Composite plate strip for water cooling plate

Abstract

The invention discloses a composite plate strip for a water cooling plate, which relates to the technical field of aluminum alloy and comprises the following components in parts by weight: 100-120 parts of aluminum, 5-8 parts of manganese, 2-3 parts of silicon, 8-12 parts of rhenium, 5-10 parts of niobium, 12-16 parts of chromium, 2-5 parts of lanthanum, 2.50-3.50 parts of copper, 0.50-1.50 parts of zinc, 0.60-1.50 parts of strontium and 1.20-1.50 parts of titanium. According to the composite plate strip for the water cooling plate, the components of the aluminum alloy are reasonably adjusted, niobium and aluminum are combined, the aluminum alloy has extremely high chemical stability, lanthanum and strontium are added, in the melting process, lanthanum and strontium are fully combined with the aluminum alloy, lanthanum and strontium are matched, and therefore the heat resistance of the aluminum alloy is improved. And a protective oxidation film is formed on the surface of the aluminum alloy, so that oxidation and corrosion of the aluminum alloy can be effectively prevented, and the corrosion resistance of the aluminum alloy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloys, and in particular to a composite plate strip for a water-cooling plate. Background Art

[0002] A water-cooled plate is a component that exchanges heat through the flow of coolant. The principle is to form one or more flow channels in a metal plate. The coolant flows in from the inlet of the plate and out from the outlet, thereby taking away the heat of the components.

[0003] With the progress of society, the application of water cooling plates is becoming more and more common. In order to reduce the weight and extend the service life of the battery cover, people have developed a variety of aluminum alloy materials.

[0004] The existing patent application publication number is CN118389880A, and the patent name is a method for preparing an aluminum alloy water-cooled plate and an invention patent for an aluminum alloy water-cooled plate. The invention patent records the following steps: step S1, adding remelted aluminum ingots and metal alloys into a smelting furnace and mixing and smelting according to the components and mass percentages of the 3003mod alloy plate, and controlling the temperature in the smelting furnace to be 730°C-750°C to obtain molten aluminum; step S2, injecting the molten aluminum into the casting nozzle of the casting and rolling mill through the flow channel, and cooling the molten aluminum through the rolling rollers of the casting and rolling mill to obtain a cast-rolled coil with a thickness of 6.5±0.3mm; step S3, homogenizing annealing the cast-rolled coil; step S4, cooling the cast-rolled coil and rolling it to the finished product thickness to obtain a cold-rolled coil; step S5, cleaning the cold-rolled coil; step S6, annealing the cleaned cold-rolled coil to obtain an aluminum alloy water-cooled plate. The preparation method of the aluminum alloy water-cooling plate of the present invention has short process flow, low energy consumption, small recrystallized grains of the plate, high strength and large elongation.

[0005] The corrosion resistance of the alloy produced above is low, and it is only suitable for general liquids. When in use, the water-cooled plate conducts heat, its temperature is variable, and it is in contact with water and other liquids for a long time. For low-corrosive liquids, it is easy to be damaged after long-term use, which does not meet people's use requirements. For this reason, we propose a composite plate strip for water-cooled plates. Summary of the invention

[0006] The main purpose of the present invention is to provide a composite plate strip for a water-cooling plate, which can effectively solve the problems in the background technology.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A composite plate strip for a water-cooled plate comprises the following components in parts by weight: 100-120 parts of aluminum, 5-8 parts of manganese, 2-3 parts of silicon, 8-12 parts of rhenium, 5-10 parts of niobium, 12-16 parts of chromium, 2-5 parts of lanthanum, 2.50-3.50 parts of copper, 0.50-1.50 parts of zinc, 0.60-1.50 parts of strontium and 1.20-1.50 parts of titanium.

[0009] A composite plate strip for a water-cooled plate comprises the following components in parts by weight: 110 parts of aluminum, 6 parts of manganese, 2 parts of silicon, 10 parts of rhenium, 7 parts of niobium, 14 parts of chromium, 4 parts of lanthanum, 3 parts of copper, 1.0 part of zinc, 1.20 parts of strontium and 1.35 parts of titanium.

[0010] Preferably, the production process of the composite strip for water-cooling plate comprises the following steps:

[0011] S1. Raw material processing: weigh the raw materials according to the raw material ratio and mix the raw materials evenly;

[0012] S2, raw material smelting: adding the uniformly mixed raw materials into the smelting furnace for smelting;

[0013] S3, casting and rolling forming; casting and rolling the smelted raw materials to obtain aluminum alloy strips;

[0014] S4, continuous rolling: rolling the aluminum alloy strip into aluminum alloy strip;

[0015] S5. Strengthening treatment: heat-treating the aluminum alloy strip and correcting the size of the aluminum alloy strip.

[0016] Preferably, in step S1, the weighed powdered raw materials are mixed using a vacuum mixer under a nitrogen gas environment.

[0017] Preferably, the steps of smelting raw materials in step S2 are as follows:

[0018] S21, charging and heating: adding uniformly mixed raw materials into the smelting furnace, and then heating at a constant temperature;

[0019] S22, smelting alloy: smelting the raw materials in the smelting furnace:

[0020] S23, slag removal: remove slag from the melt, keep warm for 0.4-0.6h and then proceed with vacuum casting.

[0021] Preferably, when the alloy is smelted in step S22, when the temperature in the smelting furnace rises to 460-480° C., argon gas is filled into the smelting furnace;

[0022] When the temperature in the smelting furnace rises to 690-710°C, the heating rate is reduced to 15°C / h, the melt in the smelting furnace is stirred, and a refining agent is added for refining;

[0023] When the temperature in the smelting furnace rises to 730-750℃, keep it warm for half an hour and add slag remover for smelting.

[0024] Preferably, in step S23, a slag remover is added for smelting and then the temperature is raised to 760-780°C, a refining agent is added again for insulation for 0.5-0.8h, argon gas is introduced for slag removal, and finally the temperature is raised to 800-820°C and allowed to stand for 0.5-0.8h;

[0025] The refining agent is composed of sodium chloride and sodium fluoride, and the weight ratio of the sodium chloride to the sodium fluoride is 9:11.

[0026] Preferably, during the casting and rolling in step S3, an ultrasonic device and a magnetic induction coil are installed on the front side of the casting roller to form an ultrasonic region space and an electrostatic field, the ultrasonic power is 200W, the electrostatic field strength is 40-45mT, the width at the casting and rolling is 20mm, the rear end is 6mm, the cold water temperature during casting and rolling is 10°C, and the water flow rate is 100L / min.

[0027] Preferably, the continuous rolling in step S4 includes the following steps:

[0028] S41, homogenization annealing: placing the cast aluminum alloy strip in an electric furnace, heating it to 600-620°C and keeping it at that temperature for 40-48 hours for homogenization annealing;

[0029] S42, initial cold rolling: cold rolling the aluminum alloy strip after homogenization annealing for 4-5 times to form an aluminum alloy strip with a thickness of 1.6-2.0 mm:

[0030] S43, intermediate annealing: placing the aluminum alloy strip obtained by the initial cold rolling in an electric furnace and heating it to 450-480°C for 2-3 hours for intermediate annealing;

[0031] S44, secondary cold rolling: cold rolling the intermediate annealed aluminum alloy strip for 4-5 times to obtain an aluminum alloy strip of 0.4-0.6 mm.

[0032] Preferably, during the strengthening treatment in step S5, a heating device is used to heat the aluminum alloy at a constant temperature, the heating rate is 10°C / min, the temperature is raised to 500°C, solution treatment is performed for 2-3h, 25°C water quenching is performed and then placed for 2h, and then aging treatment is performed, the aging treatment temperature is 150°C, the aging treatment time is 8-10h, and then secondary aging treatment is performed, the secondary aging treatment temperature is 180°C, the secondary aging treatment time is 18-22h, and air cooling is performed to room temperature after the secondary aging treatment.

[0033] Compared with the prior art, the composite plate strip for a water-cooling plate of the present invention has the following beneficial effects:

[0034] First, the present invention records a composite plate strip for a water-cooled plate, which reasonably adjusts the composition of the aluminum alloy so that niobium is combined with aluminum, so that the aluminum alloy has extremely high chemical stability, and adds lanthanum and strontium elements. During the melting process, lanthanum and strontium are fully combined with the aluminum alloy. Lanthanum and strontium cooperate to form a protective oxide film on the surface of the aluminum alloy, which can effectively prevent oxidation and corrosion of the aluminum alloy, thereby improving the corrosion resistance of the aluminum alloy.

[0035] Secondly, the present invention records a composite plate strip for a water-cooled plate, which has added lanthanum and strontium elements. The addition of lanthanum can promote the grain refinement of the aluminum alloy, thereby improving its processing performance and reducing its deformation and fracture problems. The formation of strontium compounds will lead to the strengthening of the grain boundaries of the aluminum alloy and will also enhance the grain boundary equilibrium process of the aluminum alloy, which can improve the strength and hardness of the material while also reducing the toughness of the material, and has good prospects for use.

[0036] Third, the present invention records a composite plate strip for water-cooled plates, which uses electromagnetic technology and ultrasonic technology to assist casting and rolling during the casting and rolling process. The ultrasonic regional space and the electrostatic field cooperate with each other. During the propagation of ultrasonic waves in the molten body, an acoustic streaming effect and ultrasonic cavitation occur. The electromagnetic field can also produce non-contact stirring, so that coarse dendrites are sheared and dendrite segregation is further improved. The mutual cooperation further strengthens the stirring effect, so that the dendrite structure is broken, part of the dendrites are peeled off to become new crystal nuclei, and re-dissolved into the melt to increase the nucleation rate, so that the formation of columnar crystals is inhibited, the melt is evenly stirred, and the grains are finer and more uniform, so that the produced aluminum alloy has higher strength, hardness and toughness, and the use effect of the aluminum alloy is good, and it has a good use prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The present invention is a flow chart of a production process of a composite plate strip for a water-cooling plate. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] Example 1

[0040] A composite plate strip for a water-cooled plate comprises the following components in parts by weight: 100 parts of aluminum, 6 parts of manganese, 2 parts of silicon, 9 parts of rhenium, 6 parts of niobium, 12 parts of chromium, 3 parts of lanthanum, 2.50 parts of copper, 0.60 parts of zinc, 0.60 parts of strontium and 1.30 parts of titanium.

[0041] The production process of composite strip for water cooling plate includes the following steps:

[0042] S1. Raw material processing: weigh the raw materials according to the raw material ratio and mix the raw materials evenly;

[0043] The weighed powdered raw materials are mixed using a vacuum mixer under a nitrogen gas environment;

[0044] S2, raw material smelting: adding the uniformly mixed raw materials into the smelting furnace for smelting;

[0045] The steps of raw material smelting are as follows;

[0046] S21, charging and heating: adding uniformly mixed raw materials into the smelting furnace, and then heating at a constant temperature;

[0047] S22, smelting alloy: smelting the raw materials in the smelting furnace:

[0048] When melting the alloy, when the temperature in the melting furnace rises to 470°C, argon gas is filled into the melting furnace;

[0049] When the temperature in the smelting furnace rises to 700°C, the heating rate is reduced to 15°C / h, the melt in the smelting furnace is stirred, and a refining agent is added for refining;

[0050] When the temperature in the smelting furnace rises to 730°C, keep it warm for half an hour, and add slag remover for smelting;

[0051] S23, slag removal: remove slag from the melt, keep warm for 0.5h and then perform vacuum casting;

[0052] After adding slag remover for smelting, the temperature was raised to 770°C, and refining agent was added again for 0.6h. Argon was introduced for slag removal, and finally the temperature was raised to 800°C and allowed to stand for 0.6h.

[0053] The refining agent is composed of sodium chloride and sodium fluoride, and the weight ratio of sodium chloride to sodium fluoride is 9:11;

[0054] S3, casting and rolling forming; casting and rolling the smelted raw materials to obtain aluminum alloy strips;

[0055] During the casting and rolling process, an ultrasonic device and a magnetic induction coil are installed on the front side of the casting roll to form an ultrasonic region space and an electrostatic field. The ultrasonic power is 200W, the electrostatic field strength is 45mT, the width of the casting and rolling is 20mm, and the rear end is 6mm. The cold water temperature during the casting and rolling process is 10℃, and the water flow rate is 100L / min.

[0056] S4, continuous rolling: rolling the aluminum alloy strip into aluminum alloy strip;

[0057] Continuous rolling includes the following steps:

[0058] S41, homogenization annealing: placing the cast aluminum alloy strip in an electric furnace, heating it to 600° C. and keeping it at that temperature for 40 hours for homogenization annealing;

[0059] S42, initial cold rolling: cold rolling the aluminum alloy strip after homogenization annealing for 5 times to form an aluminum alloy strip with a thickness of 1.6 mm:

[0060] S43, intermediate annealing: placing the aluminum alloy strip obtained by the primary cold rolling in an electric furnace and heating it to 460° C. for 2 hours for intermediate annealing;

[0061] S44, secondary cold rolling: the intermediate annealed aluminum alloy strip is cold rolled for 4 times to obtain a 0.4 mm aluminum alloy strip.

[0062] S5. Strengthening treatment: heat-treating the aluminum alloy strip and correcting the size of the aluminum alloy strip.

[0063] During the strengthening treatment, the aluminum alloy is heated at a constant temperature of 10°C / min to 500°C by a heating equipment, and the solution treatment is performed for 2.5 hours. After quenching in 25°C water, it is placed for 2 hours, and then aging treatment is performed. The aging treatment temperature is 150°C and the aging treatment time is 8 hours. Then, a secondary aging treatment is performed at a temperature of 180°C and the secondary aging treatment time is 20 hours. After the secondary aging treatment, it is air-cooled to room temperature.

[0064] Example 2

[0065] A composite plate strip for a water-cooled plate comprises the following components in parts by weight: 110 parts of aluminum, 6 parts of manganese, 2 parts of silicon, 10 parts of rhenium, 7 parts of niobium, 15 parts of chromium, 4 parts of lanthanum, 3 parts of copper, 1.0 part of zinc, 1.20 parts of strontium and 1.35 parts of titanium.

[0066] The production process of composite strip for water cooling plate includes the following steps:

[0067] S1. Raw material processing: weigh the raw materials according to the raw material ratio and mix the raw materials evenly;

[0068] The weighed powdered raw materials are mixed using a vacuum mixer under a nitrogen gas environment;

[0069] S2, raw material smelting: adding the uniformly mixed raw materials into the smelting furnace for smelting;

[0070] The steps of raw material smelting are as follows;

[0071] S21, charging and heating: adding uniformly mixed raw materials into the smelting furnace, and then heating at a constant temperature;

[0072] S22, smelting alloy: smelting the raw materials in the smelting furnace:

[0073] When melting the alloy, when the temperature in the melting furnace rises to 470°C, argon gas is filled into the melting furnace;

[0074] When the temperature in the smelting furnace rises to 700°C, the heating rate is reduced to 15°C / h, the melt in the smelting furnace is stirred, and a refining agent is added for refining;

[0075] When the temperature in the smelting furnace rises to 750°C, keep it warm for half an hour, and add slag remover for smelting;

[0076] S23, slag removal: remove slag from the melt, keep warm for 0.5h and then perform vacuum casting;

[0077] After adding slag remover for smelting, the temperature was raised to 780℃, and refining agent was added again to keep the temperature for 0.6h, argon gas was introduced to remove slag, and finally the temperature was raised to 820℃ and left to stand for 0.6h;

[0078] The refining agent is composed of sodium chloride and sodium fluoride, and the weight ratio of sodium chloride to sodium fluoride is 9:11;

[0079] S3, casting and rolling forming; casting and rolling the smelted raw materials to obtain aluminum alloy strips;

[0080] During the casting and rolling process, an ultrasonic device and a magnetic induction coil are installed on the front side of the casting roll to form an ultrasonic region space and an electrostatic field. The ultrasonic power is 200W, the electrostatic field strength is 45mT, the width of the casting and rolling is 20mm, and the rear end is 6mm. The cold water temperature during the casting and rolling process is 10℃, and the water flow rate is 100L / min.

[0081] S4, continuous rolling: rolling the aluminum alloy strip into aluminum alloy strip;

[0082] Continuous rolling includes the following steps:

[0083] S41, homogenization annealing: placing the cast aluminum alloy strip in an electric furnace, heating it to 610° C. and keeping it at that temperature for 44 hours for homogenization annealing;

[0084] S42, initial cold rolling: cold rolling the aluminum alloy strip after homogenization annealing for 5 times to form an aluminum alloy strip with a thickness of 1.6 mm:

[0085] S43, intermediate annealing: placing the aluminum alloy strip obtained by the primary cold rolling in an electric furnace and heating it to 460° C. for 2.5 hours for intermediate annealing;

[0086] S44, secondary cold rolling: the intermediate annealed aluminum alloy strip is cold rolled for 5 times to obtain a 0.4 mm aluminum alloy strip.

[0087] S5. Strengthening treatment: heat-treating the aluminum alloy strip and correcting the size of the aluminum alloy strip.

[0088] During the strengthening treatment, the aluminum alloy is heated at a constant temperature of 10°C / min to 500°C by a heating equipment, and the solution treatment is performed for 3 hours. After quenching in water at 25°C and placing for 2 hours, an aging treatment is performed at a temperature of 150°C and a duration of 10 hours. A secondary aging treatment is then performed at a temperature of 180°C and a duration of 20 hours. After the secondary aging treatment, the alloy is air-cooled to room temperature.

[0089] Example 3

[0090] A composite plate strip for a water-cooled plate comprises the following components in parts by weight: 120 parts of aluminum, 7 parts of manganese, 3 parts of silicon, 11 parts of rhenium, 8 parts of niobium, 15 parts of chromium, 5 parts of lanthanum, 3 parts of copper, 1.20 parts of zinc, 1.50 parts of strontium and 1.40 parts of titanium.

[0091] The production process of composite strip for water cooling plate includes the following steps:

[0092] S1. Raw material processing: weigh the raw materials according to the raw material ratio and mix the raw materials evenly;

[0093] The weighed powdered raw materials are mixed using a vacuum mixer under a nitrogen gas environment;

[0094] S2, raw material smelting: adding the uniformly mixed raw materials into the smelting furnace for smelting;

[0095] The steps of raw material smelting are as follows;

[0096] S21, charging and heating: adding uniformly mixed raw materials into the smelting furnace, and then heating at a constant temperature;

[0097] S22, smelting alloy: smelting the raw materials in the smelting furnace:

[0098] When melting the alloy, when the temperature in the melting furnace rises to 470°C, argon gas is filled into the melting furnace;

[0099] When the temperature in the smelting furnace rises to 700°C, the heating rate is reduced to 15°C / h, the melt in the smelting furnace is stirred, and a refining agent is added for refining;

[0100] When the temperature in the smelting furnace rises to 750°C, keep it warm for half an hour, and add slag remover for smelting;

[0101] S23, slag removal: remove slag from the melt, and keep warm for 0.6h before vacuum casting;

[0102] After adding slag remover for smelting, the temperature was raised to 780°C, and refining agent was added again to keep the temperature for 0.7h, argon gas was introduced to remove slag, and finally the temperature was raised to 820°C and left to stand for 0.7h;

[0103] The refining agent is composed of sodium chloride and sodium fluoride, and the weight ratio of sodium chloride to sodium fluoride is 9:11;

[0104] S3, casting and rolling forming; casting and rolling the smelted raw materials to obtain aluminum alloy strips;

[0105] During the casting and rolling process, an ultrasonic device and a magnetic induction coil are installed on the front side of the casting roll to form an ultrasonic region space and an electrostatic field. The ultrasonic power is 200W, the electrostatic field strength is 45mT, the width of the casting and rolling is 20mm, and the rear end is 6mm. The cold water temperature during the casting and rolling process is 10℃, and the water flow rate is 100L / min.

[0106] S4, continuous rolling: rolling the aluminum alloy strip into aluminum alloy strip;

[0107] Continuous rolling includes the following steps:

[0108] S41, homogenization annealing: placing the cast aluminum alloy strip in an electric furnace, heating it to 610° C. and keeping it at that temperature for 48 hours for homogenization annealing;

[0109] S42, initial cold rolling: cold rolling the aluminum alloy strip after homogenization annealing for 5 times to form an aluminum alloy strip with a thickness of 1.6 mm:

[0110] S43, intermediate annealing: placing the aluminum alloy strip obtained by the primary cold rolling in an electric furnace and heating it to 470° C. for 3 hours for intermediate annealing;

[0111] S44, secondary cold rolling: the intermediate annealed aluminum alloy strip is cold rolled for 5 times to obtain a 0.4 mm aluminum alloy strip.

[0112] S5. Strengthening treatment: heat-treating the aluminum alloy strip and correcting the size of the aluminum alloy strip.

[0113] During the strengthening treatment, the aluminum alloy is heated at a constant temperature of 10°C / min to 500°C by a heating equipment, and the solution treatment is performed for 3 hours. After quenching in water at 25°C and placing for 2 hours, an aging treatment is performed at a temperature of 150°C and a duration of 10 hours. A secondary aging treatment is then performed at a temperature of 180°C and a duration of 22 hours. After the secondary aging treatment, the alloy is air-cooled to room temperature.

[0114] The aluminum alloy strip produced by the solution recorded as patent number CN113088764A was used as a comparative example, and the performance of the products of Examples 1-3 and the comparative example products was measured (the thickness was produced according to the test standard). The tensile strength was tested according to the test method described in the standard GBT16865-2013, the elongation of the aluminum alloy was tested according to the test method described in the standard GB / T2281-2010, the corrosion resistance of the aluminum alloy was tested according to the GB / T24231-2008 standard, and the thermal conductivity of the aluminum alloy was tested according to the GB / T80052-2011 standard. The test results are shown in the following table;

[0115] Example 1 Example 2 Example 3 Example 1 Example 2 Tensile strength(MPa) 321 342 318 186 188 Elongation(%) 21.5 20.9 22.2 39 38 Salt spray test(h) ＞120 ＞120 ＞120 74 75 Thermal conductivity (W / (MK)) 218 234 225 158 163

[0116] It can be seen from the data in the above table that the performance of the aluminum alloy described in the present invention is greatly improved, while the performance improvement of the aluminum alloy produced by Example 3 is small compared with that of Example 2. Considering the cost, the best solution is Example 2.

[0117] The present invention records a composite plate strip for a water-cooled plate, which reasonably adjusts the composition of the aluminum alloy so that niobium is combined with aluminum, so that the aluminum alloy has extremely high chemical stability, and adds lanthanum and strontium elements. During the melting process, lanthanum and strontium are fully combined with the aluminum alloy. Lanthanum and strontium cooperate to form a protective oxide film on the surface of the aluminum alloy, which can effectively prevent oxidation and corrosion of the aluminum alloy, thereby improving the corrosion resistance of the aluminum alloy.

[0118] The composite plate strip for a water-cooled plate of the present invention has lanthanum and strontium elements added thereto. The addition of lanthanum can promote the grain refinement of the aluminum alloy, thereby improving its processing performance and reducing its deformation and fracture problems. The formation of strontium compounds will lead to the strengthening of the grain boundaries of the aluminum alloy and will also enhance the grain boundary equilibrium process of the aluminum alloy, which can improve the strength and hardness of the material while also reducing the toughness of the material, and has good prospects for use.

[0119] The composite plate strip for water-cooled plates of the present invention adopts electromagnetic technology and ultrasonic technology to assist casting and rolling during the casting and rolling process. The ultrasonic region space and the electrostatic field cooperate with each other. During the propagation of ultrasonic waves in the molten body, an acoustic streaming effect and ultrasonic cavitation occur. The electromagnetic field can also produce non-contact stirring, so that coarse dendrites are sheared and dendrite segregation is further improved. The stirring effect is further strengthened by mutual cooperation, so that the dendrite structure is broken, part of the dendrites are peeled off to become new crystal nuclei, and they are re-dissolved into the melt, thereby increasing the nucleation rate, suppressing the formation of columnar crystals, and evenly stirring the molten body. The grains are finer and more uniform, so that the produced aluminum alloy has higher strength, hardness and toughness, and the use effect of the aluminum alloy is good, and it has a good use prospect.

[0120] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A composite plate strip for a water-cooling plate, characterized in that: The invention comprises the following components in parts by weight: 100-120 parts of aluminum, 5-8 parts of manganese, 2-3 parts of silicon, 8-12 parts of rhenium, 5-10 parts of niobium, 12-16 parts of chromium, 2-5 parts of lanthanum, 2.50-3.50 parts of copper, 0.50-1.50 parts of zinc, 0.60-1.50 parts of strontium and 1.20-1.50 parts of titanium.

2. The composite plate strip for a water-cooling plate according to claim 1, characterized in that: The invention comprises the following components in parts by weight: 110 parts of aluminum, 6 parts of manganese, 2 parts of silicon, 10 parts of rhenium, 7 parts of niobium, 14 parts of chromium, 4 parts of lanthanum, 3 parts of copper, 1.0 part of zinc, 1.20 parts of strontium and 1.35 parts of titanium.

3. A composite plate strip for a water-cooling plate according to any one of claims 1-2, characterized in that: The production process of the composite strip for water-cooling plate comprises the following steps: S1. Raw material processing: weigh the raw materials according to the raw material ratio and mix the raw materials evenly; S2, raw material smelting: adding the uniformly mixed raw materials into the smelting furnace for smelting; S3, casting and rolling forming; casting and rolling the smelted raw materials to obtain aluminum alloy strips; S4, continuous rolling: rolling the aluminum alloy strip into aluminum alloy strip; S5. Strengthening treatment: heat-treating the aluminum alloy strip and correcting the size of the aluminum alloy strip.

4. The composite plate strip for a water-cooling plate according to claim 3, characterized in that: In step S1, the weighed powdered raw materials are mixed using a vacuum mixer under a nitrogen gas environment.

5. The composite plate strip for a water-cooling plate according to claim 4, characterized in that: The steps of raw material smelting in step S2 are as follows: S21, charging and heating: adding uniformly mixed raw materials into the smelting furnace, and then heating at a constant temperature; S22, smelting alloy: smelting the raw materials in the smelting furnace: S23, slag removal: remove slag from the melt, keep warm for 0.4-0.6h and then proceed with vacuum casting.

6. The composite plate strip for a water-cooling plate according to claim 5, characterized in that: When the alloy is melted in step S22, when the temperature in the melting furnace rises to 460-480°C, argon gas is filled into the melting furnace; When the temperature in the smelting furnace rises to 690-710°C, the heating rate is reduced to 15°C / h, the melt in the smelting furnace is stirred, and a refining agent is added for refining; When the temperature in the smelting furnace rises to 730-750℃, keep it warm for half an hour and add slag remover for smelting.

7. The composite plate strip for a water-cooling plate according to claim 6, characterized in that: In step S23, a slag remover is added for smelting and then the temperature is raised to 760-780°C, a refining agent is added again for 0.5-0.8h, argon gas is introduced for slag removal, and finally the temperature is raised to 800-820°C and allowed to stand for 0.5-0.8h; The refining agent is composed of sodium chloride and sodium fluoride, and the weight ratio of the sodium chloride to the sodium fluoride is 9:

11.

8. The composite plate strip for a water-cooling plate according to claim 3, characterized in that: During the casting and rolling in step S3, an ultrasonic device and a magnetic induction coil are installed on the front side of the casting roller to form an ultrasonic region space and an electrostatic field. The width of the aluminum alloy strip at the casting and rolling position is 20 mm, and the rear end is 6 mm. The cold water temperature during casting and rolling is 10°C, and the water flow rate is 100 L / min.

9. The composite plate strip for a water-cooling plate according to claim 8, characterized in that: The continuous rolling in step S4 comprises the following steps: S41, homogenization annealing: placing the cast aluminum alloy strip in an electric furnace, heating it to 600-620°C and keeping it at that temperature for 40-48 hours for homogenization annealing; S42, initial cold rolling: cold rolling the aluminum alloy strip after homogenization annealing for 4-5 times to form an aluminum alloy strip with a thickness of 1.6-2.0 mm: S43, intermediate annealing: placing the aluminum alloy strip obtained by the initial cold rolling in an electric furnace and heating it to 450-480°C for 2-3 hours for intermediate annealing; S44, secondary cold rolling: cold rolling the intermediate annealed aluminum alloy strip for 4-5 times to obtain an aluminum alloy strip of 0.4-0.6 mm.

10. The composite plate strip for a water-cooling plate according to claim 3, characterized in that: During the strengthening treatment in step S5, the aluminum alloy is heated at a constant temperature by a heating device at a rate of 10°C / min to 500°C, solution treated for 2-3h, quenched in 25°C water and placed for 2h, then subjected to aging treatment at a temperature of 150°C for 8-10h, then subjected to secondary aging treatment at a temperature of 180°C for 18-22h, and air-cooled to room temperature after the secondary aging treatment.

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