Preparation method of a manifold, the manifold and a heat dissipation control system

Abstract

The present application discloses a preparation method of a collector-distributor, a collector-distributor and a heat dissipation control system, belonging to the technical field of metallurgical engineering. The method includes: configuring an aluminum alloy melt, pouring the molten aluminum alloy melt into a casting mold, and forming an aluminum alloy ingot after cooling; performing hot rolling on the aluminum alloy ingot through a semi-solid hot rolling process to obtain an aluminum alloy bar; extruding the aluminum alloy bar into a shape to obtain a collector-distributor profile; performing solution heat treatment and aging treatment on the collector-distributor profile; welding and assembling the collector-distributor profile after solution heat treatment and aging treatment to generate a finished collector-distributor. By adding anti-corrosion rare earth elements and through heat treatment, rolling and extrusion forming, the present application can produce a collector-distributor with excellent corrosion resistance and high mechanical properties in a coolant.

Description

Technical Field

[0001] The present application relates to the technical field of metallurgical engineering, and more specifically, to a preparation method of a water distribution and collection device, a water distribution and collection device, and a heat dissipation control system. Background Art

[0002] Currently, most of the water distribution and collection devices used in liquid-cooled servers are made of stainless steel, and the water distribution and collection device is divided into two independent water distribution pipes. The components are heavy and do not meet the requirements of rapid handling or disassembly.

[0003] At the same time, the coolant used in liquid-cooled servers contains a corresponding proportion of ethylene glycol solution. Ethylene glycol coolant has low corrosion resistance. If used for too long, after corresponding chemical reactions, substances such as glycolic acid and oxalic acid will be produced, which will cause a certain degree of corrosion to the water distribution device. Summary of the Invention

[0004] In order to overcome the above technical defects, the purpose of the present application is to provide a preparation method of a water distribution and collection device, a water distribution and collection device, and a heat dissipation control system. The method includes: configuring an aluminum alloy melt, and making the aluminum alloy melt include the following elements by mass percentage: copper: 0.8% - 1.0%, magnesium: 0.8% - 1.2%, silicon: 0.4% - 0.8%, zirconium: 0.1% - 0.2%, cerium: 0.061% - 0.08%, and the rest is aluminum; pouring the molten aluminum alloy melt into a mold, and forming an aluminum alloy ingot after cooling; performing hot rolling on the aluminum alloy ingot through a semi-solid hot rolling process to obtain an aluminum alloy cast bar; extruding the aluminum alloy cast bar into a shape to obtain a water distribution and collection device profile; performing solution heat treatment and aging treatment on the water distribution and collection device profile; welding and assembling the water distribution and collection device profile after solution heat treatment and aging treatment to generate a finished water distribution and collection device. The present application can produce an aluminum alloy water distribution and collection device with excellent corrosion resistance and high mechanical properties in the coolant by adding anti-corrosion rare earth elements and through heat treatment, rolling, and extrusion forming.

[0005] In the first aspect, the present application provides a preparation method of a water distribution and collection device, and the method includes:

[0006] Configuring an aluminum alloy melt, and making the aluminum alloy melt include the following elements by mass percentage: copper: 0.8% - 1.0%, magnesium: 0.8% - 1.2%, silicon: 0.4% - 0.8%, zirconium: 0.1% - 0.2%, cerium: 0.061% - 0.08%, and the rest is aluminum;

[0007] Pouring the molten aluminum alloy melt into a mold, and forming an aluminum alloy ingot after cooling;

[0008] Performing hot rolling on the aluminum alloy ingot through a semi-solid hot rolling process to obtain an aluminum alloy cast bar;

[0009] Extrude the aluminum alloy casting rod to obtain the profile of the manifold;

[0010] Conduct solution heat treatment and aging treatment on the manifold profile;

[0011] Weld and assemble the manifold profile after solution heat treatment and aging treatment to produce the finished manifold.

[0012] Optionally, configure the aluminum alloy melt, including:

[0013] Add pure metal aluminum ingots into the melting furnace, heat the melting furnace to 700°C - 710°C, then add pure metal magnesium ingots and silicon ingots into the pure metal aluminum melt. After the pure metal magnesium ingots and silicon ingots are melted, stir evenly, and heat the melting furnace to 730°C - 740°C. Then add zirconium trialuminate and rare earth element cerium ingots into the melt to refine the aluminum alloy melt.

[0014] Optionally, hot roll the aluminum alloy ingot through the semi-solid hot rolling process, including:

[0015] Add the aluminum alloy ingot into the industrial furnace, heat the temperature of the industrial furnace to 520°C - 550°C, conduct heat treatment on the aluminum alloy ingot, and cool the industrial furnace to 500°C;

[0016] Add the cooled aluminum alloy ingot into the rolling mill for hot rolling;

[0017] Among them, the number of rolling passes is 6 - 8 passes, and the elongation coefficient of each rolling pass is between 1.05 and 1.3; the roll temperature is 460°C - 480°C.

[0018] Optionally, the heat treatment time of the aluminum alloy ingot is 2h - 3h;

[0019] The reduction ratio of the first rolling pass of hot rolling is 30% - 50%, and the reduction ratio of the subsequent rolling passes gradually decreases to 10% - 20%.

[0020] Optionally, extrude the aluminum alloy casting rod to obtain the profile of the manifold, including:

[0021] Conduct stress relief annealing treatment on the hot-rolled aluminum alloy casting rod;

[0022] Put the stress relief annealed aluminum alloy casting rod into the forward extruder, and extrude the aluminum alloy casting rod through the extrusion die to obtain the profile of the manifold;

[0023] Among them, the temperature of the aluminum alloy casting rod, the temperature of the extrusion cylinder of the extruder, and the temperature of the extrusion die are all 400°C - 420°C, and the temperature at the outlet of the extruder is 480°C - 520°C.

[0024] Optionally, the stress relief annealing treatment temperature for the hot-rolled aluminum alloy casting rod is 400°C to 420°C, and the time is 1h to 2h;

[0025] The extrusion ratio for extruding the aluminum alloy casting rod is 10 to 15, and the extrusion speed is 6mm / s to 8mm / s.

[0026] Optionally, solution heat treatment and artificial aging treatment are performed on the manifold profile, including:

[0027] Solution heat treatment and water quenching are performed on the manifold profile. Among them, the solution heat treatment temperature is 540°C to 550°C, and the time is 1h to 1.5h;

[0028] Artificial aging treatment is performed on the manifold profile. Among them, the artificial aging temperature is 150°C to 160°C, and the time is 12h to 13h.

[0029] Optionally, before welding and assembling the manifold profile to produce the finished manifold, it includes:

[0030] Electropolishing and passivation treatment are performed on the manifold profile after solution heat treatment and artificial aging treatment;

[0031] Electropolishing and passivation treatment are performed on the manifold profile after solution heat treatment and artificial aging treatment, including:

[0032] Chrome or nickel coating is electroplated on the surface of the manifold profile, and the surface of the manifold profile is polished by mechanical or chemical methods;

[0033] An oxide film is formed on the surface of the manifold profile by anodic oxidation.

[0034] Optionally, welding and assembling are performed on the passivated manifold profile to produce the finished manifold, including:

[0035] Aluminum alloy plates with the same material and the same thickness as the manifold profile are used to weld the two ends of the manifold profile, and the ventilation holes in the middle of the manifold profile are reserved;

[0036] Holes are drilled in the branch water pipes and the main water pipe of the manifold profile to set up pipeline branches;

[0037] The hole interfaces of the main water pipe and the branch water pipes are threadedly connected to the quick-connect plugs with hoses to produce the finished manifold.

[0038] Optionally, the length of the manifold profile is 500mm to 700mm, the width is 100mm to 200mm, the height is 50mm to 60mm, and the wall thickness of the manifold profile is 5mm to 6mm;

[0039] The perpendicularity between the quick-connect joint of the manifold pipeline connection and the surface of the manifold is ≤ 0.1 mm.

[0040] In a second aspect, the present application provides a manifold, which is prepared according to the preparation method of the manifold in any one of the first aspects.

[0041] In a third aspect, the present application provides a heat dissipation control system, which includes a processor, a cold plate, a water pump, and a manifold generated according to the preparation method of the manifold in any one of the first aspects. The manifold includes a main water inlet, a plurality of sub-water outlets, a main water outlet, and a plurality of sub-water inlets;

[0042] The processor is connected to a plurality of sub-water inlets of the manifold, the main water outlet of the manifold is connected to the cold plate, the cold plate is connected to the water pump, the water pump is connected to the main water inlet of the manifold, and a plurality of sub-water outlets of the manifold are connected to the processor.

[0043] Compared with the prior art, the preparation method of the manifold and the manifold provided by the present application at least achieve the following beneficial effects:

[0044] The technical solution provided by the embodiments of the present application can produce an aluminum alloy manifold with excellent corrosion resistance and high mechanical properties in the coolant by adding anti-corrosion rare earth elements and through heat treatment, rolling, and extrusion molding. While ensuring the mechanical properties, the weight is reduced; the present application relates to a process combining the deformation and heat treatment of aluminum alloy materials, giving play to the advantages of aluminum alloy, such as light weight, small occupied space, and meeting the mechanical property requirements of the water outlet pipe and the return pipe; at the same time, through the pipeline integrated design, the position of the cold plate liquid cooling server can be flexibly adjusted, improving the operation efficiency.

[0045] Of course, it is not necessary for any product implementing the present application to achieve all the above technical effects simultaneously.

[0046] Through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings, other features and advantages of the present application will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present application and, together with the description, are used to explain the principles of the present application.

[0048] Figure 1 is a flowchart of the preparation method of the manifold provided by the present application;

[0049] Figure 2 is a structural diagram of the manifold;

[0050] Figure 3 is a cross-sectional view of the manifold profile;

[0051] Figure 4 is a schematic diagram of the heat dissipation control system;

[0052] Figure 5 is a data acquisition flow chart;

[0053] Figure 6 is a heat dissipation control method flow chart;

[0054] Reference numerals in the drawings:

[0055] 1. Main water outlet; 2. Sub-inlet; 3. Main inlet; 4. Sub-outlet; 5. Heat dissipation fins; 6. Manifold; 7. First pipeline; 8. Second pipeline; 9. Ventilation pipeline. Detailed implementation manners

[0056] Now, various exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present application.

[0057] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present application or its application or use.

[0058] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification.

[0059] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0060] It should be noted that: Like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0061] It can be understood that ethylene glycol has the advantages of low freezing point, low cost and large heat capacity, and mainly acts as a cooling medium for industrial equipment. The coolant used in the cold plate liquid cooling of servers contains an ethylene glycol solution in a corresponding proportion. Ethylene glycol coolant has relatively low corrosion performance. If it is used for too long, after corresponding chemical reactions, substances such as glycolic acid and oxalic acid will be produced. Therefore, it may cause a certain degree of corrosion to the equipment.

[0062] In a cold plate liquid-cooled server room, a rack-mounted liquid-cooled - air-cooled heat distribution controller (CDU device) is used to ensure that the heat of the coolant can be quickly cooled after passing through the CDU device. However, the CDU device is generally large in size, usually 2U or 4U in height. During the testing process before the server is developed and finalized, connecting one or two cold plate servers to the CDU device for test installation and debugging is a cumbersome process and not conducive to handling. Moreover, the manifolds used in the coolant circulation pipeline are mostly made of stainless steel. The manifold pipes are respectively used for the outlet pipe and the return pipe, so there are many and heavy components, failing to meet the requirements of quick handling or disassembly.

[0063] Here, the rack-mounted liquid-cooled - air-cooled heat distribution controller: This device provides the circulating power of the liquid-cooled coolant for the liquid-cooled server through a built-in water pump. The built-in silent fan cools down the temperature of the coolant in an air-cooled manner through a heat exchanger and then discharges the heat into the computer room; it uses a standard CDU controller to provide real-time monitoring of the temperature and pressure of the system, meeting the requirements of the liquid-cooled server for the temperature and pressure of the coolant.

[0064] The height of the server is usually calculated in units of "U". 1U is equal to 44.45 millimeters (1.75 inches); the height unit "U" of the server is used to standardize the height of the server and the cabinet so as to be able to be compatible and efficiently utilize the space; common server heights include 1U, 2U, 3U, and 4U, etc.

[0065] This application proposes a processing and preparation method for an aluminum alloy manifold, which involves the process of combining the deformation and heat treatment of aluminum alloy materials, giving play to the advantages of the aluminum alloy being light in weight, small in occupied space, and meeting the mechanical property requirements of the outlet pipe and the return pipe; through the integrated pipeline design, the position of the cold plate liquid-cooled server can be flexibly adjusted.

[0066] As Figure 1 shown, this application provides a preparation method for a manifold, and the method includes:

[0067] Step S1: Configure the aluminum alloy melt and make the aluminum alloy melt include the following elements by mass percentage: copper: 0.8% - 1.0%, magnesium: 0.8% - 1.2%, silicon: 0.4% - 0.8%, zirconium: 0.1% - 0.2%, cerium: 0.061% - 0.08%, and the rest is aluminum;

[0068] Step S2: Pour the molten aluminum alloy melt into a mold and form an aluminum alloy ingot after cooling;

[0069] Step S3: Perform hot rolling on the aluminum alloy ingot through a semi-solid hot rolling process to obtain an aluminum alloy rod;

[0070] Step S4: By extruding the hot-rolled aluminum alloy ingot, a manifold profile is obtained.

[0071] Step S5: Solution heat treatment and artificial aging treatment are performed on the manifold profile.

[0072] Step S6: Welding and assembly are performed on the manifold profile after solution heat treatment and artificial aging treatment to produce a finished manifold.

[0073] Specifically, the Al-Cu-Mg-Si series alloy of the present application mainly consists of the following components, and the chemical composition is by mass percentage: Cu: 0.8% - 1.0%, Mg: 0.8% - 1.2%, Si: 0.4% - 0.8%, Zr: 0.1% - 0.2%, Ce: 0.061% - 0.08%, and the rest is Al. Adding trace rare earth element Ce can refine the grains. Within the range of 0.061% - 0.08%, as the addition amount of rare earth element Ce increases, the sizes of α-Al grains and eutectic Si phases gradually decrease, resulting in fine grain strengthening and gradually increasing mechanical properties.

[0074] Optionally, pure aluminum ingots are added to a melting furnace, the melting furnace is heated to 700°C - 710°C, then pure magnesium ingots and silicon ingots are added to the pure aluminum melt. After the pure magnesium ingots and silicon ingots are melted and stirred evenly, the melting furnace is heated to 730°C - 740°C, and then zirconium aluminate Al3Zr and rare earth element cerium ingots are added to the melt to refine the aluminum alloy melt.

[0075] Specifically, semi-continuous DC casting is adopted: pure aluminum is added to a melting furnace, the melting furnace is heated to 700°C - 710°C, pure magnesium and silicon are added, and after waiting for the pure magnesium and silicon to melt and be stirred evenly, the melting furnace is heated to 730°C - 740°C, then Al3Zr master alloy and Ce rare earth element are added, and finally refining and casting are performed using the DC casting method to obtain an ingot.

[0076] Optionally, the molten aluminum alloy melt is poured into a mold, and after cooling, an aluminum alloy ingot is formed; continuous casting technology is adopted to improve production efficiency and reduce ingot defects; electromagnetic casting technology is used to improve the surface quality and internal structure of the ingot; the cooling water flow rate and temperature are optimized to reduce the internal stress and cracks of the ingot.

[0077] Optimize the cooling water flow: Control the cooling water flow in sections. Adopt a larger cooling water flow at the upper part of the aluminum alloy ingot (near the pouring gate) to quickly reduce the surface temperature and form a uniform solidification shell. Gradually reduce the cooling water flow at the lower part of the ingot to avoid stress concentration caused by excessive cooling. Dynamically adjust the flow rate, use a flow sensor to monitor the cooling water flow in real time, and dynamically adjust it according to the temperature change of the ingot. Introduce an automated control system to automatically adjust the cooling water flow according to the preset cooling curve; evenly distribute the cooling water;

[0078] Optimize the cooling water temperature: Control the cooling water temperature, which is usually controlled between 20°C and 40°C to avoid too high or too low temperature. Use a constant temperature cooling system to keep the cooling water temperature stable; Control the temperature in sections. Use cooling water with a lower temperature in the high-temperature area of the ingot (such as near the pouring gate) to quickly remove heat, and use cooling water with a higher temperature in the low-temperature area of the ingot (such as the bottom) to slow down the cooling rate and preheat the cooling water;

[0079] Optimizing the cooling water flow and temperature requires starting from multiple aspects such as sectional control, dynamic adjustment, uniform distribution, temperature control, cooling process, equipment system, process parameters, and operation and maintenance; By reasonably designing the cooling process, introducing an intelligent control system, and strengthening operation management, the internal stress and cracks of the ingot can be effectively reduced, and the product quality and production efficiency can be improved.

[0080] Optionally, add the aluminum alloy ingot to an industrial furnace, heat the industrial furnace temperature to 520°C - 550°C, perform heat treatment on the aluminum alloy ingot, and cool the industrial furnace to 500°C;

[0081] Add the cooled aluminum alloy ingot to a rolling mill for hot rolling;

[0082] Among them, the number of rolling passes is 6 - 8 passes, and the elongation coefficient for each rolling pass is between 1.05 and 1.3; the roll temperature is 460°C - 480°C.

[0083] Specifically, in this application, through the semi-solid hot rolling process, the heat treatment temperature is 520°C - 550°C, the heat treatment time is 2h - 3h, and the rolling parameters are: the number of rolling passes is 6 - 8 passes, the roll temperature is controlled at 460°C - 480°C, the elongation coefficient for each pass is 1.05 - 1.3, a large reduction is selected for the first rolling pass, and a lower reduction is selected for the subsequent passes (for example, the reduction for the first pass can reach 30% - 50%, and gradually decreases to 10% - 20% for the subsequent passes).

[0084] Optionally, the heat treatment time for the aluminum alloy ingot is 2h - 3h;

[0085] The reduction for the first rolling pass of hot rolling is 30% - 50%, and the reduction for the subsequent rolling passes gradually decreases to 10% - 20%.

[0086] Specifically, first, hot rolling is carried out. During hot rolling, the metal has high plasticity and low deformation resistance. Large reduction ratios are used in hot rolling, which improves production efficiency. Through hot processing, the coarse grains in the as-cast state are broken, the microcracks are healed, the casting defects are reduced, the as-cast structure is transformed into a deformed structure, and at the same time, the microscopic defects on the surface are repaired.

[0087] Optionally, stress relief annealing treatment is performed on the hot-rolled aluminum alloy cast rod.

[0088] The stress relief annealed aluminum alloy cast rod is placed in a forward extrusion press, and the aluminum alloy cast rod is extruded through an extrusion die to obtain a manifold profile.

[0089] Among them, the temperature of the aluminum alloy cast rod, the temperature of the extrusion cylinder of the extrusion press, and the temperature of the extrusion die are all 400°C to 420°C, and the temperature at the outlet of the extrusion press is 480°C to 520°C.

[0090] Optionally, the temperature for stress relief annealing treatment of the hot-rolled aluminum alloy cast rod is 400°C to 420°C, and the time is 1h to 2h.

[0091] The extrusion ratio for extruding the aluminum alloy cast rod is 10 to 15, and the extrusion speed is 6mm / s to 8mm / s.

[0092] Specifically, the hot-rolled aluminum alloy rolled bar is put into a forward extrusion press for the extrusion process. The cast rod after rolling is first subjected to stress relief annealing heat treatment, with a temperature of 400°C to 420°C and a time of 1h to 2h; the temperature of the cast rod, the extrusion cylinder, and the extrusion die is controlled at 400°C to 420°C, the extrusion ratio is 10 to 15, the extrusion speed is 6mm / s to 8mm / s, the temperature at the outlet of the extrusion press is controlled at 480°C to 520°C, and air cooling is carried out.

[0093] Optionally, solution heat treatment and water quenching are performed on the manifold profile. Among them, the solution heat treatment temperature is 540°C to 550°C, and the time is 1h to 1.5h.

[0094] Artificial aging treatment is performed on the manifold profile. Among them, the artificial aging temperature is 150°C to 160°C, and the time is 12h to 13h.

[0095] Specifically, after the aluminum alloy manifold is formed, solution heat treatment and water quenching are carried out, and then artificial aging is carried out. Here, the solution heat treatment process: the solution temperature is 540°C, the time is 1h, the artificial aging temperature is 150°C, and the time is 12h; after solution aging heat treatment, the surface treatment and welding process of the aluminum alloy manifold are carried out.

[0096] After extrusion molding, a solution aging heat treatment process is added here to further improve the mechanical properties of the aluminum alloy manifold profile.

[0097] Optionally, electroplate a chromium or nickel coating on the surface of the manifold profile and polish the surface of the manifold profile by mechanical or chemical methods;

[0098] Form an oxide film on the surface of the manifold profile by anodic oxidation.

[0099] Specifically, after the aluminum alloy ingot is extruded and formed, it needs to go through electrolytic polishing and passivation treatment; electrolytic oxidation: that is, anodic oxidation. After the anodic oxidation reaction, an oxide film is formed on the surface of the aluminum alloy profile. The oxide film has the functions of coloring the surface, enhancing the hardness of the aluminum alloy, and providing anti-corrosion protection.

[0100] Optionally, weld the two ends of the manifold profile with aluminum alloy plates of the same material and the same thickness as the manifold profile, and retain the ventilation holes in the middle of the manifold profile;

[0101] Drill holes in the water distribution pipes and water collection pipes of the manifold profile to set up pipeline branches;

[0102] Threadedly connect the hole interfaces of the water collection pipe and the water distribution pipe with quick-connect plugs with hoses to produce a finished manifold.

[0103] Optionally, the length of the manifold profile is 500 mm to 700 mm, the width is 100 mm to 200 mm, the height is 50 mm to 60 mm, and the wall thickness of the manifold profile is 5 mm to 6 mm;

[0104] The perpendicularity of the quick-connect plug connected to the manifold pipeline to the surface of the manifold is ≤0.1 mm, making the connection of the interfaces of the main pipeline and the branch pipelines of the manifold more stable.

[0105] Specifically, as Figure 2 、 3 shown, after the manifold profile is treated by electrolytic oxidation, weld the two ends of the manifold with aluminum alloy plates of the same material and the same thickness as the manifold profile respectively, retain the ventilation holes in the middle of the manifold profile. After welding, drill holes in the first pipeline and the second pipeline of the manifold in sequence. The number of branch ports on each side of the pipeline is 2 to 3, and the interfaces of the branches are welded and encapsulated with quick-connect female heads; Connection method of the water separator: The main pipeline is threadedly connected with the quick-connect joint with a hose; The branch pipeline is threadedly connected with the quick-disconnect plug; The hose is connected with the quick-disconnect plug by a quick clamp; After the finished manifold is completed, set red and blue marks at the interfaces to distinguish the water outlet (blue mark) and the water inlet (red mark).

[0106] On the other hand, as Figure 2As shown, the present application provides a manifold, and the manifold is prepared according to the following method for preparing the manifold. The method for preparing the manifold includes:

[0107] Prepare an aluminum alloy melt, and make the aluminum alloy melt include elements with the following mass percentages: copper: 0.8% - 1.0%, magnesium: 0.8% - 1.2%, silicon: 0.4% - 0.8%, zirconium: 0.1% - 0.2%, cerium: 0.061% - 0.08%, and the rest is aluminum;

[0108] Pour the molten aluminum alloy melt into a mold, and form an aluminum alloy ingot after cooling;

[0109] Hot-roll the aluminum alloy ingot through a semi-solid hot-rolling process to obtain an aluminum alloy rod;

[0110] Extrude the aluminum alloy rod into shape to obtain a manifold profile;

[0111] Perform solution heat treatment and aging treatment on the manifold profile;

[0112] Weld and assemble the manifold profile after solution heat treatment and aging treatment to produce a finished manifold.

[0113] Optionally, the manifold 6 includes a first pipeline 7 and a second pipeline 8, and a ventilation pipeline 9 is arranged between the first pipeline 7 and the second pipeline 8;

[0114] A number of heat dissipation fins 5 are arranged on the side of the manifold 6, and the height of the heat dissipation fins 5 is 15 mm - 16 mm;

[0115] The length of the manifold 6 is 500 mm - 700 mm, the width is 100 mm - 200 mm, the height is 50 mm - 60 mm, and the wall thickness of the manifold 6 is 5 mm - 6 mm.

[0116] Optionally, a number of branch pipelines are respectively arranged on the first pipeline 7 and the second pipeline 8. The branch pipeline of the first pipeline 7 includes a main water inlet 3 and a number of sub-water outlets 4, and the branch pipeline of the second pipeline 8 includes a main water outlet 1 and a number of sub-water inlets 2;

[0117] Quick connectors are arranged on a number of branch pipelines of the first pipeline 7 and the second pipeline 8, and the perpendicularity of the quick connector to the surface of the manifold 6 is ≤ 0.1 mm.

[0118] Specifically, the Al-Cu-Mg-Si series alloy of the present application is composed of the following components, and the mass percentages of the chemical components are as follows: Cu: 0.8%, Mg: 1.0%, Si: 0.6%, Zr: 0.1%, Ce: 0.061%, and the rest is Al. By adding Ce and Zr elements and increasing the component content, it is subjected to DC semi-continuous casting. After turning the skin, the diameter of the aluminum alloy ingot is Φ148mm. The ingot is placed in an industrial furnace and heated to 520°C - 550°C. This temperature range belongs to the semi-solid heat treatment range. Here, the heat treatment time is 3h, and it is cooled in the furnace to 500°C; then the ingot is placed in a short stress rolling mill for hot rolling. The roll temperature is 450°C - 480°C. Six passes of rolling are selected, and the rolling coefficient for each pass is 1.12 - 1.08 - 1.08 - 1.08 - 1.08 - 1.08. After rolling, the diameter of the aluminum alloy rolled bar is Φ115mm. The rolled aluminum alloy rolled bar is placed in an industrial resistance furnace for stress relief annealing.

[0119] Table 1 Tensile properties of different aluminum alloy ingot specimens

[0120]

[0121] After annealing the rolled aluminum alloy cast bar at 400°C for 1h, it is placed in a forward extrusion press. The temperature range of the extrusion cylinder is 380°C - 440°C. The temperature of the extrusion die is kept the same as that of the extrusion cylinder of the extrusion press. The extrusion speed is 6mm / s - 8mm / s. The extrusion ratio is set to 10 - 15. After extrusion through the extrusion die, it becomes a manifold profile. Setting a lower extrusion ratio can produce a manifold profile with no burr defects on the surface under a lower extrusion pressure.

[0122] Table 2 Forward extrusion temperature and mechanical properties of aluminum alloy cast bars

[0123]

[0124] After producing a manifold profile with no burr defects on the surface, solution heat treatment and water quenching are carried out on the manifold profile. Among them, the solution heat treatment temperature is 540°C and the time is 1h;

[0125] Artificial aging treatment is carried out on the manifold profile. Among them, the artificial aging temperature is 150°C and the time is 12h; Electrolytic polishing and passivation treatment are carried out on the manifold profile after solution heat treatment and artificial aging treatment;

[0126] As Figure 2As shown, after the passivated manifold profile is straightened by a straightening machine and sawed, four aluminum alloy plates of the same material and the same thickness are used to weld and seal both ends of the manifold through a welding process that complies with the corresponding national standards. The ventilation pipeline in the middle of the manifold profile should be retained and the pipelines should be separated; the length, width, and height dimensions of the manifold are 500mm * 100mm * 50mm, the wall thickness is 5mm, the height of the heat dissipation fins is 15mm, the main pipeline interface and the quick-connect joint are connected by a G1 / 2 threaded connection, each pipeline has 3 branches respectively, and the branch pipeline and the quick-connect joint are connected by a G3 / 8 threaded connection. The quick-disconnect joint and the hose are both connected by a quick clamp; after the finished manifold is completed, red and blue markings are set at the interfaces to distinguish the return and supply water pipelines respectively; after installing the corresponding parts (quick-connect joints, hose assemblies) on the manifold branches, the perpendicularity of the parts to the manifold surface is ≤0.1mm.

[0127] This application provides an integrated aluminum alloy manifold with excellent mechanical properties and corrosion resistance by optimizing the proportion of aluminum alloy material components and combining heat treatment processes, hot rolling processes, and extrusion processes.

[0128] On the other hand, as Figure 4 shown, this application provides a heat dissipation control system, which includes a processor, a cold radiator, a water pump, and a manifold prepared according to the following manifold preparation method. The manifold includes a main water inlet, several water outlets, a main water outlet, and several water inlets;

[0129] The processor is connected to several water inlets of the manifold, the main water outlet of the manifold is connected to the cold radiator, the cold radiator is connected to the water pump, the water pump is connected to the main water inlet of the manifold, and several water outlets of the manifold are connected to the processor.

[0130] Among them, the manifold preparation method includes:

[0131] Prepare an aluminum alloy melt and make the aluminum alloy melt include the following elements by mass percentage: copper: 0.8% - 1.0%, magnesium: 0.8% - 1.2%, silicon: 0.4% - 0.8%, zirconium: 0.1% - 0.2%, cerium: 0.061% - 0.08%, and the rest is aluminum;

[0132] Pour the molten aluminum alloy melt into a mold and form an aluminum alloy ingot after cooling;

[0133] Hot roll the aluminum alloy ingot through a semi-solid hot rolling process to obtain an aluminum alloy rod;

[0134] Extrude the aluminum alloy rod into a manifold profile;

[0135] Perform solution heat treatment and aging treatment on the manifold profile;

[0136] Weld and assemble the manifold profiles after solution heat treatment and aging treatment to produce the finished manifold.

[0137] Optionally, the heat dissipation control system further includes a cold radiator fan and a manifold fan.

[0138] The cold radiator fan is arranged on the side of the cold radiator, and the air volume V of the cold radiator fan 空气 is calculated by the formula:

[0139] where Q is the heat dissipation of the coolant, ρ 空气

[0140] is the air density, C p,空气 is the specific heat capacity of air, and ΔT 空气 is the air temperature rise;

[0141] The manifold fan is arranged on the side of the manifold, and the air volume of the manifold fan is the first percentage of the air volume of the cold radiator fan, where the first percentage can be 50%.

[0142] Optionally, the designed flow rate of the main water inlet and the main water outlet ≥ 16 LPM, and the designed flow velocity of the main water inlet and the main water outlet ≤ 2.8 m / s;

[0143] The flow rate range of the main water inlet and the main water outlet is 0 LPM to 36 LPM, and the flow velocity range of the main water inlet and the main water outlet is 0 m / s to 3.5 m / s;

[0144] The designed flow rate of several branch water inlets and several branch water outlets ≥ 1 LPM, and the designed flow velocity of several branch water inlets and several branch water outlets ≤ 2 m / s;

[0145] The flow rate range of several branch water inlets and several branch water outlets is 0 LPM to 2.5 LPM, and the flow velocity range of several branch water inlets and several branch water outlets is 0 m / s to 2.5 m / s;

[0146] Among them, the flow rate uniformity ≤ 10%.

[0147] Optionally, the flow velocity of the water pump ≥ 5 L / min, and the output pressure of the water pump > 1 Mpa;

[0148] The internal working pressure of the manifold ≤ 5 bar, and the pressure-bearing capacity of the manifold ≥ 8 bar.

[0149] Optionally, the heat dissipation control system implements the following heat dissipation control method:

[0150] Judge whether the temperature of the system coolant rises;

[0151] If so, reduce the coolant temperature by increasing the fan air volume of the cold radiator fan and / or increasing the fan air volume of the manifold fan and / or increasing the power of the water pump, and continue to judge whether the system coolant temperature rises; if not, keep the current rotational speeds of the cold radiator and manifold fans and the water pump parameters unchanged;

[0152] Continuing to judge whether the system coolant temperature rises includes:

[0153] Judging whether the system coolant temperature continues to rise;

[0154] If so, increase the rotational speeds of the cold radiator and manifold fans and / or increase the water pump flow rate. When the system coolant temperature continues to rise and exceeds the first threshold, alarm the system coolant temperature and manually intervene and / or increase the heat dissipation area of the cold radiator; if not, keep the current rotational speeds of the cold radiator and manifold fans and the current water pump parameters unchanged.

[0155] Specifically, the liquid cooling system of the heat dissipation control system includes a cold plate on the processor, a manifold, and a radiator fan on the water distributor; heat dissipation components: a cold radiator and a corresponding radiator fan; driving components: a water pump, etc.

[0156] As Figure 4 shown, the overall connection method of the heat dissipation control system is: the cold plate radiator in the cold plate assembly is connected to the processor CPU, and heat dissipation paste is applied on the surface; the outlet of the cold plate radiator is connected to the inlet of the manifold, the main outlet of the manifold is connected to the inlet of the cold radiator, the outlet of the cold radiator is connected to the inlet of the water pump, the outlet of the water pump is connected to the main inlet of the manifold, and the branch outlet of the manifold is connected to the inlet of the cold plate radiator; after the connection is completed, circulating coolant is encapsulated inside the system. The coolant is an ethylene glycol solution with a certain proportion. At the same time, a radiator fan is installed on the side of the cold radiator, and a radiator fan is installed on the side of the manifold.

[0157] Here, the cold radiator fan and the cold radiator actively dissipate heat from the coolant. When the water temperature at the outlet of the manifold is relatively high, the air volume can be increased to reduce the water temperature flowing back to the liquid storage tank through the cold radiator and maintain the water temperature stability of the entire liquid cooling circulation pipeline.

[0158] The water pump is used to stably control the coolant flow rate; through the flow sensor and temperature sensor, the flow rate and fluid temperature can be accurately displayed on the data acquisition module, and the water pump output pressure > 1 MPa.

[0159] Among them, as Figure 5As shown, the data acquisition module includes a temperature sensor, a thermocouple, and a data display module. The temperature sensor can be arranged at 4 to 6 locations, which can be placed at the processor, the return branch of the manifold, the main return outlet, the cold discharge outlet, the main inlet of the manifold, the outlet branch of the manifold, etc. The thermocouple can be placed on the surface of the liquid-cooled radiator (cold plate) to monitor the surface temperature of the processor in real time.

[0160] It can be understood that, as Figure 4 shown, build a heat dissipation control system: use a hose to connect the water pump, the liquid storage tank, the outlet and return pipelines of the manifold, the processor heat dissipation module (cold plate), and the cold radiator in sequence and debug the heat dissipation control system. At the same time, install a radiator fan on the side of the cold radiator and a radiator fan on the side of the manifold.

[0161] The water pump provides a flow rate of not less than 5 L / min. The liquid distribution flow rate from the manifold to the server nodes ensures uniformity. Regardless of whether the server is fully configured, the difference between the maximum flow rate (2.5 LPM) and the minimum flow rate (1 LPM) at each water distribution port does not exceed 10% of the minimum flow rate. The maximum working pressure inside the manifold is 5 bar, and the pressure-bearing capacity is not less than 8 bar; According to Figure 4 the schematic diagram of the heat dissipation control system shown, a total of 5 positions are detected for temperature here, namely the surface temperature T0 of the processor, the temperature T1 of the coolant before entering the processor cooling module, the temperature T2 after flowing out of the processor cooling module, the temperature T3 of the coolant before entering the cold radiator, and the temperature T4 after flowing out of the cold radiator. Thus, the temperature change of the coolant and the heat dissipation situation of the integrated manifold can be dynamically monitored.

[0162] Here, the designed flow rate of the main pipe (main inlet, main outlet) ≥ 16 LPM, the designed flow velocity of the main pipe ≤ 2.8 m / s, the flow rate range supported by the main pipe is 0 LPM to 36 LPM, and the flow velocity range supported by the main pipe is 0 m / s to 3.5 m / s;

[0163] The designed flow rate of the branch pipe (branch inlet, branch outlet) ≥ 1 LPM, the designed flow velocity of the branch pipe ≤ 2 m / s, the flow rate range supported by the branch pipe is 0 LPM to 2.5 LPM, and the flow velocity range supported by the branch pipe is 0 m / s to 2.5 m / s;

[0164] The flow rate uniformity ≤ 10%, that is, the branch pipe flow rates at the farthest end and the nearest end. For example, when the branch pipe flow rate is selected as 1 LPM, the branch pipe flow rate ranges between 0.9 LMP and 1.1 LMP at the farthest end and the nearest end, and the uniformity ≤ 10%.

[0165] [[ID=^{}22]]For example: 2 cold plate servers are being tested, and each server is installed with two processors with a power of 250 W. Calculate the air volume of the radiator fan used for the cold radiator as an example:

[0166] The heat dissipation of the coolant Q = 1000 W, the air temperature rise ΔT空气 = 10°C. Calculate the fan air volume according to the formula and reserve a 20% margin. Then, select a fan for the cold plate with an air volume ≥ 200 CFM; for the fan of the manifold, the air volume can be half of that of the cold plate cooling fan, so select a fan for the manifold with an air volume ≥ 100 CFM.

[0167]

[0168] It can be seen that: at the same flow rate, the safe operating temperature of the CPU is 104°C. When the power is 100 W, the surface temperature of the processor is 49°C. The temperature of the processor will increase linearly with the increase of power. When operating at full power of 250 W, the surface temperature of the processor can reach 90°C; as shown in Table 3, the overall temperature of the coolant is significantly reduced by this heat dissipation control system. The temperature drop of the coolant before and after passing through the processor heat source is 21°C, showing an obvious heat dissipation effect.

[0169] If the temperature continues to rise and the temperature drop of the coolant is not obvious, then increase the power of the cold plate cooling fan and the manifold cooling fan until operating at full power.

[0170] Table 3

[0171]

[0172] As Figure 6 shown, this application also provides a heat dissipation control method. The method applies the heat dissipation control system, and the method includes:

[0173] Judge whether the temperature of the system coolant rises;

[0174] If so, reduce the coolant temperature by increasing the fan air volume of the cold plate fan and / or increasing the fan air volume of the manifold fan and / or increasing the power of the water pump, and continue to judge whether the temperature of the system coolant rises; if not, keep the current rotational speeds of the cold plate and manifold fans and the water pump parameters unchanged;

[0175] Continuing to judge whether the temperature of the system coolant rises includes:

[0176] Judge whether the temperature of the system coolant continues to rise;

[0177] If so, increase the rotational speeds of the cold plate and manifold fans and / or increase the water pump flow rate. When the temperature of the system coolant continues to rise and exceeds the first threshold (94°C), alarm the temperature of the system coolant and manually intervene and / or increase the heat dissipation area of the cold plate; if not, keep the current rotational speeds of the cold plate and manifold fans and the current water pump parameters unchanged.

[0178] This application proposes a forming process for an integrated water distribution and collection device, and at the same time adds heat dissipation teeth to the surface of the water distribution and collection device, uses a cooling fan to provide active heat dissipation for the water distribution and collection device, reduces the weight of the water distribution and collection device while ensuring mechanical properties. This application also proposes a heat dissipation control method based on this water distribution and collection device, which avoids the steps of installing and debugging the CDU when testing the cold plate server itself, and improves the testing efficiency. The water distribution and collection device of this application can be suitable for liquid-cooled server devices of multiple categories, multiple scenarios, and multiple models, and is more convenient to install, use, and maintain.

[0179] Example 1:

[0180] Configure the aluminum alloy melt. Among them, the mass percentages of the metal components of the aluminum alloy melt are: copper: 0.8%, magnesium: 0.8%, silicon: 0.4%, zirconium: 0.1%, cerium: 0.061%, and the rest is aluminum;

[0181] Pour the molten aluminum alloy melt into the mold, and form an aluminum alloy ingot after cooling;

[0182] Hot-roll the aluminum alloy ingot through a semi-solid hot-rolling process. Among them, the number of rolling passes is 6 passes, and the rolling coefficients for each pass are 1.12 - 1.08 - 1.08 - 1.08 - 1.08 - 1.08; the roll temperature is 460°C;

[0183] Extrude and form the hot-rolled aluminum alloy cast bar. The temperature for stress relief annealing of the hot-rolled aluminum alloy cast bar is 400°C, the time is 1h, the extrusion ratio for extruding and forming the aluminum alloy cast bar is 10, and the extrusion speed is 6mm / s;

[0184] After the aluminum alloy water distribution and collection device is formed, perform solution heat treatment, water quenching, and then artificial aging; heat treatment process: the solution temperature is 540°C, the time is 1h, the artificial aging temperature is 150°C, and the time is 12h;

[0185] Weld and assemble the water distribution and collection device profiles after solution heat treatment to generate the finished water distribution and collection device.

[0186] Example 2

[0187] Configure the aluminum alloy melt. Among them, the mass percentages of the metal components of the aluminum alloy melt are: copper: 0.8%, magnesium: 0.8%, silicon: 0.4%, zirconium: 0.1%, cerium: 0.07%, and the rest is aluminum;

[0188] Pour the molten aluminum alloy melt into the mold, and form an aluminum alloy ingot after cooling;

[0189] The aluminum alloy ingot is hot-rolled by a semi-solid hot-rolling process. Among them, the number of rolling passes is 6, and the rolling coefficients for each pass are 1.12 - 1.08 - 1.08 - 1.08 - 1.08 - 1.08 respectively; the roll temperature is 460 °C.

[0190] After hot-rolling the aluminum alloy cast bar, stress relief annealing treatment is carried out on the hot-rolled aluminum alloy cast bar at a temperature of 400 °C for 1 h. The extrusion ratio for extruding and forming the aluminum alloy cast bar is 10, and the extrusion speed is 6 mm / s.

[0191] After the aluminum alloy manifold is formed, solution heat treatment is carried out, followed by water quenching, and then artificial aging; the heat treatment process: the solution temperature is 540 °C for 1 h, and the artificial aging temperature is 150 °C for 12 h.

[0192] The solution heat-treated manifold profiles are welded and assembled to produce the finished manifold.

[0193] Example 3

[0194] The aluminum alloy melt is prepared. Among them, the mass percentages of the metal components in the aluminum alloy melt are: copper: 0.8%, magnesium: 0.8%, silicon: 0.4%, zirconium: 0.1%, cerium: 0.08%, and the rest is aluminum.

[0195] The molten aluminum alloy melt is poured into a mold and cooled to form an aluminum alloy ingot.

[0196] The aluminum alloy ingot is hot-rolled by a semi-solid hot-rolling process. Among them, the number of rolling passes is 6, and the rolling coefficients for each pass are 1.12 - 1.08 - 1.08 - 1.08 - 1.08 - 1.08 respectively; the roll temperature is 460 °C.

[0197] After hot-rolling the aluminum alloy cast bar, stress relief annealing treatment is carried out on the hot-rolled aluminum alloy cast bar at a temperature of 400 °C for 1 h. The extrusion ratio for extruding and forming the aluminum alloy cast bar is 10, and the extrusion speed is 6 mm / s.

[0198] After the aluminum alloy manifold is formed, solution heat treatment is carried out, followed by water quenching, and then artificial aging; the heat treatment process: the solution temperature is 540 °C for 1 h, and the artificial aging temperature is 150 °C for 12 h.

[0199] The solution heat-treated manifold profiles are welded and assembled to produce the finished manifold.

[0200] Comparative Example 1

[0201] Prepare an aluminum alloy melt, in which the mass percentages of the metal components of the aluminum alloy melt are: copper: 0.8%, magnesium: 0.8%, silicon: 0.4%, zirconium: 0.1%, and the rest is aluminum;

[0202] Pour the molten aluminum alloy melt into a mold, and after cooling, form an aluminum alloy ingot;

[0203] Hot-roll the aluminum alloy ingot through a semi-solid hot-rolling process, where the number of rolling passes is 6, and the rolling coefficients for each pass are 1.12 - 1.08 - 1.08 - 1.08 - 1.08 - 1.08; the roll temperature is 460 °C;

[0204] Extrude and form the hot-rolled aluminum alloy cast bar. The stress relief annealing temperature for the hot-rolled aluminum alloy cast bar is 400 °C, the time is 1 h, the extrusion ratio for extruding and forming the aluminum alloy cast bar is 10, and the extrusion speed is 6 mm / s;

[0205] After the aluminum alloy manifold is formed, perform solution heat treatment, water quenching, and then artificial aging; heat treatment process: the solution temperature is 540 °C, the time is 1 h, the artificial aging temperature is 150 °C, and the time is 12 h;

[0206] Weld and assemble the manifold profiles after solution heat treatment to produce a finished manifold.

[0207] The experimental results are shown in Table 4. The mechanical properties of the manifold profiles after solution aging treatment:

[0208] Table 4

[0209]

[0210] It can be seen that the addition of rare earth element Ce has an obvious grain refinement effect on the Al-Cu-Mg-Si-Zr alloy. With the increase of the Ce element content, the strength of the aluminum alloy increases significantly; the addition of Zr and Ce elements can effectively increase the recrystallization temperature of the aluminum alloy, inhibit the recrystallization behavior during the hot extrusion deformation process, play a role in refining grains, and the fine grain strengthening effect improves the mechanical properties of the alloy.

[0211] Comparative Example 2

[0212] Prepare an aluminum alloy melt, in which the mass percentages of the metal components of the aluminum alloy melt are: copper: 0.8%, magnesium: 0.8%, silicon: 0.4%, and the rest is aluminum;

[0213] Pour the molten aluminum alloy melt into a mold, and after cooling, form an aluminum alloy ingot;

[0214] The aluminum alloy ingot is hot-rolled by a semi-solid hot-rolling process. Among them, the number of rolling passes is 6, and the rolling coefficients for each pass are 1.12 - 1.08 - 1.08 - 1.08 - 1.08 - 1.08 respectively; the roll temperature is 460°C;

[0215] The hot-rolled aluminum alloy cast rod is extruded. The stress relief annealing temperature for the hot-rolled aluminum alloy cast rod is 400°C, the time is 1 h, the extrusion ratio for the extrusion of the aluminum alloy cast rod is 10, and the extrusion speed is 6 mm / s;

[0216] After the aluminum alloy manifold is formed, solution heat treatment is carried out, followed by water quenching, and then artificial aging; heat treatment process: the solution temperature is 540°C, the time is 1 h, the artificial aging temperature is 150°C, and the time is 12 h;

[0217] The solution heat-treated manifold profiles are welded and assembled to produce the finished manifold.

[0218] The experimental results are shown in Table 5. The intergranular corrosion depth after solution aging treatment:

[0219] Table 5

[0220] Maximum corrosion depth (μm) Example 1 106 Comparative Example 2 254

[0221] It can be seen that the area fraction of grain boundary precipitates (GBP) is an important parameter for evaluating the sensitivity of SCC (stress corrosion cracking). The Zr element forms the Al3Zr phase in the aluminum alloy. Combining with the heat treatment process, the grain boundary precipitates are coarsened, the spacing of the grain boundary precipitates increases, which reduces the electrochemical performance difference between the grain boundary and the grain interior, and improves the corrosion resistance of the Al-Cu-Mg-Si alloy.

[0222] Here, intergranular corrosion refers to the corrosion phenomenon in which the interface between metal grains expands inward, mainly caused by the difference in chemical composition between the grain surface and the interior and the presence of grain boundary impurities or internal stress; intergranular corrosion will destroy the bonding between grains and significantly reduce the mechanical strength, toughness and fatigue resistance of the aluminum alloy; therefore, the corrosion depth is an important indicator for measuring the intergranular corrosion sensitivity of the aluminum alloy.

[0223] Specific detection method: Refer to "GB / T7998-2023 Evaluation Method for Intergranular Corrosion Sensitivity of Aluminum Alloys". First, the aluminum alloy specimen is treated to remove surface oil stains, immersed in NaOH solution for 10 min until the surface metallic luster disappears, and then rinsed with water; then the aluminum alloy specimen is immersed in nitric acid for 1 min, rinsed with water, air-dried, and the cross-section of the specimen is observed under a scanning electron microscope to characterize the depth of intergranular corrosion.

[0224] As can be seen from the above embodiments, the preparation method of the manifold provided by the present application achieves at least the following beneficial effects:

[0225] The technical solution provided by the embodiments of the present application can produce an aluminum alloy manifold with excellent corrosion resistance and high mechanical properties in the coolant through adding anti-corrosion rare earth elements and through heat treatment, rolling and extrusion molding, reducing the weight while ensuring the mechanical properties; the present application relates to a process combining the deformation and heat treatment of aluminum alloy materials, giving play to the advantages of aluminum alloy such as light weight, small occupied space, and meeting the requirements of the mechanical properties of the water outlet pipe and the return pipe; at the same time, through the pipeline integrated design, the position of the cold plate liquid cooling server can be flexibly adjusted, improving the operation efficiency.

[0226] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A preparation method of a manifold, characterized in that The method includes: Preparing an aluminum alloy melt, and making the aluminum alloy melt include elements with the following mass percentages: copper: 0.8% - 1.0%, magnesium: 0.8% - 1.2%, silicon: 0.4% - 0.8%, zirconium: 0.1% - 0.2%, cerium: 0.061% - 0.08%, and the rest is aluminum; Pouring the molten aluminum alloy melt into a mold, and forming an aluminum alloy ingot after cooling; Performing hot rolling on the aluminum alloy ingot through a semi-solid hot rolling process to obtain an aluminum alloy rod; Extruding the aluminum alloy rod to form a manifold profile; Performing solution heat treatment and aging treatment on the manifold profile; Welding and assembling the manifold profile after the solution heat treatment and aging treatment to produce a finished manifold; The step of extruding the aluminum alloy rod to form a manifold profile includes: Performing annealing treatment on the hot-rolled aluminum alloy rod; Putting the annealed aluminum alloy rod into a forward extruder, and extruding the aluminum alloy rod through an extrusion die to form a manifold profile; Among them, the temperature of the aluminum alloy rod, the temperature of the extrusion cylinder of the extruder, and the temperature of the extrusion die are all 400°C - 420°C, and the temperature at the outlet of the extruder is 480°C - 520°C; the temperature for stress relief annealing treatment of the hot-rolled aluminum alloy rod is 400°C - 420°C, and the time is 1h - 2h; The extrusion ratio for extruding the aluminum alloy rod is 10 - 15, and the extrusion speed is 6mm / s - 8mm / s.

2. The preparation method of the manifold according to claim 1, wherein The step of preparing the aluminum alloy melt includes: Adding pure metal aluminum ingots into a melting furnace, heating the melting furnace to 700°C - 710°C, then adding pure metal magnesium ingots and silicon ingots into the pure metal aluminum melt, stirring evenly after the pure metal magnesium ingots and silicon ingots are melted, and heating the melting furnace to 730°C - 740°C, and then adding zirconium trichloride and rare earth element cerium ingots into the melt to refine the aluminum alloy melt.

3. The preparation method of the manifold according to claim 1, characterized in that, The step of performing hot rolling on the aluminum alloy ingot through a semi-solid hot rolling process includes: Adding the aluminum alloy ingot into an industrial furnace, heating the temperature of the industrial furnace to 520°C - 550°C, performing heat treatment on the aluminum alloy ingot, and cooling the industrial furnace to 500°C; Adding the cooled aluminum alloy ingot into a rolling mill for hot rolling; Among them, the number of rolling passes is 6 - 8 passes, and the elongation coefficient for each rolling pass is between 1.05 and 1.3; the roll temperature is 460°C - 480°C.

4. The preparation method of the manifold according to claim 3, characterized in that, The heat treatment time for the aluminum alloy ingot is 2h - 3h; The reduction ratio for the first rolling pass of hot rolling is 30% - 50%, and the reduction ratio for the subsequent rolling passes gradually decreases to 10% - 20%.

5. The preparation method of the manifold according to claim 1, characterized in that, The step of performing solution heat treatment and aging treatment on the manifold profile includes: Performing solution heat treatment and water quenching on the manifold profile, among which, the solution heat treatment temperature is 540°C - 550°C, and the time is 1h - 1.5h; Performing artificial aging treatment on the manifold profile, among which, the artificial aging temperature is 150°C - 160°C, and the time is 12h - 13h.

6. The preparation method of the manifold according to claim 1, characterized in that, After subjecting the profile of the manifold to solution heat treatment and aging treatment, it includes: Electropolishing and passivation treatment are performed on the manifold profile after solution heat treatment and aging treatment; Among them, the electropolishing and passivation treatment of the manifold profile after solution heat treatment and aging treatment includes: Electroplating a chromium or nickel coating on the surface of the manifold profile, and polishing the surface of the manifold profile by chemical methods; An oxide film is formed on the surface of the manifold profile by anodic oxidation.

7. The preparation method of the manifold according to claim 1, wherein, Welding and assembling the manifold profile to produce a finished manifold, including: Welding the two open ends of the manifold profile with aluminum alloy plates of the same material and the same thickness as the manifold profile, and retaining the ventilation holes in the middle of the manifold profile; Drilling holes in the branch water pipes and the main water pipe of the manifold profile to set up pipeline branches; Threadedly connecting the hole interfaces of the main water pipe and the branch water pipes to quick-connect plugs with hoses to produce a finished manifold.

8. A manifold, characterized in that, The manifold is prepared according to the preparation method of the manifold according to any one of claims 1 to 7.

9. The manifold according to claim 8, characterized in that, The manifold includes a first pipeline and a second pipeline, and a ventilation pipeline is provided between the first pipeline and the second pipeline; A number of heat dissipation fins are provided on the side of the manifold, and the height of the heat dissipation fins is 15 mm to 16 mm; The length of the manifold is 500 mm to 700 mm, the width is 100 mm to 200 mm, the height is 50 mm to 60 mm, and the wall thickness of the manifold is 5 mm to 6 mm.

10. The manifold according to claim 9, characterized in that, A number of branches are respectively provided on the first pipeline and the second pipeline, Quick-connect joints are provided on a number of branches of the first pipeline and the second pipeline, and the perpendicularity of the quick-connect joints to the surface of the manifold is ≤ 0.1 mm.

11. A heat dissipation control system, characterized in that, The heat dissipation control system includes a processor, a radiator, a water pump, and a manifold generated by the preparation method according to any one of claims 1 to 7. The manifold includes a main water inlet, a number of sub-water outlets, a main water outlet, and a number of sub-water inlets; The processor is connected to a number of sub-water inlets of the manifold, the main water outlet of the manifold is connected to the radiator, the radiator is connected to the water pump, the water pump is connected to the main water inlet of the manifold, and a number of sub-water outlets of the manifold are connected to the processor.

12. The heat dissipation control system according to claim 11, wherein The heat dissipation control system further includes a radiator fan and a manifold fan, The cold row fan is arranged on the side of the cold row, and the air volume V of the cold row fan 空气 Through the formula: Perform calculations, where Q is the heat dissipation of the coolant, ρ 空气 is the air density, C p,空气 is the specific heat capacity of air, ΔT 空气 is the air temperature rise; The manifold fan is provided on the side of the manifold, and the air volume of the manifold fan is the first percentage of the air volume of the radiator fan, and the first percentage is 50%.

13. The heat dissipation control system according to claim 11, wherein The designed flow rate of the main water inlet and the main water outlet ≥ 16 LPM, and the designed flow velocity of the main water inlet and the main water outlet ≤ 2.8 m / s; The flow rate range of the main water inlet and the main water outlet is 0 LPM to 36 LPM, and the flow velocity range of the main water inlet and the main water outlet is 0 m / s to 3.5 m / s; The designed flow rate of the number of sub-water inlets and the number of sub-water outlets ≥ 1 LPM, and the designed flow velocity of the number of sub-water inlets and the number of sub-water outlets ≤ 2 m / s; The flow rate range of the several inlet water branches and several outlet water branches is 0 LPM to 2.5 LPM, and the flow velocity range of the several inlet water branches and several outlet water branches is 0 m / s to 2.5 m / s; Among them, the uniformity of the flow rate ≤ 10%.

14. The heat dissipation control system according to claim 12, wherein The heat dissipation control system implements the following heat dissipation control method: Judge whether the temperature of the system coolant rises; If so, reduce the coolant temperature by increasing the fan air volume of the radiator fan and / or increasing the fan air volume of the manifold fan and / or increasing the power of the water pump, and continue to judge whether the temperature of the system coolant rises; If not, keep the current rotational speeds of the radiator and manifold fans and the water pump parameters unchanged; The continued judgment on whether the temperature of the system coolant rises includes: Judge whether the temperature of the system coolant continues to rise; If so, increase the rotational speeds of the radiator and manifold fans and / or increase the water pump flow rate. When the temperature of the system coolant continues to rise and exceeds the first threshold, alarm the temperature of the system coolant and intervene manually and / or increase the heat dissipation area of the radiator; if not, keep the current rotational speeds of the radiator and manifold fans and the current water pump parameters unchanged.

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