CN206474812U - A kind of magnetic field intensity adjusting means of the electric arc combined welding of auxiliary laser - Google Patents
A kind of magnetic field intensity adjusting means of the electric arc combined welding of auxiliary laser Download PDFInfo
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- CN206474812U CN206474812U CN201720114803.9U CN201720114803U CN206474812U CN 206474812 U CN206474812 U CN 206474812U CN 201720114803 U CN201720114803 U CN 201720114803U CN 206474812 U CN206474812 U CN 206474812U
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Abstract
The utility model belongs to the electric arc combined welding correlative technology field of magnetic field assistant laser, it discloses a kind of magnetic field intensity adjusting means of the electric arc combined welding of auxiliary laser, including positioning and clamping mechanism and flux control mechanism, the positioning and clamping mechanism is used for clamping workpiece；The flux control mechanism is adjacent to the workpiece setting, and it includes flange nut, guide rail, magnet carrier, permanent magnet, leading screw and the attaching nut being fixed on the flange nut, and the flange nut is fixedly connected on the positioning and clamping mechanism；One end of the guide rail is fixedly connected on the magnet carrier after passing through the flange nut, and it is used for the mobile offer guiding for the permanent magnet and the magnet carrier；The permanent magnet is arranged in the magnet carrier；The leading screw is sequentially passed through and the magnet carrier is connected to after the attaching nut and the flange nut, and the leading screw is formed with the attaching nut and is threadedly coupled；The leading screw is by rotating to adjust the magnetic induction intensity of welded seam area.
Description
Technical Field
The utility model belongs to the technical field of the supplementary laser arc hybrid welding of magnetic field is relevant, more specifically relates to a supplementary laser arc hybrid welding's magnetic field intensity adjusting device.
Background
The magnetic field assisted laser-arc hybrid welding technology is a novel laser-arc hybrid welding process appearing in recent years, and the basic principle of the technology is that the energy density is extremely high (about 10)7W/cm2) The laser beam and the metal material act to form the keyhole deep fusion welding, the electric arc welding can enhance the bridging capacity, the external magnetic field can induce current in the metal of the molten pool and the plasma, the Lorentz force acts on the flowing metal molten pool and the plasma, the Lorentz force can inhibit or enhance the flowing of the molten pool, and the motion form of the plasma is changed to achieve the purpose of changing the appearance of a welding seamAnd grains in a welding seam area are refined, splashing and collapse are inhibited, and the utilization efficiency of laser beams is enhanced.
The external magnetic field has a stirring effect on a molten pool, so that the cross section appearance of a welding seam can be changed, the external magnetic field has a large influence on the quality and the performance of a welding joint, and the size and the direction of the magnetic field in a welding seam area need to be adjusted in order to research the influence rule of the size and the direction of the magnetic field in the welding seam area on the welding quality. However, the strength of the permanent magnet in most of the magnetic field assisted laser-arc hybrid welding cannot be adjusted, and no special device for adjusting the magnetic field of the welding seam area exists. Accordingly, there is a need in the art to develop a magnetic field strength adjustment device that can adjust the weld zone.
SUMMERY OF THE UTILITY MODEL
To the above defect or the improvement demand of prior art, the utility model provides an assist laser electric arc hybrid welding's magnetic field intensity adjusting device, its characteristics based on supplementary laser-electric arc hybrid welding in magnetic field have correspondingly designed and are applicable to supplementary laser-electric arc hybrid welding's magnetic field intensity adjusting device in magnetic field. Through designing the hookup relation between the structure and the part of the key subassembly to magnetic field intensity adjusting device, the corresponding problem of weld zone region magnetic induction intensity size and magnetic induction intensity direction all being difficult to continuous regulation in the supplementary laser electric arc hybrid welding of magnetic field intensity effectively having solved, easy operation is nimble, and it is convenient to adjust, magnetic field intensity adjusting device is applicable to the regulation of magnetic induction intensity among the supplementary laser electric arc hybrid welding process in the magnetic field intensity, and the experiment of the influence of specially adapted research magnetic induction intensity to laser electric arc hybrid welding seam quality.
In order to achieve the above object, the utility model provides an auxiliary laser electric arc hybrid welding's magnetic field intensity adjusting device, it constructs and magnetic field adjustment mechanism, its characterized in that including location clamping:
the positioning and clamping mechanism is used for positioning and clamping workpieces; the magnetic field adjusting mechanism is arranged close to the workpiece and comprises a flange nut, a guide rail, a magnet bracket, a permanent magnet, a lead screw and a connecting nut, and the flange nut is fixedly connected with the positioning clamping mechanism; one end of the guide rail penetrates through the flange nut and then is fixedly connected to the magnet bracket, and the guide rail is used for guiding the permanent magnet and the movement of the magnet bracket; the permanent magnet is arranged on the magnet bracket; one end of the lead screw sequentially penetrates through the connecting nut and the flange nut and then is connected to the magnet bracket, the connecting nut is fixed on the flange nut, and the lead screw and the connecting nut form threaded connection; the lead screw rotates to drive the permanent magnet to move along the guide rail so as to change the distance between the permanent magnet and the workpiece, and further the magnetic induction intensity of a welding seam area is adjusted.
Furthermore, the number of guide rails is two, two the guide rails set up at the interval, the lead screw is located two between the guide rails, just the center axis of guide rail with the center axis of lead screw is parallel.
Furthermore, the magnetic field adjusting mechanism also comprises an adjusting handle, and the adjusting handle is connected to one end, far away from the magnet bracket, of the screw rod; the rotation of the lead screw is driven by a manual drive or a driver.
Furthermore, the positioning and clamping mechanism comprises a horizontal fixing piece, a platform base, a positioning support plate, a rib plate and a working table, two ends of the positioning support plate are respectively and vertically fixed on the platform base and the working table, and the working table is used for supporting the workpiece; the horizontal fixing piece is fixed on the working table surface, and the ribbed plate is fixedly connected with the positioning support plate.
Furthermore, the horizontal fixing piece is provided with a groove, and the groove is used for accommodating the workpiece and facilitating the taking and placing of the workpiece; the workpiece is positioned on the working table surface and contained in the groove.
Furthermore, the number of the magnetic field adjusting mechanisms is one, the magnetic field adjusting mechanisms are fixed on the rib plates, and the lead screw rotates to change the distance between the permanent magnet and the workpiece in the vertical direction, so that the adjustment of the magnetic field in the vertical direction is realized; or,
the number of the magnetic field adjusting mechanisms is two, the two magnetic field adjusting mechanisms are oppositely fixed on the horizontal fixing piece and are symmetrically arranged relative to the central axis of the working table, and the lead screws of the two magnetic field adjusting mechanisms are respectively rotated to change the distance between the corresponding permanent magnet and the workpiece in the horizontal direction, so that the adjustment of the magnetic field in the horizontal direction is realized; or,
the magnetic field adjusting mechanisms are three in number, two of the three magnetic field adjusting mechanisms are fixed on the horizontal fixing piece at intervals, the other magnetic field adjusting mechanism is fixed on the ribbed plate, and lead screws of the three magnetic field adjusting mechanisms are respectively rotated to adjust a horizontal magnetic field and a vertical magnetic field.
Furthermore, the platform base is rectangular, two U-shaped holes are formed in two opposite ends of the platform base respectively, and the magnetic field adjusting device is installed on the base body through the U-shaped holes.
Furthermore, table surface is the octagon, and it sets up six evenly distributed's oval through-hole, six the oval through-hole is convenient for not unidimensional the clamping of work piece.
Furthermore, the worktable surface is also provided with long grooves which are arranged at intervals with the oval through holes, and the long grooves are convenient for placing alignment plates and controlling the gap of the workpiece during splicing welding.
Furthermore, the working table surface and the magnet bracket are both made of aluminum alloy; the magnetic field intensity adjusting device further comprises a graduated scale, wherein the graduated scale is arranged on the flange nut, and is convenient for recording the moving distance of the permanent magnet corresponding to each adjustment.
Generally, compared with the prior art, the magnetic field intensity adjusting device for assisting laser-arc hybrid welding provided by the utility model has the advantages that the working table surface can realize accurate positioning and clamping of workpieces; meanwhile, the magnetic field intensity in the horizontal direction of the welding seam area can be adjusted through the magnetic field adjusting mechanism, the magnetic field intensity in the vertical direction can also be adjusted, the magnetic field intensity in the vertical direction and the magnetic field intensity in the horizontal direction can be adjusted simultaneously, and the magnetic field adjusting mechanism is simple in structure, flexible to operate and high in practicability; the six waist-round through holes are convenient for clamping workpieces with different sizes, and the elongated slots are convenient for placing the alignment plates and simultaneously are convenient for controlling the gaps among the workpieces; the working table surface and the magnet bracket are both made of aluminum alloy so as to prevent the working table surface and the magnet bracket from influencing the distribution of the magnetic field of the permanent magnet. In addition, the three magnetic field adjusting mechanisms have interchangeability, are convenient to use and disassemble and assemble.
Drawings
Fig. 1 is a schematic view of a state of use of a magnetic field strength adjusting device for assisting laser arc hybrid welding according to a preferred embodiment of the present invention.
Fig. 2 is a partial schematic view of a positioning and clamping mechanism of the magnetic field intensity adjusting device for auxiliary laser arc hybrid welding in fig. 1.
Fig. 3 is a schematic view of a magnetic field adjusting mechanism of the magnetic field intensity adjusting apparatus for assisting laser arc hybrid welding in fig. 1.
FIG. 4 is a partial schematic view of a magnetic field strength adjustment apparatus of the assisted laser arc hybrid welding of FIG. 1.
FIG. 5 is a magnetic field strength adjustment apparatus for the assisted laser arc hybrid welding of FIG. 1; another partial schematic view.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: the method comprises the following steps of 1-horizontal fixing piece, 2-guide rail, 3-adjusting handle, 4-screw rod, 5-positioning support plate, 6-platform base, 7-ribbed plate, 8-bolt, 9-worktable surface, 10-magnet bracket, 11-flange nut, 12-permanent magnet, 13-scale, 14-workpiece and 15-connecting nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Please refer to fig. 1 to 4, the utility model discloses the supplementary laser arc hybrid welding's that preferred embodiment provided magnetic field intensity adjusting device, magnetic field intensity adjusting device designs through the structure to its key subassembly and the hookup relation between the part, and corresponding effectively solved among the supplementary laser arc hybrid welding of magnetic field intensity welding the problem that weld zone magnetic induction intensity size and magnetic induction intensity direction all are difficult to continuous regulation, easy operation is nimble, and it is convenient to adjust, magnetic field intensity adjusting device is applicable to the regulation of magnetic induction intensity among the supplementary laser arc hybrid welding process of magnetic field, and the experiment of the influence of research magnetic induction intensity to laser arc hybrid welding seam quality is particularly useful for.
The magnetic field intensity adjusting device comprises a positioning clamping mechanism and a magnetic field adjusting mechanism, the magnetic field adjusting mechanism is arranged on the positioning clamping mechanism, and the positioning clamping mechanism is used for positioning and clamping the workpiece 14. Meanwhile, the positioning and clamping mechanism is also used for supporting the magnetic field adjusting mechanism.
The positioning and clamping mechanism comprises a horizontal fixing piece 1, a platform base 6, a positioning support plate 5, a rib plate 7, a bolt 8 and a working table surface 9, wherein the positioning support plate 5 is connected with the platform base 6 and the working table surface 9. The horizontal fixing piece 1 is arranged on the working table surface 9. The rib plate 7 is connected to the positioning support plate 5 by the bolt 8.
The horizontal fixing member 1 is substantially in the shape of an octagonal plate and is fixed on the horizontal table top 9. The horizontal fixing member 1 is used for supporting the magnetic field adjusting mechanism, and is provided with a groove, and the groove is used for accommodating the workpiece 14 and facilitating the taking and placing of the workpiece 14.
The platform base 6 is substantially rectangular and is connected to the positioning support plate 5. Two U-shaped holes are respectively formed in two opposite ends of the platform base 6, and the magnetic field intensity adjusting device is installed on the base body through the U-shaped holes. It is understood that in other embodiments, the number of U-shaped holes of the platform base 6 can be increased or decreased according to actual needs.
Two ends of the positioning support plate 5 are respectively and vertically connected with the working table surface 9 and the platform base 6. In this embodiment, the number of the positioning support plates 5 is two, and the two positioning support plates 5 are respectively and fixedly connected to two opposite ends of the platform base 6. In the present embodiment, two positioning support plates 5 are provided at an interval.
The rib plate 7 is substantially rectangular, and two ends of the rib plate are respectively connected to the two positioning support plates 5 through the bolts 8. In this embodiment, the rib 7 is located between the platform base 6 and the working table 9, and is used for supporting the magnetic field adjusting mechanism.
The work table 9 is connected to the horizontal fixture 1 and is used to support the work piece 14. The working table surface 9 is basically octagonal, and is provided with six uniformly distributed oval through holes and elongated slots arranged at intervals with the oval through holes, and the oval through holes are convenient for clamping the workpieces 14 with different sizes; the long groove is convenient for placing the alignment plate, and can conveniently realize the control of the workpiece gap during splicing welding.
The magnetic field adjusting mechanism comprises a guide rail 2, an adjusting handle 3, a screw rod 4, a magnet bracket 10, a flange nut 11, a permanent magnet 12 and a connecting nut 15, wherein one end of the guide rail 2 penetrates through the flange nut 11 and then is fixedly connected to the magnet bracket 10, and the central axis of the guide rail is parallel to that of the screw rod 4. One end of the screw rod 4 sequentially penetrates through the connecting nut 15 and the flange nut 11 and then is fixedly connected to the magnet bracket 10, and the screw rod and the connecting nut 15 form a screw rod nut pair. The other end of the screw rod 4 is connected with the adjusting handle 3. In this embodiment, the number of the guide rails 2 of each magnetic field adjusting mechanism is two, the two guide rails 2 are arranged at intervals, the lead screw 4 is located between the two guide rails 2, and the guide rails 2 are matched with the flange nuts 11 to provide guidance for the movement of the magnet bracket 10 and the permanent magnets 12; the magnetic field adjusting mechanism is connected to the positioning and clamping mechanism through the flange nut 11.
The magnet bracket 10 is substantially convex, and an end of the magnet bracket, which is far away from the flange nut 11, is provided with a receiving groove for receiving the permanent magnet 12. Rotate adjustment handle 3, adjustment handle 3 drives lead screw 4 rotates, lead screw 4 drives magnet bracket 10 reaches permanent magnet 12 is followed guide rail 2 removes, and then changes permanent magnet 12 with distance between the work piece 14 has realized the regulation of the regional magnetic field intensity of the welding seam of work piece 14. In the present embodiment, the rotation of the adjustment handle 3 is manually driven; it will be appreciated that in other embodiments the adjustment handle 3 may be driven by a drive, such as an electric motor.
In this embodiment, the work table 9 and the magnet bracket 10 are made of aluminum alloy, and the lead screw 4 and the flange nut 11 are made of stainless steel or copper alloy, so as to prevent the work table 9 and the magnet bracket 10 from affecting the distribution of the magnetic field of the permanent magnet 12.
Referring to fig. 5, in this embodiment, the number of the magnetic field adjusting mechanisms is three, one of the three magnetic field adjusting mechanisms is fixed on the rib plate 7, and the other two magnetic field adjusting mechanisms are fixed on the horizontal fixing member 1 at intervals. The two magnetic field adjusting mechanisms fixed on the horizontal fixing member 1 are symmetrically distributed relative to the elongated slot, the permanent magnets 12 of the two magnetic field adjusting mechanisms are arranged oppositely, and the two corresponding magnetic field adjusting mechanisms can adjust the distance between the two corresponding permanent magnets 12 in the horizontal direction, so that the adjustment of the distance between the workpiece 14 and the permanent magnets 12 in the horizontal direction is realized; meanwhile, the magnetic field adjusting mechanism fixed on the ribbed plate 7 can realize the corresponding distance adjustment of the permanent magnet 12 and the workpiece 14 in the vertical direction, so that the adjustment of the size and the direction of the magnetic field intensity of a welding area is realized, the operation is simple and flexible, and the adjustment is convenient.
The magnetic field intensity adjusting device further comprises a graduated scale 13 fixed on the flange nut 11. In this embodiment, both ends of the scale 13 are respectively connected to the two flange nuts 11 provided on the horizontal fixing member 1. The graduated scale 13 is convenient for recording the moving distance of the permanent magnet 12 which is adjusted at each time, so that the subsequent quick adjustment can be carried out according to the recorded result.
The utility model provides a magnetic field intensity adjusting device for assisting laser arc hybrid welding, the working table surface of which can realize accurate positioning and clamping of workpieces; meanwhile, the magnetic field intensity in the horizontal direction of the welding seam area can be adjusted through the magnetic field adjusting mechanism, the magnetic field intensity in the vertical direction can also be adjusted, the magnetic field intensity in the vertical direction and the magnetic field intensity in the horizontal direction can be adjusted simultaneously, and the magnetic field adjusting mechanism is simple in structure, flexible to operate and high in practicability; the six waist-round through holes are convenient for clamping workpieces with different sizes, and the elongated slots are convenient for placing the alignment plates and simultaneously are convenient for controlling the gaps among the workpieces; the working table surface and the magnet bracket are both made of aluminum alloy so as to prevent the working table surface and the magnet bracket from influencing the distribution of the magnetic field of the permanent magnet. In addition, the three magnetic field adjusting mechanisms have interchangeability, are convenient to use and disassemble and assemble.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an auxiliary laser electric arc hybrid welding's magnetic field intensity adjusting device, its includes location clamping machine structure and magnetic field adjustment mechanism, its characterized in that:
the positioning and clamping mechanism is used for positioning and clamping workpieces; the magnetic field adjusting mechanism is arranged close to the workpiece and comprises a flange nut, a guide rail, a magnet bracket, a permanent magnet, a lead screw and a connecting nut, and the flange nut is fixedly connected with the positioning clamping mechanism; one end of the guide rail penetrates through the flange nut and then is fixedly connected to the magnet bracket, and the guide rail is used for guiding the permanent magnet and the movement of the magnet bracket; the permanent magnet is arranged on the magnet bracket; one end of the lead screw sequentially penetrates through the connecting nut and the flange nut and then is connected to the magnet bracket, the connecting nut is fixed on the flange nut, and the lead screw and the connecting nut form threaded connection; the lead screw rotates to drive the permanent magnet to move along the guide rail so as to change the distance between the permanent magnet and the workpiece, and further the magnetic induction intensity of a welding seam area is adjusted.
2. The apparatus for regulating magnetic field strength in hybrid laser arc welding as claimed in claim 1, wherein: the number of guide rails is two, two the guide rail interval sets up, the lead screw is located two between the guide rail, just the center pin of guide rail with the center pin of lead screw is parallel.
3. The apparatus for regulating magnetic field strength in hybrid laser arc welding as claimed in claim 1, wherein: the magnetic field adjusting mechanism further comprises an adjusting handle, and the adjusting handle is connected to one end, far away from the magnet bracket, of the screw rod; the rotation of the lead screw is driven by a manual drive or a driver.
4. The apparatus for regulating magnetic field strength in hybrid laser arc welding as claimed in claim 1, wherein: the positioning and clamping mechanism comprises a horizontal fixing piece, a platform base, a positioning support plate, a rib plate and a working table, wherein two ends of the positioning support plate are respectively and vertically fixed on the platform base and the working table, and the working table is used for supporting the workpiece; the horizontal fixing piece is fixed on the working table surface, and the ribbed plate is fixedly connected with the positioning support plate.
5. The apparatus for regulating magnetic field strength in hybrid laser arc welding as claimed in claim 4, wherein: the horizontal fixing piece is provided with a groove, and the groove is used for accommodating the workpiece and facilitating the taking and placing of the workpiece; the workpiece is positioned on the working table surface and contained in the groove.
6. The apparatus for adjusting magnetic field strength in hybrid laser arc welding as claimed in claim 5, wherein: the number of the magnetic field adjusting mechanisms is one, the magnetic field adjusting mechanisms are fixed on the rib plates, and the lead screw rotates to change the distance between the permanent magnet and the workpiece in the vertical direction, so that the adjustment of the magnetic field in the vertical direction is realized; or,
the number of the magnetic field adjusting mechanisms is two, the two magnetic field adjusting mechanisms are oppositely fixed on the horizontal fixing piece and are symmetrically arranged relative to the central axis of the working table, and the lead screws of the two magnetic field adjusting mechanisms are respectively rotated to change the distance between the corresponding permanent magnet and the workpiece in the horizontal direction, so that the adjustment of the magnetic field in the horizontal direction is realized; or,
the magnetic field adjusting mechanisms are three in number, two of the three magnetic field adjusting mechanisms are fixed on the horizontal fixing piece at intervals, the other magnetic field adjusting mechanism is fixed on the ribbed plate, and lead screws of the three magnetic field adjusting mechanisms are respectively rotated to adjust a horizontal magnetic field and a vertical magnetic field.
7. The apparatus for regulating magnetic field strength in hybrid laser arc welding as claimed in claim 4, wherein: the platform base is rectangular, two U-shaped holes are formed in two opposite ends of the platform base respectively, and the magnetic field adjusting device is installed on the base body through the U-shaped holes.
8. The apparatus for regulating magnetic field strength in hybrid laser arc welding as claimed in claim 4, wherein: the worktable surface is octagonal and is provided with six uniformly distributed oval through holes, and the oval through holes are convenient for clamping workpieces in different sizes.
9. The apparatus for regulating magnetic field strength in hybrid laser arc welding as claimed in claim 8, wherein: the worktable surface is also provided with elongated slots which are arranged at intervals with the waist-round through holes, and the elongated slots are convenient for placing alignment plates and controlling the gap of the workpiece during splicing welding.
10. The apparatus for regulating magnetic field strength in hybrid laser arc welding as claimed in claim 4, wherein: the working table surface and the magnet bracket are both made of aluminum alloy; the magnetic field intensity adjusting device further comprises a graduated scale, wherein the graduated scale is arranged on the flange nut, and is convenient for recording the moving distance of the permanent magnet corresponding to each adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720114803.9U CN206474812U (en) | 2017-02-08 | 2017-02-08 | A kind of magnetic field intensity adjusting means of the electric arc combined welding of auxiliary laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720114803.9U CN206474812U (en) | 2017-02-08 | 2017-02-08 | A kind of magnetic field intensity adjusting means of the electric arc combined welding of auxiliary laser |
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| CN206474812U true CN206474812U (en) | 2017-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720114803.9U Withdrawn - After Issue CN206474812U (en) | 2017-02-08 | 2017-02-08 | A kind of magnetic field intensity adjusting means of the electric arc combined welding of auxiliary laser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670664A (en) * | 2017-02-08 | 2017-05-17 | 华中科技大学 | Magnetic field intensity adjusting device for assisting laser and arc hybrid welding |
| CN110576262A (en) * | 2019-09-05 | 2019-12-17 | 上海交通大学 | Laser welding experimental device capable of realizing magnetic field auxiliary forming |
-
2017
- 2017-02-08 CN CN201720114803.9U patent/CN206474812U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670664A (en) * | 2017-02-08 | 2017-05-17 | 华中科技大学 | Magnetic field intensity adjusting device for assisting laser and arc hybrid welding |
| CN106670664B (en) * | 2017-02-08 | 2018-10-30 | 华中科技大学 | A kind of magnetic field intensity regulating device of the electric arc combined welding of auxiliary laser |
| CN110576262A (en) * | 2019-09-05 | 2019-12-17 | 上海交通大学 | Laser welding experimental device capable of realizing magnetic field auxiliary forming |
| CN110576262B (en) * | 2019-09-05 | 2022-01-28 | 上海交通大学 | Laser welding experimental device capable of realizing magnetic field auxiliary forming |
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Granted publication date: 20170908 Effective date of abandoning: 20181030 |
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