CN113953651A - Center embedded magnetic type friction stir welding device with adjustable magnetization degree - Google Patents
Center embedded magnetic type friction stir welding device with adjustable magnetization degree Download PDFInfo
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- CN113953651A CN113953651A CN202111369891.4A CN202111369891A CN113953651A CN 113953651 A CN113953651 A CN 113953651A CN 202111369891 A CN202111369891 A CN 202111369891A CN 113953651 A CN113953651 A CN 113953651A
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a central embedded magnetic type friction stir welding device with adjustable magnetization degree, which comprises a hollow structure motor spindle, a clamping device, a stirring head, a cooling system and a welding workbench, wherein the stirring head is arranged in a hollow inner cavity of the motor spindle through the clamping device, a cavity of the stirring head is filled with a cylindrical strong magnet, a shaft shoulder is provided with a hole groove structure, the motor spindle rotates at high speed to drive the stirring head filled with the cylindrical strong magnet to rotate, the magnetic field strength of the end surface of the shaft shoulder of the magnetic stirring head is changed, and the magnetic field convergence is enhanced in a welding seam by combining a magnetic conduction backing plate and matching with a different name strong magnet, so that electromagnetic force is formed, the plastic metal mechanical stirring of a welding zone is enhanced, the plasticized metal flow is promoted, the grain structure refinement in the friction stir welding process is improved, and the comprehensive performance is obviously improved.
Description
Technical Field
The invention relates to the field of metal welding processing, in particular to a stirring head suitable for novel friction stir welding and a using technology thereof.
Background
In recent years, as for the research on the magnetic control welding technology under the action of electromagnetism, researchers at home and abroad are focusing more on the application of an alternating magnetic field to fusion welding.
Such as: chinese patent CN201820827965.1 discloses equipment for electromagnetic assisted friction stir welding of high melting point alloy, which comprises a current loading unit, a magnetic field loading unit and a friction stir welding unit, and can realize local loading of high-density pulse current and strong magnetic field in a welding area in the welding process, the friction stir welding unit can realize friction stir welding processing, and in the processing process, the current loading unit and the magnetic field loading unit move synchronously along with a stirring head.
For another example: chinese patent CN201810472656.1 discloses a friction stir welding device under electromagnetic assistance, which comprises a hydraulic drive and control unit, a precision mechanical drive and control unit, an electromagnetic loading unit, a test piece clamping unit, a signal detection unit, a test piece protection unit and a support unit. The electromagnetic-assisted friction stir welding can be realized, so that the influence of an electric field and a magnetic field on the performance of a welding material can be researched.
The induction coil is mainly applied, the magnetic field intensity is controlled by controlling the frequency of the alternating current, an auxiliary device is required to be added in the mode, the difficulty is increased, higher requirements are provided for equipment, and certain limitation is realized.
Through reading a large amount of domestic and foreign documents, the application report of the magnetic control welding technology in the aspect of friction stir welding is very rare. An electromagnetic assisted friction stir welding device and a method for refining crystal grains thereof are proposed in the patent (application number: CN 105728934A) of domestic Wanghongze et al, but the patent has some problems:
firstly, from the electrical principle, the patent adds wires on two ends of a weldment to ensure that direct current completely passes through a weld zone to be matched with a magnetic field, but in the practical implementation process, the current always flows along the direction with smaller resistance, the patent does not consider the difference of the resistivity between the weld zone and a parent metal, and the principle is not applicable;
secondly, according to the analysis of the magnetic principle, the patent applies the same-name magnetic poles to the two ends of the welding seam to generate dense magnetic induction lines on the butt joint surface of the welding seam, but according to the mutual repulsion principle of the same-name magnetic poles, the magnetic induction lines are distributed to the two sides more close to the workpiece, and the gathering effect of magnetic flux in the center of the welding seam cannot be achieved;
thirdly, the whole welding operation platform is made of conductive materials, potential safety hazards exist when direct current is conducted among workpieces, the workpieces are not available, a constant magnetic field is applied among direct current leads, the leads can generate force in one direction, and welding seam metal cannot be uniformly stirred.
In summary, the following steps: through analysis, the scheme can not achieve expected results during welding, and the theory is not feasible.
Therefore, in order to solve the above problems, it is necessary to design a new magnetic field assisted friction stir welding device from another innovative point of view, which has a very important reference significance for the application and research of the magnetic control welding technology in friction stir welding, and has a certain practical significance for manufacturing.
Disclosure of Invention
In order to solve the technical problem, the application provides a center-embedded magnetic stirring friction welding device with adjustable magnetization degree: the problem of increasing welding auxiliary devices caused by locally loading high-density current and a strong magnetic field on a welding area in the prior art is solved, whether the current can reach a target position in a balanced manner or not due to the difference of resistivity between the welding area and a base metal is solved, and unsafe factors are caused by applying electric fields at two ends of a workpiece; when in welding, a heteronymous strong magnet is added below a welding seam of a workpiece to solve the problem of poor electromagnetic convergence effect.
In order to achieve the above purpose, the present application is implemented by the following technical solutions:
the application a magnetization degree adjustable center inlay magnetism formula friction stir welding device include: motor main shaft, clamping device, stirring head, cooling system and weldment work platform, the motor main shaft is hollow structure, the stirring head passes through clamping device to be installed in the hollow inner chamber of motor main shaft, the stirring head make by magnetic material, the stirring head includes: the stirring head comprises a stirring head main body, a shaft shoulder, a stirring needle and a cavity which is formed in the stirring head main body, wherein a cylindrical strong magnet is filled in the cavity, a downward hole groove structure is formed in the shaft shoulder, and the stirring head filled with the cylindrical strong magnet is driven to rotate at a high speed by the high-speed rotation of a motor main shaft, so that a changed magnetic field is generated on the end face of the shaft shoulder.
The application is further improved in that: the middle part of the stirring head 3 is provided with a clamping and positioning step, a conical surface transition structure is arranged between the shaft shoulder and the stirring head main body, the hole groove structure is a circular hole structure which is arranged on the conical table surface of the shaft shoulder and has different depth, the arranged circular hole structure is 1-7 circular holes, and when 1 circular hole is arranged, the end surface of the shaft shoulder is not provided with an opening part and is different from the material thickness of the circular hole, so that the magnetic flux change is formed.
The application is further improved in that: the stirring head is characterized in that an end cover is installed on the upper end face of the stirring head, the end cover is matched with the stirring head and a cylindrical strong magnet for use, the end cover is of a cylindrical structure provided with a clamping and embedding concave-convex contact surface, and the end cover is made of a shielding magnetic material.
The application is further improved in that: the clamping device is matched with the ER chuck and the ER chuck locking nut for use.
The application is further improved in that: the welding work table top includes: the welding support platform and the workpiece placing base plate are welded, a groove structure is arranged at the welding seam of the workpiece on the base plate, a strong magnetic strip is arranged in the groove, and a cover plate which is parallel to the upper surface of the base plate is arranged on the surface of the strong magnetic strip.
The application is further improved in that: the strong magnetic strip and the magnetic pole of the cylindrical strong magnet in the stirring head are arranged in a different way.
The application is further improved in that: the cooling system comprises a first cooling spraying device, a second cooling spraying device and a cooling cover, the cooling cover is fixed on the cylindrical surface below the clamping portion of the stirring head, the section of the cooling cover is of an open arc-shaped groove structure, the first cooling spraying device sprays cooling liquid into the open arc-shaped groove to cool the stirring head, and the second cooling spraying device cools the shaft shoulder and the welding line.
The application is further improved in that: the cooling jacket 43 is made of copper, and the end cap 7 is made of stainless steel or titanium alloy.
The application is further improved in that: the cylindrical strong magnet 6 is installed by selecting strong magnets with different strengths to adapt to different welding requirements, or the strength of a magnetic field at a shaft shoulder is adjusted by adjusting the rotating speed of the motor spindle 1 through a motor.
This application magnetization degree adjustable center inlays magnetism formula friction stir welding device has following beneficial effect:
1. the stirring head shaft shoulder is provided with a hole groove structure, an alternating rotating magnetic field which is distributed in a blocking mode and takes the center of a stirring needle as the shaft is formed based on high rotating speed, the metal in a solid-phase welding area is dragged, the solid-phase welding area is heated, and meanwhile, the flowing of plastic metal is promoted, the macroscopic explanation is that when a closed conductor and a magnetic pole move relatively, electromagnetic resistance can be generated between the closed conductor and the magnetic pole, the relative movement is blocked, the magneto-plastic effect and the electro-induced effect of a welding material can be realized without more electromagnetic auxiliary devices, the auxiliary stirring friction welding is favorable for accelerating the plastic deformation of the welding material, the effect of grain refinement is realized, the energy consumption is reduced, and the welding efficiency and the comprehensive performance of a welding joint are obviously improved;
2. the strong magnetic strip is arranged below the magnetic conduction base plate and is matched with the end face of the magnetic conduction stirring pin to form a synonym magnetic pole, magnetic lines of force are gathered and penetrate through a weld nugget area, the magnetic lines of force assist the mechanical stirring effect of the stirring head, the rotating magnetic field has the cutting effect of the magnetic lines of force on a welding material, the plastic flow and phase transition temperature of the welding area material are improved, the plastic metal mechanical stirring of a welding area is enhanced, the plastic metal flow is promoted, the welding seam tissue can be more uniform under the magnetic stirring effect, the plastic deformation resistance of the material is reduced, and the welding seam quality is improved;
3. the cylindrical strong magnets with different strengths are replaced, or different motor rotating speeds are called to realize the adjustment of different magnetic field strengths; the magnetic field energy input response is fast, the method is a green manufacturing and sustainable development mode with simple integral structure, low cost and good welding effect, and is a brand new passive magnetic control welding method with high safety.
Drawings
FIG. 1 is a schematic view of a center embedded magnetic type friction stir welding device with adjustable magnetization degree.
FIG. 2 is a schematic view of the shoulder
FIG. 3 is a schematic view of a cooling jacket.
Fig. 4 is a schematic view of an end cap.
The attached drawings indicate the following:
1-motor spindle, 2-clamping device, 21-ER chuck, 22-ER chuck locking nut, 3-stirring head, 31-stirring head main body, 32-shaft shoulder, 33-stirring needle, 34-cavity, 35-hole groove structure, 4-cooling system, 41-first cooling spraying device, 42-second cooling spraying device, 43-cooling cover, 44-opening arc groove structure, 5-welding worktable, 51-welding supporting platform, 52-backing plate, 53-groove structure, 54-cover plate, 6-cylindrical strong magnet, 7-end cover and 8-strong magnetic strip.
Detailed Description
For the purpose of enhancing the understanding of the present application, the present application will be described in further detail with reference to the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present application. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of the present application.
As shown in fig. 1-4, the present application provides an embodiment 1 of a magnetic stir friction welding device with an adjustable magnetization center, including a motor spindle 1, a clamping device 2, a stirring head 3, a cooling system 4 and a welding bench 5, where the motor spindle 1 is a hollow structure, the stirring head 3 is installed in a hollow inner cavity of the motor spindle 1 through the clamping device 2, the stirring head 3 is made of a magnetic conductive material, and the stirring head 3 includes: the stirring head comprises a stirring head main body 31, a shaft shoulder 32, a stirring pin 33 and a cavity 34 formed in the stirring head main body 31, wherein a cylindrical strong magnet 6 is filled in the cavity 34, a downward hole groove structure 35 is formed in the shaft shoulder 32, and the motor spindle 1 rotates at a high speed to drive the stirring head 3 filled with the cylindrical strong magnet 6 to rotate at a high speed, so that the end face of the shaft shoulder 32 generates a changing magnetic field. The stirring head 3 is filled with a cylindrical strong magnet 6, the shaft shoulder of the stirring head is provided with a porous groove structure and is filled with the cylindrical strong magnet, the difference of the magnetic fluxes of all parts of the shaft shoulder is obvious, the changed magnetic fluxes are generated when the stirring head rotates at a high speed, an alternating rotating magnetic field which takes the center of a stirring pin as the shaft and is distributed in a blocking manner is formed, the metal in a solid-phase welding area is dragged, the solid-phase welding area is heated, the flowing of plastic metal is promoted simultaneously, the macroscopic interpretation is that when a closed conductor and a magnetic pole move relatively, electromagnetic resistance can be generated between the closed conductor and the magnetic pole, the relative movement is hindered, the mechanical stirring effect of the stirring pin is enhanced, and the refining of weld joint tissue grains is facilitated.
More preferably: the middle part of the stirring head 3 is provided with a clamping and positioning step, a conical surface transition structure is arranged between the shaft shoulder 32 and the stirring head main body 31, and the hole groove structure 35 is a circular hole structure which is arranged on the conical table surface of the shaft shoulder 32 and has different depth. The round hole structure is formed by 1-7 round holes with different sizes and depths; when 1 round hole is arranged, the difference of the magnetic flux of each part of the shaft shoulder is obvious, the stirring head generates changed magnetic flux when rotating at high speed, in the figure, 3 round holes with different depths are arranged, the more the holes are arranged, the higher the magnetic flux change frequency is, and the better the grain refining effect is. Holes with different sizes can be arranged to achieve the same effect.
More preferably: end cover 7 is installed to stirring head 3 up end, end cover 7 uses with stirring head 3 and the cooperation of cylinder strong magnet 6, end cover 7 be the cylindric structure that is equipped with the unsmooth contact surface 71 of inlay card, end cover 7 is made by the screen magnetic material, end cover 7 make by stainless steel or titanium alloy. The end cover covers the upper part of the strong magnet, so that the effect of isolating the magnetic field generated by most of the magnets can be achieved, and the normal work of the motor connected with the motor rotating hollow main shaft 1 can be guaranteed. The concave-convex contact surface of the end cover can be tightly matched with the stirring head, so that the positioning function is realized, and meanwhile, the function of increasing and holding the fixed part can also be realized.
More preferably: the clamping device 2 is matched with an ER chuck (21) and an ER chuck locking nut (22) for use. The stirring head is clamped and fixed by the clamping device, and the concentricity of the stirring needle and the motor is ensured.
More preferably: the welding work table 5 comprises: the welding support platform 51 and the workpiece placing backing plate 52 are welded, a groove structure 53 is arranged at the welding seam of the workpiece on the backing plate 52, a strong magnetic strip 8 is arranged in the groove 53, and a cover plate 54 which is flush with the upper surface of the backing plate 52 is arranged on the surface of the strong magnetic strip 8; the strong magnetic strip 8 and the cylindrical strong magnet 6 in the stirring head 3 are placed in a way that the magnetic poles are different. The strong magnetic strip can greatly enhance the convergence effect of magnetic flux, so that magnetic lines of force can penetrate through a to-be-welded worker as much as possible, the magnetic lines of force assist the mechanical stirring effect of the stirring head, the rotating magnetic field has the cutting effect of the magnetic lines of force on a welding material, the plastic flowing and phase-change temperature of the material in a welding area is improved, and the quality of a welding seam is improved.
More preferably: the cooling system 4 comprises a first cooling spraying device 41, a second cooling spraying device 42 and a cooling cover 43, the cooling cover 43 is fixed on a cylindrical surface below the clamping part of the stirring head 3, the section of the cooling cover 43 is an open arc-shaped groove structure 44, the first cooling spraying device 41 sprays cooling liquid into the open arc-shaped groove 44 to cool the stirring head, and the second cooling spraying device 42 cools the shaft shoulder and the welding line; the cooling jacket 43 is made of copper. In the process of high-speed rotation of the stirring head, the cooling liquid directly splashes out due to centrifugal force when contacting the stirring head, and the cooling effect is poor. The unique opening arc slot structural design of cooling jacket can avoid it directly to splash away because of the water droplet that centrifugal force threw away contacts with it one step more, reaches abundant refrigerated effect, because the heat conductivility of copper is good, avoids welding temperature too high to reach strong magnet curie temperature point, and the maximize reduces the loss of magnetic field energy.
More preferably: the cylindrical strong magnet 6 is installed by selecting strong magnets with different strengths to adapt to different welding requirements, or the strength of a magnetic field at a shaft shoulder is adjusted by adjusting the rotating speed of the motor spindle 1 through a motor. The device has the advantages that the magnetic field intensity is convenient to adjust, strong magnets with different intensities are selected according to specific technological parameters, and the device is easy to replace.
More preferred example 2: the shaft shoulder 32 is provided with downward hole-groove structures which are elliptical holes, elongated holes or hole grooves with different depths of other structures, and the other structures are the same as those in embodiment 1.
The main operation steps of the magnetization degree adjustable center embedded magnetic stirring friction welding device are as follows:
SP 1: firstly, the cooling cover 43 is sleeved on the side surface of the cylinder with the maximum outer diameter of the magnetic conduction stirring head 3, and then the cooling cover and the cylinder are fixed by adopting a spot welding process;
SP 2: filling the prepared cylindrical strong magnet 6 into a hollow cavity of the stirring head 3, and sleeving the clamped concave-convex contact surface 71 of the end cover 7 made of stainless steel shielding magnetic material on the clamping part of the stirring head 3;
SP 3: placing the stirring head prepared by SP2 into a hollow cavity of a motor spindle provided with a clamping device 2, clamping and fixing the stirring head by an ER chuck and an ER nut, and fastening the stirring head on a motor rotating hollow spindle 1;
SP 4: preparation of the welding stage 5: installing a strong magnetic strip in a groove of a backing plate, placing the magnetic pole of the installed strong magnetic strip and the magnetic pole of a strong magnet in a spring nest hole in a different way, then covering and installing an iron cover plate on the upper part of the strong magnetic strip, placing the installed magnetic conduction backing plate on a work support table board, and installing a welding workpiece on the work support table board by using a pressing device;
SP 5: adjusting the height of the magnetic stirring friction head 7, and editing a required welding program in the CNC control panel; starting a welding workbench, and starting welding; the stirring pin of the stirring head is inserted into the welding seam, the metal around the welding seam is stirred along with the high-speed rotation of the main shaft, and the metal material in the stirred welding seam is promoted to form a compact welding seam through the rolling of the shaft shoulder of the stirring head rotating at high speed.
SP 6: when the stirring pin begins to descend and approaches to a welded workpiece, switches of a first cooling device and a second cooling device are turned on, a nozzle of the first cooling device is aligned with the cooling cover 43, a nozzle of the second cooling device is aligned with the shaft shoulder position of the magnetic conduction stirring head 3, and the shaft shoulder and the welding seam tissue around the shaft shoulder are cooled.
The operation principle of the application is as follows:
because the shaft shoulder of the stirring head is provided with a hole groove structure and the inner cavity is filled with a cylindrical strong magnet, the difference of the magnetic flux of each part of the stirring head shoulder based on high rotation is obvious, the stirring head generates changed magnetic flux when rotating at high speed to form an alternating rotating magnetic field which is distributed in a blocking way and takes the center of a stirring needle as the axis, the static magnetic field which is formed by strong magnetic strips with different polarities below a welding workbench is matched to have the collecting effect on the upper magnetic field, more magnetic lines of force pass through a welding seam are generated at the welding seam of the shaft shoulder, and simultaneously, an alternating pulse electric field is generated at the welding seam, and in the plastic deformation process of friction stir welding metal, eddy current is generated by the dynamic static magnetic field, the direction of the eddy current is changed along with the direction of the rotating magnetic field instantaneously, so that great promotion effect is generated on the dislocation motion of a stirring area, thereby the dynamic recrystallization of crystal grains is intensified, and the crystal grains are refined; the alternating pulse electric field is applied to the butt joint of the weldment, the action of electronic wind power is introduced, instantaneously, the double action of electromagnetic auxiliary friction stir welding influences the strengthening effect of dislocation movement in the metal, the surmounting obstacle of dislocation is greatly reduced, the double action of electromagnetism can change the solidification state and the temperature distribution in the solidification process of the weld metal, the structure and the phase structure are improved, weld grain refinement is promoted, chemical nonuniformity and defects are reduced, the welding energy consumption is reduced, the welding efficiency is improved, and a welding joint with excellent comprehensive performance is formed.
The embodiments of the present application disclose preferred embodiments, but are not limited thereto, and those skilled in the art can easily understand the spirit of the present application and make various extensions and changes without departing from the spirit of the present application, and therefore, the scope of the present invention is within the scope of the present invention.
Claims (9)
1. The utility model provides an adjustable center of magnetization inlays magnetism formula friction stir welding device, includes motor spindle (1), clamping device (2), stirring head (3), cooling system (4) and weldment work platform (5), motor spindle (1) is hollow structure, install in the hollow inner chamber of motor spindle (1) through clamping device (2) stirring head (3), its characterized in that: the stirring head (3) is made of a magnetic conductive material, and the stirring head (3) comprises: stirring head main part (31), shaft shoulder (32), stirring needle (33) and cavity (34) that stirring head main part (31) was seted up, cylindrical strong magnet (6) are filled in cavity (34), set up decurrent hole groove structure (35) on shaft shoulder (32), motor spindle (1) high-speed rotation drives stirring head (3) high-speed the rotating of being filled with cylindrical strong magnet (6), thereby shaft shoulder (32) terminal surface produce the magnetic field that changes.
2. The magnetization-adjustable center-embedded friction stir welding device according to claim 1, wherein: the stirring head is characterized in that a clamping and positioning step is arranged in the middle of the stirring head (3), a conical surface transition structure is arranged between the shaft shoulder (32) and the stirring head main body (31), and the hole groove structure (35) is a circular hole structure which is arranged on the shaft shoulder (32) and is different in depth from the conical table top.
3. The magnetization-adjustable center-embedded friction stir welding device according to claim 1, wherein: end cover (7) are installed to stirring head (3) up end, end cover (7) and stirring head (3) and cylinder strong magnet (6) cooperation use, end cover (7) for being equipped with the cylindric structure of the unsmooth contact surface (71) of inlay card, end cover (7) are made by the screen magnetic material.
4. The magnetization-adjustable center-embedded friction stir welding device according to claim 1, wherein: the clamping device (2) is matched with an ER chuck (21) and an ER chuck locking nut (22) for use.
5. The magnetization-adjustable center-embedded friction stir welding device according to claim 1, wherein: the welding work table (5) comprises: backing plate (52) is placed to welding supporting platform (51) and work piece, backing plate (52) seted up groove structure (53) in work piece welded joint department, recess (53) in be equipped with strong magnetic stripe (8), and be equipped with apron (54) with backing plate (52) upper surface parallel and level on strong magnetic stripe (8) surface.
6. The magnetization-adjustable center-embedded friction stir welding device according to claim 5, wherein: the strong magnetic strip (8) and the magnetic pole of the cylindrical strong magnet (6) in the stirring head (3) are arranged in a different way.
7. The magnetization-adjustable center-embedded friction stir welding device according to claim 1, wherein: cooling system (4) include first cooling atomizer (41), second cooling atomizer (42) and cooling jacket (43), cooling jacket (43) are fixed on the face of cylinder of agitator head (3) clamping part below, cooling jacket (43) cross-section be opening arc slot structure (44), first cooling atomizer (41) sprays the coolant liquid to open-ended arc slot (44) and carries out cooling to the agitator head, second cooling atomizer (42) carry out cooling to shaft shoulder and welding seam.
8. The magnetization-adjustable center-embedded friction stir welding device according to claim 7, wherein: the cooling cover (43) is made of copper, and the end cover (7) is made of stainless steel or titanium alloy.
9. The magnetization-adjustable center-embedded friction stir welding device according to claim 1, wherein: the cylindrical strong magnet (6) is installed by selecting strong magnets with different strengths to adapt to different welding requirements, or the strength of a magnetic field at a shaft shoulder is adjusted by adjusting the rotating speed of the motor spindle (1) through a motor.
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| CN202111369891.4A CN113953651B (en) | 2021-11-18 | 2021-11-18 | Magnetization degree adjustable center embedded magnetic type friction stir welding device |
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| CN202111369891.4A CN113953651B (en) | 2021-11-18 | 2021-11-18 | Magnetization degree adjustable center embedded magnetic type friction stir welding device |
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| CN113953651B CN113953651B (en) | 2023-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769834A (en) * | 2022-03-23 | 2022-07-22 | 江苏科技大学 | Magnetic vibration friction stir welding device and welding method for selected area of thin-wall metal |
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| CN105728934A (en) * | 2016-04-25 | 2016-07-06 | 西安建筑科技大学 | Electromagnetic auxiliary friction stir welding device and method for refining crystal grains by aid of same |
| CN208787747U (en) * | 2018-06-06 | 2019-04-26 | 上海工程技术大学 | A kind of floating type double static shaft shoulder stirring-heads |
| CN111618418A (en) * | 2020-06-05 | 2020-09-04 | 苏州市永创金属科技有限公司 | Robot friction stir welding device for realizing flexible transformation of welding thickness |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114769834A (en) * | 2022-03-23 | 2022-07-22 | 江苏科技大学 | Magnetic vibration friction stir welding device and welding method for selected area of thin-wall metal |
| CN114769834B (en) * | 2022-03-23 | 2024-04-19 | 江苏科技大学 | Thin-wall metal selective magnetic vibration friction stir welding device and welding method |
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