Regulation and control method for low-temperature residual stress of steel-aluminum composite board and related equipment

Abstract

The invention discloses a method and related equipment for regulating and controlling the low-temperature residual stress of a steel-aluminum composite plate, and the method comprises the steps that pre-compression treatment is conducted on materials to be regulated and controlled through composite rolling operation, a pre-compressed first composite plate is formed, and the materials to be regulated and controlled comprise a steel plate, a pure aluminum plate and an aluminum alloy plate; the first composite board is subjected to cold and hot circulation treatment for preset times, and a second composite board is obtained; and material information of the to-be-regulated material is obtained, a connecting structure of the second composite board is constructed based on the material information, and a target composite board comprising the connecting structure is obtained, so that regulation of the low-temperature residual stress of the to-be-regulated material is completed. According to the steel-aluminum composite material, the residual stress at the joints of various materials of the steel-aluminum composite material can be effectively reduced, and the overall stability and reliability of the composite structure in a low-temperature environment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of metal composite materials, and in particular to a method for regulating low-temperature residual stress of a steel-aluminum composite plate and related equipment. Background Art

[0002] With the development of modern industry, steel-aluminum composite materials have been widely used in aerospace, automobile manufacturing, construction and other fields due to their excellent mechanical properties, corrosion resistance and lightweight characteristics. However, steel-aluminum composite materials are prone to residual stress during manufacturing and use, especially in low-temperature environments. At the same time, traditional connection technologies often have problems such as insufficient connection strength and failure when dealing with complex stress environments and temperature changes, which will affect the dimensional stability and performance of steel-aluminum composite materials. Summary of the invention

[0003] In order to solve the above technical problems, the embodiments of the present application provide a method, system and device for regulating low-temperature residual stress of a steel-aluminum composite plate, an electronic device, a computer-readable storage medium, and a computer program product.

[0004] In the first aspect, in order to solve the above technical problems, the present application provides a method for regulating low-temperature residual stress of a steel-aluminum composite plate, comprising:

[0005] Pre-compressing the material to be regulated by composite rolling to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate, and an aluminum alloy plate;

[0006] Performing a preset number of hot-cold cycle treatments on the first composite plate to obtain a second composite plate;

[0007] The material information of the material to be regulated is obtained, and a connection structure of the second composite plate is constructed based on the material information to obtain a target composite plate including the connection structure, so as to complete the regulation of the low-temperature residual stress of the material to be regulated.

[0008] The beneficial effects are:

[0009] In the technical solution provided in the embodiment of the present application, the second composite plate is obtained by pre-compressing and hot-cold cycling the materials to be regulated, i.e., steel plates, pure aluminum plates, and aluminum alloy plates, which can effectively reduce the residual stress at the connection between the various materials of the steel-aluminum composite material, and improve the overall stability and reliability of the composite structure in a low-temperature environment. And based on the material characteristics reflected by the material information of the material to be regulated, the external connection structure of the second composite plate is constructed to form a target composite plate, which fully considers the physical properties and application requirements of the material, enhances the strength and stability of the connection structure, and completes the regulation of the low-temperature residual stress of the material to be regulated.

[0010] In a second aspect, the present invention provides a control system for low-temperature residual stress of a steel-aluminum composite plate, comprising a composite rolling device, a cold and hot cycle device and a structural design device, wherein the composite rolling device, the cold and hot cycle device and the structural design device are connected by a conveyor belt;

[0011] The composite rolling device performs pre-compression processing on the material to be regulated through composite rolling operation to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate and an aluminum alloy plate;

[0012] The composite rolling device sends the first composite plate to the hot-cold cycle device through the conveyor belt, and the hot-cold cycle device performs a preset number of hot-cold cycles on the first composite plate to obtain a second composite plate, and sends the second composite plate to the structural design device through the conveyor belt;

[0013] The structural design device obtains material information of the material to be regulated, constructs a connection structure of the second composite plate based on the material information, and obtains a target composite plate including the connection structure to complete the regulation of the low-temperature residual stress of the material to be regulated.

[0014] In a third aspect, the present invention provides a device for regulating low-temperature residual stress of a steel-aluminum composite plate, comprising a pre-compression unit, a cold and hot cycle unit, and a design unit;

[0015] A pre-compression unit, which pre-compresses the material to be regulated by composite rolling to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate and an aluminum alloy plate;

[0016] A hot-cold cycle unit, used for performing a preset number of hot-cold cycle treatments on the first composite plate to obtain a second composite plate;

[0017] The design unit is used to obtain material information of the material to be regulated, construct a connection structure of the second composite plate based on the material information, and obtain a target composite plate including the connection structure to complete the regulation of the low-temperature residual stress of the material to be regulated.

[0018] In a fourth aspect, the present application also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the electronic device implements the method for regulating the low-temperature residual stress of the steel-aluminum composite plate as described above.

[0019] In a fifth aspect, the present application also provides a computer-readable storage medium having computer-readable instructions stored thereon. When the computer-readable instructions are executed by a processor of a computer, the computer executes the method for regulating low-temperature residual stress of a steel-aluminum composite plate as described above.

[0020] In a sixth aspect, the present application further provides a computer program product or a computer program, the computer program product or the computer program including computer instructions, the computer instructions being stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method for regulating the low-temperature residual stress of the steel-aluminum composite plate provided in the above-mentioned various optional embodiments.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 is a flow chart of a method for regulating low-temperature residual stress of a steel-aluminum composite plate shown in an exemplary embodiment of the present application;

[0024] Figure 2 It is a structural schematic diagram of a control system using a method for controlling low-temperature residual stress of a steel-aluminum composite plate in an exemplary embodiment of the present application;

[0025] Figure 3 is a schematic structural diagram of a composite rolling device in an exemplary embodiment of the present application;

[0026] Figure 4 is a schematic structural diagram of a cold and hot cycle device in an exemplary embodiment of the present application;

[0027] Figure 5 is a block diagram of a device for regulating low-temperature residual stress of a steel-aluminum composite plate shown in an exemplary embodiment of the present application;

[0028] Figure 6 It is a structural diagram of a computer system suitable for implementing an electronic device of an embodiment of the present application. DETAILED DESCRIPTION

[0029] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0030] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0031] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0032] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0033] In order to solve the problem that residual stress is easily generated in the manufacturing and use process of steel-aluminum composite materials, especially in low-temperature environments, which affects the dimensional stability and performance of the material, the embodiments of the present application propose a method, system and device, electronic device, and computer-readable storage medium for regulating the low-temperature residual stress of steel-aluminum composite plates. The embodiments mainly involve the technology for regulating the low-temperature residual stress of steel-aluminum composite plates included in the metal composite material technology. These embodiments will be described in detail below.

[0034] First see Figure 1 , Figure 1 This is a flow chart of a method for regulating low temperature residual stress of a steel-aluminum composite plate shown in an exemplary embodiment of the present application. The method can be specifically performed by a server, which can be an independent server or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (CDNs), and big data and artificial intelligence platforms, etc., and is not limited here.

[0035] like Figure 1 As shown, in an exemplary embodiment, the method for regulating low temperature residual stress of the steel-aluminum composite plate may include steps S101 to S103, which are described in detail as follows:

[0036] Step S101, pre-compressing the material to be regulated by composite rolling operation to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate and an aluminum alloy plate.

[0037] In this embodiment, the means used for pre-compression treatment is rolling, which utilizes the uncoordinated deformation between grains during the rolling process to promote the accumulation of dislocations at the grain boundaries, increase the concentration of vacancies and carbon atom complexes at the grain boundaries, provide a driving force for the change of carbon concentration in the micro-regions within the grains, and provide better starting conditions for the heat treatment in the subsequent hot and cold cycle treatment.

[0038] Step S102, performing a preset number of hot and cold cycle treatments on the first composite plate to obtain a second composite plate.

[0039] On the basis of pre-compression treatment, the first composite plate is subjected to multiple hot and cold cycle treatments, each cycle including two stages: high temperature heating and low temperature cooling. The high temperature heating stage increases the internal temperature of the first composite plate, intensifies the molecular motion, and promotes the release and redistribution of stress; the low temperature cooling stage further reduces the residual stress through the thermal expansion and contraction effect. In this way, the preset number of hot and cold cycle treatments allows the stress inside the first composite plate to be fully released and rebalanced, thereby achieving the purpose of reducing the residual stress and obtaining the second composite plate after the residual stress is reduced.

[0040] Step S103, obtaining material information of the material to be regulated, constructing a connection structure of the second composite plate based on the material information, and obtaining a target composite plate including the connection structure, so as to complete the regulation of the low-temperature residual stress of the material to be regulated.

[0041] The traditional external connection technology of steel-aluminum composite panels often encounters problems such as insufficient connection strength and failure when dealing with complex stress environments and temperature changes. In the embodiment provided by the present application, after the material to be regulated is subjected to pre-compression treatment and hot and cold cycle treatment to obtain the second composite panel, the material information of the material to be regulated is used to construct the connection structure on the second composite panel to obtain the target composite panel including the connection structure, which further improves the stability and performance of the steel-aluminum composite panel.

[0042] As can be seen from the above, in the method provided in this embodiment, on the one hand, by pre-compressing and hot-cold-hot-cycle treating the materials to be regulated, namely the steel plate, the pure aluminum plate and the aluminum alloy plate, a second composite plate is obtained, which can significantly reduce the residual stress at the connection between various materials in the steel-aluminum composite plate, and improve the stability and reliability of the steel-aluminum composite plate in a low temperature environment. On the other hand, the connection structure design constructed using the material information of the material to be regulated fully considers the physical properties and application requirements of the material, thereby significantly improving the strength and stability of the connection structure through reasonable design, thereby further improving the stability and performance of the steel-aluminum composite plate. In addition, compared with the traditional residual stress regulation method, the pre-compression treatment and hot-cold-hot-cycle treatment process of the present application is relatively simple, and does not require complex equipment and expensive materials, so it is cheaper and has a wide range of applications. It can also be extended to other composite materials with large differences in thermal expansion coefficients, and has broad application prospects.

[0043] In an exemplary embodiment provided in the present application, a steel-aluminum-aluminum alloy corrugated composite plate is obtained as a first composite plate by sequentially pre-compressing the steel plate, pure aluminum plate and aluminum alloy plate included in the materials to be regulated, and the pre-compression treatment performed is a corrugation roller cold rolling treatment or a flat roller hot rolling treatment. The specific steps of forming the pre-compressed first composite plate may include:

[0044] The steel plate to be regulated is subjected to a corrugated roller cold rolling process to obtain a corrugated steel plate;

[0045] The corrugated steel plate and the pure aluminum plate included in the material to be regulated are subjected to a corrugation roller cold rolling process to obtain a steel-aluminum corrugated composite plate;

[0046] The steel-aluminum corrugated composite plate and the aluminum alloy plate included in the regulating material are subjected to flat roll hot rolling treatment to obtain a steel-aluminum-aluminum alloy corrugated composite plate as a first composite plate.

[0047] In this embodiment, the pre-compression treatment is a corrugation roller cold rolling treatment or a flat roll hot rolling treatment, and the process of sequentially performing pre-compression treatment on the steel plate, the pure aluminum plate and the aluminum alloy plate to obtain the first composite plate is: performing corrugation roller cold rolling treatment on the steel plate included in the material to be regulated to obtain a corrugated steel plate; performing corrugation roller cold rolling treatment on the corrugated steel plate and the pure aluminum plate included in the material to be regulated to obtain a steel-aluminum corrugated composite plate; performing flat roll hot rolling treatment on the steel-aluminum corrugated composite plate and the aluminum alloy plate included in the regulated material to obtain a steel-aluminum-aluminum alloy corrugated composite plate as the first composite plate.

[0048] In this way, the present application, through the above-mentioned embodiments, utilizes the local strong stress effect of corrugated roller cold rolling and flat roller hot rolling to transfer the problems existing in the traditional steel-aluminum interface direct rolling composite, such as the steel side is difficult to duct and break, the bonding mainly relies on heat-pressing, and the bonding strength is low, into high thickness ratio steel-aluminum interface rolling composite and aluminum-aluminum alloy interface hot rolling composite problems, effectively reducing the oxidation risk of each interface during the compression process, and improving the bonding ability between each interface, so as to continuously prepare steel-aluminum-aluminum alloy corrugated composite plates with straight plate shape and corrugated interfaces.

[0049] In addition, the above-mentioned rolling method is used for pre-compression treatment, and the uncoordinated deformation between grains during the rolling process is utilized to promote the accumulation of dislocations at the grain boundaries, increase the concentration of vacancies and carbon atom complexes at the grain boundaries, provide a driving force for the change of carbon concentration in the micro-region within the grains, and provide better starting conditions for subsequent hot and cold cycle treatments.

[0050] In an exemplary embodiment provided by the present application, various parameters of the hot and cold cycle treatment are determined by various information corresponding to the material to be regulated, and the information may include the target residual stress level, material parameters and initial residual stress level under the target application environment. The specific steps of determining various parameters and performing hot and cold cycle treatment based on various parameters may include:

[0051] Obtaining the target residual stress level of the material to be regulated under the target application environment;

[0052] Obtaining material parameters and initial residual stress levels of the material to be regulated, wherein the material parameters include material types and thickness information of each material type;

[0053] Based on the material type, thickness information, initial residual stress level and target residual stress level, the temperature parameters and time parameters corresponding to the hot and cold cycle treatment are obtained;

[0054] The first composite plate is subjected to a preset number of hot and cold cycle treatments using temperature parameters and time parameters to obtain a second composite plate.

[0055] In this embodiment, on the basis of the pre-compression treatment, various parameters of the hot and cold cycle treatment are determined and the hot and cold cycle treatment is performed accordingly. First, the target residual stress level of the material to be regulated under the target application environment, as well as the material parameters and initial residual stress level of the material to be regulated are obtained. The material parameters include the material type and the thickness information of each material type; then, based on the material type, thickness information, initial residual stress level and target residual stress level, the temperature parameters and time parameters corresponding to the hot and cold cycle treatment are obtained. The temperature parameters correspond to the high temperature heating stage in the range of 100°C to 300°C to allow the internal stress of the material to be released, and the low temperature cooling stage in the range of -100°C to -50°C, and the residual stress is further reduced by the thermal expansion and contraction effect. After the first composite plate is subjected to the preset number of hot and cold cycle treatments according to the temperature parameters and time parameters, the internal stress is fully released and rebalanced, and the initial residual stress level can be changed to the target residual stress level, and the second composite plate is obtained, thereby achieving the purpose of reducing the residual stress.

[0056] Among them, the value of the preset number of times is determined by the material properties of the material to be regulated and the target residual stress level, and the value range can be 3 to 10 times. The greater the difference between the material to be regulated and the target residual stress level, the greater the value of the preset number of times.

[0057] In this way, the present application adjusts and optimizes the temperature parameters and time parameters of the hot and cold cycle treatment according to the material type, thickness information, initial residual stress level and target residual stress level under the target application environment of the material to be regulated through the above-mentioned embodiments, thereby improving the applicability and flexibility of the technology.

[0058] In an exemplary embodiment provided in the present application, after the material to be regulated is subjected to pre-compression treatment and hot and cold cycle treatment, a connection structure of the second composite plate is constructed based on the material information of the material to be regulated to ensure the strength and stability of the steel-aluminum composite material connection structure, and the specific steps may include:

[0059] Acquire multiple expansion coefficients of the materials to be regulated, including a steel plate, a pure aluminum plate, and an aluminum alloy plate, and obtain coefficient differences based on the multiple expansion coefficients;

[0060] Determine the shape and size of the connection interface based on application requirements and coefficient difference, the shape of the connection interface is wavy or zigzag;

[0061] A connection structure is constructed on the second composite plate based on the shape and size of the connection interface to form a target composite plate.

[0062] In this embodiment, the connection structure is designed and constructed taking into account the difference in thermal expansion coefficients of the materials. By combining the application requirements and the coefficient difference, the shape and size of the connection interface are determined. The shape of the connection interface is wavy or zigzag. The special shape of the connection interface can increase the contact area of ​​the connection interface, improve the connection strength, and help to disperse and absorb the thermal stress caused by temperature changes. Therefore, the shape and size of the connection interface corresponding to the application requirements and the coefficient difference can reduce the concentration of thermal stress caused by temperature changes, improve the reliability of the connection parts, and further improve the reliability of the overall target composite board. It is suitable for high-end manufacturing fields such as aerospace, automobile manufacturing, shipbuilding engineering, and building structures.

[0063] In addition, when constructing and designing the connection structure, reinforcing ribs or reinforcing plates can be added to the connection structure based on the physical properties of the second composite plate as a steel-aluminum composite material, which can effectively enhance the stiffness, strength and stability of the connection structure and resist deformation and damage caused by residual stress or external loads.

[0064] See also Figure 2 , Figure 2 It is a structural schematic diagram of a control system for applying a method for controlling low-temperature residual stress of a steel-aluminum composite plate in an exemplary embodiment of the present application.

[0065] like Figure 2 As shown, the control system includes a composite rolling device 100, a cold and hot cycle device 200 and a structural design device 300, and the composite rolling device 100, the cold and hot cycle device 200 and the structural design device 300 are connected by a conveyor belt 400;

[0066] The composite rolling device 100 pre-compresses the material to be regulated by composite rolling operation to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate and an aluminum alloy plate;

[0067] The composite rolling device 100 sends the first composite plate to the hot and cold cycle device 200 through the conveyor belt 400. The hot and cold cycle device 200 performs a preset number of hot and cold cycle treatments on the first composite plate to obtain a second composite plate, and sends the second composite plate to the structure design device 300 through the conveyor belt 400.

[0068] The structural design device 300 obtains material information of the material to be regulated, constructs a connection structure of the second composite plate based on the material information, and obtains a target composite plate including the connection structure to complete the regulation of the low-temperature residual stress of the material to be regulated.

[0069] As can be seen from the above, the control system provided in this embodiment, by applying the control method of low-temperature residual stress of steel-aluminum composite plate, pre-compresses and performs cold and hot cycle treatment on the materials to be regulated, i.e., steel plate, pure aluminum plate and aluminum alloy plate, through a composite rolling device and a cold and hot cycle device to obtain a second composite plate, can effectively reduce the residual stress at the connection between various materials of the steel-aluminum composite material, and improve the overall stability and reliability of the composite structure in a low-temperature environment. And through the structural design device, based on the material characteristics reflected by the material information of the material to be regulated, the external connection structure of the second composite plate is constructed to form a target composite plate, which fully considers the physical properties and application requirements of the material, enhances the strength and stability of the connection structure, and thus completes the control of the low-temperature residual stress of the material to be regulated.

[0070] In an exemplary embodiment provided in the present application, the composite rolling device 100 includes a first compression structure 110, a second compression structure 120 and a third compression structure 130 which are connected in sequence. Figure 3 , Figure 3 It is a schematic diagram of a process flow of obtaining a steel-aluminum-aluminum alloy corrugated composite plate as a first composite plate by using a composite rolling device in an exemplary embodiment of the present application.

[0071] like Figure 3 As shown, the first compression structure 110 and the second compression structure 120 both include a corrugated roller and a flat roller, and the third compression structure 130 includes two flat rollers;

[0072] The first compression structure 110 performs corrugation roller cold rolling on the steel plate included in the material to be regulated to obtain a corrugated steel plate, and transmits the corrugated steel plate to the second compression structure 120; the second compression structure 120 performs corrugation roller cold rolling on the corrugated steel plate and the pure aluminum plate included in the material to be regulated to obtain a steel-aluminum corrugated composite plate, and transmits the steel-aluminum corrugated composite plate to the third compression structure 130; the third compression structure 130 performs flat roller hot rolling on the steel-aluminum corrugated composite plate and the aluminum alloy plate included in the regulated material to obtain a steel-aluminum-aluminum alloy corrugated composite plate as the first composite plate.

[0073] In this embodiment, the first compression structure, the second compression structure and the third compression structure are pre-compressed by rolling, and the local strong stress of the corrugated roller cold rolling and the flat roller hot rolling is utilized to effectively reduce the oxidation risk of each interface during the compression process, and enhance the bonding ability between each interface, so as to continuously prepare steel-aluminum-aluminum alloy corrugated composite plates with straight plate shape and corrugated interfaces.

[0074] In an exemplary embodiment provided in the present application, the cold and hot cycle device 200 includes a cooling structure 210 and a heating structure 220, and the cooling structure 210 and the heating structure 220 are connected by a conveyor belt 400, see Figure 4 , Figure 4It is a schematic structural diagram of a cold and hot cycle device in an exemplary embodiment of the present application.

[0075] like Figure 4 As shown, the cooling structure 210 includes a cooling chamber 211 and a first temperature sensor 212 and a cooling pipe 213 disposed in the cooling chamber 211, and the heating structure 220 includes a heating chamber 221 and a second temperature sensor 222 and a heating pipe 223 disposed in the heating chamber 221;

[0076] The cooling chamber 211 and the heating chamber 221 are connected via a conveyor belt 400 , and the conveyor belt 400 drives the first composite plate to enter and exit the cooling chamber 211 and the heating chamber 221 to achieve a preset number of cold and hot cycle treatments.

[0077] When in use, the temperature in the heating chamber 221 is monitored in real time by a high-precision second temperature sensor 222, and the temperature data is transmitted to the control regulator in real time. The control regulator has a built-in PID control algorithm, and dynamically adjusts the power output of the heating element, that is, the heating tube 223, according to the preset temperature parameters and real-time temperature data to control the heating rate. The user can also set the heating time parameters through the human-machine interface. The control regulator accurately controls the opening time of the heating tube 223 according to the set time parameters and the control effect of the PID algorithm to ensure that the composite material reaches the target temperature within the set time and remains stable.

[0078] The cooling chamber 211 is equipped with an efficient cooling system, namely, cooling pipe 213, to achieve rapid cooling of the composite material. During the cooling process, the control regulator not only monitors the temperature in the cooling chamber 211, but also controls the cooling rate by adjusting the flow rate of the cooling medium. Through the preset cooling time parameters and real-time temperature data, the flow rate of the cooling medium is dynamically adjusted to ensure that the material is quickly cooled to the target low temperature within the set time.

[0079] This embodiment utilizes a cooling structure and a heating structure to perform a hot and cold cycle treatment on the first composite plate after the pre-compression treatment. During the high-temperature heating and low-temperature cooling process, the stress inside the first composite plate is fully released and rebalanced, thereby achieving the purpose of reducing the residual stress and obtaining a second composite plate with reduced residual stress.

[0080] Figure 5 FIG. 5 is a block diagram of a device 500 for controlling low temperature residual stress of a steel-aluminum composite plate according to an exemplary embodiment of the present application. Figure 5 As shown, the device comprises:

[0081] A pre-compression unit 501 is used to pre-compress the material to be regulated by a composite rolling operation to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate and an aluminum alloy plate;

[0082] A hot-cold cycle unit 502, used for performing a preset number of hot-cold cycle treatments on the first composite plate to obtain a second composite plate;

[0083] The design unit 503 is used to obtain material information of the material to be regulated, construct a connection structure of the second composite plate based on the material information, and obtain a target composite plate including the connection structure to complete the regulation of the low-temperature residual stress of the material to be regulated.

[0084] The device applies the method for regulating low-temperature residual stress of steel-aluminum composite plate provided in the present application, and performs pre-compression treatment and cold-heat cycle treatment on the materials to be regulated, i.e., steel plate, pure aluminum plate and aluminum alloy plate, through the pre-compression unit 501 and the cold-heat cycle unit 502 to obtain the second composite plate, which can effectively reduce the residual stress at the connection between various materials of the steel-aluminum composite material, and improve the overall stability and reliability of the composite structure in a low-temperature environment. And through the design unit 503, based on the material characteristics reflected by the material information of the material to be regulated, the external connection structure of the second composite plate is constructed to form a target composite plate, which fully considers the physical properties and application requirements of the material, enhances the strength and stability of the connection structure, and thus completes the regulation of the low-temperature residual stress of the material to be regulated.

[0085] In another exemplary embodiment, the pre-compression unit 501 is also used to perform corrugation roller cold rolling on the steel plate included in the material to be regulated to obtain a corrugated steel plate; perform corrugation roller cold rolling on the corrugated steel plate and the pure aluminum plate included in the material to be regulated to obtain a steel-aluminum corrugated composite plate; perform flat roller hot rolling on the steel-aluminum corrugated composite plate and the aluminum alloy plate included in the regulated material to obtain a steel-aluminum-aluminum alloy corrugated composite plate as a first composite plate.

[0086] In another exemplary embodiment, the hot and cold cycle unit 502 is also used to obtain a target residual stress level of the material to be regulated under a target application environment; obtain material parameters and initial residual stress levels of the material to be regulated, the material parameters including material types and thickness information of each material type; obtain temperature parameters and time parameters corresponding to the hot and cold cycle treatment based on the material type, thickness information, initial residual stress level and target residual stress level; use the temperature parameters and time parameters to perform a preset number of hot and cold cycle treatments on the first composite plate to obtain a second composite plate.

[0087] In another exemplary embodiment, the design unit 503 is also used to obtain multiple expansion coefficients of the materials to be regulated, including steel plates, pure aluminum plates and aluminum alloy plates, and obtain coefficient differences based on the multiple expansion coefficients; determine the shape and shape size of the connection interface based on the application requirements of the materials to be regulated and the coefficient differences, and the shape of the connection interface is wavy or serrated; construct a connection structure on the second composite plate based on the shape and shape size of the connection interface to form a target composite plate.

[0088] It should be noted that the low-temperature residual stress control device for steel-aluminum composite plates provided in the above embodiment and the low-temperature residual stress control method for steel-aluminum composite plates provided in the above embodiment belong to the same concept, wherein the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment and will not be repeated here. In practical applications, the low-temperature residual stress control device for steel-aluminum composite plates provided in the above embodiment can allocate the above functions to different functional modules as needed, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0089] An embodiment of the present application also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, and when the one or more programs are executed by the one or more processors, the electronic device implements the method for regulating the low-temperature residual stress of the steel-aluminum composite plate provided in the above-mentioned embodiments.

[0090] Figure 6 The structure diagram of the computer system suitable for implementing the electronic device of the embodiment of the present application is shown. It should be noted that: Figure 6 The computer system 600 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0091] like Figure 6 As shown, the computer system 600 includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage part 608 to the random access memory (RAM) 603, such as executing the method in the above embodiment. In the RAM 603, various programs and data required for system operation are also stored. The CPU 601, ROM 602 and RAM 603 are connected to each other through a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0092] The following components are connected to the I / O interface 605: an input section 606 including a keyboard, a mouse, etc.; an output section 607 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 610 as needed so that a computer program read therefrom is installed into the storage section 608 as needed.

[0093] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 609, and / or installed from a removable medium 611. When the computer program is executed by a central processing unit (CPU) 601, various functions defined in the system of the present application are executed.

[0094] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0095] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0096] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0097] Another aspect of the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for regulating low-temperature residual stress of a steel-aluminum composite plate as described above. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0098] Another aspect of the present application further provides a computer program product or a computer program, the computer program product or the computer program including computer instructions, the computer instructions being stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method for regulating the low-temperature residual stress of the steel-aluminum composite plate provided in each of the above embodiments.

[0099] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for regulating low temperature residual stress of a steel-aluminum composite plate, characterized in that: The method comprises: Pre-compressing the material to be regulated by composite rolling to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate, and an aluminum alloy plate; Performing a preset number of hot-cold cycle treatments on the first composite plate to obtain a second composite plate; The material information of the material to be regulated is obtained, and a connection structure of the second composite plate is constructed based on the material information to obtain a target composite plate including the connection structure, so as to complete the regulation of the low-temperature residual stress of the material to be regulated.

2. The method according to claim 1, characterized in that: The method of pre-compressing the material to be regulated by composite rolling to form a pre-compressed first composite plate comprises: The steel plate included in the material to be regulated is subjected to a corrugated roller cold rolling process to obtain a corrugated steel plate; The corrugated steel plate and the pure aluminum plate included in the material to be regulated are subjected to a corrugation roller cold rolling process to obtain a steel-aluminum corrugated composite plate; The steel-aluminum corrugated composite plate and the aluminum alloy plate included in the regulating material are subjected to flat roll hot rolling treatment to obtain a steel-aluminum-aluminum alloy corrugated composite plate as a first composite plate.

3. The method according to claim 1, characterized in that The step of subjecting the first composite plate to a preset number of hot and cold cycle treatments to obtain a second composite plate comprises: Obtaining a target residual stress level of the material to be regulated under a target application environment; Obtaining material parameters and initial residual stress levels of the material to be regulated, wherein the material parameters include material types and thickness information of each material type; Based on the material type, the thickness information, the initial residual stress level and the target residual stress level, a temperature parameter and a time parameter corresponding to the hot and cold cycle treatment are obtained; The first composite plate is subjected to a preset number of hot and cold cycle treatments using the temperature parameters and the time parameters to obtain a second composite plate.

4. The method according to claim 1, characterized in that: The step of acquiring material information of the material to be regulated, constructing a connection structure of the second composite board based on the material information, and obtaining a target composite board including the connection structure comprises: Acquire multiple expansion coefficients of the steel plate, pure aluminum plate and aluminum alloy plate included in the material to be regulated, and obtain coefficient differences based on the multiple expansion coefficients; Determine the shape and size of the connection interface based on the application requirements of the material to be regulated and the coefficient difference, wherein the shape of the connection interface is wavy or zigzag; A connection structure is constructed on the second composite board based on the connection interface shape and the shape size to form a target composite board.

5. A control system for low-temperature residual stress of a steel-aluminum composite plate, comprising a composite rolling device, a cold and hot cycle device and a structural design device, wherein the composite rolling device, the cold and hot cycle device and the structural design device are connected by a conveyor belt; The composite rolling device performs pre-compression processing on the material to be regulated through composite rolling operation to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate and an aluminum alloy plate; The composite rolling device sends the first composite plate to the hot-cold cycle device through the conveyor belt, and the hot-cold cycle device performs a preset number of hot-cold cycles on the first composite plate to obtain a second composite plate, and sends the second composite plate to the structural design device through the conveyor belt; The structural design device obtains material information of the material to be regulated, constructs a connection structure of the second composite plate based on the material information, and obtains a target composite plate including the connection structure to complete the regulation of the low-temperature residual stress of the material to be regulated.

6. The system according to claim 5, characterized in that The composite rolling device comprises a first compression structure, a second compression structure and a third compression structure which are connected in sequence; The first compression structure and the second compression structure both include a corrugated roller and a flat roller, and the third compression structure includes two flat rollers; The first compression structure performs a corrugation roller cold rolling process on the steel plate included in the material to be regulated to obtain a corrugated steel plate, and transmits the corrugated steel plate to the second compression structure; The second compression structure performs corrugation roller cold rolling on the corrugated steel plate and the pure aluminum plate included in the material to be regulated to obtain a steel-aluminum corrugated composite plate, and transmits the steel-aluminum corrugated composite plate to the third compression structure; the third compression structure performs flat roller hot rolling on the steel-aluminum corrugated composite plate and the aluminum alloy plate included in the regulated material to obtain a steel-aluminum-aluminum alloy corrugated composite plate as the first composite plate.

7. The system according to claim 5, characterized in that The cold and hot cycle device comprises a cooling structure and a heating structure, and the cooling structure and the heating structure are connected through a conveyor belt; The cooling structure comprises a cooling chamber, a first temperature sensor and a cooling pipe arranged in the cooling chamber, and the heating structure comprises a heating chamber, a second temperature sensor and a heating pipe arranged in the heating chamber; The cooling chamber and the heating chamber are connected through the conveyor belt, and the conveyor belt drives the first composite plate to enter and exit the cooling chamber and the heating chamber to achieve a preset number of cold and hot cycle treatments.

8. A device for regulating low temperature residual stress of a steel-aluminum composite plate, characterized in that: include: A pre-compression unit, used for pre-compressing the material to be regulated by composite rolling operation to form a pre-compressed first composite plate, wherein the material to be regulated includes a steel plate, a pure aluminum plate and an aluminum alloy plate; A hot-cold cycle unit, used for performing a preset number of hot-cold cycle treatments on the first composite plate to obtain a second composite plate; The design unit is used to obtain material information of the material to be regulated, construct a connection structure of the second composite plate based on the material information, and obtain a target composite plate including the connection structure to complete the regulation of the low-temperature residual stress of the material to be regulated.

9. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, enables the electronic device to implement the method for regulating the low-temperature residual stress of the steel-aluminum composite plate as described in any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that: Computer-readable instructions are stored thereon, and when the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute the method for regulating low-temperature residual stress of a steel-aluminum composite plate according to any one of claims 1 to 4.

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