A method for manufacturing a metal solid-liquid composite plate strip

Abstract

The application provides a preparation method of a metal solid-liquid composite plate strip, comprising: a smelting process, in which a cast ingot containing a first metal is subjected to smelting treatment to obtain a molten pool; a refining process, in which a refining agent and an inert gas are added to the molten pool for refining treatment, and the metal solution containing the first metal is obtained after the refining treatment and standing; a grain refinement process, in which a grain refinement agent is added to the metal solution containing the first metal for grain refinement treatment, and the metal solution after the grain refinement process is obtained; a continuous casting process, in which the metal solution after the grain refinement process is contacted with a base layer plate strip and subjected to continuous casting treatment, so that a cladding layer is formed on the surface of the base layer plate strip, and a composite plate strip blank is obtained; and a rolling process, in which the composite plate strip blank is subjected to rolling treatment, and the composite plate strip is obtained. The composite plate strip prepared by the preparation method has good bending performance and bonding strength, and has a long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of composite plates and strips, and in particular to a method for preparing a metal solid-liquid composite plate and strip. Background Art

[0002] Composite plates and strips generally refer to plates and strips produced by metallurgically combining two or more metals with different materials and properties through composite processing. This can overcome some of the shortcomings of a single material, give full play to the advantages of different materials, and make the composite plates and strips have good comprehensive properties, such as high specific strength, good electrical conductivity, thermal conductivity, corrosion resistance, shock absorption, wear resistance, etc.

[0003] However, in the related art, the bending performance and bonding strength of the composite strip are insufficient, resulting in a reduced service life of the composite strip. Summary of the Invention

[0004] The present invention provides a method for preparing a metal solid-liquid composite plate and strip. The composite plate and strip prepared by the preparation method has good bending performance and bonding strength, so that it has a long service life.

[0005] An embodiment of the present invention provides a method for preparing a metal solid-liquid composite strip, comprising:

[0006] a smelting step of smelting the ingot containing the first metal at 700° C. to 750° C. to obtain a molten pool;

[0007] a refining step of adding a refining agent and an inert gas into the molten pool for refining treatment, and allowing the molten pool to stand after the refining treatment to obtain the metal solution containing the first metal;

[0008] a grain refining step of adding a grain refining agent to the metal solution containing the first metal to perform grain refining treatment to obtain a metal solution after the grain refining step;

[0009] a continuous casting process, wherein the molten metal after the grain refinement process is brought into contact with a base plate strip and continuously cast to form a coating on the surface of the base plate strip to obtain a composite plate strip blank, wherein the width of the composite plate strip blank is 10 mm to 2000 mm, and the thickness of the composite plate strip blank is 2 mm to 100 mm;

[0010] The composite plate strip blank is subjected to rolling treatment to obtain the composite plate strip, wherein the rolling pressure is 5000N to 5000000N, the rolling temperature is 0°C to 500°C, and the rolling tension is 0N to 2000000N.

[0011] In some embodiments of the present invention, the first metal comprises aluminum;

[0012] And / or, the base plate strip includes at least one of aluminum, copper, titanium, iron and alloys thereof.

[0013] In some embodiments of the present invention, in the grain refining process, the grain refiner includes one or more of titanium boride, aluminum boride, and Al-RE-B refiner, wherein RE is one or more of aluminum and rare earth metal elements.

[0014] It comprises aluminum titanium boron wire, and the addition amount A of the aluminum titanium boron wire and the mass B of the first metal in the molten pool satisfy: 0.1%≤A / B≤3%.

[0015] In some embodiments of the present invention, the grain refiner includes two or more of Al-Ce-B, Al-YB and aluminum titanium boron wire.

[0016] In some embodiments of the present invention, the molten pool after the refining treatment is allowed to stand at 700° C. to 750° C. for 15 min to 45 min.

[0017] In some embodiments of the present invention, the continuous casting process includes:

[0018] a texturing step of texturing the strip containing the second metal to obtain a textured strip;

[0019] a cleaning step of cleaning the roughened plate strip to obtain a cleaned plate strip;

[0020] In the continuous casting step, the cleaned plate and strip are brought into contact with the metal solution after the grain refinement process at a temperature of 25° C. to 500° C. and continuously cast to obtain a composite plate and strip blank.

[0021] In some embodiments of the present invention, the continuous casting speed is 200 mm / min to 3000 mm / min.

[0022] In some embodiments of the present invention, during the rolling process, the peeling force of the composite strip at room temperature is 80 N / mm to 200 N / mm.

[0023] In some embodiments of the present invention, the preparation method further comprises:

[0024] The edge trimming process is to perform edge trimming on the edge of the composite plate strip.

[0025] The preparation method of the metal solid-liquid composite provided by the present invention can make the coating formed on the base plate strip have smaller grains to enhance its bonding strength with the surface of the base plate strip, while also making it have good bending performance through a smelting process, a refining process, a grain refinement process, a continuous casting process and a rolling process.

[0026] The above description is only an overview of the technical solution of this specification. In order to more clearly understand the technical means of this specification, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of this specification more obvious and easy to understand, the specific implementation methods of this specification are listed below. DETAILED DESCRIPTION

[0027] The "ranges" disclosed herein are defined in terms of lower and upper limits. A given range is defined by selecting a lower limit and an upper limit, and the selected lower and upper limits define the boundaries of the particular range. Ranges defined in this manner may be inclusive or exclusive and may be arbitrarily combined, i.e., any lower limit may be combined with any upper limit to form a range.

[0028] Unless otherwise specified, the terms used in the present invention have the common meanings that are commonly understood by those skilled in the art.

[0029] Unless otherwise specified, the values ​​of the parameters mentioned in the present invention can be measured using various test methods commonly used in the art, for example, they can be measured according to the test methods given in the embodiments of the present invention.

[0030] An embodiment of the present invention provides a method for preparing a metal solid-liquid composite strip, comprising:

[0031] S100, a smelting step of smelting the ingot containing the first metal at 700° C. to 750° C. to obtain a molten pool;

[0032] S200, a refining step of adding a refining agent and an inert gas to the molten pool for refining treatment, and allowing the molten pool to stand after the refining treatment to obtain the metal solution containing the first metal;

[0033] S300, a grain refining step of adding a grain refining agent to the metal solution containing the first metal to perform grain refining treatment to obtain a metal solution after the grain refining step;

[0034] S400, a continuous casting process, wherein the molten metal after the grain refinement process is brought into contact with the base plate strip and continuously cast to form a coating on the surface of the base plate strip to obtain a composite plate strip blank, wherein the width of the composite plate strip blank is 10 mm to 2000 mm, and the thickness of the composite plate strip blank is 2 mm to 100 mm;

[0035] S500, rolling process, rolling the composite plate strip blank to obtain a composite plate strip, wherein the rolling pressure is 5000N~5000000N, the rolling temperature is 0℃~500℃, and the rolling tension is 0N~2000000N.

[0036] The preparation method of the metal solid-liquid composite provided by the present invention can make the coating formed on the base plate strip have smaller grains to enhance its bonding strength with the surface of the base plate strip, while also making it have good bending performance through a smelting process, a refining process, a grain refinement process, a continuous casting process and a rolling process.

[0037] In some embodiments of the present invention, the first metal comprises aluminum; and / or the base plate comprises at least one of aluminum, copper, titanium, iron, and alloys thereof. By selecting these metals, copper-aluminum composite plates, steel-aluminum composite plates, titanium-aluminum composite plates, aluminum-aluminum composite plates, and the like can be produced, resulting in a composite plate with excellent application scenarios.

[0038] In some embodiments of the present invention, the ingot comprises an aluminum ingot.

[0039] In the embodiment of the present invention, the refining agent can be selected according to the type of the ingot. For example, if the ingot is an aluminum ingot, the refining agent can be an aluminum alloy refining agent, and the aluminum alloy refining agent can be an aluminum alloy refining agent of CAS: 67-72-1.

[0040] In some embodiments of the present invention, in the grain refining process, the grain refiner includes one or more of titanium boride, aluminum boride, and Al-RE-B refiner, wherein RE is one or more of aluminum and rare earth metal elements.

[0041] In some embodiments of the present invention, the grain refiner may include aluminum titanium boron wire. The addition of aluminum titanium boron wire can further reduce the size of the grains in the cladding layer, resulting in a larger number of grains per unit area and a larger number of grains with different orientations surrounding each grain. This not only enhances resistance to plastic deformation but also allows deformation to occur across a larger number of grains, resulting in more uniform deformation and reduced stress concentration, thereby enhancing the bending performance of the composite strip. Furthermore, the smaller grains provide a larger specific surface area, which in turn increases the contact area between the cladding layer and the base strip, thereby enhancing the bonding strength of the composite strip.

[0042] In order to make the grains in the cladding layer have an appropriate grain size, the amount of the grain refiner added can be optimized based on the mass of the first metal in the grains.

[0043] In some embodiments of the present invention, the addition amount A of the grain refiner and the mass B of the first metal in the molten pool satisfy the following relationship: 0.1%≤A / B≤3%.

[0044] In some embodiments of the present invention, the grain refiner includes two or more of Al—Ce—B, Al—YB, and aluminum titanium boron wire.

[0045] In the above embodiment, the reasonable combination of the above grain refiners can help to further reduce the size of the grains in the cladding layer, so that the bending performance and bonding strength of the composite plate strip can be further improved.

[0046] In some embodiments of the present invention, the grain refiner includes Al-Ce-B and aluminum titanium boron wire, and the mass ratio of Al-Ce-B to the aluminum titanium boron wire is 1:(4-6).

[0047] In some embodiments of the present invention, the grain refiner includes Al-YB and aluminum titanium boron wire, and the mass ratio of Al-YB to aluminum titanium boron wire is 1:(1-2).

[0048] In some embodiments of the present invention, the grain refiner includes Al-Ce-B, Al-YB and aluminum titanium boron wire, and the mass ratio of Al-Ce-B, Al-YB and aluminum titanium boron wire is 1:3:(3~6).

[0049] In some embodiments of the present invention, the molten pool after the refining treatment is allowed to stand at 700° C. to 750° C. for 15 min to 45 min.

[0050] In some embodiments of the present invention, the continuous casting process includes:

[0051] S410, a texturing step of texturing the strip containing the second metal to obtain a textured strip;

[0052] S420, a cleaning step of cleaning the roughened plate strip to obtain a cleaned plate strip;

[0053] S430, continuous casting step, contacting the cleaned plate and strip with the metal solution after the grain refinement process at 25°C to 500°C and performing continuous casting treatment to obtain a composite plate and strip blank.

[0054] In the above embodiment, the texturing process in S410 may be performed by methods well known in the art, such as mechanical texturing, chemical texturing, or laser texturing. The cleaning process in S420 may be performed by ultrasonic cleaning or laser cleaning.

[0055] In some embodiments of the present invention, the continuous casting speed is 200 mm / min to 3000 mm / min.

[0056] In some embodiments of the present invention, the rolling speed is 1000 mm / min to 5000 mm / min.

[0057] In some embodiments of the present invention, during the rolling process, the peeling force of the composite strip at room temperature is 80 N / mm to 200 N / mm.

[0058] In some embodiments of the present invention, the preparation method further comprises:

[0059] S600, trimming process, trimming the edges of the composite strip.

[0060] The following embodiments describe the present disclosure in more detail, and these embodiments are intended to be illustrative only, as various modifications and variations within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise stated, all parts, percentages, and ratios reported in the following embodiments are by mass, and all reagents used in the embodiments are commercially available or synthesized according to conventional methods and can be used directly without further processing, and the instruments used in the embodiments are commercially available.

[0061] Example 1

[0062] This embodiment provides a method for preparing a metal solid-liquid composite strip, comprising:

[0063] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0064] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0065] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0066] 5 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700° C. after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0067] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone the grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0068] The composite strip blank is subjected to cold rolling to obtain a composite strip, wherein the rolling pressure is 5000 N, the rolling speed is 2000 mm / min, the rolling temperature is 100° C., and the rolling tension is 10000 N;

[0069] The excess aluminum and poorly composited edges on both sides of the composite plate strip are cut off.

[0070] Example 2

[0071] This embodiment provides a method for preparing a metal solid-liquid composite strip, comprising:

[0072] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0073] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0074] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0075] 10 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700° C. after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0076] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone the grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0077] The composite strip blank is subjected to cold rolling to obtain a composite strip, wherein the rolling pressure is 5000 N, the rolling speed is 2000 mm / min, the rolling temperature is 100° C., and the rolling tension is 10000 N;

[0078] The excess aluminum and poorly composited edges on both sides of the composite plate strip are cut off.

[0079] Example 3

[0080] This embodiment provides a method for preparing a metal solid-liquid composite strip, comprising:

[0081] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0082] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0083] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0084] 50 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700° C. after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0085] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone the grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0086] The above-mentioned composite plate and strip blank is cold rolled to obtain a composite plate and strip, wherein the rolling pressure is 5000N, the rolling speed is 2000mm / min, the rolling temperature is 100℃, and the rolling tension is 10000N; the excess aluminum and the poorly composited edge materials on both sides of the above-mentioned composite plate and strip are cut off.

[0087] Example 4

[0088] This embodiment provides a method for preparing a metal solid-liquid composite strip, comprising:

[0089] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0090] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0091] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0092] 100 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700° C. after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0093] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone the grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0094] The above-mentioned composite plate and strip blank is cold rolled to obtain a composite plate and strip, wherein the rolling pressure is 5000N, the rolling speed is 2000mm / min, the rolling temperature is 100℃, and the rolling tension is 10000N; the excess aluminum and the poorly composited edge materials on both sides of the above-mentioned composite plate and strip are cut off.

[0095] Example 5

[0096] This embodiment provides a method for preparing a metal solid-liquid composite strip, comprising:

[0097] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0098] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0099] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0100] 130 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700° C. after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0101] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone the grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0102] The above-mentioned composite plate and strip blank is cold rolled to obtain a composite plate and strip, wherein the rolling pressure is 5000N, the rolling speed is 2000mm / min, the rolling temperature is 100℃, and the rolling tension is 10000N; the excess aluminum and the poorly composited edge materials on both sides of the above-mentioned composite plate and strip are cut off.

[0103] Example 6

[0104] This embodiment provides a method for preparing a metal solid-liquid composite strip, comprising:

[0105] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0106] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0107] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0108] 150 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700° C. after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0109] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone the grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0110] The above-mentioned composite plate and strip blank is cold rolled to obtain a composite plate and strip, wherein the rolling pressure is 5000N, the rolling speed is 2000mm / min, the rolling temperature is 100℃, and the rolling tension is 10000N; the excess aluminum and the poorly composited edge materials on both sides of the above-mentioned composite plate and strip are cut off.

[0111] Example 7

[0112] This embodiment provides a method for preparing a metal solid-liquid composite strip, comprising:

[0113] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0114] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0115] The aluminum liquid was allowed to stand at 700°C for 30 minutes;

[0116] 130 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700° C. after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0117] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone a grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 1000 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0118] The above-mentioned composite plate and strip blank is cold rolled to obtain a composite plate and strip, wherein the rolling pressure is 5000N, the rolling speed is 2000mm / min, the rolling temperature is 100℃, and the rolling tension is 10000N; the excess aluminum and the poorly composited edge materials on both sides of the above-mentioned composite plate and strip are cut off.

[0119] Example 8

[0120] This embodiment provides a method for preparing a metal solid-liquid composite strip, comprising:

[0121] 5kg of aluminum ingot (Al 99.90) was heated to 750℃ for melting treatment to obtain an aluminum-containing molten pool;

[0122] 15g of refining agent (CAS: 67-72-1) was added into the aluminum-containing molten pool at 700℃ and argon was blown for refining treatment for 20min to remove gas and slag by stirring, to obtain an aluminum liquid;

[0123] The aluminum liquid was placed at 750℃ for 30min;

[0124] 130g of aluminum titanium boron wire (AlTi5B1) was added into the metal solution at 700℃ after standing for 10min for grain refinement treatment to obtain an aluminum liquid after the grain refinement process;

[0125] The copper plate strip was mechanically textured and then cleaned by ultrasonic wave, and the aluminum liquid at 700℃ after the grain refinement process was continuously cast on the copper plate strip at 200℃ through a casting system to obtain a composite plate strip blank, wherein the continuous casting speed was 2000mm / min, the width of the composite plate strip blank was 200mm, and the thickness of the composite plate strip blank was 10mm;

[0126] The composite plate strip blank was cold-rolled to obtain a composite plate strip, wherein the rolling pressure was 5000N, the rolling speed was 2000mm / min, the rolling temperature was 100℃, and the rolling tension was 10000N; the excess aluminum and the edge material of the composite plate strip were cut off.

[0127] Example 9

[0128] The embodiment provides a preparation method of a metal solid-liquid composite plate strip, comprising:

[0129] 5kg of aluminum ingot (Al 99.90) was heated to 750℃ for melting treatment to obtain an aluminum-containing molten pool;

[0130] 15g of refining agent (CAS: 67-72-1) was added into the aluminum-containing molten pool at 700℃ and argon was blown for refining treatment for 20min to remove gas and slag by stirring, to obtain an aluminum liquid;

[0131] The aluminum liquid was placed at 750℃ for 30min;

[0132] 130g of aluminum titanium boron wire (AlTi5B1) was added into the metal solution at 700℃ after standing for 10min for grain refinement treatment to obtain an aluminum liquid after the grain refinement process;

[0133] The copper plate strip is mechanically roughened, and then cleaned by ultrasonic wave. The 700℃ aluminum liquid after the grain refinement process is cast on the 200℃ copper plate strip through a casting system to obtain a composite plate strip blank, wherein the casting speed is 3000mm / min, the width of the composite plate strip blank is 200mm, and the thickness of the composite plate strip blank is 10mm.

[0134] The composite plate strip blank is cold-rolled to obtain a composite plate strip, wherein the rolling pressure is 5000N, the rolling speed is 2000mm / min, the rolling temperature is 100℃, and the rolling tension is 10000N. The excess aluminum on both sides of the composite plate strip and the edge material with poor compounding are cut off.

[0135] Example 10

[0136] The embodiment provides a preparation method of a metal solid-liquid composite plate strip, which comprises the following steps:

[0137] 5kg of aluminum ingot (Al99.90) is heated to 750℃ for smelting treatment to obtain an aluminum-containing molten pool.

[0138] 15g of a refining agent (CAS: 67-72-1) is added into the 700℃ aluminum-containing molten pool, and argon is blown for 20min for refining treatment to remove gas and slag by stirring, so as to obtain an aluminum liquid.

[0139] The aluminum liquid is placed at 750℃ for 30min.

[0140] 80g of aluminum titanium boron wire (AlTi5B1) and 50g of Al-Ce-B are added into the metal solution at 700℃ after standing for 20min for grain refinement treatment to obtain an aluminum liquid after the grain refinement process.

[0141] The copper plate strip is mechanically roughened, and then cleaned by ultrasonic wave. The 700℃ aluminum liquid after the grain refinement process is cast on the 200℃ copper plate strip through a casting system to obtain a composite plate strip blank, wherein the casting speed is 3000mm / min, the width of the composite plate strip blank is 200mm, and the thickness of the composite plate strip blank is 10mm.

[0142] The composite plate strip blank is cold-rolled to obtain a composite plate strip, wherein the rolling pressure is 5000N, the rolling speed is 2000mm / min, the rolling temperature is 100℃, and the rolling tension is 10000N.

[0143] The excess aluminum on both sides of the composite plate strip and the edge material with poor compounding are cut off.

[0144] Example 11

[0145] The embodiment provides a preparation method of a metal solid-liquid composite plate strip, which comprises the following steps:

[0146] 5 kg of aluminum ingot (Al 99.90) was heated to 750℃ for smelting treatment to obtain an aluminum-containing molten pool;

[0147] 15 g of refining agent (CAS: 67-72-1) was added to the aluminum-containing molten pool at 700℃ and argon was blown for 20 min for refining treatment to stir, degas and remove slag to obtain an aluminum liquid;

[0148] The aluminum liquid was placed at 750℃ for 30 min;

[0149] 80 g of aluminum titanium boron wire (AlTi5B1) and 50 g of Al-Y-B were added to the metal solution at 700℃ after standing for 20 min for grain refinement treatment to obtain an aluminum liquid after the grain refinement process;

[0150] The copper plate strip was mechanically roughened and then cleaned by ultrasonic wave, and the aluminum liquid at 700℃ after the grain refinement process was continuously cast on the copper plate strip at 200℃ through a casting system to obtain a composite plate strip blank, wherein the continuous casting speed was 1000 mm / min, the width of the composite plate strip blank was 200 mm, and the thickness of the composite plate strip blank was 10 mm;

[0151] The composite plate strip blank was cold-rolled to obtain a composite plate strip, wherein the rolling pressure was 5000 N, the rolling speed was 2000 mm / min, the rolling temperature was 100℃, and the rolling tension was 10000 N;

[0152] The excess aluminum and the edge material of the composite plate strip were cut off.

[0153] Example 12

[0154] The embodiment provides a preparation method of a metal solid-liquid composite plate strip, comprising:

[0155] 5 kg of aluminum ingot (Al 99.90) was heated to 750℃ for smelting treatment to obtain an aluminum-containing molten pool;

[0156] 15 g of refining agent (CAS: 67-72-1) was added to the aluminum-containing molten pool at 700℃ and argon was blown for 20 min for refining treatment to stir, degas and remove slag to obtain an aluminum liquid;

[0157] The aluminum liquid was placed at 750℃ for 30 min;

[0158] 80 g of aluminum titanium boron wire (AlTi5B1), 25 g of Al-Y-B and 25 g of Al-Y-B were added to the metal solution at 700℃ after standing for 20 min for grain refinement treatment to obtain an aluminum liquid after the grain refinement process;

[0159] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone a grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 1000 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0160] The composite strip blank is subjected to cold rolling to obtain a composite strip, wherein the rolling pressure is 5000 N, the rolling speed is 2000 mm / min, the rolling temperature is 100° C., and the rolling tension is 10000 N;

[0161] The excess aluminum and poorly composited edges on both sides of the composite plate strip are cut off.

[0162] Comparative Example 1

[0163] This comparative example provides a method for preparing a metal solid-liquid composite strip, comprising:

[0164] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0165] 15 g of a refining agent (CAS: 67-72-1) was added to the aluminum molten pool and argon was blown into it to perform stirring, degassing and deslagging to obtain aluminum liquid;

[0166] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0167] The copper strip is subjected to mechanical texturing treatment and then ultrasonic cleaning. The aluminum liquid after standing is continuously cast on the copper strip at 200°C through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0168] The composite strip blank is subjected to cold rolling to obtain a composite strip, wherein the rolling pressure is 5000 N, the rolling speed is 2000 mm / min, the rolling temperature is 100° C., and the rolling tension is 10000 N;

[0169] The excess aluminum and poorly composited edges on both sides of the composite plate strip are cut off.

[0170] Comparative Example 2

[0171] This comparative example provides a method for preparing a metal solid-liquid composite strip, comprising:

[0172] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0173] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0174] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0175] 3 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700°C after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0176] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone the grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0177] The composite strip blank is subjected to cold rolling to obtain a composite strip, wherein the rolling pressure is 5000 N, the rolling speed is 2000 mm / min, the rolling temperature is 100° C., and the rolling tension is 10000 N;

[0178] The excess aluminum and poorly composited edges on both sides of the composite plate strip are cut off.

[0179] Comparative Example 3

[0180] This comparative example provides a method for preparing a metal solid-liquid composite strip, comprising:

[0181] 5 kg of aluminum ingot (Al99.90) was heated to 750°C for smelting to obtain an aluminum-containing molten pool;

[0182] 15 g of a refining agent (CAS: 67-72-1) was added to a 700° C. aluminum-containing molten pool and argon was blown into the molten pool for 20 minutes to perform stirring, degassing, and deslagging to obtain aluminum liquid.

[0183] The aluminum liquid was allowed to stand at 750°C for 30 minutes;

[0184] 160 g of aluminum titanium boron wire (AlTi5B1) was added to the metal solution at 700° C. after standing for 10 minutes to obtain aluminum liquid after the grain refinement process;

[0185] The copper strip is mechanically texturized and then ultrasonically cleaned. The 700°C molten aluminum, which has undergone the grain refinement process, is continuously cast onto the 200°C copper strip through a casting system to obtain a composite strip blank. The continuous casting speed is 200 mm / min, the width of the composite strip blank is 200 mm, and the thickness of the composite strip blank is 10 mm.

[0186] The composite strip blank is subjected to cold rolling to obtain a composite strip, wherein the rolling pressure is 5000 N, the rolling speed is 2000 mm / min, the rolling temperature is 100° C., and the rolling tension is 10000 N;

[0187] The excess aluminum and poorly composited edges on both sides of the composite plate strip are cut off.

[0188] Test section

[0189] (1) Bending performance test

[0190] Referring to GBT 232-2010, different bending radii were used to test the 90-degree bending performance of samples taken in the 90-degree direction, and the limit bending radius was obtained. The test results are shown in Table 1.

[0191] (2) Peel force test

[0192] Referring to the method of GJB 446, the peeling force test was performed on the composite strips of Examples 1-10 and Comparative Examples 1-3. The test results are shown in Table 1.

[0193] Table 1 Test results of Examples 1-12 and Comparative Examples 1-3

[0194]

[0195]

[0196] According to Table 1, by comparing the test results of Examples 1-12 and Comparative Examples 1-3, it can be seen that the preparation method of the metal solid-liquid composite provided by the present invention, through the smelting process, the refining process, the grain refinement process, the continuous casting process and the rolling process, can make the coating formed on the base plate have smaller grains to enhance its bonding strength with the surface of the base plate, while also enabling it to have good bending performance.

[0197] Among them, according to Table 1, by comparing the test results of Examples 1-6, it can be seen that when the refiner is within an appropriate range, it can help to further improve the bonding strength and bending performance of the composite plate strip.

[0198] Comparing the test results of Examples 7-9, it can be seen that the continuous casting speed is within an appropriate range, which can help to further improve the bonding strength and bending performance of the composite plate and strip.

[0199] Comparing the test results of Examples 10-12, it can be seen that a reasonable combination of two or more of Al-Ce-B, Al-YB and aluminum titanium boron wire can help to further reduce the size of the grains in the coating, thereby further improving the bending performance and bonding strength of the composite plate and strip.

[0200] By comparing Example 1 with Comparative Examples 1-3, it can be seen that no grain refiner is used in Comparative Example 1, and the ratio of the added amount A of the grain refiner to the mass B of the first metal in Comparative Examples 2-3 does not satisfy 0.1%≤A / B≤3%; when the amount of aluminum titanium boron wire added is too small, it will not have the effect of refining the grain size; and when the amount added is too much, sintering and agglomeration of TiB2 will occur, which will lead to a reduction in nucleation particles, resulting in the loss of the grain refining function of the aluminum titanium boron wire.

[0201] Finally, it should be noted that the above experimental examples are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above experimental examples, those skilled in the art should understand that they can still modify the technical solutions described in the above experimental examples, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the experimental examples of the present invention.

Claims

1. A method for preparing a metal solid-liquid composite strip, characterized by: include: a smelting step of smelting the ingot containing the first metal at 700° C. to 750° C. to obtain a molten pool; a refining step of adding a refining agent and an inert gas into the molten pool for refining treatment, and allowing the molten pool to stand after the refining treatment to obtain the metal solution containing the first metal; a grain refining step of adding a grain refiner to the metal solution containing the first metal to perform grain refining treatment to obtain a metal solution after the grain refining step; the grain refiner comprises two or more of Al-Ce-B, Al-YB, and aluminum titanium boron wire; and the amount A of the grain refiner added and the mass B of the first metal in the molten pool satisfy the following ratio: A / B = 3%; a continuous casting process, wherein the molten metal after the grain refining process is brought into contact with a base plate and strip and continuously casted to form a coating on the surface of the base plate and strip to obtain a composite plate and strip blank, wherein the width of the composite plate and strip blank is 10 mm to 2000 mm and the thickness of the composite plate and strip blank is 2 mm to 100 mm; the continuous casting process includes: a texturing step, wherein the plate and strip containing the second metal is texturized to obtain a textured plate and strip; a cleaning step, wherein the textured plate and strip is cleaned to obtain a cleaned plate and strip; a continuous casting step, wherein the cleaned plate and strip are brought into contact with the molten metal after the grain refining process at 25° C. to 500° C. and continuously casted to obtain a composite plate and strip blank; The composite plate strip blank is subjected to rolling treatment to obtain the composite plate strip, wherein the rolling pressure is 5000N to 5000000N, the rolling temperature is 0°C to 500°C, and the rolling tension is 0N to 2000000N.

2. The preparation method according to claim 1, wherein: The first metal includes aluminum; and / or the base plate strip includes at least one of aluminum, copper, titanium, iron and alloys thereof.

3. The preparation method according to claim 1, wherein: The molten pool after the refining treatment is allowed to stand at 700° C. to 750° C. for 15 min to 45 min.

4. The preparation method according to claim 1, wherein: The continuous casting speed is 200 mm / min to 3000 mm / min.

5. The preparation method according to claim 1, wherein: The peeling force of the composite strip at room temperature is 80N / mm to 200N / mm.

6. The preparation method according to any one of claims 1 to 5, characterized in that: The preparation method further comprises: The edge trimming process is to perform edge trimming on the edge of the composite plate strip.

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