CN107378366B - A kind of gas turbine casing welding tooling - Google Patents
A kind of gas turbine casing welding tooling Download PDFInfo
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- CN107378366B CN107378366B CN201710517611.7A CN201710517611A CN107378366B CN 107378366 B CN107378366 B CN 107378366B CN 201710517611 A CN201710517611 A CN 201710517611A CN 107378366 B CN107378366 B CN 107378366B
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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
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of gas turbine casing welding toolings, belong to welding tooling field.The welding tooling includes clamp assemblies and support base, clamp assemblies include support shaft, adjustable limiting part and two blocks of side plates, two pieces of side plate parallel intervals are sleeved in support shaft, adjustable limiting part can along support shaft axially and movably setting in support shaft, side plate of the adjustable limiting part for that can be moved in two blocks of side plates of backstop, structure is mounted there are two being respectively provided on every block of side plate, two support base interval settings, two support bases are used to support clamp assemblies, limited support structure is equipped on each support base, so as to by adjusting adjustable limiting part, change the maximum spacing between two blocks of side plates, it is clamped between two blocks of side plates after two and half cylinders of casing are docked, two blocks of side plates are respectively supported on two support bases, convenient for being welded to casing, due to clamping casing by two blocks of side plates, can to avoid horizontal flange with It is relatively moved between half cylinder.
Description
Technical field
The present invention relates to welding tooling field, in particular to a kind of gas turbine casing welding tooling.
Background technique
Gas turbine casing is on gas turbine for installing the tubular shell of impeller.The gas turbine casing of opposite opened is
A kind of relatively conventional case structure.The gas turbine casing of opposite opened includes two and half cylinders, and two and half cylinders can dock
At the cylinder of a completion, the water for being equipped with and extending along half tubular axis direction is respectively corresponded on the side that two and half cylinders are mutually butted
Plane face flange by the way that the horizontal flange on two and half cylinders to be mutually aligned, then is bolted connection in docking.
Welded connecting is generallyd use between horizontal flange and half cylinder, since the required precision of casing is higher, in welding water
When plane face flange, the lesser electron beam welding of welding deformation degree is generallyd use.When being welded, need to place two and half cylinders
At mated condition, it is aligned the horizontal flange of two and half cylinders, and horizontal flange is aligned with the edge of half cylinder, then passes through electronics
Horizontal flange and half barrel soldering are integrated by beam weldering.
But since casing size is larger, in weld horizontal flange and half cylinder, it is difficult to keep horizontal flange and half
Body it is opposing stationary, therefore welding quality is poor.
Summary of the invention
In order to solve the problems, such as that existing gas turbine casing welding quality is poor, the embodiment of the invention provides a kind of combustion gas
Turbine casing welding tooling.The technical solution is as follows:
The embodiment of the invention provides a kind of gas turbine casing welding tooling, the welding tooling include clamp assemblies and
Two support bases, the clamp assemblies include support shaft, adjustable limiting part and two blocks of side plates, two blocks of side plates parallel interval set
In the support shaft, and at least one piece in two blocks of side plates can along the axial activity of the support shaft, it is described can
Adjust locating part can along the support shaft axially and movably setting in the support shaft, the adjustable limiting part be used for backstop institute
State the side plate that can be moved in two blocks of side plates, be respectively provided on every block of side plate there are two be mounted structure, described two
A limit installation structure is symmetrical about the axis centre of the support shaft, described two support base interval settings, and described two
Support seat is used to support the clamp assemblies, is equipped with limited support structure on each support base, in described two support bases
A support base limited support structure be used for and one block of side plate in two blocks of side plates limit installation structure cooperate, institute
The limited support structure for stating another support base in two support bases is used for and another block of side plate in two blocks of side plates
Structure cooperation is mounted, each limit installation structure includes spacing block set, and the spacing block set is located at the side plate
Edge, each limited support structure includes two supporting tables being arranged at intervals on the support base, described two
Supporting table is used to support the edge of the side plate, and the spacing block set is for being connected between described two supporting tables.
Further, postive stop baffle, the limiting block in the same support base are provided in each supporting table
Plate is in the same plane, and the postive stop baffle in two different support bases is parallel to each other, and two different branch
It is equal to support the distance between two opposite faces of spacing and two blocks of side plates between the postive stop baffle in seat.
Preferably, the postive stop baffle is detachably connected with the supporting table.
Preferably, the welding tooling further includes tool base plate, and described two support bases are arranged in the tool base plate.
Optionally, the multiple groups connecting hole for connecting the support base, the support base are provided in the tool base plate
It is mounted in the tool base plate by one group of connecting hole in the multiple groups connecting hole.
Preferably, the adjustable limiting part includes spacing collar, and the spacing collar and the support shaft coaxial threaded connect
It connects, two blocks of side plates are respectively positioned on the same end of the spacing collar, the close spacing collar in two blocks of side plates
One block of side plate can be along the axial activity of the support shaft.
Further, lightening hole is respectively arranged on two blocks of side plates.
Preferably, vertical range, the support shaft of the end face of described support shaft one end and closer one block of side plate
The vertical range of the end face of the other end and closer one block of side plate is all larger than 0.
Preferably, the welding tooling further includes multiple buckles, and the buckle is used for two and half cylinders of clamping casing
The horizontal flange being mutually butted.
Technical solution provided in an embodiment of the present invention has the benefit that by the way that clamping is arranged on two support bases
Component wherein at least has one since clamp assemblies include support shaft, adjustable limiting part and two blocks of side plates being sleeved in support shaft
Block side plate can be used for the transportable one block of side plate of backstop along the axial movement of support shaft, adjustable limiting part, so as to
By adjusting adjustable limiting part, change the maximum spacing between two blocks of side plates, is clamped in after two and half cylinders of casing are docked
Between two blocks of side plates.Due to being respectively provided on two blocks of side plates there are two structure is mounted, limit is provided on two support bases
Support construction, so as to by the way that two blocks of side plates are respectively supported on two support bases, convenient for being welded to casing, simultaneously
Since on same side plate, two limit installation structures are symmetrical about the axis centre of support shaft, so as to complete half cylinder
After the welding of a line, clamp assemblies are overturn 180 °, the another a line of double of cylinder is welded, due to passing through two blocks of side plates
Casing is clamped, can be relatively moved to avoid between horizontal flange and half cylinder, so as to improve the precision of welding, and just
It is welded in two sides of double of cylinder, is conducive to improve welding efficiency.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of gas turbine casing provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of gas turbine casing welding tooling provided in an embodiment of the present invention；
Fig. 3 is a kind of side view of gas turbine casing welding tooling provided in an embodiment of the present invention；
Fig. 4 is a kind of sectional view of buckle provided in an embodiment of the present invention；
Fig. 5 is a kind of welding schematic diagram of casing provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
To facilitate the understanding of the present invention, gas turbine casing is briefly described herein.
Fig. 1 is a kind of structural schematic diagram of gas turbine casing provided in an embodiment of the present invention.As shown in Figure 1, the combustion gas
Turbine casing 10 includes half cylinder 11 of two pairings, and the axial direction being provided on the side of half cylinder, 11 pairing along half cylinder 11 is prolonged
The horizontal flange 12 stretched, two and half cylinders 11 are connected by horizontal flange 12, and horizontal flange 12 and half cylinder 11 are welded to connect, this
The welding tooling of invention is used for weld horizontal flange 12 and half cylinder 11.The material phase of the material of horizontal flange 12 and half cylinder 11
Together, can be to avoid the pollution between dissimilar metal, the problem of causing strength reduction.
Fig. 2 is a kind of structural schematic diagram of gas turbine casing welding tooling provided in an embodiment of the present invention.Such as Fig. 2 institute
Show, which includes clamp assemblies 20 and two support bases 30.Clamp assemblies 20 include support shaft 21, adjustable limiting part 22
With two blocks of side plates 23.Two pieces of 23 parallel intervals of side plate are sleeved in support shaft 21, and at least one piece in two blocks of side plates 23 can
Along the axial activity of support shaft 21, adjustable limiting part 22 can along support shaft 21 axially and movably setting in support shaft 21, can
Adjust side plate 23 of the locating part 22 for that can move in two blocks of side plates 23 of backstop.
Fig. 3 is a kind of side view of gas turbine casing welding tooling provided in an embodiment of the present invention.As shown in figure 3, every
It is respectively provided on block side plate there are two structure is mounted, two limit installation structures are symmetrical about the axis centre of support shaft 21.
Two interval of support base 30 settings, two support bases 30 are used to support clamp assemblies 20, are equipped with limit on each support base 30
Support construction.The limited support structure of a support base 30 in two support bases 30 is used for and one piece of side in two blocks of side plates 23
The limit installation structure of plate 23 cooperates, and the limited support structure of another support base 30 in two support bases 30 is used for and two pieces
The limit installation structure of another block of side plate 23 in side plate 23 cooperates.
The embodiment of the present invention is by being arranged clamp assemblies on two support bases, since clamp assemblies include support shaft, can
The two blocks of side plates adjusting locating part and being sleeved in support shaft, wherein at least have one block of side plate that can move along the axial direction of support shaft
Dynamic, adjustable limiting part is used for the transportable one block of side plate of backstop, so as to change two pieces of sides by adjusting adjustable limiting part
Maximum spacing between plate is clamped between two blocks of side plates after docking two and half cylinders of casing.Due to equal on two blocks of side plates
Setting is provided with limited support structure on two support bases there are two structure is mounted, so as to by by two pieces of sides
Plate is respectively supported on two support bases, convenient for being welded to casing, simultaneously because on same side plate, two limit installation knots
Structure is symmetrical about the axis centre of support shaft, so as to which after the welding for completing half cylinder a line, clamp assemblies are overturn
180 °, the another a line of double of cylinder is welded, can be to avoid horizontal flange and half due to clamping casing by two blocks of side plates
It is relatively moved between cylinder, so as to improve the precision of welding, and is welded, had convenient for two sides of double of cylinder
Conducive to raising welding efficiency.
As shown in Fig. 2, welding tooling can also include multiple buckles 50, buckle 50 is used for two and half cylinders of clamping casing
On the horizontal flange 12 that is mutually butted.Mutually matched two horizontal flanges 12 are snapped together by buckle 50, Ke Yifang
Just it welds.
Fig. 4 is a kind of sectional view of buckle provided in an embodiment of the present invention, as shown in figure 4, the section of buckle 50 can be in U
Type, so as to be interference fit between buckle 50 and horizontal flange 12 by two 12 clampings of horizontal flange.The quantity of buckle 50
It can be configured according to the size of casing, for biggish casing, horizontal flange 12 is longer, and more buckle can be set
50, it is on the contrary then less buckle 50 can be set.
As shown in Fig. 2, the end face of 21 one end of support shaft and vertical range, the support shaft 21 of closer one block of side plate 23 are another
The vertical range of the end face at end and closer one block of side plate 23 is all larger than 0.So that the both ends of support shaft 21 are stretched out two
It, can be in order to being lifted to clamp assemblies 20 except block side plate 23.
Optionally, adjustable limiting part 22 may include spacing collar 221, spacing collar 221 and 21 coaxial threaded of support shaft
Connection, two blocks of side plates 23 are respectively positioned on the same end of spacing collar 221, and one piece of the close spacing collar 221 in two blocks of side plates 23
Side plate 23 can be along the axial activity of support shaft 21.It can be with rotary spacing sleeve after being clipped in casing between two blocks of side plates 23
221, side plate 23 is pressed on the end face of casing by spacing collar 221, to clamp casing.
When realization, spacing collar 221 can be tool internal thread tube-like piece, be also possible to nut.Adjustable limiting part 22
It can also include disc spring 222, disc spring 222 is arranged between spacing collar 221 and side plate 23, and disc spring 222 can be in welding process
In there is welding deformation, when casing being caused to shrink, make side plate 23 remain to clamp casing, avoid casing from loosening.
In two blocks of side plates 23, one block of side plate 23 far from spacing collar 221 can be bolted in support shaft 21,
Specifically, it can be coaxially disposed flange 211 in support shaft 21, one block of side plate 23 far from spacing collar 221 passes through with flange 211
It is bolted, in order to the dismantling of tooling.
As shown in Fig. 2, each limit installation structure may each comprise spacing block set 231, spacing block set 231 is located at side plate 23
Edge, each limited support structure may each comprise two supporting tables 31 being arranged at intervals on support base 30, two supports
Platform 31 is used to support the edge of side plate 23, and spacing block set 231 is for being connected between two supporting tables 31.To which group will be being clamped
It, can be to avoid clamp assemblies by the way that spacing block set 231 to be stuck between two supporting tables 31 after part 20 is placed on support base 30
20 move.
When realization, two blocks of side plates 23 can be process by circular slab, by along the parallel of one piece of circular slab and
Two string incising circular plates positioned at a diameter two sides, can be obtained one block of side plate, facilitate production.Wherein, shape is cut along flat-cut
At cut surface 23c can be used for being supported in two supporting tables 31, spacing block set 231 can be set on cut surface 23c, limit
Position convex block 231 and side plate 23 can also be integrally formed by being welded to connect.
Further, postive stop baffle 311, the limit in the same support base 30 can be set in each supporting table 31
Baffle 311 is in the same plane, and the postive stop baffle 311 in two different support bases 30 is parallel to each other, and different two
The spacing between postive stop baffle 311 in support base 30 is equal with the distance between two opposite faces of two blocks of side plates 23.When
When clamp assemblies 20 are placed on support base 30, two blocks of side plates 23 are respectively positioned between the postive stop baffle 311 on two support bases 30,
Postive stop baffle 311 can be contacted with the opposite surface of two blocks of side plates 23, to limit clamp assemblies 20 along the axial direction of support shaft 21
Displacement, keeps clamp assemblies 20 more stable, convenient for welding.
Further, postive stop baffle 311 is detachably connected with supporting table 31.Clamp assemblies 20 are being lifted into support base 30
Before upper, first the postive stop baffle 311 on a support base 30 can be installed, clamp assemblies 20 are being lifted into support base 30
After upper, the postive stop baffle 311 on another support base 30 can be installed on support base 30 again, in order to postive stop baffle 311
Installation.
Specifically, postive stop baffle 311 is bolted with supporting table 31, and postive stop baffle 311 is mounted on two supports
On the side wall of platform 31 being located remotely from each other, another branch can be installed after clamp assemblies 20 are lifted on support base 30 in this way
When supportting the postive stop baffle 311 on seat 30, postive stop baffle 311 can be pressed on side plate 23 by turning bolt.
In addition, gasket can be set on the surface for contacting with side plate 23 of postive stop baffle 311, to guarantee to compress side
Plate 23, while the surface of the damage side plate 23 of postive stop baffle 311 can also be avoided.Wherein gasket can be sheet rubber.
By on casing clamping to clamp assemblies 20 and after being placed in supporting table 31, limiting block can be detected by clearance gauge
Spacing between plate 311 and side plate 23, side plate 23 and casing, two horizontal flanges being bonded to each other, to determine the assembly of casing
It is whether qualified, it is ensured that the casing composite demand after welding.Such as 0.1mm is less than it may be considered that dress by the gap that clearance gauge measures
With qualification.Then gap can choose slightly larger one to spacing for regional area, such as between two horizontal flanges being bonded to each other
A bit, such as 0.15mm or so.
As shown in Fig. 2, welding tooling can also include tool base plate 32, two support bases 30 are arranged in tool base plate 32
On.Tool base plate 32 can be used for fixing two support bases 30, avoid in the welding process support base 30 move.
Specifically, the multiple groups connecting hole 321 for connecting support seat 30, support base 30 can be set in tool base plate 32
It is mounted in tool base plate 32 by one group of connecting hole 321 in multiple groups connecting hole 321.By by support base 30 and tool base plate
The connecting hole 321 of different location on 32 connects, so as to adjust the spacing between two support bases 30.Due to different combustions
The length of gas-turbine casing is different, when welding different gas turbine casings, by different gas turbine casing clamping to folder
It holds on component, position that adjustable limiting part 22 is adjustable is different, and the spacing between two blocks of side plates 23 is also different, therefore can be with
Two support bases 30 are connect by selection with the connecting hole 321 of suitable position in tool base plate 32, so that between two support bases 30
Spacing adapt to two blocks of side plates 23, so that welding tooling be made to can be adapted for different casings.
As shown in figure 3, lightening hole 23a can be respectively arranged on two blocks of side plates 23.To reduce the weight of clamp assemblies 20,
Convenient for being lifted in welding to clamp assemblies 20.
In addition, arc-shaped seam allowance 23d can be set on the opposite surface of two blocks of side plates 23, and when clamping casing, two
Block side plate 23 can be cooperated by the end face of arc-shaped seam allowance 23d and casing 10.Half cylinder is avoided to loosen.
Circumferential position limiting structure is also provided on side plate 23, it is mobile with the circumferential direction for limiting casing.
Specifically, keyway 23b can be set on the edge of side plate 23.Flat key 232 is movably set in keyway 23b, due to
It is typically provided on the outer wall of casing with keyway, therefore keyway 23b can be set on side plate 23, by rotating casing, make side
Keyway 23b on plate 23 is aligned with the keyway on casing outer wall, in the keyway 23b and casing being inserted into flat key 232 on side plate 23
In keyway on outer wall, so as to limit the circumferential direction movement of casing.
It is contemplated that in other embodiments, dowel hole and positioning pin can also be arranged on side plate 23, pass through
Rotation casing is aligned the hole having on dowel hole and casing both ends, and is inserted into positioning pin, to realize that the circumferential direction to casing limits
Position.Kong Shiying on selection casing selects hole identical with dowel hole diameter.
Fig. 5 is a kind of welding schematic diagram of casing provided in an embodiment of the present invention, as shown in figure 5, when welding casing, it can
Two and half cylinder pairings of casing to be hung contact with each other two 50 connections of horizontal flange buckle in clamp assemblies 20
After being attached on support base 30, spot welding (solid dot in such as Fig. 5) first can be carried out between horizontal flange 12 and half cylinder, so as to
In welding, horizontal flange shift position is avoided.
In addition, before welding, can the edge to-be-welded region of double of cylinder polish, to remove removing oxide layer.It beats
The width for grinding region can be 20mm, and polishing standard metallic luster position occurs with polishing region.The polishing of casing can pass through
Stainless steel wire roller is polished, and can effectively remove oxide skin, while can be easy to polish excessively to avoid plain wheel
Problem.
Before polishing, demagnetization processing can also be carried out to workpiece and welding tooling, to remove workpiece and welding tooling
Magnetism avoids magnetism from impacting electron beam welding process, and welding tooling can be preferably made of austenitic stainless steel material,
The material has the characteristics that non-magnetic.It also needs to clean casing simultaneously, it, specifically can be with to remove the spot on casing surface
It is cleaned using white silk silk and anhydrous propanone or industrial rectified spirit.It, can also be using the electricity defocused before welding
Beamlet preheats weld, to reduce weld crack.
After the installation, clamping of completion casing, casing can be sent into welding room together with welding tooling and carry out electricity
Beamlet weldering.It can also anneal after welding has been completed to casing, to reduce the stress in casing.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of gas turbine casing welding tooling, which is characterized in that the welding tooling includes clamp assemblies (20) and two
Support base (30), the clamp assemblies (20) include support shaft (21), adjustable limiting part (22) and two pieces of side plates (23), and described two
Block side plate (23) parallel interval is sleeved on the support shaft (21), and at least one piece in two blocks of side plates (23) being capable of edge
The axial activity of the support shaft (21), the adjustable limiting part (22) can be along the axially and movably setting of the support shaft (21)
On the support shaft (21), the adjustable limiting part (22) is described for that can move in two pieces of side plates (23) described in backstop
Side plate (23) is respectively provided on every block of side plate there are two structure is mounted, and described two limit installation structures are about described
The axis centre of support shaft (21) is symmetrical, and the setting of described two support base (30) intervals, described two support bases (30) are for branch
It supports the clamp assemblies (20), limited support structure, described two support bases (30) is equipped on each support base (30)
In a support base (30) limited support structure for limit with one piece of side plate (23) in two blocks of side plates (23)
The limited support structure of mounting structure cooperation, another support base (30) in described two support bases (30) is used for and described two
The limit installation structure of another piece of side plate (23) in block side plate (23) cooperates, and each limit installation structure includes limit
Convex block (231), the spacing block set (231) are located at the edge of the side plate (23), and each limited support structure includes
Two supporting tables (31) being arranged at intervals on the support base (30), described two supporting tables (31) are used to support the side plate
(23) edge, the spacing block set (231) is for being connected between described two supporting tables (31).
2. gas turbine casing welding tooling according to claim 1, which is characterized in that on each supporting table (31)
It is provided with postive stop baffle (311), the postive stop baffle (311) in the same support base (30) is in the same plane, no
Postive stop baffle (311) in two same support bases (30) is parallel to each other, and in two different support bases (30)
Postive stop baffle (311) between the distance between two opposite faces of spacing and two blocks of side plates (23) it is equal.
3. gas turbine casing welding tooling according to claim 2, which is characterized in that the postive stop baffle (311) with
The supporting table (31) is detachably connected.
4. gas turbine casing welding tooling according to claim 1, which is characterized in that the welding tooling further includes work
It fills bottom plate (32), described two support bases (30) are arranged on the tool base plate (32).
5. gas turbine casing welding tooling according to claim 4, which is characterized in that set on the tool base plate (32)
It is equipped with the multiple groups connecting hole (321) for connecting the support base (30), the support base (30) passes through the multiple groups connecting hole
(321) one group of connecting hole (321) in is mounted on the tool base plate (32).
6. gas turbine casing welding tooling according to claim 1, which is characterized in that adjustable limiting part (22) packet
It includes spacing collar (221), the spacing collar (221) connect with the support shaft (21) coaxial threaded, two blocks of side plates
(23) it is respectively positioned on the same end of the spacing collar (221), close the spacing collar (221) in two blocks of side plates (23)
One piece of side plate (23) can be along the axial activity of the support shaft (21).
7. gas turbine casing welding tooling according to claim 1, which is characterized in that divide on two blocks of side plates (23)
It is not provided with lightening hole (23a).
8. gas turbine casing welding tooling according to claim 1, which is characterized in that described support shaft (21) one end
The vertical range of end face and the closer one piece side plate (23), the end face of the support shaft (21) other end and closer one piece
The vertical range of the side plate (23) is all larger than 0.
9. gas turbine casing welding tooling according to claim 1, which is characterized in that the welding tooling further includes more
A buckle (50), the horizontal flange (12) that the buckle (50) is mutually butted on two and half cylinders of clamping casing.
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| CN201710517611.7A CN107378366B (en) | 2017-06-29 | 2017-06-29 | A kind of gas turbine casing welding tooling |
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| CN201710517611.7A CN107378366B (en) | 2017-06-29 | 2017-06-29 | A kind of gas turbine casing welding tooling |
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| CN107378366B true CN107378366B (en) | 2019-06-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107984177B (en) * | 2017-12-19 | 2019-09-03 | 中国航发南方工业有限公司 | Split Casing simulating piece processing method |
| CN110125700B (en) * | 2019-03-26 | 2020-08-25 | 武汉船用机械有限责任公司 | Positioning tool for eccentric boss of gas turbine casing |
| CN110560987B (en) * | 2019-07-23 | 2021-10-08 | 武汉船用机械有限责任公司 | Welding tool and welding method for gas turbine intercooler shell |
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