CN106735977A - A kind of supporting plate built-up welding anti-deformation device and the method using its built-up welding - Google Patents
A kind of supporting plate built-up welding anti-deformation device and the method using its built-up welding Download PDFInfo
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- CN106735977A CN106735977A CN201710038217.5A CN201710038217A CN106735977A CN 106735977 A CN106735977 A CN 106735977A CN 201710038217 A CN201710038217 A CN 201710038217A CN 106735977 A CN106735977 A CN 106735977A
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- supporting plate
- welding
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a kind of supporting plate built-up welding anti-deformation device, the device includes anti-deformation part and the keeper being arranged on its surface, wherein, anti-deformation part includes the cover plate (2) of transition rings (1) and connection fixed thereto；Keeper includes guide pile (3) and fastener (4), keeper is set on anti-deformation part surface, the present invention also provides a kind of method for carrying out built-up welding to supporting plate using the anti-deformation device, the method is by after the ad-hoc location that be fixed on for supporting plate on anti-deformation part by keeper, automatic surfacing is carried out to supporting plate using automatic welder, without causing supporting plate Bending Deformation.
Description
Technical field
The present invention relates to nuclear power generating equipment manufacture field, more particularly to a kind of thin Circular Plate built-up welding of the major diameter of stainless steel
When anti-deformation device and its application method.
Background technology
Supporting plate is a kind of major diameter, small in the passive residual heat removal heat exchanger tube board component of compressed water reactor nuclear power equipment
The poor stainless steel annulus of thickness, rigidity, requires that the upper and lower surface of supporting plate and circle end face need built-up welding not in product design
Rust steel overlay cladding, when built-up welding is carried out, easily there is face flexural deformation in supporting plate, i.e. supporting plate becomes after being heated under heat effect
The on-plane surface for curved surface, causes it to lose supporting role；In addition, the inside and outside footpath of supporting plate between the heap-type different model product
Size and thickness are all different, and common anti-deformation device does not have versatility.
Therefore, how to ensure that supporting plate is not deformed upon in built-up welding, while it is logical to have distortion-free apparatus and method
It is the technical barrier for needing to solve with property.
The content of the invention
In order to solve the above problems, present inventor has performed studying with keen determination, as a result find：Set on anti-deformation part surface
Keeper, by after the ad-hoc location that be fixed on for supporting plate on anti-deformation part by keeper, you can using automatic welder to support
Plate carries out automatic surfacing, without causing supporting plate Bending Deformation, so as to complete the present invention.
It is an object of the invention to provide following several respects：
A kind of first aspect, there is provided supporting plate built-up welding anti-deformation device, it is characterised in that the device include anti-deformation part and
The keeper on its surface is arranged at, wherein,
Anti-deformation part includes the cover plate 2 of transition rings 1 and connection fixed thereto；
Keeper includes guide pile 3 and fastener 4；
Preferably, the lower surface of cover plate 2 is provided with reinforcing ring 21 and reinforcement 22.
Second aspect, the present invention also provides a kind of method of supporting plate built-up welding, it is characterised in that methods described includes following
Step：
Step 1, transition rings 1 are aligned with the upper surface of cover plate 2, make the center overlapping of axles of transition rings 1 and cover plate 2, in transition
Built-up welding is carried out on the step that ring 1 is formed with the outer rim of cover plate 2, is carried out on the step that the inner edge of transition rings 1 is formed with the upper surface of cover plate 2
Built-up welding, built-up welding is carried out on the step that the first mounting hole 12 and the second mounting hole 23 are formed；
Step 2, the appropriate guide pile 3 of selection external diameter is fixed to the upper surface of transition rings 1 by fastener 4, by supporting plate 5
Be installed on the upper surface of transition rings 1, and the inwall of supporting plate 5 is fastened in the outer rim of all guide piles 3, the inner edge of supporting plate 5 with
Built-up welding is carried out on the step that the upper surface of transition rings 1 is formed；
Step 3, built-up welding is carried out using automatic welder to the upper surface of supporting plate 5；
Step 4, removes the overlay cladding between the inner edge of supporting plate 5 and the upper surface of transition rings 1, and turning-over support plate 5, makes support
The lower surface of plate 5 is exposed, and upper surface connects with transition rings 1, and reinforcement plate is set inside the first mounting hole 12 and the second mounting hole 23
6, wherein, the one end of reinforcement plate 6 is welded with supporting plate 5, and the other end is welded with cover plate 2；
Step 5, built-up welding is carried out using automatic welder to the lower surface of supporting plate 5；
Step 6, built-up welding is carried out to the side wall of supporting plate 5；
Preferably, before built-up welding is carried out to the side wall of supporting plate 5, reinforcement plate 6 is split with supporting plate 5 and cover plate 2, more preferably
Ground, the side wall to supporting plate 5 carries out artificial built-up welding.
Brief description of the drawings
Fig. 1 shows the top view of anti-deformation device of the present invention；
Fig. 2 shows the structural representation of mounting hole；
Fig. 3 shows the radial cutaway view of anti-deformation device of the present invention.
Drawing reference numeral explanation：
1- transition rings
11- location holes
The mounting holes of 12- first
2- cover plates
21- reinforcing rings
22- reinforcements
The mounting holes of 23- second
24- hangers
3- guide piles
4- fasteners
5- supporting plates
6- reinforcement plates
Specific embodiment
Below by the present invention is described in detail, the features and advantages of the invention will become more with these explanations
For clear, clear and definite.
Special word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the drawings
In terms of kind, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
In the description of the invention, it is necessary to explanation, term " on ", D score, " interior ", " outward ", "front", "rear", " left side "
The orientation or position relationship of instructions such as " right sides " are based on the orientation or position relationship under working condition of the present invention, merely to just
Described in the description present invention and simplifying, rather than indicate imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.Additionally, term " first ", " second ", "
Three " and " the 4th " be only used for describe purpose, and it is not intended that indicate or imply relative importance.
The present invention described below.
In the present invention, the supporting plate 5 of built-up welding is treated for the less circular ring metal plate of thickness, thereon lower surface and side
When carrying out built-up welding, supporting plate 5 is susceptible to face flexural deformation, i.e. supporting plate 5 is changed into curved surface from plane, but, radially
Dilatation is smaller, i.e., the width of annulus hardly changes because of built-up welding.
In the present invention, supporting plate 5 needs to carry out three surface build-up weldings, i.e. top surface, lateral surface and bottom surface, wherein, top surface and bottom
Face be along the peripheral annual built-up welding of supporting plate 5, and, top surface built-up welding area is maximum, and secondly built-up welding area in bottom surface, about pushes up
The 1/4 of surface build-up welding area, side built-up welding area is minimum.
According to the present invention, there is provided a kind of built-up welding anti-deformation device of supporting plate 5, it is characterised in that the device includes anti-deformation
Part and the keeper being arranged on its surface.
In the present invention, the anti-deformation part includes the cover plate 2 of transition rings 1 and connection fixed thereto.
In the present invention, the transition rings 1 are annular slab, the external diameter of the external diameter slightly larger than supporting plate 5 of transition rings 1, transition
Internal diameter of the internal diameter of ring 1 less than supporting plate 5.
In the present invention, multiple location holes 11 are offered in transition rings 1.
In the present invention is a kind of preferred embodiment, as shown in figure 1, three are at least distributed with same reference circle
Location hole 11, it is preferable that the location hole 11 on same reference circle is equally distributed, is easy to supporting plate 5 in anti-deformation device
On installation.
In the present invention, the reference circle refers to concentric with transition rings 1 circle on the surface of transition rings 1.
In the present invention, keeper is respectively arranged with location hole 11, the outer rim of keeper forms the first reference circle,
In the present invention, the first indexing diameter of a circle is equal with the internal diameter of supporting plate 5, so as to play the effect spacing to supporting plate 5, makes branch
Fagging 5 when being assembled with anti-deformation device, can easily centering center, it is coaxial with anti-deformation device.
In a kind of implementation method being more highly preferred to of the present invention, multiple location holes 11 form the of at least two different-diameters
One division is justified, so that anti-deformation device is applied to different size, the built-up welding of the supporting plate 5 of different inner diameters.
Preferably, the location hole is screwed hole.
In the present invention, locating piece position is set according to the location hole on different-diameter reference circle such that it is able to meet right
Anti-deformation support during different size 5 built-up welding of supporting plate, i.e. make the anti-deformation device that there is versatility.
In the present invention, multiple first waists are offered and the outer rim of transition rings 1 between on the outside of the first reference circle in transition rings 1
Shape hole 12, it is preferable that the geometric center of multiple first mounting holes 12 forms the second reference circle, it is highly preferred that the first mounting hole 12
It is equally distributed on the second reference circle, it is further preferred that the aperture of multiple first mounting holes 12 is equal.
In the present invention, the mounting hole refers to that the middle part of cross section is rectangle or square, and two ends are respectively half
Circle, wherein, the half diameter of a circle cylinder hole equal with rectangle or foursquare width.
In the present invention, mounting hole and non-circular hole are set in transition rings 1, are easy to carry out heap to the another side of supporting plate 5
During weldering, reinforcement plate 6 is welded between supporting plate 5 and transition rings 1.
It is straight where the short axle of any cross section of first mounting hole 12 in the present invention is a kind of preferred embodiment
Line by transition rings 1 central shaft.
In the present invention, the major axis of any cross section of first mounting hole 12 refers to X-direction as shown in Figure 2
Symmetry axis, the short axle of any cross section of first mounting hole 12 refers to the symmetry axis of Y direction as shown in Figure 2.
In the present invention is a kind of preferred embodiment, the transition rings 1 are stainless steels or can directly be connect with supporting plate 5
Touch and material that welding is allowed, so as to ensure that in manufacture to cleannes and antipollution requirement.
However, stainless steel or with supporting plate 5 can directly contact and welding allow material intensity it is small, to supporting plate 5
Anti-deformation effect is weak, therefore, in the present invention, cover plate 2 is further fixedly arranged on below transition rings 1.
In the present invention, the cover plate 2 is circular slab, and it is composite carbon steel, it is preferable that the thickness of cover plate 2 is more than
80mm, more preferably greater than 100mm.
In the present invention, the external diameter of the cover plate 2 is slightly larger than the external diameter of transition rings 1, so that the outer rim of cover plate 2 and transition
The outer rim of ring 1 forms the step for being easy to welding.
In the present invention, on cover plate 2, the second waist is offered on the position corresponding with the first mounting hole in transition rings 1
Shape hole 23, it is preferable that the first mounting hole 12 is concentric with the second mounting hole 23, i.e. indexing where the geometric center of the second mounting hole 23
The equal diameters of reference circle where diameter of a circle and the geometric center of the first mounting hole 12；It is highly preferred that the hole of the second mounting hole 23
Footpath is slightly larger than the aperture of the first mounting hole 12, so that the first mounting hole 12 and the second mounting hole 23 form the platform for being easy to welding
Rank.
The present inventors have additionally discovered that, the first mounting hole 12 and the second mounting hole 23 can discharge built-up welding generation in weld deposit process
Heat.
In the present invention is a kind of preferred embodiment, as shown in figure 3, set being fixed with reinforcing ring in the lower surface of cover plate 2
21 and reinforcement 22.
In the present invention, the reinforcing ring 21 is cylindrical metal cylinder, it is preferable that reinforcing ring 21 is composite carbon steel,
It is highly preferred that the straight line where the central shaft of reinforcing ring 21 overlaps with the straight line where the central shaft of cover plate 2.
In the present invention, the external diameter of reinforcing ring 21 is 1/9~1/5, preferably the 1/7~1/6 of the external diameter of cover plate 2.
In the present invention, in the periphery of reinforcing ring 21, a plurality of reinforcement 22 is fixedly installed in the lower surface of cover plate 2, it is described to add
Strong muscle 22 is metallic plate, it is preferable that reinforcement 22 is composite carbon steel, and reinforcement 22 has in the one end near the edge of cover plate 2
There is chamfering.
In the present invention, the inner of the reinforcement 22 is fixedly connected with the outer wall of reinforcing ring 21, and bottom is fixed with cover plate 2 and connected
Connect, it is preferable that the outer end of reinforcement 22 is equal with the outer rim of cover plate 2；It is highly preferred that being radially arranged along cover plate 2 of reinforcement 22,
So as to increase the distortion-free effect of cover plate 2.
In the present invention is a kind of preferred embodiment, reinforcement 22 is through the gap the second mounting hole 23.
In the present invention, multiple hangers 24 are additionally provided with the upper surface of cover plate 2, preferably across the hollow space of transition rings 1,
It is highly preferred that hanger 24 is symmetrical arranged, in order to supporting plate 5 is lifted on positioner.
In the present invention, the keeper includes guide pile 3 and fastener 4, wherein, the guide pile 3 is cylinder gold
Category block, its center offers the through hole through fastener 4, and guide pile 3 is fixed on the upper surface of transition rings 1 by fastener 4；It is described
Fastener 4 is bolt.
In the present invention, when location hole 11 is when opening up position and being unsuitable for the internal diameter of supporting plate 5, regulation guide pile 3 it is outer
Footpath is meeting the positioning to supporting plate 5.
In the present invention is a kind of preferred embodiment, the first indexing diameter of a circle where the outer rim of guide pile 3 is equal to branch
The internal diameter of fagging 5, it is preferable that after guide pile 3 is installed in different location holes 11, can form the first indexing of different-diameter
Circle, is easy to centering of the different inner diameters supporting plate 5 on anti-deformation device.
In the present invention is a kind of preferred embodiment, guide pile 3 is integrally formed with fastener 4.
In the present invention is a kind of preferred embodiment, the anti-deformation device also includes reinforcement plate 6, the reinforcement plate 6
It is L-type metallic plate.
The inventors discovered that, when the bottom surface to supporting plate 5 carries out built-up welding, because built-up welding area is small, by supporting plate 5 and lid
Plate 2 is fixedly connected by reinforcement plate 6, and is no longer welded supporting plate 5 and transition rings 1, can equally be played to branch
The effect that fagging 5 is fixed, but also aftertreatment technology can be simplified, improve operating efficiency.
According to another aspect of the present invention, there is provided a kind of method of the built-up welding of supporting plate 5, the method is comprised the following steps：
Step 1, transition rings 1 are aligned with the upper surface of cover plate 2, make the center overlapping of axles of transition rings 1 and cover plate 2, in transition
Built-up welding is carried out on the step that ring 1 is formed with the outer rim of cover plate 2, is carried out on the step that the inner edge of transition rings 1 is formed with the upper surface of cover plate 2
Built-up welding, built-up welding is carried out on the step that the first mounting hole 12 and the second mounting hole 23 are formed；
Step 2, the appropriate guide pile 3 of selection external diameter is fixed to the upper surface of transition rings 1 by fastener 4, by supporting plate 5
Be installed on the upper surface of transition rings 1, and the inwall of supporting plate 5 is fastened in the outer rim of all guide piles 3, the inner edge of supporting plate 5 with
Built-up welding is carried out on the step that the upper surface of transition rings 1 is formed；
Step 3, built-up welding is carried out using automatic welder to the upper surface of supporting plate 5；
Step 4, removes the overlay cladding between the inner edge of supporting plate 5 and the upper surface of transition rings 1, and turning-over support plate 5, makes support
The lower surface of plate 5 is exposed, and upper surface connects with transition rings 1, and reinforcement plate is set inside the first mounting hole 12 and the second mounting hole 23
6, wherein, the one end of reinforcement plate 6 is welded with supporting plate 5, and the other end is welded with cover plate 2；
Step 5, built-up welding is carried out using automatic welder to the lower surface of supporting plate 5；
Step 6, built-up welding is carried out to the side wall of supporting plate 5.
In the present invention is a kind of preferred embodiment, before built-up welding is carried out to the side wall of supporting plate 5, by reinforcement plate 6 and branch
Fagging 5 and cover plate 2 are split, it is to avoid supporting plate 5 is welded as a whole with transition rings 1 when built-up welding is carried out to the side wall of supporting plate 5, increase
Plus postprocessing working procedures, so as to improve operating efficiency.
In a kind of implementation method being more highly preferred to of the present invention, the side wall to supporting plate 5 carries out artificial built-up welding.
The scope of operation of the side wall built-up welding of supporting plate 5 is small, and workload is small, and when carrying out built-up welding to the side wall of supporting plate 5, supporting plate 5
Deformation is not susceptible to, it is therefore possible to use artificial built-up welding.
The built-up welding anti-deformation device of the supporting plate provided according to the present invention, has the advantages that：
(1) anti-deformation device structure is novel in the present invention, there is enough rigidity, can be repeated several times utilization, manufacturing cost compared with
It is low；
(2) raw material of anti-deformation device main body can be most common ordinary carbon steel, wide material sources in the present invention；
(3) keeper in the present invention can ensure the axiality of supporting plate and anti-deformation device, it is ensured that supporting plate energy
Enough cooperation welding machines on slewing carry out automatic surfacing.
(4) anti-deformation device in the present invention efficiently solves the built-up welding deformation of major diameter, the stainless steel annulus of small thickness
Problem, it is ensured that tube sheet component subsequently manufactures being smoothed out for work.
The present invention has been described in detail above in association with specific embodiment and exemplary example, but these explanations are simultaneously
It is not considered as limiting the invention.It will be appreciated by those skilled in the art that without departing from the spirit and scope of the invention,
Various equivalencings, modification can be carried out to technical solution of the present invention and embodiments thereof or is improved, these each fall within the present invention
In the range of.Protection scope of the present invention is determined by the appended claims.
Claims (10)
1. a kind of supporting plate built-up welding anti-deformation device, it is characterised in that the device includes anti-deformation part and is arranged on its surface
Keeper, wherein,
Anti-deformation part includes the cover plate (2) of transition rings (1) and connection fixed thereto.
2. anti-deformation device according to claim 1, it is characterised in that the transition rings (1) are annular slab, transition rings
(1) external diameter is slightly larger than the external diameter of supporting plate (5), the internal diameter of the internal diameter less than supporting plate (5) of transition rings (1).
3. anti-deformation device according to claim 1, it is characterised in that offer multiple location holes in transition rings (1)
(11)；And/or
Three location holes (11) are at least distributed with same reference circle；And/or
Multiple location holes (11) form the first reference circle of at least two different-diameters；And/or
In transition rings (1) multiple first mounting holes (12) are offered between the first reference circle outside and transition rings (1) outer rim.
4. anti-deformation device according to claim 1, it is characterised in that
The cover plate (2) is circular slab, and it is composite carbon steel；And/or
External diameter of the external diameter of the cover plate (2) slightly larger than transition rings (1).
5. first on anti-deformation device according to claim 1, it is characterised in that on cover plate (2), with transition rings (1)
The second mounting hole (23) is offered on the corresponding position of mounting hole；And/or
Cover plate (2) lower surface is provided with reinforcing ring (21) and reinforcement (22).
6. anti-deformation device according to claim 1, it is characterised in that the reinforcing ring (21) is cylindrical metal cylinder；
And/or
The reinforcement (22) is metallic plate；And/or
Reinforcement (22) has chamfering in the one end near cover plate (2) edge；And/or
Multiple hangers (24) are additionally provided with cover plate (2) upper surface.
7. according to the anti-deformation device that one of claim 1 to 6 is described, it is characterised in that the keeper includes guide pile (3)
With fastener (4),
Preferably, the anti-deformation device also includes reinforcement plate (6).
8. anti-deformation device according to claim 7, it is characterised in that the guide pile (3) is cylindrical metal block, its
Center offers the through hole through fastener (4), and guide pile (3) is fixed on transition rings (1) upper surface by fastener (4)；With/
Or
The fastener (4) is bolt；And/or
The reinforcement plate (6) is L-type metallic plate.
9. a kind of method of supporting plate built-up welding, it is characterised in that the described method comprises the following steps：
Step 1, transition rings (1) are aligned with cover plate (2) upper surface, make the center overlapping of axles of transition rings (1) and cover plate (2),
Built-up welding is carried out on the step that transition rings (1) are formed with cover plate (2) outer rim, is formed with cover plate (2) upper surface in transition rings (1) inner edge
Step on carry out built-up welding, carry out built-up welding on the step that the first mounting hole (12) and the second mounting hole (23) are formed；
Step 2, the appropriate guide pile (3) of selection external diameter is fixed to the upper surface of transition rings (1) by fastener (4), will support
Plate (5) is installed on transition rings (1) upper surface, and the inwall of supporting plate (5) is fastened in the outer rim of all guide piles (3), in branch
Built-up welding is carried out on the step that fagging (5) inner edge is formed with transition rings (1) upper surface；
Step 3, built-up welding is carried out using automatic welder to supporting plate (5) upper surface；
Step 4, removes the overlay cladding between supporting plate (5) inner edge and transition rings (1) upper surface, and turning-over support plate (5), makes branch
Fagging (5) lower surface is exposed, and upper surface connects with transition rings (1), internal in the first mounting hole (12) and the second mounting hole (23)
Reinforcement plate (6) is set, wherein, reinforcement plate (6) one end is welded with supporting plate (5), and the other end is welded with cover plate (2)；
Step 5, built-up welding is carried out using automatic welder to supporting plate (5) lower surface；
Step 6, built-up welding is carried out to supporting plate (5) side wall.
10. method according to claim 9, it is characterised in that after step 5, before step 6, by reinforcement plate (6) with
Supporting plate (5) and cover plate (2) are split, it is highly preferred that carrying out artificial built-up welding to the side wall of supporting plate (5).
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| CN201710038217.5A CN106735977B (en) | 2017-01-19 | 2017-01-19 | Support plate surfacing anti-deformation device and surfacing method using same |
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| CN201710038217.5A CN106735977B (en) | 2017-01-19 | 2017-01-19 | Support plate surfacing anti-deformation device and surfacing method using same |
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Cited By (2)
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| CN109570877A (en) * | 2018-12-29 | 2019-04-05 | 哈电集团（秦皇岛）重型装备有限公司 | A method of it preventing the device of tube sheet built-up welding deformation and it is utilized to carry out built-up welding |
| CN110480041A (en) * | 2018-05-15 | 2019-11-22 | 西安泰富西玛电机有限公司 | A kind of one knife vehicle device of electric machine flange end cap |
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| KR101395313B1 (en) * | 2013-08-14 | 2014-05-16 | 이용준 | Jig apparatus for welding of wifer housing for sterilization device of ballast water |
| CN206435877U (en) * | 2017-01-19 | 2017-08-25 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of supporting plate built-up welding anti-deformation device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110480041A (en) * | 2018-05-15 | 2019-11-22 | 西安泰富西玛电机有限公司 | A kind of one knife vehicle device of electric machine flange end cap |
| CN109570877A (en) * | 2018-12-29 | 2019-04-05 | 哈电集团（秦皇岛）重型装备有限公司 | A method of it preventing the device of tube sheet built-up welding deformation and it is utilized to carry out built-up welding |
| CN109570877B (en) * | 2018-12-29 | 2024-04-19 | 哈电集团（秦皇岛）重型装备有限公司 | Device for preventing tube plate from surfacing deformation and surfacing method using device |
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| CN106735977B (en) | 2022-05-20 |
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