Portable filament submerged arc welding device
Through the portable wire submerged arc welding device, water-cooled wire welding gun and wire feeding device, the problem of quality defects in the weld roots in the double-sided submerged arc welding process is solved, the production efficiency and welding quality are improved, and the efficient welding process is achieved. .
Patent Information
- Application Number
- CN202420196239.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-26
AI Technical Summary
In the double-sided submerged arc welding process of the longitudinal ring joint of the pressure vessel, mass defects such as slag inclusion and pores often appear at the roots of the weld, and the production efficiency is low.
A portable wire submerged arc welding device was designed, including a water-cooled wire welding gun and a water-cooled power supply device. It provides cooling and power through a water-cooled system. Combined with a wire feeding device and a direction adjustment device, it uses 1.2mm fine welding wire for welding to avoid cleaning. Root and grinding process improves weld quality and production efficiency.
High-quality welding of the weld roots is achieved, the incidence of mass defects is reduced, the production efficiency is improved, and the overheating and vibration effects during the welding process are avoided through the water-cooling system.
Smart Images
Figure CN222268973U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure vessel and boiler manufacturing, in particular to a portable fine-wire submerged arc welding device. Background Art
[0002] Submerged arc welding is a welding method in which the arc burns under the flux layer. Its inherent advantages of stable welding quality, high welding productivity, no arc light and little smoke make it the main welding method in the production of important steel structures such as pressure vessels, pipe section manufacturing, box beams and columns.
[0003] Submerged arc welding is often used for longitudinal circumferential seams of pressure vessels. Due to the large heat input of submerged arc welding, other pre-process solutions are often required when welding the welds using submerged arc welding. For example, one is to add a gasket at the weld position, remove the gasket and part of the weld from the back after welding, and then weld again to fill the cladding metal; the second is to process a specific groove form, first use argon arc welding to prime the root of the weld, then use manual welding to increase the weld height, and finally use submerged arc welding to fill the weld. These process solutions are designed to ensure the quality of the weld, but to a certain extent limit production efficiency. When using traditional equipment to adopt the process of double-sided submerged arc welding, quality defects such as slag inclusions and pores will appear at the root of the weld. Utility Model Content
[0004] In order to solve the above technical problems, the utility model designs a portable fine-wire submerged arc welding device to solve the high incidence of quality defects such as slag inclusion and porosity at the root of the weld in the double-sided submerged arc welding process and to improve production efficiency.
[0005] The utility model adopts the following technical solutions:
[0006] A portable fine-wire submerged arc welding device comprises a welding device body and a driving wheel group installed at the bottom of the welding device body, wherein a wire feeding device, a water-cooled fine-wire welding gun and a water-cooled power supply device are installed on the welding device body;
[0007] Water-cooled power supply device, providing cooling water and power supply for the entire device;
[0008] A water-cooled fine-wire welding gun is connected to a water-cooled power supply device through a water-electric pipe, is water-cooled by circulating cooling water provided by the water-cooled power supply device, and performs welding by power provided by the water-cooled power supply device;
[0009] The wire feeding device is connected to the water-cooled fine-wire welding gun through a wire feeding tube to provide welding wire for the water-cooled fine-wire welding gun.
[0010] Preferably, a direction adjustment device is installed between the welding device body and the water-cooled fine-wire welding gun, and the direction adjustment device is used to adjust the welding angle and position of the water-cooled fine-wire welding gun.
[0011] Preferably, a water-cooled chassis is installed at the lower part of the welding device body, the driving wheel set is fixed to the bottom of the water-cooled chassis, the water-cooled chassis is connected to the water-cooled power supply device through a water-electric pipe, and is water-cooled by the cooling water circulation provided by the water-cooled power supply device.
[0012] Preferably, the direction adjustment device includes an adjustment track, a Y-axis position adjuster, a Y-axis position fine-tuner, a Z-axis position fine-tuner, an X-axis angle adjuster, a Y-axis angle adjuster and a clamp. The Y-axis position adjuster is fixed on one side of the water-cooled chassis, and the adjustment track passes through the center of the Y-axis position adjuster. The Y-axis position fine-tuner, the Z-axis position fine-tuner, the X-axis angle adjuster and the Y-axis angle adjuster are a whole and are installed on the adjustment track. The water-cooled fine-wire welding gun is fixed to the Y-axis angle adjuster through a clamp.
[0013] Preferably, the water-cooled fine-wire welding gun includes a gun barrel and a conductive nozzle installed at the bottom end of the gun barrel, a center tube is arranged on the gun barrel, the center tube is used to connect the wire feeding tube, a center hole is arranged in the center tube and the conductive nozzle, the center tube and the center hole in the conductive nozzle are connected, and are used for the welding wire fed through the wire feeding tube, a water-cooling chamber is arranged in the gun barrel, a cooling water inlet pipe and a cooling water outlet pipe are connected in the water-cooling chamber, and the cooling water inlet pipe and the cooling water outlet pipe are respectively connected to the water-cooled power supply device through water and electricity pipes.
[0014] Preferably, a protective shell is threadedly mounted on the gun barrel, an upper sealing plate is sleeved on the central tube, the cooling water inlet pipe and the cooling water outlet pipe, and the protective shell covers the outside of the central tube, the cooling water inlet pipe and the cooling water outlet pipe.
[0015] Preferably, the conductive nozzle is installed at the bottom end of the gun barrel through a thread.
[0016] Preferably, the water and electricity pipe is connected to a Y-shaped tee pipe, and the water and electricity pipe from the water-cooled power supply device is divided into two paths through the Y-shaped tee pipe, one path is connected to the water-cooled fine-wire welding gun, and the other path is connected to the water-cooled chassis through a high-temperature resistant hose.
[0017] Preferably, a welding wire reel fixing frame is installed on the welding device body, and the welding wire output from the welding wire reel fixing frame is connected to the wire feeding device through a wire feeding tube.
[0018] Preferably, the wire feeding tube comprises a metal spring tube and a non-metallic hose, wherein the non-metallic hose is coated on the outside of the metal spring tube, and the inside of the metal spring tube is used for passing the welding wire.
[0019] The beneficial effects of the utility model are as follows: (1) the utility model adopts a water-cooled fine-wire welding gun using a 1.2 mm fine submerged arc welding wire to weld the back of a groove with a blunt edge of 6 mm. The process from the formation to the expansion of the molten pool is relatively smooth, and the existence time of the molten pool is relatively long, which can promote the discharge of gas and impurities existing at the root of the weld. Then, the conventional submerged arc welding method can be directly adopted on the front side, avoiding the processes of root cleaning and grinding, thereby improving the weld quality and production efficiency; (2) the welding current of the fine-wire submerged arc welding device is basically the same as the conventional submerged arc welding current, but compared with the conventional submerged arc gun with a diameter of 3-4 mm and a large-size gun barrel for passive heat dissipation, the water-cooled fine-wire welding gun of the device can avoid overheating of the fine welding wire under high current, thereby ensuring the continuity of the welding process; (3) the water-cooled chassis can reduce the influence of heat radiation generated during welding on the welding device body, avoid overheating of the device, and facilitate continuous production operations. At the same time, the distance between the device and the workpiece can be reduced, and a shorter gun barrel can be adopted, thereby reducing the influence of vibration generated during the movement of the device on the molten pool. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the utility model;
[0021] Figure 2 It is a schematic diagram of the structure of the water-cooled fine-wire welding gun in the utility model;
[0022] Figure 3 This is a schematic diagram of a welding groove application of the utility model;
[0023] Figure 4 This is a structural diagram of the water and electricity pipe in the utility model.
[0024] Figure 5 This is a structural schematic diagram of the wire feeding tube in the utility model.
[0025] In the figure: 1. welding device body, 2. driving wheel group, 3. direction adjustment device, 4. water-cooled fine wire welding gun, 5. water-cooled chassis, 6. water-cooled power supply device, 7. water and electricity pipe, 8. wire feeding tube, 101. welding wire reel fixing frame, 102. wire feeding device, 103. counterweight, 301. adjustment track, 302. Y-axis position adjuster, 303. Y-axis position fine adjuster, 304. Z-axis position fine adjuster, 305. X-axis angle adjuster, 306. Y-axis angle adjuster, 307. clamp, 401. conductive nozzle, 402. gun rod, 403. center tube, 404. cooling water inlet pipe, 405. cooling water outlet pipe, 406. upper sealing plate, 407. protective shell, 701. Y-type three-way pipe, 702. high temperature resistant hose, 801. metal spring tube, 802. non-metallic hose, 803. welding wire.
[0026] A. Back weld, B. Front weld, C. Weld overlap area, D. Water-cooling chamber. DETAILED DESCRIPTION
[0027] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:
[0028] Example: Figure 1 As shown, a portable fine-wire submerged arc welding device includes a welding device body 1, a driving wheel group 2, a direction adjustment device 3, a water-cooled fine-wire welding gun 4, a water-cooled chassis 5, a water-cooled power supply device 6, a wire feeding tube 8, and a water and electricity pipe 7.
[0029] By adopting the above technical solution, such as Figure 5 As shown, the wire feeding tube 8 uses a metal spring tube 801 with an outer diameter of 4.5mm and an inner diameter of 2mm. The outer surface of the metal spring tube is connected with a non-metallic hose 802. The non-metallic hose uses a PVC hose with a specification of 5x9mm. The welding wire 803 can pass through the center of the metal spring tube 801, and the two ends are respectively connected to the wire feeding device 102 and the center tube 403 of the water-cooled fine wire welding gun 4 through connectors. A welding wire reel fixing frame 101 is installed on the welding device body 1, and the welding wire output from the welding wire reel fixing frame 101 is connected to the wire feeding device 102 through the wire feeding tube 8.
[0030] By adopting the above technical solution, such as Figure 4 As shown, the water and electricity pipe 7 is connected to both ends of the Y-shaped three-way pipe 701 straight pipe, the water and electricity pipe 7 is connected to the water-cooled fine wire welding gun 4 and the water-cooled power supply device 6, and the high-temperature resistant hose 702 is connected to the Y-shaped three-way pipe 701 and the water-cooled chassis 5.
[0031] By adopting the above technical scheme, a water-cooled chassis 5 is installed at the lower part of the welding device body 1, the driving wheel group 2 is fixed at the bottom of the water-cooled chassis 5, the counterweight 103 and the wire reel fixing frame 101 are respectively installed at the front and rear positions of the welding device body 1, and the wire feeding device 102 is installed on the side of the welding device body 1, and the position is slightly higher than the installation position of the water-cooled fine wire welding gun 4. When in use, the welding wire is installed on the wire reel, and the wire reel is installed on the wire reel fixing frame 101. The welding wire passes through the inside of the wire feeding tube 8, and the wire feeding device 102 provides power to feed the welding wire into the water-cooled fine wire welding gun 4. The driving wheel group 2 and the wire feeding device 102 are uniformly controlled by the controller in the welding device body 1, and the corresponding parameters are controlled and set through the control panel on the controller.
[0032] By adopting the above technical solution, the Y-axis position regulator 302 is fixed at one end of the water-cooled chassis 5, the adjustment track 301 passes through the center of the Y-axis position regulator 302, the Y-axis position fine-tuner 303, the Z-axis position fine-tuner 304, the X-axis angle regulator 305, and the Y-axis angle regulator 306 are a whole, installed on the adjustment track 301, and the water-cooled fine-wire welding gun 4 is fixed to the end of the direction adjustment device 3 through the clamp 307. The adjustment track 301 can be controlled to move in a large range along the Y-axis direction by rotating the knob on the Y-axis rotation position regulator 302, a small range of adjustment in the Y-axis direction can be achieved by rotating the knob on the Y-axis position fine-tuner 303, a small range of adjustment in the Z-axis direction can be achieved by rotating the knob on the Z-axis fine-tuner, the angle adjustment around the X-axis direction can be achieved by rotating the X-axis angle regulator 305, and the angle adjustment around the Y-axis direction can be achieved by rotating the Y-axis angle regulator 306.
[0033] By adopting the above technical solution, the water-cooled power supply device 6 provides cooling water and power supply for the entire device. The water-cooled power supply device 6 is controlled by the controller in the welding device body 1. The cooling water flowing out of the water-cooled power supply device 6 is divided into two paths through the Y-shaped three-way pipe 701, one of which is connected to the water-cooled fine-wire welding gun 4 through the water and electricity pipe 7, and the other is connected to the water-cooled chassis 5 through the high-temperature resistant hose 702. After circulation, the high-temperature circulating water is merged through the Y-shaped three-way pipe 701 and flows back to the water-cooled power supply device 6.
[0034] By adopting the above technical solution, such as Figure 2 As shown, the water-cooled fine-wire welding gun 4 is composed of a conductive tip 401, a gun rod 402, a cooling water inlet pipe 404, a cooling water outlet pipe 405, an upper sealing plate 406, and a protective shell 407. The central tube 403 and the gun rod 402 are integrally formed, and the upper sealing plate 406 is connected to the gun rod 402, the cooling water inlet pipe 404, and the cooling water outlet pipe 405 by welding. The closed water-cooling chamber D formed is only connected to the outside through the cooling water inlet pipe 404 and the cooling water outlet pipe 405. The conductive tip 4 01 is fixed to the gun rod 402 by means of threads, the center holes of the center tube 403 and the conductive tip 401 are kept concentric, the protective shell 407 is firstly put on the tube bundle composed of the water and electricity tube 7 and the wire feeding tube 8 during installation, and after the connection with the cooling water inlet pipe 404, the cooling water outlet pipe 405 and the center tube 403 is completed respectively, the protective shell 407 is installed on the gun rod 402 by means of threads, and then the water-cooled fine wire welding gun 4 is fixed to the end of the direction adjustment device 3 by means of the clamp 307, and the installation position is adjusted as needed during installation. During operation, cooling water fills the water-cooling chamber D from the cooling water inlet pipe 404, high-temperature water flows out from the cooling water outlet pipe 405, the welding wire enters from the upper part of the center tube 403, and extends from the lower end of the conductive tip 401.
[0035] The working principle of the utility model is:
[0036] like Figure 3 As shown, when in use, the weld A position on the back of the workpiece to be welded is placed upward, and the blunt edge of the groove meets the requirement of 6mm thickness. The surface to be welded and the surrounding 25mm range should be cleaned by mechanical grinding until the metallic luster is exposed. The device is placed on the surface of the workpiece, and the water-cooled power supply device 6 is placed on the edge of the workpiece or at a designated location. A Y-shaped three-way pipe 701 is installed at the cooling water outlet and the return water outlet, and the water and electricity pipe 7 is connected to the water-cooled fine wire welding gun 4. The high-temperature resistant hose 702 is connected to the water-cooled chassis 5, and the power of the water-cooled power supply device 6 is turned on. The center of the water-cooled chassis 5 is adjusted to be parallel to the weld. The position of the driving wheel group 2 should avoid the weld position. It is more ideal that the wheels are located on both sides of the weld and keep a distance of more than 50mm from the weld. The adjustment track 301 is installed on the Y-axis position adjuster 302, and the direction adjustment device 3 is adjusted to the approximately required position by rotating the knob of the Y-axis position adjuster 302.
[0037] The required welding wire is installed on the welding wire reel fixing frame 101, and the welding wire reel fixing frame 101 is manually rotated to release a sufficiently long welding wire, and then the welding wire is manually inserted into the wire feeding tube 8 until the welding wire enters the wire feeding device 102, and then the wire feeding device 102 is manually controlled by the welding device body 1 to feed the wire, and the welding wire enters the wire feeding tube 8, passes through the water-cooled fine wire welding gun 4, and extends from the conductive nozzle 401, and extends the welding wire to the root position of the weld, and manually rotates the Y-axis position fine adjuster 303, the Z-axis position fine adjuster 304, the X-axis angle adjuster 305 and the Y-axis angle adjuster 306. , respectively adjust the Y-axis and Z-axis positions and the X-axis and Z-axis angles of the water-cooled fine-wire welding gun 4, adjust the position of the conductive tip 401 to a position about 15 mm away from the workpiece surface and perpendicular to the workpiece, use pliers to cut off excess welding wire after adjustment, continue to manually feed the wire until the welding wire contacts the workpiece, start the water-cooling cycle of the water-cooled power supply device through the welding device body 1, fill the weld with flux, start welding through the welding device body 1, and perform one or more passes of welding on the back weld A of the area to be welded according to the size of the groove. After completing the filling of the back weld A, clean the front weld B of the area to be welded mechanically, and directly use other welding methods, such as submerged arc welding with a welding wire of φ3.2 / 4.0, to weld the front weld B. The back weld A and the front weld B will form a weld overlapping area C, thereby forming a final full penetration weld.
[0038] A complete set of equipment also includes welding machine pipeline system, electric control system, pneumatic system, etc.
[0039] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.
Claims
1. A portable fine-wire submerged arc welding device, comprising a welding device body and a driving wheel set installed at the bottom of the welding device body, characterized in that: The welding device body is equipped with a wire feeding device, a water-cooled fine wire welding gun and a water-cooled power supply device; Water-cooled power supply device, providing cooling water and power supply for the entire device; A water-cooled fine-wire welding gun is connected to a water-cooled power supply device through a water-electric pipe, is water-cooled by circulating cooling water provided by the water-cooled power supply device, and performs welding by power provided by the water-cooled power supply device; The wire feeding device is connected to the water-cooled fine-wire welding gun through a wire feeding tube to provide welding wire for the water-cooled fine-wire welding gun.
2. A portable fine-wire submerged arc welding device according to claim 1, characterized in that: A direction adjustment device is installed between the welding device body and the water-cooled fine-wire welding gun, and the direction adjustment device is used to adjust the welding angle and position of the water-cooled fine-wire welding gun.
3. A portable fine-wire submerged arc welding device according to claim 2, characterized in that: A water-cooled chassis is installed at the lower part of the welding device body, and the driving wheel group is fixed at the bottom of the water-cooled chassis. The water-cooled chassis is connected to the water-cooled power supply device through a water-electric pipe and is water-cooled by the cooling water circulation provided by the water-cooled power supply device.
4. A portable fine-wire submerged arc welding device according to claim 3, characterized in that: The direction adjustment device comprises an adjustment track, a Y-axis position adjuster, a Y-axis position fine-tuner, a Z-axis position fine-tuner, an X-axis angle adjuster, a Y-axis angle adjuster and a clamp. The Y-axis position adjuster is fixed on one side of a water-cooled chassis, the adjustment track passes through the center of the Y-axis position adjuster, the Y-axis position fine-tuner, the Z-axis position fine-tuner, the X-axis angle adjuster and the Y-axis angle adjuster are a whole and are installed on the adjustment track, and the water-cooled fine-wire welding gun is fixed on the Y-axis angle adjuster through a clamp.
5. A portable fine-wire submerged arc welding device according to claim 1, characterized in that: The water-cooled fine-wire welding gun includes a gun barrel and a conductive nozzle installed at the bottom end of the gun barrel. A center tube is arranged on the gun barrel, and the center tube is used to connect the wire feeding tube. A center hole is arranged in the center tube and the conductive nozzle. The center tube and the center hole in the conductive nozzle are connected, and are used for the welding wire fed through the wire feeding tube. A water-cooling chamber is arranged in the gun barrel, and a cooling water inlet pipe and a cooling water outlet pipe are connected in the water-cooling chamber. The cooling water inlet pipe and the cooling water outlet pipe are connected to a water-cooled power supply device through water and electricity pipes respectively.
6. A portable fine-wire submerged arc welding device according to claim 5, characterized in that: A protective shell is threadedly mounted on the gun rod, an upper sealing plate is sleeved on the central tube, the cooling water inlet pipe and the cooling water outlet pipe, and the protective shell covers the central tube, the cooling water inlet pipe and the cooling water outlet pipe.
7. A portable fine-wire submerged arc welding device according to claim 5, characterized in that: The conductive nozzle is installed at the bottom end of the gun rod through threads.
8. A portable fine-wire submerged arc welding device according to claim 3, characterized in that: The water and electricity pipe is connected to a Y-shaped three-way pipe, and the water and electricity pipe connected to the water-cooled power supply device is divided into two paths through the Y-shaped three-way pipe, one path is connected to the water-cooled fine-wire welding gun, and the other path is connected to the water-cooled chassis through a high-temperature resistant hose.
9. A portable fine-wire submerged arc welding device according to claim 1, characterized in that: A welding wire reel fixing frame is installed on the welding device body, and the welding wire output from the welding wire reel fixing frame is connected to the wire feeding device through a wire feeding tube.
10. A portable fine-wire submerged arc welding device according to claim 9, characterized in that: The wire feeding tube comprises a metal spring tube and a non-metal hose, wherein the non-metal hose is coated on the outside of the metal spring tube, and the inside of the metal spring tube is used for passing the welding wire.