Multi-ultrasonic coupling assisted rolling composite device and method for metal laminated composite material

Abstract

The application discloses a kind of metal layered composite multi-ultrasonic coupling auxiliary rolling composite equipment and method, belong to metal layered composite preparation technical field.The equipment of the present application includes three parts of rolling mechanism, ultrasonic vibration system and heating system.Among them, the ultrasonic vibration system is composed of 2-6 sets of ultrasonic vibration mechanisms controlled by an ultrasonic generator to ensure constant phase difference;2-6 sets of ultrasonic vibration mechanisms are respectively installed at the shaft end of the roll shaft of the first work roll and the second work roll or in front of or behind the rolling direction;ultrasonic generator is used to drive 2-6 sets of ultrasonic vibration mechanisms to output ultrasonic waves with different phases, to make up for the disadvantages of uneven energy distribution and weak energy of single ultrasonic wave in the roll shaft direction, to solve the problems of thickness and width limitation, discontinuous composite and the like in ultrasonic assisted rolling composite.

Description

Technical Field

[0001] This invention belongs to the field of metal layered composite material preparation technology, specifically relating to a multi-ultrasonic coupled assisted rolling composite equipment and method for metal layered composite materials. Background Technology

[0002] Metal layered composites are made of two or more component metal materials and possess superior comprehensive properties that cannot be achieved by a single metal material. They have been widely used in aerospace, rail transportation, petrochemical, and marine shipbuilding industries. Rolling composites, due to their short process and high efficiency, are particularly suitable for the continuous and mass production of metal layered composites. Rolling composites of metal layered composites are solid-solid composites under thermo-mechanical coupling. First, the oxide film and hardened layer on the surfaces to be composited need to be broken down under pressure, allowing fresh metals to come into contact; then, heat is applied to achieve a strong metallurgical bond at the interface. However, traditional rolling composite methods often result in insufficient breakage of the oxide film and hardened layer at the interface of the metal layered composites, and the heating and holding process can cause a large amount of oxide film to form on the surface to be composited, severely affecting the interfacial bonding quality of the metal layered composites.

[0003] Ultrasonic-assisted rolling composite technology introduces ultrasonic energy or mechanical energy into the rolling deformation zone through ultrasonic vibration equipment to assist in the forming of materials. It features low forming force, high surface quality, and high interfacial bonding quality of the prepared metal layered composite materials.

[0004] Although this method of using ultrasonic energy to assist forming reduces the deformation resistance of the material to some extent, promotes the breaking of oxide films and hardened layers, and improves the interfacial bonding quality of metal layered composite materials, the heat generated by this method is relatively small, far less efficient than the heat generation efficiency of using ultrasonic mechanical energy to drive periodic friction between the rolls and / or the base plate. Therefore, when using the above-mentioned patented method to prepare metal layered composite materials, it is still necessary to heat the metal laminated billet to a high temperature before rolling and then hold it at that temperature before rolling and composite. This will introduce a large amount of oxide film into the interface to be composited, hindering the formation of the metallurgical bonding interface. Furthermore, the efficiency of using ultrasonic energy to break down oxide films and hardened layers is also not as high as the efficiency of using ultrasonic mechanical energy to drive periodic friction between the rolls and / or the base plate.

[0005] Therefore, there is an urgent need to develop an ultrasonic-assisted rolling composite equipment and method that can achieve millimeter-thickness, wide-width, and continuous interfacial composite preparation of metal layered composite materials, in order to meet the preparation and processing requirements of high-quality metal layered composite materials, which is of great significance. Summary of the Invention

[0006] This invention provides a multi-ultrasonic coupling assisted rolling composite equipment and method for metal layered composite materials. It utilizes 2 to 6 sets of ultrasonic vibration mechanisms to output 2 to 6 ultrasonic waves, which can compensate for the defects of uneven energy distribution and weak energy of a single ultrasonic wave in the direction of the roll axis. This solves the problems of limited thickness and width and discontinuous interface composite in traditional ultrasonic assisted rolling composite.

[0007] According to a first aspect of the present invention, a multi-ultrasonic coupling assisted rolling composite equipment for metal layered composite materials is provided, comprising three parts: a rolling mechanism, an ultrasonic vibration system, and a heating system. The ultrasonic vibration system consists of an ultrasonic generator controlling 2 to 6 sets of ultrasonic vibration mechanisms. These 2 to 6 sets of ultrasonic vibration mechanisms are respectively installed at the ends of the roll shafts of the first and second work rolls, or in front of or behind them in the rolling direction. The multiple sets of ultrasonic vibration mechanisms drive the work rolls to generate ultrasonic vibrations with a phase difference of 0 to 360°. The heating system is installed at the front end of the billet feeding section of the rolling mechanism.

[0008] The rolling mechanism includes a base plate, a mill stand, a cover plate, a pressing device, a first work roll, a second work roll, a universal telescopic coupling, a rotary bearing, a first bearing seat, a second bearing seat, a gear set, a gear set support, a first gear, a second gear, a servo motor, a balance spring set, a balance spring set guide rod, a gear shaft, and a balance spring seat. The mill stand and gear set support are mounted on the base plate. The servo motor is mounted below the gear set support. The rolling torque of the first and second work rolls is provided by the servo motor and distributed to the first and second gears via the gear set. The first and second gears of the gear set are mounted on the gear set support via the rotary bearing. The two gear shafts are connected to the first and second work rolls respectively via the universal telescopic coupling, thereby distributing the rolling torque... The driving torque is transmitted to the first work roll and the second work roll; the first work roll and the second work roll are respectively mounted in the first bearing seat and the second bearing seat through the rotating bearing, the first bearing seat is slidably mounted on the side of the mill stand, and the second bearing seat is fixedly mounted below the mill stand; the pressing device is mounted on the cover plate by means of threads, and the roll gap between the first work roll and the second work roll can be adjusted by the amount of thread advance; the balance spring seats are respectively fixedly mounted on both sides of the mill stand, and the balance spring group is mounted between the balance spring seat and the reserved guide hole of the first bearing seat through the balance spring group guide rod, and the self-weight of the first work roll can be balanced by adjusting the balance spring group guide rod, which facilitates the adjustment of the resonance between the ultrasonic vibration mechanism and the first work roll and the second work roll.

[0009] The heating system includes a heating pressure adjusting bolt, a heating pressure spring, a heating pressure bracket, a first heating control system, a second heating control system, a first heating plate, and a second heating plate. The first and second heating plates each have built-in induction heating coils. The first and second heating plates can be adjusted to achieve different temperatures by regulating the first and second heating control systems. The first and second heating plates are slidably mounted on the mill stand. Two heating pressure brackets are fixedly mounted on the upper and lower sides of the roll gap between the first and second work rolls. The heating pressure adjusting bolt is threaded onto the two heating pressure brackets and is used to adjust the heating pressure spring, ensuring that the first and second heating plates remain in contact with the substrate and coating material during rolling to guarantee efficient heat transfer.

[0010] The ultrasonic vibration system consists of an ultrasonic generator and 2-6 sets of ultrasonic vibration mechanisms. The ultrasonic generator controls the 2-6 sets of ultrasonic vibration mechanisms to output 2-6 lines of ultrasonic waves with different phases to ensure a constant phase difference. Each ultrasonic vibration mechanism consists of an ultrasonic amplitude transformer and an ultrasonic transducer. The ultrasonic amplitude transformer includes a first ultrasonic amplitude transformer and a second ultrasonic amplitude transformer. The ultrasonic transducer includes a first ultrasonic transducer and a second ultrasonic transducer. The first ultrasonic amplitude transformer is fixedly connected to the first ultrasonic transducer, and the second ultrasonic amplitude transformer is fixedly connected to the second ultrasonic transducer. The first ultrasonic amplitude transformer and the first ultrasonic transducer are fixedly mounted on the shaft end of the second working roller, and the second ultrasonic amplitude transformer and the second ultrasonic transducer are fixedly mounted on the shaft end of the first working roller, driving the first and second working rollers to resonate with the ultrasonic vibration mechanism. Figure 1 As shown.

[0011] Furthermore, the ultrasonic vibration system is installed in front of or behind the first and / or second work rolls in the rolling direction, such as... Figure 2 As shown, the first work roll and / or the second work roll are driven to periodically shift their positions along the rolling direction, thereby introducing frictional heat into the deformation zone and promoting the formation of the metallurgical bonding interface.

[0012] Furthermore, the mill stand is provided with a guide device that cooperates with the first bearing seat, for adjusting the roll gap between the first work roll and the second work roll.

[0013] Furthermore, the gap adjustment range between the first working roller and the second working roller is less than the maximum extension of the universal telescopic coupling, so as to ensure effective connection between the first working roller and the second working roller and the two gear shafts respectively.

[0014] Furthermore, the surfaces of the first working roll and the second working roll are processed into rough surfaces to increase the coefficient of friction between the first working roll and the second working roll and the substrate and the coating, which is beneficial to generate effective relative misalignment between the substrate and the coating.

[0015] Furthermore, the connecting lines between the two ultrasonic vibration mechanisms and the ultrasonic generator are all connected by brushes to avoid wire entanglement caused by the rotation of the first working roller and the second working roller.

[0016] Furthermore, the front ends of the first heating plate and the second heating plate are provided with rounded chamfers to facilitate feeding the metal stacked billet into the roll gap between the first work roll and the second work roll.

[0017] According to a second aspect of the technical solution of the present invention, a multi-ultrasonic coupling assisted rolling composite method using the above-mentioned multi-ultrasonic coupling assisted rolling composite equipment for metal layered composite materials is also provided, the specific steps of which are as follows:

[0018] Step 1: Adjust the pressing device according to the critical pressing amount of the metal laminated billet to change the roll gap between the first work roll and the second work roll;

[0019] Step 2: Adjust the first heating control system and the second heating control system as needed to heat the first heating plate and the second heating plate to the required temperature respectively;

[0020] Step 3: Start the servo motor and control the rotation speed of the first and second work rollers through a computer program, so that the first and second work rollers rotate at a speed of v. i The speed of rotation is stable;

[0021] Step 4: Adjust the ultrasonic generator so that the first ultrasonic vibration mechanism operates at f i frequency (f) i The frequency adjustment range is 1 to 50 kHz) and the initial phase φ = i (the adjustment range of i is 0 to 360°) resonate with the second working roller, so that the second set of ultrasonic vibration mechanisms resonates with the second working roller at f i The frequency and initial phase φ = i + 90° resonate with the first working roller;

[0022] Step 5: When the rotation of the first working roll and the second working roll and the ultrasonic vibration of the first working roll and the second working roll are stable and the temperature of the first heating plate and the second heating plate reaches the preset temperature, the surface-treated metal laminated billet is fed into the roll gap between the first working roll and the second working roll.

[0023] Step 6: At rolling speed vi The first set of ultrasonic vibration mechanisms has a vibration frequency f. i and the initial phase φ = i and the vibration frequency f of the second ultrasonic vibration mechanism i Under the condition of initial phase φ=i+90°, the metal laminated billet is subjected to multi-ultrasonic coupled vibration rolling composite to obtain a high-quality metal layered composite material with strong metallurgical bonding at the composite interface.

[0024] Furthermore, the metal layered composite material is subjected to 1 to 10 subsequent composite rolling processes as needed.

[0025] The beneficial effects of this invention are:

[0026] 1. The equipment of the present invention can compensate for the shortcomings of uneven energy distribution and weak energy of single ultrasonic waves by applying ultrasonic waves of the same frequency but different phase differences to the first working roll and the second working roll respectively. It can realize the preparation of composite metal layered composite materials with a thickness of more than millimeters, a wide width and continuous interface, which greatly expands the application scope of ultrasonic vibration assisted rolling composite technology.

[0027] 2. The device of the present invention uses an ultrasonic generator to control 2 to 6 sets of ultrasonic vibration mechanisms, which can precisely control the phase difference of multiple waves, thereby realizing the superposition of the energy of multiple waves, and thus realizing the continuous and efficient preparation of composite metal layered composite materials with a thickness of more than millimeters, a wide amplitude and a continuous interface.

[0028] 3. The method of the present invention has simple procedures, is easy to implement, has high production efficiency and low cost, and is particularly helpful for the continuous preparation of high-quality metal layered composite materials with a thickness of more than millimeters, a wide width, continuous interface and high bonding strength, low internal residual stress, and no anisotropy. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the multi-ultrasonic coupling assisted rolling composite equipment that applies ultrasonic vibration to the end of the roll shaft according to the present invention.

[0031] Figure 2 This is a schematic diagram of the ultrasonic vibration mechanism of the multi-ultrasonic coupled assisted rolling composite equipment of the present invention, which applies ultrasonic vibration to the roll shaft parallel to the rolling direction.

[0032] Figure 3 This is a front view of the multi-ultrasonic coupled assisted rolling composite device that applies ultrasonic vibration to the end of the roll shaft according to the present invention.

[0033] Figure 4 This is a side view of the multi-ultrasonic coupled assisted rolling composite device that applies ultrasonic vibration to the end of the roll shaft according to the present invention.

[0034] Figure 5 This is a top view of the multi-ultrasonic coupled assisted rolling composite device that applies ultrasonic vibration to the end of the roll shaft according to the present invention.

[0035] Figure 6 This is a cross-sectional view along AA of the multi-ultrasonic coupling assisted rolling composite equipment that applies ultrasonic vibration to the end of the roll shaft according to the present invention.

[0036] Among them, 1-base plate; 2-rolling mill stand; 3-first ultrasonic transducer; 4-first ultrasonic amplitude transformer; 5-second ultrasonic transducer; 6-second ultrasonic amplitude transformer; 7-cover plate; 8-pressing device; 9-first work roll; 10-second work roll; 11-universal telescopic coupling; 12-second bearing seat; 13-gear set bracket; 14-first gear; 15-second gear; 16-servo motor; 17-balance spring set; 18-balance spring set guide rod; 19-gear shaft; 20-ultrasonic generator; 21-heating pressure adjusting bolt; 22-heating pressure spring; 23-heating pressure bracket; 24-second heating plate; 25-bill; 26-first heating plate; 27-balance spring seat; 28-first bearing seat. Detailed Implementation

[0037] The present invention will be described in detail below with reference to the embodiments. It should be noted that the embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments based on the above-described invention.

[0038] To make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1-6 As shown, a multi-ultrasonic coupling assisted rolling composite equipment for metal layered composite materials according to the technical solution of the present invention utilizes 2 to 6 sets of ultrasonic vibration mechanisms to output 2 to 6 or more ultrasonic waves, which makes up for the defects of uneven energy distribution and weak energy of a single ultrasonic wave in the direction of the roll axis, and solves the problems of limited thickness and width and discontinuous interface composite in traditional ultrasonic assisted rolling composite. The equipment is characterized by mainly including three parts: rolling mechanism, ultrasonic vibration system and heating system.

[0040] The rolling mechanism includes a base plate 1, a mill stand 2, a cover plate 7, a pressing device 8, a first work roll 9, a second work roll 10, a universal telescopic coupling 11, a rotary bearing, a first bearing seat 28, a second bearing seat 12, a gear set, a gear set support 13, a first gear 14, a second gear 15, a servo motor 16, a balance spring set 17, a balance spring set guide rod 18, a gear shaft 19, and a balance spring seat 27. The mill stand 2 and the gear set support 13 are mounted on the base plate 1. The servo motor 16 is mounted below the gear set support 13. The rolling torque of the first work roll 9 and the second work roll 10 is provided by the servo motor 16, and the torque is distributed to the first gear 14 and the second gear 15 through the gear set. The first gear 14 and the second gear 15 of the gear set are mounted on the gear set support 13 through rotary bearings. The two gear shafts 19 are connected to the first work roll via the universal telescopic coupling 11. The first working roll 9 is connected to the second working roll 10, thereby transmitting the rotational torque to the first working roll 9 and the second working roll 10. The first working roll 9 and the second working roll 10 are respectively installed in the first bearing seat 28 and the second bearing seat 12 through rotating bearings. The first bearing seat 28 is slidably installed on the side of the mill stand 2, and the second bearing seat 12 is fixedly installed below the mill stand 2. The pressing device 8 is installed on the cover plate 7 by means of threads, and the roll gap between the first working roll 9 and the second working roll 10 can be adjusted by the amount of thread advance. The balance spring seats 27 are respectively fixedly installed on both sides of the mill stand 2. The balance spring group 17 is installed between the balance spring seat 27 and the reserved guide hole of the first bearing seat 28 through the balance spring group guide rod 18. The self-weight of the first working roll 9 can be balanced by adjusting the balance spring group guide rod 18, which facilitates the adjustment of the resonance between the ultrasonic vibration mechanism and the first working roll 9 and the second working roll 10.

[0041] The heating system includes a heating pressure adjusting bolt 21, a heating pressure spring 22, a heating pressure bracket 23, a first heating control system, a second heating control system, a first heating plate 26, and a second heating plate 24. The first heating plate 26 and the second heating plate 24 each have built-in induction heating coils. The first and second heating control systems can be adjusted to achieve different temperatures for the first heating plate 26 and the second heating plate 24. The first heating plate 26 and the second heating plate 24 are slidably mounted on the mill stand 2. Two heating pressure brackets 23 are fixedly mounted on the upper and lower sides of the roll gap between the first work roll 9 and the second work roll 10. The heating pressure adjusting bolt 21 is threaded onto the two heating pressure brackets 23 to adjust the heating pressure spring 22, ensuring that the first heating plate 26 and the second heating plate 24 are always in contact with the substrate and the coating material during rolling to ensure efficient heat transfer.

[0042] The ultrasonic vibration system consists of an ultrasonic generator and, for example, 2 to 6 sets of ultrasonic vibration mechanisms. The ultrasonic generator 20 controls the 2 to 6 sets of ultrasonic vibration mechanisms to output 2 to 6 lines of ultrasonic waves with different phases to ensure a constant phase difference. Each ultrasonic vibration mechanism consists of an ultrasonic amplitude transformer and an ultrasonic transducer. The ultrasonic amplitude transformer includes a first ultrasonic amplitude transformer 4 and a second ultrasonic amplitude transformer 6. The ultrasonic transducer includes a first ultrasonic transducer 3 and a second ultrasonic transducer 5. The first ultrasonic amplitude transformer 4 is fixedly connected to the first ultrasonic transducer 3, and the second ultrasonic amplitude transformer 6 is fixedly connected to the second ultrasonic transducer 5. The first ultrasonic amplitude transformer 4 and the first ultrasonic transducer 3 are fixedly mounted on the shaft end of the second working roller 10, and the second ultrasonic amplitude transformer 6 and the second ultrasonic transducer 5 are fixedly mounted on the shaft end of the first working roller 9. This drives the first working roller 9 and the second working roller 10 to resonate with the ultrasonic vibration mechanism. Figure 1 As shown.

[0043] Furthermore, the ultrasonic vibration system is installed in front of or behind the first work roll 9 and / or the second work roll 10 in the rolling direction, such as... Figure 2 As shown, the first work roll 9 and / or the second work roll 10 are driven to periodically shift their positions along the rolling direction, thereby introducing frictional heat into the deformation zone and promoting the formation of the metallurgical bonding interface.

[0044] Furthermore, the mill stand 2 is equipped with a guide device that cooperates with the first bearing seat 28, for adjusting the roll gap between the first work roll 9 and the second work roll 10.

[0045] Furthermore, the roll gap adjustment range between the first working roll 9 and the second working roll 10 is less than the maximum extension of the universal telescopic coupling 11, so as to ensure effective connection between the first working roll 9 and the second working roll 10 and the two gear shafts 19 respectively.

[0046] Furthermore, the surfaces of the first working roller 9 and the second working roller 10 are processed into rough surfaces to increase the coefficient of friction between the first working roller 9 and the second working roller 10 and the substrate and the coating, which is beneficial to generate effective relative misalignment between the substrate and the coating.

[0047] Furthermore, the connection lines between the two ultrasonic vibration mechanisms and the ultrasonic generator 20 are all connected by brushes to avoid the wires from getting tangled due to the rotation of the first working roller 9 and the second working roller 10.

[0048] Furthermore, the front ends of the first heating plate 26 and the second heating plate 24 are provided with rounded chamfers to facilitate feeding the metal stacked billet into the roll gap between the first working roll 9 and the second working roll 10.

[0049] The present invention also provides a multi-ultrasonic coupling assisted rolling composite method using the above-mentioned multi-ultrasonic coupling assisted rolling composite equipment for metal layered composite materials, the specific steps of which are as follows:

[0050] Step 1: Adjust the pressing device 8 according to the critical pressing amount of the metal laminated billet to change the roll gap between the first working roll 9 and the second working roll 10;

[0051] Step 2: Adjust the first heating control system and the second heating control system as needed to heat the first heating plate 26 and the second heating plate 24 to the required temperatures respectively;

[0052] Step 3: Start the servo motor 16 and control the rotation speed of the first working roller 9 and the second working roller 10 through the computer program, so that the first working roller 9 and the second working roller 10 rotate at a speed of v. i The speed of rotation is stable;

[0053] Step 4: Adjust the ultrasonic generator 20 so that the first ultrasonic vibration mechanism operates at f i frequency (f) i The frequency adjustment range is, for example, 1 to 50 kHz) and the initial phase φ = i (the adjustment range of i is, for example, 0 to 360°) resonate with the second working roller 10, so that the second ultrasonic vibration mechanism resonates with f i The frequency and initial phase φ = i + 90° resonate with the first working roller 9;

[0054] Step 5: When the rotation of the first working roller 9 and the second working roller 10 and the ultrasonic vibration of the first working roller 9 and the second working roller 10 are stable and the temperature of the first heating plate 26 and the second heating plate 24 reaches the preset temperature, the surface-treated metal laminated billet is fed into the roller gap between the first working roller 9 and the second working roller 10.

[0055] Step 6: At rolling speed v i The first ultrasonic vibration mechanism has a vibration frequency f. i and the initial phase φ = i and the vibration frequency f of the second ultrasonic vibration mechanism i Under the condition of initial phase φ=i+90°, multi-ultrasonic coupled assisted rolling composite is performed on metal laminated billets to obtain high-quality metal layered composite materials with strong metallurgical bonding at the composite interface.

[0056] Furthermore, the metal layered composite material may be subjected to subsequent composite rolling forming, for example, 1 to 10 passes, as needed.

[0057] Example 1

[0058] Multi-ultrasonic coupling assisted rolling composite of copper / aluminum layered composite materials (original billet is 1mm copper plate + 1mm aluminum plate):

[0059] First, the gap between the first working roll 9 and the second working roll 10 is adjusted to 1.4 mm by adjusting the pressing device 8; then, the first heating plate 26 is heated to 300°C and the second heating plate 24 is heated to 200°C by the heating control system; next, the servo motor 16 is started, and the working rolls are controlled by the computer to move at a speed of v. i The first working roller 9 rotates at a speed of 1 m / min; then the ultrasonic generator 20 is activated, causing the first working roller 9 to rotate at a speed of f i The frequency of 20kHz resonates stably with the second ultrasonic transducer 5 and the second ultrasonic amplitude transformer 6, and the initial phase of the first working roller is φ = 0°; the second working roller 10 resonates with the frequency of f i The frequency of 20kHz resonates stably with the first ultrasonic transducer 3 and the first ultrasonic amplitude transformer 4, and the phase of the second working roll 10 is φ = 90°. When the rotation of the first working roll 9 and the second working roll 10 and the ultrasonic vibration of the first working roll 9 and the second working roll 10 are stable and the temperature of the heating plate reaches the preset temperature, the surface-treated metal laminated billet is fed into the working roll for multi-ultrasonic coupling assisted rolling composite to obtain a high-quality copper / aluminum layered composite material with strong metallurgical bonding at the composite interface.

[0060] Example 2

[0061] Multi-ultrasonic coupling assisted rolling composite of copper / aluminum layered composite materials (original billet is 1.5mm copper plate + 2mm aluminum plate):

[0062] First, the gap between the first working roll 9 and the second working roll 10 is adjusted to 2.1 mm by adjusting the pressing device 8; then, the first heating plate 26 is heated to 300°C and the second heating plate 24 is heated to 200°C by the heating control system; next, the servo motor 16 is started, and the working rolls are controlled by the computer to move at v i The first working roller 9 rotates at a speed of 1 m / min; then the ultrasonic generator 20 is activated, causing the first working roller 9 to rotate at a speed of f i The frequency of 45kHz resonates stably with the second ultrasonic transducer 5 and the second ultrasonic amplitude transformer 6, and the initial phase of the first working roller is φ = 0°; the second working roller 10 resonates with the frequency of f i The frequency of 20kHz resonates stably with the first ultrasonic transducer 3 and the first ultrasonic amplitude transformer 4, and the phase of the second working roll 10 is φ = 90°. When the rotation of the first working roll 9 and the second working roll 10 and the ultrasonic vibration of the first working roll 9 and the second working roll 10 are stable and the temperature of the heating plate reaches the preset temperature, the surface-treated metal laminated billet is fed into the working roll for multi-ultrasonic coupling assisted rolling composite to obtain a high-quality copper / aluminum layered composite material with strong metallurgical bonding at the composite interface.

[0063] Example 3

[0064] Magnesium / aluminum layered composite material with multi-ultrasonic coupling assisted rolling composite (original billet is 1mm magnesium plate + 1mm aluminum plate):

[0065] First, the gap between the first working roll 9 and the second working roll 10 is adjusted to 1.3mm by adjusting the pressing device 8; then, the first heating plate 26 is heated to 350℃ and the second heating plate 24 is heated to 200℃ by the heating control system; next, the servo motor 16 is started, and the working rolls are controlled by the computer to move at v i The first working roller 9 rotates at a speed of 1 m / min; then the ultrasonic generator 20 is activated, causing the first working roller 9 to rotate at a speed of f i The frequency of 30kHz resonates stably with the second ultrasonic transducer 5 and the second ultrasonic amplitude transformer 6, and the initial phase of the first working roller is φ = 0°; the second working roller 10 resonates with the frequency of f i The frequency of 30kHz resonates stably with the first ultrasonic transducer 3 and the first ultrasonic amplitude transformer 4, and the phase of the second working roll 10 is φ = 90°. When the rotation of the first working roll 9 and the second working roll 10 and the ultrasonic vibration of the first working roll 9 and the second working roll 10 are stable and the temperature of the heating plate reaches the preset temperature, the surface-treated metal laminated billet is fed into the working roll for multi-ultrasonic coupling assisted rolling composite to obtain a high-quality magnesium / aluminum layered composite material with strong metallurgical bonding at the composite interface.

[0066] Example 4

[0067] Magnesium / aluminum layered composite material with multi-ultrasonic coupling assisted rolling composite (original billet is 0.9mm magnesium plate + 1.2mm aluminum plate):

[0068] First, the gap between the first working roll 9 and the second working roll 10 is adjusted to 1.47 mm by adjusting the pressing device 8; then, the first heating plate 26 is heated to 350°C and the second heating plate 24 is heated to 200°C by the heating control system; next, the servo motor 16 is started, and the working rolls are controlled by the computer to move at v i The first working roller 9 rotates at a speed of 1 m / min; then the ultrasonic generator 20 is activated, causing the first working roller 9 to rotate at a speed of f i The frequency of 20kHz resonates stably with the second ultrasonic transducer 5 and the second ultrasonic amplitude transformer 6, and the initial phase of the first working roller is φ = 0°; the second working roller 10 resonates with the frequency of f iThe frequency of 50kHz resonates stably with the first ultrasonic transducer 3 and the first ultrasonic amplitude transformer 4, and the phase of the second working roll 10 is φ = 90°. When the rotation of the first working roll 9 and the second working roll 10 and the ultrasonic vibration of the first working roll 9 and the second working roll 10 are stable and the temperature of the heating plate reaches the preset temperature, the surface-treated metal laminated billet is fed into the working roll for multi-ultrasonic coupling assisted rolling composite to obtain a high-quality magnesium / aluminum layered composite material with strong metallurgical bonding at the composite interface.

[0069] In summary, the ultrasonic vibration system in this invention consists of an ultrasonic generator controlling 2 to 6 ultrasonic vibration mechanisms to ensure a constant phase difference. These 2 to 6 ultrasonic vibration mechanisms are respectively installed at the ends of the first and second working rolls' roller shafts, or in front of or behind them in the rolling direction. By utilizing these 2 to 6 ultrasonic vibration mechanisms to output 2 to 6 waves of ultrasonic waves with different phases, the system compensates for the uneven energy distribution and weak energy of a single ultrasonic wave in the roller shaft direction. This solves the problems of limited thickness and width, and discontinuous interface bonding in traditional ultrasonic-assisted rolling composite processes, thereby achieving continuous and efficient preparation of millimeter-thickness, wide-width, and continuously interface-bonded layered metal composite materials. The method of this invention is simple in process, easy to implement, highly efficient, and low in cost. It is particularly helpful in preparing high-quality layered metal composite materials with millimeter-thickness, wide width, continuously interface bonding, high bonding strength, low internal residual stress, and no anisotropy.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-ultrasonic coupling assisted rolling and bonding method using a multi-ultrasonic coupling assisted rolling and bonding apparatus for a metal layered composite, characterized by, The metal layered composite multi-ultrasonic coupling auxiliary rolling composite equipment comprises a rolling mechanism, an ultrasonic vibration system and a heating system, wherein the ultrasonic vibration system is composed of 2-6 sets of ultrasonic vibration mechanisms controlled by an ultrasonic generator (20), the 2-6 sets of ultrasonic vibration mechanisms are respectively installed at the shaft end of the roll shaft of the first work roll (9) and the second work roll (10) or in front of or behind the rolling direction, and the work roll is driven by the multiple sets of ultrasonic vibration mechanisms to generate ultrasonic vibration with a phase difference of 0-360°; the heating system is installed at the front end of the blank (25) feeding of the rolling mechanism; The rolling mechanism comprises a base plate (1), a rolling mill housing (2), a cover plate (7), a screwdown device (8), a first work roll (9), a second work roll (10), a universal telescopic coupling (11), a rotating bearing, a first bearing seat (28), a second bearing seat (12), a gear set, a gear set support (13), a first gear (14), a second gear (15), a servo motor (16), a balance spring set (17), a balance spring set guide rod (18), a gear shaft (19) and a balance spring seat (27); the rolling mill housing (2) and the gear set support (13) are installed on the base plate (1); the two gear shafts (19) are connected with the first work roll (9) and the second work roll (10) through the universal telescopic coupling (11); the screwdown device (8) is installed on the cover plate (7) in a threaded manner, and the roll gap between the first work roll (9) and the second work roll (10) is adjusted by the screwing amount; The heating system comprises a first heating control system, a second heating control system, a first heating plate (26) and a second heating plate (24); the first heating plate (26) and the second heating plate (24) are respectively slidably installed on the rolling mill housing (2); The specific steps of the multi-ultrasonic coupling auxiliary rolling composite method are as follows: Step 1: adjust the screwdown device (8) according to the critical screwdown amount of the metal layered blank to change the roll gap between the first work roll (9) and the second work roll (10); Step 2: adjust the first heating control system and the second heating control system as needed, so that the first heating plate (26) and the second heating plate (24) are respectively heated to the required temperature; Third step: start the servo motor (16), and control the rotating speed of the first work roll (9) and the second work roll (10) through the computer program, so that the first work roll (9) and the second work roll (10) rotate stably at the speed of 0.5-1.5 m / s. v i 0.5-1.5 m / s. Fourth step: adjust the ultrasonic generator (20) to make the first set of ultrasonic vibration mechanism to resonate with the second work roll (10) at the frequency and initial phase f i Step 3: adjust the screwdown device (8) according to the critical screwdown amount of the metal layered blank to change the roll gap between the first work roll (9) and the second work roll (10); i = f i The frequency adjustment range is 1~50 kHz, i The adjustment range is 0~360°; make the second set of ultrasonic vibration mechanism to resonate with the first work roll (9) at the frequency and initial phase f i Step 4: adjust the first heating control system and the second heating control system as needed, so that the first heating plate (26) and the second heating plate (24) are respectively heated to the required temperature; i + 90°​​​​ Step 5: after the rotation of the first work roll (9) and the second work roll (10) and the ultrasonic vibration of the first work roll (9) and the second work roll (10) are stable and the temperature of the first heating plate (26) and the second heating plate (24) reaches the preset temperature, the metal layered blank after surface treatment is fed into the roll gap between the first work roll (9) and the second work roll (10); Sixth step: under the condition that the rolling speed v i , the first set of ultrasonic vibration mechanism vibration frequency f i , initial phase Step 6: the first work roll (9) and the second work roll (10) are rotated and driven by the ultrasonic vibration mechanism to roll the metal layered blank, and the metal layered composite is obtained after the metal layered blank is rolled to the required thickness. = i and the second set of ultrasonic vibration mechanism vibration frequency f i , initial phase ​ = i + 90°, the metal laminated blank is subjected to multi-ultrasonic coupling assisted rolling compounding, and high-quality metal layered composite material with strong metallurgical bonding at the compounding interface is obtained.

2. The multi-sonic coupling assisted rolling composite process of claim 1, wherein, The servo motor (16) is installed below the gear set support (13), the first gear (14) and the second gear (15) of the gear set are installed on the gear set support (13) through the rotating bearing; the first work roll (9) and the second work roll (10) are respectively installed in the first bearing seat (28) and the second bearing seat (12) through the rotating bearing, the first bearing seat (28) is slidingly installed on the side of the rolling mill housing (2), the second bearing seat (12) is fixedly installed below the rolling mill housing (2); the balance spring seat (27) is fixedly installed on the two sides of the rolling mill housing (2) respectively, and the balance spring set (17) is installed between the balance spring seat (27) and the guide hole reserved in the first bearing seat (28) through the balance spring set guide rod (18).

3. The multi-sonic coupling assisted rolling composite process of claim 2, wherein, The heating system further comprises a heating pressure adjusting bolt (21), a heating pressure spring (22) and a heating pressure support (23); wherein the first heating plate (26) and the second heating plate (24) are respectively provided with an induction heating coil, the two heating pressure supports (23) are fixedly installed on the upper and lower sides of the roll gap of the first work roll (9) and the second work roll (10) respectively, and the heating pressure adjusting bolt (21) is installed on the two heating pressure supports (23) through a threaded structure.

4. The multi-sonic coupling assisted rolling composite process of claim 1, wherein, The ultrasonic vibration system is composed of an ultrasonic generator and two sets of ultrasonic vibration mechanisms; the ultrasonic vibration mechanism is composed of an ultrasonic amplitude transformer and an ultrasonic transducer, the ultrasonic amplitude transformer comprises a first ultrasonic amplitude transformer (4) and a second ultrasonic amplitude transformer (6), the ultrasonic transducer comprises a first ultrasonic transducer (3) and a second ultrasonic transducer (5), the first ultrasonic amplitude transformer (4) is fixedly connected with the first ultrasonic transducer (3), the second ultrasonic amplitude transformer (6) is fixedly connected with the second ultrasonic transducer (5), the first ultrasonic amplitude transformer (4) and the first ultrasonic transducer (3) are fixedly installed on the shaft end of the second work roll (10), and the second ultrasonic amplitude transformer (6) and the second ultrasonic transducer (5) are fixedly installed on the shaft end of the first work roll (9), so that the first work roll (9) and the second work roll (10) are driven to resonate with the ultrasonic vibration mechanism.

5. The multi-sonic coupling assisted rolling compounding method of claim 4, wherein, The ultrasonic vibration system is installed in front of or behind the rolling direction of the first work roll (9) and / or the second work roll (10), and the first work roll (9) and / or the second work roll (10) are driven to periodically dislocate in the rolling direction.

6. The multi-sonic coupling assisted rolling composite process of claim 2, wherein, The rolling mill housing (2) is provided with a guide device matched with the first bearing seat (28).

7. The multi-sonic coupling assisted rolling composite process of claim 2, wherein the first and second ultrasonic coupling devices are configured to apply ultrasonic vibrations to the first and second workpieces in a direction that is substantially parallel to the rolling direction of the workpieces. The roll gap adjustment range of the first work roll (9) and the second work roll (10) is less than the maximum expansion amount of the universal telescopic coupling (11).

8. The multi-sonic coupling assisted rolling composite process of claim 2, wherein, The surfaces of the first work roll (9) and the second work roll (10) are processed into rough surfaces.

9. The multi-sonic coupling assisted rolling compounding method of claim 4, wherein, The connecting lines between the two ultrasonic vibration mechanisms and the ultrasonic generator (20) are all connected by brushes.

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