CN108080878A - A kind of aero-engine support case support base welding repair method - Google Patents
A kind of aero-engine support case support base welding repair method Download PDFInfo
- Publication number
- CN108080878A CN108080878A CN201711322542.0A CN201711322542A CN108080878A CN 108080878 A CN108080878 A CN 108080878A CN 201711322542 A CN201711322542 A CN 201711322542A CN 108080878 A CN108080878 A CN 108080878A
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- support base
- welding
- casing
- repair
- aero
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of aero-engine support case support base welding repair methods, this method is applied to support base crackle area more than the mode that replacement support base is used in the case of support base area 50%, remove the support base with crackle, again a new support base is welded, realizes the reparation of agency casing；The reparation of Middle casing is completed using the mode of repair welding support base in the case where support base crackle area is no more than support base area 50%.This method ensure that weld strength and installation side precision meet requirement, so as to extend the service life of casing.
Description
Technical field
The invention belongs to aircraft engine maintenance technical fields；More particularly to a kind of aero-engine support case support base
Welding repair method.
Background technology
When aero-engine is repaired, it is found that the cracked or even entire fulcrum bearing of Middle casing master rocker fulcrum bearing is broken
It splits, Middle casing is caused to be scrapped, improve repair cost.Middle casing is the primary load bearing casing of engine, by outer casing, interior machine
Casket and eight pieces of hollow rectification support plates are welded, weld seam quantity up to 64, and fulcrum bearing is welded using the method for argon arc welding
On Middle casing, weld pitch casing installation side only 5mm, installation side wall thickness 2.4mm, a diameter of 809.625mm are required after repairing
End face run-out≤0.2mm；Middle casing material of main part is to cast martensitic stain less steel ZG1Cr12Ni3Mo2Co2VN, welding process
It is also easy to produce crackle.
Through engineer testing repeatedly, by using anti-deformation tool, the replacement of fulcrum bearing is successfully realized, and pass through part and go to answer
Power is heat-treated, and is made its welding performance index and is installed the requirement that side bounce reaches acceptance criteria, improves the repairing of Middle casing
It is horizontal.
The content of the invention
The present invention provides a kind of aero-engine support case support base welding repair method, ensure that weld strength and
Installation side precision meets requirement, so as to extend the service life of casing.
The technical scheme is that：A kind of aero-engine support case support base welding repair method, to support base
Crackle area is more than the support base of support base area 50%, carries out replacing support base process, comprise the following steps：
Step S1 removes the support base of casing to be repaired；
Step S2 is installed on casing and opened and the matched mounting hole of support base on the position of support base；
The support base of replacement is fixed on the mounting hole of casing by step S3, then carries out tack-weld；
Support base using argon arc welding is welded on the mounting hole of casing, completes the Replacement and Repair of support base by step S4.
Further, the features of the present invention also resides in：
The welding requirements of argon arc welding is in wherein step S4：The a diameter of 2.4-3.2mm of tungsten electrode；Welding wire specification is diameter 1.0-
1.6mm；Nozzle diameter is 20-25mm；The current increase time is 1-5s；Welding current is 40-50A；Arc voltage is 8-11V；
Front argon flow amount is 8-12L/min；Reverse side argon flow amount is 5-8L/min；Current attenuation is 1-5s.
Welding wire is in wherein step S4：H1Crl2Ni3Mo2Co2VN。
It is further included in wherein step S4 and a position degree and end face jump is supported to the casing for completing support base Replacement and Repair
Dynamic inspection.
It is further included in wherein step S4 and a weld seam progress X-ray or glimmering is supported to the casing for completing support base Replacement and Repair
Optical test.
It is further included in wherein step S4 and destressing processing is carried out to the casing for completing support base Replacement and Repair.
Wherein it is not more than the support base of support base area 50% to support base crackle area, is supported a repair welding process；
Repair welding uses argon arc welding mode, and welding requirements is：The a diameter of 2.4-3.2mm of tungsten electrode；Welding wire is H1Crl2Ni3Mo2Co2VN；Weldering
Silk specification is diameter 1.0-1.6mm；Nozzle diameter is 20-25mm；The current increase time is 1-5s；Welding current is 40-50A；
Arc voltage is 8-11V；Front argon flow amount is 8-12L/min；Reverse side argon flow amount is 5-8L/min；Current attenuation is 1-
5s。
Wherein this method includes carrying out X-ray or fluoroscopy to the support base repair welding weld seam after reparation, checks after repairing
Support base position degree and end face run-out carry out destressing processing to the support base after reparation.
Compared with prior art, the beneficial effects of the invention are as follows：It the method achieve aero-engine casing support base
Weld repairs are replaced, are more than support base area 50% suitable for the crackle area in support base, it can not using this method
The casing of reparation is welded by the replacement of support base, extends the service life of welding casing, it is ensured that its performance indicator can reach
To the requirement of acceptance criteria, the repairing for improving welding casing is horizontal.
Further, this method specifically discloses the welding requirements of detailed argon arc welding, which disclosure satisfy that
The casing welding requirements of martensitic stain less steel material.
Further, after support base Replacement and Repair completion, destressing processing is carried out to it, to support base position degree
And end face run-out is checked and carries out X-ray or fluoroscopy to support base weld seam, improves the matter that support base replaces welding
Amount.
Beneficial effects of the present invention also reside in：In the case of the crackle area of support base is no more than support base area 50%
Under, the reparation to casing support base can be completed to the progress repair welding of support base weld seam, this method specifically provides the welding of repair welding
It is required that casing of this method mainly for martensitic stain less steel material.
Further, after support base Replacement and Repair completion, destressing processing is carried out to it, to support base position degree
And end face run-out is checked and carries out X-ray or fluoroscopy to support base weld seam, improves the matter that support base replaces welding
Amount.
Description of the drawings
Fig. 1 is the structure diagram of support case in the present invention；
Fig. 2 is the structure diagram of F-F sections in Fig. 1.
In figure：1 is outer casing；2 be interior casing；3 be connecting pole；4 be support base；5 be weld seam.
Specific embodiment
Technical scheme is further illustrated with reference to specific embodiments and the drawings.
The method of the present invention is used for aero-engine casing support base REPAIR WELDING, the wherein knot of aero-engine casing
Structure is as shown in Figure 1, including outer casing 1 and interior casing 2, and outer casing 1 and interior casing 2 are welded by 8 connecting poles 3, outer machine
4 support bases 4 are provided on casket 1, support base 4 is used to support outer casing.
The sectional view of support base 4 is as shown in Fig. 2, the wherein figure is the structure diagram after REPAIR WELDING, cylinder in figure
A plurality of weld seam 5 is provided between the 4 outer casing 1 of support base of structure.
The present invention provides a kind of aero-engine support case support base welding repair method, this method is applied to branch
It supports in the case that seat crackle area is more than support base area 50% and uses the mode for replacing support base, that is, remove the support with crackle
Seat welds a new support base again, realizes the reparation of agency casing.Its detailed process is as follows：
Step S1 removes the support base of casing to be repaired；Original of casing is specifically removed by the way of Vehicle Processing
Support seat.
Step S2 is removed on casing and opened up on the position of support base with newly installing the matched mounting hole of support base；Specifically
The mode that boring machine may be employed mounting hole is bored on casing.
New support base is fixed on by angle positioning tooling equipment and fixing tool on the mounting hole of casing, so by step S3
Memory tack-weld afterwards.
Support base is welded on the mounting hole of casing by step S4 by the way of argon arc welding, completes the replacement of support base
It repairs；The welding requirements of wherein argon arc welding is：The a diameter of 2.4-3.2mm of tungsten electrode；Welding wire is H1Crl2Ni3Mo2Co2VN；Welding wire is advised
Lattice are diameter 1.0-1.6mm；Nozzle diameter is 20-25mm；The current increase time is 1-5s；Welding current is 40-50A；Electric arc
Voltage is 8-11V；Front argon flow amount is 8-12L/min；Reverse side argon flow amount is 5-8L/min；Current attenuation is 1-5s.
It after the Replacement and Repair for completing support base, further includes and X-ray or fluoroscopy is carried out to support base weld seam, check support base position degree
And end face run-out, destressing processing is carried out to the support base after reparation.
The mode of support base repair welding is used in the case of being wherein not more than support base area 50% to support base crackle area,
Realize the reparation of agency casing.Its detailed process is as follows：
Repair welding is carried out to support base crackle, by the way of argon arc welding, welding requirements is a diameter of 2.4- of tungsten electrode for repair welding
3.2mm；Welding wire is H1Crl2Ni3Mo2Co2VN；Welding wire specification is diameter 1.0-1.6mm；Nozzle diameter is 20-25mm；Electric current is passed
The increasing time is 1-5s；Welding current is 40-50A；Arc voltage is 8-11V；Front argon flow amount is 8-12L/min；Reverse side argon
Throughput is 5-8L/min；Current attenuation is 1-5s.After the Welding Repair of support base is completed, further include to support base repair welding
Weld seam carries out X-ray or fluoroscopy, checks support base position degree and end face run-out, and destressing is carried out to the support base after reparation
Processing.
Specific embodiments of the present invention are
Embodiment 1
Certain aero-engine Middle casing component is martensitic stain less steel thin walled welds sub-assembly；It has outer casing, interior machine
Casket and 8 pieces of hollow rectification support plates are welded, and weld seam quantity up to 64, support base is welded by the way of argon arc welding
On Middle casing, the wall thickness of commissure is 1.4-1.7mm, weld pitch casing installing plate only 5mm, installs side wall thickness 2.4mm, directly
Footpath is 809.625mm, and end face run-out≤0.2mm is required after repairing, and Middle casing material of main part is casting martensitic stain less steel
ZG1Cr12Ni3Mo2Co2VN；And its support base crackle area is more than the 50% of support base area, therefore branch is replaced using the present invention
The method of support seat is repaired, and detailed process is：
First：Support base is removed by the way of turner；Then the position of new support base is installed using boring machine on casing
It puts and bores and the matched mounting hole of support base；Then new support base is fixed on by machine using angle positioning tooling equipment and fixing tool
On the mounting hole of casket, tack-weld is then carried out；Support base is finally welded by the way of argon arc welding, welding procedure is preferred
For：The a diameter of 2.5mm of tungsten electrode diameter tungsten electrode；Welding wire is H1Crl2Ni3Mo2Co2VN；Welding wire specification is diameter 1.0mm；Nozzle diameter
For 20mm；The current increase time is 3s；Welding current is 40A；Arc voltage is 10V；Front argon flow amount is 10L/min；Instead
Face argon flow amount is 5L/min；Current attenuation is 4s；Then the Replacement and Repair of support base are completed；Finally the support base of replacement is welded
Seam carries out X-ray or fluoroscopy, checks the support base position degree and end face run-out of replacement, and the support base of replacement is carried out should
Power processing.
Embodiment 2
Certain aero-engine Middle casing component is martensitic stain less steel thin walled welds sub-assembly；It has outer casing, interior machine
Casket and 8 pieces of hollow rectification support plates are welded, and weld seam quantity up to 64, support base is welded by the way of argon arc welding
On Middle casing, the wall thickness of commissure is 1.5-1.7mm, weld pitch casing installing plate only 5mm, installs side wall thickness 2.4mm, directly
Footpath is 809.625mm, and end face run-out≤0.2mm is required after repairing, and Middle casing material of main part is casting martensitic stain less steel
ZG1Cr12Ni3Mo2Co2VN；And 70% that its support base crackle area is support base area, therefore replaced and supported using the present invention
The method of seat is repaired.The process that it is repaired is identical with the process of embodiment 1, and the welding requirements of wherein argon arc welding is different, tool
Body is：The a diameter of 2.4mm of tungsten electrode diameter tungsten electrode；Welding wire is H1Crl2Ni3Mo2Co2VN；Welding wire specification is diameter 1.5mm；Nozzle is straight
Footpath is 25mm；The current increase time is 1s；Welding current is 45A；Arc voltage is 8V；Front argon flow amount is 8L/min；Instead
Face argon flow amount is 7L/min；Current attenuation is 1s.
Embodiment 3
Certain aero-engine Middle casing component is martensitic stain less steel thin walled welds sub-assembly；It has outer casing, interior machine
Casket and 9 pieces of hollow rectification support plates are welded, and weld seam quantity up to 60, support base is welded by the way of argon arc welding
On Middle casing, the wall thickness of commissure is 1.8mm, weld pitch casing installing plate only 5mm, installation side wall thickness 2.4mm, a diameter of
809.625mm, requires end face run-out≤0.2mm after repairing, Middle casing material of main part is casting martensitic stain less steel
ZG1Cr12Ni3Mo2Co2VN；And 75% that its support base crackle area is support base area, therefore replaced and supported using the present invention
The method of seat is repaired.The process that it is repaired is identical with the process of embodiment 1, and the welding requirements of wherein argon arc welding is different, tool
Body is：The a diameter of 3.2mm of tungsten electrode diameter tungsten electrode；Welding wire is H1Crl2Ni3Mo2Co2VN；Welding wire specification is diameter 1.6mm；Nozzle is straight
Footpath is 22mm；The current increase time is 5s；Welding current is 50A；Arc voltage is 11V；Front argon flow amount is 12L/min；
Reverse side argon flow amount is 8L/min；Current attenuation is 5s.
Embodiment 4
Certain aero-engine Middle casing component is martensitic stain less steel thin walled welds sub-assembly；It has outer casing, interior machine
Casket and 8 pieces of hollow rectification support plates are welded, and weld seam quantity up to 64, support base is welded by the way of argon arc welding
On Middle casing, the wall thickness of commissure is 1.4-1.7mm, weld pitch casing installing plate only 5mm, installs side wall thickness 2.4mm, directly
Footpath is 809.625mm, and end face run-out≤0.2mm is required after repairing, and Middle casing material of main part is casting martensitic stain less steel
ZG1Cr12Ni3Mo2Co2VN；And 45% that its support base crackle area is support base area, therefore supported using repair welding of the present invention
The method of seat is repaired, and detailed process is：
Repair welding is carried out to casing support base crackle, by the way of argon arc welding, welding requirements is for repair welding：Tungsten electrode is a diameter of
2.5mm；Welding wire is H1Crl2Ni3Mo2Co2VN；Welding wire specification is diameter 1.0mm；Nozzle diameter is 20mm；The current increase time is
3s；Welding current is 40A；Arc voltage is 10V；Front argon flow amount is 10L/min；Reverse side argon flow amount is 5L/min；Electricity
Stream decays to 4s, completes to support base REPAIR WELDING；X-ray or fluoroscopy finally are carried out to support base repair welding weld seam, check branch
Seat position degree and end face run-out are supportted, destressing processing is carried out to the support base after reparation.
Embodiment 5
Certain aero-engine Middle casing component is martensitic stain less steel thin walled welds sub-assembly；It has outer casing, interior machine
Casket and 8 pieces of hollow rectification support plates are welded, and weld seam quantity up to 64, support base is welded by the way of argon arc welding
On Middle casing, the wall thickness of commissure is 1.6mm, weld pitch casing installing plate only 5mm, installation side wall thickness 2.4mm, a diameter of
809.625mm, requires end face run-out≤0.2mm after repairing, Middle casing material of main part is casting martensitic stain less steel
ZG1Cr12Ni3Mo2Co2VN；And 48% that its support base crackle area is support base area, therefore supported using repair welding of the present invention
The method of seat is repaired, and detailed process is：
Repair welding is carried out to casing support base crackle, by the way of argon arc welding, welding requirements is for repair welding：Tungsten electrode is a diameter of
2.4mm；Welding wire is H1Crl2Ni3Mo2Co2VN；Welding wire specification is diameter 1.3mm；Nozzle diameter is 24mm；The current increase time is
1s；Welding current is 48A；Arc voltage is 8V；Front argon flow amount is 8L/min；Reverse side argon flow amount is 7L/min；Electric current
5s is decayed to, is completed to support base REPAIR WELDING；X-ray or fluoroscopy finally are carried out to support base repair welding weld seam, check support
Seat position degree and end face run-out carry out destressing processing to the support base after reparation.
Embodiment 6
Certain aero-engine Middle casing component is martensitic stain less steel thin walled welds sub-assembly；It has outer casing, interior machine
Casket and 9 pieces of hollow rectification support plates are welded, and weld seam quantity up to 60, support base is welded by the way of argon arc welding
On Middle casing, the wall thickness of commissure is 1.6mm, weld pitch casing installing plate only 5mm, installation side wall thickness 2.4mm, a diameter of
809.625mm, requires end face run-out≤0.2mm after repairing, Middle casing material of main part is casting martensitic stain less steel
ZG1Cr12Ni3Mo2Co2VN；And 30% that its support base crackle area is support base area, therefore supported using repair welding of the present invention
The method of seat is repaired, and detailed process is：
Repair welding is carried out to casing support base crackle, by the way of argon arc welding, welding requirements is for repair welding：Tungsten electrode is a diameter of
3.2mm；Welding wire is H1Crl2Ni3Mo2Co2VN；Welding wire specification is diameter 1.5mm；Nozzle diameter is 25mm；The current increase time is
5s；Welding current is 50A；Arc voltage is 11V；Front argon flow amount is 12L/min；Reverse side argon flow amount is 8L/min；Electricity
Stream decays to 1s, completes to support base REPAIR WELDING；X-ray or fluoroscopy finally are carried out to support base repair welding weld seam, check branch
Seat position degree and end face run-out are supportted, destressing processing is carried out to the support base after reparation.
Embodiment 7
It has multiple support bases in same aero-engine Middle casing component, wherein the crack surface of some support bases
50% of product more than support base area, some support base crackle areas are less than the 50% of support base area；Therefore in same
In Jie's casing component, Replacement and Repair may be employed and Welding Repair two ways agency casing component is repaired.
Claims (8)
1. a kind of aero-engine support case support base welding repair method, which is characterized in that big to support base crackle area
In the support base of support base area 50%, carry out replacing support base process, comprise the following steps：
Step S1 removes the support base of casing to be repaired；
Step S2 is installed on casing and opened and the matched mounting hole of support base on the position of support base；
The support base of replacement is fixed on the mounting hole of casing by step S3, then carries out tack-weld；
Support base using argon arc welding is welded on the mounting hole of casing, completes the Replacement and Repair of support base by step S4.
2. aero-engine support case support base welding repair method according to claim 1, which is characterized in that described
The welding requirements of argon arc welding is in step S4：The a diameter of 2.4-3.2mm of tungsten electrode；Welding wire specification is diameter 1.0-1.6mm；Nozzle is straight
Footpath is 20-25mm；The current increase time is 1-5s；Welding current is 40-50A；Arc voltage is 8-11V；Front argon flow amount
For 8-12L/min；Reverse side argon flow amount is 5-8L/min；Current attenuation is 1-5s.
3. aero-engine support case support base welding repair method according to claim 2, which is characterized in that described
Welding wire is in step S4：H1Crl2Ni3Mo2Co2VN。
4. aero-engine support case support base welding repair method according to claim 1, which is characterized in that described
The inspection that a position degree and end face run-out are supported to the casing for completing support base Replacement and Repair is further included in step S4.
5. aero-engine support case support base welding repair method according to claim 1, which is characterized in that described
It is further included in step S4 and weld seam progress X-ray or a fluoroscopy is supported to the casing for completing support base Replacement and Repair.
6. aero-engine support case support base welding repair method according to claim 1, which is characterized in that described
It is further included in step S4 and destressing processing is carried out to the casing for completing support base Replacement and Repair.
7. aero-engine support case support base welding repair method according to claim 1, which is characterized in that branch
The support base that seat crackle area is not more than support base area 50% is supportted, is supported a repair welding process；To casing support base crackle
Repair welding is carried out, repair welding uses argon arc welding mode, and welding requirements is：The a diameter of 2.4-3.2mm of tungsten electrode；Welding wire is
H1Crl2Ni3Mo2Co2VN；Welding wire specification is diameter 1.0-1.6mm；Nozzle diameter is 20-25mm；The current increase time is 1-5s；
Welding current is 40-50A；Arc voltage is 8-11V；Front argon flow amount is 8-12L/min；Reverse side argon flow amount is 5-8L/
min；Current attenuation is 1-5s, is completed to support base REPAIR WELDING.
8. aero-engine support case support base welding repair method according to claim 7, which is characterized in that the party
Method includes carrying out X-ray or fluoroscopy to the support base repair welding weld seam after reparation, checks the support base position degree after repairing and end
Face is beated, and destressing processing is carried out to the support base after reparation.
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| CN110216413A (en) * | 2019-05-23 | 2019-09-10 | 航发优材(镇江)增材制造有限公司 | Nickel base superalloy turbine support seat argon arc welding restorative procedure |
| CN110757023A (en) * | 2019-10-28 | 2020-02-07 | 中国航发南方工业有限公司 | Welding repair method and device for cartridge receiver parts |
| CN112059531A (en) * | 2020-07-24 | 2020-12-11 | 西安航天发动机有限公司 | Method for repairing defects of precision investment casting for liquid rocket engine |
| CN115041916A (en) * | 2022-06-21 | 2022-09-13 | 邯郸市永年区海翔机械厂 | Device for repairing crack of intermediate casing of aircraft engine and using method thereof |
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| CN110757023A (en) * | 2019-10-28 | 2020-02-07 | 中国航发南方工业有限公司 | Welding repair method and device for cartridge receiver parts |
| CN112059531A (en) * | 2020-07-24 | 2020-12-11 | 西安航天发动机有限公司 | Method for repairing defects of precision investment casting for liquid rocket engine |
| CN112059531B (en) * | 2020-07-24 | 2022-04-08 | 西安航天发动机有限公司 | Method for repairing defects of precision investment casting for liquid rocket engine |
| CN115041916A (en) * | 2022-06-21 | 2022-09-13 | 邯郸市永年区海翔机械厂 | Device for repairing crack of intermediate casing of aircraft engine and using method thereof |
| CN115041916B (en) * | 2022-06-21 | 2024-04-05 | 邯郸市永年区海翔机械厂 | Device for repairing cracks of intermediate case of aeroengine and use method thereof |
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| CN108080878B (en) | 2019-05-07 |
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