CN105499797B - Supporting device for laser cladding of large side-holed thin-walled workpiece - Google Patents
Supporting device for laser cladding of large side-holed thin-walled workpiece Download PDFInfo
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- CN105499797B CN105499797B CN201610096214.2A CN201610096214A CN105499797B CN 105499797 B CN105499797 B CN 105499797B CN 201610096214 A CN201610096214 A CN 201610096214A CN 105499797 B CN105499797 B CN 105499797B
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- shaft
- wall part
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- 238000004372 laser cladding Methods 0.000 title abstract description 6
- 238000000576 coating method Methods 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000002844 melting Methods 0.000 claims description 23
- 230000008018 melting Effects 0.000 claims description 23
- 101710144202 Probable soluble pyridine nucleotide transhydrogenase Proteins 0.000 description 49
- 101710165942 Soluble pyridine nucleotide transhydrogenase Proteins 0.000 description 49
- 238000000034 method Methods 0.000 description 10
- 238000005253 cladding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0823—Devices involving rotation of the workpiece
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a supporting device for laser cladding of a large side-holed thin-walled workpiece. The supporting device comprises a supporting shaft, a main shaft and a supporting part, wherein the supporting shaft is fixedly connected with a driving shaft, and the center line of the supporting shaft is arranged in parallel with that of the driving shaft; the main shaft is connected with the supporting shaft in a positioned mode through a connecting structure, the center line of the main shaft coincides with that of the driving shaft, and when the supporting device is used, the main shaft is placed in the side-holed thin-walled workpiece and is connected with the supporting shaft stretching in through a hole of the side-holed thin-walled workpiece through the connecting structure; the side-holed thin-walled workpiece is supported by the supporting part in the radial direction, the supporting part is provided with a supporting ring matched with the inner diameter of the side-holed thin-walled workpiece, and the supporting part is connected with the main shaft and rotates along with the main shaft to drive the side-holed thin-walled workpiece to rotate together. The side-holed thin-walled workpiece can be effectively supported and driven to rotate, and laser cladding of the large side-holed thin-walled workpiece is completed.
Description
Technical field
The present invention relates to the support meanss used by a kind of laser melting coating, more particularly to a kind of large-scale STH thin-wall part swashs
Support meanss used by light cladding.
Background technology
It is thermal source in one layer of cladding material of substrate surface cladding with the laser of high-energy-density that laser melt coating technique to be, is allowed to
Metallurgical binding is realized with base material, the surface for having the alloy-layer of entirely different composition and performance with base material in substrate surface formation changes
Property method.The technology integrates rapid prototyping technique and laser melting coating process for modifying surface, is capable of achieving 3-dimensional metal zero
The reparation of part and without the need for processing mold.In aviation field, the price of spare parts of aero-engine is very high, thus ties up under many circumstances
It is that comparison is calculated to repair part, but the quality of part must is fulfilled for safety requirements after repairing.For example, properller blade table
When occurring damaging on face, it is necessary to repaired by some process for treating surface.Except considering the height required by propeller blade
Intensity, high fatigue durability, it is necessary to consider the corrosion resistance after surface reconditioning, laser melting and coating technique just can be applied well
In this.In addition, laser melting and coating technique can also be in turbine blade, housing bonded block, large thin-wall revolving meber etc. zero
It is applied in the reparation of part.
Require to support reliable and turn round steady in processing in view of some large thin-wall rotary work pieces can be run in production,
One solution is supported on the benchmark circumference of large thin-wall rotary work piece using two pair rollers of left and right, two pair roller frame of left and right
Roller center distance it is consistent, and the axial line of left and right turning rolls upper roller overlaps, to ensure that workpiece installs back axis line and solid
Determine work top parallel.Due to above-mentioned support be large-scale support, connection matrix require it is higher, be ensure installation accuracy connection matrix
Overall structure need to be adopted, is made troubles to installation.And for the large thin-wall rotary work piece of some STHs, supporting construction is particularly
Reliability important, that supporting construction is not only considered, also needs to consider the stability of rotation of main shaft.
Accordingly, it would be desirable to the support meanss used by a kind of large-scale STH thin-wall part laser melting coating.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of large-scale STH thin-wall part swashs
Support meanss used by light cladding, lack effective for solving the medium-and-large-sized STH thin-wall part of prior art in laser melting coating
The problem of support.
For achieving the above object and other related purposes, the present invention provides a kind of large-scale STH thin-wall part laser melting coating institute
Support meanss, the support meanss include：
The support shaft being fixedly linked with drive shaft, the centrage of the support shaft are set with the centerline parallel of the drive shaft
Put；
Main shaft, is connected with support shaft positioning by attachment structure, and the centrage of the main shaft and the drive shaft
Centrage
Overlap, during use, the main shaft is placed in the STH thin-wall part, and with the perforate from STH thin-wall part in
The institute for stretching into
State support shaft to be connected by the attachment structure；
The support member of radial support is carried out to STH thin-wall part, on the support member with the STH thin-wall part
Internal diameter phase
The bracing ring matched somebody with somebody, the support member are connected with the main shaft, and with main axis and then drive the STH thin
Wall pieces are together
Rotate.
Preferably, the bracing ring is spliced to form by multi-section circular arc section, every section of arc section with a telescopic extensible member
It is connected, the end of all extensible members is each attached on same axle sleeve, and the main shaft is located in the axle sleeve.
Preferably, the extensible member is telescopic cylinder.
Preferably, the attachment structure is included being connected with the main shaft connector of tubbiness, and is located in the support
Screw rod in axle, the bottom of the connector have screwed hole, and during use, the end of the support shaft is plugged in the connector
Interior, the screw flight is fixed in the screwed hole and then support shaft and the connector is fixedly linked.
Preferably, the connector is conically shaped, and the end of the support shaft is the taper matched with the conically shaped.
Preferably, there is the first via and the second via, the screw rod is located in the first via and the in the support shaft
In two vias, and there is on the screw rod being located between the first via and the second via the limiting section for radially extending.
Preferably, the main shaft and the support shaft are hollow structure.
Preferably, the support shaft is fixedly linked with the drive shaft by connecting plate.
As described above, the support meanss used by the large-scale STH thin-wall part laser melting coating of the present invention, with following beneficial
Effect：Drive shaft is deviateed using support shaft, support shaft is stretched into from STH inside STH thin-wall part with this, used
When only then again support shaft need to be connected with main shaft in the good support member of large-scale STH thin-wall part internal adjustment and main shaft, can
Realize that drive shaft drives main axis, and then drive large-scale STH thin-wall part to rotate so as to coordinate with laser head and complete cladding,
Rotation for thin-walled parts in laser cladding process provides support.
Description of the drawings
Fig. 1 is shown as the schematic diagram of large-scale STH thin-wall part.
Fig. 2 is shown as the support meanss schematic diagram used by the large-scale STH thin-wall part laser melting coating of the present invention.
Fig. 3 is shown as the support shaft schematic diagram of the present invention.
Fig. 4 is shown as the screw rod schematic diagram of the present invention.
Fig. 5 is shown as the main shaft schematic diagram of the present invention.
Fig. 6 is shown as the support member schematic diagram of the present invention.
Component label instructions
1 STH thin-wall part
11 perforates
2 main shafts
21 connectors
22 screwed holes
3 support shafts
The end of 31 support shafts
32 first vias
33
4 screw rods
41 limiting sections
42 external screw threads
5 tighten nut
6 bushings
7 support members
71 arc sections
72 extensible members
73 axle sleeves
8 screws
9 connecting plates
10 bolts
12 location-plates
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Refer to Fig. 1 to Fig. 6.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to
Coordinate the content disclosed in description, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualificationss applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where effect that can be generated of the invention and the purpose that can be reached is not affected, still all should fall in disclosed skill
In the range of art content can cover.Meanwhile, in this specification it is cited as " on ", D score, "left", "right", " centre " and
The term of " one " etc., is merely convenient to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness
It is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
The present invention provides the support meanss used by a kind of large-scale STH thin-wall part laser melting coating, STH thin-wall part 1
As shown in figure 1, perforate 11 deviates the center of thin-wall part, the support meanss of the present invention are for being swashed in STH thin-wall part for structure
Radial support is carried out during light cladding to STH thin-wall part, and drives STH thin-wall part to rotate to coordinate laser head to complete to melt
Cover, the support meanss include：As shown in Figure 2,
The support shaft 3 being fixedly linked with drive shaft, the centrage of support shaft 3 are arranged with the centerline parallel of drive shaft, i.e.,
The centrage of support shaft deviates the centrage of drive shaft；
Main shaft 2, is connected with the positioning of the support shaft 3 by attachment structure, and the centrage of the main shaft 2 and the driving
Axle
Centrage overlap, during use, the main shaft 2 is placed in the STH thin-wall part, and with from STH thin-wall part
In perforate
The support shaft 3 for stretching into is connected by the attachment structure；
The support member 7 of radial support is carried out to STH thin-wall part, as shown in Figure 6, on the support member 7 with it is described
Open side
The bracing ring that hole thin-wall part internal diameter matches, the support member 7 are connected with the main shaft 2, and with main shaft 2 rotate into
And band
Move the STH thin-wall part to rotate together.
The present invention deviates drive shaft using support shaft, support shaft is stretched into from STH in STH thin-wall part with this
Portion, makes
Used time only need to be in the good support member of large-scale STH thin-wall part internal adjustment and main shaft, then again by support shaft and main shaft
It is connected, i.e.,
Can realize that drive shaft drives main axis, and then drive large-scale STH thin-wall part to rotate so as to match somebody with somebody with laser head
Conjunction completes to melt
Cover, the rotation for thin-walled parts in laser cladding process provides support.
The concrete structure of each part is detailed below.
As shown in fig. 6, above-mentioned bracing ring is spliced to form by multi-section circular arc section 71, every section of arc section 71 is telescopic with one
Extensible member 72 is connected, and the extensible member 72 in the present embodiment is telescopic cylinder, or hydraulic jack, the end of all extensible members 72
Portion is each attached on same axle sleeve 73, and the main shaft 2 is located in (as shown in Figure 2) in the axle sleeve 73.In the present embodiment
Bracing ring is spliced by the arc section of multistage independence, and every section of arc section is connected with extensible member, so can be with generation processing
STH thin-wall part inner chamber size and shape be adjusted, to adapt to the support of the STH thin-wall part of any shape；
Also the support degree to STH thin-wall part is improved, increases stability of strutting system.Above-mentioned support member is alternatively other structures, as long as energy
Realization is played a supporting role to STH thin-wall part inwall.
Above-mentioned attachment structure is included being connected with the main shaft 2 connector 21 (as shown in Figure 5) of tubbiness, and is located in institute
The screw rod 4 (as shown in Figure 2) in support shaft 3 is stated, the bottom of connector 21 has screwed hole 22, during use, as shown in Figure 2,
The end of support axle 3 is plugged in the connector 21, and the screw rod 4 is threadedly secured in support shaft in the screwed hole 22 further
3 and the connector 21 be fixedly linked, will main shaft and support shaft be fixedly linked.For ease of operation, the length of above-mentioned screw rod 4 with
The length of support shaft 3 matches, when the connector 21 on the end insertion main shaft 2 of support shaft 3, can be in the another of support shaft 3
Nut 5 is tightened using stubborn the setting on screw rod 4 in end, and it is fixed in screwed hole 22 enter screw rod 4 to tighten nut 5 by rotation.
For ease of above-mentioned support shaft end insertion connector in, above-mentioned connector 21 be conically shaped (as shown in Figure 5), institute
The end 31 (as shown in Figure 3) for stating support shaft is the taper matched with the conically shaped, is led here with taper itself is good
Tropism, make two taper surfaces can self direction, support shaft is easily inserted in connector.
As shown in Figures 2 and 3, there is the first via 32 and the second via, the screw rod in the support shaft 3 in the present embodiment
4 are located in the first via 32 and the second via, and are prolonging with radial direction on the screw rod 4 between the first via and the second via
The limiting section 41 (as shown in Figure 4) stretched.It is located in support shaft for ease of screw rod in the present embodiment, as shown in Figure 2, above-mentioned second
Via is arranged on by the location-plate 12 being fixed in support shaft 3 by screw 8, to play the protection to above-mentioned screw rod, the
Bushing 6 is equipped with screw rod between one via and the second via also.The concrete structure of screw rod as shown in Figure 4, in the end of screw rod
There is on its outer surface external screw thread 42, the external screw thread 42 is matched with the female thread in above-mentioned screwed hole.Propping up in the present embodiment
Support axle can be formed by welding by one section of cylindrical section and one section of conical section.
Above-mentioned main shaft 2 and the support shaft 3 are hollow structure.Hollow structure, can keep away when main shaft rotates at a high speed
Exempt from that rotator inertia is huge, improve the stationarity that large-scale STH thin-wall part rotates start-stop.
As shown in Figures 2 and 3, above-mentioned support shaft 3 is fixedly linked with the drive shaft by connecting plate 9, and connecting plate 9 passes through
Bolt 10 is fixed with drive shaft, and connecting plate 9 is welded and fixed with support shaft 3.Drive axis are consistent with the axis of main shaft 2, can lead to
Overdrive the rotation of axle, drive support shaft to rotate around drive axis, so as to drive the main shaft 2 being connected with support shaft 3 to rotate, most
Drive STH thin-wall part to rotate around the axis of main shaft 2 by support member 7 eventually, match somebody with somebody with the laser head on the outside of STH thin-wall part
Close, complete the laser melting coating at position to be processed.
The specifically used process of support meanss used by the large-scale STH thin-wall part laser melting coating of the present invention is as follows：See Fig. 1
And shown in Fig. 2, during use, operator are entered from the perforate 11 of STH thin-wall part 1, and support member 7 is adjusted makes support
Circle is farthest contacted with the inwall of STH thin-wall part, is played most strong support, main shaft 2 is connected with support member 7, most
Afterwards support shaft 3 is inserted into being connected with main shaft 2 from perforate 11, support shaft 3 is connected with drive shaft by connecting plate 9, all parts
After being connected, you can drive drive shaft turns, support member 7 is driven by main shaft 2 and then drives STH thin-wall part 1 to rotate,
Coordinate with the laser head on the outside of STH thin-wall part, complete the laser melting coating at position to be processed.
In sum, the support meanss used by large-scale STH thin-wall part laser melting coating of the invention, inclined using support shaft
From drive shaft, support shaft is stretched into from STH inside STH thin-wall part with this, only need to open in large-scale side when in use
Then support shaft is connected by the good support member of hole thin-wall part internal adjustment and main shaft again with main shaft, can realize that drive shaft drives master
Axle is rotated, and then drives large-scale STH thin-wall part to rotate so as to is coordinated with laser head and is completed cladding, in being laser cladding process
The rotation of thin-walled parts provides support.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial
Value.
The principle and its effect of above-described embodiment only illustrative present invention, it is of the invention not for limiting.It is any ripe
The personage for knowing this technology all can carry out modifications and changes to above-described embodiment under the spirit and the scope without prejudice to the present invention.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (8)
1. support meanss used by a kind of large-scale STH thin-wall part laser melting coating, it is characterised in that the support meanss include：
The support shaft (3) being fixedly linked with drive shaft, the centrage of the support shaft (3) and the centerline parallel of the drive shaft
Arrange；
Main shaft (2), is connected with the support shaft (3) positioning by attachment structure, and the centrage of the main shaft (2) and the drive
The centrage of moving axis overlaps, and during use, the main shaft (2) is placed in the STH thin-wall part (1), and with from STH thin-walled
The support shaft (3) stretched in the perforate (11) of part is connected by the attachment structure；
The support member (7) of radial support is carried out to STH thin-wall part (1), on the support member (7) with the STH
The bracing ring that thin-wall part internal diameter matches, the support member (7) are connected with the main shaft (2), and are rotated with main shaft (2) and then band
Move the STH thin-wall part (1) to rotate together.
2. support meanss used by large-scale STH thin-wall part laser melting coating according to claim 1, it is characterised in that：Institute
State bracing ring to be spliced to form by multi-section circular arc section (71), every section of arc section (71) is connected with a telescopic extensible member (72),
The end of all extensible members (72) is each attached on same axle sleeve (73), and the main shaft (2) is located in the axle sleeve.
3. support meanss used by large-scale STH thin-wall part laser melting coating according to claim 2, it is characterised in that：Institute
It is telescopic cylinder to state extensible member (72).
4. support meanss used by large-scale STH thin-wall part laser melting coating according to claim 1, it is characterised in that：Institute
Stating attachment structure is included being connected with the main shaft (2) connector (21) of tubbiness, and the spiral shell being located in the support shaft (3)
Bar (4), the bottom of the connector (21) have screwed hole (22), and during use, the end of the support shaft (3) is plugged in described
In connector (21), the screw rod (4) is threadedly secured in support shaft (3) and the connector in the screwed hole (22) further
(21) it is fixedly linked.
5. support meanss used by large-scale STH thin-wall part laser melting coating according to claim 4, it is characterised in that：Institute
It is conically shaped to state connector (21), and the end of the support shaft (3) is the taper matched with the conically shaped.
6. support meanss used by large-scale STH thin-wall part laser melting coating according to claim 4, it is characterised in that：Institute
State, the screw rod (4) is located in the first via (32) and the second mistake
In hole, and there is on the screw rod (4) being located between the first via (32) and the second via the limiting section (41) for radially extending.
7. support meanss used by large-scale STH thin-wall part laser melting coating according to claim 1, it is characterised in that：Institute
State main shaft (2) and the support shaft (3) is hollow structure.
8. support meanss used by large-scale STH thin-wall part laser melting coating according to claim 1, it is characterised in that：Institute
State support shaft (3) to be fixedly linked by connecting plate (9) and the drive shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096214.2A CN105499797B (en) | 2016-02-22 | 2016-02-22 | Supporting device for laser cladding of large side-holed thin-walled workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096214.2A CN105499797B (en) | 2016-02-22 | 2016-02-22 | Supporting device for laser cladding of large side-holed thin-walled workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105499797A CN105499797A (en) | 2016-04-20 |
| CN105499797B true CN105499797B (en) | 2017-04-19 |
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| CN203003341U (en) * | 2012-12-18 | 2013-06-19 | 上海航天设备制造总厂 | Blending friction welding tool of aluminum alloy long and thin straight cylinder |
| CN103331622A (en) * | 2013-06-28 | 2013-10-02 | 侯马市东鑫机械铸造有限公司 | Pneumatic positioning and clamping device for processing crankshaft connecting rod |
| CN203419985U (en) * | 2013-08-29 | 2014-02-05 | 浙江工贸职业技术学院 | Coating machining and positioning device of ball valve ball body |
| CN104368894A (en) * | 2014-10-20 | 2015-02-25 | 天津市大千管业有限公司 | Large-diameter cylindrical metal part girth welding self-centering system and application method thereof |
| CN204277342U (en) * | 2014-12-12 | 2015-04-22 | 威海克莱特菲尔风机股份有限公司 | Stainless sheet steel axial flow air duct welding tooling |
| CN105112906A (en) * | 2015-06-25 | 2015-12-02 | 北京电子科技职业学院 | Pipe inner wall laser cladding device |
| CN105132915A (en) * | 2015-09-29 | 2015-12-09 | 浙江工贸职业技术学院 | Positioning device for laser cladding processing of inner surface of ball valve ball body |
| CN205393784U (en) * | 2016-02-22 | 2016-07-27 | 上海拓宝机电科技有限公司 | Support arrangement for large -scale side trompil thin wall spare laser cladding is used |
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