Functional-area-divided composite material and preparation method thereof
Through the preparation method of functional zone composite materials, combined with outer metal and inner core functional materials, the problem of insufficient performance of existing composite materials is solved, and a multifunctional material combination is realized, which reduces costs and improves applicability.
Patent Information
- Application Number
- CN202411418141.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2024-12-20
AI Technical Summary
Existing composite materials lack materials with excellent comprehensive performance in electronics, aviation, ships and other fields, and cannot achieve electrical conductivity, thermal conductivity, corrosion resistance and high strength at the same time.
The preparation method of functional zone composite material is adopted, through the composite of outer metal material and inner core functional material, including the design and selection of outer metal shell with openings and inner core functional area materials, for heating and compression, and reducing the cross-section. Open welding and rolling are carried out to form a multifunctional composite material.
It realizes a combination of many excellent functions such as low cost, high conductivity, thermal conductivity, wear resistance, thermal sensitivity, etc., reduces material production costs, improves applicability and scope of use, and is suitable for wires, conductive rows, thermally conductive materials and structural rods. and other fields.
Smart Images
Figure CN119170327A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of composite material development, and more specifically, to a composite material with functional areas and a preparation method thereof. Background Art
[0002] With the development of the national economy and society, the demand for new multifunctional materials is increasing. Many new materials that combine metal and metal, metal and non-metal have appeared on the market, such as steel and aluminum composite plates, copper and aluminum composite flats, stainless steel and carbon steel composite plates, steel and rubber composite strips, etc. These composite materials solve many requirements for use in engineering and construction, but there are still certain problems in energy conservation and consumption reduction and high-quality development. For example: copper-aluminum composite conductive bars save material costs, but their thermal conductivity is reduced; steel and rubber composite strips solve the problem of corrosion resistance, but the rubber material has no electrical conductivity. In the fields of electronics, aviation, ships, etc., a material with excellent comprehensive performance, electrical conductivity, thermal conductivity, corrosion resistance, and high strength is needed.
[0003] Based on the above statements, the present application provides a composite material with functional areas and a preparation method thereof. Summary of the invention
[0004] In order to solve the problems of poor comprehensive performance and large number of consumables of composite materials in the prior art, the present application provides a composite material with functional areas and a preparation method thereof.
[0005] In the first aspect, the present application provides a composite material with functional areas, which adopts the following technical solution:
[0006] A composite material with functional areas and a preparation method thereof, which is composited by an outer metal material and an inner core functional material.
[0007] In the second aspect, the present application provides a method for preparing a composite material with functional areas and a method for preparing the same, using the following technical solution:
[0008] A method for preparing a composite material with functional areas, comprising the following steps:
[0009] S1. Select the outer metal shell with upper opening and the material corresponding to the inner core functional area according to the design;
[0010] S2, placing the inner core material into the outer metal shell to form a primary composite;
[0011] S3, heating and pressing the primary composite body to reduce the cross section to form a circular or elliptical composite body;
[0012] S4, performing opening welding on the elliptical composite body to produce a welded elliptical composite body;
[0013] S5. According to the shape of the finished product, the welded composite body is rolled into a flat, round, square or other shape to produce a composite material with different functional areas.
[0014] Preferably, in step S1, the outer metal material shell can be formed by curling a single layer or multiple layers of composite steel strip.
[0015] Preferably, the outer metal material shell in step S1 is one or more composite materials of steel, copper, silver, aluminum, and stainless steel.
[0016] Preferably, the outer metal material shell with the upper opening in step S1 is circular or elliptical in shape, and the width of the upper opening is one percent to one fifth of the circumference of the shell.
[0017] Preferably, the inner core functional material in step S1 can be designed into 1-10 different functional areas according to the requirements of performance.
[0018] Preferably, the inner core functional material in step S1 is in powder or rod shape, such as metal, powdered metal, non-metal, industrial waste, sand, slag, ceramic powder, diamond powder, graphene or their composite materials. The rod shape is hollow or solid.
[0019] Preferably, in step S2, a positioning block is provided at the end or inner cavity of the outer metal material shell to support or position the inner core.
[0020] Preferably, in step S2, a feeder is used to sequentially add different functional materials into corresponding positions in the shell along the upper opening or end surface of the shell.
[0021] Preferably, in step S2, powdered functional materials are filled between different physical functional areas.
[0022] Preferably, in step S3, the functional material is dried by utilizing the deformation heat of roller bending, stamping or hydraulic pressure, and steam overflows from the opening to prevent explosion.
[0023] Preferably, the heating temperature in step S3 is 30-150°C.
[0024] Preferably, the opening welding in step S4 is performed by online continuous welding.
[0025] Preferably, annealing and cutting to length are performed in step S5.
[0026] In summary, this application has the following beneficial effects:
[0027] 1. The functional area composite material of the present application is composed of an outer metal material and an inner core functional material. Through the mutual coordination of multiple materials, the equivalent replacement of the excellent performance of precious metals with low-cost materials is achieved, further reducing the production cost of the material.
[0028] 2. The functionally zoned composite material of this application can simultaneously realize the physical combination of multiple excellent functions, and can optimize the functions of high conductivity, thermal conductivity, wear resistance, thermal sensitivity, superconductivity, etc., with simple process, flexible zoning and stable performance.
[0029] 3. This application adopts the composite use of multiple internal functional materials, which further improves the applicability and scope of use of composite materials and can meet the requirements of complex environments and special functions for the various performance of the materials used.
[0030] 4. The functional area composite material prepared in this application consumes less energy in the preparation process, can utilize industrial waste, and can produce multi-functional area composite materials that meet market demand. It can be used in through-wires, busbars, conductive bars, thermal conductive materials, and replaces steel bars and structural rods. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 This is a schematic diagram of the cross-sectional changes of the preparation process of the composite material with different functional areas according to the embodiment of the present application, wherein 1, outer metal layer; 2, first functional area; 3, second functional area; 4, third functional area; 5, welding part;
[0032] Figure 2 This is a cross section of the composite material with functional areas prepared in Example 1 of the present application;
[0033] Figure 3 This is the cross section of the functional area composite material prepared in Example 2 of the present application. DETAILED DESCRIPTION
[0034] The present application is further described in detail below with reference to the embodiments.
[0035] Embodiment 1-3 provides a composite material with functional areas and a preparation method thereof.
[0036] Example 1
[0037] A composite material with different functional areas, which is composed of an outer metal material and an inner core functional material. The outer metal material is copper. The functional area materials are aluminum chips, low-carbon steel pipes, and fly ash. The target finished product is a straight strip with a width of 60mm and a thickness of 6mm.
[0038] A method for preparing a composite material with functional areas:
[0039] S1. Select a copper tube with a diameter of 80mm, a wall thickness of 5mm, a length of 6m, and an opening of 10mm with an upper opening as the outer metal shell;
[0040] Select sufficient aluminum shavings, low-carbon steel pipes, and fly ash as functional area materials: the first functional area material is aluminum shavings with a particle size of 0.25-5mm; the second functional area material is low-carbon steel pipes with a diameter of 50mm, a wall thickness of 1mm, and a length of 6 meters; the third functional area material is fly ash with a particle size of 100-1500um.
[0041] S2, the first step: on the outer surface of the 50mm diameter low-carbon steel in the second functional area, weld a copper semicircle ring with a diameter of 68mm every 1m; insert the low-carbon steel pipe of the second functional area with the semicircle into the outer metal copper shell from the end face of the outer metal shell; weld copper end plates with a diameter of 69mm at both ends of the copper shell for blocking, and a circular hole with a diameter of 20mm is provided in the center of the end plate;
[0042] Step 2: Fill the copper shell with aluminum chips from the first functional area from the opening of the outer metal shell;
[0043] Step 3: Fill the fly ash from the third functional area into the low carbon steel pipe from the central circular hole of the end plate to form a primary composite body;
[0044] S3, placing the primary composite body into a hydraulic press with a heater, first heating and drying it, the heating temperature is 120°C, the heating time is 20 minutes, water vapor overflows from the opening of the copper shell and the circular hole of the end plate to prevent explosion; then the circular hole is blocked; the primary composite body is pressed down, and while reducing the cross section, the opening of the copper shell is reduced to 0.5mm to 2mm, and an elliptical composite body is made;
[0045] S4, welding the opening of the elliptical composite body, using an automatic welding machine for online welding to form a welded elliptical composite body;
[0046] S5. The welded elliptical composite body is sent to a horizontal-vertical alternating cold rolling unit, which has 10 stands and a finished product rolling mill line speed of 1.5 m / s. After 10 passes of rolling, a straight strip of functionally divided flat composite material with a width of 60 mm and a thickness of 6 mm is produced.
[0047] The flat composite material is annealed at a temperature of 350°C, and then cut to length to produce straight strips of composite materials with different functional areas, such as conductive bars, for delivery.
[0048] In this embodiment, the first functional zone material and the second functional zone material can be eliminated, the first and third steps in S2 can be eliminated, the first functional zone aluminum chips in the second step can be replaced with fly ash in the third functional zone, and the composite conductive bar can be directly produced from the outer metal material and the third functional zone material according to the above method.
[0049] Example 2
[0050] A composite material with different functional areas, which is composed of an outer metal material and an inner core functional material. The outer metal material is 304 stainless steel strip, the first functional area material is slag powder, the second functional area material is low carbon steel strip, and the third functional area material is sand and gravel powder. The target finished product is a straight bar with a diameter of 25mm and corrosion-resistant and easy-to-cut steel bars for different functional areas.
[0051] A method for preparing a composite material with functional areas:
[0052] S1. Select the outer metal material: 304 stainless steel coil with a width of 157mm and a thickness of 2.5mm;
[0053] Select functional area materials: the material for the first functional area is slag powder with a particle size of 0.5-6mm; the material for the second functional area is low-carbon steel strip with a width of 63mm and a thickness of 1mm; the material for the third functional area is sand and gravel slag powder with a particle size of 0.5-3mm.
[0054] S2, the first step: send the low-carbon steel strip of the second functional area to the unwinding, roll bending and forming unit. After unwinding, first make a round body with an opening on the strip in the roll bending unit, with an opening width of 3mm to 5mm; then dry the sand and gravel powder of the third functional area online at a drying temperature of 120 degrees. After drying, add the sand and gravel powder into the round body with an opening on the strip and send it to the forming unit online. After reducing the opening and welding the opening, send it to the coiler to form a circular composite of the second and third functional areas, with a diameter of 20mm.
[0055] Step 2: Feed the outer metal 304 stainless steel strip into the unwinding and roll bending unit. After unwinding, first make a circular body with an opening on the strip in the roll bending unit, with an opening width of 5mm to 10mm; then weld a 50mm diameter circular end plate at the head of the circular body with an opening on the strip, weld the head of the circular complex of the second and third functional areas at the designated position on the inner side of the end plate, and set a pressure wheel at a position 1m to 2m away from the inner side of the end plate, so that the circular complex of the second and third functional areas is always located at the designated position of the inner cavity of the circular body with an opening on the strip, and will be continuously loaded into the circular body during the forward movement of the circular body); add the slag powder of the first functional area into the circular body to make a primary complex.
[0056] S3, heating and drying the primary composite body at a temperature of 110°C for 10 minutes, with water vapor overflowing from the opening to prevent explosion; then sending the primary composite body to a molding unit to reduce the cross section of the primary composite body and reduce the opening to 0.5mm to 1mm, to form an elliptical or circular composite body with a diameter of 50mm;
[0057] S4, welding the opening of the elliptical or circular composite body, and using an automatic welding machine for online welding to form a welded composite body;
[0058] S5. The welded elliptical or circular composite body is heated online to a temperature of 820°C, and then sent to a hot rolling unit for 8 passes of rolling to form a 25mm diameter composite steel bar with different functional areas. Then it is cut to a fixed length as required to form a straight bar of composite corrosion-resistant and easy-to-cut steel bar with different functional areas for delivery.
[0059] In this embodiment, when the strength requirement for the corrosion-resistant and easy-to-cut steel bars is less than 400 MPa, the second functional zone material and the third functional zone material can be cancelled, and the first step in S2 can be cancelled. The corrosion-resistant and easy-to-cut steel bars can be directly produced by the outer metal material and the first functional zone material according to the above method. Ordinary easy-to-cut steel bars or through-wires and other products can also be made by replacing the outer metal material and the first functional zone material.
[0060] Example 3
[0061] A composite material with functional areas, which is composed of an outer metal material and an inner core functional material. The outer metal material is stainless steel. The functional area materials are granite powder, superconducting copper rods, and aluminum rods. The target finished product is a 10mm diameter straight strip composite special connecting wire with functional areas.
[0062] A method for preparing a composite material with functional areas:
[0063] S1. Select a stainless steel tube with a diameter of 30 mm, a wall thickness of 1.2 mm, and an opening of 3 mm as the outer metal shell;
[0064] The material of the first functional zone is selected as granite powder with a particle size of 0.15-1 mm, the material of the second functional zone is a superconducting copper rod with a diameter of 3 mm, and the material of the third functional zone is an aluminum rod with a diameter of 5 mm.
[0065] S2, the first step: select a plastic disc with a diameter of 26mm and a thickness of 1mm, and set circular holes with diameters of 3.2 and 5.2mm at the corresponding positions on the disc. Put the disc on the second functional area material and the third functional area material, put one on every 1m and fix it, then insert it into the outer metal shell, and weld the end plates with a diameter of 30mm at both ends of the stainless steel shell to seal it;
[0066] Step 2: Fill the shell with granite powder from the first functional area through the opening of the outer metal shell to form a primary composite body;
[0067] S3, placing the primary composite body into a hydraulic press with a heater, heating and drying, the heating temperature is 120°C, the heating time is 15 minutes, and water vapor overflows from the shell opening to prevent explosion; pressing the primary composite body, while reducing the cross section, the shell opening is reduced to 0.5mm to 1mm, and an elliptical or circular composite body is formed;
[0068] S4, welding the opening of the composite body, using an automatic welding machine for online welding to form a welded composite body;
[0069] S5. The welded composite is sent to a horizontal-vertical alternating cold rolling unit, which has 16 stands and a finished product rolling mill line speed of 1.5 m / s. After 16 passes of rolling, a straight strip of a composite material with functional areas having a diameter of 10 mm is produced.
[0070] The composite material is annealed at a temperature of 250°C and cut to length as required to produce straight strips of special connecting wires for different functional areas.
[0071] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.
Claims
1. A composite material with functional areas, It is characterized in that It is composed of outer metal material and inner core functional material.
2. A method for preparing the composite material with functional areas according to claim 1, It is characterized in that The following steps are involved: S1. Select the outer metal shell with upper opening and the material corresponding to the inner core functional area according to the design; S2, placing the inner core material into the outer metal shell to form a primary composite; S3, heating and pressing the primary composite body to reduce the cross section to form a circular or elliptical composite body; S4, performing opening welding on the elliptical composite body to produce a welded elliptical composite body; S5. According to the shape of the finished product, the welded composite body is rolled into a flat, round, square or other shape to produce a composite material with different functional areas.
3. The method for preparing the composite material with functional areas according to claim 2, It is characterized in that The outer metal material shell in step S1 can be formed by curling a single layer or multiple layers of composite strip steel; the outer metal material shell in step S1 is one or more composite materials of steel, copper, silver, aluminum, and stainless steel.
4. The method for preparing the composite material with functional areas according to claim 2, It is characterized in that In the step S1, the outer metal material shell with the upper opening is circular or elliptical in shape, and the width of the upper opening is 1% to 1 / 5 of the circumference of the shell.
5. The method for preparing the composite material with functional areas according to claim 2, It is characterized in that The inner core functional material in step S1 can be designed into 1-10 different functional areas according to the requirements of performance; the inner core functional material in step S1 is powdery or rod-shaped, such as metal, powdered metal, non-metal, industrial waste, sand, slag, ceramic powder, diamond powder, graphene or composite material; the rod-shaped is hollow or solid.
6. The method for preparing the composite material with functional areas according to claim 2, It is characterized in that In the step S2, a positioning block is arranged at the end or inner cavity of the outer metal material shell to support or position the inner core; in the step S2, a feeder is used to sequentially add different functional materials to corresponding positions in the shell along the opening or end surface of the shell.
7. The method for preparing the composite material with functional areas according to claim 2, It is characterized in that In step S3, the functional material is dried by using the deformation heat of roller bending, stamping or hydraulic pressure, and steam overflows from the opening to prevent explosion.
8. The method for preparing the composite material with functional areas according to claim 2, It is characterized in that The heating temperature in step S3 is 30-150°C.
9. The method for preparing the composite material with different functional areas according to claim 2, It is characterized in that In step S4, the opening welding is performed by online continuous welding.
10. The method for preparing the composite material with functional areas according to claim 2, It is characterized in that Annealing and cutting are performed in step S5.