CN114654055A - Secondary gas protection device for narrow-gap MAG/MIG automatic welding - Google Patents
Secondary gas protection device for narrow-gap MAG/MIG automatic welding Download PDFInfo
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- CN114654055A CN114654055A CN202111572088.0A CN202111572088A CN114654055A CN 114654055 A CN114654055 A CN 114654055A CN 202111572088 A CN202111572088 A CN 202111572088A CN 114654055 A CN114654055 A CN 114654055A
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- filter screen
- screen pipe
- narrow
- flow
- device body
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- 238000003466 welding Methods 0.000 title claims abstract description 63
- 238000009434 installation Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000001816 cooling Methods 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 230000008021 deposition Effects 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 6
- 230000003670 easy-to-clean Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 12
- 238000000151 deposition Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/0213—Narrow gap welding
-
- 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
-
- 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
- B23K9/321—Protecting means
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- 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 a secondary gas protection device for narrow-gap MAG/MIG automatic welding, which comprises a welding gun seat and a narrow-gap welding gun, wherein the narrow-gap welding gun is fixed on the welding gun seat, and the narrow-gap welding gun is sequentially provided with a device body, a uniform flow filter screen pipe, a filter screen pipe protection structure and a current-limiting guide groove, wherein the device body comprises a front device body and a rear device body which are two rectangular cuboid structures which are mirror images of each other, the upper part of each rectangular cuboid structure is provided with an installation structure of the uniform flow filter screen pipe, the middle part of each rectangular cuboid structure is provided with the protection structure of the filter screen pipe, and the lower part of each rectangular cuboid structure is provided with the current-limiting guide groove. The secondary protection device is stable and reliable and has long service life when being kept at a lower set working temperature for a long time; the secondary protection device is always at a lower working temperature, so that splashing cannot be welded with the device, and the secondary protection device is easy to clean; the filter screen pipe has no splash deposition permanently, the protection to a high-temperature welding area is extremely reliable, and the welding air hole defect caused by the splash deposition of the filter screen pipe is avoided.
Description
Technical Field
The invention belongs to the technical field of welding, and particularly relates to a secondary gas protection device for narrow-gap MAG/MIG automatic welding.
Background
The secondary gas shield is a unique application under the condition of narrow-gap gas shield welding, and directly determines the quality of a welding seam at an arc striking and extinguishing end, particularly the quality and reliability of the welding seam of a secondary cover surface welding layer and a cover surface welding layer. The secondary gas protection technology has a slight defect, and the probability of generating a pore defect in a welding seam is high.
In the development and application of the narrow-gap gas shielded welding for more than half a century, the formed mature secondary protection technology is limited, and basically comprises the following steps: the first is the multi-layer filter screen uniform flow technology, and the second is the plate type porous uniform flow technology, wherein the former is the typical application of the Japanese technology, and the latter is the typical application of the European (such as France) technology. The common point of the secondary protection technologies is that the secondary protection devices are all positioned outside the narrow-gap welding groove, and the laminar flow state of the shielding gas is guaranteed by the uniform flow technology.
The typical structure of the filter screen flow uniformizing technology is that after a plurality of layers of stainless steel filter screens with extremely high meshes are overlapped, a filter screen pipe made by laser fusion welding is used as a flow uniformizing device, and then an oval secondary protective gas flow limiting cover is used for setting the secondary gas protection range; the main limitations of this technology are: 1. the circulating water cooling effect of the flow-limiting cover is poor, and long-term reliable and stable operation of the secondary gas protection device is not facilitated. 2. The uniform flow filter screen pipe is directly exposed in a sputtering area which splashes, and when the surface of the uniform flow filter screen pipe is deposited and certain splashes are accumulated, the uniform flow filter screen pipe is invalid, so that the protection effect is greatly reduced. In order to avoid welding defects caused by splashing deposition accumulation, the expensive uniform flow filter screen pipe can be replaced frequently. 3. The low life of the secondary protection device increases production costs. 4. The gas consumption is very high, and is not beneficial to reducing the welding production cost.
The plate-type porous uniform flow technology is mainly used for secondary protection under narrow-gap TIG welding rod pieces and is rarely used under the condition of narrow-gap consumable electrode gas shielded welding; in view of the fact that TIG welding has no welding spatter, the service life problem caused by spatter does not exist; however, the limitation of poor water cooling effect still exists, and when the plate type porous uniform flow technology is used under the condition of narrow-gap consumable electrode gas shielded welding, the limitation of low service life still exists in the prior art.
Disclosure of Invention
The invention aims to provide a secondary gas protection device for narrow-gap MAG/MIG automatic welding, wherein the secondary protection device is always at a lower working temperature, splashes cannot be welded with the device, and the secondary gas protection device is easy to clean; the filter screen pipe has no spattering deposition permanently, the protection to a high-temperature welding area is extremely reliable, and the welding air hole defect caused by the spattering deposition of the filter screen pipe is avoided.
In order to achieve the purpose, the invention provides the following scheme:
a secondary gas protection device for narrow-gap MAG/MIG automatic welding comprises a welding gun seat and a narrow-gap welding gun, wherein the narrow-gap welding gun is fixed on the welding gun seat, a device body, a uniform-flow filter screen pipe, a filter screen pipe protection structure and a flow-limiting guide groove are sequentially arranged on the narrow-gap welding gun, the device body comprises a front device body and a rear device body, the front device body and the rear device body are of two rectangular cuboid structures which are mirror images of each other, the upper part of each rectangular cuboid structure is provided with an installation structure of the uniform-flow filter screen pipe 17, the middle part of each rectangular cuboid structure is provided with the protection structure of the filter screen pipe, and the lower part of each rectangular cuboid structure is provided with the flow-limiting guide groove.
Furthermore, the uniform flow filter screen pipe is connected to the device body through a front filter screen pipe fixing seat and a rear filter screen fixing seat respectively, the uniform flow filter screen pipe comprises a filter screen, a blind end plug and an open end pipe seat which are welded together, the filter screen is formed by overlapping and welding superfine stainless steel woven nets into a pipe along a longitudinal seam in a multi-layer mode, the filter screen is assembled with the blind end plug and the open end pipe seat and then welded together, and the open end pipe seat is an input end of primary protective gas.
Furthermore, the filter screen pipe protection structure comprises a front filter screen pipe protection structure and a rear filter screen pipe protection structure, the front filter screen pipe protection structure and the rear filter screen pipe protection structure are symmetrical structures and are T-shaped structures, and the part of the filter screen pipe protection structure extending into the air guide flow channel is processed into densely distributed parallel uniform flow holes.
Furthermore, the flow-limiting guide groove comprises a front flow-limiting guide groove and a rear flow-limiting guide groove, and the front flow-limiting guide groove and the rear flow-limiting guide groove are respectively positioned below the front filter screen pipe protection structure and the rear filter screen pipe protection structure.
Furthermore, the area of the exterior of the flow-limiting guide groove, which is strongly irradiated by light and heat, is provided with a high-efficiency circulating water cooling structure, which comprises a front circulating water cooling structure and a rear circulating water cooling structure, the front circulating water cooling structure and the rear circulating water cooling structure are respectively positioned at the front part and the rear part of the secondary protection device, rectangular sinking grooves are processed in the width direction of the outer sides of the lower parts of the front device body and the rear device body, capillary copper pipes made of pure copper materials are densely paved in the rectangular sinking grooves, and the two ends of the capillary copper pipes are respectively connected with the water inlet pipe seat, the front side bridge water receiving seat, the rear side bridge water receiving seat and the water outlet pipe seat and are then brazed and sealed.
Compared with the prior art, the invention has the beneficial effects that:
1. when the industrial water chiller is used for constant-temperature circulating cooling, the secondary protection device is stable and reliable and has long service life when being kept at a lower set working temperature for a long time; 2. the secondary protection device is always at a lower working temperature, so that splashing cannot be welded with the device, and the secondary protection device is easy to clean; 3. the filter screen pipe has no splash deposition permanently, the protection of a high-temperature welding area is very reliable, and the generation of welding air hole defects caused by the splash deposition of the filter screen pipe is avoided; 4. the filter screen pipe completely avoids the failure caused by splash deposition, and reduces the operation and maintenance cost.
Drawings
FIG. 1 is a schematic diagram of the assembly installation of a secondary gas protection device;
FIG. 2 is a schematic view of a sectional structure of a secondary gas shield apparatus at one side of a narrow gap welding gun in a height direction;
FIG. 3 is a schematic structural view of a front screen pipe protection structure and a rear screen pipe protection structure;
FIG. 4 is a schematic diagram of a high efficiency water cooling cycle configuration;
FIG. 5 is a schematic view of a screen tube;
FIG. 6 is a schematic view showing the shape and position of a guide groove for a secondary shielding gas;
FIG. 7 is a schematic diagram of a high-efficiency circulating water channel series water channel of a secondary shielding gas device;
in the figure: 1. the welding gun comprises a welding gun seat, 2 a front air inlet seat, 3 a rear air inlet seat, 4 a front filter screen pipe fixing seat, 5 a rear filter screen pipe fixing seat, 6 a front device body, 7 a rear device body, 8 a front filter screen pipe protecting structure, 9 a rear filter screen pipe protecting structure, 10 a front circulating water cooling structure, 11 a rear circulating water cooling structure, 12 a front water inlet seat, 13 a rear water return seat, 14 a narrow gap welding gun, 15 welding wires, 16 electric arcs, 17 filter screen pipes, 18 a front flow limiting guide groove, 19 a filter screen pipe protecting structure cover plate, 20 flow homogenizing holes, 21 a hole milling cover plate, 22 an open end pipe seat, 23 a blind end plug, 24 a filter screen, 25 a rear flow limiting guide groove, 26 a front side bridge seat and 27 a rear side bridge water receiving seat.
Detailed Description
The technical solution and the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
For a better understanding of the present invention, the present invention is further illustrated below with reference to specific examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Example 1
1-7, a long life narrow gap MAG/MIG automatic welding secondary gas protection device mainly comprises: the device comprises a front device body 6, a rear device body 7, a filter screen pipe 17, a front filter screen pipe protection structure 8, a rear filter screen pipe protection structure 9, a front flow limiting guide groove 18, a rear flow limiting guide groove 25, a front circulating water cooling structure 10 and a rear circulating water cooling structure 11.
The front device body 6 and the rear device body 7 are two rectangular cuboid structures which are mirror images of each other. The upper part of each rectangular cuboid structure is provided with an installation structure of the uniform flow filter screen pipe 17, the middle part of each rectangular cuboid structure is provided with a protection structure of the filter screen pipe, the lower part of each rectangular cuboid structure is provided with a current-limiting guide groove, and an area, which is exposed to intense photo-thermal radiation, outside the lower current-limiting guide groove is provided with a high-efficiency circulating water cooling structure.
The filter screen pipe 17 is formed by welding a filter screen 24, a blind end plug 23 and an open end pipe seat 22, the filter screen 24 is formed by overlapping and welding extremely thin stainless steel meshes in multiple layers along a longitudinal seam, and then the filter screen pipe is assembled with the blind end plug 23 and the open end pipe seat 22 and then welded. Open-ended socket 22 is the primary shielding gas input.
The filter screen pipe protection structure is a T-shaped structure, and the front filter screen pipe protection structure 8 and the rear filter screen pipe protection structure 9 are in the same shape and size. The front end of the filter screen pipe protection structure is provided with a filter screen pipe protection structure cover plate 19, and the part extending into the air guide flow channel is processed into densely distributed parallel uniform flow holes 20. The densely distributed parallel small holes have two functions, namely, primary protective gas sprayed by the filter screen pipe 17 is further uniformly flowed, and splashing possibly generated in a molten drop transition area is prevented from flying to the filter screen pipe 17.
The filter screen pipe protection structure is designed to be a detachable plug-in structure which can be used for a long time. The structure is taken out of the device body periodically, the attached splash on the splash-facing surface is cleaned, and then the device body is inserted for reuse.
The front flow-limiting guide groove 18 and the rear flow-limiting guide groove 25 are respectively positioned below the front filter screen pipe protection structure 8 and the rear filter screen pipe protection structure 9 (air outlet side), and the limited air spraying range is designed based on the principle that a high-temperature welding area is in an excellent metallurgical protection state (a welding seam after cooling and crystallizing a molten pool is bright metal in nature).
In the above embodiment, the front circulating water cooling structure 10 and the rear circulating water cooling structure 11 are respectively located at the lower parts of the front and the rear of the secondary protection device. Rectangular sinking grooves are processed in the width direction of the outer sides of the lower portions of a front device body 6 and a rear device body 7 of the secondary gas protection device, capillary copper pipes made of pure copper materials are densely paved in the rectangular sinking grooves, and the two ends of the capillary copper pipes are respectively connected with a water inlet pipe seat 12, a front side bridge water receiving seat 26, a rear side bridge water receiving seat 27 and a water outlet pipe seat 13 and then are sealed in a soldering mode. When in operation, one path of water flowing in from the water inlet pipe seat 12 is divided by the water inlet pipe seat to flow to all the capillary copper pipes in the same direction and is converged to the water outlet pipe seat 13 to flow out. The water pipe seats on the same side of the front device body 6 and the rear device body 7 can be bridged and connected in series.
Example 2
A secondary gas protection device under the condition of narrow-gap MAG/MIG welding is characterized in that the outer diameter of a filter screen pipe 17 is 11mm, and the diameter of an inner hole is 6 mm; the front flow-limiting guide groove 18 and the rear flow-limiting guide groove 25 are 40mm long, 10mm wide and 46mm high; the number of the uniform flow holes 20 with the diameter of 1mm of the front filter screen pipe protection structure 8 and the rear filter screen pipe protection structure 9 is 106. The other structures are the same as those in embodiment 1.
Example 3
A secondary gas protection device under the condition of narrow-gap MAG/MIG welding is characterized in that a front circulating water cooling structure 10 and a rear circulating water cooling structure 11 are respectively provided with a semicircular groove on the lower portion of a front device body 6 and a rear device body 7 through ball milling, another semicircle with the same diameter is processed on a milling hole cover plate 21, and then the semicircular grooves and the semicircular grooves are welded through a brazing method. The other structures are the same as those in embodiment 1.
Finally, it should be noted that: the above description is only intended to illustrate the technical solution of the present invention, and not to limit it; although the invention has been described in detail with reference to specific embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A secondary gas protection device for narrow-gap MAG/MIG automatic welding is characterized by comprising a welding gun seat and a narrow-gap welding gun, wherein the narrow-gap welding gun is fixed on the welding gun seat, a device body, a uniform-flow filter screen pipe, a filter screen pipe protection structure and a flow-limiting guide groove are sequentially arranged on the narrow-gap welding gun, the device body comprises a front device body and a rear device body which are two rectangular cuboid structures which are mirror images of each other, the upper part of each rectangular cuboid structure is provided with an installation structure of the uniform-flow filter screen pipe, the middle part of each rectangular cuboid structure is provided with the protection structure of the filter screen pipe, and the lower part of each rectangular cuboid structure is provided with the flow-limiting guide groove.
2. The narrow-gap MAG/MIG automatic welding secondary gas shielding device as claimed in claim 1, wherein the uniform flow filter screen tube is connected to the device body through a front filter screen tube fixing seat and a rear filter screen tube fixing seat respectively, the uniform flow filter screen tube comprises a filter screen, a blind end plug and an open end tube seat which are welded together, the filter screen is formed by welding a plurality of layers of ultra-fine stainless steel mesh along a longitudinal seam, and then the filter screen is assembled with the blind end plug and the open end tube seat and then welded together, and the open end tube seat is an input end of the primary shielding gas.
3. The narrow-gap MAG/MIG automatic welding secondary gas shield device as claimed in claim 1, wherein the screen pipe protection structure comprises a front screen pipe protection structure and a rear screen pipe protection structure, the front screen pipe protection structure and the rear screen pipe protection structure are symmetrical structures and are T-shaped structures, and the part of the screen pipe protection structure extending into the gas guide flow channel is processed into densely distributed parallel uniform flow holes.
4. The narrow-gap MAG/MIG automatic welding secondary gas shield device of claim 1, wherein the flow-restricting guide slots comprise a front flow-restricting guide slot and a rear flow-restricting guide slot, the front flow-restricting guide slot and the rear flow-restricting guide slot being located below the front screen tube protection structure and the rear screen tube protection structure, respectively.
5. The narrow-gap MAG/MIG automatic welding secondary gas protection device as claimed in claim 1, wherein the area of the outer part of the flow-limiting guide groove exposed to intense photo-thermal radiation is provided with a high-efficiency circulating water cooling structure, which comprises a front circulating water cooling structure and a rear circulating water cooling structure, the front circulating water cooling structure and the rear circulating water cooling structure are respectively located at the front and rear lower parts of the secondary protection device, rectangular sinking grooves are formed in the outer side width direction of the lower parts of the front device body and the rear device body, capillary copper tubes made of pure copper materials are densely paved in the rectangular sinking grooves, and the two ends of the capillary copper tubes are respectively connected with the water inlet tube seat, the front side bridge water receiving seat, the rear side bridge water receiving seat and the water outlet tube seat and then are sealed by brazing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111572088.0A CN114654055A (en) | 2021-12-21 | 2021-12-21 | Secondary gas protection device for narrow-gap MAG/MIG automatic welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111572088.0A CN114654055A (en) | 2021-12-21 | 2021-12-21 | Secondary gas protection device for narrow-gap MAG/MIG automatic welding |
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| Publication Number | Publication Date |
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| CN114654055A true CN114654055A (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111572088.0A Pending CN114654055A (en) | 2021-12-21 | 2021-12-21 | Secondary gas protection device for narrow-gap MAG/MIG automatic welding |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3992603A (en) * | 1974-05-31 | 1976-11-16 | Welding Research, Inc. | Narrow gap welding torch |
| DE3300628A1 (en) * | 1983-01-11 | 1983-07-14 | Erwin-Helmut 5276 Wiehl Günther | Torch arrangement for narrow-gap welding |
| FI20106295A0 (en) * | 2010-12-07 | 2010-12-07 | Aalto Korkeakoulusaeaetioe | Narrow joint MIG / MAG welding torch |
| CN202498295U (en) * | 2012-02-24 | 2012-10-24 | 佛山市澜石宇航星不锈钢有限公司 | Local gas protection dragging cover used in titanium alloy welding |
| CN104162729A (en) * | 2014-07-23 | 2014-11-26 | 湖北鸿路钢结构有限公司 | Internal/ external multi-protection narrow gap/ super-narrow gas welding nozzle |
| CN104384683A (en) * | 2014-09-22 | 2015-03-04 | 武汉纳瑞格智能设备有限公司 | Automatic multifunctional narrow-clearance/super-narrow-clearance gas protection welding gun and manufacturing method thereof |
| CN104923887A (en) * | 2015-06-26 | 2015-09-23 | 武汉纳瑞格智能设备有限公司 | Transverse direction self-adaptation tracking device for ultra-narrow gap MAG/MIG welding weld line |
| CN105689849A (en) * | 2016-03-28 | 2016-06-22 | 武汉纳瑞格智能设备有限公司 | Gas distributing device for rear-mounted narrow gas/ultra-narrow gap gas shield welding gun |
| CN106270982A (en) * | 2016-09-23 | 2017-01-04 | 武汉纳瑞格智能设备有限公司 | A kind of overlength stagewise narrow gap gas protection weldering welding gun |
| CN108608094A (en) * | 2018-04-28 | 2018-10-02 | 武汉纳瑞格智能设备有限公司 | A kind of efficient gas-saving type ultra-narrow gap MAG/MIG automatic welding secondary air protective devices |
-
2021
- 2021-12-21 CN CN202111572088.0A patent/CN114654055A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3992603A (en) * | 1974-05-31 | 1976-11-16 | Welding Research, Inc. | Narrow gap welding torch |
| DE3300628A1 (en) * | 1983-01-11 | 1983-07-14 | Erwin-Helmut 5276 Wiehl Günther | Torch arrangement for narrow-gap welding |
| FI20106295A0 (en) * | 2010-12-07 | 2010-12-07 | Aalto Korkeakoulusaeaetioe | Narrow joint MIG / MAG welding torch |
| WO2012076750A1 (en) * | 2010-12-07 | 2012-06-14 | Aalto University Foundation | Narrow gap mig/mag welding torch |
| CN202498295U (en) * | 2012-02-24 | 2012-10-24 | 佛山市澜石宇航星不锈钢有限公司 | Local gas protection dragging cover used in titanium alloy welding |
| CN104162729A (en) * | 2014-07-23 | 2014-11-26 | 湖北鸿路钢结构有限公司 | Internal/ external multi-protection narrow gap/ super-narrow gas welding nozzle |
| CN104384683A (en) * | 2014-09-22 | 2015-03-04 | 武汉纳瑞格智能设备有限公司 | Automatic multifunctional narrow-clearance/super-narrow-clearance gas protection welding gun and manufacturing method thereof |
| CN104923887A (en) * | 2015-06-26 | 2015-09-23 | 武汉纳瑞格智能设备有限公司 | Transverse direction self-adaptation tracking device for ultra-narrow gap MAG/MIG welding weld line |
| CN105689849A (en) * | 2016-03-28 | 2016-06-22 | 武汉纳瑞格智能设备有限公司 | Gas distributing device for rear-mounted narrow gas/ultra-narrow gap gas shield welding gun |
| CN106270982A (en) * | 2016-09-23 | 2017-01-04 | 武汉纳瑞格智能设备有限公司 | A kind of overlength stagewise narrow gap gas protection weldering welding gun |
| CN108608094A (en) * | 2018-04-28 | 2018-10-02 | 武汉纳瑞格智能设备有限公司 | A kind of efficient gas-saving type ultra-narrow gap MAG/MIG automatic welding secondary air protective devices |
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