CN106624302A - Integrated type protective cover used for welding pool and front welding seam high-temperature region - Google Patents
Integrated type protective cover used for welding pool and front welding seam high-temperature region Download PDFInfo
- Publication number
- CN106624302A CN106624302A CN201710085351.0A CN201710085351A CN106624302A CN 106624302 A CN106624302 A CN 106624302A CN 201710085351 A CN201710085351 A CN 201710085351A CN 106624302 A CN106624302 A CN 106624302A
- Authority
- CN
- China
- Prior art keywords
- breather pipe
- arm
- housing
- temperature region
- protective cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 66
- 230000001681 protective effect Effects 0.000 title claims abstract description 31
- 239000011148 porous material Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 description 31
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses an integrated type protective cover used for a welding pool and a front welding seam high-temperature region. The integrated type protective cover comprises a housing, bottom of which is equipped with a first gas vent hole, and a breather tube which is arranged in the housing, wherein the breather tube comprises a gas inlet main tube with two gas outlets, a first breather tube which is separately connected with the two gas outlets for protecting the welding pool, and a second breather tube which is used for protecting the front welding seam high-temperature region; the first breather tube is annular; the second breather tube comprises a first branch tube and a second branch tube; the shape of the first branch tube is matched with that of the first breather tube; among the first breather tube, the first branch tube and the second branch tube, at least the first breather tube and the second branch tube comprise a second gas vent hole; the housing comprises a first housing for accommodating the second branch tube, a first housing for accommodating the first breather tube and the first branch tube, and a third housing for accommodating the gas inlet main tube; and through holes which are matched with the first breather tube and the first branch tube are formed in the upper part and the bottom of the second housing.
Description
Technical field
The present invention relates to welding technology field, more particularly to a kind of welding protective cover.
Background technology
Titanium alloy welding is particularly significant in military, needs during welding to welding pool, fillet in normal shear high-temperature region and back
Weld seam high-temperature region carries out air blowing protection simultaneously, to avoid being reacted with hydrogen, oxygen, nitrogen, carbon etc., so as to reduce and avoid commissure
Crack, the weld defect such as pore so that the plasticity and toughness of titanium alloy is obviously improved.Wherein, welding pool refers to welding gun
The welded seam area of underface, fillet in normal shear high-temperature region refers to the temperature of neighbouring welding pool after welding gun movement more than 300 DEG C
Weld seam front surface region, back weld seam high-temperature region refers to weld seam of the temperature relative with fillet in normal shear high-temperature region more than 300 DEG C
Rear surface regions.At present generally using three inert gas protection devices respectively to welding pool, fillet in normal shear high-temperature region and back
Protected respectively weld seam high-temperature region, it is therefore desirable to three protection air inlets and three supply air lines, because every time welding is all needed
Want three protection devices to run simultaneously, therefore also need to the supply of three protection gas cylinder independence.In actual industrial production, this
Plant protected mode more complicated, specifically bring three problems：
(1) each workman is required for three protection devices while being controlled operation, this can greatly increase welding production
Difficulty；(2) between because the protection zone of weld shielding device and fillet in normal shear high-temperature region protection device often has necessarily
Away from, cause one section of high-temperature area of centre unprotected, have a strong impact on welding quality；(3) due to generally needing multiple welding machines same
When work, when protection is run out of air, then need to change the gas cylinder for being three times in welding machine number, and in actual welding production, by
Stack more intensive in factory's material, the process for changing gas cylinder is very inconvenient；(4) every welding machine is required for three air supply hoses,
The increase of flexible pipe quantity, greatly increases can the probability that staff is tripped, and bring larger potential safety hazard.
The content of the invention
Based on above-mentioned the deficiencies in the prior art, the technical problem to be solved is to provide one kind and is effectively reduced guarantor
Shield gas bottle quantity, protection more comprehensively, the more preferable welding protective cover of processing safety.
The technical scheme that present invention solution above-mentioned technical problem is adopted is for for welding pool and fillet in normal shear high-temperature region
Integral type protective cover, including bottom is provided with the shell and the breather pipe located at the inside the shell of first row pore, the ventilation
Pipe includes the air inlet supervisor with two gas outlets, for protecting welding pool for being connected with described two gas outlets respectively
One breather pipe and the second breather pipe for protecting fillet in normal shear high-temperature region；First breather pipe is annular；Described second leads to
Tracheae includes the first arm, the second arm；The shape of first arm is mutually matched with the shape of the first breather pipe；Described
In one breather pipe, the first arm and the second arm, at least the first breather pipe and the second arm contain second row pore；The shell
The first housing, the second housing of the first breather pipe of receiving and the first arm including the arm of receiving second being sequentially connected, receiving
3rd housing of air inlet supervisor；The top and bottom of second housing is provided with match with the first breather pipe and the first arm logical
Hole.
First, share the first breather pipe of protection welding pool and the second breather pipe of protection fillet in normal shear high-temperature region same
One air inlet, can reduce the quantity of air supply hose and protection gas cylinder, lift the security of welding operation.Secondly, by ingenious
Design, be the first arm for including the second arm and matching with the first breather pipe by the second breather pipe design, the first arm with
The annular through-hole that first breather pipe is collectively forming can be used as the installation passage of welding gun, and one can be before not affecting welding gun to install
Lifting integrated level is put, shortens ventilation length of tube, two can shorten the distance of the first breather pipe and the second arm, reduce welding
The area in unprotected region between molten bath and fillet in normal shear high-temperature region, effectively lifts welding product quality.The shell can be with one
It is body formed, it is also possible to be assembled by the first housing, the second housing, the 3rd housing that are fabricated separately.It is preferred that making the first breather pipe
Positioned at the lower section of the first arm, now, the first breather pipe is shorter with the distance between second housing bottom first row pore, protection
Gas velocity is faster, it is to avoid the first arm affects the flow velocity and flow for protecting the shielding gas of welding pool.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region,
The first flow accelerator is provided between second arm and the first housing bottom；First breather pipe and the second housing bottom
The second flow accelerator is provided between portion.By arranging shielding gas flow accelerator, the stream of shielding gas can be obviously improved
Go out speed, preferable protected effect can be kept while the usage amount of shielding gas is reduced.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, institute
It is the airflow plate with the 3rd steam vent to state the first flow accelerator；By arranging airflow plate, can make from the first shell bottom
The shielding gas distribution that portion flows out is more uniform, and protected effect is more preferable.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, institute
The upper opening area for stating the 3rd steam vent is more than lower openings area；By the turbulence effects for increasing shielding gas, so as to show
The rate of outflow for lifting shielding gas is write, device is simple and protected effect is obviously improved.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, institute
It is to connect the side tiltedly put of the second housing bottom and the 3rd housing bottom to state the second flow accelerator.Due on the second housing
The through hole installed for welding gun is provided with, therefore the side that setting is tiltedly put can be by not affecting on the premise of welding gun installation to protection
The flow velocity of gas is lifted, simple structure and easy for installation.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, institute
State and be provided with baffle plate between the first housing and the second housing.By arranging baffle plate, it can be ensured that molten bath obtains with fillet in normal shear high-temperature region
To independent protection, it is more convenient for controlling the first breather pipe and the shielding gas gas flow in the second breather pipe.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, also
Including protection air-flow amount control system；The protection air-flow amount control system includes single-chip microcomputer, and the input of the single-chip microcomputer connects
It is connected to the interrupt control unit and the transmitter of flow sensor connection of host computer and welding gun connection, the output end of the single-chip microcomputer
It is connected with change-over circuit, flow divider in turn；The flow divider is on air inlet supervisor.When welding gun works, interrupt control unit knot
Required shield gas flow rate desired value is passed to single-chip microcomputer by the interruption control of beam Butt welding gun, host computer, and single-chip microcomputer is by turning
The analog signal that circuit can recognize digital signal transition for flow divider is changed, control flow divider is opened, and now shielding gas is flowed into
In first breather pipe and the second breather pipe, when it is through flow sensor, uninterrupted is monitored, and is sent out by flow sensor
Outflow feeds back value signal, and through transmitter single-chip microcomputer, the stream that single-chip microcomputer transmits this flow feedback value and host computer are passed to
Amount desired value is compared, and when value of feedback is more than desired value, then controls flow divider and turns down, otherwise then drives large shunt valve, until
Desired value is equal with value of feedback, and now shield gas flow rate is stable near the target flow of host computer setting.Protected by arranging
Shield airflow volume control system, can guarantee the protection flowed out from the first housing bottom and the second housing bottom respectively within the shortest time
Gas gas flow meets the requirements.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, institute
It is proportional diverter valve to state flow divider, by Set scale flow divider, is more convenient for controlling the gas of the first breather pipe and the second breather pipe
Body flow, to be protected respectively with the particularity of fillet in normal shear high-temperature region for molten bath；Due to Set scale flow divider, therefore
Only flow sensor can be set on air inlet supervisor, it is of course also possible to further on the first breather pipe and the second breather pipe
Flow sensor is set, and single-chip microcomputer then considers the test result of multiple flow sensors, makes control accuracy higher；It is described
Model 8259A of terminal control unit；The change-over circuit is D/A type change-over circuits；The transmitter is digital transmitter；
Be additionally provided between the change-over circuit and flow divider can amplifier digital signal power amplifying circuit.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, institute
The second row pore for stating the first breather pipe is located on the latter half tube wall of the first breather pipe；The second exhaust of second arm
Hole is on the latter half tube wall of the second arm.It is different from 360 ° of the breather pipe of other protective covers full axial apertures, this
Bright breather pipe can improve gas pressure in pipe only in cross-sectional horizontal with lower portion perforate when same gas flow is input into
By force, gas is had than larger flow velocity, the gas for making ejection preferably concentrates on the protected direction of weld seam, improve protection effect
Rate, saving and protection gas, environmental protection and economic, adaptation era development.
As a kind of above-mentioned further improvement for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, institute
That states the second arm is shaped as U-shaped, and compared with traditional bar shaped breather pipe, the area coverage of the second arm of U-shaped is wider, protection
Area is bigger；First arm is annular or semi-circular.
With reference to the accompanying drawings and detailed description the present invention is described further.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partly will become apparent from the description below, or by the practice of the present invention
Solve.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention's is embodied as
Mode, schematic description and description do not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the top view of the first breather pipe of embodiment 1.
Fig. 2 is the upward view of the first breather pipe of embodiment 1.
Fig. 3 is the top view of the second breather pipe of embodiment 1.
Fig. 4 is the upward view of the second breather pipe of embodiment 1.
Fig. 5 is embodiment 1 for welding pool and the sectional view of the integral type protective cover of fillet in normal shear high-temperature region.
Fig. 6 is the structural representation of the protection air-flow amount control system of embodiment 1.
Fig. 7 is the upward view of the second breather pipe of embodiment 2.
Fig. 8 is the upward view of the second breather pipe of embodiment 3.
Specific embodiment
It should be noted that in the case where not conflicting, specific embodiment, embodiment in the application and therein
Feature can be mutually combined.Let us now refer to the figures and describe the present invention in detail with reference to herein below.
In order that those skilled in the art are better understood from the present invention program, below in conjunction with specific embodiment party of the present invention
Accompanying drawing in formula, embodiment, to the technical scheme in the specific embodiment of the invention, embodiment clear, complete description is carried out,
Obviously, described embodiment is only the embodiment of a branch of the invention, rather than the embodiment of whole.Based in the present invention
Specific embodiment, embodiment, what those of ordinary skill in the art were obtained on the premise of creative work is not made
Every other embodiment, embodiment, should all belong to the scope of protection of the invention.
Embodiment 1
As shown in figures 1 to 6, for welding pool and the integral type protective cover of fillet in normal shear high-temperature region, including bottom is provided with
The shell and the breather pipe located at the inside the shell of one steam vent 31；The breather pipe includes the air inlet master with two gas outlets
Pipe 100, the first breather pipe 1 for protecting welding pool being connected with described two gas outlets respectively and for protecting face bonding
Second breather pipe 2 of seam high-temperature region；First breather pipe 1 is annular；Second breather pipe 2 include the first arm 21,
Second arm 22, the shape of the shape of first arm 21 and the first breather pipe 1 is mutually matched and for annular, and described second
Arm 22 is shaped as U-shaped；It is in charge of with the lower half of second arm 22 on the latter half tube wall of first breather pipe 1
Wall is provided with second row pore 32.The shell includes the first housing 41 of the second arm of receiving 22 being sequentially connected, accommodates the
Second housing 42 of one breather pipe 1 and the first arm 21, the 3rd housing 43 for accommodating air inlet supervisor 100；Second housing 42
Top and bottom be provided with the through hole 420 matched with the first breather pipe 1 and the first arm 21.First housing 41 is shaped as
Cuboid.Baffle plate 6 is provided between the housing 22 of first housing 21 and second.
The first flow accelerator is provided between the bottom of 22 and first housing of the second arm 41；First air-flow
Accelerator is the airflow plate 5 with the 3rd steam vent 33；The upper opening area of the 3rd steam vent 33 is opened more than bottom
Open area.The second flow accelerator is provided between the bottom of first breather pipe, 1 and second housing 42；Second air-flow adds
Quick-mounting is set to the side 421 tiltedly put of the connection bottom of the second housing 42 and the bottom of the 3rd housing 43.
Also include protection air-flow amount control system, the protection air-flow amount control system includes single-chip microcomputer, the single-chip microcomputer
Input be connected with host computer and welding gun connection interrupt control unit and flow sensor connection transmitter, the monolithic
The output end of machine is connected with change-over circuit, amplifying circuit, flow divider 7 in turn；The flow divider 7 is responsible on 100 located at air inlet, institute
Flow divider 7 is stated for proportional diverter valve；The flow sensor is on air inlet supervisor 100；The model of the terminal control unit
8259A；The change-over circuit is D/A type change-over circuits；The transmitter is digital transmitter.
Embodiment 2
Compared with Example 1, the integral type protective cover for welding pool and fillet in normal shear high-temperature region of the present embodiment has
There is following difference：As shown in fig. 7, also being provided with second row pore 32 on the latter half tube wall of first arm 21.
Embodiment 3
Compared with Example 1, the integral type protective cover for welding pool and fillet in normal shear high-temperature region of the present embodiment has
There is following difference：As shown in figure 8, first arm 21 is semi-circular shape.
Claims (10)
1. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for, including bottom is provided with first row pore (31)
Shell and the breather pipe located at the inside the shell, it is characterised in that：
The breather pipe includes air inlet supervisor (100) with two gas outlets, the use being connected with described two gas outlets respectively
The second breather pipe (2) in first breather pipe (1) of protection welding pool and for protecting fillet in normal shear high-temperature region；
First breather pipe (1) is annular；Second breather pipe (2) includes the first arm (21), the second arm (22), institute
The shape and the shape of the first breather pipe (1) for stating the first arm (21) is mutually matched；First breather pipe (1), the first arm
(21) and in the second arm (22), at least the first breather pipe (1) and the second arm (22) are containing second row pore (32)；
The shell include be sequentially connected the arm of receiving second (22) the first housing (41), accommodate the first breather pipe (1) and
Second housing (42) of the first arm (21), the 3rd housing (43) for accommodating air inlet supervisor (100)；Second housing (42)
Top and bottom are provided with the through hole (420) matched with the first breather pipe (1) and the first arm (21).
2. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 1, it is characterised in that：
The first flow accelerator is provided between second arm (22) and the first housing (41) bottom；First breather pipe
(1) it is provided with the second flow accelerator and the second housing (42) bottom between.
3. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 2, it is characterised in that：
First flow accelerator is the airflow plate (5) with the 3rd steam vent (33).
4. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 3, it is characterised in that：
The upper opening area of the 3rd steam vent (33) is more than lower openings area.
5. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 2, it is characterised in that：
Second flow accelerator is connection the second housing (42) bottom and the side tiltedly put of the 3rd housing (43) bottom
(421)。
6. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 1, it is characterised in that：
Baffle plate (6) is provided between first housing (41) and the second housing (42).
7. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 1, it is characterised in that：
Also include protection air-flow amount control system；The protection air-flow amount control system includes single-chip microcomputer, the input of the single-chip microcomputer
It is connected with the interrupt control unit and the transmitter of flow sensor connection of host computer and welding gun connection, the output of the single-chip microcomputer
End is connected with change-over circuit, flow divider (7) in turn；The flow divider (7) is in air inlet supervisor (100).
8. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 7, it is characterised in that：
The flow divider (7) is proportional diverter valve；The flow sensor is in air inlet supervisor (100)；In the change-over circuit and
Flow divider is additionally provided with amplifying circuit between (7).
9. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 1, it is characterised in that：
The second row pore (32) of first breather pipe (1) is on the latter half tube wall of the first breather pipe (1)；Described second
The second row pore (32) of pipe (22) is on the latter half tube wall of the second arm (22).
10. the integral type protective cover of welding pool and fillet in normal shear high-temperature region is used for as claimed in claim 1, and its feature exists
In：Second arm (22) is shaped as U-shaped；First arm (21) is annular or semi-circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085351.0A CN106624302B (en) | 2017-02-17 | 2017-02-17 | Integrated protective cover for welding pool and front welding seam high-temperature area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085351.0A CN106624302B (en) | 2017-02-17 | 2017-02-17 | Integrated protective cover for welding pool and front welding seam high-temperature area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106624302A true CN106624302A (en) | 2017-05-10 |
| CN106624302B CN106624302B (en) | 2022-05-27 |
Family
ID=58845522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710085351.0A Expired - Fee Related CN106624302B (en) | 2017-02-17 | 2017-02-17 | Integrated protective cover for welding pool and front welding seam high-temperature area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106624302B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003311419A (en) * | 2002-04-19 | 2003-11-05 | Nippon Sanso Corp | Mig-welding method for stainless steel and tool for gas shield |
| CN102554415A (en) * | 2011-12-13 | 2012-07-11 | 江西洪都航空工业集团有限责任公司 | Protective device of titanium alloy part argon arc welding welded joint and welding method thereof |
| CN203124933U (en) * | 2013-04-10 | 2013-08-14 | 宁波明欣化工机械有限责任公司 | Laminar flow protector for welding gun |
| CN105269132A (en) * | 2015-11-11 | 2016-01-27 | 西安交通大学 | Weld joint real-time protection cover during welding |
| CN206550487U (en) * | 2017-02-17 | 2017-10-13 | 西南交通大学 | For welding pool and the integral type protective cover of fillet in normal shear high-temperature region |
-
2017
- 2017-02-17 CN CN201710085351.0A patent/CN106624302B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003311419A (en) * | 2002-04-19 | 2003-11-05 | Nippon Sanso Corp | Mig-welding method for stainless steel and tool for gas shield |
| CN102554415A (en) * | 2011-12-13 | 2012-07-11 | 江西洪都航空工业集团有限责任公司 | Protective device of titanium alloy part argon arc welding welded joint and welding method thereof |
| CN203124933U (en) * | 2013-04-10 | 2013-08-14 | 宁波明欣化工机械有限责任公司 | Laminar flow protector for welding gun |
| CN105269132A (en) * | 2015-11-11 | 2016-01-27 | 西安交通大学 | Weld joint real-time protection cover during welding |
| CN206550487U (en) * | 2017-02-17 | 2017-10-13 | 西南交通大学 | For welding pool and the integral type protective cover of fillet in normal shear high-temperature region |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106624302B (en) | 2022-05-27 |
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| CF01 | Termination of patent right due to non-payment of annual fee |