Elliptical forming mechanism for isothermal composite of multiple metals

Abstract

The present invention discloses an elliptical forming mechanism for preparing fully coated composite pipes, composite rods, composite plates and strips, composite busbars and composite profiles by isothermal composite of multiple metals, comprising a pair of upper elliptical rollers, lower elliptical rollers, an adjustable archway, a heater device, a circulating water constant temperature device, a temperature measuring and temperature controlling device, a power assembly and overrunning clutch device, a speed encoder and PLC programming control. The upper and lower elliptical rollers are assembled on the adjustable archway, and several elliptical forming mechanisms are linked to form a multi-level system. The elliptical forming mechanism is in an inert gas atmosphere, the heating device makes the elliptical forming mechanism in a set temperature range, and the temperature-controlled circulating water flows through the axial shunt pipes of the upper and lower elliptical rollers to keep the temperature of the elliptical forming mechanism constant. The elliptical forming mechanism is used to position the coating layer metal substrate and limit the sandwich metal substrate and the core metal substrate to make them centered. The elliptical forming mechanism continuously exchanges heat with the coating layer metal substrate, the sandwich metal substrate and the core metal substrate to establish a multi-metal isothermal composite working condition.

Description

Technical Field

[0001] The invention belongs to the field of metal matrix composite materials, and relates to the application of an elliptical forming mechanism in the isothermal composite preparation of fully-clad composite pipes, composite rods, composite plates and strips, composite busbars and composite profiles by multi-metal isothermal composite. Background Art

[0002] Single metal materials have specific physical and chemical properties. Physical and chemical methods can improve the performance of metal materials, but the basic properties of the materials cannot be changed. Generally, different metals and their alloys have different physical and chemical properties, such as mechanical strength, ductility, thermal expansion coefficient, plastic and elastic deformation, corrosion and wear resistance, thermal and electrical conductivity, specific gravity and specific heat, electromagnetic properties, etc. Multi-component metal composite materials have the properties of each component metal substrate, and have complementary and optimized characteristics. They are a new type of metal material.

[0003] The isothermal composite of multi-metals is a plastic deformation process under the combined action of rolling and temperature. Under the action of deformation and temperature field, the interface atoms diffuse with each other to form a diffusion transition layer with a metallic bond structure. Physical and chemical changes occur in the binary metal interface region, forming a new type of multi-metal composite material.

[0004] Metal matrix composites are usually prepared by solid-liquid phase or solid-solid combination. The solid-solid combination method usually adopts hot rolling and pressing method, drawing bonding method, explosive welding method, horizontal continuous casting method and hydrostatic extrusion method to prepare metal composite materials. Isothermal composite is a newly developed process technology for continuous preparation of multi-metal and alloy composite materials in recent years. Its characteristics are precise control of the temperature, speed, pressure and deformation of the component metals, so that the metal-based core material, metal-based interlayer, metal-based cladding layer and calendering forming device form an isothermal state, with the characteristics of short process, large deformation rate and high efficiency for continuous preparation of metal composite materials. The characteristics of multi-metal isothermal composite are the control of the configuration of interfacial metal compounds, grain size and grain boundary distribution, and the preparation of high-quality multi-metal composite materials. Summary of the invention

[0005] The present invention provides a molding mechanism for isothermal composite of multi-element metals and alloys thereof, which has a simple structure, a stable system and comprehensively improves composite quality and production efficiency.

[0006] The present invention relates to an isothermal composite continuous preparation process of multi-element metals and their alloys, and is a forming mechanism matched with a short-process continuous production line, and is used for preparing fully coated multi-element metal composite pipes, composite rods, composite plates and strips, composite busbars and composite profile products having a multi-layer structure of a metal-based core layer, a metal-based interlayer and a metal-based cladding layer.

[0007] The technical solution of the present invention is as follows:

[0008] The elliptical forming mechanism used for isothermal composite of multi-element metals and their alloys is composed of a pair of upper elliptical rollers (1), a lower elliptical roller (2) and an adjustable archway (3). The upper and lower elliptical rollers are mounted on the adjustable archway and are horizontally placed symmetrically up and down with the central axis (4) of the production system as the reference elevation. Several elliptical forming mechanisms are linked to form a multi-level system. Each pair of upper and lower elliptical rollers rolls the cladding metal substrate and limits the sandwich metal substrate and the core metal substrate so that they are symmetrically centered along the central axis of the production system. The spacing and the short axis length of each pair of upper and lower elliptical rollers decrease along the direction of travel of the composite workpiece (5) until the last pair of elliptical rollers eliminates the gap (9) between the cladding metal substrate (6), the sandwich metal substrate (7) and the core metal substrate (8) along the direction of the upper and lower elliptical rollers.

[0009] The center of the ellipse major axis of the ellipse forming mechanism is positioned with the central axis of the production system, so that the ellipse forming mechanism can correct the horizontal displacement of the composite workpiece.

[0010] The oval forming mechanism is in an inert gas atmosphere.

[0011] The heater first heats the elliptical forming mechanism, and then controls and keeps the temperature, so that the elliptical roller is in a set temperature range. The temperature-controlled circulating water (10) flows through the upper elliptical roller axis shunt pipe (11) and the lower elliptical roller axis shunt pipe (12), so that the temperature of the elliptical forming mechanism is constant, and the elliptical roller and the cladding layer metal substrate, the cladding layer metal substrate and the sandwich metal substrate, and the sandwich metal substrate and the core metal substrate exchange heat with each other to achieve thermal equilibrium, and establish a multi-metal isothermal composite working condition.

[0012] After the external power passes through the reducer to match the speed ratio, it is connected to each pair of upper and lower elliptical rollers through an overrunning clutch and a coupling. The non-contact infrared temperature measuring device continuously detects the surface temperature of the composite metal, the contact encoder device continuously detects the composite forming speed, and the PLC programming and control system outputs the temperature and speed feedback to control the temperature of the elliptical forming mechanism and the speed of the composite workpiece, and establishes an isothermal composite working condition for preparing fully coated multi-metal composite pipes, composite rods, composite plates and strips, composite busbars and composite profiles, realizing the isothermal composite process of multi-metal and the quality control of metal composite products.

[0013] The characteristics of multi-metal isothermal composite are continuous production line preparation, high precision control of temperature, speed and deformation rate, control of the configuration of metal compounds in the multi-metal interface diffusion transition zone, and control of grain size and grain boundary distribution.

[0014] The production efficiency of using an elliptical forming mechanism to assist in the preparation of multi-component metal composite materials is high, and high-quality metal-based composite materials can be prepared efficiently and continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1The present invention is a front view of a pair of upper elliptical rollers, a lower elliptical roller and an adjustable archway used in the isothermal composite elliptical forming mechanism of multiple metals and their alloys.

[0016] Figure 2 It is a top view of the linkage of the isothermal composite multi-pass elliptical forming mechanism for multi-element metals and their alloys of the present invention.

[0017] Figure 3 The present invention is applied to isothermal composite of multiple metals and their alloys, and a schematic diagram of the elliptical forming mechanism acting on the cladding layer metal base, the sandwich layer metal base and the core layer metal base. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Embodiment: The elliptical forming mechanism used for isothermal composite of multi-metal and alloy materials is composed of a pair of upper elliptical rollers, a lower elliptical roller, and an adjustable arch. Each pair of upper and lower elliptical rollers is assembled on the adjustable arch, and is placed horizontally up and down with the central axis of the production system as the reference elevation.

[0020] The center of the elliptical major axis of the elliptical forming mechanism is positioned with the central axis of the production system to position the cladding layer metal substrate, limit the sandwich metal substrate and the core metal substrate, so that they are centered along the central axis of the production system, and correct the horizontal displacement of the composite workpiece during the multi-metal composite continuous forming process.

[0021] Several elliptical forming mechanisms are combined to form a multi-stage system. The distance between each pair of upper and lower elliptical rollers and the length of the minor axis decrease along the direction of the workpiece until the last pair of elliptical rollers completely eliminates the gap between the cladding layer metal substrate, the sandwich layer metal substrate and the core layer metal substrate along the direction of the upper and lower elliptical rollers.

[0022] The oval forming mechanism is in an inert gas protective atmosphere.

[0023] After the external power matches the speed through the reducer, it is connected to the upper elliptical roller and the lower elliptical roller through the overrunning clutch and the coupling respectively.

[0024] The isothermal composite process of multi-element metals and their alloy materials is as follows: in an inert gas protection atmosphere, the continuous production line and the multi-element metal composite substrate reach thermal equilibrium, the front-stage system of the production line continuously coats the sandwich metal substrate with the core metal substrate to form a composite core blank, and then the coated metal substrate continuously coats the composite core blank to prepare a multi-element metal composite coated blank. The composite coated blank completes plastic deformation under the action of calendering with a large deformation rate, and the binary metal interface atoms diffuse with each other under the action of the temperature field to form a diffusion transition layer with a metal bond structure, and fully coated multi-element metal composite tubes, composite rods, composite plates and strips, composite busbars and composite profiles are prepared.

[0025] The elliptical forming mechanism is used to position the cladding metal substrate and limit the sandwich metal substrate and the core metal substrate so that they are centered along the central axis of the production system. The spacing between each pair of upper and lower elliptical rollers and the length of the elliptical minor axis decreases along the direction of the workpiece travel. The elliptical forming mechanism gradually compresses the gap between the cladding metal substrate, the sandwich metal substrate and the core metal substrate until the gap is completely eliminated.

[0026] The heater heats the elliptical forming mechanism to keep the upper and lower elliptical rollers in the set temperature range. The temperature-controlled circulating water flows through the axial shunt pipes of the upper and lower elliptical rollers to maintain the temperature of the elliptical forming mechanism constant. The upper and lower elliptical rollers exchange heat with the cladding metal substrate, the sandwich metal substrate and the core metal substrate to achieve thermal equilibrium and establish an isothermal composite working condition.

[0027] The non-contact infrared temperature measuring device continuously detects the surface temperature of the composite metal, the contact encoder device continuously detects the composite forming speed, the PLC programming and automatic control system continuously outputs temperature and speed feedback, modulates the temperature of the elliptical forming mechanism and the speed of the composite workpiece, and establishes isothermal composite working conditions for preparing fully coated multi-metal composite pipes, composite rods, composite strips, composite busbars and composite profiles, realizing the quality control of the multi-metal isothermal composite process and metal composite products.

[0028] The isothermal method is a method of controlling the process, environment, and composite variables of multi-metal composites based on a short-process continuous automated production line. The isothermal composite continuous preparation of fully coated composite pipes, composite rods, composite strips, composite busbars, and composite profiles of multi-metal and alloy materials has high production efficiency, high control accuracy of metal interface composite temperature, and the prepared multi-metal matrix composite materials have the characteristics of high bonding strength, uniform layer thickness, and good consistency.

[0029] The above examples are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people who are familiar with the technical principles to fully understand the content of the present invention and implement it accordingly, and cannot be used to limit the scope of protection of the present invention. The implementation conditions adopted in the embodiments can be further adjusted according to the working conditions of specific tests or production, and the unspecified implementation conditions are usually the conditions in conventional experiments. The present invention and the claims described in the present invention can be used for many other purposes. Therefore, the present invention is not limited to the fields and uses described and will be applicable to other fields and uses. All equivalent transformations, decorations or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An isothermal composite forming method of multiple metals, characterized in that: The method is carried out by using an elliptical forming machine, which includes an elliptical forming mechanism, which is composed of a pair of upper elliptical rollers, a lower elliptical roller, and an adjustable archway. The upper and lower elliptical rollers are assembled on the adjustable archway and are placed horizontally up and down with the central axis of the production system as the reference elevation; several elliptical forming mechanisms are linked to form a multi-level system; the upper and lower elliptical rollers roll the cladding metal substrate and limit the sandwich metal substrate and the core metal substrate so that they are symmetrical and centered along the central axis of the production system; the spacing between each pair of upper and lower elliptical rollers and the length of the elliptical minor axis decrease along the direction of travel of the composite workpiece until the last pair of elliptical rollers eliminates the gap between the cladding metal substrate, the sandwich metal substrate and the core metal substrate along the direction of the upper and lower elliptical rollers; the heater heats the elliptical forming mechanism so that the elliptical roller is in a set temperature range; the temperature-controlled circulating water flows through the axial shunt pipes of the upper and lower elliptical rollers to keep the temperature of the elliptical forming mechanism constant; the elliptical forming mechanism is in an inert gas atmosphere; the external power matches the speed ratio through the reducer and is connected to each pair of upper and lower elliptical rollers through an overrunning clutch and a coupling; The elliptical forming mechanism continuously exchanges heat with the cladding layer metal substrate, the sandwich metal substrate and the core layer metal substrate to achieve thermal equilibrium and establish a multi-metal isothermal composite working condition. The isothermal composite working condition continuously monitors the surface temperature of the metal composite through a non-contact infrared temperature measuring device, continuously detects the composite forming speed through a contact encoder device, and the PLC programming and automatic control system outputs temperature and speed feedback, adjusts and controls the temperature of the elliptical forming mechanism and the speed of the composite workpiece, thereby realizing the isothermal composite process of the multi-metal and the quality control of the metal composite product.

2. The method according to claim 1, characterized in that The center of the elliptical major axis of the elliptical roller is positioned along the central axis of the production system to correct the horizontal displacement of the composite workpiece.

3. The method according to claim 1, characterized in that The front-stage system of the production line is to continuously coat the core metal substrate with the sandwich metal substrate to form a composite core blank, and then continuously coat the composite core blank with the coating layer metal substrate to prepare a multi-metal composite coating blank.

4. The method according to claim 1, characterized in that The multi-metal composite clad billet completes plastic deformation under large deformation rate rolling, and the binary metal interface atoms diffuse with each other under the action of the temperature field to form a diffusion transition layer with a metal bond structure, forming fully coated multi-metal composite tubes, composite rods, composite plates and strips, composite busbars and composite profile products.

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