Method and device for uniformly and quickly cooling hot isostatic pressing equipment

Abstract

The invention provides a uniform and rapid cooling method and device for hot isostatic pressing equipment. The uniform and rapid cooling method for the hot isostatic pressing equipment comprises the steps that a low-temperature fan is independently controlled to operate, so that low-temperature airflow in a low-temperature area enters a medium-temperature area through a first gas channel; the circulating stirring fan is independently controlled to operate, low-temperature airflow and airflow blown from a material frame area are mixed, the mixed airflow enters the position above a material frame through an inverted-U-shaped gas channel, and after blowing the material frame with workpieces, the mixed airflow enters a medium-temperature area through a first through hole in the bottom of the material frame; and gas in the medium-temperature area rises to the position between the top of the heat insulation screen and the upper plug through a second gas channel and flows downwards to the low-temperature area through a third gas channel between the inner wall of the barrel and the outer surface of the screen wall of the heat insulation screen, and in the gas flowing process, cooling water in the upper plug and the barrel exchanges heat with gas flow. According to the hot isostatic pressing equipment, the workpiece in the hot isostatic pressing equipment can be rapidly and uniformly cooled in the rapid cooling process.

Description

Technical Field

[0001] The present application relates to the technical field of hot isostatic pressing equipment, and in particular to a method and device for uniformly and rapidly cooling hot isostatic pressing equipment. Background Art

[0002] Hot isostatic pressing equipment is an instrument that uses high-pressure gas such as argon as a medium to burn workpieces in a high-temperature and high-pressure sealed container. It applies isostatic pressure in all directions to the powder or sintered billet or parts to be compacted, thereby forming a high-density billet or part. After the hot isostatic pressing equipment completes the burning of the workpiece, it is necessary to use cooling water to cool the working cylinder. Under the influence of the insulation layer and the natural convection characteristics of the gas, there is an obvious temperature step difference in the gas in the working cylinder. If there is not enough pressure rise and gas flow to make the high and low temperature gases convect quickly, the natural cooling rate is very slow. Therefore, it is necessary to force convection of the high and low temperature gases in the working cylinder to achieve the purpose of accelerating the cooling rate and reducing the temperature gradient.

[0003] Existing hot isostatic pressing equipment can use fans for rapid cooling. Specifically, a coaxial circulating fan and a cooling fan that share a motor can be used. At this time, the fan speed cannot be controlled individually, which can easily lead to uncontrollable sub-high temperature gas temperature and uneven temperature, which in turn makes the cooling speed of the workpiece seriously uneven, thereby causing workpiece deformation and internal stress, affecting product quality. Summary of the invention

[0004] In view of this, an embodiment of the present application provides a method and device for uniformly and rapidly cooling a hot isostatic pressing equipment, so as to solve the problem of poor workpiece cooling effect during rapid cooling of the hot isostatic pressing equipment in the prior art.

[0005] In a first aspect of an embodiment of the present application, a method for uniformly and rapidly cooling a hot isostatic pressing device is provided, wherein the hot isostatic pressing device comprises an ultra-high pressure container consisting of a cylinder, an upper plug and a lower plug, wherein the interior of the cylinder and the interior of the upper plug are provided with cooling water channels, wherein the ultra-high pressure container is provided with an inverted cup-shaped heat shield, a cylindrical heating element and a cylindrical material frame from the outside to the inside, wherein a heat insulating bottom pad is provided below the heat insulating screen, wherein a circulating stirring fan and a low-temperature fan independently configured with motors are respectively located above and below the heat insulating bottom pad, wherein a first gas channel which passes through the heat insulating bottom pad from top to bottom is provided in the middle thereof, wherein the method for uniformly and rapidly cooling the hot isostatic pressing device comprises: independently controlling the operation of the low-temperature fan so that a low-temperature airflow in the low-temperature zone below the heat insulating bottom pad is generated; Enter the medium temperature zone between the material frame and the thermal insulation base pad through the first gas channel; independently control the circulation stirring fan to mix the low temperature airflow with the airflow blown from the material frame area, and make the mixed airflow enter the top of the material frame through the inverted U-shaped gas channel along the outside-top-inside of the frame wall of the material frame, after blowing the material frame with the workpiece placed, enter the medium temperature zone through the first through hole at the bottom of the material frame, and make the gas in the medium temperature zone rise to between the top of the thermal insulation screen and the upper plug through the second gas channel inside the screen wall of the thermal insulation screen, and flow downward to the low temperature zone through the third gas channel between the inner wall of the cylinder and the outer surface of the screen wall of the thermal insulation screen. During the gas flow process, the cooling water in the upper plug and the cylinder body exchanges heat with the airflow.

[0006] According to a second aspect of an embodiment of the present application, a uniform and rapid cooling device for hot isostatic pressing equipment is provided, wherein the hot isostatic pressing equipment comprises an ultra-high pressure container consisting of a cylinder, an upper plug and a lower plug, wherein an inverted cup-shaped heat insulation screen, a cylindrical heating element and a cylindrical material frame are sequentially arranged in the ultra-high pressure container from the outside to the inside, and an insulating bottom pad is arranged below the heat insulation screen. The uniform and rapid cooling device for hot isostatic pressing equipment comprises: a circulating stirring fan and a low-temperature fan with independently configured motors respectively located above and below the heat insulation bottom pad, and cooling water channels arranged inside the cylinder and inside the upper plug, wherein a first gas channel which passes through from top to bottom is arranged in the middle of the heat insulation bottom pad, a second gas channel is arranged inside the screen wall of the heat insulation screen, a third gas channel is arranged between the inner wall of the cylinder and the outer surface of the screen wall of the heat insulation screen, an inverted U-shaped gas channel is arranged along the outer side, top and inner side of the frame wall of the material frame, and a first through hole is arranged at the bottom of the material frame.

[0007] In some embodiments, the screen wall of the heat insulation screen includes an inner layer of a composite thermal insulation material and an outer layer of metal, a second gas channel is arranged between the inner layer of the composite thermal insulation material and the outer layer of metal, an air flow inlet of the second gas channel is arranged at the lower part of the inner layer of the composite thermal insulation material, and an air flow outlet of the second gas channel is arranged above the outer layer of metal.

[0008] In some embodiments, the insulation base pad is located inside the insulation screen, the air flow inlet is arranged above the insulation base pad, and the gas in the medium temperature zone between the material frame and the insulation base pad enters the second gas channel through the air flow inlet and is discharged through the air flow outlet.

[0009] In some embodiments, the fan motor of the circulating stirring fan and the fan motor of the low-temperature fan are both located under the thermal insulation base pad, and the transmission shaft of the circulating stirring fan passes through the hollow shaft of the low-temperature fan to connect the fan motor of the circulating stirring fan and the circulating stirring fan.

[0010] In some embodiments, the high pressure medium in the ultra-high pressure container is argon or nitrogen.

[0011] In some embodiments, the cooling water channel inside the upper plug includes an inlet and outlet water channel located at the upper part of the upper plug and a cooling channel located at the lower part of the upper plug, and the diameter of the cooling channel is at least twice the diameter of the inlet and outlet water channel.

[0012] In some embodiments, the upper end of the material frame is open and is composed of multiple single frames stacked. Except for the bottom layer, a second through hole is set on the bottom of each single frame, and the number of second through holes on a single single frame is less than the number of first through holes at the bottom of the material frame.

[0013] In some embodiments, the material of the frame includes any one of the following: stainless steel, high temperature alloy, tungsten, molybdenum, and carbon / carbon composite material.

[0014] In some embodiments, the heating element is in the shape of a wire, a rod or a ribbon, and the material of the heating element includes any one of the following: iron-chromium-aluminum alloy, nickel-chromium alloy, tungsten, molybdenum, graphite and carbon / carbon composite material.

[0015] The beneficial effects of the embodiments of the present application compared with the prior art are as follows: by setting a cooling water channel in the upper plug and the cylinder of the ultra-high pressure container of the hot isostatic pressing equipment to cool the airflow, and independently configuring motors for the circulating stirring fan and the low-temperature fan to be independently controlled, air can be supplied at different wind speeds or circulating stirring can be performed, thereby allowing the workpieces in the hot isostatic pressing equipment to be quickly and evenly cooled after processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of a uniform and rapid cooling system for hot isostatic pressing equipment provided in an embodiment of the present application;

[0018] Figure 2 It is a schematic flow chart of a method for uniform and rapid cooling of hot isostatic pressing equipment provided in an embodiment of the present application;

[0019] Figure 3 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0020] Description of reference numerals:

[0021] A100, low temperature zone; A200, medium temperature zone; A300, high temperature zone; B401, thermal insulation pad; B402, bottom of material frame; B403, material frame; B404, cylinder; B405, thermal insulation screen; B406, heating element; B407, lower plug; B408, low temperature fan; B409, fan motor; B410, circulating stirring fan; B411, fan motor; B412, upper plug; D601, first gas channel; D602, second gas channel; D603, third gas channel; D604, inverted U-shaped gas channel; D605, cooling water channel; D606, cooling water channel; D607, upper space; C501, low temperature airflow; C502, medium temperature airflow; C503, high temperature airflow; E100, workpiece. DETAILED DESCRIPTION

[0022] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0023] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0024] In addition, it should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0025] The working principle of hot isostatic pressing equipment is based on the isostatic pressing principle, which evenly transmits the externally applied pressure to all directions, so that the pressed blank can maintain its original shape and dimensional accuracy at high temperature. Under high temperature conditions, by applying high pressure, the blank can be subjected to pressure in three directions, thus forming a highly dense material. When the hot isostatic pressing equipment is working, it is necessary to force convection of the high and low temperature gases in the working cylinder to achieve the purpose of accelerating the cooling rate and reducing the temperature gradient.

[0026] In a fan rapid cooling method of a hot isostatic pressing equipment in the prior art, the low-temperature airflow generated by the cooling fan enters the upper end of the tray in the loading area of ​​the hot isostatic pressing equipment through the annular gas channel set in the tray. The circulating fan located at the upper end of the tray evenly stirs the low-temperature airflow into sub-high temperature gas, and pushes it to the working hot zone to complete the rapid cooling of the working hot zone. In this scheme, the circulating fan and the cooling fan are coaxial and share a motor. The speed cannot be controlled separately. Due to different hot isostatic pressing process parameters, it is easy to cause the sub-high temperature gas temperature to be uncontrollable. In addition, the loading area of ​​the hot isostatic pressing equipment is cylindrical, and the gas pressure in the hot zone is very high. Due to the chimney effect, hot air rises and cold air falls, which is easy to cause uneven temperature. The gas blown out by the circulating fan in the above cooling system blows from bottom to top through the tray and the workpiece, and the hot air rises rapidly. Due to the obstruction of the tray and the workpiece, most of the gas heat exchange occurs in the lower part of the loading area, resulting in a lower temperature in the lower part, thereby causing serious uneven cooling rates of the upper and lower workpieces.

[0027] In a jet-type rapid cooling method for hot isostatic pressing equipment in the prior art, a low-temperature fluid is sprayed into the bottom of the pressure vessel through a nozzle for rapid cooling. The low-temperature gas is mixed with the high-temperature gas near the workpiece to form a gas with a lower temperature, which then sweeps over the surface of the workpiece to achieve the purpose of rapid cooling. This method is only applicable to small hot isostatic pressing equipment, and has a very limited cooling effect on large and extra-large hot isostatic pressing equipment. In addition, the temperature at the nozzle outlet is significantly lower than the temperature at a slightly farther distance, which can easily cause uneven cooling speed of the workpiece, thereby causing deformation and internal stress of the workpiece, affecting product quality.

[0028] To overcome the above problems, the embodiments of the present application provide a method and device for uniform and rapid cooling of hot isostatic pressing equipment, so as to provide a method and device for uniform airflow cooling in the working hot zone of the hot isostatic pressing equipment, which can be applicable to a rapid cooling solution for large, especially extra-large, hot isostatic pressing equipment.

[0029] A method and device for uniformly and rapidly cooling hot isostatic pressing equipment according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0030] like Figure 1As shown, in a uniform and rapid cooling system of a hot isostatic pressing equipment disclosed in an embodiment of the present application, the hot isostatic pressing equipment includes an ultra-high pressure container composed of a cylinder B404, an upper plug B412 and a lower plug B407, a cooling water channel D605 is arranged inside the cylinder, a cooling water channel D606 is arranged inside the upper plug, and an inverted cup-shaped heat shield B405, a cylindrical heating element B406 and a cylindrical material frame B403 are arranged in sequence from the outside to the inside of the ultra-high pressure container, an insulation bottom pad B401 is arranged below the insulation shield, a circulating stirring fan B410 and a low-temperature fan B408 with independent motors are respectively located above and below the insulation bottom pad, and a first gas channel D601 that runs through from top to bottom is arranged in the middle of the insulation bottom pad. The first gas channel connects the low-temperature zone A100 and the medium-temperature zone A200, and the second gas channel D602 and the third gas channel D603 connect the high-temperature zone A300 and the low-temperature zone A100. The inverted U-shaped gas channel D604 connects the high temperature zone A300 and the medium temperature zone A200. The low temperature airflow C501 enters the medium temperature zone through the first gas channel, and is mixed with the airflow flowing into the high temperature zone to obtain the medium temperature airflow C502. The workpiece E100 is arranged on the material frame B403. A plurality of first through holes are arranged on the bottom B402 of the material frame. The high temperature airflow C503 formed after purging the material frame on which the workpiece is placed enters the medium temperature zone through the first through hole at the bottom of the material frame. There is an upper space D607 between the top of the heat insulation screen and the upper plug, and the upper space connects the second gas channel and the third gas channel. The fan motor B411 of the circulating stirring fan and the fan motor B409 of the low temperature fan are both located under the heat insulation base pad.

[0031] Specifically, the heat shield may include a composite insulation material layer, which may be composed of a metal and an insulation material. The heating element is connected to a power source via an electrode to form a heating circuit. The electrode may be mounted on the upper surface of the lower plug or embedded and exposed to the upper surface of the lower plug to facilitate the heating element to draw electricity. Preferably, the electrode is a copper electrode, but is not limited thereto. The cooling water channel is filled with cooling water, which can be used to quickly cool the airflow.

[0032] like Figure 2 As shown, the method for uniformly and rapidly cooling the hot isostatic pressing equipment in the embodiment of the present application includes:

[0033] Step S201, independently controlling the low-temperature fan to operate so that the low-temperature air flow in the low-temperature zone below the thermal insulation pad enters the medium-temperature zone between the material frame and the thermal insulation pad through the first air channel.

[0034] Step S202, independently control the operation of the circulating stirring fan to mix the low-temperature airflow with the airflow blown from the material frame area, and allow the mixed airflow to enter the top of the material frame through the inverted U-shaped gas channel along the outside-top-inside of the frame wall of the material frame, and after blowing the material frame with the workpiece placed thereon, enter the medium temperature zone through the first through hole at the bottom of the material frame, and allow the gas in the medium temperature zone to rise to between the top of the heat insulation screen and the upper plug through the second gas channel inside the screen wall of the heat insulation screen, and flow downward to the low-temperature zone through the third gas channel between the inner wall of the cylinder and the outer surface of the screen wall of the heat insulation screen. During the gas flow process, the cooling water in the upper plug and the cylinder body exchange heat with the airflow.

[0035] In the technical solution of the embodiment of the present application, the rotation of the circulating stirring fan and the low temperature fan can be independently controlled. Specifically, the fan speed can be automatically adjusted according to the cooling speed requirement, so as to achieve a higher cooling speed.

[0036] In the hot isostatic pressing equipment of the disclosed embodiment, the two ends of the cylinder of the ultra-high pressure container are sealed with an upper plug and a lower plug respectively, thereby forming a closed inner cavity area to prevent the gas in the cavity from leaking out. The opening of the inverted cup-shaped structure of the heat shield is placed downward and is mounted on the heat insulation base pad. The heating element is fixed on the inner wall of the heat shield, and the material frame is placed above the heat insulation base pad. The heat shield can be used to isolate the heat generated by the heating element and protect the pressure container within a safe temperature range.

[0037] When using hot isostatic pressing equipment to process workpieces, the workpiece can be placed in a material frame, and the material frame can be placed on an insulating base pad. After that, the heat shield is placed on the insulating base pad, and the ultra-high pressure container is sealed with an upper plug before hot isostatic pressing. During the firing process, the heating element and the heat shield can form a thermal field, the cylindrical material frame and the workpiece are located in the thermal field, and the insulating base pad is located at the bottom of the thermal field.

[0038] When implementing rapid cooling, the independently controllable circulating stirring fan and low-temperature fan start to operate, the low-temperature airflow enters the medium-temperature zone through the first gas channel, and mixes with the high-temperature airflow blown from the high-temperature zone to become the medium-temperature airflow, and the medium-temperature airflow enters the upper part of the hot zone along the inverted U-shaped gas channel in the hot field, sweeps the workpiece and the material frame, and enters the medium-temperature zone through the first through hole at the bottom of the material frame, so as to achieve uniform cooling of the workpiece in the hot zone. At the same time, the gas in the medium-temperature zone rises to the top space of the heat insulation screen through the second gas channel inside the heat insulation screen wall, and then flows downward along the third gas channel between the inner wall of the cylinder and the outer surface of the heat insulation screen wall, and at the same time exchanges heat with the cooling water of the upper plug and the cooling water in the cylinder, becomes the low-temperature airflow, enters the low-temperature zone, and is blown into the medium-temperature zone along the first gas channel by the low-temperature fan, and the low-temperature airflow and the high-temperature airflow blown from the high-temperature zone are stirred and mixed by the circulating stirring fan to become the medium-temperature airflow, and the medium-temperature airflow enters the upper part of the hot zone along the inverted U-shaped gas channel in the hot field, sweeps the workpiece and the material frame, and enters the medium-temperature zone through the first through hole at the bottom of the material frame, so as to achieve uniform and rapid cooling of the workpiece in the hot zone.

[0039] In the related art, when the hot isostatic pressing equipment ends the high temperature and high pressure process and starts to implement rapid cooling, the chimney effect caused by the cylindrical shape characteristics of the hot isostatic pressing equipment thermal field causes hot air to rise and cold air to sink, resulting in high temperature in the upper part of the hot zone and low temperature in the lower part, and the temperature difference is extremely large. By adopting the technical solution of the embodiment of the present application, when implementing rapid cooling, the medium temperature airflow can sweep the workpiece from top to bottom and circulate back and forth to ensure that the temperature of the upper and lower parts of the hot zone is uniform during rapid cooling.

[0040] The uniform and rapid cooling device for hot isostatic pressing equipment provided in the embodiment of the present application is applied to the hot isostatic pressing equipment, wherein the hot isostatic pressing equipment comprises an ultra-high pressure container consisting of a cylinder, an upper plug and a lower plug, wherein an inverted cup-shaped heat insulation screen, a cylindrical heating element and a cylindrical material frame are sequentially arranged from the outside to the inside in the ultra-high pressure container, and an insulation bottom pad is arranged below the insulation screen. The uniform and rapid cooling device for hot isostatic pressing equipment comprises: a circulating stirring fan and a low-temperature fan with independently configured motors respectively located above and below the insulation bottom pad, and cooling water channels arranged inside the cylinder and inside the upper plug, wherein a first gas channel which passes through from top to bottom is arranged in the middle of the insulation bottom pad, a second gas channel is arranged inside the screen wall of the insulation screen, a third gas channel is arranged between the inner wall of the cylinder and the outer surface of the screen wall of the insulation screen, an inverted U-shaped gas channel is arranged along the outer side, top and inner side of the frame wall of the material frame, and a first through hole is arranged at the bottom of the material frame.

[0041] In the embodiment of the present application, the screen wall of the heat insulation screen includes an inner layer of composite thermal insulation material and an outer metal layer, a second gas channel is arranged between the inner layer of composite thermal insulation material and the outer metal layer, an air flow inlet of the second gas channel is arranged at the lower part of the inner layer of composite thermal insulation material, and an air flow outlet of the second gas channel is arranged above the outer metal layer. Since the equipment of the present application is hot isostatic pressing equipment, each component needs to withstand a certain pressure during operation, so the heat insulation screen needs to have a certain strength to prevent deformation, and the metal layer and the thermal insulation layer can be composited to meet the requirements of comprehensive thermal insulation and strength.

[0042] Specifically, the second gas channel and the third gas channel are separated by a metal outer layer of the heat insulation shield, and the metal outer layer can be regarded as a metal cylindrical shell.

[0043] In an embodiment of the present application, the insulating base pad is located inside the insulating screen, the air flow inlet is arranged above the insulating base pad, and the gas in the medium temperature zone between the material frame and the insulating base pad enters the second gas channel through the air flow inlet and is discharged through the air flow outlet.

[0044] In an embodiment of the present application, the fan motor of the circulating stirring fan and the fan motor of the low-temperature fan are both located under the thermal insulation base pad, and the transmission shaft of the circulating stirring fan passes through the hollow shaft of the low-temperature fan to connect the fan motor of the circulating stirring fan and the circulating stirring fan, so that the circulating stirring fan can have an independent fan motor.

[0045] In the embodiment of the present application, the material of the cylinder of the ultra-high pressure container can be alloy steel, but is not limited thereto. The high pressure medium in the ultra-high pressure container is argon or nitrogen.

[0046] In the embodiment of the present application, the cooling water channel inside the upper plug includes an inlet and outlet water channel located at the upper part of the upper plug and a cooling channel located at the lower part of the upper plug, and the diameter of the cooling channel is at least twice the diameter of the inlet and outlet water channel. The cooling water in the cooling water channel in the cylinder flows through the cooling water channel from bottom to top to provide a better cooling effect.

[0047] The material frame is mainly used to hold workpieces. It has a variety of shapes and no specific requirements. However, since the internal space of the heat shield is cylindrical, in order to obtain the maximum loading capacity, the material frame is generally cylindrical. The material of the material frame can be any of the following: stainless steel, high temperature alloy, tungsten, molybdenum and carbon / carbon composite material. The material of the material frame can be selected according to the different use temperatures.

[0048] In the embodiment of the present application, the upper end of the material frame is open and is formed by stacking a plurality of single frames. Except for the bottom layer, a second through hole is provided on the bottom of each single frame. Figure 2 As shown, the number of second through holes on a single frame is less than the number of first through holes at the bottom of the frame. Providing a larger number of first through holes can ensure that the airflow in the high temperature zone quickly enters the medium temperature zone, thereby accelerating the cooling speed of the workpiece.

[0049] In the embodiment of the present application, the shape of the heating element may be filamentary, rod-shaped or ribbon-shaped, and is not limited thereto. The specific size and shape parameters of the heating element may be designed and determined according to the working area size and temperature requirements of the hot isostatic pressing equipment. The material of the heating element may be any of the following: iron-chromium-aluminum alloy, nickel-chromium alloy, tungsten, molybdenum, graphite and carbon / carbon composite material, and is not limited thereto. The material of the heating element may be selected according to the different use temperatures.

[0050] By using the method and device for uniformly and quickly cooling the hot isostatic pressing equipment of the embodiment of the present application, a cooling water channel can be set in the upper plug and the cylinder of the ultra-high pressure container of the hot isostatic pressing equipment to cool the airflow, and motors can be independently configured for the circulating stirring fan and the low-temperature fan to control them independently, so that air can be supplied at different wind speeds or circulating stirring can be performed, thereby allowing the workpieces in the hot isostatic pressing equipment to be quickly and uniformly cooled after processing.

[0051] An embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the computer program.

[0052] An embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the above method are implemented.

[0053] Figure 3 Schematic diagram of an electronic device 3 provided in an embodiment of the present application. Figure 3 As shown, the electronic device 3 of this embodiment includes: a processor 301, a memory 302, and a computer program 303 stored in the memory 302 and executable on the processor 301. When the processor 301 executes the computer program 303, the steps in the above-mentioned method embodiments are implemented. Alternatively, when the processor 301 executes the computer program 303, the functions of the modules in the above-mentioned device embodiments are implemented.

[0054] The electronic device 3 may be a desktop computer, a notebook, a PDA, a cloud server, or other electronic device. The electronic device 3 may include, but is not limited to, a processor 301 and a memory 302. Those skilled in the art will appreciate that Figure 3 The electronic device 3 is merely an example and does not limit the electronic device 3 , and may include more or less components than those shown in the figure, or different components.

[0055] The processor 301 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0056] The memory 302 may be an internal storage unit of the electronic device 3, for example, a hard disk or memory of the electronic device 3. The memory 302 may also be an external storage device of the electronic device 3, for example, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 3. The memory 302 may also include both an internal storage unit of the electronic device 3 and an external storage device. The memory 302 is used to store computer programs and other programs and data required by the electronic device.

[0057] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0058] If the integrated module is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. The computer program may include computer program code, and the computer program code may be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electric carrier signals and telecommunication signals.

[0059] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for uniform and rapid cooling of hot isostatic pressing equipment, characterized in that: The hot isostatic pressing equipment comprises an ultra-high pressure container consisting of a cylinder, an upper plug and a lower plug, wherein the interior of the cylinder and the interior of the upper plug are provided with cooling water channels, wherein the ultra-high pressure container is provided with an inverted cup-shaped heat shield, a cylindrical heating element and a cylindrical material frame from the outside to the inside, wherein a heat insulating bottom pad is provided below the heat insulating screen, and a circulating stirring fan and a low-temperature fan with independent motors are respectively located above and below the heat insulating bottom pad, wherein a first gas channel which runs through from top to bottom is provided in the middle of the heat insulating bottom pad, and the uniform and rapid cooling method of the hot isostatic pressing equipment comprises: Independently controlling the low-temperature fan to operate so that the low-temperature airflow in the low-temperature zone below the thermal insulation base pad enters the medium-temperature zone between the material frame and the thermal insulation base pad through the first air channel; The circulation stirring fan is independently controlled to operate, the low-temperature airflow is mixed with the airflow blown from the material frame area, and the mixed airflow enters above the material frame through an inverted U-shaped gas channel along the outside-top-inside of the frame wall of the material frame, and after purging the material frame with the workpiece placed thereon, enters the medium temperature zone through the first through hole at the bottom of the material frame, and the gas in the medium temperature zone rises to between the top of the heat insulation screen and the upper plug through the second gas channel inside the screen wall of the heat insulation screen, and flows downward to the low-temperature zone through the third gas channel between the inner wall of the cylinder and the outer surface of the screen wall of the heat insulation screen. During the gas flow, the cooling water in the upper plug and the cylinder body exchanges heat with the airflow.

2. A uniform and rapid cooling device for hot isostatic pressing equipment, characterized in that: The hot isostatic pressing equipment includes an ultra-high pressure container composed of a cylinder, an upper plug and a lower plug. The ultra-high pressure container is provided with an inverted cup-shaped heat shield, a cylindrical heating element and a cylindrical material frame from the outside to the inside. A heat insulation pad is provided under the heat shield. The uniform and rapid cooling device of the hot isostatic pressing equipment includes: A circulating stirring fan and a low-temperature fan with independent motors are respectively located above and below the thermal insulation base pad, and cooling water channels are arranged inside the cylinder and the upper plug, wherein a first gas channel that runs through from top to bottom is arranged in the middle of the thermal insulation base pad, a second gas channel is arranged inside the screen wall of the thermal insulation screen, a third gas channel is arranged between the inner wall of the cylinder and the outer surface of the screen wall of the thermal insulation screen, an inverted U-shaped gas channel is arranged along the outer side, top and inner side of the frame wall of the material frame, and a first through hole is arranged at the bottom of the material frame.

3. The uniform and rapid cooling device for hot isostatic pressing equipment according to claim 2, characterized in that: The screen wall of the heat insulation screen includes an inner layer of a composite thermal insulation material and an outer layer of metal, a second gas channel is arranged between the inner layer of the composite thermal insulation material and the outer layer of metal, an air flow inlet of the second gas channel is arranged at the lower part of the inner layer of the composite thermal insulation material, and an air flow outlet of the second gas channel is arranged above the outer layer of metal.

4. The uniform and rapid cooling device for hot isostatic pressing equipment according to claim 3, characterized in that: The thermal insulation base pad is located inside the thermal insulation screen, the air flow inlet is arranged above the thermal insulation base pad, and the gas in the medium temperature zone between the material frame and the thermal insulation base pad enters the second gas channel through the air flow inlet and is discharged through the air flow outlet.

5. The uniform and rapid cooling device for hot isostatic pressing equipment according to claim 2, characterized in that: The fan motor of the circulating stirring fan and the fan motor of the low-temperature fan are both located below the thermal insulation base pad, and the transmission shaft of the circulating stirring fan passes through the hollow shaft of the low-temperature fan to connect the fan motor of the circulating stirring fan and the circulating stirring fan.

6. The uniform and rapid cooling device for hot isostatic pressing equipment according to claim 2, characterized in that: The high-pressure medium in the ultra-high-pressure container is argon or nitrogen.

7. The uniform and rapid cooling device for hot isostatic pressing equipment according to claim 2, characterized in that: The cooling water channel inside the upper plug includes an inlet and outlet water channel located at the upper part of the upper plug and a cooling channel located at the lower part of the upper plug. The diameter of the cooling channel is at least twice the diameter of the inlet and outlet water channel.

8. The uniform and rapid cooling device for hot isostatic pressing equipment according to claim 2, characterized in that: The material frame is open at the upper end and is formed by stacking multiple single frames. Except for the bottom layer, each single frame is provided with a second through hole at the bottom. The number of second through holes on a single single frame is less than the number of first through holes at the bottom of the material frame.

9. The uniform and rapid cooling device for hot isostatic pressing equipment according to claim 8, characterized in that: The material of the material frame includes any one of the following: stainless steel, high temperature alloy, tungsten, molybdenum and carbon / carbon composite material.

10. The uniform and rapid cooling device for hot isostatic pressing equipment according to any one of claims 3 to 9, characterized in that: The shape of the heating element is filamentary, rod-like or ribbon-like, and the material of the heating element includes any one of the following: iron-chromium-aluminum alloy, nickel-chromium alloy, tungsten, molybdenum, graphite and carbon / carbon composite material.

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