CN109047998A - A kind of method of lifting system pipeline argonaut welding forming quality and production efficiency - Google Patents
A kind of method of lifting system pipeline argonaut welding forming quality and production efficiency Download PDFInfo
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- CN109047998A CN109047998A CN201810925271.6A CN201810925271A CN109047998A CN 109047998 A CN109047998 A CN 109047998A CN 201810925271 A CN201810925271 A CN 201810925271A CN 109047998 A CN109047998 A CN 109047998A
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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
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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
- B23K9/32—Accessories
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Abstract
The present invention provides the methods of a kind of lifting system pipeline argonaut welding forming quality and production efficiency, comprising: processes a technique aperture to process conduit；To process conduit, gas cylinder pressure inlet and system pipeline oil removing, drying, polishing；To gas cylinder pressure inlet and process conduit argonaut welding, to system pipeline and process conduit argonaut welding；The technique aperture of argonaut welding deblocking technology conduit；To system pipeline weld seam and weldering being sealed property of the solder joint detection of process pipeline plug-hole.The present invention solves titanium alloy cylinder pressure inlet and system pipeline argonaut welding connects quality and efficiency; solves back side ventilation protection problem; it is long to lead to the displacement gas period with traditional gas cylinder; using process pipeline back side ventilation tooling; only need 10min; it improves aerospace craft titanium alloy cylinder pressure inlet and preceding efficiency, welding process and welding condition optimization is welded in the ventilation of the system pipeline argonaut welding back side, realize that quality of weld seam molding accurately controls.
Description
Technical field
The present invention relates to aerospace craft titanium alloy cylinder pressure inlets and system pipeline argonaut welding, and in particular, to
It is a kind of efficiently realize the protection of pipeline back side part argon gas and accurate control titanium alloy pipeline argonaut welding quality of weld seam molding and
The method of production efficiency.
Background technique
Traditional titanium alloy cylinder gas displacement method realizes that pressure inlet and the protection of system pipeline back side argon gas, argon gas are preparatory
Time swap is long, and quality of weld seam molding is unstable, back of weld oxidation often occurs, and weldquality is unable to satisfy Q/Fc0608I grades
It is required that.Weldering leakage forming is uneven, and weldering leakage oxidation particle object causes fifth wheel hidden danger.
According to conduit pressure-bearing working condition requirement, weld seam is subjected to the weld seam leakproofness of " 23MPa helium inspection, 5min is kept not reveal "
Examination.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of lifting system pipeline argonaut welding formings
The method of quality and production efficiency.
The method of a kind of the lifting system pipeline argonaut welding forming quality and production efficiency that provide according to the present invention, packet
Include following steps:
Aperture procedure of processing: a technique aperture is processed to process conduit；
Weld preparation step: to process conduit, gas cylinder pressure inlet and system pipeline oil removing, drying, polishing；
Argon arc welding step: to gas cylinder pressure inlet and process conduit argonaut welding, automatic to system pipeline and process conduit
Argon arc welding；
The stifled weldering step of technique aperture: the technique aperture of argonaut welding deblocking technology conduit；
Weld seam detection step: the weldering to weld seam, system pipeline and process conduit between gas cylinder pressure inlet and process conduit
Seam and stifled weldering being sealed property of the solder joint detection of process conduit fabrication hole, lens examination appearance of weld surface quality, X-ray inspection
Look into weld seam internal soundness.
Preferably, include: to gas cylinder pressure inlet and process conduit argonaut welding
Spot welding positioning step: gas cylinder pressure inlet and process conduit place to be welded carry out spot welding positioning；
Tungsten electrode processing and part to be welded pipeline installation steps: processing tungsten electrode tip, selection are matched with tracheal cannula mouth outer diameter
The fixture block clamping tooling of conjunction installs tungsten electrode, fixes after adjusting tungsten electrode tip height；Part to be welded pipeline is placed in pipe soldering turret, accurate adjustment
Part to be welded pipeline placement location makes tungsten electrode tip be directed at part to be welded pipeline seam crossing；Locking tube soldering turret briquetting, part to be welded is fixed
In pipe soldering turret；
Step is protected before argon arc welding: logical using back of weld before gas cylinder pressure inlet and process conduit argonaut welding welding
Gas localised protection tooling leads to 3~5min of argon gas in advance；
Argonaut welding connects step: the decaying of peak point current subangle, it is ensured that and appearance of weld is uniform, face of weld amount of recess≤
0.1mm；
Postwelding part to be welded pipeline inner cavity lags logical argon gas and protects step: after part to be welded pipeline weld seam argonaut welding forming,
The process pipeline back side lags logical 3~5min of argon gas；
Quality of weld seam molding checking step: checking face of weld, internal forming quality, lens examination weld seam at
Shape surface quality, X-ray examination weld seam internal soundness.
Preferably, include: to system pipeline and process conduit argonaut welding
Spot welding positioning step: system pipeline and process conduit place to be welded carry out spot welding positioning；
Part to be welded pipeline is mounted on the step in pipe soldering turret: due to system pipeline and process conduit weld size and gas
Bottle pressure inlet is consistent with process conduit size, same tungsten electrode point when keeping with gas cylinder pressure inlet and process conduit argonaut welding
End height and fixture block clamping tooling, it is only necessary to which accurate adjustment part to be welded position, tungsten electrode tip are directed at part to be welded seam crossing, part to be welded fixed
In pipe soldering turret；
Part to be welded pipeline inner cavity leads to argon gas protection step in advance before welding: the system pipeline back side leads to argon gas in advance, specific to ventilate
Time is determined by system pipeline length；
Argonaut welding connects step: the decaying of peak point current subangle, it is ensured that and appearance of weld is uniform, face of weld amount of recess≤
0.1mm；
Postwelding part to be welded pipeline inner cavity lags logical argon gas and protects step: after welding, the process pipeline back side lag logical argon gas 3~
5min；
Quality of weld seam molding checking step: referring to Q/Fc0608 " satellite propulsion system titanium or titanium alloy conduit welding technique
Condition " I grades require to check face of weld, internal forming quality.Lens examination appearance of weld surface quality, X-ray
Check weld seam internal soundness.
Preferably, the stifled weldering step of technique aperture includes:
Accurate adjustment part to be welded position, tungsten electrode tip are aligned to Welding aperture, and the pipeline back side leads to argon gas, automatic argon arc in advance
Weldering, the technique aperture of deblocking technology conduit；Stifled weldering quality of welding spot inspection, including pad surface and internal soundness are carried out to technique aperture
It checks.
Preferably, weld preparation step includes:
Mechanical grinding is carried out to the docking of process conduit, gas cylinder pressure inlet and system pipeline place end face to be welded, surfaces externally and internally
To visible metallochrome, each weldment end face to be welded degree 0.05 perpendicular to the axis guarantees part to be welded butt-joint clearance≤0.10mm.
Preferably, the tungsten electrode diameter of phi 1mm, tungsten electrode tip are 30 °, and tungsten electrode tip is located at right above workpiece place to be welded,
Apart from workpiece 0.45~0.55mm of place surface to be welded.
Preferably, the welding step specifically: optimizing welding process parameter (weldment pipeline outer diameter Φ 8mm): welding speed
Spend 2rpm, background current 8A, pulsewidth 40%, frequency 50Hz, 5 sections of decaying of peak point current point, peak point current and angle difference
It is 40A (72 °), 37A (120 °), 35A (144 °), 33A (108 °) and 32A (72 °), using at the uniform velocity subangle damping peak electric current
Pulse lap welding bond pattern, it is ensured that appearance of weld is uniform, and weldering leakage is controllable.
Preferably, face of weld quality examination include: appearance of weld it is uniform, it is smooth, bright, do not allow to aoxidize, sting
Side, face of weld amount of recess≤0.1mm, weldering leakage uniformly, pass through logical ball test；Through X-ray examination inside weld seam, do not allow gas
Hole, crackle are mingled with and lack of penetration defect；Weldquality meets Q/Fc0608I grades of requirements.
It preferably, include: welding peak point current 80A, background current 8A, pulsewidth to the welding parameter of technique aperture argon arc welding
40%, frequency 50Hz, action time 1.5S, fabrication hole plug-hole electric arc ending section peak point current decay to 40A.
Preferably, the weld seam detection step includes: and is sealed according to model system sealing index request to weld seam
Property test, weld seam is subjected to 23MPa helium, keeps 5min, do not leak.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, the present invention solves aerospace craft titanium alloy cylinder pressure inlet and system pipeline argonaut welding appearance of weld
Quality stability problem, peak point current subangle decaying, it is ensured that appearance of weld is uniform, face of weld amount of recess≤0.1mm, weld seam
Quality meets Q/Fc0608I grades of requirements, and is examined by corresponding leakproofness；
2, led to traditional gas cylinder, displacement gas mode realizes that pipeline inner cavity argon gas is protected, gas cylinder ventilation displacement number 3~5
It is secondary, weld preceding gas cylinder, system pipeline leads to, 8~48h of displacement gas time.Traditional system leads to displacement gas number and the time depends on gas
Bottle volume and system pipeline length and layout.The present invention solves titanium alloy cylinder pressure inlet and connects with system pipeline argonaut welding
Quality and efficiency are ventilated tooling using the process pipeline back side, and system pipeline inner cavity leads in advance after argon gas only needs 8~10min before welding,
It can welding.The present invention solves system pipeline back side ventilation problem, shorten aerospace craft titanium alloy cylinder pressure inlet with
System pipeline inner cavity leads to the argon gas time before system pipeline argonaut welding is welded, and improves production efficiency；
3, pipeline spot welding positioning tool in the present invention, it is ensured that conduit unfitness of butt joint≤0.05mm to be welded, gap≤0.10mm are mentioned
High weld is accepted rate；
4, tungsten electrode height adjusts tooling in the present invention, and convenient tungsten electrode tip height positioning can control tungsten electrode height
0.45~0.55mm；
5, pipeline fixture block clamping tooling uses the first, second part to be welded (outer diameter Φ 8mm) 8 fixture block of outer wall and Φ in the present invention
Inner hole is sturdy, realizes part to be welded is fixed, welding current circuit is connected and part to be welded is cooling and other effects；
6, welding condition (weldment pipeline outer diameter Φ 8mm) in the present invention: speed of welding 2rpm, background current 8A, arteries and veins
It is wide by 40%, frequency 50Hz, points of 5 sections decaying of peak point current, peak point current and angle be respectively 40A (72 °), 37A (120 °),
35A (144 °), 33A (108 °) and 32A (72 °), using the pulse lap welding bond pattern of at the uniform velocity subangle damping peak electric current, really
It is uniform to protect appearance of weld, weldering leakage is controllable, and postwelding conduit is tested by through ball test；
7, peak point current 80A, background current 8A, pulsewidth 40%, frequency fabrication hole plug-hole Welding parameter in the present invention: are welded
Rate 50Hz, action time 1.5S, fabrication hole plug-hole electric arc ending section peak point current decay to 40A.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is process conduit technique aperture schematic diagram in the present invention；
Fig. 2 is aerospace craft titanium alloy, gas cylinder pressure inlet and process conduit connection schematic diagram in the present invention；
Fig. 3 is that logical argon gas tooling is shown in advance for gas cylinder pressure inlet and the preceding back side of process conduit argonaut welding welding in the present invention
It is intended to；
Fig. 4 is process conduit, gas cylinder pressure inlet and process conduit in the present invention, the signal of system pipeline weld and HAZ mounted welder
Figure；
Fig. 5 is to clamp in the present invention with the matched pipe soldering turret of gas cylinder pressure inlet, process conduit and system pipeline dimensions
Fixture block tooling schematic diagram；
Fig. 6 is that tungsten electrode height adjusts tooling schematic diagram in the present invention；
Fig. 7 is that process conduit, gas cylinder pressure inlet and process conduit, system pipeline weld joint welding process parameter are shown in the present invention
It is intended to；
Fig. 8 is that process conduit, gas cylinder pressure inlet and process conduit, system pipeline weld joint welding process process are shown in the present invention
It is intended to；
Fig. 9 is step flow chart of the invention；
Figure 10 is gas cylinder pressure inlet of the invention and process conduit argonaut welding flow chart；
Figure 11 is system pipeline of the invention and process conduit argonaut welding flow chart；
Figure 12 is the technique aperture flow chart of argonaut welding deblocking technology conduit of the invention.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
As shown in Figures 1 to 12, a kind of lifting system pipeline argonaut welding forming quality for providing according to the present invention and
The method of production efficiency, includes the following steps:
Step 1: process conduit processes Φ 0.7mm technique aperture；
Step 2: process conduit, gas cylinder pressure inlet and system pipeline inner wall and surface degreasing；
Step 3: part drying to be welded or hot blast drying；
Step 4: to gas cylinder pressure inlet, process conduit and system pipeline 3 part place's mechanical grindings to be welded to be welded；
Step 5: gas cylinder pressure inlet and process conduit argonaut welding；
Step 5.1: gas cylinder pressure inlet and process conduit place to be welded carry out spot welding positioning；
Step 5.2: processing tungsten electrode tip；
Step 5.3: the fixture block clamping tooling of selection and the cooperation of tracheal cannula mouth outer diameter installs tungsten electrode, adjusts tungsten electrode
Tip height, accurate adjustment part to be welded position, tungsten electrode tip are directed at part to be welded seam crossing, part to be welded are clamped in pipe soldering turret；
Step 5.4: before gas cylinder pressure inlet and process conduit argonaut welding welding, being protected using back of weld part argon gas
Tooling leads to 3~5min of argon gas in advance；
Step 5.5: welding process: peak point current subangle decaying, it is ensured that appearance of weld is uniform, face of weld amount of recess≤
0.1mm；
Step 5.6: after welding, the pipeline back side lags logical 3~5min of argon gas；
Step 5.7: quality of weld seam molding inspection includes face of weld and internal soundness inspection.Face of weld quality examination packet
Include: weldquality meets Q/Fc0608I grades of requirements；Appearance of weld is uniform, smooth, is silvery white in color, and does not allow undercut, weld seam
Surface indentation amount≤0.1mm, weldering leakage are uniform；Through X-ray examination inside weld seam, do not allow stomata, crackle, be mingled with it is lack of penetration etc.
Defect；
Step 6: system pipeline and process conduit argonaut welding；
Step 6.1: system pipeline and process conduit place to be welded carry out spot welding positioning；
Step 6.2: accurate adjustment part to be welded position, tungsten electrode tip are directed at part to be welded seam crossing, part to be welded are then fixed on pipe
In soldering turret；
Step 6.3: the pipeline back side leads to 5~8min of argon gas in advance, and specific duration of ventilation is determined by system pipeline length；
Step 6.4~6.6: being soldered to welding inspection, with step 5.5~5.7；
Step 7: argonaut welding deblocking technology conduit Φ 0.7mm technique aperture；
Step 7.1: accurate adjustment part to be welded position, tungsten electrode tip are aligned to Welding aperture；
Step 7.2: with step 6.3；
Step 7.3: argonaut welding, deblocking technology conduit Φ 0.7mm technique aperture；
Step 7.4: with step 5.7；
Step 7.5: the stifled weldering quality examination of technique aperture includes pad surface and internal soundness inspection.The inspection of pad surface quality
Look into includes: that pad surface shapes light, do not allow to aoxidize；Solder joint does not allow stomata, crackle, is mingled with and does not weld through X-ray examination
The defects of saturating；Weldquality meets Q/Fc0608I grades of requirements.
Step 8: weld seam performing leak test: according to model system sealing index request, being sealed property of weld seam being tested.
By taking certain model titanium alloy cylinder connects system pipeline leakproofness index as an example, weld seam is subjected to 23MPa helium, keeps 5min, no
Leakage.
Further, the step 1 specifically: process conduit dimensions is the same as gas cylinder pressure inlet and system pipeline, technique
Length of pipe and fabrication hole Working position are by system bay section arrangement space, pipe soldering turret grasping part and the pipeline back side ventilation direction etc.
Factor codetermines.
In more detail, the step 4 specifically: 3 parts to be welded docking place end face to be welded, surfaces externally and internally are carried out mechanical
It is polishing to visible metallochrome.Each weldment end face to be welded degree 0.05 perpendicular to the axis, guarantees part to be welded butt-joint clearance≤0.10mm.
Further, the step 5.1 specifically: positioning wedged block hole size is matched with part to be welded outer diameter, in positioning card
Under block limit, the weld seam of process conduit (the first to-be-welded pieces) and gas cylinder pressure inlet (the second weldment) symmetrically positions at 2 points, misalignment
Amount≤0.05mm, gap≤0.10mm.
More specifically, the step 5.2 specifically: fixture block clamping tooling, material are high-temperature titanium alloy 7715D, can be held
It is examined by 600 DEG C of working environments, specific strength is high, grips part to be welded, and multiple welding repeats experience heating, cooling procedure, no
It is easily-deformable.Fixture block design feature: inner holeWith part to be welded catheter outer diameterSurface is sturdy, and conducting welding current returns
Road realizes that welding process heat input is stablized；Width 0.4mm wire cutting slot, welding process part to be welded thermal deformation adaptively adjust, disappear
Except fixture block restraint stress, realize appearance of weld uniformly, flawless defect, guarantee quality of weld seam molding.Tungsten electrode diameter of phi 1mm, point
End is 30 °.When tungsten electrode scaling loss, change in shape requires to avoid the change of shape again with special equipment polishing tungsten electrode tip to 30 °
Change causes arc shape to change, and electric arc stable appearance realizes that welding process heat input is stablized.
Further, the step 5.3 specifically: tungsten electrode tip is located at right above workpiece place to be welded, waits for apart from workpiece
0.45~0.55mm of surface at weldering.Tungsten electrode tip height positioning tool accurately controls tungsten electrode tip from part to be welded surface distance
0.45~0.55mm.Φ d and the same size of part to be welded conduit Φ d in tungsten electrode height adjustment tooling；With tungsten electrode point
End height is contour, positions tungsten electrode height；When tungsten electrode altitude location finishes, tungsten electrode position is remained unchanged, until identical dimensions
Part to be welded welding finishes；The rectangular channel 2mmX1.5mm of tungsten electrode height adjustment tooling facilitates operator after tungsten electrode height determines
This tooling is taken out from pipe soldering turret.
The step 5.4 specifically: ventilation localised protection tooling in the process pipeline back side realizes that gas cylinder pressure inlet and technique are led
Back side part argon gas protection environment, effectively prevent during appearance of weld at tube seam, gas cylinder pressure inlet and the process conduit back side
Oxidation, weldquality are unable to satisfy Q/Fc0608I grades of requirements.
The step 5.5 specifically: optimizing welding process parameter (weldment pipeline outer diameter Φ 8mm): speed of welding 2rpm, base
It is worth electric current 8A, pulsewidth 40%, frequency 50Hz, 5 sections of decaying of peak point current point, peak point current and angle are 40A respectively
(72 °), 37A (120 °), 35A (144 °), 33A (108 °) and 32A (72 °), using the arteries and veins of at the uniform velocity subangle damping peak electric current
Rush lap welding bond pattern, it is ensured that appearance of weld is uniform, and weldering leakage is controllable.
The step 5.7 specifically: quality of weld seam molding inspection includes face of weld and internal soundness inspection.Face of weld
Quality examination include: appearance of weld it is uniform, it is smooth, bright, do not allow aoxidize, undercut, face of weld amount of recess≤
0.1mm, weldering leakage uniformly, pass through logical ball test.Through X-ray examination inside weld seam, do not allow stomata, crackle, be mingled with it is lack of penetration
The defects of；Weldquality meets Q/Fc0608I grades of requirements.
The step 7.3 specifically: welding peak point current 80A, background current 8A, pulsewidth 40%, frequency 50Hz, when effect
Between 1.5S, fabrication hole plug-hole electric arc ending section peak point current decay to 40A.
The step 8 specifically: weld seam performing leak test: according to model system sealing index request, weld seam is carried out
Performing leak test.By taking certain model titanium alloy cylinder connects system pipeline leakproofness index as an example, weld seam is subjected to 23MPa helium,
5min is kept, is not leaked.
With traditional gas cylinder is logical, displacement gas mode realizes that pipeline inner cavity argon gas is protected, gas cylinder ventilation displacement number 3~5 times,
Weld preceding gas cylinder, system pipeline leads to, 8~48h of displacement gas time.Traditional system leads to displacement gas number and time depending on gas cylinder appearance
Long-pending and system pipeline length and layout.The present invention solves titanium alloy cylinder pressure inlet and system pipeline argonaut welding connects quality
And efficiency, it is ventilated tooling using the process pipeline back side, system pipeline inner cavity leads in advance after argon gas only needs 8~10min before welding, can
Welding.The present invention solves system pipeline back side ventilation problem, shortens aerospace craft titanium alloy cylinder pressure inlet and system
System pipeline inner cavity leads to the argon gas time before pipeline argonaut welding is welded, and improves production efficiency；Tungsten electrode height adjusts tooling, to welded tube
Road positions the optimization design of mounted welder and Tube vice clamping fixture block tooling, accurately controls argonaut welding tungsten electrode height, technique
The spare parts to be welded such as conduit, gas cylinder pressure inlet and system pipeline place's assembly precision to be welded；Process conduit, gas cylinder pressure inlet and system
Pipeline welds entire process optimization, it is ensured that system pipeline inner cavity argon gas protection environment is stablized when each weld seam test weld, weld seam back
Face forming quality is good, and titanium alloy system pipeline welding process is avoided to aoxidize, is lack of penetration, prevents titanium alloy pipeline inner cavity from aoxidizing shape
System fifth wheel hidden danger is caused to occur at particulate matter；Welding condition optimization realizes that quality of weld seam molding accurately controls.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (10)
1. a kind of method of lifting system pipeline argonaut welding forming quality and production efficiency, which is characterized in that including as follows
Step:
Aperture procedure of processing: a technique aperture is processed to process conduit；
Weld preparation step: to process conduit, gas cylinder pressure inlet and system pipeline oil removing, drying, polishing；
Argon arc welding step: to gas cylinder pressure inlet and process conduit argonaut welding, to system pipeline and the automatic argon arc of process conduit
Weldering；
The stifled weldering step of technique aperture: the technique aperture of argonaut welding deblocking technology conduit；
Weld seam detection step: to the weld seam of weld seam, system pipeline and process conduit between gas cylinder pressure inlet and process conduit with
And stifled weldering being sealed property of the solder joint detection of process conduit fabrication hole.
2. the method for a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 1,
It is characterized in that, including: to gas cylinder pressure inlet and process conduit argonaut welding
Spot welding positioning step: gas cylinder pressure inlet and process conduit place to be welded carry out spot welding positioning；
Tungsten electrode processing and part to be welded pipeline installation steps: processing tungsten electrode tip, selection and the cooperation of tracheal cannula mouth outer diameter
Fixture block clamping tooling installs tungsten electrode, fixes after adjusting tungsten electrode tip height；Part to be welded pipeline is placed in pipe soldering turret, and accurate adjustment is to be welded
Part pipeline placement location makes tungsten electrode tip be directed at part to be welded pipeline seam crossing；Locking tube soldering turret briquetting, is fixed on pipe for part to be welded
In soldering turret；
Step is protected before argon arc welding: before gas cylinder pressure inlet and process conduit argonaut welding welding, using back of weld ventilation office
Portion's protecting tool set-up leads to 3~5min of argon gas in advance；
Welding step: peak point current subangle decaying, it is ensured that appearance of weld is uniform, face of weld amount of recess≤0.1mm；
Postwelding part to be welded pipeline inner cavity lags logical argon gas and protects step: after part to be welded pipeline weld seam argonaut welding forming, technique
The pipeline back side lags logical 3~5min of argon gas；
Quality of weld seam molding checking step: face of weld, internal forming quality are checked, lens examination appearance of weld table
Face quality, X-ray examination weld seam internal soundness.
3. the method for a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 1,
It is characterized in that, including: to system pipeline and process conduit argonaut welding
Spot welding positioning step: system pipeline and process conduit place to be welded carry out spot welding positioning；
Part to be welded pipeline installation steps: same tungsten electrode tip is high when keeping with gas cylinder pressure inlet and process conduit argonaut welding
Degree and fixture block clamping tooling, it is only necessary to which accurate adjustment part to be welded position, tungsten electrode tip are directed at part to be welded seam crossing, part to be welded are fixed on pipe
In soldering turret；
Step is protected before argon arc welding: the system pipeline back side leads to argon gas in advance, and specific duration of ventilation is determined by system pipeline length；
Welding step: peak point current subangle decaying, it is ensured that appearance of weld is uniform, face of weld amount of recess≤0.1mm；
Step is protected after argon arc welding: after welding, the process pipeline back side lags logical 3~5min of argon gas；
Quality of weld seam molding checking step: face of weld, internal forming quality are checked, lens examination appearance of weld table
Face quality, X-ray examination weld seam internal soundness.
4. the method for a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 1,
It is characterized in that, the stifled weldering step of technique aperture includes:
Accurate adjustment part to be welded position, tungsten electrode tip alignment to Welding aperture at, the pipeline back side in advance lead to argon gas, argonaut welding,
The technique aperture of deblocking technology conduit；Stifled weldering quality of welding spot inspection, including pad surface and internal soundness inspection are carried out to technique aperture
It looks into, lens examination appearance of weld surface quality, X-ray examination weld seam internal soundness.
5. the method for a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 1,
It is characterized in that, weld preparation step includes:
To the docking of process conduit, gas cylinder pressure inlet and system pipeline place end face to be welded, surfaces externally and internally is mechanical grinding to can
See metallochrome, each weldment end face to be welded degree 0.05 perpendicular to the axis guarantees part to be welded butt-joint clearance≤0.10mm.
6. the side of a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 2 or 3
Method, which is characterized in that the tungsten electrode diameter of phi 1mm, tungsten electrode tip are 30 °, and tungsten electrode tip is located at right above workpiece place to be welded, away from
Place surface 0.45~0.55mm to be welded from workpiece.
7. the method for a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 1,
It is characterized in that, the welding step specifically: optimizing welding process parameter (weldment pipeline outer diameter Φ 8mm): speed of welding
2rpm, background current 8A, pulsewidth 40%, frequency 50Hz, 5 sections of decaying of peak point current point, peak point current and angle are respectively
40A (72 °), 37A (120 °), 35A (144 °), 33A (108 °) and 32A (72 °), using at the uniform velocity subangle damping peak electric current
Pulse lap welding bond pattern, it is ensured that appearance of weld is uniform, and weldering leakage is controllable.
8. the side of a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 2 or 3
Method, which is characterized in that face of weld quality examination includes: that appearance of weld is uniform, smooth, bright, does not allow to aoxidize, sting
Side, face of weld amount of recess≤0.1mm, weldering leakage are uniform；Through X-ray examination inside weld seam, do not allow stomata, crackle, be mingled with and
Lack of penetration defect；Weldquality meets Q/Fc0608I grades of requirements.
9. the method for a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 4,
It is characterized in that, including: welding peak point current 80A, background current 8A, pulsewidth to the welding parameter of technique aperture argon arc welding
40%, frequency 50Hz, action time 1.5S, fabrication hole plug-hole electric arc ending section peak point current decay to 40A.
10. the method for a kind of lifting system pipeline argonaut welding forming quality and production efficiency according to claim 1,
It is characterized in that, the weld seam detection step includes: to be surveyed according to model system sealing index request to being sealed property of weld seam
Examination, weld seam are subjected to 23MPa helium, keep 5min, do not leak.
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