CN116851870A - Underwater wet-process arc welding or additive manufacturing device and application method - Google Patents
Underwater wet-process arc welding or additive manufacturing device and application method Download PDFInfo
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- CN116851870A CN116851870A CN202310624075.6A CN202310624075A CN116851870A CN 116851870 A CN116851870 A CN 116851870A CN 202310624075 A CN202310624075 A CN 202310624075A CN 116851870 A CN116851870 A CN 116851870A
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- 238000003466 welding Methods 0.000 title claims abstract description 130
- 239000000654 additive Substances 0.000 title claims abstract description 30
- 230000000996 additive effect Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000002131 composite material Substances 0.000 claims abstract description 30
- 239000002893 slag Substances 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 5
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 229910052790 beryllium Inorganic materials 0.000 claims description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 4
- 238000007599 discharging Methods 0.000 abstract description 12
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 230000008439 repair process Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- WEOVSIBZCGHNQQ-OARHJJEASA-N (2s,3s,4s,5r,6r)-3,4,5-trihydroxy-6-[1-[[2-(1-hydroxyethyl)-1-benzofuran-7-yl]oxy]-3-(propan-2-ylamino)propan-2-yl]oxyoxane-2-carboxylic acid Chemical compound C=1C=CC=2C=C(C(C)O)OC=2C=1OCC(CNC(C)C)O[C@@H]1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O WEOVSIBZCGHNQQ-OARHJJEASA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- B23K9/00—Arc welding or cutting
- B23K9/0061—Underwater arc 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
- B23K9/04—Welding for other purposes than joining, e.g. built-up 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
- B23K9/095—Monitoring or automatic control of welding parameters
-
- 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
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
-
- 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
- B23K9/235—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
- B23K9/24—Features related to electrodes
- B23K9/26—Accessories for electrodes, e.g. ignition tips
-
- 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
Abstract
The invention discloses an underwater wet-process arc welding or additive manufacturing device and a using method thereof, wherein the underwater wet-process arc welding or additive manufacturing device comprises a composite welding torch, an MIG welding machine, a wire feeder, a welding robot and a pressurizing system, wherein the composite welding torch comprises a conductive nozzle, a fixed wall, a hole-discharging nozzle and an arc nozzle, the conductive nozzle is arranged in a space surrounded by the fixed wall, a wire feeding channel connected with the conductive nozzle is arranged in the middle of the fixed wall, the wire feeding channel is connected with the wire feeder, the inner sides of the two ends of the bottom of the fixed wall are respectively connected with the hole-discharging nozzle, the outer sides of the two ends of the fixed wall are respectively provided with a water inlet communicated with the hole-discharging nozzle, the water inlet is connected with the pressurizing system, the other two ends of the bottom of the fixed wall are respectively connected with the arc nozzle, and the arc nozzles at the two ends are respectively positioned at two sides of the conductive nozzle. The invention can respectively clean attachments on the surface of the reset to be repaired before and after the operation, and can synchronously clean slag and splash attached on the surfaces of welding and material-adding components during the operation, thereby improving the weld joint formation and the quality of welded joints.
Description
Technical Field
The invention relates to the technical field of underwater welding and additive repairing, in particular to an underwater wet arc welding or additive manufacturing device and a using method.
Background
The ocean engineering structure is subjected to impact and corrosion of seawater for a long time, and is extremely easy to crack and damage, so that serious safety accidents and economic losses are caused. The underwater wet arc welding and material-increasing in-situ repairing technology is widely applied to in-situ rapid repairing of damaged parts of structures such as ships due to the advantages of simple equipment, high repairing efficiency and the like. However, the characteristics of high pressure, quick cooling and oxyhydrogen enrichment of the water environment seriously affect the stability of the wet arc welding and the material adding process, so that the forming and performance of the wet arc welding and material adding in-situ repair structure are greatly reduced. At present, the existing underwater wet welding and additive repairing technology still depends on a submerged welder to hold an arc welding rod for completion, the operation efficiency is low, the stability of the structural quality is difficult to ensure, and in order to ensure the operation safety, the water area application range is also greatly limited. In recent years, the protection of underwater wet arc welding and repairing processes by means of slag-gas combined protection effect through the use of flux-cored wires is an important development direction in the future in the field. Meanwhile, the use of the flux-cored wire can also improve the repair efficiency and precision, realize the automation of the repair process and repair equipment, and break through deeper and more complex water depth limitation. However, it follows that slag adhesion and metal splatter scattered on the surface of the structure due to the slag former in flux-cored wires tend to be difficult to remove, which poses a great challenge to the automation of repair equipment. This effect is more pronounced in non-transverse or vertical welding processes.
Disclosure of Invention
The invention aims to provide an underwater wet-process arc welding or additive manufacturing device and a using method thereof, which are used for solving the problems in the prior art, cleaning attachments on the surface of a to-be-repaired replacement device before and after operation, synchronously cleaning slag and splash attached on the surfaces of welding and additive components during operation, and improving weld joint forming and welding joint quality.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides an underwater wet arc welding or additive manufacturing device, which comprises a composite welding torch, an MIG welding machine, a wire feeder, a welding robot and a pressurizing system, wherein the welding robot is connected with the composite welding torch, the composite welding torch is connected with the MIG welding machine and comprises a conductive nozzle, a fixed wall, a hole-discharging nozzle and arc-shaped nozzles, the conductive nozzle is arranged in a space surrounded by the fixed wall, a wire feeding channel connected with the conductive nozzle is arranged in the middle of the fixed wall, the wire feeding channel is connected with the wire feeder, the inner sides of two ends of the bottom of the fixed wall are respectively connected with one row Kong Pentou, the outer sides of the two ends of the fixed wall are respectively provided with water inlets communicated with each row Kong Pentou, each water inlet is connected with the pressurizing system, each row Kong Pentou faces to an operation area and is used for releasing high-pressure water beams to clear molten slag and welding splashes on the surface of a welding seam or additive structure, the other two ends of the bottom of the fixed wall are respectively connected with one arc-shaped nozzle, each arc-shaped nozzle is respectively communicated with each water inlet, the nozzles at two ends are respectively positioned at the two ends of the nozzle and the two ends of the nozzle are respectively located at the two ends of the nozzle and the two ends of the arc-shaped nozzle are respectively used for cleaning the high-pressure beams before and after the cleaning operation and the high-pressure beam cleaning operation.
Preferably, the fixed wall is connected with two end bottoms of the row Kong Pentou, the two end bottoms of the row Kong Pentou are respectively and hermetically connected with a movable wall, the bottom of the movable wall is provided with an outwards inclined linear spout and an inwards inclined water outlet hole, the linear spout and the water outlet hole are communicated with the water inlet hole through a first water passing channel which is communicated with each other in the movable wall and the fixed wall, and a wear-resistant nozzle is connected in the water outlet hole.
Preferably, a sealing gasket is arranged between the bottom surface of the fixed wall and the top surface of the movable wall, and the fixed wall and the movable wall are fixedly connected together through bolts; the arc shower nozzle is characterized in that a sealing gasket is arranged between the top surface of the arc shower nozzle and the bottom surface of the fixed wall, an arc water jet is arranged at the bottom of the arc shower nozzle, the arc water jet is communicated with a second water passing channel which is communicated with each other in the fixed wall through the arc shower nozzle, and the arc shower nozzle is fixedly connected with the fixed wall through bolts.
Preferably, the welding machine further comprises a control system, wherein the MIG welding machine, the wire feeder, the welding robot and the pressurizing system are all connected with the control system.
Preferably, the fixed wall, the movable wall and the row Kong Pentou are made of beryllium bronze, and the arc-shaped spray heads are made of stainless steel.
Preferably, the pressurizing system comprises a water pump and a booster pump, the water pump is connected with the booster pump through a pressure-resistant water pipe, the booster pump is connected with the two water inlet holes through the pressure-resistant water pipe, and the pressure generated by the booster pump is more than or equal to 20MPa.
Preferably, the surface of the row Kong Pentou provided with the water outlet holes is disposed obliquely downward and toward the rear of the contact tip in the moving direction of the contact tip; the included angle between the surface of the row Kong Pentou provided with the water outlet hole and the plane formed by the axis of the wire feeding channel and the moving direction of the conductive nozzle is 40-70 degrees, and the included angle between the surface of the row Kong Pentou provided with the water outlet hole and the plane of the bottom end of the fixed wall is 45-75 degrees.
Preferably, the lower ends of the arc-shaped spray head and the movable wall are lower than the plane where the lower ends of the contact tips are located by 15mm to 20mm.
Preferably, the arc-shaped spray head is a concave arc-shaped spray head or a convex arc-shaped spray head.
The use method of the underwater wet arc welding or additive manufacturing device comprises the following steps:
(1) Connecting and debugging the composite welding torch, the MIG welding machine, the wire feeder, the welding robot and the pressurizing system;
(2) The flux-cored wire in the wire feeder is led into the composite welding torch, the pressurizing system is started to introduce high-pressure water flow into the composite welding torch, the composite welding torch is placed above a part to be repaired under the auxiliary action of the welding robot, and the surface of a substrate to be repaired is cleaned along the repairing path;
(3) Adjusting welding or material adding repairing parameters and water flow pressure according to operation conditions, guiding a flux-cored wire to exceed the bottom end of the conducting nozzle, and starting the MIG welder after keeping the elongation of 16mm, and performing welding or material adding operation along a set path;
(4) And after the operation is finished, the MIG welding machine is closed, and the composite welding torch continues to move until the composite welding torch completely exceeds an operation area, and then the pressurizing system is closed, so that the operation is finished.
Compared with the prior art, the invention has the following technical effects:
the invention provides an underwater wet-process arc welding or material-increasing manufacturing device and a use method thereof.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an underwater wet arc welding or additive manufacturing apparatus provided by the present invention;
FIG. 2 is a schematic cross-sectional view of a composite welding torch according to the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view of the structure of the arc nozzle in the composite welding torch of the present invention when the arc nozzle is a concave arc nozzle;
FIG. 5 is a schematic view of the structure of the arc nozzle in the composite welding torch of the present invention when the arc nozzle is a convex arc nozzle;
in the figure: 1-composite welding torch, 2-MIG welding machine, 3-wire feeder, 4-welding robot, 5-pressurizing system, 6-conducting nozzle, 7-fixed wall, 8-row hole spray head, 9-arc spray head, 10-wire feeding channel, 11-water inlet, 12-movable wall, 13-linear spray nozzle, 14-water outlet, 15-first water channel, 16-sealing gasket, 17-control system, 18-water pump, 19-booster pump, 20-flux cored wire, 21-arc water spray port and 22-second water channel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an underwater wet-process arc welding or additive manufacturing device and a using method thereof, which are used for solving the problems in the prior art, cleaning attachments on the surface to be repaired respectively before and after operation, synchronously cleaning slag and splash attached on the surfaces of welding and additive components during operation, and improving weld joint formation and weld joint quality.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1-4, this embodiment provides an underwater wet arc welding or additive manufacturing device, including a composite welding torch 1, an MIG welding machine 2, a wire feeder 3, a welding robot 4 and a pressurizing system 5, the welding robot 4 is connected with the composite welding torch 1, the composite welding torch 1 is connected with the MIG welding machine 2, the composite welding torch 1 includes a conductive nozzle 6, a fixed wall 7, a row Kong Pentou and arc spray heads 9, the conductive nozzle 6 is disposed in a space surrounded by the fixed wall 7, a wire feeding channel 10 connected with the conductive nozzle 6 is disposed in the middle of the fixed wall 7, the wire feeding channel 10 is connected with the wire feeder 3, two end inner sides of the bottom of the fixed wall 7 are respectively connected with a row of hole spray heads 8, water inlet holes 11 communicated with the row of the hole spray heads 8 are respectively disposed on the outer sides, the water inlet holes 11 are connected with the pressurizing system 5, the row of the hole spray heads 8 face an operation area for releasing high-pressure water beams to remove welding seams or splashes, the other two ends of the bottom of the fixed wall 7 are respectively connected with an arc spray heads 9, the arc spray heads 9 are respectively communicated with the water inlet holes 11, the spray heads 9 at two ends are respectively located at two sides of the two ends of the nozzle 6 respectively for pre-pressure cleaning operation after the water flow is performed, and the arc spray heads 6 are respectively cleaned, and the water flow is discharged.
According to the device, the arc-shaped spray heads 9 are respectively arranged on two sides of the conducting nozzle 6, the two arc-shaped spray heads 9 are respectively positioned on the front side and the rear side of the conducting nozzle 6, the arc-shaped spray heads 9 on the two sides release high-pressure water flow under the action of the pressurizing system 5, attachments on the surface to be repaired can be cleaned respectively before and after operation, the inner sides of two ends of the bottom of the fixed wall 7 are respectively connected with the hole-discharging spray heads 8, the two hole-discharging spray heads 8 are respectively positioned on the left side and the right side of the conducting nozzle 6, when in operation, the hole-discharging spray heads Kong Pentou release high-pressure water beams under the action of the pressurizing system 5, so that molten slag and welding splashes on the surface of a welding seam or an additive structure can be synchronously cleaned, a uniform and flat surface is obtained, and conditions are created for the welding or the additive operation of the next pass, so that the welding seam forming and the welding joint quality can be improved.
In this embodiment, the bottoms of two ends of the fixed wall 7 connected with the hole-arranging spray head 8 are respectively and hermetically connected with a movable wall 12, the bottoms of the movable wall 12 are provided with an outwards inclined linear spray nozzle 13 and an inwards inclined water outlet hole 14, the linear spray nozzle 13 and the water outlet hole 14 are communicated with a water inlet hole 11 through a first water channel 15 which is communicated with each other in the movable wall 12 and the fixed wall 7, and a wear-resistant nozzle is connected in the water outlet hole 14. The splash attached to the surface of the substrate can be cleaned by releasing high-pressure water beams through the water outlet holes 14 and the wear-resistant nozzles connected in the water outlet holes 14, and a high-flow-rate water curtain can be formed through the linear nozzles 13, so that the surface of the substrate to be repaired can be pre-cleaned. After the water curtain is formed, the accumulated redundant gas in the cavity surrounded by the fixed wall 7 is carried away from the welding area in the form of tiny bubbles under the action of high-pressure water flow, instead of periodically floating up in the form of large-size bubbles, so that the periodical swing of the welding torch caused by the internal buoyancy change is reduced, and the stability of the structure is enhanced. Wherein, each water outlet hole in the hole-discharging spray head 8 is connected with a wear-resistant nozzle.
In the embodiment, a sealing gasket 16 is arranged between the bottom surface of the fixed wall 7 and the top surface of the movable wall 12, and the fixed wall 7 and the movable wall 12 are fixedly connected together through bolts; the sealing gasket 16 is also arranged between the top surface of the arc-shaped spray head 9 and the bottom surface of the fixed wall 7, an arc-shaped water spray opening 21 is arranged at the bottom of the arc-shaped spray head 9, the arc-shaped water spray opening 21 is communicated with the water inlet 11 through a second water passing channel 22 which is communicated with each other in the arc-shaped spray head 9 and the fixed wall 7, and the arc-shaped spray head 9 is fixedly connected with the fixed wall 7 through bolts. The sealing gasket 16 ensures the connection air tightness of the fixed wall 7, the movable wall 12 and the arc-shaped spray nozzle 9, and the fixed wall 7, the movable wall 12 and the arc-shaped spray nozzle 9 are connected through bolts, so that the connection is convenient and quick.
In the embodiment, the welding machine further comprises a control system 17, and the MIG welding machine 2, the wire feeder 3, the welding robot 4 and the pressurizing system 5 are all connected with the control system 17. Parameters of the MIG welder 2 can be adjusted through a control system, synchronous wire feeding of the wire feeder 3 is controlled, water flow pressure can be controlled, and movement of the welding robot 4 is controlled.
In this embodiment, the fixed wall 7, the movable wall 12 and the hole-arranging nozzle 8 are made of beryllium bronze, and the arc-shaped nozzle 9 is made of stainless steel.
In this embodiment, the pressurizing system 5 includes a water pump 18 and a booster pump 19, the water pump 18 is connected with the booster pump 19 through a pressure-resistant water pipe, the booster pump 19 is connected with the two water inlet holes 11 through the pressure-resistant water pipe, and the pressure generated by the booster pump 19 is greater than or equal to 20MPa.
In the present embodiment, the surface of the hole array shower head 8 provided with the water outlet holes is arranged obliquely downward and faces to the rear of the contact tip 6 in the moving direction of the contact tip 6; the included angle between the surface of the hole-discharging nozzle 8 provided with the water outlet and the plane formed by the axis of the wire feeding channel 10 and the moving direction of the conductive nozzle 6 is 40-70 degrees, preferably 60 degrees, and the included angle between the surface of the hole-discharging nozzle 8 provided with the water outlet and the plane of the bottom end of the fixed wall 7 is 45-75 degrees, preferably 60 degrees. The surface of the hole-discharging spray head 8 provided with the water outlet is obliquely downwards arranged, and faces the rear of the conductive nozzle 6 in the moving direction of the conductive nozzle 6, high-pressure water beams generated by the hole-discharging spray head 8 follow the conductive nozzle 6 to synchronously clean slag and welding spatter on the rear welding seam or the surface of the material-increasing structure, the high-pressure water beams can generate an oblique acting force on the slag and the welding spatter, the backward component force of the oblique acting force can be beneficial to cleaning the slag and the welding spatter, and the cleaning effect is improved.
In this embodiment, the lower ends of the arc nozzle 9 and the movable wall 12 are each 15mm to 20mm, preferably 16mm, below the plane in which the lower ends of the contact tips 6 lie. After the arrangement, a stable cavity consisting of water vapor and arc gas is formed in the arc combustion process during operation, the adverse effect of water environment near the arc is weakened or even eliminated, and the structure of the underwater wet-process arc weldment or the additive is further optimized.
In this embodiment, the arc nozzle 9 is a concave arc nozzle, and the concave arc nozzle is suitable for underwater wet arc material-increasing operation. In other embodiments, as shown in fig. 5, the arc nozzle 9 may also be a convex arc nozzle, where the convex arc nozzle is suitable for multi-layer and multi-butt welding operation of the thick plate underwater wet method. Through setting up arc shower nozzle 9, can be to the surface of the wet process electric arc welding seam or multilayer multichannel material adding structure of having the groove to clear up in advance and clear up the processing after, enlarge the clearance scope and increase the clearance number of times, strengthen the surface cleaning effect.
The use method of the underwater wet arc welding or additive manufacturing device comprises the following steps:
(1) Connecting and debugging a composite welding torch 1, an MIG welding machine 2, a wire feeder 3, a welding robot 4 and a pressurizing system 5;
(2) The method comprises the steps of guiding a flux-cored wire 20 in a wire feeder 3 into a composite welding torch 1, starting a pressurizing system 5 to introduce high-pressure water flow into the composite welding torch 1, placing the composite welding torch 1 above a part to be repaired under the auxiliary action of a welding robot 4, and cleaning the surface of a substrate to be repaired along a repairing path;
(3) Adjusting welding or material adding repairing parameters and water flow pressure according to operation conditions, guiding the flux-cored wire 20 to exceed the bottom end of the conductive nozzle 6, keeping the elongation of 16mm, and starting the MIG welder 2 to perform welding or material adding operation along a set path;
(4) After the operation is finished, the MIG welder 2 is closed, the composite welding torch 1 continues to move to completely exceed the operation area, and the pressurizing system 5 is closed, so that the operation is finished.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. An underwater wet arc welding or additive manufacturing device is characterized in that: including compound welding torch, MIG welding machine, wire feeder, welding robot and supercharging system, welding robot with compound welding torch is connected, compound welding torch with MIG welding machine is connected, compound welding torch includes conductive nozzle, fixed wall, row hole shower nozzle and arc shower nozzle, the conductive nozzle set up in the space that the fixed wall encloses, the fixed wall middle part is equipped with and connects the wire feeding passageway of conductive nozzle, the wire feeding passageway with wire feeder is connected, the fixed wall bottom both ends inboard is connected respectively one row Kong Pentou, the outside set up respectively with each row Kong Pentou feed water hole that communicates, each the feed water hole with supercharging system connects, each row Kong Pentou is towards the operation region for release high-pressure water beam clear up welding seam or material increase structural surface's slag and welding splash, one arc shower nozzle is connected respectively to other both ends of fixed wall bottom, each arc shower nozzle respectively with each feed water hole intercommunication, both ends arc shower nozzle are located respectively the both sides of conductive nozzle are used for releasing high-pressure rivers respectively and clear up the operation after the operation is carried out to the operation region.
2. The underwater wet arc welding or additive manufacturing apparatus of claim 1, wherein: the fixed wall is connected with the movable wall is respectively and hermetically connected with the bottoms of the two ends of the row Kong Pentou, the bottoms of the movable wall are provided with an outwards inclined linear spout and an inwards inclined water outlet hole, the linear spout and the water outlet hole are communicated with the water inlet hole through a first water channel which is communicated with each other in the movable wall and the fixed wall, and a wear-resistant nozzle is connected in the water outlet hole.
3. The underwater wet arc welding or additive manufacturing apparatus of claim 2, wherein: a sealing gasket is arranged between the bottom surface of the fixed wall and the top surface of the movable wall, and the fixed wall and the movable wall are fixedly connected together through bolts; the arc shower nozzle is characterized in that a sealing gasket is arranged between the top surface of the arc shower nozzle and the bottom surface of the fixed wall, an arc water jet is arranged at the bottom of the arc shower nozzle, the arc water jet is communicated with a second water passing channel which is communicated with each other in the fixed wall through the arc shower nozzle, and the arc shower nozzle is fixedly connected with the fixed wall through bolts.
4. The underwater wet arc welding or additive manufacturing apparatus of claim 1, wherein: the welding robot further comprises a control system, and the MIG welding machine, the wire feeder, the welding robot and the pressurizing system are all connected with the control system.
5. The underwater wet arc welding or additive manufacturing apparatus of claim 2, wherein: the fixed wall, the movable wall and the row Kong Pentou are made of beryllium bronze, and the arc-shaped spray heads are made of stainless steel.
6. The underwater wet arc welding or additive manufacturing apparatus of claim 1, wherein: the pressurizing system comprises a water pump and a pressurizing pump, wherein the water pump is connected with the pressurizing pump through a pressure-resistant water pipe, the pressurizing pump is connected with two water inlets through the pressure-resistant water pipe, and the pressure intensity generated by the pressurizing pump is more than or equal to 20MPa.
7. The underwater wet arc welding or additive manufacturing apparatus of claim 1, wherein: the surface of the row Kong Pentou provided with the water outlet holes is arranged obliquely downwards and faces to the rear of the contact tip in the moving direction of the contact tip; the included angle between the surface of the row Kong Pentou provided with the water outlet hole and the plane formed by the axis of the wire feeding channel and the moving direction of the conductive nozzle is 40-70 degrees, and the included angle between the surface of the row Kong Pentou provided with the water outlet hole and the plane of the bottom end of the fixed wall is 45-75 degrees.
8. The underwater wet arc welding or additive manufacturing apparatus of claim 2, wherein: the lower ends of the arc-shaped spray head and the movable wall are lower than the plane where the lower end of the contact tip is positioned by 15mm to 20mm.
9. The underwater wet arc welding or additive manufacturing apparatus of claim 1, wherein: the arc-shaped spray heads are concave arc-shaped spray heads or convex arc-shaped spray heads.
10. A method of using an underwater wet arc welding or additive manufacturing apparatus as claimed in any one of claims 1 to 9, comprising the steps of:
(1) Connecting and debugging the composite welding torch, the MIG welding machine, the wire feeder, the welding robot and the pressurizing system;
(2) The flux-cored wire in the wire feeder is led into the composite welding torch, the pressurizing system is started to introduce high-pressure water flow into the composite welding torch, the composite welding torch is placed above a part to be repaired under the auxiliary action of the welding robot, and the surface of a substrate to be repaired is cleaned along the repairing path;
(3) Adjusting welding or material adding repairing parameters and water flow pressure according to operation conditions, guiding a flux-cored wire to exceed the bottom end of the conducting nozzle, and starting the MIG welder after keeping the elongation of 16mm, and performing welding or material adding operation along a set path;
(4) And after the operation is finished, the MIG welding machine is closed, and the composite welding torch continues to move until the composite welding torch completely exceeds an operation area, and then the pressurizing system is closed, so that the operation is finished.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117181692A (en) * | 2023-11-02 | 2023-12-08 | 泉州市锦溪九号光伏农业科技有限公司 | Park view surface dirt processing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117181692A (en) * | 2023-11-02 | 2023-12-08 | 泉州市锦溪九号光伏农业科技有限公司 | Park view surface dirt processing apparatus |
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