Laser-assisted amorphous alloy connecting device and method

Abstract

The invention relates to the technical field of amorphous alloy welding, and provides a laser-assisted amorphous alloy connecting device and method.The connecting device comprises an upper clamp, a lower clamp and a pressurizing mechanism, the upper clamp and the lower clamp are fixed to the two opposite sides of the pressurizing mechanism, and the pressurizing mechanism can drive the upper clamp to move up and down; the pressurizing mechanism is provided with two rotating mechanisms, and the two rotating mechanisms are respectively connected with the upper clamp and the lower clamp; the connecting device is provided with a laser heating mechanism, the laser heating mechanism is installed on the pressurizing mechanism, and the laser heating mechanism is provided with lasers facing the upper clamp and the lower clamp respectively. The connecting device can be connected with the amorphous alloy in the thickness direction, high connecting quality and repeated connecting stability are kept, meanwhile, the amorphous state of the amorphous alloy can be kept, the consistency of material performance is guaranteed, and welding compression deformation of an amorphous alloy matrix is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of amorphous alloy welding, and particularly to a laser-assisted amorphous alloy connection device and method. Background Art

[0002] Amorphous alloys are solid alloys formed by ultra-rapid solidification. When the alloy solidifies, atoms do not have time to arrange and crystallize orderly, resulting in a long-range disordered structure. The molecules (or atoms, ions) that make up it do not show a regular periodicity in space, and there are no grains and grain boundaries in crystalline alloys. Due to its unique disordered atomic structure, excellent mechanical and physico-chemical properties, it has a very wide range of applications. At present, the amorphous alloy welding technology mainly uses laser welding, ultrasonic welding, electron beam welding, etc. The above welding methods all have certain requirements for the thickness of amorphous alloys, and it is difficult to achieve welding and forming of amorphous alloys in the thickness direction, encountering obstacles in the preparation of large-size amorphous alloys.

[0003] However, the Chinese invention patent with the publication number CN113618222B discloses a "welding process for amorphous alloys", which uses a heating plate to heat the welding surface and then welds the amorphous alloy in a hot pressing form. It can weld and form bulk amorphous alloys in the thickness direction and can weld amorphous alloys of various thicknesses, greatly reducing the difficulty of manufacturing bulk amorphous alloys. However, there are still some problems with only the hot pressing method, such as the low connection strength of the formed amorphous alloy, resulting in the problem that the thickness of the amorphous alloy increases after continuous welding but the connection is unstable.

[0004] In addition, the Chinese invention patent with the publication number CN116810122A discloses an "amorphous alloy connection device", which uses a coil to heat the amorphous alloy and welds the amorphous alloy by means of ultrasonic vibration, rotational friction and pressurization, which can improve the performance of the finally obtained amorphous alloy. However, heating the amorphous alloy with a coil will soften a part of the matrix due to heat and thus be compressed, causing welding deformation. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, one of the purposes of the present invention is to provide a laser-assisted amorphous alloy connection device, which uses adjustable large-spot laser-assisted heating and rotates friction and extrusion to weld amorphous alloys in the thickness direction, can effectively maintain the amorphous state of amorphous alloys, and has good connection effects.

[0006] The present application specifically adopts the following solutions:

[0007] A laser-assisted amorphous alloy connection device, comprising an upper fixture, a lower fixture and a pressurizing mechanism. The upper fixture and the lower fixture are fixed on opposite sides of the pressurizing mechanism, and the pressurizing mechanism can drive the upper fixture to move up and down. Two rotating mechanisms are provided on the pressurizing mechanism, and the two rotating mechanisms are respectively connected to the upper fixture and the lower fixture. The connection device is provided with a laser heating mechanism, the laser heating mechanism is installed on the pressurizing mechanism, and the laser heating mechanism has lasers respectively facing the upper fixture and the lower fixture.

[0008] The upper fixture and the lower fixture are oppositely arranged on the pressurizing mechanism. The upper fixture is driven by the pressurizing mechanism and can move closer to the lower fixture, while the lower fixture is fixed. During operation, two amorphous alloys are respectively clamped on opposite sides of the upper fixture and the lower fixture. By relying on the pressurizing mechanism to drive the upper fixture, the two amorphous alloys are squeezed against each other. The two rotating mechanisms can respectively drive the upper fixture and the lower fixture, so that the upper fixture and the lower fixture rotate coaxially and can rotate in opposite directions. Therefore, when the amorphous alloys are squeezed, the two amorphous alloys will also rub against each other to promote the entry of amorphous alloy molecules, ions or atoms into the molecular gaps of another amorphous alloy, thereby promoting fusion connection. In addition, the connection device uses the laser heating mechanism to irradiate the amorphous alloys fixed on the upper fixture and the lower fixture at the same time. By adjusting the spot size and shape with the laser, a large-spot laser can be irradiated on more than half of the surface of the amorphous alloy, and dynamic radiant heating is carried out in cooperation with the rotational movement, achieving the effect of rapid and uniform heating. Through the actions of laser radiation, rotational friction and extrusion, the connection of the amorphous alloy will be very firm, and the laser heating causes a temperature gradient in the thickness direction of the amorphous alloy, which can reduce the substrate temperature and thus reduce its softening degree and the amount of welding deformation.

[0009] Preferably, the laser heating mechanism includes two brackets, and each bracket is connected with the laser.

[0010] One ends of the two brackets are respectively installed on the upper part and the lower part of the pressurizing mechanism, and the lasers on the brackets face different directions. Specifically, the laser on the bracket installed on the upper part of the pressurizing mechanism controls the laser to irradiate the bottom surface of the upper fixture, and the laser on the bracket installed on the lower part of the pressurizing mechanism controls the laser to irradiate the top surface of the lower fixture, so as to heat the surfaces of the fixed amorphous alloys respectively, and synchronously and rapidly heat the connection surfaces of the two amorphous alloys without heating the whole of the two amorphous alloys.

[0011] Preferably, the laser heating mechanism includes two brackets, and a laser lens is connected to each bracket, and the laser lens is connected with the laser.

[0012] When using a laser without a lens, a laser lens can be independently set at the end of the bracket and connected to the laser through the laser lens, so as to achieve the effect of laser irradiation. Moreover, the size and type of the laser lens can be changed according to the emission power of the laser. Furthermore, uniform large spot irradiation can be adopted to rapidly and uniformly heat the welding surface under the condition of not heating the whole amorphous alloy welding material, so that the surface temperature of the amorphous alloy reaches the supercooled liquid phase region.

[0013] Preferably, both of the brackets are provided with rotating seats, a first rod and a second rod that are hinged to each other. One end of the first rod is hinged to the rotating seat, and one end of the second rod is rotatably connected to the laser lens.

[0014] The rotating seat is arranged at the connection between the bracket and the pressing mechanism and is slidably connected to the pressing mechanism for rotating the bracket in the axial direction of the rotating seat. One end of the first rod is hinged to one end of the second rod, and the other opposite end of the first rod is hinged to one side of the rotating seat for rotating the bracket in a plane. The laser lens is connected to the end of the second rod far from the first rod and rotates along the axial direction of the second rod for adjusting the irradiation angle of the laser in a plane. Under the rotational adjustment of the rotating seat, the first rod, the second rod and the laser lens itself, the laser lens can change the irradiation angle in any plane in space, so as to flexibly change the irradiation area corresponding to the moving upper fixture and achieve continuous heating.

[0015] Preferably, the pressing mechanism includes a press and a mounting punch. The mounting punch is arranged on the press, and the upper fixture and a rotating mechanism connecting the upper fixture are fixed on the mounting punch.

[0016] The press is drivingly connected to the mounting punch, so that the mounting punch slides on the press, which can drive the rotating mechanism and the upper fixture to move vertically, and at the same time transfer the vertical pressure through the mounting punch to apply pressure to the amorphous alloy during the connection process.

[0017] Preferably, guide rails are installed on the press, and the laser heating mechanism is slidably arranged on the guide rails.

[0018] A plurality of guide rails are vertically arranged on the outside of the press. The bottom of the laser heating mechanism is set to a structure with adjustable tightness. By adjusting the tightness and sliding on the guide rails, the height of the laser heating mechanism can be set so that its output end matches the height after the upper fixture moves.

[0019] Preferably, both of the rotating mechanisms are provided with a driving motor and a speed reducer. The two driving motors are respectively drivingly connected to the two speed reducers, and the two speed reducers respectively fix the upper fixture and the lower fixture.

[0020] The speed reducer connects the upper fixture or the lower fixture with the pressurizing mechanism, and the driving motor is arranged close to the speed reducer. The speed reducer and the driving motor above the pressurizing mechanism drive the upper fixture to perform a rotating motion, and the speed reducer and the driving motor below drive the lower fixture to perform a rotating motion. With the aid of the speed reducer, the driving motor can make the upper fixture or the lower fixture rotate at a low speed, changing the frictional force of the amorphous alloy connection surface. In addition, the speed reducer can bear the pressure of the pressurizing mechanism during the welding process, so the speed reducer is not affected by the extrusion pressure.

[0021] Preferably, the connecting device further includes a gas transmission mechanism, and the gas transmission mechanism includes a nozzle and a gas tank. The nozzle is communicated with the gas tank, and the nozzle is located outside the upper fixture or the lower fixture.

[0022] The gas tank can be used to store inert gases such as argon, nitrogen or helium. The nozzle is used to spray the above-mentioned inert gases to create an inert atmosphere environment during the connection of the amorphous alloy, isolate other gases in the environment to protect the connection environment, and avoid the reaction of the amorphous alloy in the connection area with oxygen, etc., so as to avoid the appearance of pores and oxidation, resulting in a decline in the connection quality.

[0023] The second object of the present invention is to provide a laser-assisted amorphous alloy connection method, which uses the laser-assisted amorphous alloy connection device described in any one of the above, and includes the following steps:

[0024] Mount two pieces of amorphous alloy on the upper fixture and the lower fixture respectively;

[0025] Introduce inert gas between the upper fixture and the lower fixture;

[0026] Use the rotating mechanism to drive the upper fixture and the lower fixture to rotate;

[0027] The laser heating mechanism synchronously irradiates the two pieces of amorphous alloy to raise the surface temperature to the supercooled liquid phase region;

[0028] Install the pressure head to drive the upper fixture to press down, so that the two pieces of amorphous alloy are mutually extruded, and welding is completed under the action of the temperature, pressure or rotational pressure friction of the laser irradiation to obtain a formed bulk amorphous alloy.

[0029] In the above steps, after the amorphous alloy is clamped on the upper fixture and the lower fixture, a certain distance should be maintained to reserve enough laser incident space for the laser heating mechanism; the rotating mechanism can be selectively kept on, controlled to decelerate or stop rotating after the temperature of the amorphous alloy connection surface reaches the supercooled liquid phase region according to specific connection requirements; when the pressurizing mechanism drives the upper fixture to press down, it should move quickly to avoid excessive heat loss on the connection surface during the movement, and ensure that the amorphous alloy connection surface is connected when it is in a good fluid state; during the connection, the laser continuously irradiates to maintain the temperature and ensure the softening of the connection surface.

[0030] Preferably, the upper fixture and the lower fixture rotate in opposite directions.

[0031] The friction force formed by the amorphous alloy joint surfaces rotating in opposite directions is greater, which can promote intermolecular movement and is conducive to the flow and fusion of the joint surfaces.

[0032] The specific implementation process is as follows: First, two pieces of amorphous alloy are respectively installed on the bottom surface of the upper fixture and the top surface of the lower fixture, and the joint surfaces of the two pieces of amorphous alloy are ensured to be aligned. Subsequently, an inert gas is introduced to create a protective atmosphere environment to prevent gas reactions from occurring. Secondly, the rotation mechanism is activated to rotate the upper fixture and the lower fixture to drive the amorphous alloy to rotate, and the laser heating mechanism is activated. The laser is obliquely irradiated on more than half of the joint surface area. Through the rotation of the amorphous alloy for dynamic radiation, the purpose of uniform heating is achieved. After the temperature of the joint surface is detected by the temperature measuring instrument and heated to the supercooled liquid phase region, the laser heating mechanism is turned off, and the pressing mechanism is activated to drive the upper fixture to press down, so that the joint surfaces of the two pieces of amorphous alloy are mutually extruded and rubbed. At this time, the laser heating mechanism is adjusted and turned on again to irradiate the joint area. Under the action of laser heating, rotational friction, and extrusion, the two pieces of amorphous alloy are fused with each other at the joint interface and finally connected into one body. At this time, the inert gas supply is stopped, and the rotation mechanism, laser heating mechanism, and pressing mechanism are turned off. The fixation of the upper fixture on the amorphous alloy is released and the upper fixture is lifted. Subsequently, the fixation of the lower fixture is released and the formed amorphous alloy is taken out. It should be noted that the above connection operation can be repeatedly implemented to obtain a bulk amorphous alloy with a target thickness.

[0033] The beneficial effects of the present invention at least include:

[0034] A laser-assisted amorphous alloy connection device provided by the present invention uses an upper fixture and a lower fixture to fix the amorphous alloy. The pressing mechanism is used to drive the upper fixture to press down, so that the distance between the upper fixture and the lower fixture is shortened and they approach each other, thereby extruding the joint surfaces of the two pieces of amorphous alloy; the rotation mechanism is used to drive the upper fixture and the lower fixture to rotate in the same or opposite directions to achieve the effect of extrusion and friction, thereby promoting connection. The laser heating mechanism is creatively used to irradiate and heat the amorphous alloy with a large-spot laser, and the dynamic radiation heating method is further used to uniformly heat the joint surface of the amorphous alloy, so that the temperature of the joint surface reaches the supercooled liquid phase region, facilitating subsequent connection. Under the action of laser heating, pressure, or rotational pressure friction, the connection strength of the amorphous alloy is high, and it can be repeatedly connected in the thickness direction and maintain high connection stability. Moreover, the laser heating efficiency is high, which can quickly raise the temperature of the amorphous alloy surface, avoiding structural relaxation, phase separation, or crystallization of the amorphous alloy caused by long-term heating, thereby ensuring the consistency of the performance of large-size surface material connection; at the same time, the laser heats the amorphous alloy externally, which can reduce the internal temperature compared with internal heating, thereby reducing the degree of matrix softening and reducing the matrix compression amount to reduce welding deformation.

[0035] The present invention also provides a laser-assisted amorphous alloy connection method, which uses the above-mentioned laser-assisted amorphous alloy connection device. During the connection of amorphous alloys, continuous laser irradiation is carried out to maintain the temperature, so that the connection surfaces of the amorphous alloys remain in a liquid state to fuse with each other. At the same time, connection is promoted by means of pressurization or pressurized rotational friction. Therefore, the prepared amorphous alloy connection is stable and no pores will appear. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of the laser-assisted amorphous alloy connection device in an embodiment of the present application;

[0037] Figure 2 is a schematic structural diagram of the bracket in an embodiment of the present application;

[0038] Figure 3 is a schematic structural diagram of the pressurizing mechanism in an embodiment of the present application;

[0039] Figure 4 is a flowchart of the laser-assisted amorphous alloy connection method in an embodiment of the present application.

[0040] REFERENCE SIGNS:

[0041] 1, upper fixture;

[0042] 2, lower fixture;

[0043] 3, pressurizing mechanism; 301, press; 3011, guide rail; 302, mounting punch;

[0044] 4, rotating mechanism; 401, drive motor; 402, speed reducer;

[0045] 5, laser heating mechanism; 501, bracket; 5011, rotating base; 5012, first support rod; 5013, second support rod; 502, laser; 503, laser lens;

[0046] 6, gas delivery mechanism; 601, nozzle; 602, gas tank;

[0047] 7, thermometer; 8, display screen; 9, controller;

[0048] 10, distance sensor; 11, pressure sensor; 12, chiller;

[0049] 13, first amorphous alloy; 14, second amorphous alloy. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention will be more thorough and complete, and the scope of the present invention can be fully conveyed to those skilled in the art.

[0051] In the description of the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", and "right" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and does not require the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0052] The terms used in the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a", "the", and "the" used in the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0053] Embodiment 1

[0054] See Figure 1 As shown, the present invention provides a laser-assisted amorphous alloy connection device, including an upper clamp 1, a lower clamp 2, and a pressurizing mechanism 3. The upper clamp 1 and the lower clamp 2 are fixed on opposite sides of the pressurizing mechanism 3, and the pressurizing mechanism 3 can drive the upper clamp 1 to move up and down. There are two rotating mechanisms 4 on the pressurizing mechanism 3, and the two rotating mechanisms 4 are respectively connected to the upper clamp 1 and the lower clamp 2. The connection device is provided with a laser heating mechanism 5, and the laser heating mechanism 5 is installed on the pressurizing mechanism 3, and the laser heating mechanism 5 has lasers 502 respectively facing the upper clamp 1 and the lower clamp 2.

[0055] Specifically, the upper clamp 1 and the lower clamp 2 are relatively arranged on the pressure mechanism 3, wherein the upper clamp 1 is driven by the pressure mechanism 3 and can move close to the lower clamp 2, while the lower clamp 2 is fixed, and the pressure mechanism 3 adopts a conventional pressure mechanism 3, and the upper clamp 1 and the lower clamp 2 are respectively fixed on the output end of the pressure mechanism 3 and the machine platform. During operation, the two amorphous alloys are respectively clamped on the two opposite sides of the upper clamp 1 and the lower clamp 2, and the upper clamp 1 is driven by the pressure mechanism 3, so that the two amorphous alloys are pressed against each other. The rotating mechanism 4 is set as a motor, which is respectively fixed on the output end and the machine platform of the pressure mechanism 3, and the upper clamp 1 and the lower clamp 2 are connected by transmission. The two rotating mechanisms 4 can drive the upper clamp 1 and the lower clamp 2 respectively, so as to rotate coaxially and can rotate in the opposite direction. Therefore, when the amorphous alloy is extruded, the two amorphous alloys will also rub against each other to promote the amorphous alloy molecules, ions or atoms to enter the molecular gap of another amorphous alloy, thereby promoting fusion connection. In addition, the connection device uses a laser heating mechanism 5 to simultaneously irradiate the amorphous alloy fixed on the upper clamp 1 and the lower clamp 2. The laser heating mechanism 5 uses a conventional laser device and is provided with a chiller 12, which can cool the body to ensure work efficiency. The laser heating mechanism 5 can irradiate the laser on more than half of the surface of the amorphous alloy, and perform dynamic radiation heating in conjunction with the rotational motion, which has the effect of rapid and uniform heating. Through laser radiation, rotational friction and extrusion, the amorphous alloy connection will be very firm, and the laser heating efficiency is high, so that the temperature of the amorphous alloy connection surface reaches the supercooled liquid phase quickly, which greatly avoids the structural relaxation, phase separation and other transformations of the amorphous alloy when heated.

[0056] See also Figure 1 As shown, the laser heating mechanism 5 includes two brackets 501 , each bracket 501 is connected to a laser lens 503 , and the laser lens 503 is connected to a laser 502 .

[0057] Specifically, one end of each of the two brackets 501 is installed on the upper and lower parts of the pressurizing mechanism 3 through bolts. The lower end of the bracket 501 installed on the upper part of the pressurizing mechanism 3 is connected to the laser lens 503, and the upper end of the bracket 501 installed on the lower part of the pressurizing mechanism 3 is connected to the laser lens 503. When the laser 502 itself has a lens, the laser 502 can be directly installed on the bracket 501. The lasers 502 on the brackets 501 face different directions. Specifically, the bracket 501 installed on the upper part of the pressurizing mechanism 3 controls the laser 502 to irradiate the bottom surface of the upper fixture 1, and the bracket 501 installed on the lower part of the pressurizing mechanism 3 controls the laser 502 to irradiate the top surface of the lower fixture 2, so as to heat the joint surfaces of the fixed amorphous alloys respectively, and synchronously and rapidly heat their joint surfaces without heating the whole of the two amorphous alloys. When using a laser 502 without a lens, the bracket 501 can be provided with a laser lens 503 at the end of the bracket 501. The laser 502 is fixed or placed separately, and the laser lens 503 is connected to the laser 502 through an optical fiber line, so as to achieve the effect of laser irradiation. Moreover, the size of the laser lens 503 can be changed according to the emission power of the laser 502, and then a large spot can be used for irradiation to accelerate the surface temperature of the amorphous alloy to reach the supercooled liquid phase region. More specifically, the laser 502 uses a continuous laser 502, and the spot size and shape of the laser can be adjusted through the laser lens 503. The spot size range is 1 - 300 mm and can be adjusted according to the size of the welded workpiece. The laser wavelength range is 405 - 1080 nm and can be specifically set according to the light absorption rate of the material.

[0058] See Figure 2 As shown, both of the two brackets 501 are provided with a rotating seat 5011, a first support rod 5012 and a second support rod 5013 that are hinged to each other. One end of the first support rod 5012 is hinged to the rotating seat 5011, and one end of the second support rod 5013 is rotatably connected to the laser lens 503.

[0059] Specifically, the rotating seat 5011 is arranged at the connection between the bracket 501 and the pressing mechanism 3 and is slidably connected to the pressing mechanism 3. It is used to rotate the bracket 501 in the axial direction of the rotating seat 5011. Specifically, the rotating seat 5011 is provided with a sliding part and a rotating part. The sliding part is cylindrical and sleeved on the strut of the pressing mechanism 3. It is fixed by inserting a screw into the sliding part and abutting against the strut. The rotating part is a cuboid and is connected to the sliding part by a rotating shaft to achieve rotation. One end of the first rod 5012 is hinged to one end of the second rod 5013, and the opposite end of the first rod 5012 is hinged to one side of the rotating seat 5011 to enable the bracket 501 to rotate in a plane. Specifically, a hinge hole is respectively opened at both ends of the first rod 5012, and a hinge hole is opened at one end of the second rod 5013. The first rod 5012 and the second rod 5013 are hinged by bolts. An installation groove is provided at one end of the second rod 5013 away from the hinge hole. The laser lens 503 is connected to the end of the second rod 5013 away from the first rod 5012. By being inserted into the installation groove provided on the second rod 5013, it can rotate along the axial direction of the second rod 5013 to adjust the irradiation angle of the laser in the plane. Under the rotation adjustment of the rotating seat 5011, the first rod 5012, the second rod 5013 and the laser lens 503 itself, the laser lens 503 can change the irradiation angle in any plane within the X, Y, Z three-axis space, so as to flexibly change the irradiation area corresponding to the moving upper fixture 1 and achieve continuous heating.

[0060] See Figure 1 , 3 As shown in, the pressing mechanism 3 includes a press 301 and a mounting punch 302. The mounting punch 302 is arranged on the press 301, and the upper fixture 1 and the rotating mechanism 4 connecting the upper fixture 1 are fixed on the mounting punch 302.

[0061] Specifically, the pressing mechanism 3 adopts a structure in which the press 301 is drivingly connected to the mounting punch 302. The press 301 adopts a hydraulic press, a pneumatic press, a crank press 301 or a screw press 301, and the applied pressure is 0 - 1000 MPa. Four struts are respectively arranged around the press 301. The mounting punch 302 is fixedly connected to the pressure column on the upper part of the press 301, and the four corners of the mounting punch 302 are penetrated by the struts of the press 301 for guiding. The rotating mechanism 4 is installed on the bottom surface of the mounting punch 302, and the upper fixture 1 is fixed at the bottom of the rotating mechanism 4. When the mounting punch 302 slides on the press 301, it can drive the rotating mechanism 4 and the upper fixture 1 to move vertically, and at the same time transmit the vertical pressure to the upper fixture 1 through the mounting punch 302 to achieve the pressing of the amorphous alloy during the connection process.

[0062] See Figure 2As shown, a guide rail 3011 is installed on the press 301 , and the laser heating mechanism 5 is slidably arranged on the guide rail 3011 .

[0063] Specifically, a plurality of guide rails 3011 are vertically arranged on the outside of the press 301. The guide rails 3011 are located on the outside of the pillars of the press 301. The laser heating mechanism 5 slides on the guide rails 3011 through a sliding part. The height of the laser heating mechanism 5 can be set by adjusting the screw on the sliding part so that the laser lens 503 or the laser 502 matches the height after the clamp 1 moves. Then, the rotation amplitude of the first support rod 5012, the second support rod 5013 and the rotating part is adjusted so that the laser can be accurately irradiated on the connection area.

[0064] See also Figure 1 As shown, the two rotating mechanisms 4 are each provided with a driving motor 401 and a reducer 402 , the two driving motors 401 are respectively connected to the two reducers 402 , and the two reducers 402 respectively fix the upper fixture 1 and the lower fixture 2 .

[0065] Specifically, the reducer 402 connects the upper clamp 1 or the lower clamp 2 with the pressurizing mechanism 3, specifically, a reducer 402 is arranged on the top of the upper clamp 1, a reducer 402 is arranged on the bottom of the lower clamp 2, and two drive motors 401 are arranged adjacent to the reducer 402. The reducer 402 and the drive motor 401 on the upper part of the pressurizing mechanism 3 drive the upper clamp 1 to rotate, and the reducer 402 and the drive motor 401 on the lower part drive the lower clamp 2 to rotate, wherein with the help of the reducer 402, the drive motor 401 can make the upper clamp 1 or the lower clamp 2 rotate at a low speed, changing the friction force of the amorphous alloy connection surface. In addition, the reducer 402 can withstand the pressure of the pressurizing mechanism 3 during welding, so the reducer 402 is not affected by the extrusion pressure.

[0066] See also Figure 1 As shown, the connecting device further includes a gas delivery mechanism 6 , which includes a nozzle 601 and a gas tank 602 , the nozzle 601 is connected to the gas tank 602 , and the nozzle 601 is located at the periphery of the upper clamp 1 or the lower clamp 2 .

[0067] Specifically, the gas delivery mechanism 6 specifically adopts a gas tank 602, a nozzle 601, a bracket 501, an automatic gas valve and a connecting pipe. The gas tank 602 can be used to store inert gases such as argon, nitrogen or helium. The bracket 501 fixes the gas tank 602 to keep it stably placed. The automatic gas valve is used to control the switch of the connecting pipe connecting the gas tank 602 and the nozzle 601. The nozzle 601 is used to spray the above-mentioned inert gas to create an inert atmosphere environment when connecting the amorphous alloy, isolate other gases in the environment to protect the connection environment, and prevent the amorphous alloy in the connection area from reacting with oxygen, etc., thereby avoiding the occurrence of pores and oxidation, which causes the connection quality to deteriorate.

[0068] Example 2

[0069] See Figure 1 As shown, this embodiment is improved on the basis of Embodiment 1, and provides a laser-assisted amorphous alloy connection device. The connection device further includes a controller 9, a thermometer 7 and a display screen 8. The controller 9 is electrically connected to the thermometer 7, the display screen 8, the pressurizing mechanism 3, the rotating mechanism 4, the laser heating mechanism 5 and the automatic air valve. The thermometer 7 is fixed on the pressurizing mechanism 3, and the display screen 8 is installed on the top of the pressurizing mechanism 3.

[0070] Specifically, the thermometer 7 adopts an infrared thermometer 7, which is fixed on the pillar of the pressurizing mechanism 3, can detect the temperature change of the amorphous alloy connection surface in real time, and feedback the real-time temperature to the controller 9; the display screen 8 can display the real-time temperature through the data transmitted by the controller 9, which is convenient for the operator to view.

[0071] See Figure 1 As shown, a distance sensor 10 and a pressure sensor 11 are further connected to the top of the upper fixture 1.

[0072] The distance sensor 10 and the pressure sensor 11 are fixed together between the upper fixture 1 and the reducer 402. The distance sensor 10 can detect the moving distance of the upper fixture 1 during the connection process in real time, and the pressure sensor 11 can monitor the pressure of the amorphous alloy connection surface in real time. The distance sensor 10 and the pressure sensor 11 are also electrically connected to the display screen 8. Therefore, the moving distance data of the upper fixture 1 and the pressure data of the connection surface can be displayed on the display screen 8.

[0073] Embodiment 3

[0074] This embodiment provides a laser-assisted amorphous alloy connection method formed by using any of the above laser-assisted amorphous alloy connection devices, including the following steps:

[0075] S1. Install two pieces of amorphous alloy on the upper fixture 1 and the lower fixture 2 respectively;

[0076] S2. Pass an inert gas between the upper fixture 1 and the lower fixture 2;

[0077] S3. Drive the upper fixture 1 and the lower fixture 2 to rotate by using the rotating mechanism 4;

[0078] S4. The laser heating mechanism 5 synchronously irradiates the two pieces of amorphous alloy to raise the surface temperature to the supercooled liquid region;

[0079] S5. According to the specific workpiece welding conditions, select to keep the rotating mechanism 4 on, control deceleration or turn it off;

[0080] S6. Install the pressing head 302 to drive the upper fixture 1 to press down, so that the two pieces of amorphous alloy are extruded against each other, and welding is completed under the action of the temperature, pressure or rotational pressure friction of the laser irradiation to obtain a formed bulk amorphous alloy.

[0081] "Supercooled liquid region" refers to the state where, during the cooling process, the temperature of a substance is lower than its solidification temperature but still remains in a liquid state. This phenomenon usually occurs in the amorphous forms of pure substances or alloys, especially in amorphous alloys formed under rapid cooling conditions.

[0082] Specifically, in the above steps, after clamping the amorphous alloy, the upper fixture 1 and the lower fixture 2 should maintain a certain distance to reserve sufficient laser incident space for the laser heating mechanism 5. This distance is 10 - 100 mm; the inert gas is a combined gas of one or more of argon, nitrogen, helium, neon, krypton, and xenon; the rotating mechanism 4 drives the upper fixture 1 to rotate clockwise and the lower fixture 2 to rotate counterclockwise, with a rotation speed of 0 - 3000 rpm. And the rotating mechanism 4 can, according to specific connection requirements, selectively maintain rotation, control deceleration, or stop rotating after the temperature of the amorphous alloy connection surface reaches the supercooled liquid region. Among them, the rotating mechanism 4 can perform bilateral or unilateral rotation, so as to perform bilateral same-speed or unilateral low-speed rotation; the pressure range of the pressurizing mechanism 3 is 0 - 1000 MPa. When the pressurizing mechanism 3 drives the upper fixture 1 to press down, it should move quickly to avoid excessive heat loss at the connection surface during the movement, and ensure that the connection is carried out when the connection surface of the amorphous alloy is in a good fluid state; during connection, the laser continuously irradiates to maintain the temperature and ensure that the connection surface softens.

[0083] Furthermore, the upper fixture 1 and the lower fixture 2 rotate in opposite directions.

[0084] Specifically, the friction force formed by the connection surfaces of the amorphous alloy rotating in opposite directions is greater, which can promote intermolecular movement and is beneficial to the flow and fusion of the connection surface.

[0085] Furthermore, before step S1, it also includes polishing and cleaning the connection surface of the amorphous alloy and processing the surface micro- and nano-structures.

[0086] Specifically, the surface micro- and nano-structures are patterned micro-scale grooves and nano-structure composite surfaces, which are used to improve the surface light absorption rate and promote the interfacial flow connection during welding. Polishing and cleaning are beneficial for subsequent surface processing of micro- and nano-structures.

[0087] This solution can process and weld workpieces of different shapes and sizes, and realize the layer-by-layer preparation of large-size zirconium-based amorphous alloy blocks and complex parts with welding surfaces such as rings. To facilitate the understanding of this solution by those skilled in the art, the following processing examples are provided:

[0088] The first amorphous alloy 13 as described below is clamped on the lower fixture 2, and the second amorphous alloy 14 is clamped on the upper fixture 1.

[0089] Processing Example 1

[0090] Combined heating is carried out by laser irradiation with a 25-mm light spot on both the upper and lower sides and bilateral rotational motion, and then pressure welding is used. Blue light with a wavelength of 450 nm and a high light absorption rate is adopted. Both the first amorphous alloy 13 and the second amorphous alloy 14 are amorphous wafers with a diameter of 40 mm and a thickness of 2.5 mm, and the components are all Zr 45.7 Ti 28.7 Cu 21.5 Ni 2.1 Al 1.6 。

[0091] S1. Clamp the amorphous alloys to the lower fixture 2 and the upper fixture 1 and move to adjust the two amorphous wafers so that the distance between them is 30 mm; S2. Open the gas supply mechanism 6 and introduce inert gas; S3. Open the two drive motors 401, drive the first amorphous alloy 13 to rotate forward at 200 rpm, and drive the second amorphous alloy 14 to rotate backward at 200 rpm; S4. Turn on the laser 502 and the thermometer 7, and the laser obliquely irradiates one side with a radius of 20 mm on the surface of the amorphous alloy, and heat the complete welding surface of the amorphous alloy to the supercooled liquid region through rotational motion; S5. Stop the two drive motors 401, the press 301 quickly presses down and then continues to apply pressure to the second amorphous alloy 14 so that the connecting surfaces of the first amorphous alloy 13 and the second amorphous alloy 14 are squeezed together, where the applied pressure is 10 - 50 MPa, and the contact surfaces of the two amorphous alloys are connected and formed under the action of laser irradiation and pressure; S6. After welding is completed, turn off the press 301 and the laser 502, the upper fixture 1 moves upward, and turn off the gas supply mechanism 6; S7. Repeat the above steps to obtain a bulk amorphous alloy with an increased thickness, and continue to repeat the above steps until a bulk amorphous alloy with the target thickness is obtained.

[0092] Processing Example 2

[0093] Dynamic irradiation is carried out by combined rotation of lasers with 30-mm light spots on both the upper and lower sides, and bilateral rotary pressure friction welding is used. Blue light with a wavelength of 450 nm and a high light absorption rate is adopted. Both the first amorphous alloy 13 and the second amorphous alloy 14 are amorphous rings with an outer diameter of 50 mm, an inner diameter of 30 mm, and a thickness of 2.5 mm, and the components are all Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 Be 22.5 。

[0094] The amorphous alloy is clamped to the lower fixture 2 and the upper fixture 1, and the two amorphous rings are moved and adjusted so that the distance between them is 50 mm; S2: The gas supply mechanism 6 is turned on to introduce inert gas; S3: The two driving motors 401 are turned on to drive the first amorphous alloy 13 to rotate forward at 300 rpm and drive the second amorphous alloy 14 to rotate backward at 300 rpm; S4: The laser 502 and the thermometer 7 are turned on. The laser irradiates obliquely one side of the amorphous ring surface with a radius of 25 mm, and the complete welding surface of the amorphous alloy is heated to the supercooled liquid region through rotational motion; S5: The press 301 quickly presses down, and then the connecting surfaces of the first amorphous alloy 13 and the second amorphous alloy 14 are subjected to rotational friction and extrusion, and the applied pressure is 0.1 - 10 MPa. After the first amorphous alloy 13 and the second amorphous alloy 14 come into contact with each other, it continues to press down by 0.5 mm. Under the action of the temperature of laser irradiation, rotational friction and pressure, the connection and forming of the contact surfaces of the two amorphous alloys are realized; S6: After welding is completed, the two driving motors 401, the press 301, and the laser 502 are turned off, the upper fixture 1 moves upward, and the gas supply mechanism 6 is turned off; S7: Repeat the above steps to obtain a bulk amorphous alloy with an increased thickness. Continue to repeat the above steps until a bulk amorphous alloy with the target thickness is obtained.

[0095] Processing Example 3

[0096] A combined system of irradiating with a laser having a 10 mm spot on both the upper and lower sides, fixing the upper fixture 1 and applying rotational pressure friction on one side of the lower fixture 2 is adopted. Blue light with a wavelength of 450 nm having a high light absorption rate is used. The first amorphous alloy 13 is an amorphous rod with a diameter of 8 mm and a length of 50 mm, and the second amorphous alloy 14 is an amorphous gear sheet with a major diameter of 35 mm and a thickness of 2.5 mm. The amorphous welding surface is processed with micro- and nano-structures by composite laser processing, and the components are all Zr 45.7 Ti 28.7 Cu 21.5 Ni 2.1 Al 1.6 。

[0097] S1. Clamp the amorphous alloy to the lower fixture 2 and the upper fixture 1, and move and adjust the two amorphous alloys to make the distance between them 20 mm; S2. Turn on the gas supply mechanism 6 and introduce inert gas; S3. Turn on the two drive motors 401 to drive the first amorphous alloy 13 to rotate and make a relative rotational movement with the second amorphous alloy 14, and the rotational speeds are both 300 - 800 rpm; S4. Turn on the laser 502 and the thermometer 7. The laser irradiates the surface of the amorphous alloy obliquely and heats the two welding surfaces of the amorphous alloy to the supercooled liquid region, and stop the drive motor 401 of the second amorphous alloy 14; S5. The press 301 applies pressure to the second amorphous alloy 14 to press the joint surface of the second amorphous alloy 14 and the first amorphous alloy 13 together, and they rub and plastically flow relative to each other under the action of rotation, where the applied pressure is 1 - 10 MPa, and the connection of the contact surfaces of the two amorphous alloys is formed under the action of the temperature, friction and pressure of laser irradiation; S6. After welding is completed, turn off the drive motor 401 of the first amorphous alloy 13, the press 301 and the laser 502, move the upper fixture 1 upward, and turn off the gas supply mechanism 6; S7. Repeat the above steps to obtain a bulk amorphous alloy with an increased thickness. Continue to repeat the above steps until a bulk amorphous alloy with the target thickness is obtained.

[0098] Processing Example 4

[0099] The connection system adopts a combined system of laser irradiation with a 30 - mm spot on both the upper and lower sides, unilateral fixation of the upper fixture 1 and unilateral low - speed rotation and extrusion friction of the lower fixture 2. It uses blue light with a wavelength of 450 nm with a high light absorption rate. Both the first amorphous alloy 13 and the second amorphous alloy 14 are amorphous wafers with a diameter of 25 mm and a thickness of 2.5 mm. The micro - and nano - structures are processed on the amorphous surface by composite laser, and the components are both Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 Be 22.5 .

[0100] S1. Clamp the amorphous alloy to the lower fixture 2 and the upper fixture 1, and move and adjust the two amorphous wafers so that the distance between them is 30 mm; S2. Turn on the gas supply mechanism 6 and introduce inert gas; S3. Turn on the two drive motors 401, drive the first amorphous alloy 13 to rotate forward at 200 rpm, and drive the second amorphous alloy 14 to rotate backward at 200 rpm; S4. Turn on the laser 502 and the temperature measuring instrument 7. The laser irradiates the surface of the amorphous alloy obliquely and heats the two welding surfaces of the amorphous alloy to the supercooled liquid region. Stop the drive motor 401 of the second amorphous alloy 14 and reduce the rotation speed of the first amorphous alloy 13 to 1 - 5 rpm; S5. The press 301 applies pressure to the second amorphous alloy 14 so that the connection surface of the second amorphous alloy 14 and the first amorphous alloy 13 are pressed together and move relative to each other under the action of large torque and low-speed rotation. The applied pressure is 10 - 50 MPa, and the connection of the contact surfaces of the two amorphous alloys is formed under the action of laser irradiation, friction and pressure; S6. After welding is completed, turn off the drive motor 401 of the first amorphous alloy 13, the press 301 and the laser 502. The upper fixture 1 moves upward and the gas supply mechanism 6 is turned off; S7. Repeat the above steps to obtain a bulk amorphous alloy with an increased thickness. Continue to repeat the above steps until a bulk amorphous alloy with the target thickness is obtained.

[0101] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A laser-assisted amorphous alloy joining device, comprising an upper clamp (1), a lower clamp (2) and a pressurizing mechanism (3), wherein the upper clamp (1) and the lower clamp (2) are fixed on opposite sides of the pressurizing mechanism (3), and the pressurizing mechanism (3) can drive the upper clamp (1) to move up and down; the pressurizing mechanism (3) is provided with two rotating mechanisms (4), and the two rotating mechanisms (4) are respectively connected to the upper clamp (1) and the lower clamp (2), characterized in that: The connecting device is provided with a laser heating mechanism (5), the laser heating mechanism (5) is installed on the pressurizing mechanism (3), and the laser heating mechanism (5) has a laser (502) facing the upper clamp (1) and the lower clamp (2) respectively.

2. The laser-assisted amorphous alloy connection device according to claim 1, wherein: The laser heating mechanism (5) comprises two brackets (501), and each bracket (501) is connected to the laser (502).

3. The laser-assisted amorphous alloy connection device according to claim 1, characterized in that: The laser heating mechanism (5) comprises two brackets (501), each of the brackets (501) is connected to a laser lens (503), and the laser lens (503) is connected to the laser (502).

4. The laser-assisted amorphous alloy connection device according to claim 3, characterized in that: The two brackets (501) are each provided with a rotating seat (5011), a first support rod (5012) and a second support rod (5013) which are hinged to each other, one end of the first support rod (5012) is hinged to the rotating seat (5011), and one end of the second support rod (5013) is rotatably connected to the laser lens (503).

5. The laser-assisted amorphous alloy connection device according to any one of claims 1-4, characterized in that: The pressurizing mechanism (3) comprises a press machine (301) and an installation press head (302), wherein the installation press head (302) is arranged on the press machine (301), and the upper clamp (1) and a rotating mechanism (4) connected to the upper clamp (1) are fixed on the installation press head (302).

6. The laser-assisted amorphous alloy connection device according to claim 5, wherein: A guide rail (3011) is installed on the press machine (301), and the laser heating mechanism (5) is slidably arranged on the guide rail (3011).

7. The laser-assisted amorphous alloy connection device according to claim 1, characterized in that: The two rotating mechanisms (4) are each provided with a driving motor (401) and a reducer (402); the two driving motors (401) are respectively connected to the two reducers (402); and the two reducers (402) respectively fix the upper clamp (1) and the lower clamp (2).

8. The laser-assisted amorphous alloy connection device according to claim 1, wherein: The connecting device further comprises a gas delivery mechanism (6), wherein the gas delivery mechanism (6) comprises a nozzle (601) and a gas tank (602), wherein the nozzle (601) is connected to the gas tank (602), and the nozzle (601) is located at the periphery of the upper clamp (1) or the lower clamp (2).

9. A laser-assisted amorphous alloy joining method, characterized in that, The laser-assisted amorphous alloy connection device according to any one of claims 1 to 8 comprises: Mounting two pieces of amorphous alloy on an upper fixture (1) and a lower fixture (2) respectively; Inert gas is introduced between the upper fixture (1) and the lower fixture (2); The upper clamp (1) and the lower clamp (2) are driven to rotate by a rotating mechanism (4); The laser heating mechanism (5) irradiates the two amorphous alloys synchronously to raise the surface temperature to the supercooled liquid phase region; The installation indenter (302) drives the upper fixture (1) to press downwards, so that two amorphous alloys are mutually extruded, and welding is completed under the action of temperature, pressure or rotational pressure friction of laser irradiation to obtain a formed bulk amorphous alloy.

10. The laser-assisted amorphous alloy joining method according to claim 9, wherein: The rotation directions of the upper fixture (1) and the lower fixture (2) are opposite.

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