct-flow argon-arc welder that stabilising arc performance is good, easy to adjust, power
300A；Electric current≤150A ventilation type welding gun；6 ㎜ plastic flexible pipes are as argon delivery lines；
（5）Group pair and tack welding：During wall thickness identical pipe fitting group pair, inwall is concordant, and wall thickness is not to be exceeded in unfitness of butt
10%, and it is not more than 1mm, tack weld 5~10mm of length, highly 2/3 no more than wall thickness；
（6）Welding：Welding torch and weldment keep 75 °~85 ° angles, and welding wire and weldment keep 10 °~15 ° fixtures, and welding wire is along molten bath
Molten bath is sent into front end, and protective cover moves with welding gun in welding process, and the fire end of filler wire is all the time in the protection of argon gas
Under, when sewing up head more than 350 DEG C, ventilation protection；
（7）Welding Testing：Weld width is no more than bevelled edge 2mm, 0~1.5mm of weld reinforcement per side.
Further, step 1）When prepared by described groove, the wall thickness of titanium tube is 4mm, gap 3-4mm, root face 0-1mm,
Bevel angle 55-65o.
Step 2）Groove and both sides are cleared up using austenitic stainless steel wires brush.
Step 2）Described cleaning agent is acetone or absolute ethyl alcohol.
Step 6）In welding process, weld seam molten bath is protected using torch neck gas injection, and weld seam back uses the water soluble paper
Gas-filled protective is blocked, more than 400 DEG C of heat affected area welding heat affected zone is protected using protective cover.
It is a further object of the present invention to provide a kind of a kind of titanium pipeline welding device for being used to complete the above method, including
Cover body, airway tube, dissipate gas net；Described cover body is that the top that copper coin makes is rectangular configuration, and bottom is the cover body of arcuate structure；
Described airway 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；Described scattered gas net is more than 2 layers, and laying is fixed in the cover body of airway tube bottom.
Further, described cover body is the copper cover body that 2-3mm thickness copper coin makes, described to avoid iron pollution
Airway tube is the ㎜ of φ 6 copper pipe.
Described cover body is up-narrow and down-wide trapezium structure, and the protection gas that can be preferably is protected solder side.
Described scattered gas net is the copper mesh for opening up 150 mesh number holes thereon of 2-5 layers.
Residing environment, welding quality have a significant impact during welding of the present invention, and a large amount of objectionable impurities are contained in flue dust, this
A little impurity are readily transitioned among molten bath and weld seam, form weld defect, especially operating area and iron pollution be present, in titanium weld seam
Iron, due to generate TiFe and TiFe2Brittle phase, substantially reduce welding point comprehensive mechanical property, and reduce the resistance to of titanium
Corrosive nature, weld crack is produced when serious, to avoid titanium tube road from being contaminated during welding, construction site uses as far as possible
Dustless, smokeless, clean special welding place, avoid being deposited in Same Site with carbon steel or low alloy steel material, process,
Relative air humidity welding quality also has an impact, and easily forms stomata when humidity is larger in weld seam, and air should be kept relative
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（Typically≤150A）, the latter is for high current welding for a long time（General ＞
150A）, present invention preferably employs ventilation type welding gun；Argon delivery lines should use 6 ㎜ plastic flexible pipes, should not be inhaled with rubber hose etc.
Wet materials；Titanium welding wire should meet GB/T3623-2007 regulation, welding wire surface should clean, non-oxidation color, should not have crackle,
Peeling, scabbing and the defects of be mingled with；The argon gas of welding gas shield meets GB/T4842-2006 regulation, and purity of argon is not
Less than 99.999%, water content is not more than 50mg/m3.
Because titanium has very high affinity to oxygen, hydrogen, nitrogen, easily cause the reduction of welding point plasticity, oxidation stain, institute
Inside to weld seam molten bath, pipeline（Weld seam back）And more than 400 DEG C of surface welding heat affected zone should carry out strict gas and protect
Shield, molten bath protection is protected by torch neck gas injection, inside pipeline（Weld seam back）Gas-filled protective is blocked using the water soluble paper,
More than 400 DEG C of heat affected area is protected by Thermal protection using protective cover, and protective cover is using the making of 2 ~ 3 ㎜ sheet coppers, to avoid iron
Pollution, box inner bottom part lead to the ㎜ of φ 6 perforate copper pipe, as air guide, and lay 150 mesh or so 2 ~ 5 layers of copper mesh, reach dispersed
The effect of protective gas.
Groove is prepared preferentially using machining, during using plasma cut, should be used the position of whole oxidation stain
Sanding machine is all removed, and progresss should be interrupted during polishing, and speed and strength is appropriate, avoid groove face from being polished because crossing thermo-color
Silvery white metallic luster is presented in groove face afterwards, and it is unqualified purple or blueness such as occur.Groove cleaning instrument must be nothing
Iron material, the instrument 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 oxide-film, burr and the surface defect of weldment groove and each 50mm scopes 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.
It should accomplish that inwall is concordant when group pair is with tack welding, when wall thickness identical pipe or pipe fitting group pair, unfitness of butt is not
The 10% of wall thickness should be exceeded, and be not more than 1mm, tack welding should use welds identical welding material and welding procedure with formal, determines
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, it is found that defect will eliminate in time.
During titanium pipeline welding, welding torch should keep 75 °~85 ° angles with weldment, and the angle between welding wire and weldment is kept as far 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 move in welding process,
The fire end of filler wire should be remained under the protection of argon gas, welding wire end must not be removed into argon gas protection zone；Welding gun
During swing, frequency is low, and the amplitude of oscillation is unsuitable excessive；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, avoid tungsten electrode from being contacted with weldment or welding wire and cause tungsten inclusion, go out
It should immediately stop welding during existing tungsten inclusion, can continue welding after eliminating defect；Welding wire must not expose in an atmosphere immediately after blow-out,
It should be taken out when weld seam departs from and protected；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 present invention is according to the characteristic to titanium, weldability analysis, and the strict quality control to whole welding process, weld bond
First-time qualification rate reaches 99%, can significantly improve welding quality, shortens the duration, reduces cost, improves efficiency of construction.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1；
Fig. 2 is the structural representation of embodiment 2；
In figure：1- cover bodies, 2- airway tubes, 3- dissipate gas net.
Embodiment
The present invention is further detailed with reference to specific embodiment, it is to be understood that these embodiments are only used
In the explanation present invention rather than limitation the scope of the present invention.Those skilled in the art make to the present invention on the basis of the present invention
Various changes or modification, equally all should fall within protection scope of the present invention.
Embodiment 1
A kind of titanium method for welding pipeline, step are：
（1）It is prepared by groove：Using plasma cut, the wall thickness of titanium tube is 4mm, gap 3-4mm, root face 0-1mm, bevel angle
55-65o, the position of oxidation stain is removed using sanding machine, polishing interruption is carried out, and avoids groove face from being beaten because crossing thermo-color
Silvery white metallic luster is presented in groove face after mill；
（2）Preweld cleaning：First by oxide-film, the burr that groove and each 50mm scopes surfaces externally and internally in both sides are cleared up without iron material
And surface defect, then cleaned using washes of absolute alcohol agent, finally cleaned using contton cloth；
（3）Welding preparation：Wlding room relative humidity Ying≤60%；Welding wire surface is clean, non-oxidation color；Welding gas shield
Purity of argon >=99.999%, Han Shui Liang≤50mg/m3；
（4）Welding equipment：It is more than from high-frequency arc strike, the direct-flow argon-arc welder that stabilising arc performance is good, easy to adjust, power
300A；Electric current≤150A ventilation type welding gun；6 ㎜ plastic flexible pipes are as argon delivery lines；
（5）Group pair and tack welding：During wall thickness identical pipe fitting group pair, inwall is concordant, and wall thickness is not to be exceeded in unfitness of butt
10%, and it is not more than 1mm, tack weld 5~10mm of length, highly 2/3 no more than wall thickness；
（6）Welding：Welding torch and weldment keep 75 °~85 ° angles, and welding wire and weldment keep 10 °~15 ° fixtures, and welding wire is along molten bath
Welding pool is sent into front end, and weld seam molten bath is protected using torch neck gas injection, and weld seam back is using water soluble paper closure inflation
Protection, when more than 400 DEG C of heat affected area is more than 350 DEG C, ventilation protection, welding heat affected zone is welded using protective cover protection
During protective cover moved with welding gun, the fire end of filler wire is all the time under the protection of argon gas；
Protective cover therein is as shown in figure 1, including cover body, airway tube, dissipate gas net；Described cover body makes for 2-3mm thickness copper coin
Copper cover body, top is rectangular configuration, and bottom is arcuate structure, and airway tube is the ㎜ of φ 6 copper pipe, and gas is uniformly opened up on body
Hole, copper pipe are fixed on the upper end of cover body inner space, and end is fixed on outside cover body and is connected with air supply system, and it is 2 layers to dissipate gas net, its
On open up 150 mesh number holes, laying is fixed in the cover body of airway tube bottom；
（7）Welding Testing：Weld width is no more than bevelled edge 2mm, 0~1.5mm of weld reinforcement per side.
Embodiment 2
A kind of titanium method for welding pipeline, step are：
（1）It is prepared by groove：Using plasma cut, the wall thickness of titanium tube is 4mm, gap 3-4mm, root face 0-1mm, bevel angle
55-65o, the position of oxidation stain is removed using sanding machine, polishing interruption is carried out, and avoids groove face from being beaten because crossing thermo-color
Silvery white metallic luster is presented in groove face after mill；
（2）Preweld cleaning：The oxygen of groove and each 50mm scopes surfaces externally and internally in both sides is cleared up first by austenitic stainless steel wires brush
Change film, burr and surface defect, then cleaned using acetone cleaning agent, finally cleaned using contton cloth；
（3）Welding preparation：Wlding room relative humidity Ying≤60%；Welding wire surface is clean, non-oxidation color；Welding gas shield
Purity of argon >=99.999%, Han Shui Liang≤50mg/m3；
（4）Welding equipment：It is more than from high-frequency arc strike, the direct-flow argon-arc welder that stabilising arc performance is good, easy to adjust, power
300A；Electric current≤150A ventilation type welding gun；6 ㎜ plastic flexible pipes are as argon delivery lines；
（5）Group pair and tack welding：During wall thickness identical pipe fitting group pair, inwall is concordant, and wall thickness is not to be exceeded in unfitness of butt
10%, and it is not more than 1mm, tack weld 5~10mm of length, highly 2/3 no more than wall thickness；
（6）Welding：Welding torch and weldment keep 75 °~85 ° angles, and welding wire and weldment keep 10 °~15 ° fixtures, and welding wire is along molten bath
Welding pool is sent into front end, and weld seam molten bath is protected using torch neck gas injection, and weld seam back is using water soluble paper closure inflation
Protection, when more than 400 DEG C of heat affected area is more than 350 DEG C, ventilation protection, welding heat affected zone is welded using protective cover protection
During protective cover moved with welding gun, the fire end of filler wire is all the time under the protection of argon gas；
Protective cover therein is as shown in Fig. 2 including cover body, airway tube, dissipate gas net；Described cover body makes for 2-3mm thickness copper coin
Up-narrow and down-wide trapezium structure copper cover body, top is rectangular configuration, and bottom is arcuate structure, and airway tube is the ㎜'s of φ 6
Copper pipe, uniformly opens up stomata on body, and copper pipe is fixed on the upper end of cover body inner space, and end is fixed on that cover body is outer to be with supply
System connection, it is 5 layers to dissipate gas net, opens up 150 mesh number holes thereon, and laying is fixed in the cover body of airway tube bottom；
（7）Welding Testing：Weld width is no more than bevelled edge 2mm, 0~1.5mm of weld reinforcement per side.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, it is included within the scope of the present invention.
Claims (9)
1. a kind of titanium method for welding pipeline, it is characterised in that step is：
（1）It is prepared by groove：Using plasma cut, the position of oxidation stain is removed using sanding machine, polishing interruption is carried out, and is kept away
Exempt from groove face because crossing thermo-color, silvery white metallic luster is presented in groove face after polishing；
（2）Preweld cleaning：First by oxide-film, the burr that groove and each 50mm scopes surfaces externally and internally in both sides are cleared up without iron material
And surface defect, then cleaned using cleaning agent, finally cleaned using contton cloth；
（3）Welding preparation：Wlding room relative humidity Ying≤60%；Welding wire surface is clean, non-oxidation color；Welding gas shield
Purity of argon >=99.999%, Han Shui Liang≤50mg/m3；
（4）Welding equipment：It is more than from high-frequency arc strike, the direct-flow argon-arc welder that stabilising arc performance is good, easy to adjust, power
300A；Electric current≤150A ventilation type welding gun；6 ㎜ plastic flexible pipes are as argon delivery lines；
（5）Group pair and tack welding：During wall thickness identical pipe fitting group pair, inwall is concordant, and wall thickness is not to be exceeded in unfitness of butt
10%, and it is not more than 1mm, tack weld 5~10mm of length, highly 2/3 no more than wall thickness；
（6）Welding：Welding torch and weldment keep 75 °~85 ° angles, and welding wire and weldment keep 10 °~15 ° fixtures, and welding wire is along molten bath
Molten bath is sent into front end, and protective cover moves with welding gun in welding process, and the fire end of filler wire is all the time in the protection of argon gas
Under, when sewing up head more than 350 DEG C, ventilation protection；
（7）Welding Testing：Weld width is no more than bevelled edge 2mm, 0~1.5mm of weld reinforcement per side.
A kind of 2. titanium method for welding pipeline according to claim 1, it is characterised in that step 1）It is prepared by described groove
When, the wall thickness of titanium tube is 4mm, gap 3-4mm, root face 0-1mm, bevel angle 55-65o.
A kind of 3. titanium method for welding pipeline according to claim 1 or 2, it is characterised in that step 2）Use austenite
Stainless steel wire brush clears up groove and both sides.
A kind of 4. titanium method for welding pipeline according to claim 1 or 2, it is characterised in that step 2）Described cleaning
Agent is acetone or absolute ethyl alcohol.
A kind of 5. titanium method for welding pipeline according to claim 1 or 2, it is characterised in that step 6）In welding process,
Weld seam molten bath is protected using torch neck gas injection, and weld seam back is using water soluble paper closure gas-filled protective, 400 DEG C of heat affected area
Protected using protective cover above welding heat affected zone.
6. the device for completing claim 1-5 any one methods, it is characterised in that including cover body, airway tube, dissipate gas
Net；Described cover body is that the top that copper coin makes is rectangular configuration, and bottom is the cover body of arcuate structure；Described airway tube is it
On uniformly open up the copper pipe of stomata, copper pipe is fixed on the upper end of cover body inner space, and end is fixed on outside cover body；Described scattered gas
Net is more than 2 layers, and laying is fixed in the cover body of airway tube bottom.
7. device according to claim 6, it is characterised in that described cover body is the copper cover that 2-3mm thickness copper coin makes
Body, described airway tube are the ㎜ of φ 6 copper pipe.
8. device according to claim 6, it is characterised in that described cover body is up-narrow and down-wide trapezium structure.
9. device according to claim 6, it is characterised in that described scattered gas net opens up 150 mesh numbers thereon for 2-5 layers
The copper mesh in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163236.7A CN107738026A (en) | 2017-11-21 | 2017-11-21 | A kind of titanium method for welding pipeline and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163236.7A CN107738026A (en) | 2017-11-21 | 2017-11-21 | A kind of titanium method for welding pipeline and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107738026A true CN107738026A (en) | 2018-02-27 |
Family
ID=61238948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711163236.7A Pending CN107738026A (en) | 2017-11-21 | 2017-11-21 | A kind of titanium method for welding pipeline and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107738026A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238485A (en) * | 2019-05-14 | 2019-09-17 | 江苏圣珀新材料科技有限公司 | A kind of welding method of tubular material inside weld |
| CN110328435A (en) * | 2019-06-11 | 2019-10-15 | 中国人民解放军第五七一九工厂 | A kind of titanium alloy small space welding method |
| CN112427770A (en) * | 2020-11-11 | 2021-03-02 | 广西天正钢结构有限公司 | Pipe girth welding process |
| CN112658440A (en) * | 2020-12-14 | 2021-04-16 | 航天海鹰(哈尔滨)钛业有限公司 | Method for eliminating back extra height by welding titanium alloy small-diameter pipe |
| CN114029596A (en) * | 2021-12-10 | 2022-02-11 | 中国化学工程第六建设有限公司 | Titanium pipeline welding method |
| CN114045481A (en) * | 2021-11-24 | 2022-02-15 | 永胜机械工业（昆山）有限公司 | Method for removing iron ions on titanium surface before heat treatment of titanium composite steel plate equipment |
| CN114054902A (en) * | 2021-11-30 | 2022-02-18 | 中国化学工程第六建设有限公司 | Titanium palladium alloy pipeline welding method |
| CN117464129A (en) * | 2023-12-25 | 2024-01-30 | 内蒙金属材料研究所 | Welding method for improving high-strength toughness of 5R60 medium plate welded joint |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201471099U (en) * | 2009-08-24 | 2010-05-19 | 中国石化集团第十建设公司 | Welding protective cover for titanium pipeline of argon-shielded tungsten arc welding gun |
| CN101804500A (en) * | 2010-04-01 | 2010-08-18 | 中国建筑第七工程局有限公司 | Titanium tube welding process |
| CN102069274A (en) * | 2009-11-24 | 2011-05-25 | 中国石化集团第十建设公司 | Bottom sealing twin arc welding method of large-caliber industrial pure titanium pipelines |
| CN102266998A (en) * | 2011-07-25 | 2011-12-07 | 中国石化集团第四建设公司 | Automatic argon tungsten-arc welding method for small-bore titanium pipeline |
| CN102554415A (en) * | 2011-12-13 | 2012-07-11 | 江西洪都航空工业集团有限责任公司 | Protective device of titanium alloy part argon arc welding welded joint and welding method thereof |
| CN104084672A (en) * | 2014-06-26 | 2014-10-08 | 中船澄西远航船舶（广州）有限公司 | Titanium pipe welding process of seawater lift pump system |
| CN105127559A (en) * | 2015-09-25 | 2015-12-09 | 兰州兰石重型装备股份有限公司 | Argon shielding device for titanium material welding and usage method of device |
| CN205254320U (en) * | 2015-12-08 | 2016-05-25 | 中石化南京工程有限公司 | Titanium is argon gas cooling protection cover for sealing of tube |
| CN207479809U (en) * | 2017-11-21 | 2018-06-12 | 山西焦化股份有限公司 | A kind of titanium pipeline welding device |
-
2017
- 2017-11-21 CN CN201711163236.7A patent/CN107738026A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201471099U (en) * | 2009-08-24 | 2010-05-19 | 中国石化集团第十建设公司 | Welding protective cover for titanium pipeline of argon-shielded tungsten arc welding gun |
| CN102069274A (en) * | 2009-11-24 | 2011-05-25 | 中国石化集团第十建设公司 | Bottom sealing twin arc welding method of large-caliber industrial pure titanium pipelines |
| CN101804500A (en) * | 2010-04-01 | 2010-08-18 | 中国建筑第七工程局有限公司 | Titanium tube welding process |
| CN102266998A (en) * | 2011-07-25 | 2011-12-07 | 中国石化集团第四建设公司 | Automatic argon tungsten-arc welding method for small-bore titanium pipeline |
| CN102554415A (en) * | 2011-12-13 | 2012-07-11 | 江西洪都航空工业集团有限责任公司 | Protective device of titanium alloy part argon arc welding welded joint and welding method thereof |
| CN104084672A (en) * | 2014-06-26 | 2014-10-08 | 中船澄西远航船舶（广州）有限公司 | Titanium pipe welding process of seawater lift pump system |
| CN105127559A (en) * | 2015-09-25 | 2015-12-09 | 兰州兰石重型装备股份有限公司 | Argon shielding device for titanium material welding and usage method of device |
| CN205254320U (en) * | 2015-12-08 | 2016-05-25 | 中石化南京工程有限公司 | Titanium is argon gas cooling protection cover for sealing of tube |
| CN207479809U (en) * | 2017-11-21 | 2018-06-12 | 山西焦化股份有限公司 | A kind of titanium pipeline welding device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238485A (en) * | 2019-05-14 | 2019-09-17 | 江苏圣珀新材料科技有限公司 | A kind of welding method of tubular material inside weld |
| CN110328435A (en) * | 2019-06-11 | 2019-10-15 | 中国人民解放军第五七一九工厂 | A kind of titanium alloy small space welding method |
| CN110328435B (en) * | 2019-06-11 | 2021-10-19 | 中国人民解放军第五七一九工厂 | Titanium alloy narrow space welding method |
| CN112427770A (en) * | 2020-11-11 | 2021-03-02 | 广西天正钢结构有限公司 | Pipe girth welding process |
| CN112658440A (en) * | 2020-12-14 | 2021-04-16 | 航天海鹰(哈尔滨)钛业有限公司 | Method for eliminating back extra height by welding titanium alloy small-diameter pipe |
| CN112658440B (en) * | 2020-12-14 | 2024-03-05 | 航天海鹰(哈尔滨)钛业有限公司 | Method for eliminating back surplus height by welding titanium alloy small-diameter pipe |
| CN114045481A (en) * | 2021-11-24 | 2022-02-15 | 永胜机械工业（昆山）有限公司 | Method for removing iron ions on titanium surface before heat treatment of titanium composite steel plate equipment |
| CN114045481B (en) * | 2021-11-24 | 2023-07-25 | 永胜机械工业（昆山）有限公司 | Method for removing iron ions on surface of titanium before heat treatment of titanium composite steel plate equipment |
| CN114054902A (en) * | 2021-11-30 | 2022-02-18 | 中国化学工程第六建设有限公司 | Titanium palladium alloy pipeline welding method |
| CN114029596A (en) * | 2021-12-10 | 2022-02-11 | 中国化学工程第六建设有限公司 | Titanium pipeline welding method |
| CN117464129A (en) * | 2023-12-25 | 2024-01-30 | 内蒙金属材料研究所 | Welding method for improving high-strength toughness of 5R60 medium plate welded joint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107738026A (en) | A kind of titanium method for welding pipeline and device | |
| CN104759743B (en) | A kind of nickel-based alloy pipe argon arc welding process | |
| CN102009251B (en) | Full-position welding method for pipeline by full-automatic external welding machine | |
| KR20090040251A (en) | Apparatus and method for welding | |
| CN102814575B (en) | Deep-groove narrow-gap manual argon arc sealing welding method | |
| CN102266998A (en) | Automatic argon tungsten-arc welding method for small-bore titanium pipeline | |
| JP2009107017A (en) | Method for controlling weld quality | |
| CN112171016B (en) | Austenitic stainless steel NBG welding process | |
| CN103878470A (en) | Tungsten electrode argon arc welding process of dissimilar materials of titanium alloy and nickel alloy | |
| CN108015394A (en) | A kind of stainless steel tube welding method | |
| CN107009003A (en) | The Rework Technics of Condenser Titanium Tube | |
| CN207479809U (en) | A kind of titanium pipeline welding device | |
| CN202701575U (en) | Double-faced dual-arc welding device of pipe root layer | |
| CN107570849A (en) | A kind of titanium alloy support ring melting welding gas protective drawing cover and guard method | |
| CN108746934A (en) | A kind of natural gas transmission method for welding pipeline | |
| CN106825877A (en) | stainless steel square tube welding process | |
| CN104588849A (en) | Consumable electrode mixed gas shielded arc welding process for steel plate with thickness of 4 mm | |
| CN104816075B (en) | A kind of space division system alumal pipeline argon arc welding method | |
| CN203778936U (en) | Device for welding high-nitrogen austenite stainless steel medium plate | |
| CN106425059A (en) | Anti-spatter welding method and system of automatic welding gun | |
| CN102922099A (en) | Welding method of variable manifold for locomotive | |
| CN108620716A (en) | A kind of welding procedure of reburner pipeline | |
| CN104588851A (en) | Consumable electrode mixed gas shielded arc welding process for steel plate with thickness below 3 mm | |
| Mathers | Welding of Titanium & Its Alloys | |
| CN206981964U (en) | A kind of argon arc welding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180227 |
|
| RJ01 | Rejection of invention patent application after publication |