A performance server fin test mechanism

Abstract

This invention belongs to the field of heat sink testing technology, and in particular to a testing mechanism for heat sinks in performance servers. It includes a test chamber and a platform placed inside the test chamber. A central air duct for simulating the hot and cold conditions of the heat sink under test is fixed to the side wall of the test chamber along its height. A flat air nozzle is fixed to the central air duct. A transfer air box connected to the central air duct via an air supply pipe is installed on the top of the test chamber. A heater and a cooler are respectively installed on opposite sides of the transfer air box on the top of the test chamber. This invention uses an intermittent extrusion component driven by wind power conversion in conjunction with a magnetic repulsion reset structure to accurately simulate the continuous vibration state of the heat sink during operation. Simultaneously, the central air duct and flat air nozzle complete the efficient simulation of hot and cold conditions, allowing weld inspection to be carried out simultaneously under combined hot, cold, and vibration conditions, closely matching the real service environment of the heat sink in a performance server.

Description

Technical Field

[0001] This invention relates to the field of heat sink testing technology, and more particularly to a testing mechanism for heat sinks used in performance servers. Background Technology

[0002] With the rapid development of cloud computing and big data, the power density of core components in high-performance servers is increasing. As a core heat dissipation component, the integrity of the welds between the heat sink fins and the substrate, and between the heat pipes and the substrate, directly determines the stability of server operation. If there are defects such as microcracks or incomplete welds, they will spread rapidly under the vibration of server operation, causing failures and losses. Therefore, weld quality inspection is a core quality control link.

[0003] Currently, the industry mainstream uses non-destructive testing methods such as ultrasonic testing to inspect welds. However, existing testing institutions all use static testing and hot / cold testing modes, which are out of touch with the actual service conditions of heat sinks. When high-performance servers are running, the heat sinks are constantly vibrating. This alternating stress can induce the propagation of latent defects in the welds, and static testing cannot detect these latent defects, posing a serious risk of missed detection.

[0004] Furthermore, existing weld inspection and cold / hot inspection methods cannot be carried out in conjunction, making it impossible to trace the evolution of defects. At the same time, as servers develop towards high density and miniaturization, weld defects are becoming smaller and more hidden, making static inspection insufficient to meet high-precision requirements.

[0005] In summary, to address the pain points of existing testing procedures such as disconnection, easy omissions, and poor coordination, there is an urgent need to develop a testing mechanism that can simultaneously simulate the real vibration and hot and cold environment of heat sinks during weld inspection, thereby improving testing reliability and meeting the high-precision testing requirements of heat sinks for high-performance servers. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a testing mechanism for heat sinks in performance servers, which more accurately solves the problems mentioned in the background section.

[0007] This invention is achieved through the following technical solution:

[0008] This invention proposes a testing mechanism for heat sinks of performance servers, comprising a test chamber and a placement platform placed inside the test chamber. A central air duct for simulating the hot and cold temperatures of the heat sink under test is fixed to the side wall of the test chamber along its height direction. A flat air nozzle is fixed to the central air duct. A transfer air box, connected to the central air duct via an air supply pipe, is installed on the top of the test chamber. A heater and a cooler are respectively installed on opposite sides of the transfer air box on the top of the test chamber. The heater and cooler supply hot and cold air to the transfer air box via airflow pipes, respectively. A clamping assembly and a mounting plate are installed on the placement platform. The test chamber includes a temperature sensor for monitoring the temperature of the heat sink under test. A stabilizing block and a dark groove at the bottom of the placement platform are fixed inside the test chamber. The two sides of the stabilizing block slide and limit the movement of the dark groove along its length. A first magnet is fixed to the side of the stabilizing block corresponding to the width of the dark groove. A second magnet, repelling the first magnet, is installed inside the dark groove. An intermittent extrusion assembly is connected between the central air duct and the placement platform to convert the airflow from the central air duct into thrust. The test chamber also includes a liftable and multi-directionally movable ultrasonic flaw detection mechanism for flaw detection of the weld seams of the heat sink under test.

[0009] The intermittent extrusion assembly is used to push the placement platform in conjunction with the mutually repelling first and second magnets, causing the placement platform to drive the heat sink under test to simulate vibration.

[0010] Preferably, the intermittent extrusion assembly includes a rotating rod rotatably disposed within the central air duct. The first end of the rotating rod is located within the central air duct, and the second end penetrates the bottom of the central air duct. A turbine blade is fixedly disposed at the first end of the rotating rod, and a wheel is fixedly disposed at the second end of the rotating rod. A plurality of protrusions are disposed circumferentially on the wheel. A mating rod is fixedly disposed on the side of the placement platform opposite to the protrusions. A protrusion with the same protrusion as the protrusion is provided at the end of the mating rod near the protrusion.

[0011] Preferably, the central air duct is L-shaped, and the rotating rod is set along the height of the central air duct.

[0012] Preferably, the ultrasonic flaw detection mechanism includes a first adjustment seat that is vertically and vertically disposed inside the test chamber and corresponds to the upper part of the placement platform. A slide rod is fixedly disposed inside the first adjustment seat in a first direction corresponding to the placement platform. A slider is slidably disposed on the slide rod. A second adjustment seat is fixedly disposed at the bottom of the slider in a second direction corresponding to the placement platform. An electric push rod connected to the slider is fixedly disposed on the first adjustment seat.

[0013] Preferably, an adjusting screw is rotatably provided inside the second adjusting seat, a threaded block is threadedly connected to the adjusting screw, a threaded hole is opened on the threaded block for the adjusting screw to engage, an ultrasonic detector is fixedly provided at the bottom of the threaded block, a spray gun for spraying coupling agent onto the heat sink to be tested on the placement platform is installed on the ultrasonic detector, and an adjusting motor connected to the adjusting screw is installed on the second adjusting seat.

[0014] Preferably, the bottom of the second adjusting seat is provided with a sliding hole for the slider to slide, and the slider's range of motion is located within the sliding hole.

[0015] Preferably, a second hydraulic cylinder connected to the first adjusting seat is installed on the top of the test chamber, and the second hydraulic cylinder is used to drive the first adjusting seat to move up and down.

[0016] Preferably, the clamping assembly includes a clamping plate that is movably disposed relative to the placement platform in a second direction, and a first hydraulic cylinder is fixedly disposed on the placement platform on the side opposite to the clamping plate.

[0017] Preferably, an anti-squeezing pad for protecting the heat sink to be tested is provided on one of the opposite sides of the two clamping plates.

[0018] Preferably, the test chamber is equipped with a sealed door, and the sealed door is equipped with a controller that is connected to the heater, the cooler and the temperature sensor.

[0019] Compared with the prior art, the present invention provides a testing mechanism for heat sinks of performance servers, which has the following beneficial effects:

[0020] This testing mechanism for heatsinks in performance servers uses an intermittent extrusion component driven by wind power conversion, combined with a magnetic repulsion reset structure, to accurately simulate the continuous vibration state of the heatsink during operation. Simultaneously, it integrates an L-shaped central air duct and a flat air nozzle to efficiently simulate hot and cold operating conditions, allowing weld flaw detection to be carried out concurrently under combined hot, cold, and vibration conditions, closely mirroring the real service environment of heatsinks within performance servers. It can effectively detect latent weld defects induced by alternating stress that are undetectable under static inspection, preventing failures caused by the expansion of defects during server operation due to missed latent defects, thus improving server operational stability from the source of detection.

[0021] This testing mechanism for heat sinks in performance servers integrates thermal simulation, vibration simulation, and ultrasonic flaw detection into a single test chamber. These three functions work in tandem and are implemented synchronously, eliminating the need for multiple clamping and relocation of the heat sink. This solves the technical problem of existing mechanisms where weld inspection and thermal testing modes are independent and cannot be coordinated. It can capture real-time changes in weld defects under different temperature conditions and continuous vibration, fully reconstructing and tracing the evolution of weld defects, providing comprehensive and continuous test data support for heat sink weld quality analysis and optimization.

[0022] This testing mechanism for heat sinks in high-performance servers can achieve precise multi-directional adjustment in lifting, lateral, and longitudinal directions through an ultrasonic flaw detection mechanism. Combined with the synchronous operation of the coupling agent spray gun, it ensures the ultrasonic wave propagation effect and achieves high-precision, full-coverage flaw detection of the weld. At the same time, the dynamic detection mode under composite working conditions can accurately identify the smaller and more hidden weld defects that appear in heat sinks as servers develop towards high-density miniaturization, meeting the industry's demand for high-precision inspection of heat sink welds.

[0023] This testing mechanism for performance server heat sinks utilizes an integrated testing structure, allowing all testing and simulation operations to be completed within the same test chamber. This avoids positioning deviations caused by multiple clamping and workstation transfers in traditional testing, ensuring consistent and accurate test results while reducing cumbersome operational steps and significantly improving overall testing efficiency. Furthermore, a controller on the sealed door of the test chamber enables centralized intelligent control of all components, allowing for real-time adjustment of test parameters and reception of feedback data. Operation is convenient and the testing process is highly controllable. Attached Figure Description

[0024] Figure 1 This is a first-view structural schematic diagram of a heat sink testing mechanism for performance servers proposed in this invention;

[0025] Figure 2 This is a second-view structural schematic diagram of a test mechanism for a performance server heat sink proposed in this invention;

[0026] Figure 3 This invention proposes a testing mechanism for heat sinks in performance servers. Figure 2 A magnified structural diagram of part A in the diagram;

[0027] Figure 4 This is a partial cross-sectional view of the structure between the central air duct and the placement platform of a performance server heat sink testing mechanism proposed in this invention.

[0028] Figure 5 This is a schematic diagram of the central air duct, air supply pipe, and air nozzle of a performance server heat sink testing mechanism proposed in this invention.

[0029] Figure 6 This is a schematic diagram of the bottom structure of a placement platform for a performance server heat sink testing mechanism proposed in this invention.

[0030] Figure 7 This is a schematic diagram of the first and second adjustment seats of a performance server heat sink testing mechanism proposed in this invention.

[0031] Figure 8 This is a schematic diagram of the structure of the second adjustment seat for a performance server heat sink testing mechanism proposed in this invention;

[0032] Figure 9 This is a schematic diagram of the bottom structure of the second adjustment seat for a performance server heat sink testing mechanism proposed in this invention;

[0033] Figure 10 This is a schematic diagram of the structure of a heat sink to be tested in a performance server heat sink testing mechanism proposed in this invention.

[0034] In the diagram: 1. Test chamber; 2. Placement platform; 201. First hydraulic cylinder; 202. Clamping plate; 203. Anti-squeezing pad; 3. Central air duct; 301. Transfer air box; 302. Heater; 303. Cooler; 304. Air supply pipe; 305. Air nozzle; 306. Temperature sensor; 4. Rotating rod; 401. Turbine blade; 402. Wheel; 403. Protrusion; 404. Matching rod; 405. Hidden groove; 406. Stabilizing block; 407. First magnet; 408. Second magnet; 5. Second hydraulic cylinder; 501. First adjusting seat; 502. Slide rod; 503. Slider; 504. Electric push rod; 6. Second adjusting seat; 601. Adjusting motor; 602. Adjusting screw; 603. Threaded block; 604. Ultrasonic detector; 605. Spray gun; 7. Sealing door; 8. Controller; 9. Heat sink to be tested. Detailed Implementation

[0035] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings.

[0036] Examples, such as Figures 1-10As shown, an embodiment of the present invention provides a test mechanism for a performance server heatsink, including a test chamber 1 and a placement platform 2 placed inside the test chamber 1. A central air duct 3 for simulating the hot and cold temperatures of the heatsink 9 under test is fixed on the side wall of the test chamber 1 along its height direction. A flat air nozzle 305 is fixed on the central air duct 3. A transfer air box 301 connected to the central air duct 3 via an air supply pipe 304 is installed on the top of the test chamber 1. A heater 302 and a cooler 303 are respectively installed on opposite sides of the transfer air box 301 on the top of the test chamber 1. The heater 302 and the cooler 303 supply hot air and cold air to the transfer air box 301 respectively through airflow pipes. A clamping assembly is installed on the placement platform 2. A temperature sensor 306 is installed on the clamping assembly to monitor the temperature of the heat sink 9 under test. A stabilizing block 406 is fixed inside the test chamber 1 and a dark groove 405 is set at the bottom of the placement platform 2 to accommodate the stabilizing block 406. The two sides of the stabilizing block 406 slide and limit the length surface of the dark groove 405. A first magnet 407 is fixed on the side of the stabilizing block 406 corresponding to the width surface of the dark groove 405. A second magnet 408 that repels the first magnet 407 is installed in the dark groove 405. An intermittent extrusion assembly is connected between the central air duct 3 and the placement platform 2 to convert the air force of the central air duct 3 into thrust. An ultrasonic flaw detection mechanism that can be raised and lowered and moved in multiple directions is provided inside the test chamber 1 to detect flaws in the weld of the heat sink 9 under test.

[0037] The intermittent extrusion assembly is used to push the placement platform 2 in conjunction with the mutually repelling first magnet 407 and second magnet 408, so that the placement platform 2 drives the heat sink 9 under test to perform vibration simulation.

[0038] The temperature of the heat sink 9 under test in the test chamber 1 is regulated by the set warm air fan 302, cold air fan 303 and temperature sensor 306 to simulate the changes of the weld of the heat sink 9 under cold or hot conditions. The ultrasonic flaw detection mechanism completes the flaw detection of the weld of the heat sink 9 under test. In this process, the intermittent extrusion component converts the hot and cold air into driving force to intermittently push the placement platform 2. At the same time, when the placement platform 2 moves, the two first magnets 407 in the dark groove 405 move. When one of the first magnets 407 approaches the opposite second magnet 408, a repulsive force is generated. When the intermittent extrusion component does not push the placement platform 2, the repulsive force is released, and the placement platform 2 is reset. At the same time, the other first magnet 407 and the other second magnet 408 are positioned to provide basic vibration power for the placement platform 2, simulating the vibration effect of the heat sink 9 under test when the server is running. Then the ultrasonic flaw detection mechanism can realize the flaw detection test when the heat sink 9 under test is vibrating.

[0039] In this invention, the intermittent extrusion assembly includes a rotating rod 4 rotatably disposed within a central air duct 3. The first end of the rotating rod 4 is located within the central air duct 3, and the second end penetrates the bottom of the central air duct 3. A turbine blade 401 is fixedly disposed at the first end of the rotating rod 4, and a wheel 402 is fixedly disposed at the second end of the rotating rod 4. A plurality of protrusions 403 are disposed circumferentially on the wheel 402. A mating rod 404 is fixedly disposed on the side of the placement platform 2 opposite to the protrusions 403. The end of the mating rod 404 near the protrusions 403 has a protrusion that is the same as that of the protrusions 403.

[0040] When there is airflow in the central air duct 3, the airflow will drive the turbine blades 401 to rotate, and drive the wheel 402 to rotate through the rotating rod 4. At the same time, the protrusion 403 makes a circular motion and intermittently squeezes the protrusion of the mating rod 404, causing the mating rod 404 to drive the placement platform 2 to move, thereby realizing the conversion of the airflow force into a force that intermittently pushes the placement platform 2.

[0041] In this invention, the central air duct 3 is L-shaped, and the rotating rod 4 is set along the height of the central air duct 3.

[0042] Among them, the central air duct 3L type setting, in conjunction with the flat jet nozzle 305, can cleverly change and guide the direction of airflow, thereby improving the efficiency of temperature control adjustment of the heat sink 9 under test. The spray range of the double-layer jet nozzle 305 is not less than the weld length range of the heat sink 9 under test.

[0043] In this invention, the ultrasonic flaw detection mechanism includes a first adjustment seat 501 that can be raised and lowered inside the test chamber 1 and corresponds to the upper part of the placement platform 2. A slide rod 502 is fixedly provided in the first adjustment seat 501 in a first direction corresponding to the placement platform 2. A slider 503 is slidably provided on the slide rod 502. A second adjustment seat 6 is fixedly provided at the bottom of the slider 503 in a second direction corresponding to the placement platform 2. An electric push rod 504 connected to the slider 503 is fixedly provided on the first adjustment seat 501.

[0044] Among them, the electric push rod 504 can push the slider 503 to move on the slide rod 502, so that the slider 503 drives the second adjustment seat 6 to move stably along the trajectory of the slide rod 502. The first direction of the placement platform 2 refers to the length direction of the placement platform 2.

[0045] In this invention, an adjusting screw 602 is rotatably disposed inside the second adjusting seat 6. A threaded block 603 is threadedly connected to the adjusting screw 602. A threaded hole for the adjusting screw 602 to be threaded is provided on the threaded block 603. An ultrasonic detector 604 is fixedly disposed at the bottom of the threaded block 603. A spray gun 605 for spraying coupling agent onto the heat sink 9 to be tested on the placement platform 2 is installed on the ultrasonic detector 604. An adjusting motor 601 connected to the adjusting screw 602 is installed on the second adjusting seat 6.

[0046] When the adjusting motor 601 starts, it drives the adjusting screw 602 to rotate. The adjusting screw 602 drives the threaded block 603 to move along the second direction of the placement platform 2. The second direction is the same direction as the weld of the heat sink 9 to be tested. The threaded block 603 drives the ultrasonic detector 604 and the spray gun 605 to move. The spray gun 605 can be used to spray coupling agent onto the weld of the heat sink 9 to be tested, and then the ultrasonic detector 604 can be used to complete the flaw detection of the weld of the heat sink 9 to be tested.

[0047] In this invention, the bottom of the second adjusting seat 6 is provided with a sliding hole for the slider 503 to slide, and the movement range of the slider 503 is located within the sliding hole.

[0048] The sliding hole is used to limit the movement of slider 503 during its movement, allowing slider 503 to move and adjust along the trajectory of the sliding hole.

[0049] In this invention, a second hydraulic cylinder 5 connected to the first adjusting seat 501 is installed on the top of the test chamber 1. The second hydraulic cylinder 5 is used to drive the first adjusting seat 501 to move up and down.

[0050] The second hydraulic cylinder 5 drives the second adjusting seat 6 to lift and lower. Alternatively, the second hydraulic cylinder 5 can be driven by other means, such as an electric push rod 504.

[0051] In this invention, the clamping assembly includes a clamping plate 202 that is movably disposed relative to the placement platform 2 in a second direction, and a first hydraulic cylinder 201 is fixedly disposed on the placement platform 2 on the side opposite to the clamping plate 202.

[0052] Among them, such as Figure 10 As shown, when the heat sink 9 to be tested is placed on the placement platform 2, the two first hydraulic cylinders 201 drive the two clamping plates 202 to move closer or further apart, thereby clamping or releasing the heat sink 9 to be tested. Figure 10 The heat sink 9 to be tested is only a schematic diagram. The actual device may differ slightly from this diagram, but this will not affect the actual application of the device.

[0053] In this invention, an anti-squeezing pad for protecting the heat sink 9 to be tested is provided on one side of the two clamping plates 202 facing each other.

[0054] The anti-squeezing pad is designed to prevent damage or marks on the heat sink 9 under test when the clamping plate 202 clamps it. The anti-squeezing pad can be made of rubber.

[0055] In this invention, the test chamber 1 is equipped with a sealing door 7, and the sealing door 7 is equipped with a controller 8 that is connected to the heater 302, the cooler 303 and the temperature sensor 306.

[0056] The controller 8 can receive signals or send commands to the heater 302, the cooler 303, the temperature sensor 306, the first hydraulic cylinder 201, the second hydraulic cylinder 5 and the electric push rod 504. In addition, the sealed door 7 is equipped with transparent glass, allowing staff to observe the real-time situation inside the test chamber 1 through the glass.

[0057] This testing facility uses Test Chamber 1 as its basic platform, integrating three major functions: thermal environment simulation, vibration simulation, and ultrasonic weld inspection. Through the coordinated operation of its components, it integrates the simulation of combined operating conditions and dynamic weld inspection of server heat sinks within Test Chamber 1. This enables defect detection and evolution tracking of heat sink welds under coupled thermal and vibration environments. The overall operation revolves around four core aspects: clamping and fixing, thermal simulation, vibration simulation, and ultrasonic inspection. Each aspect works in concert, and the data is fully controllable. The specific working principle is as follows:

[0058] The heat sink 9 to be tested is placed on the placement platform 2 inside the test chamber 1 and fixed by the clamping assembly of the placement platform 2: the first hydraulic cylinder 201, which is set along the second direction of the placement platform 2, is activated to drive the two clamping plates 202 to move relative to each other until the heat sink is clamped. The rubber anti-squeeze pads on the opposite sides of the clamping plates 202 can avoid clamping damage and ensure the stability of the heat sink clamping. After clamping, the sealing door 7 of the test chamber 1 is closed. Various test parameters are set through the controller 8 on the sealing door 7. The controller 8 establishes a signal connection with all electric components such as the heater 302, the cooler 303, and the temperature sensor 306, enabling command sending and data reception. At the same time, the temperature sensor 306 is attached to the heat sink to prepare for subsequent temperature monitoring. The controller 8 starts the heater 302 or the cooler 303 according to the set parameters. The hot / cold air generated by the equipment is delivered to the transfer air box 301 at the top of the test chamber 1 through the airflow pipe. After the transfer air box 301 buffers and stabilizes the airflow, the hot and cold air is uniformly delivered to the L-shaped central air duct 3 on the side wall of the test chamber 1 through the air delivery pipe 304. The L-shaped central air duct 3 cleverly changes the airflow direction and, together with the flat jet nozzle 305 on the air duct (the spray range is not less than the length of the heat sink weld), evenly sprays the hot and cold air onto the surface of the heat sink to simulate the hot and cold working conditions of the heat sink. Throughout the process, the temperature sensor 306 installed on the clamping assembly monitors the temperature change of the heat sink in real time and feeds the data back to the controller 8. This allows for real-time adjustment of the hot and cold air supply, precise control of the heat sink's test temperature, and simultaneous vibration simulation and thermal simulation. The intermittent extrusion assembly converts the airflow dynamics within the central air duct 3 into mechanical thrust, which, in conjunction with the magnetic repulsion structure, enables the reciprocating vibration of the placement platform 2. This drives the heat sink to simulate the vibration state of a server during operation. Specifically:

[0059] 1. The hot and cold airflow in the central air duct 3 impacts the turbine blades 401 at the first end of the rotating rod 4, causing the rotating rod 4 (set along the height of the L-shaped central air duct 3) to rotate around its own axis. The wheel 402 at the second end of the rotating rod 4 rotates along with it, and several protrusions 403 on the circumference of the wheel 402 make circular motion.

[0060] 2. During the rotation of the protruding head 403, the protrusion of the side fitting rod 404 of the placement platform 2 is intermittently squeezed, and the fitting rod 404 is pushed to drive the placement platform 2 to move. The dark groove 405 at the bottom of the placement platform 2 moves together, so that the first magnet 407 in the dark groove 405 approaches the opposite second magnet 408 in the dark groove 405. Because the two repel each other, the magnetic repulsion potential energy continues to accumulate.

[0061] 3. When the protrusion 403 rotates with the wheel 402 and separates from the protrusion of the mating rod 404, the intermittent thrust disappears, the accumulated magnetic repulsion is released instantly, and the placement platform 2 is quickly reset. At the same time, the first magnet 407 and the second magnet 408 on the other side form a positioning, providing basic power for the next vibration.

[0062] 4. As the wheel 402 continues to rotate, the protrusion 403 and the protrusion of the mating rod 404 repeatedly contact and separate. The placement platform 2 undergoes continuous reciprocating vibration under the alternating action of intermittent mechanical thrust and magnetic repulsion reset force. The sliding limit of the two sides of the stabilizing block 406 and the length surface of the dark groove 405 ensures the stability of the vibration trajectory of the placement platform 2 and avoids deviation.

[0063] The ultrasonic flaw detection mechanism works synchronously and collaboratively with the cold and heat, vibration simulation throughout the entire process, enabling dynamic flaw detection of the welds of the heat sink under combined cold and heat and vibration conditions. This avoids positioning deviations caused by station transfers and improves the accuracy and comprehensiveness of defect detection. The specific adjustment and detection process is as follows:

[0064] 1. Height adjustment: The second hydraulic cylinder 5 at the top of the test chamber 1 drives the first adjusting seat 501 to rise and fall, adjusting the ultrasonic flaw detection mechanism to the detection height that matches the weld of the heat sink, adapting to the detection requirements of heat sinks of different specifications;

[0065] 2. Lateral adjustment (first direction / length direction of placement platform 2): Activate the electric push rod 504 on the first adjustment seat 501 to push the slider 503 to slide stably along the slide rod 502, which drives the second adjustment seat 6 at the bottom to move synchronously. The sliding hole at the bottom of the second adjustment seat 6 limits the slider 503 to ensure the accuracy of the movement trajectory.

[0066] 3. Longitudinal adjustment (second direction of placement platform 2 / weld direction): Start the adjustment motor 601 on the second adjustment seat 6 to drive the adjustment screw 602 to rotate, which will drive the threaded block 603 with threaded connection to move along the weld direction. The ultrasonic detector 604 at the bottom of the threaded block 603 moves synchronously with the spray gun 605.

[0067] 4. Flaw detection: During the movement, the spray gun 605 first sprays a coupling agent onto the weld of the heat sink to ensure the ultrasonic wave propagation effect. Then, the ultrasonic detector 604 performs ultrasonic flaw detection on the weld to detect the weld defects of the heat sink under combined cold and hot and vibration conditions in real time, so as to trace the defect evolution process.

[0068] Throughout the entire test, the temperature data from the temperature sensor 306 and the detection data from the ultrasonic flaw detection are fed back to the controller 8 on the sealing door 7 in real time. The controller 8 can adjust the outlet air temperature / air volume of the heater 302 and the cooler 303 in real time according to the set parameters, and at the same time monitor key test indicators such as vibration frequency and ultrasonic flaw detection location, so as to realize intelligent control, real-time data recording and precise adjustment of the entire heat sink test process, which facilitates subsequent analysis of test data and traceability of weld defects.

[0069] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0070] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A performance server fin test mechanism comprising a test box, characterized in that, The test chamber also includes a placement platform inside the test chamber. A central air duct for simulating the hot and cold temperatures of the heat sink under test is fixed to the side wall of the test chamber along its height. A flat air nozzle is fixed to the central air duct. A transfer air box connected to the central air duct via an air supply pipe is installed on the top of the test chamber. A heater and a cooler are respectively installed on opposite sides of the transfer air box on the top of the test chamber. The heater and cooler supply hot and cold air to the transfer air box via airflow pipes, respectively. A clamping assembly is installed on the placement platform, along with a device for monitoring the heat sink under test mounted on the clamping assembly. The test chamber includes a temperature sensor, a stabilizing block and a dark groove at the bottom of the placement platform for accommodating the stabilizing block, wherein the two sides of the stabilizing block slide and limit the length of the dark groove, a first magnet is fixed on the side of the stabilizing block corresponding to the width of the dark groove, a second magnet that repels the first magnet is installed in the dark groove, an intermittent extrusion assembly is connected between the central air duct and the placement platform to convert the airflow of the central air duct into thrust, and an ultrasonic flaw detection mechanism that can be raised, lowered and moved in multiple directions is provided in the test chamber for flaw detection of the weld seams of the heat sink to be tested. The intermittent extrusion assembly is used to push the placement platform in conjunction with the mutually repelling first and second magnets, causing the placement platform to drive the heat sink under test to simulate vibration.

2. A performance server fin test mechanism according to claim 1, wherein, The intermittent extrusion assembly includes a rotating rod rotatably disposed within the central air duct. The first end of the rotating rod is located within the central air duct, and the second end penetrates the bottom of the central air duct. A turbine blade is fixedly disposed at the first end of the rotating rod, and a wheel is fixedly disposed at the second end of the rotating rod. Several protrusions are disposed circumferentially on the wheel. A mating rod is fixedly disposed on the side of the placement platform opposite to the protrusions. A protrusion with the same protrusion as the protrusion is provided at the end of the mating rod near the protrusion.

3. A performance server fin test mechanism according to claim 2, wherein The central air duct is L-shaped, and the rotating rod is set along the height of the central air duct.

4. A performance server fin testing mechanism according to claim 1, wherein, The ultrasonic flaw detection mechanism includes a first adjustment seat that can be raised and lowered inside the test chamber and corresponds to the upper part of the placement platform. A slide rod is fixedly provided in the first adjustment seat in a first direction corresponding to the placement platform. A slider is slidably provided on the slide rod. A second adjustment seat is fixedly provided at the bottom of the slider in a second direction corresponding to the placement platform. An electric push rod connected to the slider is fixedly provided on the first adjustment seat.

5. A performance server fin testing mechanism according to claim 4, wherein, An adjusting screw is rotatably provided inside the second adjusting seat. A threaded block is threadedly connected to the adjusting screw. A threaded hole is opened on the threaded block for the adjusting screw to be screwed in. An ultrasonic detector is fixed at the bottom of the threaded block. A spray gun for spraying coupling agent onto the heat sink to be tested on the placement platform is installed on the ultrasonic detector. An adjusting motor connected to the adjusting screw is installed on the second adjusting seat.

6. A performance server fin test mechanism according to claim 5, wherein, The bottom of the second adjusting seat is provided with a sliding hole for the slider to slide, and the slider's range of movement is within the sliding hole.

7. A performance server fin testing mechanism according to claim 4, wherein The test chamber is equipped with a second hydraulic cylinder connected to the first adjusting seat. The second hydraulic cylinder is used to drive the first adjusting seat to move up and down.

8. A performance server fin testing mechanism according to claim 1, wherein, The clamping assembly includes a clamping plate that is movably disposed relative to the placement platform in a second direction, and a first hydraulic cylinder is fixedly disposed on the placement platform on the side opposite to the clamping plate.

9. A test mechanism for heat sinks of performance servers according to claim 8, characterized in that, An anti-squeezing pad is provided on the opposite side of the two clamping plates to protect the heat sink to be tested.

10. The performance server fin test mechanism of claim 1, wherein, The test chamber is equipped with a sealed door, and the sealed door is equipped with a controller that is connected to the heater, the cooler and the temperature sensor.

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