CN106583906A - Method for improving quality of overlapping weld seam between mounting side of inner cone and cylinder body - Google Patents
Method for improving quality of overlapping weld seam between mounting side of inner cone and cylinder body Download PDFInfo
- Publication number
- CN106583906A CN106583906A CN201611068762.0A CN201611068762A CN106583906A CN 106583906 A CN106583906 A CN 106583906A CN 201611068762 A CN201611068762 A CN 201611068762A CN 106583906 A CN106583906 A CN 106583906A
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- weld seam
- welding
- cylinder
- cylinder body
- electron beam
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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
- B23K15/00—Electron-beam welding or cutting
- B23K15/0006—Electron-beam welding or cutting specially adapted for particular articles
-
- 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
- B23K15/00—Electron-beam welding or cutting
- B23K15/0033—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
- B23K15/00—Electron-beam welding or cutting
- B23K15/0046—Welding
- B23K15/0053—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
- B23K15/00—Electron-beam welding or cutting
- B23K15/06—Electron-beam welding or cutting within a vacuum chamber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
The invention discloses a method for improving the quality of an overlapping weld seam between a mounting side of an inner cone and a cylinder body. The method is characterized by comprising the following steps: firstly, changing a notch of the cylinder body into a window, and processing the window of the cylinder body by adopting a laser punching process; secondly, cleaning oil stain on a to-be-welded part between the mounting side and the cylinder body, and cleanly wiping the to-be-welded part; thirdly, assembling the mounting side and the cylinder body which are matched with each other; fourthly, putting parts and a clamp on a worktable of a vacuum electron beam welder positioner and carrying out clamping; fifthly, closing a vacuum chamber of an electron beam welder and carrying out vacuumizing; sixthly, welding the parts according to electron beam welding parameters qualified by debugging; and seventhly, inspecting the weld seam by X ray. The method disclosed by the invention has the advantages that a window structure is continuously lapped with the mounting side, and an interrupted weld seam structure is changed into a whole ring continuous weld seam, so that a fillet weld seam structure at the tail end of the weld seam is eliminated, and stress concentration is reduced; and manual argon arc welding is improved into a vacuum electron beam scheme, and back inert gas protection and the penetration rate of the weld seam are realized, thereby ensuring the welding quality of the parts, reducing repair welding times of the weld seam, reducing reworking expenses, and guaranteeing the safe service life of the inner cone.
Description
Technical field
The present invention relates to aero-engine manufacturing technology field, specifically a kind of inner cone installation side and cylinder overlap welding
The method of seam quality.
Background technology
After inner cone (Fig. 1) is tested 10 hours, visual or dyeing inspection, part bead crack fault rate more than 50%, work
Make the crackle of weld seam 100% after 300 hours life cycles, need to reprocess repair welding.The expense of reprocessing is increased, affects batch product supporting
Efficiency.Analysis reason, inner cone welding structure is installed side 1 and is overlapped with cylinder 2, and the wall of cylinder 2 is close to install side 1, and original uses manual
Argon arc welding, because the logical argon gas protection in the back side is not smooth, actual argon arc welding penetration rate only has 10%～20%, and weld strength extreme difference makes
Due to factors such as vibrations with during, cracking failure is easily produced；Notch forms angle welding knot at argon arc weld seam ending at 15
, there is larger stress concentration in structure, due to factors such as vibrations during use, easily form weld seam initial crack edge, exists and uses
Potential safety hazard.Seriously constrain the supporting payment of product.To ensure that plant produced task is smoothly completed, while being also reduction part
The number of rewelding mass loss unnecessary so as to reduce factory, need to improve inner cone workmanship, re-start technological design,
Improve product percent of pass.
The content of the invention
To solve above-mentioned technical problem, it is an object of the invention to provide a kind of inner cone that improves installs side and cylinder overlap welding
The method of seam quality, comprises the following steps：
1st, the notch of cylinder is changed to into window, cylinder window is processed using laser hole-cutting technique；
The 2nd, side and cylinder place's cleaning greasy dirt to be welded and wiped clean will be installed；
3rd, supporting installation side and cylinder are assembled together, are compressed cylinder with side is installed using fixture；
4th, part and fixture are placed on vacuum electron beam welder deflection machine workbench and are clamped；
5th, close electron-beam welder vacuum chamber and vacuumize；
6th, by the electron beam weldering parameter soldering part that debugging is qualified；
7th, X-ray examination weld seam.
Advantages of the present invention：Window structure is continuous with installation edge lap, and intermittent weld structure is improved to domain continuous weld,
Weld seam terminal angular welding line structure is avoided, stress concentration is reduced；Manual argon arc welding is improved to into vacuum electron beam scheme, the back side is solved
Inert gas shielding and weld seam penetration rate, so as to ensure part welding quality, reduce weld seam repair welding number of times, and expense is reprocessed in reduction,
Ensure inner cone safe operating life.
Description of the drawings
Fig. 1 is inner cone structural representation；
Fig. 2 is that Fig. 1 inner cones install side back side band boss overlap joint docking argon arc welding original structure enlarged drawing；
Fig. 3 is to improve front argon arc weld seam end with angle welding structure chart；
Fig. 4 is that electron beam weld forms domain welding line structure figure after improvement.
Specific embodiment
The present invention is illustrated below in conjunction with the accompanying drawings, Fig. 1 is inner cone structural representation, by 2 groups of installation side 1 and cylinder
Into.
Part welded structure original is connect using manual argon arc welding, and due to installing side 1 and the bridging arrangement of cylinder 2, the wall of cylinder 2 is close to
Side 1 is installed, the not smooth actual argon arc welding penetration rate of the logical argon gas in the back side only has 10%～20%, weld strength extreme difference, during use
Due to factors such as vibrations, cracking failure is easily produced；Notch forms fillet welding crack structure at argon arc weld seam ending at 15, exist compared with
Big stress concentration, due to factors such as vibrations during use, easily forms weld seam initial crack edge.Part is always using manual
Argon arc welding, welding quality is very unstable, and after test, visual or dyeing inspection, part bead crack fault rate only more than 50% is needed
Reprocess repair welding.After 300 hours life cycles of work, intimate 100% crack fault.X-ray examination finds that part postwelding has
The phenomenon such as lack of penetration.
Fig. 2 is that Fig. 1 inner cones install side back side band boss overlap joint docking argon arc welding original structure enlarged drawing, due to installing side 1
With the bridging arrangement of cylinder 2, the wall of cylinder 2 is close to install side, and logical argon gas is not smooth the A of the back side at, and actual argon arc welding penetration rate only has 10%
～20%, weld strength extreme difference, due to factors such as vibrations during use, easily produces cracking failure.
Fig. 3 is to improve front argon arc weld seam end with angle welding structure chart, and notch 3 at 15 is overlapped with cylinder 2 due to installing side 1
Structure, B forms fillet welding crack structure at argon arc weld seam ending, there is larger stress concentration, due to vibration etc. during use
Factor, easily forms weld seam initial crack edge.
Fig. 4 is that electron beam weld forms domain welding line structure figure after improvement, the domain of cylinder 2 overlap joint welding structure is improved, at C
Uninterrupted welding structure can weld using electron beam, and domain welding line structure D does not have stress concentration, it is to avoid original weld seam is last
End angle welding stress concentration structure；Optimization argon arc welding is electron-bombardment welding technique, solves welding inert gas shielding, electron beam
Welding directly penetrates back side ledge structure E, realizes 100% electron beam penetration rate, it is ensured that weldquality reliability.
Concrete operation step：
1st, optimize technique structure, by notch at the 15 of cylinder 2 window 3 at 15 are changed to, and Fig. 4 are seen, using laser hole-cutting technique
Processing cylinder window 3；
2nd, side 1 will be installed and will clear up greasy dirt and wiped clean with the place to be welded of cylinder 2；
3rd, supporting installation side 1 and cylinder 2 are assembled together, are compressed cylinder with side is installed using Simple clamp；
4th, part and fixture are placed on vacuum electron beam welder deflection machine workbench and are clamped；
5th, close electron-beam welder vacuum chamber and vacuumize；
6th, by the electron beam weldering soldering part of parameter list 1 that debugging is qualified；
7th, there is no the defects such as lack of penetration, incomplete fusion, crackle, contracting ditch, weld is accepted rate 100% in X-ray examination weld seam.
The welding parameter of electron beam of table 1
Claims (1)
1. it is a kind of to improve the method that inner cone installs side and cylinder lap weld quality, it is characterised in that to comprise the following steps：
(1), the notch of cylinder is changed to into window, cylinder window is processed using laser hole-cutting technique；
(2), side and cylinder place's cleaning greasy dirt to be welded and wiped clean will be installed；
(3), supporting installation side and cylinder are assembled together, cylinder is compressed with side is installed using fixture；
(4), part and fixture are placed on vacuum electron beam welder deflection machine workbench and are clamped；
(5), close electron-beam welder vacuum chamber and vacuumize；
(6), by the electron beam weldering parameter soldering part that debugging is qualified；
(7), X-ray examination weld seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068762.0A CN106583906B (en) | 2016-11-29 | 2016-11-29 | Method for improving quality of lap weld of inner cone mounting edge and cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068762.0A CN106583906B (en) | 2016-11-29 | 2016-11-29 | Method for improving quality of lap weld of inner cone mounting edge and cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106583906A true CN106583906A (en) | 2017-04-26 |
| CN106583906B CN106583906B (en) | 2020-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611068762.0A Active CN106583906B (en) | 2016-11-29 | 2016-11-29 | Method for improving quality of lap weld of inner cone mounting edge and cylinder |
Country Status (1)
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| CN (1) | CN106583906B (en) |
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| CN106583906B (en) | 2020-06-05 |
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