CN214079767U - Laser-electric arc hybrid welding synchronous ultrasonic stress relief device - Google Patents
Laser-electric arc hybrid welding synchronous ultrasonic stress relief device Download PDFInfo
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- CN214079767U CN214079767U CN202022785407.3U CN202022785407U CN214079767U CN 214079767 U CN214079767 U CN 214079767U CN 202022785407 U CN202022785407 U CN 202022785407U CN 214079767 U CN214079767 U CN 214079767U
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Abstract
The utility model discloses a synchronous supersound destressing device of laser-electric arc hybrid welding, including base A, be provided with laser welder head and electric arc welder on the base A, base A keeps away from one side of laser welder head and is provided with the base B that can reciprocate, and base B bottom is provided with the ultrasonic impact head, and the ultrasonic impact head is connected with supersonic generator, and base B passes through linear guide pair with the ultrasonic impact head to be connected, and the bottom tip of laser welder head, electric arc welder and ultrasonic impact head is located same water flat line. Adopt the utility model discloses the device can make electric arc welder, laser welder head and supersound strike head synchronous motion, and laser-electric arc welding is in the front, and the supersound strikes the back, reaches preceding execution and welds, and synchronous supersound strikes the effect that destressing is reinforceed behind, can effectively get rid of thick plate welding and multilayer filling and weld residual stress.
Description
Technical Field
The utility model belongs to the technical field of the welding, a synchronous supersound destressing device of laser-electric arc hybrid welding is related to.
Background
In the welding process of the high-strength steel thick plate, due to high welding crack sensitivity, welding seam cracking caused by residual stress is easy to generate, and the structure fails. Generally, the residual compressive stress exists in the welded workpiece, which is beneficial to improving the bonding strength and fatigue strength of the workpiece, while the residual tensile stress exists, which is easy to generate cracks and welding defects, so that the residual tensile stress needs to be eliminated from the workpiece through various processes and methods. The residual stress relief can be performed from several points: residual stress is prevented through structural design; adopting a corresponding welding process to regulate and control the generation and development of residues; and reducing or eliminating residual stress by adopting a mechanical force and heat treatment method after welding. The residual stress is prevented by the structural design and is often limited by the system structure and the use requirements, the effect of improving the internal stress is limited, and the welding process cannot effectively avoid the generation of the tensile stress of the welding seam due to the influence of various factors such as welding materials, a welding method, site construction conditions, a welding process and the like. After the ultrasonic impact after welding is adopted, the surface of the welding seam is subjected to high-frequency vibration and impact stress, so that the stress in a region with a higher stress field is released, and the residual stress in a weldment can be effectively reduced. Meanwhile, the mechanical force can also reduce the sharpness of the notch of the welding toe area, thereby reducing stress concentration, even possibly generating compressive stress on the metal surface and greatly improving the fatigue strength of the welding joint.
At present, the method for removing weld stress of a T-shaped structural welding part of a high-strength thick steel plate is to manually hold an impact gun after welding for ultrasonic stress-relief impact. For thick plate T-shaped structural joints, a multi-channel multi-layer welding mode is generally adopted for welding, if a post-welding manual ultrasonic impact method is adopted for carrying out stress-relief deformation strengthening on each layer of cladding metal, the welding efficiency can be greatly reduced, and the manual handheld impact gun is difficult to ensure the constant of continuous overlapping, moving speed and pressure of an impact position, so that the continuous long-weld joint stress-relief effect and deformation are unstable, the stability of subsequent fusion welding process conditions can be influenced, and the quality of the welded joint can be difficult to ensure. The existing synchronous ultrasonic impact device is only applied to small-sized laboratory tests, has extremely high requirements on the surface quality of a welded plate, is only suitable for welding a single-layer small welding line of a thin plate, and is not suitable for thick plate welding and multilayer filling welding with slightly poor surface state, and the vibration generated by an ultrasonic impact gun can influence the stability of electric arc welding and laser welding.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a synchronous supersound destressing device of laser-electric arc hybrid welding has solved current synchronous supersound and has strikeed the device and can not get rid of thick plate welding and multilayer and fill the problem of welding residual stress.
The utility model provides a technical scheme who adopts is, a synchronous supersound destressing device of laser-electric arc hybrid welding, including base A, be provided with laser welder head and electric arc welder on the base A, base A keeps away from one side of laser welder head and is provided with the base B that can reciprocate, and base B bottom is provided with the ultrasonic impact head, and the ultrasonic impact head is connected with supersonic generator, and base B passes through linear guide pair with the ultrasonic impact head to be connected, and the bottom tip of laser welder head, electric arc welder and ultrasonic impact head is located same water flat line.
The utility model is also characterized in that,
the ultrasonic impact head comprises a pressure adjusting bin and an impact head bin body which are sequentially connected from top to bottom, an energy converter connected with an ultrasonic generator is arranged in the impact head bin body, and an impact needle capable of moving up and down is arranged at the bottom of the impact head bin body.
The pressure adjusting bin comprises a top cover, a spring and a barrel body, the top cover is fixedly connected with the barrel body through a screw, and the spring is arranged inside the barrel body.
The impact pin is a T-shaped pin, the top of the impact pin is positioned in the impact head bin body, the bottom of the impact pin is positioned outside the impact head bin body, and the bottom surface of the energy converter is attached to the top surface of the impact pin.
The impact head bin body comprises a circular top plate, a cylinder and a hollow prismatic table which are sequentially and fixedly connected from top to bottom, the top plate is clamped inside the bin body, the hollow prismatic table is communicated with the inside of the cylinder, and the bottom surface of the hollow prismatic table is provided with a through hole which can enable the bottom of the impact needle to penetrate through.
The locating slot has been seted up on the barrel inner wall, and the roof outside is provided with the protrusion end, and the protrusion end embedding is inside the locating slot.
The base A is connected with the base B through a linear ball screw.
The linear ball screw comprises a screw guide rail and a sliding table which are matched with each other, the sliding table is in threaded connection with the screw guide rail, the screw guide rail is vertically arranged on the side face of the base A, and the sliding table is fixedly connected with the side face of the base B through a screw.
The bottom of the base B is provided with a braking device, the braking device comprises a sliding block sleeved on the lead screw guide rail, a horizontal thread through hole is formed in the side face of the sliding block, and a screw is arranged in the thread through hole.
The included angle between the laser welding head and the vertical direction is 0-10 degrees.
The beneficial effects of the utility model are that, through setting up laser welder head and electric arc welder on base A, base A is far away from one side of laser welder head and is provided with base B that can reciprocate, set up the ultrasonic impact head in base B bottom, ultrasonic impact head connects supersonic generator, base B passes through linear guide pair with the ultrasonic impact head and is connected, the bottom tip of laser welder head, electric arc welder and ultrasonic impact head is located same water flat line, adopt this device can make electric arc welder, laser welder head and ultrasonic impact head synchronous motion, laser-electric arc welding is preceding, ultrasonic impact is after, reach preceding welding, the effect that the synchronous ultrasonic impact destressing of back reinforces, can effectively get rid of thick plate welding and multilayer filling and weld residual stress; the sliding table can be driven to move up and down by rotating the lead screw guide rail, so that the base B5 and the ultrasonic impact head 6 are driven to move up and down, the distance between the ultrasonic impact head and the welding workpiece 8 is adjusted, and the positive pressure of the ultrasonic impact head in metal contact with a welding seam is adjusted; the distance between the impact head and the molten pool can be accurately adjusted through the linear guide rail pair, the temperature of ultrasonic impact spot welding metal is matched, and a better impact effect is achieved.
Drawings
FIG. 1 is a schematic structural diagram of a laser-arc hybrid welding synchronous ultrasonic stress relief device according to the present invention;
fig. 2 is a schematic structural diagram of an ultrasonic impact head in the laser-arc hybrid welding synchronous ultrasonic stress relief device of the present invention.
In the figure, 1, a base A, 2, a laser welding head, 3, an arc welding gun, 4, a linear ball screw, 5, a base B, 6, an ultrasonic impact head, 7, an ultrasonic generator, 8, a welding workpiece, 9, a protruding end, 10, a pressure adjusting bin, 11, a spring, 12, a positioning groove, 13, an impact head bin body, 14, a transducer, 15, an impact needle, 16, a top cover, 17, a barrel body, 18, a top plate, 19, a cylinder, 20, a hollow prismatic table, 21, a sliding table, 22, a braking device and 23 are screws.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a synchronous supersound destressing device of laser-electric arc hybrid welding, refer to fig. 1, including base A1, base A1 is the manipulator, be fixed with laser welder head 2 and electric arc welder 3 on the base A1, laser welder head 2 is 5 with the contained angle of vertical direction, base A1 keeps away from one side of laser welder head 2 and is provided with base B5 that can reciprocate, base B5 bottom is provided with ultrasonic impact head 6, ultrasonic impact head 6 is connected with supersonic generator 7, base B5 is connected through the linear guide pair with ultrasonic impact head 6, can adjust the distance of ultrasonic impact head 6 apart from the welding molten bath. The laser port of the laser welding head 2, the gun port of the arc welding gun 3 and the bottom end of the ultrasonic impact head 6 are positioned on the same horizontal line.
The linear guide rail pair comprises a linear guide rail and a sliding block which are matched, the sliding block is sleeved on the linear guide rail and can horizontally slide left and right along the linear guide rail, the linear guide rail is fixed on the bottom surface of the base B5, and the sliding block is connected with the top of the ultrasonic impact head 6 through a screw and can drive the ultrasonic impact head 6 to horizontally slide left and right along the linear guide rail.
Base A1 is connected through sharp ball 4 with base B5, and sharp ball 4 includes screw guide rail and slip table 21 of mutually supporting, and slip table 21 cover is established on the screw guide rail, and slip table and screw guide rail threaded connection, the vertical setting of screw guide rail are on base A1 side, and the slip table passes through screw and base B5 side fixed connection.
The two sides of the screw guide rail are respectively provided with a slide rail, the central shaft axes of the slide rails on the two sides and the central shaft axis of the screw guide rail are positioned in the same vertical plane, and the sliding table is connected with the slide rails in a sliding manner, so that the stability of the base A1 and the ultrasonic impact head 6 during up-and-down movement is ensured.
The bottom of the base B5 is provided with a braking device 22, the braking device 22 comprises a sliding block sleeved on the lead screw guide rail, the side surface of the sliding block is provided with a horizontal thread through hole, a screw 23 is arranged in the thread through hole, when the sliding table needs to be locked, the screw 23 moves to the left, the end part of the screw 23 is propped in the thread of the lead screw guide rail, the sliding table is prevented from moving downwards, and the sliding table is prevented from moving downwards due to the base A1, the ultrasonic impact head 6 and the self gravity.
The sliding table can be driven to move up and down by rotating the lead screw guide rail, so that the base B5 and the ultrasonic impact head 6 are driven to move up and down, the distance between the ultrasonic impact head and the welding workpiece 8 is adjusted, and the positive pressure of the ultrasonic impact head in metal contact with a welding seam is adjusted.
When the bottom of the impact pin is just contacted with the weld metal, the pressure of the bottom of the impact pin and the weld metal is zero, the base A1 is continuously adjusted downwards, the spring 11 is compressed, the contact pressure of the impact pin 15 and the weld metal is increased, and the pressure is adjusted to a proper value (20N-50N).
Referring to fig. 2, the ultrasonic impact head 6 comprises a pressure adjusting bin 10 and an impact head bin body 13 which are sequentially connected from top to bottom, a transducer 14 connected with an ultrasonic generator 7 is arranged in the impact head bin body 13, an impact pin 15 capable of moving up and down is arranged at the bottom of the impact head bin body, and the ultrasonic generator 7 is connected with the transducer 14 through a conductive sliding ring.
Before welding, the number and arrangement of the impact pins, such as a single pin, a single row of multiple pins, an array, etc., are selected according to the width and shape of the weld, and in this embodiment, the number of the impact pins 15 is 3.
The pressure adjusting bin 10 comprises a top cover 16, a spring 11 and a barrel 17, the top cover 16 is fixedly connected with the barrel 17 through screws, and the spring 11 is arranged inside the barrel 17. The spring 11 can play the effect of bradyseism, has reduced the influence of the vibration that the ultrasonic impact device during operation produced to welding gun and laser head stability, makes welding process more stable.
The impact pin 15 is a T-shaped pin, the top of the impact pin 15 is positioned inside the impact head bin body 13, the bottom of the impact pin 15 is positioned outside the impact head bin body 13, and the bottom surface of the energy converter 14 is attached to the top surface of the impact pin 15.
The impact head bin body 13 comprises a circular top plate 18, a cylinder 19 and an inverted hollow prismatic table 20 which are sequentially and fixedly connected from top to bottom, the top plate 18 is clamped inside the bin body 17, the hollow prismatic table 20 is communicated with the inside of the cylinder 19, and the bottom surface of the hollow prismatic table 20 is provided with a through hole which can enable the bottom of the impact pin 15 to penetrate through.
Four positioning grooves 12 are uniformly formed in the inner wall of the barrel body 17, a protruding end 9 is arranged on the outer side of the top plate 18, and the protruding end 9 is embedded into the positioning grooves 12, so that the impact head bin body 13 and the pressure adjusting bin 10 are prevented from rotating relatively.
Use the utility model discloses during the synchronous supersound destressing device of laser-electric arc hybrid welding, at first set for laser, arc welding process parameter and automatic weld procedure, adjust supersound impact frequency, power, normal pressure and impact head apart from the weld bath distance, then open the automatic weld procedure, whole synchronous supersound destressing device system with electric arc welder and laser welder head synchronous motion under the drive of manipulator, laser-arc welding is in the front, the ultrasonic impact is in the back, reach the preceding and execute welding, the effect that synchronous ultrasonic impact destressing is reinforceed behind. When the stable welding of the thick plate is ensured, each layer of cladding layer is synchronously subjected to ultrasonic impact destressing, the internal stress of weld cladding metal can be effectively removed, and the problems of complex multi-layer and multi-pass welding seam destressing and deformation strengthening process and low efficiency of the high-strength steel thick plate are solved.
When the synchronous ultrasonic impact works, the impact pin 15 is required to be in contact with weld metal, certain vertical pressure is applied, the ultrasonic generator converts alternating current into a high-frequency electric oscillation signal and transmits the high-frequency electric oscillation signal to the transducer 14 through the conductive slip ring, the transducer 14 converts the high-frequency electric oscillation signal into axial high-frequency vibration to push the impact pin 15 of the ultrasonic impact head to vibrate, and the impact pin acts on the metal surface to generate high-frequency ultrasonic impact force so as to achieve the effect of removing welding stress.
The utility model discloses the temperature that ultrasonic impact head 6 matches ultrasonic impact spot welding metal is removed to the synchronous supersound destressing device accessible about laser-electric arc hybrid welding, and ultrasonic impact head is more near apart from the welding molten bath, and the molten bath receives vibration and draws and press alternative stress effect bigger, can break the process of growing up of metal solidification in-process crystalline grain, increases crystallization nucleation, makes the crystalline grain refine, and intensity improves, so ultrasonic impact should be close to the welding molten bath, and the temperature should be some more. For stress relief, tensile stress is generated in the process from hot to cold of metal, the impact temperature is too high, and the weld metal with higher temperature after impact can continuously generate tensile stress in the cooling process, so that the stress relief effect is greatly reduced, and the impact temperature is lower. Tests show that for low-carbon steel and low-alloy steel, the impact temperature is lower than 400 ℃ to obtain better impact effect, so that the impact temperature is set to 200 ℃ and 400 ℃, and the best impact effect can be achieved.
Claims (10)
1. The utility model provides a synchronous supersound destressing device of laser-electric arc hybrid welding, a serial communication port, including base A (1), be provided with laser welder head (2) and electric arc welder (3) on base A (1), base A (1) is kept away from one side of laser welder head (2) and is provided with base B (5) that can reciprocate, base B (5) bottom is provided with ultrasonic impact head (6), ultrasonic impact head (6) are connected with supersonic generator (7), base B (5) and ultrasonic impact head (6) pass through linear guide pair and are connected, the bottom tip of laser welder head (2), electric arc welder (3) and ultrasonic impact head (6) is located same horizontal line.
2. The laser-arc hybrid welding synchronous ultrasonic stress relief device according to claim 1, wherein the ultrasonic impact head (6) comprises a pressure regulation bin (10) and an impact head bin body (13) which are sequentially connected from top to bottom, a transducer (14) connected with the ultrasonic generator (7) is arranged inside the impact head bin body (13), and an impact pin (15) capable of moving up and down is arranged at the bottom of the impact head bin body.
3. The laser-arc hybrid welding synchronous ultrasonic stress relief device according to claim 2, wherein the pressure regulation cabin (10) comprises a top cover (16), a spring (11) and a cylinder (17), the top cover (16) is fixedly connected with the cylinder (17) through a screw, and the spring (11) is arranged inside the cylinder (17).
4. The laser-arc hybrid welding synchronous ultrasonic stress relief device according to claim 3, wherein the impact pin (15) is a T-shaped pin, the top of the impact pin (15) is located inside the impact head bin body (13), the bottom of the impact pin (15) is located outside the impact head bin body (13), and the bottom surface of the transducer (14) is attached to the top surface of the impact pin (15).
5. The laser-arc hybrid welding synchronous ultrasonic stress relief device according to claim 4, wherein the impact head bin body (13) comprises a circular top plate (18), a cylinder (19) and a hollow prismatic table (20) which are fixedly connected from top to bottom in sequence, the periphery of the top plate (18) is clamped inside the cylinder (17), the hollow prismatic table (20) is communicated with the inside of the cylinder (19), and a through hole through which the bottom of the impact pin (15) can pass is formed in the bottom surface of the hollow prismatic table (20).
6. The laser-arc hybrid welding synchronous ultrasonic stress relief device as claimed in claim 5, wherein a positioning groove (12) is formed in the inner wall of the cylinder (17), a protruding end (9) is arranged on the outer side of the top plate (18), and the protruding end (9) is embedded in the positioning groove (12).
7. The laser-arc hybrid welding synchronous ultrasonic stress relief device according to claim 1, wherein the base A (1) and the base B (5) are connected through a linear ball screw (4).
8. The laser-arc hybrid welding synchronous ultrasonic destressing device according to claim 7, wherein the linear ball screw (4) comprises a screw guide rail and a sliding table (21) which are matched with each other, the sliding table (21) is in threaded connection with the screw guide rail, the screw guide rail is vertically arranged on the side surface of the base A (1), and the sliding table (21) is fixedly connected with the side surface of the base B (5) through a screw.
9. The laser-arc hybrid welding synchronous ultrasonic stress relief device according to claim 7, wherein a brake device (22) is arranged at the bottom of the base B (5), the brake device (22) comprises a slide block sleeved on the lead screw guide rail, a horizontal threaded through hole is formed in the side surface of the slide block, and a screw (23) is arranged inside the threaded through hole.
10. The synchronous ultrasonic stress relief device for laser-arc hybrid welding according to claim 1, characterized in that the angle between the laser welding head (2) and the vertical direction is 0-10 °.
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| CN202022785407.3U CN214079767U (en) | 2020-11-27 | 2020-11-27 | Laser-electric arc hybrid welding synchronous ultrasonic stress relief device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117840644A (en) * | 2023-12-26 | 2024-04-09 | 侏罗纪马克热威装备科技有限公司 | Micro-control rolling welding integrated device and control system |
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2020
- 2020-11-27 CN CN202022785407.3U patent/CN214079767U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117840644A (en) * | 2023-12-26 | 2024-04-09 | 侏罗纪马克热威装备科技有限公司 | Micro-control rolling welding integrated device and control system |
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