CN114226928A - Titanium alloy thick plate welding process and device - Google Patents
Titanium alloy thick plate welding process and device Download PDFInfo
- Publication number
- CN114226928A CN114226928A CN202111518402.7A CN202111518402A CN114226928A CN 114226928 A CN114226928 A CN 114226928A CN 202111518402 A CN202111518402 A CN 202111518402A CN 114226928 A CN114226928 A CN 114226928A
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- 238000003466 welding Methods 0.000 title claims abstract description 138
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 142
- 229910052786 argon Inorganic materials 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 30
- 238000003860 storage 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
- 239000000110 cooling liquid Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 10
- 210000005067 joint tissue Anatomy 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
-
- 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
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
-
- 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
- B23K9/235—Preliminary treatment
-
- 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
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention comprehensively applies a high-frequency pulse technology, a heat exchange technology and a narrow gap welding technology, provides a manual argon tungsten-arc welding process and a device for titanium alloy thick plates, solves the problems of multiple welding passes, large thermal response zone joint residual stress, large welding deformation and low welding efficiency of thick-wall titanium alloy structural members, solves the problem of thick weld joint tissues caused by large heat input in the welding process, and ensures the comprehensive mechanical properties of the titanium alloy after welding.
Description
Technical Field
The invention relates to a metal welding method, in particular to a titanium alloy thick plate welding process and a titanium alloy thick plate welding device.
Background
The titanium and titanium alloy has the advantages of small density, high specific strength, high corrosion resistance, high temperature, low heat conductivity coefficient, good processability and the like, is widely applied to spaceflight, ships, metallurgy, electric power, industry, medical treatment, sports goods and daily living appliances, obtains good economic and social benefits, and has the advantages of more and more extensive application along with the upsizing of equipment in modern industry and national defense equipment, and the welding technology of the titanium alloy thick plate is also concerned. The traditional argon arc welding technology is used for forming a groove with a larger angle, the welding passes are multiple, the thermal response area is large in residual stress, large in welding deformation and low in welding efficiency, meanwhile, the welding seam tissue is thick due to large welding heat input, so that the mechanical property of the welding seam is reduced, the application of the traditional argon arc welding technology is greatly limited, and the traditional argon arc welding technology and the traditional argon arc welding device aim at the titanium alloy thick plate welding non-systematic welding manufacturing process and device.
Disclosure of Invention
The invention aims to provide a welding process and a welding device for a titanium alloy thick plate, which effectively prevent the titanium alloy from deforming during welding, improve the welding production efficiency and improve the mechanical property of a welding seam. The invention comprises the following technical scheme for achieving the aim:
a titanium alloy thick plate welding device is characterized by comprising:
the vacuum welding box provides a vacuum environment for welding work;
the vacuum pump is communicated with the inner space of the vacuum welding box through a pipeline and is used for pumping air in the welding box to form a vacuum environment;
the water-cooling back argon welding tool is arranged in the vacuum welding box and used for bearing and fixing a workpiece so as to facilitate welding;
the argon inlet is communicated with the water-cooling back argon welding tool through a pipeline and supplies argon to the water-cooling back argon welding tool;
and the refrigeration circulating water tank is communicated with the water-cooling argon-back welding tool through a pipeline, and circulating water is introduced into the refrigeration circulating water tank for cooling.
The water-cooled back argon welding tool further comprises:
the argon outlet holes are distributed in the middle of the top surface of the tool body in a matrix manner and are arranged in a strip shape, and the argon outlet holes are communicated with an argon inlet pipeline;
a pair of water storage cabins are arranged at two sides of the argon outlet hole zone and used for introducing cooling water, and baffle plates which are arranged in a staggered mode are arranged in the water storage cabins so as to increase a water flow path and enhance the cooling effect; the inlet and outlet of the water storage cabin are respectively communicated with the inlet and outlet of the refrigeration cycle water tank; the top of the water storage cabin is provided with a red copper sealing plate which is used as a cover plate of the upper opening of the water storage cabin and covers the water storage cabin;
the upper parts of the two red copper seal plates are respectively provided with a pressure plate, the pressure plates can be fixed on the tool body through positioning screws, and the pressure plates are used for fixing workpieces to be welded;
the pressure plate is provided with a temperature measuring device.
A titanium alloy thick plate welding process comprises the following steps:
firstly, a preparation step:
1. manufacturing a set of the titanium alloy thick plate welding device;
2. setting the bevel angle of a workpiece
Groove setting principle: the thickness of the plate is less than 30mm and less than 40mm, a single U-shaped groove is formed, and the size of the groove is 8-10 mm; the thickness of the plate is less than 40mm and less than 80mm, and a double U-shaped groove is formed, and the groove size is 10-12 mm.
3. Preparing before welding:
and polishing the area to be welded, removing surface oxides, and cleaning the welding wire and the area to be welded by using an organic solvent.
4. Installing a welding tool:
the method comprises the following steps of putting a cleaned workpiece into a vacuum welding box and placing the workpiece on a water-cooling back argon welding tool, fixing the workpiece by a pressing block, inserting a fastening bolt into a positioning hole for fastening, enabling the workpiece to be tightly attached to a red copper sealing plate, facilitating heat transfer, starting a cooling water tank, enabling cooling liquid to enter a liquid storage cabin through an inlet, conducting drainage through a baffle plate, enabling the cooling liquid to be full of the internal liquid storage cabin, then flowing back to a refrigerating liquid circulation box through a water outlet to form circulation, enabling an argon inlet to be connected with an argon inlet of the water-cooling back argon tool through a gas pipe, opening a vacuum pump to discharge air in the welding box to form vacuum, filling argon into the argon inlet, enabling the argon to uniformly overflow through an argon outlet hole in the water-cooling back argon tool, and filling the whole welding box. And monitoring the temperature of the workpiece in real time by a digital display temperature measuring instrument.
Secondly, welding:
manual argon tungsten-arc welding is adopted, multiple layers and multiple channels are welded, and the temperature between the channels is controlled; the welding current is 125A, the pulse current is 100A, the pulse frequency is 500HZ, the pulse width is 60%, the welding speed is 2mm/m, the arc height is 1-2mm, the argon flow is 8-10L/min, the argon purity is 99.999%, and the inter-channel temperature is controlled below 150 ℃.
The invention has the beneficial effects that:
effectively prevent the titanium alloy from deforming during welding, improve the welding production efficiency and improve the mechanical property of the welding seam.
Drawings
FIG. 1 is a schematic view of a welding apparatus
Figure 2 water-cooling back argon frock structure chart.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings
Referring to fig. 1 and 2, the welding device for titanium alloy thick plates comprises:
the vacuum welding box 1 is used for providing a vacuum environment for welding work;
the vacuum pump 2 is communicated with the inner space of the vacuum welding box through a pipeline and used for pumping air in the welding box to form a vacuum environment;
the water-cooling back argon welding tool 3 is arranged in the vacuum welding box and is used for bearing and fixing the workpiece 4 so as to carry out welding;
the argon gas inlet 5 is communicated with the water-cooling back argon welding tool through a pipeline and supplies argon gas to the water-cooling back argon welding tool;
and the refrigeration cycle water tank 6 is communicated with the water-cooling argon-back welding tool through a pipeline, and circulating water is introduced into the water-cooling argon-back welding tool for cooling.
The water-cooled argon-backed welder 3 further comprises:
the argon outlet holes 8 are distributed in the middle of the top surface of the tool body in a matrix manner and are arranged in a strip shape, and the argon outlet holes are communicated with an argon inlet pipeline 14;
a pair of water storage chambers 16 are arranged on two sides of the argon outlet hole zone and used for introducing cooling water, and baffle plates 11 which are arranged in a staggered mode are arranged in the water storage chambers 16 so as to increase a water flow path and enhance the cooling effect; the inlet and outlet of the water storage cabin 16 are respectively communicated with the inlet and outlet 7 and 13 of the refrigeration cycle water tank; the top of the water storage cabin 16 is provided with a red copper seal plate 17 which is used as a cover plate of the upper opening of the water storage cabin and covers the water storage cabin 16.
The upper parts of the two red copper seal plates 17 are respectively provided with a pressure plate 10, the pressure plate 10 can be fixed on the tool body through a positioning screw 9 and a positioning screw hole 12 on the tool body, and the pressure plate 10 is used for fixing a workpiece to be welded.
A temperature measuring device 15, preferably a digital thermometer, is provided on the pressure plate 10.
The titanium alloy thick plate welding process comprises the following steps:
firstly, a preparation step:
1. manufacturing a set of the titanium alloy thick plate welding device;
2. installing a welding tool:
the cleaned workpiece 4 is placed in a vacuum welding box 1 and placed on a water-cooling argon-back welding tool 3, the workpiece is fixed by a pressing block 10, a fastening bolt 9 is inserted into a positioning hole 12 for fastening, the workpiece is tightly attached to a red copper sealing plate 17, heat transfer is facilitated, a cooling water tank 6 is started, cooling liquid enters a liquid storage tank 16 through an inlet 7, the cooling liquid is drained through a baffle plate 11, the internal liquid storage tank is filled with the cooling liquid, then the cooling liquid flows back to a refrigerating liquid circulation box through a water outlet 13 to form circulation, an argon inlet 5 is connected with an argon inlet 14 of the water-cooling argon-back tool through a gas pipe, a vacuum pump 2 is started to discharge air in the welding box to form vacuum, argon is filled from the argon inlet 5, and the argon uniformly overflows through an argon outlet 8) in the water-cooling argon-back tool, and the whole welding box is filled. And the temperature of the workpiece is monitored in real time through the digital display temperature measuring instrument 15.
Secondly, welding:
the invention applies a high-frequency pulse technology, a heat exchange technology and a narrow gap welding technology, newly develops a titanium alloy thick-wall part welding method, solves the problems of multiple welding passes, large thermal response zone joint residual stress, large welding deformation and low welding efficiency of a thick-wall titanium alloy structural part, solves the problem of thick weld joint structure caused by large heat input in the welding process, and ensures the comprehensive mechanical property of the titanium alloy after welding. The method specifically comprises the following steps:
1) setting of groove angle:
the test piece groove adopts a narrow gap groove, and the narrow gap groove has the advantages that the sectional area of a welding seam is greatly reduced, materials and a large amount of electric energy are saved, the production efficiency is improved, meanwhile, the welding production cost is greatly reduced, the heat input is small, the residual stress and the welding deformation of a welding joint are reduced, and the side wall of the groove is favorable for the metallurgy protection of the welding zone. Groove setting principle: the thickness of the plate is less than 30mm and less than 40mm, a single U-shaped groove is formed, and the groove size is 8-10 mm. The thickness of the plate is less than 40mm and less than 80mm, and a double U-shaped groove is formed, and the groove size is 10-12 mm.
2) Preparing before welding:
the alloy milling head is used for polishing the area to be welded to remove surface oxides, and the titanium alloy can be effectively prevented from being polluted by polishing with the alloy milling head. And cleaning the welding wire and the area to be welded by adopting acetone or absolute ethyl alcohol. After polishing, the cloth is wrapped by clean gauze to avoid secondary pollution.
3) Installing a welding tool and setting technological parameters:
and (3) putting the cleaned workpiece and the welding wire into a vacuum welding box, and placing the vacuum welding box on a water-cooling back argon welding tool, wherein the welding wire is Ti28 and has the diameter of 2.4 mm. Fixing the workpiece by using a pressing block, enabling the workpiece to be tightly attached to the red copper sealing plate, facilitating heat transfer, starting a refrigerating fluid circulation box, setting the temperature to be-5 ℃ to form circulation, starting a vacuum pump to exhaust air in the welding box to form vacuum of 1.5-5 pa, filling 99.999% argon, enabling the flow of the argon to be 15-20L/min, and enabling the argon filling time to be 5min until the whole welding box is filled. And monitoring the temperature of the workpiece in real time by a digital display temperature measuring instrument.
4) Welding:
the welding current is 125A, the pulse current is 100A, the pulse frequency is 500HZ, the pulse width is 60%, the welding speed is 2mm/m, the arc height is 1-2mm, the argon flow is 8-10L/min, and the argon purity is 99.999%. The temperature between the monitoring tracks is controlled below 150 ℃ by adopting multi-layer and multi-channel welding without swinging. And (3) judging the quality of each section of welded joint: when the welding seam is cooled, the welding seam is silvery white, and the quality of the welding seam is optimal; when the welding line is cooled, the welding line is slightly yellow, and the quality of the welding line is inferior; when the weld is cooled, it appears blue or gray, and the weld quality is poor. If the phenomenon of bluing and graying of the welding line is found, the operation is immediately stopped, and the alloy milling head is used for polishing and then welding again.
Claims (3)
1. A titanium alloy thick plate welding device is characterized by comprising:
the vacuum welding box provides a vacuum environment for welding work;
the vacuum pump is communicated with the inner space of the vacuum welding box through a pipeline and is used for pumping air in the welding box to form a vacuum environment;
the water-cooling back argon welding tool is arranged in the vacuum welding box and used for bearing and fixing a workpiece so as to facilitate welding;
the argon inlet is communicated with the water-cooling back argon welding tool through a pipeline and supplies argon to the water-cooling back argon welding tool;
and the refrigeration circulating water tank is communicated with the water-cooling argon-back welding tool through a pipeline, and circulating water is introduced into the refrigeration circulating water tank for cooling.
2. The titanium alloy slab welding apparatus of claim 1, wherein said water-cooled back argon welding tool further comprises:
the argon outlet holes are distributed in the middle of the top surface of the tool body in a matrix manner and are arranged in a strip shape, and the argon outlet holes are communicated with an argon inlet pipeline;
a pair of water storage cabins are arranged at two sides of the argon outlet hole zone and used for introducing cooling water, and baffle plates which are arranged in a staggered mode are arranged in the water storage cabins so as to increase a water flow path and enhance the cooling effect; the inlet and outlet of the water storage cabin are respectively communicated with the inlet and outlet of the refrigeration cycle water tank; the top of the water storage cabin is provided with a red copper sealing plate which is used as a cover plate of the upper opening of the water storage cabin and covers the water storage cabin;
the upper parts of the two red copper seal plates are respectively provided with a pressure plate, the pressure plates can be fixed on the tool body through positioning screws, and the pressure plates are used for fixing workpieces to be welded;
the pressure plate is provided with a temperature measuring device.
3. A titanium alloy thick plate welding process comprises the following steps:
firstly, a preparation step:
1. manufacturing a set of titanium alloy thick plate welding device according to claim 2;
2. setting a bevel angle of a workpiece;
groove setting principle: the thickness of the plate is less than 30mm and less than 40mm, a single U-shaped groove is formed, and the size of the groove is 8-10 mm; the thickness of the plate is less than 40mm and less than 80mm, a double U-shaped groove is formed, and the size of the groove is 10-12 mm;
3. preparing before welding:
polishing the area to be welded, removing surface oxides, and cleaning the welding wire and the area to be welded by using an organic solvent;
4. installing a welding tool:
the cleaned workpiece is placed in a vacuum welding box and placed on a water-cooling back argon welding tool, the workpiece is fixed by a pressing block, a fastening bolt is inserted into a positioning hole for fastening, the workpiece is tightly attached to a red copper sealing plate, heat transfer is facilitated, the cooling water box is started, cooling liquid enters a liquid storage cabin through an inlet, the cooling liquid is drained through a flow baffle plate to fill the internal liquid storage cabin, then the cooling liquid flows back to a refrigerating liquid circulation box through a water outlet to form circulation, an argon inlet is connected with an argon inlet of the water-cooling back argon tool through a gas pipe, a vacuum pump is started to discharge air in the welding box to form vacuum, argon is filled from the argon inlet, the argon uniformly overflows through an argon outlet hole in the water-cooling back argon tool, the whole welding box is filled, and the temperature of the workpiece is monitored in real time through a digital display thermometer;
secondly, welding:
manual argon tungsten-arc welding is adopted, multiple layers and multiple channels are welded, and the temperature between the channels is controlled; the welding current is 125A, the pulse current is 100A, the pulse frequency is 500HZ, the pulse width is 60%, the welding speed is 2mm/m, the arc height is 1-2mm, the argon flow is 8-10L/min, the argon purity is 99.999%, and the inter-channel temperature is controlled below 150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111518402.7A CN114226928B (en) | 2021-12-13 | 2021-12-13 | Titanium alloy thick plate welding process and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111518402.7A CN114226928B (en) | 2021-12-13 | 2021-12-13 | Titanium alloy thick plate welding process and device |
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| Publication Number | Publication Date |
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| CN114226928A true CN114226928A (en) | 2022-03-25 |
| CN114226928B CN114226928B (en) | 2023-11-21 |
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|---|---|---|---|---|
| CN201124286Y (en) * | 2007-09-03 | 2008-10-01 | 中国电子科技集团公司第二研究所 | Vacuum argon filling case |
| CN101293303A (en) * | 2008-06-13 | 2008-10-29 | 中国船舶重工集团公司第七二五研究所 | TIG automatic welding technique for titanium alloy thick plate narrow interstice |
| CN104439707A (en) * | 2014-12-22 | 2015-03-25 | 哈尔滨工业大学 | Hybrid laser-arc welding device for medium-thickness titanium alloy |
| CN106346171A (en) * | 2016-11-07 | 2017-01-25 | 苏州大学 | High-nitrogen steel pressure welding device and method for welding high-nitrogen steel by using same |
| CN207746575U (en) * | 2017-09-12 | 2018-08-21 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of fixture for laser welding |
| CN211966274U (en) * | 2019-12-05 | 2020-11-20 | 中国核工业二三建设有限公司 | Tool clamp for automatic welding of stainless steel sheet |
-
2021
- 2021-12-13 CN CN202111518402.7A patent/CN114226928B/en active Active
Patent Citations (6)
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| CN201124286Y (en) * | 2007-09-03 | 2008-10-01 | 中国电子科技集团公司第二研究所 | Vacuum argon filling case |
| CN101293303A (en) * | 2008-06-13 | 2008-10-29 | 中国船舶重工集团公司第七二五研究所 | TIG automatic welding technique for titanium alloy thick plate narrow interstice |
| CN104439707A (en) * | 2014-12-22 | 2015-03-25 | 哈尔滨工业大学 | Hybrid laser-arc welding device for medium-thickness titanium alloy |
| CN106346171A (en) * | 2016-11-07 | 2017-01-25 | 苏州大学 | High-nitrogen steel pressure welding device and method for welding high-nitrogen steel by using same |
| CN207746575U (en) * | 2017-09-12 | 2018-08-21 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of fixture for laser welding |
| CN211966274U (en) * | 2019-12-05 | 2020-11-20 | 中国核工业二三建设有限公司 | Tool clamp for automatic welding of stainless steel sheet |
Non-Patent Citations (1)
| Title |
|---|
| 国家质量监督检验检疫总局特种设备安全监察局: "《全国压力管道设计审批人员培训教材》", 中国石化出版社, pages: 267 * |
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| CN114226928B (en) | 2023-11-21 |
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