CN106425101A - Thin-walled air coolant guide tube connecting method - Google Patents
Thin-walled air coolant guide tube connecting method Download PDFInfo
- Publication number
- CN106425101A CN106425101A CN201611068717.5A CN201611068717A CN106425101A CN 106425101 A CN106425101 A CN 106425101A CN 201611068717 A CN201611068717 A CN 201611068717A CN 106425101 A CN106425101 A CN 106425101A
- Authority
- CN
- China
- Prior art keywords
- welding
- air coolant
- coolant tube
- thin
- walled
- 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
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/001—Turbines
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a thin-walled air coolant guide tube connecting method. The thin-walled air coolant guide tube connecting method comprises the following steps: polishing, cleaning and blow-drying connectors of thin-walled air coolant guide tubes; inserting a core of a welding fixture into a part from a run-off plate end, enabling a guide tube outline, at the run-off plate end, of the part to be parallel and level to a mark of the core, and placing in a groove of the welding fixture and clamping; clamping a laser welding head by using an industrial robot, and aligning a guiding light spot of a laser to a welded joint; running a procedure in an idle manner and observing the guiding light spot, and ensuring the guiding light spot to always cover the welded joint; welding of air coolant guide tubes: running a welding procedure to weld the air coolant guide tubes, wherein the diameter of a nozzle is 10 mm, and the distance from the nozzle to a welded surface is 4 mm; after welding is finished, immediately taking out the core, clamping the run-off plate end on jaw calipers, and withdrawing the part; and cleaning after welding. By the method, the welded joint with good forming quality and consistency can be obtained, shortcomings of welding missing, burning-through, main body burning and the like are avoided, meanwhile, welding deformation is controlled effectively, and profile precision of blade basins and blade backs of the air coolant guide tubes is guaranteed.
Description
Technical field
The present invention relates to a kind of aero-turbine part solder technology, specifically a kind of thin-walled air coolant tube are even
Connect method.
Background technology
Air coolant tube constitutes turbine part air flow circuit as the important component part of aero-turbine part
A part, with vital effect in turbine part cooling procedure.
Air coolant tube is special-shaped distorted-structure, and relative with same kind of parts, structure is increasingly complex；The arbitrary section of air coolant tube
In half moon；From outer shroud end to internal ring end, section distortion convergence.For ensure conduit air film hole group cooling effect and its with sky
The matching requirements of lobus cardiacus piece, the leaf basin of air coolant tube, blade back are respectively provided with strict type face control and require, type areal coordinate control points
More than 1000 points, the accuracy of manufacture requires high.
Air coolant tube thickness is only 0.3mm, after panel beating bending forming twice, forms closed housing by welding.
The weld seam of air coolant tube be matched curve, to blade back lateral deviation from；Welding face width is only 2.5～4.0mm, and one side is most
Little width is only 1.0～1.5mm.Tig Welding is typically adopted, it is allowed to is added welding wire, but is not allowed to connect using overlap joint
Head.Using tungsten argon arc soldering method carry out air coolant tube welding when there are the following problems：
(1) appearance of weld quality and concordance are poor, it is necessary to carry out postwelding reconditioning, and catheter interior is difficult to reconditioning, increased
Substantial amounts of cost of labor and manufacturing cycle；
(2) welding process is unstable, the defects such as weldering leakage, burn-through, main body burn easily occurs, and solder yield is low；
(3) thermal weld stress is big and uneven, and welding deformation is difficult to control to, and leaf basin, blade back type face precision are difficult to ensure that；
Need to explore a kind of good method of attachment of technique effect for this, effectively the problems referred to above are avoided, realize cold air and lead
The welding of pipe.
Content of the invention
For aero-engine thin-walled air coolant tube appearance of weld quality and concordance in prior art be poor, leaf basin, blade back
Type face precision be difficult to ensure that etc. not enough, problems to be solved by the invention be provide one kind avoid weldering leakage, burn, main body burn etc. lacks
Fall into, it is ensured that air coolant tube leaf basin, the thin-walled air coolant tube method of attachment of the type face precision of blade back.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
A kind of thin-walled air coolant tube method of attachment of the present invention, comprises the following steps：
Prepared by air coolant tube joint：Thin-walled air coolant tube joint is processed by shot blasting, removes remelted layer, splash, oxygen
Change layer, be carried out at part interface, welding face positive and negative and round-corner transition, dry up；
Air coolant tube Set and Positioning：By the core of weld jig by receiving in arc plate end insertion part, part is made to receive arc plate end
Conduit profile concordant with the line of core, be put in weld jig type groove, assembling clamping；Rise, receipts arc sheet separation is not more than
0.1mm；Main body weld gap local is not more than 0.15mm, grinds one's teeth or overlap before no visual weldering；
Teaching is scanned：Laser welding system is clamped using industrial robot, adjustment robot makes laser instrument defocusing amount, by laser
The guiding hot spot alignment weld seam of device；Air transport line program simultaneously observes guiding hot spot, it is ensured that guiding hot spot covers weld seam all the time；
Air coolant tube is welded：Nozzle diameter is 10mm, is 4mm away from welding face；Protective gas is Ar gas, is supplied gas before weldering in advance
Not less than 10s, postwelding delay protection is supplied gas 10s；Welding is without welding wire；After confirmation is errorless, operation welding procedure is led to cold air
Pipe is welded；
Remove fixture：After the completion of welding, take out core immediately and be clamped to arc plate end is received on tiger's jaw clamp, use yi word pattern
Screwdriver withstands part and receives arc plate, gently taps screw driver handle, exits part；
Postwelding is cleared up：Acetone being dipped with absorbent cotton or ethanol is cleared up to welding face, removes gold-plated smoked coated of weld seam.
Air coolant tube is welded, specially：Optical fiber laser power is 160～240W, and defocusing amount is+4～+8mm, welding speed
Spend for 6～12mm/s, laser power rising and falling time be；Coaxial protection, shielding gas flow is 15～30L/
min；
In teaching scanning step, choose arcing point, acnode and both intermediate points is received, programming fitting c-type curve.
Air coolant tube Set and Positioning, specially：Compression of outwarding winding knob, non-for part welding side is put into fixture type groove down
Interior；Adjustment insert position and angle, makes tail end contact with locating piece, the non-welding side of part is contacted with bottom locating piece；Screw pressure
Tight knob, closes weld seam；When weld seam interface starts contact, light and slow screws compression knob with adjustment assembly gap, with
When touch welding face with reduce weldering before grind one's teeth.
When weld seam local gap is less than 0.15mm, stops compression knob is screwed, and be corrected, before reducing weldering further
Grind one's teeth.
The invention has the advantages that and advantage：
1. application the inventive method carries out thin-walled air coolant tube welding, can obtain the good weldering of Forming Quality and concordance
Seam, it is to avoid the defect such as weldering leakage, burn-through, main body burn, while effectively control welding deformation, it is ensured that air coolant tube leaf basin, blade back
Type face precision.
2. the inventive method carries optical fiber laser automatic welding using industrial robot, it is achieved that 0.3mm thickness cold air is led
The welding of pipe；Stablize and low thermal weld stress, unique clamping process, reduce welding deformation to greatest extent, it is ensured that
Air coolant tube leaf basin, the face required precision of blade back type.
3. apply the inventive method, weld seam positive and negative smooth finish, uniformity, width be 0.8～1.0mm；From melting welding
Connect, weld seam positive and negative no reinforcement substantially, process without the need for reconditioning；Solderless leakage, burn or main body burn etc. defect.
4. the inventive method stable technical process, repeatability and adaptability good, solder yield of part volume up to
To 94%, can significantly shorten the manufacturing cycle, save manufacturing cost；Complete batch welding, daily teaching scanning is needed only by
Volume of production reaches 100～200.
Description of the drawings
Figure 1A is the thin-walled air coolant tube structural representation of the present invention；
Figure 1B is the A-A of Figure 1A to sectional view；
Fig. 2 is the air coolant tube clamping schematic diagram of the present invention.
Wherein, 1 is air coolant tube, and 2 is core, and 3 is bottom locating piece, and 4 is compression knob, and 5 is movable briquetting, and 6 is fixed
Position block, 7 be stationary positioned block, 8 be base, 9 for receive arc plate, 10 be weld seam, 11 be welding face, 12 be run-on tab.
Specific embodiment
With reference to Figure of description, the present invention is further elaborated.
The present embodiment is as shown in Figure 1A, 1B
(1) part situation
As shown in figure 1, being air coolant tube to be welded, raw material is the GH188 band of 0.3mm thickness, and cut is got the raw materials ready, through two
Secondary panel beating bending forming.Part plays, receives the width of arc plate and is 4mm, and length is more than 6mm.
(2) embodiment
Step one：Prepared by joint
Processed using mechanical polishing butt joint, removed weld seam interface, the cut remelting of welding face positive and negative
Layer and splash, oxide layer etc..Clear to carrying out at part interface, welding face positive and negative and round-corner transition using acetone or ethanol
Wash；After cleaning is finished, part is dried up with compressor gun.
Step 2：Air coolant tube Set and Positioning
As shown in Fig. 2 by the core 2 of weld jig by receiving in arc plate end insertion air coolant tube 1, making air coolant tube 1 receive arc
The conduit profile at plate end is concordant with the line of core 2；Compression of outwarding winding knob 4, non-for air coolant tube 1 welding side is put into fixture down
In type groove；Adjustment 2 position of core and angle, makes tail end contact with locating piece 6, the non-welding side of air coolant tube 1 and bottom locating piece 3
Contact；Compression knob 4 is screwed, makes weld seam 10 (as shown in Figure 1A, 1B) closure；When weld seam interface starts contact, light and slow
Compression knob 4 is screwed with adjustment assembly gap, while welding 11 is touched using rustless steel hand hammer grinding one's teeth before weldering to reduce；Weld seam office
When portion gap is less than 0.15mm, stops compression knob 4 is screwed, and be corrected with hand hammer, grind one's teeth before reducing weldering further.
Check clamping quality, it is desirable to as follows：Run-on tab 12,9 gap of receipts arc plate are not more than 0.1mm；Main body weld gap office
Portion is not more than 0.15mm, grinds one's teeth or overlap before no visual weldering.
Step 3：Teaching is scanned
Laser welding system is clamped using industrial robot, adjustment robot makes laser instrument defocusing amount for+6mm.By laser instrument
Guiding hot spot alignment weld seam, choose arcing point, receive acnode and both intermediate points, programming fitting c-type curve；Air transport line program is simultaneously
Observation guiding hot spot, it is ensured that guiding hot spot covers weld seam all the time, otherwise then chooses again intermediate point and finely tunes the starting the arc, receives acnode,
Until meeting the requirements.
Step 4：Air coolant tube is welded
With acetone or ethanol, welding face is carried out supplementing cleaning, technological parameter arranges as follows：Optical fiber laser power is
200W, it is 10mm/s that defocusing amount is+6mm, speed of welding, and laser power rising and falling time is 0.3s；Coaxial protection, protection
Throughput is 25L/min；Nozzle diameter is 10mm, away from welding face 4mm；Protective gas is Ar gas, and supply gas before weldering 10s in advance, weldering
Postpone the 10s that supplies gas afterwards；Welding is without welding wire.
After confirmation is errorless, operation welding procedure is welded to air coolant tube.
Step 5：Remove fixture
After the completion of welding, take out core immediately and the i.e. receipts arc plate end in big end is clamped on tiger's jaw clamp, use yi word pattern spiral shell
Silk knife withstands part and receives arc plate, gently taps screw driver handle, deviates from part.
Step 6：Postwelding is cleared up
Acetone being dipped with absorbent cotton or ethanol is cleared up to welding face, removes gold-plated smoked coated of weld seam.
(3) implementation result
The air coolant tube for being welded as stated above, even weld is consistent, smooth finish, and width is 0.8～1.0mm,
Substantially no reinforcement, without the need for reconditioning；Solderless leakage, burn or the defect such as main body burn, first-time qualification rate reaches 94%；It is effectively controlled
Welding deformation, it is ensured that air coolant tube leaf basin, the type face precision of blade back.
Claims (5)
1. a kind of thin-walled air coolant tube method of attachment, it is characterised in that comprise the following steps：
Prepared by air coolant tube joint：Thin-walled air coolant tube joint is processed by shot blasting, remelted layer, splash, oxide layer is removed,
It is carried out at part interface, welding face positive and negative and round-corner transition, dries up；
Air coolant tube Set and Positioning：By the core of weld jig by receiving in arc plate end insertion part, part is made to receive leading for arc plate end
Pipe profile is concordant with the line of core, is put in weld jig type groove, assembling clamping；Rise, receipts arc sheet separation is not more than 0.1mm；
Main body weld gap local is not more than 0.15mm, grinds one's teeth or overlap before no visual weldering；
Teaching is scanned：Laser welding system is clamped using industrial robot, adjustment robot makes laser instrument defocusing amount, by laser instrument
Guiding hot spot alignment weld seam；Air transport line program simultaneously observes guiding hot spot, it is ensured that guiding hot spot covers weld seam all the time；
Air coolant tube is welded：Nozzle diameter is 10mm, is 4mm away from welding face；Protective gas is Ar gas, supplies gas in advance not little before weldering
In 10s, postwelding delay protection is supplied gas 10s；Welding is without welding wire；After confirmation is errorless, operation welding procedure enters to air coolant tube
Row welding；
Remove fixture：After the completion of welding, take out core immediately and be clamped to arc plate end is received on tiger's jaw clamp, use minus screw
Knife withstands part and receives arc plate, gently taps screw driver handle, exits part；
Postwelding is cleared up：Acetone being dipped with absorbent cotton or ethanol is cleared up to welding face, removes gold-plated smoked coated of weld seam.
2. the thin-walled air coolant tube method of attachment as described in claim 1, it is characterised in that：Air coolant tube is welded, specially：Light
Fibre laser power be 160～240W, defocusing amount be+4～+8mm, speed of welding be 6～12mm/s, laser power rise and under
The drop time is 0.2～0.5s；Coaxial protection, shielding gas flow is 15～30L/min.
3. the thin-walled air coolant tube method of attachment as described in claim 1, it is characterised in that：In teaching scanning step, choose
Arcing point, receipts acnode and both intermediate points, programming fitting c-type curve.
4. the thin-walled air coolant tube method of attachment as described in claim 1, it is characterised in that：Air coolant tube Set and Positioning, specifically
For：Compression of outwarding winding knob, non-for part welding side is put in fixture type groove down；Adjustment insert position and angle, make tail end with
Locating piece contact, the non-welding side of part are contacted with bottom locating piece；Compression knob is screwed, closes weld seam；When weld seam interface
When starting contact, light and slow screws compression knob with adjustment assembly gap, while the welding face of touch is ground one's teeth before weldering with reducing.
5. the thin-walled air coolant tube method of attachment as described in claim 4, it is characterised in that：When weld seam local gap is less than
During 0.15mm, stop compression knob is screwed, and be corrected, grind one's teeth before reducing weldering further.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068717.5A CN106425101A (en) | 2016-11-29 | 2016-11-29 | Thin-walled air coolant guide tube connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068717.5A CN106425101A (en) | 2016-11-29 | 2016-11-29 | Thin-walled air coolant guide tube connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106425101A true CN106425101A (en) | 2017-02-22 |
Family
ID=58219544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611068717.5A Pending CN106425101A (en) | 2016-11-29 | 2016-11-29 | Thin-walled air coolant guide tube connecting method |
Country Status (1)
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| CN (1) | CN106425101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664021A (en) * | 2018-12-17 | 2019-04-23 | 中国航发动力股份有限公司 | A kind of method for laser welding in thin-wall curve narrow face |
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2016
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| JPH09206969A (en) * | 1996-01-31 | 1997-08-12 | Mazda Motor Corp | Laser edge welding member and its welding method |
| CN1968782A (en) * | 2004-06-16 | 2007-05-23 | Ls电线有限公司 | Continuous butt welding method using plasma and laser, and method for fabricating metal tube using the same |
| CN101282816A (en) * | 2005-10-07 | 2008-10-08 | 日产自动车株式会社 | Laser processing robot control system, control method and control program medium |
| CN104439665A (en) * | 2014-10-28 | 2015-03-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Ultrathin cold air flow guide pipe precise welding method |
| CN105014246A (en) * | 2015-07-17 | 2015-11-04 | 西安航空动力股份有限公司 | Welding clamp for special-shape thin-wall taper pipe |
| CN105665577A (en) * | 2015-11-25 | 2016-06-15 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method and process unit for cool air guide pipe of complex structure |
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| CN109664021A (en) * | 2018-12-17 | 2019-04-23 | 中国航发动力股份有限公司 | A kind of method for laser welding in thin-wall curve narrow face |
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| PB01 | Publication | ||
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Application publication date: 20170222 |