CN106312321A - Partial vacuum pipeline circumferential weld laser-welding device and welding method based on welding device - Google Patents
Partial vacuum pipeline circumferential weld laser-welding device and welding method based on welding device Download PDFInfo
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- CN106312321A CN106312321A CN201611009964.8A CN201611009964A CN106312321A CN 106312321 A CN106312321 A CN 106312321A CN 201611009964 A CN201611009964 A CN 201611009964A CN 106312321 A CN106312321 A CN 106312321A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
- B23K26/282—Seam welding of curved planar seams of tube sections
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/1224—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in vacuum
-
- 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
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a partial vacuum pipeline circumferential weld laser-welding device and a welding method based on the welding device, relates to the technical field of laser welding and aims at solving the problem that existing large-scale tubular product welding needs multi-layer multi-pass welding and electron beam welding is poor in feasibility. An external local vacuum housing is connected to the outer wall of a pipeline to be welded in a sleeved mode, and an external local vacuum chamber is formed between the external local vacuum housing and the pipeline to be welded. An inner local vacuum housing is embedded into the inner wall of the pipeline to be welded. The weld joint of the pipeline to be welded is located between the external local vacuum chamber and an internal local vacuum chamber. An open groove is formed in the peripheral direction of the external local vacuum housing, and a movable seal assembly is tightly matched with the open groove. A laser machining system is communicated with the external local vacuum chamber trough the movable seal assembly, and the laser emitted by the laser machining system penetrates through the open groove to be transmitted toward the weld joint of the pipeline to be welded. The movable seal assembly can drive the laser machining system to move along the open groove and keep the external local vacuum chamber sealed.
Description
Technical field
The invention belongs to laser welding technology field.
Background technology
Large scale, the pipeline of big thickness is widely used in petrochemical industry, marine industry and nuclear industry field.Especially in core work
Industry field, nuke rubbish is buried device etc. and is large scale, the pipeline of big thickness.These large scales, the pipeline circumferential weld of big thickness
Traditional welding method is argon tungsten-arc welding.Owing to thickness is relatively big, argon tungsten-arc welding need to carry out multi-layer multi-pass welding.In order to avoid splitting
Stricture of vagina, welding process needs preheating, and in order to ensure welding quality, before next layer welds, needs to carry out weld seam Non-Destructive Testing.
Single consideration from weldquality, vacuum electron beam welding is more satisfactory welding method.The single track of low_input_power can be realized
Welding.But this kind of pipeline construction stock size is bigger, feasibility that this kind of structure welds in vacuum chamber and economy are all
Poor.
The TWI of Britain proposes parital vacuum electro-beam welding method and advances the actual application of this technology, and in
State Patent publication No CN1422722 and CN2454075 also issues some parital vacuum Electron beam welding device and methods.But office
Portion's vacuum electron beam welding needs particular design to electron gun, and atmospheric molecule makes this technology to the scattering effect of electronics
Develop the slowest since the sixties in last century proposes.Recently as the appearance of high-power high-quality laser instrument, study people
Member finds, high power laser the most also can obtain the big depth-to-width ratio weld seam of similar electron beam welding, and vacuum laser weldering
Connecing and need not reach the high vacuum needed for electron beam welding, the most there is not atmospheric molecule to electronics in laser welding simultaneously
The problem of scattering, it is not necessary to ray protection.Based on above some, parital vacuum laser welding have huge development prospect and
Actual application value.
Summary of the invention
The present invention be in order to solve existing parital vacuum laser welding technology need to carry out multi-layer multi-pass welding, size relatively big and
The problem of poor feasibility, now provides a kind of pipeline circumferential weld parital vacuum laser soldering device and welding side based on this welder
Method.
A kind of pipeline circumferential weld parital vacuum laser soldering device, described device includes: laser-processing system, outer partial are true
Empty capsid 2-1, internal parital vacuum housing 3-1 and dynamic sealing assembly 4；
Outer partial vaccum case 2-1 is socketed in the outer wall of pipeline 6 to be welded, outer partial vaccum case 2-1 with treat welded tube
Outer partial vacuum chamber is formed between road 6；Internal parital vacuum housing 3-1 is embedded in the inwall of pipeline 6 to be welded, and internal local is true
Internal parital vacuum room is formed between empty capsid 3-1 and pipeline to be welded 6；The weld seam externally-located parital vacuum room of pipeline 6 to be welded
And between internal parital vacuum room；
Outer partial vaccum case 2-1 is annular, has an open slot 2-3 along its circumference, and dynamic sealing assembly 4 is opened with this
Mouth groove 2-3 closely cooperates；Laser-processing system is connected with outer partial vacuum chamber by dynamic sealing assembly 4 so that laser adds
The laser that work system sends forms weld seam through the open slot 2-3 directive pipeline to be welded 6 of annular；Dynamic sealing assembly 4 can drive
Laser-processing system is moved along open slot 2-3, makes laser complete welding in vacuum chamber, keeps outside office during welding
Portion's vacuum chamber seals.
Outer partial vacuum chamber and internal parital vacuum room utilize vacuum elements to carry out evacuation.
Vacuum elements includes air pump 5-1 and pump-line 5-2；Air pump 5-1 by pump-line 5-2 respectively with outside
Parital vacuum room is connected with internal parital vacuum room.
Laser-processing system includes laser instrument 1-1 and laser Machining head 1-2；The laser that laser instrument 1-1 sends passes through laser
Processing head 1-2 penetrates, and laser Machining head 1-2 puts in outer partial internal vacuum chamber by dynamic sealing assembly 4.
Outside O-ring seal 2-2, internal parital vacuum shell it is provided with between outer partial vaccum case 2-1 and pipeline to be welded 6
Inner sealing cushion rubber 3-2 it is provided with between body 3-1 and pipeline to be welded 6.
Dynamic sealing assembly 4 includes movable sealing cushion rubber 4-1, movable sealing controlling organization 4-2 and guiding mechanism 4-3；
Movable sealing cushion rubber 4-1 is fixed on the outside of open slot 2-3, for the sealing of outer partial vacuum chamber；
Movable sealing controlling organization 4-2 is open-topped box body, movable sealing controlling organization about 4-2 relative to two sidewalls
Being provided with opening 4-5, movable sealing controlling organization 4-2 utilizes two opening 4-5 to be buckled on movable sealing cushion rubber 4-1, this opening 4-5 with
Movable sealing cushion rubber 4-1 closely cooperates, and the box plate of this movable sealing controlling organization 4-2 has through hole 4-4, described through hole 4-4 and uses
In inserting laser Machining head 1-2；Guiding mechanism 4-3, and guiding mechanism it is provided with on the box plate of movable sealing controlling organization 4-2
4-3 is positioned at above or below through hole 4-4, and guiding mechanism 4-3 is used for guiding movable sealing cushion rubber 4-1 to avoid through hole 4-4.
Welding method based on above-mentioned welder, the method is:
Outside parital vacuum room and internal parital vacuum room are carried out evacuation；
Open laser-processing system, the laser beam of laser-processing system output and pipeline 6 relative motion to be welded so that laser
Shu Li forms weld seam all over whole pipeline 6 to be welded, completes to treat welded tube road 6 and welds.
Keep laser-processing system static, make pipeline 6 to be welded rotate for axle with its axis, complete laser-processing system output
The relative motion of laser beam and pipeline 6 to be welded.
Keeping pipeline 6 to be welded static, driving laser-processing system is moved along the weld seam of pipeline 6 to be welded, completes Laser Processing
The laser beam of system output and the relative motion of pipeline 6 to be welded.
The laser beam of laser-processing system output and pipeline 6 relative motion to be welded.
The present invention specifically has the beneficial effect that:
1, apparatus and method of the present invention compare the tungsten argon arc soldering method of conventional pipelines welding, it is not necessary to multilamellar multiple tracks
Welding, welding preheating and the Non-Destructive Testing of interlayer, it is possible to realize single track welding, there is feature rapidly and efficiently；
2, apparatus and method of the present invention are compared to vacuum electron beam welding method, for large-scale structure without large-scale
Vacuum chamber, solves the longer pumpdown time, and welding cost substantially reduces simultaneously；
3, apparatus and method of the present invention are simpler compared to parital vacuum Electron beam welding device, operability
Higher.
Accompanying drawing explanation
Fig. 1 is a kind of pipeline circumferential weld parital vacuum laser soldering device working state schematic representation of the present invention；
Fig. 2 is a kind of pipeline circumferential weld parital vacuum laser soldering device partial sectional view of the present invention；
Fig. 3 is the structural representation of the movable sealing controlling organization described in detailed description of the invention three；
Fig. 4 is the structural representation of the dynamic sealing assembly described in detailed description of the invention three.
Detailed description of the invention
Detailed description of the invention one: see figures.1.and.2 and illustrate present embodiment, a kind of pipe described in present embodiment
Road circular seam local vacuum laser welder, described device includes: laser-processing system, outer partial vaccum case 2-1, inside
Parital vacuum housing 3-1 and dynamic sealing assembly 4；
Outer partial vaccum case 2-1 is socketed in the outer wall of pipeline 6 to be welded, outer partial vaccum case 2-1 with treat welded tube
Outer partial vacuum chamber is formed between road 6；Internal parital vacuum housing 3-1 is embedded in the inwall of pipeline 6 to be welded, and internal local is true
Internal parital vacuum room is formed between empty capsid 3-1 and pipeline to be welded 6；The weld seam externally-located parital vacuum room of pipeline 6 to be welded
And between internal parital vacuum room.
Outer partial vacuum chamber and internal parital vacuum room utilize vacuum elements to carry out evacuation, and vacuum elements includes bleeding
Pump 5-1 and pump-line 5-2；Air pump 5-1 by pump-line 5-2 respectively with outer partial vacuum chamber and inside parital vacuum
Room is connected.Outside O-ring seal 2-2, internal parital vacuum assembly it is provided with between outer partial vacuum subassembly 2 and pipeline to be welded 6
Inner sealing cushion rubber 3-2 it is provided with between 3 and pipeline to be welded 6.
Outer partial vaccum case 2-1 is annular, has an open slot 2-3 along its circumference, and dynamic sealing assembly 4 is opened with this
Mouth groove 2-3 closely cooperates；Laser-processing system is connected with outer partial vacuum chamber by dynamic sealing assembly 4 so that laser adds
The laser that work system sends is through the weld seam of open slot 2-3 directive pipeline to be welded 6；Dynamic sealing assembly 4 can drive Laser Processing
System is moved along open slot 2-3, and keeps outer partial vacuum chamber to seal.
Pipeline to be welded 6 described in present embodiment generally large scale, big thickness pipeline or body, need girth welding.
In present embodiment, air pump 5-1 passes through the pump-line 5-2 suction interface respectively at inner vacuum vessel and outside
The suction interface of vacuum chamber is connected so that form parital vacuum environment around weld seam.Air pump is rotating machinery air pump, and it leads to
Cross pump-line to be connected with the suction interface of outer vacuum chamber respectively at the suction interface of inner vacuum vessel so that shape around weld seam
Become parital vacuum environment.
It is outside that external vacuum housing 2-1 is positioned at pipeline 6 to be welded, by sealing between outside O-ring seal 2-2 and workpiece 6,
Ensure the sealing of outer partial vacuum chamber.It is internal that inner vacuum housing 3-1 is positioned at pipeline 6 to be welded, by inner sealing cushion rubber
Seal between 3-2 and pipeline to be welded 6, it is ensured that the sealing of internal parital vacuum room.Around weld seam, form one seal space,
And extract system 5 is bled to sealing space, around weld seam, form parital vacuum.Laser Processing assembly coordinates dynamic sealing assembly
4, it is achieved laser enters outer partial vacuum chamber, and relies on the relative motion between pipeline 6 to be welded and laser-processing system 1 to realize
Parital vacuum laser machines.
Detailed description of the invention two: present embodiment is to a kind of pipeline circumferential weld parital vacuum described in detailed description of the invention one
Laser soldering device is further qualified, and in present embodiment, laser-processing system includes laser instrument 1-1 and laser Machining head 1-
2；The laser that laser instrument 1-1 sends is penetrated by laser Machining head 1-2, and laser Machining head 1-2 is by dynamic sealing assembly 4 and outside
Parital vacuum room is connected.
In present embodiment, laser instrument 1-1 is industrial laser 1-1, and described industrial laser 1-1 can be for laser
The CO2 laser instrument of welding, optical fiber laser or video disc laser instrument etc..Described laser Machining head 1-2 is industrial lasers processing head, example
As: Germany's PRECTICE YW52 laser Machining head.To with optical fiber laser and video disc laser instrument, industrial laser adds with laser
Fiber-optic transfer laser is used, for CO between foreman2Laser instrument uses hard optic path laser.
Detailed description of the invention three: illustrate present embodiment with reference to Fig. 3 and Fig. 4, present embodiment is to being embodied as
A kind of pipeline circumferential weld parital vacuum laser soldering device described in mode two is further qualified, in present embodiment, and movable sealing
Assembly 4 includes movable sealing cushion rubber 4-1, movable sealing controlling organization 4-2 and guiding mechanism 4-3；
Movable sealing cushion rubber 4-1 is fixed on the outside of open slot 2-3, for the sealing of outer partial vacuum chamber；
Movable sealing controlling organization 4-2 is open-topped box body, movable sealing controlling organization about 4-2 relative to two sidewalls
Being provided with opening 4-5, movable sealing controlling organization 4-2 utilizes two opening 4-5 to be buckled on movable sealing cushion rubber 4-1, this opening 4-5 with
Movable sealing cushion rubber 4-1 closely cooperates, and the box plate of this movable sealing controlling organization 4-2 has through hole 4-4, described through hole 4-4 and uses
In inserting laser Machining head 1-2；Guiding mechanism 4-3, and guiding mechanism it is provided with on the box plate of movable sealing controlling organization 4-2
4-3 is positioned at above or below through hole 4-4, and guiding mechanism 4-3 is used for guiding movable sealing cushion rubber 4-1 to avoid through hole 4-4.
In present embodiment, movable sealing cushion rubber 4-1 entirety embeds in the open slot 2-3 of outer partial vacuum chamber, movable sealing
Cushion rubber 4-1 the most also embeds in movable sealing controlling organization 4-2, is affected by guiding mechanism 4-3 in movable sealing controlling organization 4-2,
Have resilient movable sealing cushion rubber 4-1 inside movable sealing controlling organization 4-2, have the open slot being partially disengaged parital vacuum room,
Through hole 4-4 is exposed and passive seal cushion rubber 4-1 is not blocked.Movable sealing controlling organization 4-2 controls O-ring seal 4-1 and swashs
The cooperation of light processing head 1-2 so that during laser Machining head 1-2 and pipeline to be welded 6 occur relative motion, outer partial
On the open slot of vacuum chamber, laser alignment position seals bar departs from, and laser enters vacuum chamber, and other positions keep sealing, can be with shape
Become to meet the parital vacuum of parital vacuum laser welding, complete parital vacuum laser welding.
Detailed description of the invention four: the welding based on the welder described in detailed description of the invention one described in present embodiment
Method, in present embodiment, described welding method specifically includes following steps:
Step one, inside and outside pipeline 6 position to be welded to be welded, it is respectively mounted internal parital vacuum chamber component and outer partial is true
Empty chamber component, utilize static sealing ring 2-1 and static sealing ring 2-1 make respectively pipeline 6 to be welded and outer parital vacuum room housing 3-1 and
Good sealing is formed between pipeline 6 to be welded and interior parital vacuum room housing 3-1；
Step 2, install laser Machining head 1-2, movable sealing controlling organization 4-1 and movable sealing cushion rubber 4-2 so that three it
Between form excellent sealing, and can co-ordination；
Step 3, start vacuum air pump 5-1, respectively outside parital vacuum room and internal parital vacuum room are taken out very
Empty so that parital vacuum indoor reach certain partial vacuum；
Step 4, control laser instrument 1-1 go out light, keep laser head 1-2 to stand, and Collaborative Control movable sealing controls assembly 4-1
Move with certain speed with pipeline 6 relative laser processing head 1-2 to be welded so that laser entrance vacuum chamber completes Laser Welding and takes over
Journey；
After step 5, welding, parital vacuum device is pulled down around workpiece, complete whole circular seam local vacuum and swash
The light course of processing.
Detailed description of the invention five: the welding based on the welder described in detailed description of the invention one described in present embodiment
Method, in present embodiment, described welding method specifically includes following steps:
Step one, inside and outside pipeline 6 position to be welded to be welded, it is respectively mounted internal parital vacuum chamber component and outer partial is true
Empty chamber component, utilize static sealing ring 2-1 and static sealing ring 2-1 make respectively pipeline 6 to be welded and outer parital vacuum room housing 3-1 and
Good sealing is formed between pipeline 6 to be welded and interior parital vacuum room housing 3-1；
Step 2, install laser Machining head 1-2, movable sealing controlling organization 4-1 and movable sealing cushion rubber 4-2 so that three it
Between form excellent sealing, and can co-ordination；
Step 3, start vacuum air pump 5-1, respectively outside parital vacuum room and internal parital vacuum room are taken out very
Empty so that parital vacuum indoor reach certain partial vacuum；
Step 4, control laser instrument 1-1 go out light, keep pipeline 6 to be welded to stand, Collaborative Control laser head 1-2 and movable sealing
Control assembly 4-1 pipeline the most to be welded 6 to move with certain speed so that laser enters vacuum chamber and completes laser beam welding；
After step 5, welding, parital vacuum device is pulled down around workpiece, complete whole circular seam local vacuum and swash
The light course of processing.
Claims (10)
1. a pipeline circumferential weld parital vacuum laser soldering device, it is characterised in that described device includes: laser-processing system,
Outer partial vaccum case (2-1), internal parital vacuum housing (3-1) and dynamic sealing assembly (4)；
Outer partial vaccum case (2-1) is socketed in the outer wall of pipeline to be welded (6), and outer partial vaccum case (2-1) is with to be welded
Outer partial vacuum chamber is formed between pipeline (6)；Internal parital vacuum housing (3-1) is embedded in the inwall of pipeline to be welded (6), interior
Internal parital vacuum room is formed between portion's parital vacuum housing (3-1) and pipeline to be welded (6)；The weld seam of pipeline to be welded (6) is positioned at
Between outer partial vacuum chamber and internal parital vacuum room；
Outer partial vaccum case (2-1) is annular, has an open slot (2-3) along its circumference, dynamic sealing assembly (4) with should
Open slot (2-3) closely cooperates；Laser-processing system is connected with outer partial vacuum chamber by dynamic sealing assembly (4) so that
The laser that laser-processing system sends forms weld seam through open slot (2-3) directive pipeline to be welded (6) of annular；Dynamic sealing assembly
(4) laser-processing system can be driven to move along open slot (2-3), make laser complete welding in vacuum chamber, in the mistake of welding
Journey keep outer partial vacuum chamber seal.
A kind of pipeline circumferential weld parital vacuum laser soldering device the most according to claim 1, it is characterised in that outer partial
Vacuum chamber and internal parital vacuum room utilize vacuum elements to carry out evacuation.
A kind of pipeline circumferential weld parital vacuum laser soldering device the most according to claim 2, it is characterised in that vacuum elements
Including air pump (5-1) and pump-line (5-2)；Air pump (5-1) by pump-line (5-2) respectively with outer partial vacuum
Room is connected with internal parital vacuum room.
A kind of pipeline circumferential weld parital vacuum laser soldering device the most according to claim 1 and 2, it is characterised in that laser
System of processing includes laser instrument (1-1) and laser Machining head (1-2)；The laser that laser instrument (1-1) sends passes through laser Machining head
(1-2) injection, laser Machining head (1-2) puts in outer partial internal vacuum chamber by dynamic sealing assembly (4).
A kind of pipeline circumferential weld parital vacuum laser soldering device the most according to claim 1 and 2, it is characterised in that outside
Outside O-ring seal (2-2), internal parital vacuum housing (3-1) it is provided with between parital vacuum housing (2-1) and pipeline to be welded (6)
And it is provided with inner sealing cushion rubber (3-2) between pipeline to be welded (6).
A kind of pipeline circumferential weld parital vacuum laser soldering device the most according to claim 1 and 2, it is characterised in that dynamic close
Sealing assembly (4) includes movable sealing cushion rubber (4-1), movable sealing controlling organization (4-2) and guiding mechanism (4-3)；
Movable sealing cushion rubber (4-1) is fixed on the outside of open slot (2-3), for the sealing of outer partial vacuum chamber；
Movable sealing controlling organization (4-2) is open-topped box body, two sidewalls that movable sealing controlling organization (4-2) left and right is relative
Being provided with opening (4-5), movable sealing controlling organization (4-2) utilizes two openings (4-5) to be buckled on movable sealing cushion rubber (4-1), should
Opening (4-5) closely cooperates with movable sealing cushion rubber (4-1), and the box plate of this movable sealing controlling organization (4-2) has through hole (4-
4), described through hole (4-4) is used for inserting laser Machining head (1-2)；It is provided with on the box plate of movable sealing controlling organization (4-2)
Guiding mechanism (4-3), and guiding mechanism (4-3) is positioned at above or below through hole (4-4), guiding mechanism (4-3) is used for guiding
Movable sealing cushion rubber (4-1) avoids through hole (4-4).
7. welding method based on welder described in claim 1, it is characterised in that the method is:
Outside parital vacuum room and internal parital vacuum room are carried out evacuation；
Open laser-processing system, the laser beam of laser-processing system output and pipeline to be welded (6) relative motion so that laser beam
Go through and form weld seam all over whole pipeline to be welded (6), complete to treat welded tube road (6) welding.
Method the most according to claim 7, it is characterised in that keep laser-processing system static, make pipeline to be welded (6) with
Its axis is that axle rotates, and completes the laser beam of laser-processing system output and the relative motion of pipeline to be welded (6).
Method the most according to claim 7, it is characterised in that keep pipeline to be welded (6) static, drives laser-processing system
Weld seam along pipeline to be welded (6) moves, and completes the laser beam of laser-processing system output and the relative motion of pipeline to be welded (6).
Method the most according to claim 7, it is characterised in that the laser beam of laser-processing system output and pipeline to be welded
(6) relative motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611009964.8A CN106312321B (en) | 2016-11-16 | 2016-11-16 | A kind of pipeline circumferential weld parital vacuum laser soldering device and the welding method based on the welder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611009964.8A CN106312321B (en) | 2016-11-16 | 2016-11-16 | A kind of pipeline circumferential weld parital vacuum laser soldering device and the welding method based on the welder |
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| CN106312321B CN106312321B (en) | 2017-11-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365979A (en) * | 2018-10-25 | 2019-02-22 | 六安六八航空航天精密器件有限公司 | A kind of diaphragm and diaphragm capsule girth welding technique |
| CN110293313A (en) * | 2019-07-31 | 2019-10-01 | 中国工程物理研究院机械制造工艺研究所 | A kind of laser welding local vacuum sealing tooling and laser soldering device |
| CN113290311A (en) * | 2021-05-24 | 2021-08-24 | 中国船舶重工集团公司第七二五研究所 | Vacuum sealing device for local vacuum electron beam welding of metal pipe fitting |
| CN117123920A (en) * | 2022-11-17 | 2023-11-28 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | Partial vacuum sealing device |
| CN117583713A (en) * | 2024-01-19 | 2024-02-23 | 中国航空制造技术研究院 | Heat-resistant sealing structure for partial high-vacuum electron beam welding equipment |
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| CN110293313A (en) * | 2019-07-31 | 2019-10-01 | 中国工程物理研究院机械制造工艺研究所 | A kind of laser welding local vacuum sealing tooling and laser soldering device |
| CN113290311A (en) * | 2021-05-24 | 2021-08-24 | 中国船舶重工集团公司第七二五研究所 | Vacuum sealing device for local vacuum electron beam welding of metal pipe fitting |
| CN117123920A (en) * | 2022-11-17 | 2023-11-28 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | Partial vacuum sealing device |
| CN117583713A (en) * | 2024-01-19 | 2024-02-23 | 中国航空制造技术研究院 | Heat-resistant sealing structure for partial high-vacuum electron beam welding equipment |
| CN117583713B (en) * | 2024-01-19 | 2024-04-05 | 中国航空制造技术研究院 | Heat-resistant sealing structure for partial high-vacuum electron beam welding equipment |
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| CN106312321B (en) | 2017-11-17 |
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