CN107199430A - One kind is used for high pressure vessel areole flange welding and assembles device - Google Patents
One kind is used for high pressure vessel areole flange welding and assembles device Download PDFInfo
- Publication number
- CN107199430A CN107199430A CN201710546157.8A CN201710546157A CN107199430A CN 107199430 A CN107199430 A CN 107199430A CN 201710546157 A CN201710546157 A CN 201710546157A CN 107199430 A CN107199430 A CN 107199430A
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- China
- Prior art keywords
- disk
- pressure vessel
- high pressure
- supporter
- taper
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Classifications
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
One kind is used for high pressure vessel areole flange welding and assembles device, takes over a business positioned at the end of the taper platen smaller diameter end, the two is connected by screw rod.Multiple supporters are distributed on the circumferential surface of taper platen, and by taking over a business positioning.Multiple setting disks are separately mounted on the end face of each supporter.Moved radially in use, adjusting multiple supporters, reached by holding round workpiece housing installed in the setting disk of each supporter end face after form accuracy requirement, each setting disk is removed successively, and be replaced by positioning disk；Screwing force is applied to the positioning disk by sphere band shoulder nut, to adjust flange workpiece and the unfitness of butt joint at container casing side-wall hole.The limitation of not receptor housing angle position between perforate on same section of the invention, it is ensured that the welding precision of container casing, it is adaptable to the container casing of different-diameter series, it is impossible to once complete assembling, positioning, weld, suitable multistation is continuously produced.
Description
Technical field
The present invention relates to a kind of assemble welding device field, specifically a kind of manual welding or automatic welder welding thin-walled are high
The assembling device of pressure vessel housing sidewall hole flange.
Background technology
The metal material thin-walled high-pressure bottle of internal pressure is carried the need for pressure vessel, Aeronautics and Astronautics industry use, some are needed
Monitoring no less than two is set on the same circumferential section of vessel shell body sidewall, internal pressure hole is adjusted.It is high to ensure
Pressure vessel structural strength and seal request, tapping need welded flange.Integral rigidity is deteriorated after container casing side-wall hole,
Need by outer top or inner support mode, recover the original form accuracy requirement of container casing；Container casing areole weld seam is mutually to pass through
Wire shaped, weld and HAZ, welding process thermal deformation are big, and weld defect is more, and weld properties are poor, bearing capacity reduce, it is necessary to
By controlling welding seam misalignment amount, seam center, it is ensured that weld properties.
In external container using assemble welding positioner, welding interference can be produced, use makes more inside container at present
Assemble welding positioner is used, container casing can integrally be held round and control weldquality.But from the assembling of internal erecting and welding
Device, apparatus structure can the limitation of receptor both ends open diameter.When container both ends open diameter is in three points of container casing internal diameter
Less than two when, overall structure assemble welding device can not then be used substantially.Using split-type structural in volume enclosure interior group
The assemble welding device of dress, is limited by container casing side-wall hole quantity, diameter of the housing, and assembling device general structure is complicated,
Set-up time is long, realize weld seam once complete to assemble, position, welding difficulty it is big.
The content of the invention
Device general structure complexity is assembled present in prior art to overcome, the set-up time is long, realizes that weld seam is once complete
Into the big deficiency of assembling, positioning, welding difficulty, the present invention proposes a kind of high pressure vessel areole flange welding that is used for and filled
With device.
The present invention include screw rod, taper platen, supporter, positioning disk, studs, take over a business, shape disk.Wherein：Take over a business
Positioned at the end of the taper platen smaller diameter end, the two is connected by screw rod.Multiple supporters are distributed on taper platen
Circumferential surface on, and by take over a business positioning.Multiple setting disks are separately mounted on the end face of each supporter.
Take over a business to be located at the end of the taper platen smaller diameter end, the two is connected by screw rod.Multiple supporters are equal
Cloth on the circumferential surface of taper platen, and by take over a business positioning.Multiple setting disks are separately mounted to the end of each supporter.
Moved radially in use, adjusting multiple supporters, by the setting disk installed in each supporter end face by workpiece
Housing, which is held round, to be reached after form accuracy requirement, each setting disk is removed successively, and be replaced by positioning disk；Pass through sphere band shoulder nut pair
The positioning disk applies screwing force, to adjust flange workpiece and the unfitness of butt joint at container casing side-wall hole.
The taper platen outer surface is divided into isometrical section and cone section, and the axial length of the taper platen is slightly larger than support
The axial length of body.Described isometrical section of external diameter is less than workpiece openings；The semi-cone angle of the cone section is 20 °, axial length and branch
The axial length of support body is identical.
The supporter is made up of orthogonal support bar and installing plate, and profile is " T " shape.The support bar is located at peace
Fill the center of plate；The end face of the support bar is that taper platen bores the cambered surface that section coordinates, and the taper of the cambered surface and the cone section
Taper it is identical.The surface that the installing plate is connected with support bar is plane, and another surface is and table in high pressure vessel
The arc surface that face coordinates；The direction for installing plate surface circular arc is consistent with the circumferencial direction of high pressure vessel.In the peace
There is annular groove at the edge of dress plate arc surface, and the weld seam of workpiece is avoided by the annular groove.
Positioning disk is circle.There is the seam with work pieces mate at the positioning disk lower surface outer rim.The center of the positioning disk
There is arc groove.There is the pilot hole of studs at the center of the deep-slotted chip breaker.The circumferential surface of the positioning disk has what is radially extended
Open slot, the open slot is connected with the pilot hole.
The diameter of the setting disk is more than the diameter of workpiece perforate.There is arc groove at the center of the setting disk, for nut
Location fit, with increase the sphere with shoulder nut with setting disk contact surface.There is the dress of studs in the setting disk center
Distribution.The circumferential surface of the positioning disk has the open slot radially extended, and the open slot is connected with the pilot hole.In the positioning disk
Circumferential surface have the observation openings of two U-shapeds.One panel surface of the setting disk is the circle coordinated with the outer surface of workpiece
Cambered surface.
It is described take over a business external diameter be less than workpiece openings diameter.The centre of surface that this is taken over a business is fluted, the groove
Diameter is more than isometrical section on the taper platen of external diameter.
The present invention is applied to container end face opening diameter and is less than container casing, and internal diameter is in more than 50mm, container casing wall thickness
It is not less than 10MPa high pressure vessel in below 4mm, container casing carrying internal pressure.On the high pressure vessel side wall
Same section perforate and the number of openings are no less than 1, and the weld seam tensile strength of welded flange is not less than 1450MPa.Energy of the present invention
More than enough part flange is assembled, positioned simultaneously, welding, is effectively controlled container casing form accuracy and quality of weld seam molding, is conveniently applied
Weldering, the assemble welding device of turnover.The present invention is used to carry the metal material thin-walled high-pressure bottle of internal pressure, and container end portion is small opens
Mouthful, vessel shell body sidewall many places perforate welded flange and blowing angle is not limited disclosure satisfy that assembly precision and control weldquality
The need for.
The split-type structural that the present invention is used, the assemble welding device for meeting end face small open container housing installs and uses need
Ask；The limitation of the multiple movable supporting body structures, not receptor housing angle position between perforate on same section that use；It is logical
The supporter for installing varying number is crossed, form accuracy during container casing welding is can adjust, is not deformed after receptor opening in shell
Amount influence；By changing supporter, the container casing of different-diameter series is applicable to；Split-type structural convenient disassembly, more than one piece
Flange can once complete to assemble, position, weld, will not produce welding interference, can meet manual welding or automatic welder welding
Need, suitable multistation is continuously produced.
The present invention is improved under thin-walled pressure vessel opening in shell state by setting uniform supporting construction inside thin-walled pressure vessel
Integral rigidity.Axial screwing force is converted into by radial direction tension force by cone structure, it is possible to increase container casing form accuracy
With the effect for eliminating weld seam welding influence of thermal deformation.Increase support meanss in container casing areole commissure, weldering can be improved
Inner surface forming quality is stitched, weld seam inner surface cleaning polishing workload is reduced.Using quick change pressing device, institute can be once completed
There are the assembling, positioning, welding of flange.After welder assembling is clamped, rigid attachment structure is formed, can move and have enough to meet the need with container,
Do not assembled, welding post position limitation, be easy to tissue to produce.
Brief description of the drawings
Fig. 1 a are the view in full section of the present invention, and Fig. 1 b are Fig. 1 a left views.
Fig. 2 a are the structural representations of taper platen, and Fig. 2 b are Fig. 2 a left views.
Fig. 3 a are the structural representations of supporter, and Fig. 3 b are Fig. 3 a left views.
Fig. 4 a are the structural representations of positioning disk, and Fig. 4 b are Fig. 4 a top views.
Fig. 5 a are the structural representations taken over a business, and Fig. 5 b are Fig. 5 a left views.
Fig. 6 a are the structural representations of setting disk, and Fig. 6 b are Fig. 6 a attached views.
Fig. 7 a are the present invention and the cooperation schematic diagram of workpiece, and Fig. 7 b are the A-A direction views in Fig. 7 a.
In figure：
1. screw rod；2. taper platen；3. supporter；4. positioning disk；5. studs；6. sphere band shoulder nut；7. take over a business；
8. nut；9. shape disk；10. workpiece.
Specific embodiment
The present embodiment is that a kind of high pressure vessel areole flange welding that is used for assembles device, is specifically thin in small opening
Welded flange at wall high pressure vessel side-wall hole 6.
The present embodiment include screw rod 1, taper platen 2, supporter 3, positioning disk 4, studs 5, sphere band shoulder nut 6,
Take over a business 7, hexagon nut with flange 8, setting disk 9.Wherein：
Take over a business 7 ends for being located at the smaller diameter end of taper platen 2, the two is connected by screw rod 1 and passes through nut 8
Fasten.Multiple supporters 3 are distributed on the circumferential surface of taper platen 2, and by taking over a business 7 positioning.Multiple setting disk 9 difference positions
It is connected in the end of each supporter 3, and by studs 5 with each supporter.
The taper platen 2 is the revolving body that 45 Steel materials are made.The outer surface of taper platen 2 includes isometrical section and cone section,
And the axial length of the taper platen is slightly larger than the axial length of supporter 3.Described isometrical section of external diameter is smaller than workpiece openings
80~100mm；The semi-cone angle of the cone section is 8 °~22 °, and axial length is identical with the axial length of supporter 3.The present embodiment
In, diameter of phi=166mm of isometrical section of taper platen 2, axial length is 5mm；It is 20 ° to bore section semi-cone angle, and axial length is
25mm.It is Φ 23mm in the aperture of the centre bore of taper platen 2.The end face of taper platen 2 is provided with lightening grooves, uniform lightening hole,
Lightening grooves largest diameter 140mm, minimum diameter Φ 40mm, depth 22mm；Lightening hole 6, diameter of phi 28mm.
The supporter 3 is made of aluminium alloy, is made up of orthogonal support bar and installing plate, is made the support external
Shape is " T " shape, there is the mounting hole of studs 5 at the upper surface center of the supporter, and the depth of the mounting hole is described
2.5~3 times of the diameter of studs 5.The support bar is located at the center of installing plate；The end face of the support bar is taper platen 2
The cambered surface that section coordinates is bored, and the taper of the cambered surface is identical with the taper of the cone section.
Cuboid width adds 5~10mm selections by the circular conical surface width of taper platen 2, and length is selected by 1.2~2 times of width
Take, highly subtracting the support face thickness of supporter 3 again by the cylinder internal diameter of workpiece 10 and the conical section diameter difference 1/2 of taper platen 2 chooses.
The installing plate is circular slab, and diameter+20~25mm of its a diameter of radial aperture of workpiece 10, thickness is the workpiece
The difference in height+10 of cylinder radial aperture~15mm.The surface that the installing plate is connected with support bar is plane, and another surface is
The arc surface fitted with the cylinder inner surface of high pressure vessel.The direction for installing plate surface circular arc and high pressure vessel
Circumferencial direction it is consistent, and the curvature of the arc surface is identical with the curvature of high pressure vessel inner surface.In the installing plate
There is annular groove at the edge of arc surface, and the weld seam of workpiece is avoided by the annular groove.The depth of the annular groove is 5~10mm, external diameter
For opening diameter+10 on high pressure vessel~12mm, internal diameter is opening diameter -20~40mm on high pressure vessel.
In the present embodiment, external diameter Φ=180mm of the installing plate in supporter 3, maximum gauge is 28mm.It is maximum it is cylindrical with
The cylinder inboard wall of workpiece 10 is fitted, the welding space groove for having annular on arc surface, largest diameter 170mm, minimum diameter Φ
120mm, depth 10mm.The arc surface centre of gyration has screwed hole, the support bar of the screwed hole insertion to supporter installing plate plane
Upper end, for installing GB/T900 studs 5.The cross section of the support bar is rectangle, and appearance and size is 30mm × 40mm,
Length is 108mm.
Positioning disk 4 is circle.There is the seam with work pieces mate at the positioning disk lower surface outer rim.The center of the positioning disk
There is arc groove, for location fit of the JB/T8004.2 spheres with shoulder nut 6, to increase the sphere band shoulder nut and positioning disk
Contact surface.There is the pilot hole of studs 5 at the center of the deep-slotted chip breaker.The circumferential surface of the positioning disk has what is radially extended to open
Mouth groove, the open slot is connected with the pilot hole.
In the present embodiment, the positioning disk 4 is 2A12 materials.Cylindrical positioning disk 4 is stepped, a less diameter of phi
70mm, width 5mm it is cylindrical, with the welded flange benchmark interporal lacuna of workpiece 10 coordinate；Maximum outside diameter Φ 85mm.Positioning disk 4
The centre of gyration has the pilot hole of GB/T900 studs 5, bore dia Φ 18mm.The radius R25mm of the arc groove, groove is deep
Spend 4mm；Positioning disk 4 is provided with a quick despatch open slot, groove width 18mm.
The diameter of the setting disk 9 is more than the diameter of workpiece perforate.There is arc groove at the center of the setting disk, for JB/
Location fit of the T8004.2 spheres with shoulder nut 6, to increase contact surface of the sphere with shoulder nut with setting disk.In the setting
There is the pilot hole of studs 5 in disk center.The circumferential surface of the positioning disk has the open slot radially extended, the open slot with it is described
Pilot hole is connected.There is the observation opening of two U-shapeds in the circumferential surface of the positioning disk.It is described setting disk 9 a surface be with
The arc surface that the outer surface of workpiece coordinates.
In the present embodiment, setting disk 9 is 2A12 materials.Shape disk 9 outside diameter Φ 180mm, thickness 12mm；Shape disk 9
Concave surface coordinates with the barrel outer surface of workpiece 10.The setting centre of gyration of disk 9 has the pilot hole of GB/T900 studs 5, bore dia Φ
18mm, mouth end is provided with installation ball detents of the JB/T8004.2 spheres with shoulder nut 6, groove radius R25mm, depth of groove
4mm；Disk 9 shape provided with a quick despatch open slot, groove width 18mm.
It is described take over a business 7 external diameter be less than workpiece openings diameter.The centre of surface that this takes over a business 7 is fluted, the groove
Diameter be more than isometrical section of external diameter on the taper platen 2.Multiple lightening cores are provided with this is taken over a business.
In the present embodiment, it is 45 Steel materials to take over a business 7.Take over a business 7 centres of gyration provided with the mounting hole of screw rod 1, bore dia Φ 23mm；
Taking over a business 7 end faces has a groove for avoiding taper platen 2, the diameter of phi 160mm of the groove, and depth is 5mm；Take over a business 7 end faces provided with 6
Lightening hole, diameter of phi=45mm of the lightening core.
In use, studs 5, sphere band shoulder nut 6 are first installed in the screwed hole of the installing plate of supporter 3 successively, will
The disk 9 that shapes is arranged at container casing side-wall hole.Adjust end cone face under the support bar of supporter 3 and, in same direction, tighten ball
Face band shoulder nut 6.The centre bore of taper platen 2 is installed screw rod 1 is installed, be arranged on supporter both sides with taking over a business 7, it is ensured that taper platen
2 cone sections and the taper-face contact of supporter 3, hexagon nut with flange 8 is installed on the threaded rod of screw rod 1 and applies screwing force, is adjusted many
Individual supporter 3 is moved radially, until container casing holds round the original form accuracy of recovery.The sphere on supporter 3 is unclamped successively
Band shoulder nut 6, removes setting disk 9, mounting flange workpiece and positioning disk 4, and screwing force, adjustment are applied by sphere band shoulder nut 6
Flange workpiece reaches welding requirements with the unfitness of butt joint at container casing side-wall hole.
Claims (7)
1. one kind, which is used for high pressure vessel areole flange welding, assembles device, it is characterised in that including screw rod, taper pressure
Disk, supporter, positioning disk, studs, take over a business, shape disk；Wherein：Take over a business to be located at the end face of the taper platen smaller diameter end
The two, is connected by place by screw rod；Multiple supporters are distributed on the circumferential surface of taper platen, and by taking over a business positioning；It is many
Individual setting disk is separately mounted on the end face of each supporter；
Take over a business to be located at the end of the taper platen smaller diameter end, the two is connected by screw rod；Multiple supporters are distributed on
On the circumferential surface of taper platen, and by taking over a business positioning；Multiple setting disks are separately mounted to the end of each supporter；
Moved radially in use, adjusting multiple supporters, by the setting disk installed in each supporter end face by workpiece housing
Hold round and reach after form accuracy requirement, each setting disk is removed successively, and be replaced by positioning disk；By sphere band shoulder nut to described
Positioning disk applies screwing force, to adjust flange workpiece and the unfitness of butt joint at container casing side-wall hole.
2. being used for high pressure vessel areole flange welding as claimed in claim 1 assembles device, it is characterised in that the cone
Shape platen outer surface is divided into isometrical section and cone section, and axial length of the axial length slightly larger than supporter of the taper platen；
Described isometrical section of external diameter is less than workpiece openings；The semi-cone angle of the cone section is 20 °, the axial length of axial length and supporter
It is identical.
3. being used for high pressure vessel areole flange welding as claimed in claim 1 assembles device, it is characterised in that the branch
Support body is made up of the installing plate of orthogonal support bar and rectangle；The support bar is located at the center of installing plate；The support bar
End face for taper platen bore section coordinate cambered surface, and the taper of the cambered surface with it is described bore section taper it is identical；It is described to install
The surface that plate is connected with support bar is plane, and another surface is the arc surface coordinated with high pressure vessel inner surface；Institute
Stating the edge of installing plate arc surface has annular groove, and the weld seam of workpiece is avoided by the annular groove.
4. being used for high pressure vessel areole flange welding as claimed in claim 1 assembles device, it is characterised in that positioning disk
For circle；There is the seam with work pieces mate at the positioning disk lower surface outer rim；There is arc groove at the center of the positioning disk；At this
There is the pilot hole of studs at the center of deep-slotted chip breaker；The circumferential surface of the positioning disk has the open slot radially extended, the open slot
Connected with the pilot hole.
5. being used for high pressure vessel areole flange welding as claimed in claim 1 assembles device, it is characterised in that described fixed
The diameter of shape disk is more than the diameter of workpiece perforate；There is arc groove at the center of the setting disk, for the location fit of nut, to increase
Plus contact surface of the sphere with shoulder nut with setting disk；There is the pilot hole of studs in the setting disk center；The positioning disk
Circumferential surface has the open slot radially extended, and the open slot is connected with the pilot hole；Have two in the circumferential surface of the positioning disk
The observation opening of individual U-shaped；One panel surface of the setting disk is the arc surface coordinated with the outer surface of workpiece.
6. being used for high pressure vessel areole flange welding as claimed in claim 1 assembles device, it is characterised in that the top
The external diameter of disk is less than the diameter of workpiece openings；The centre of surface that this is taken over a business is fluted, and the diameter of the groove is more than the cone
Isometrical section of external diameter on shape platen.
7. being used for high pressure vessel areole flange welding as claimed in claim 3 assembles device, it is characterised in that the peace
The direction for filling plate surface circular arc is consistent with the circumferencial direction of high pressure vessel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017101637171 | 2017-03-20 | ||
| CN201710163717 | 2017-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107199430A true CN107199430A (en) | 2017-09-26 |
Family
ID=59910796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710546157.8A Pending CN107199430A (en) | 2017-03-20 | 2017-07-06 | One kind is used for high pressure vessel areole flange welding and assembles device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107199430A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352194A (en) * | 2018-12-06 | 2019-02-19 | 中国航发贵州黎阳航空动力有限公司 | A kind of welding method of accumulator package |
| CN109570872A (en) * | 2018-12-23 | 2019-04-05 | 宁建阳 | A kind of large diameter thin wall case weld boss anti-deformation device |
| CN110434522A (en) * | 2019-06-26 | 2019-11-12 | 武汉船用机械有限责任公司 | The assembly tooling and assembly method of boat bucket spoon |
| CN111069856A (en) * | 2019-12-28 | 2020-04-28 | 天津航天长征火箭制造有限公司 | Assembling welding and shape and position size control method for 5-meter-diameter cylinder section flange |
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| CN101670498A (en) * | 2009-09-23 | 2010-03-17 | 中国航天科技集团公司长征机械厂 | Groove process and tooling for restricting welding deformation of aluminum alloy thin-wall ball and flange |
| CN203409470U (en) * | 2013-03-22 | 2014-01-29 | 江苏鼎盛重工有限公司 | Pre-weld reshaping aid for large-sized steel cylinder |
| JP2015152072A (en) * | 2014-02-13 | 2015-08-24 | 日鉄住金パイプライン＆エンジニアリング株式会社 | Mist scattering prevention tool and installation method of closing plug |
| CN205111350U (en) * | 2015-11-25 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | A device for controlling thin wall runner class parts machining warp |
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|---|---|---|---|---|
| CN101670498A (en) * | 2009-09-23 | 2010-03-17 | 中国航天科技集团公司长征机械厂 | Groove process and tooling for restricting welding deformation of aluminum alloy thin-wall ball and flange |
| CN203409470U (en) * | 2013-03-22 | 2014-01-29 | 江苏鼎盛重工有限公司 | Pre-weld reshaping aid for large-sized steel cylinder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352194A (en) * | 2018-12-06 | 2019-02-19 | 中国航发贵州黎阳航空动力有限公司 | A kind of welding method of accumulator package |
| CN109352194B (en) * | 2018-12-06 | 2021-01-22 | 中国航发贵州黎阳航空动力有限公司 | Welding method of pressure accumulator assembly |
| CN109570872A (en) * | 2018-12-23 | 2019-04-05 | 宁建阳 | A kind of large diameter thin wall case weld boss anti-deformation device |
| CN110434522A (en) * | 2019-06-26 | 2019-11-12 | 武汉船用机械有限责任公司 | The assembly tooling and assembly method of boat bucket spoon |
| CN110434522B (en) * | 2019-06-26 | 2021-08-24 | 武汉船用机械有限责任公司 | Assembling tool and assembling method for reverse navigation bucket spoon |
| CN111069856A (en) * | 2019-12-28 | 2020-04-28 | 天津航天长征火箭制造有限公司 | Assembling welding and shape and position size control method for 5-meter-diameter cylinder section flange |
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