A device for testing mechanical properties of a metallic material

Abstract

The utility model relates to material mechanics performance detection equipment technical field discloses a kind of metal material mechanics performance testing device, including bearing table, heating mechanism, clamping mechanism, extrusion mechanism, lifting mechanism, pressure detection mechanism, lower pressure mechanism and controller;Belt slot L-shaped block is arranged on the side of bearing table, and multiple U-shaped support blocks are arranged on the upper end, to realize the feeding guidance and support of long strip metal long block;Heating mechanism is sleeved on the outer periphery of metal long block to realize the uniform heating of medium frequency;Clamping mechanism and extrusion mechanism transmission cooperation, to realize the quick pre-clamping and stable force-increasing locking of sample;Lifting mechanism drives sample to adjust vertical height, and adapts to different specifications sample.The utility model solves the problem of long sample positioning difficulty, unstable clamping, uneven heating, force value detection lag in the prior art, with the advantages of accurate positioning, reliable clamping, high testing precision and strong versatility.

Description

Technical Field

[0001] This utility model relates to the technical field of material mechanical property testing equipment, specifically a device for testing the mechanical properties of metallic materials. Background Technology

[0002] In the metal processing and quality inspection process, mechanical property testing of long and strip-shaped metal workpieces (such as bars, tubes, and profiles) is an indispensable procedure. A common testing method involves heating the metal material to a specific temperature and then applying pressure or impact loads to detect key mechanical properties such as the material's resistance to deformation and bending strength under hot conditions.

[0003] Currently, existing metal material mechanical property testing equipment has the following shortcomings in practical use: First, most equipment has a dispersed structure, with heating modules and pressure testing modules operating independently. Workpieces need to be transferred between different workstations, which is cumbersome and temperature drops affect test accuracy. Second, for long and narrow metal workpieces, there is a lack of effective support and limiting structures. After heating, the workpiece is prone to displacement and warping, leading to deviation of the pressure point and distortion of test results. Third, during the pressure test, the acquisition of the downward pressure value often relies on external force measuring equipment, which cannot achieve synchronous real-time feedback with the downward pressure action, making operation inconvenient and data consistency difficult to guarantee. Fourth, the clamping mechanism mostly uses bolt tightening, which has poor centering. Especially for long and narrow workpieces, displacement and warping are prone to occur during clamping, and the clamping force is difficult to control precisely. Excessive clamping can easily cause workpiece deformation, or insufficient clamping force can cause the workpiece to slip during the test, affecting test safety and data reliability.

[0004] Therefore, there is an urgent need for an integrated metal material mechanical property testing device that integrates heating, clamping, lifting and adjustment, pressure testing and real-time pressure detection to solve the problems of scattered testing process, unstable workpiece positioning, poor pressure detection synchronization, inconvenient clamping operation and insufficient reliability in the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide a mechanical property testing device for metallic materials, which has the advantages of high integration, stable workpiece positioning, real-time synchronous pressure detection, reliable clamping and convenient lifting and adjustment, thus solving the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A mechanical property testing device for metallic materials includes a support platform, a heating mechanism disposed on the upper part of the support platform, a clamping mechanism disposed on the upper part of the support platform, a pressing mechanism disposed on the upper part of the support platform and used to enhance the clamping force of the clamping mechanism on the long metal block, two sets of lifting mechanisms symmetrically disposed on both sides of the support platform, an L-shaped block fixedly connected to the lower part of one side of the support platform, a plurality of U-shaped support blocks fixedly connected to the upper part of the support platform, two sets of pressure detection mechanisms disposed on the upper part of the support platform, a pressing mechanism disposed above the support platform, and a controller. A through groove is provided in the middle of one side of the L-shaped block. The metal block to be tested is inserted into the through groove and placed in the U-shaped concave surface of each U-shaped support block. The lifting ends of the two sets of lifting mechanisms together support and limit the metal block, which is used to drive the metal block to adjust its height position in the vertical direction; The heating mechanism is sleeved on the outer periphery of the long metal block and is used for medium-frequency heating of the long metal block; The output end of the extrusion mechanism corresponds to the moving end of the clamping mechanism. The clamping mechanism is driven by the extrusion mechanism and is used to clamp and fix the side of the metal block. The pressing mechanism is located above the long metal block and is used to apply downward pressure to the heated long metal block to complete the mechanical property test; the pressing end of the pressing mechanism corresponds vertically to the detection end of the pressure detection mechanism, and the pressing mechanism acts synchronously on the pressure detection mechanism during the pressing operation to realize the real-time detection of the pressing pressure value; The controller is fixedly connected to the L-shaped block and is electrically connected to the heating mechanism, the extrusion mechanism, the pressure detection mechanism, the lifting mechanism, and the pressing mechanism.

[0007] Preferably, the heating mechanism includes multiple first support blocks fixedly connected to the upper end of the support platform. The upper ends of the multiple first support blocks are fixedly connected to a fixed cylinder. Multiple connecting blocks are fixedly connected to the inner wall of the fixed cylinder. Two fixed rings are fixedly connected to the ends of the multiple connecting blocks near the center of the fixed cylinder. An intermediate frequency induction coil is fixedly connected between the two fixed rings. The intermediate frequency induction coil is sleeved on the outer periphery of the metal block. The intermediate frequency induction coil is electrically connected to the controller.

[0008] Preferably, the clamping mechanism includes a second bearing block fixedly connected to the upper end of the bearing platform, a hinge seat fixedly connected to the upper end of the second bearing block, a first movable block hinged to the hinge seat, and a handle fixedly connected to the upper end of the first movable block; a guide rail fixedly connected to the upper end of the second bearing block, a slider slidably mounted on the guide rail, a moving block fixedly connected to the upper end of the slider, and a first limiting groove extending through the end of the moving block near the hinge seat; a second movable block hinged to the first movable block, and a first extrusion column hinged to the end of the second movable block away from the first movable block, the first extrusion column slidably mounted on the inner wall of the first limiting groove; a fixed block fixedly connected to the upper end of the second bearing block, and a second extrusion column fixedly connected to the end of the fixed block near the moving block, the second extrusion column and the first extrusion column being arranged radially opposite to each other along the metal block, and after the first extrusion column slides along the inner wall of the first limiting groove toward the direction of the second extrusion column, the ends of the first extrusion column and the second extrusion column approaching each other clamp and fix the two sides of the metal block.

[0009] It is worth noting that the clamping mechanism adopts a dual transmission chain design: on the one hand, the operator can manually drive the first movable block to rotate around the hinge seat via the handle, which in turn drives the first extrusion column to slide along the first limiting groove via the second movable block, quickly completing the initial clamping; on the other hand, the extrusion mechanism pushes the moving block to slide along the guide rail, causing the first extrusion column to move towards the second extrusion column, achieving force-increasing clamping. This clamping method, which combines manual coarse adjustment with electric force amplification, ensures both the flexibility and speed of the initial positioning of the workpiece, and the sufficient and stable clamping force during testing, effectively avoiding the problem of metal blocks slipping or deforming due to force.

[0010] Preferably, the extrusion mechanism includes a first electric cylinder fixedly connected to the upper end of the support platform, a second limiting groove extending through the upper end of the support platform, a first limiting block fixedly connected to the output shaft of the first electric cylinder, the first limiting block being slidably installed between the inner walls of the two sides of the second limiting groove, an extrusion block fixedly connected to the upper end of the first limiting block, the extrusion block and the moving block abutting each other at their respective close ends, and the first electric cylinder being electrically connected to the controller.

[0011] It is worth noting that the sliding fit between the first limiting block and the second limiting groove provides a stable linear motion guide for the extrusion block, ensuring that the extrusion block will not deflect or shake during the process of pushing the moving block; the first electric cylinder is precisely controlled by the controller, which can adjust the extrusion pressure and displacement stroke according to the metal long blocks of different specifications, so as to realize the adjustable control of the clamping force.

[0012] Preferably, the pressure testing mechanism includes two sets of test pieces symmetrically fixedly connected to the upper end of the support platform. Each set of test pieces includes a support plate fixedly connected to the upper end of the support platform. At least three arc-shaped blocks are fixedly connected to the upper end of the support plate. Each arc-shaped block is evenly arranged along the circumference of the support plate. A spring is fixedly connected to the center of the upper end of the support plate. A movable plate is fixedly connected to the upper end of the spring. A pressure sensor is fixedly connected to the upper end of the movable plate. The outer peripheral wall of the movable plate slides against the concave surface of each arc-shaped block. The pressure sensor is electrically connected to the controller.

[0013] It is worth noting that multiple arc-shaped blocks are evenly arranged around the circumference of the support plate, forming a circumferential limiting and guiding structure for the movable plate, ensuring that the movable plate only floats up and down in the vertical direction; the spring provides elastic restoring force for the movable plate, so that the pressure sensor automatically returns to its position after the downward pressure is released; the sliding contact relationship between the arc-shaped blocks and the movable plate avoids the swaying or jamming of the movable plate during the lifting process, ensuring the consistency and accuracy of the pressure detection signal.

[0014] Preferably, the lifting mechanism includes a fixed box fixedly connected to the side of the support platform, a second electric cylinder fixedly connected inside the fixed box, a first lifting block fixedly connected to the upper end of the output shaft of the second electric cylinder, two second limiting blocks fixedly connected to the upper end of the first lifting block, one end of the two second limiting blocks being close to each other and fitting against the two sides of the metal block for limiting, and the second electric cylinder being electrically connected to the controller.

[0015] It is worth noting that the two second limit blocks are set radially opposite to each other along the metal block, and they hug and limit the metal block from both sides. This can not only support the weight of the workpiece, but also prevent the workpiece from rolling or shifting radially. The two sets of lifting mechanisms are driven synchronously by the controller to ensure that the metal block always maintains a horizontal posture during the height adjustment process, and avoids workpiece tilting or jamming caused by asynchronous lifting at both ends.

[0016] Preferably, the pressing mechanism includes a bracket fixedly connected to the upper end of the support platform, a third electric cylinder fixedly connected to the top of the bracket, a second lifting block fixedly connected to the lower end of the output shaft of the third electric cylinder, a cutter for applying downward pressure to the metal block fixedly connected to the lower end of the second lifting block, and a fixed column fixedly connected to the lower end of the second lifting block. The fixed column corresponds vertically to the pressure sensor, and their central axes are collinear. The third electric cylinder is electrically connected to the controller.

[0017] It is worth noting that the cutter, as the force-applying component, can be replaced with pressure heads of different blade shapes according to the testing needs; the fixed column moves down synchronously during the pressing process and contacts the pressure sensor, realizing real-time and synchronous detection of the pressing force value, avoiding the measurement lag and error caused by the separate setting of the pressing mechanism and the force measuring mechanism in the traditional solution.

[0018] Preferably, there are two fixing posts, which are symmetrically distributed on both sides of the cutter and correspond one-to-one with the pressure sensors of the two sets of test pieces, and are collinear with the central axis.

[0019] Preferably, multiple U-shaped support blocks are arranged at equal intervals along the axial direction of the metal block, with the U-shaped concave opening of each U-shaped support block facing upwards, and the bottom surface of the metal block fitting against the inner wall of the U-shaped concave surface for support; the inner diameter of the through groove is larger than the outer diameter of the metal block, allowing the metal block to move freely along the axial direction.

[0020] It is worth noting that the through slot is opened on the L-shaped block as a channel for the long metal block to pass through. Its inner diameter is larger than the outer diameter of the workpiece, which facilitates the material passing operation and can also play an initial guiding role for the workpiece. The U-shaped support blocks are arranged at equal intervals to provide multiple support points for the long strip workpiece, avoid the workpiece from deflecting due to its own weight, and ensure the accuracy of the force application point position.

[0021] Preferably, the two sets of pressure detection mechanisms are symmetrically distributed on both sides of the pressing mechanism; the second electric cylinders of the two sets of lifting mechanisms are synchronously lifted and lowered by the controller, so as to drive the metal block to adjust its height position in the vertical direction.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model integrates the heating mechanism, clamping mechanism, extrusion mechanism, lifting mechanism, pressure detection mechanism and pressing mechanism on the support platform, which solves the problem of the heating module and pressure testing module being separate in the prior art and the workpiece needing to be transferred to multiple stations. It realizes the integrated continuous operation of heating-clamping-height adjustment-pressure application-force measurement, and improves testing efficiency and accuracy. 2. This utility model solves the problems of unstable positioning and easy displacement and warping of long strip metal workpieces in the prior art by setting a dual transmission chain of manual initial clamping and electric force-increasing clamping in the clamping mechanism, combined with the equal-interval support of the U-shaped support block and the lateral limit of the lifting mechanism. It ensures the stability of the workpiece posture and the accuracy of the force application point during the test. At the same time, the clamping method combining manual coarse adjustment and electric force-increasing takes into account both the flexibility of operation and the reliability of clamping. 3. By setting the fixed column of the pressing mechanism and the central axis of the pressure sensor to be collinear, this utility model realizes synchronous real-time feedback of the application of pressing force and the detection of pressure value, which solves the data lag problem caused by the separation of pressing and force measurement in the prior art and improves the consistency of test data. 4. This utility model centrally controls each electric actuator through a controller, and can set heating parameters, lifting height, clamping force and pressing stroke according to the testing requirements of metal blocks of different specifications. This solves the problems of scattered operation and inconvenient parameter adjustment in the prior art, and improves the automation level and ease of operation of the device. Attached Figure Description

[0023] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The diagram shown is a three-dimensional structural schematic of the lifting mechanism of this utility model. Figure 3 The diagram shown is a three-dimensional structural schematic of the pressing mechanism of this utility model; Figure 4 The diagram shown is a three-dimensional structural schematic of the heating mechanism of this utility model; Figure 5 The diagram shown is a three-dimensional structural schematic of the clamping mechanism of this utility model. Figure 6 The diagram shown is a three-dimensional structural schematic of the extrusion mechanism and clamping mechanism of this utility model. Figure 7 The diagram shown is a three-dimensional structural schematic of the support platform of this utility model; Figure 8 This utility model is shown. Figure 7 A magnified three-dimensional structural diagram of part A in the diagram.

[0024] Reference numerals: 1. Support platform; 2. Heating mechanism; 201. First support block; 202. Fixed cylinder; 203. Connecting block; 204. Fixed ring; 205. Intermediate frequency induction coil; 3. Clamping mechanism; 301. Second support block; 302. Hinge; 303. First movable block; 304. Handle; 305. Second movable block; 306. Guide rail; 307. Slider; 308. Moving block; 309. First extrusion column; 310. Fixed block; 311. Second extrusion column; 312. First limiting groove; 4. Extrusion mechanism; 401. First electric cylinder; 402. Second limiting groove. 403. Groove; 404. First limiting block; 405. Extrusion block; 5. Pressure detection mechanism; 501. Bearing plate; 502. Arc-shaped block; 503. Spring; 504. Movable plate; 505. Pressure sensor; 6. Lifting mechanism; 601. Fixed box; 602. Second electric cylinder; 603. First lifting block; 604. Second limiting block; 7. Pressing mechanism; 701. Bracket; 702. Third electric cylinder; 703. Second lifting block; 704. Cutter; 705. Fixed column; 8. L-shaped block; 9. Through groove; 10. Controller; 11. Metal long block; 12. U-shaped support block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To address the problems in existing technologies, such as separate heating and pressurizing equipment, unstable workpiece positioning, poor pressure detection synchronization, and insufficient clamping reliability, the following technical solution is proposed. Please refer to [link / reference needed]. Figures 1-8 ; A mechanical property testing device for metallic materials includes a support platform 1, a heating mechanism 2 disposed on the upper end of the support platform 1, a clamping mechanism 3 disposed on the upper end of the support platform 1, a pressing mechanism 4 disposed on the upper end of the support platform 1 and used to enhance the clamping force of the clamping mechanism 3 on the metal block 11, two sets of lifting mechanisms 6 symmetrically disposed on both sides of the support platform 1, an L-shaped block 8 fixedly connected to the lower part of one side of the support platform 1, a plurality of U-shaped support blocks 12 fixedly connected to the upper end of the support platform 1, two sets of pressure detection mechanisms 5 disposed on the upper end of the support platform 1, a pressing mechanism 7 disposed above the support platform 1, and a controller 10. The clamping mechanism 3 is located outside the area of ​​the two sets of lifting mechanisms 6 in the axial direction of the metal block 11; A through groove 9 is provided through the middle of one side of the L-shaped block 8. The metal long block 11 to be tested is inserted into the through groove 9 and placed in the U-shaped concave surface of each U-shaped support block 12. The lifting ends of the two sets of lifting mechanisms 6 together support and limit the metal block 11, which is used to drive the metal block 11 to adjust its height position in the vertical direction; Heating mechanism 2 is fitted around the outer periphery of metal block 11 and is used for medium-frequency heating of metal block 11; The output end of the extrusion mechanism 4 corresponds to the moving end of the clamping mechanism 3. The clamping mechanism 3 and the extrusion mechanism 4 are in a transmission cooperation to clamp and fix the side of the metal block 11. The pressing mechanism 7 is located above the metal block 11 and is used to apply downward pressure to the heated metal block 11 to complete the mechanical property test. The pressing end of the pressing mechanism 7 corresponds to the detection end of the pressure detection mechanism 5. When the pressing mechanism 7 is pressing down, it acts synchronously on the pressure detection mechanism 5 to realize the real-time detection of the pressing pressure value. The controller 10 is fixedly connected to the L-shaped block 8. The controller 10 is electrically connected to the heating mechanism 2, the extrusion mechanism 4, the pressure detection mechanism 5, the lifting mechanism 6, and the pressing mechanism 7 respectively.

[0027] In this embodiment, specifically, the heating mechanism 2 includes multiple first support blocks 201 fixedly connected to the upper end of the support platform 1. The upper ends of the multiple first support blocks 201 are fixedly connected to a fixed cylinder 202. Multiple connecting blocks 203 are fixedly connected to the inner wall of the fixed cylinder 202. Two fixed rings 204 are fixedly connected to one end of the multiple connecting blocks 203 near the center of the fixed cylinder 202. A medium frequency induction coil 205 is fixedly connected between the two fixed rings 204. The medium frequency induction coil 205 is sleeved on the outer periphery of the metal long block 11. The medium frequency induction coil 205 is electrically connected to the controller 10.

[0028] In this embodiment, specifically, the clamping mechanism 3 includes a second bearing block 301 fixedly connected to the upper end of the bearing platform 1. A hinge seat 302 is fixedly connected to the upper end of the second bearing block 301. A first movable block 303 is hinged to the hinge seat 302, and a handle 304 is fixedly connected to the upper end of the first movable block 303. A guide rail 306 is fixedly connected to the upper end of the second bearing block 301. A slider 307 is slidably mounted on the guide rail 306. A moving block 308 is fixedly connected to the upper end of the slider 307. A first limiting groove 312 is provided through the end of the moving block 308 near the hinge seat 302. A second movable block 305 is hinged to the first movable block 303. 05. A first extrusion column 309 is hinged to one end away from the first movable block 303. The first extrusion column 309 is slidably installed on the inner wall of the first limiting groove 312. A fixing block 310 is fixedly connected to the upper end of the second bearing block 301. A second extrusion column 311 is fixedly connected to one end of the fixing block 310 near the moving block 308. The second extrusion column 311 and the first extrusion column 309 are arranged radially opposite to each other along the metal long block 11. After the first extrusion column 309 slides along the inner wall of the first limiting groove 312 toward the direction of the second extrusion column 311, the ends of the first extrusion column 309 and the second extrusion column 311 that are close to each other clamp and fix the two sides of the metal long block 11.

[0029] In this embodiment, specifically, the extrusion mechanism 4 includes a first electric cylinder 401 fixedly connected to the upper end of the support platform 1. A second limiting groove 402 is provided through the upper end of the support platform 1. A first limiting block 403 is fixedly connected to the output shaft of the first electric cylinder 401. The first limiting block 403 is slidably installed between the inner walls of the two sides of the second limiting groove 402. An extrusion block 404 is fixedly connected to the upper end of the first limiting block 403. The extrusion block 404 and the moving block 308 are close to each other at one end. When the first electric cylinder 401 drives the extrusion block 404 to move, the extrusion block 404 pushes the moving block 308 to slide along the guide rail 306, so that the first extrusion column 309 slides towards the second extrusion column 311. The first electric cylinder 401 is electrically connected to the controller 10.

[0030] In this embodiment, specifically, the pressure detection mechanism 5 includes two sets of test pieces symmetrically and fixedly connected to the upper end of the support platform 1. Each set of test pieces includes a support plate 501 fixedly connected to the upper end of the support platform 1. At least three arc-shaped blocks 502 are fixedly connected to the upper end of the support plate 501. Each arc-shaped block 502 is evenly arranged along the circumference of the support plate 501. A spring 503 is fixedly connected to the center of the upper end of the support plate 501. A movable plate 504 is fixedly connected to the upper end of the spring 503. A pressure sensor 505 is fixedly connected to the upper end of the movable plate 504. The outer peripheral wall of the movable plate 504 slides and fits against the concave surface of each arc-shaped block 502. The pressure sensor 505 is electrically connected to the controller 10.

[0031] In this embodiment, specifically, the lifting mechanism 6 includes a fixed box 601 fixedly connected to the side of the support platform 1. A second electric cylinder 602 is fixedly connected inside the fixed box 601. A first lifting block 603 is fixedly connected to the upper end of the output shaft of the second electric cylinder 602. Two second limiting blocks 604 are fixedly connected to the upper end of the first lifting block 603. The ends of the two second limiting blocks 604 that are close to each other are fitted and limited to the two sides of the metal long block 11. The second electric cylinder 602 is electrically connected to the controller 10.

[0032] In this embodiment, specifically, the pressing mechanism 7 includes a bracket 701 fixedly connected to the upper end of the support platform 1. A third electric cylinder 702 is fixedly connected to the top of the bracket 701. A second lifting block 703 is fixedly connected to the lower end of the output shaft of the third electric cylinder 702. A cutter 704 for applying downward pressure to the metal block 11 is fixedly connected to the lower end of the second lifting block 703. A fixing column 705 is also fixedly connected to the lower end of the second lifting block 703. The fixing column 705 corresponds vertically to the pressure sensor 505, and their central axes are collinear. The third electric cylinder 702 is electrically connected to the controller 10.

[0033] In this embodiment, specifically, there are two fixing posts 705. The two fixing posts 705 are symmetrically distributed on both sides of the cutter 704, and correspond one-to-one with the pressure sensors 505 of the two sets of test pieces, and are collinear with the central axis.

[0034] In this embodiment, specifically, multiple U-shaped support blocks 12 are arranged at equal intervals along the axial direction of the metal long block 11, and the U-shaped concave opening of each U-shaped support block 12 is set facing upward, and the bottom surface of the metal long block 11 fits against the inner wall of the U-shaped concave surface to support it; the inner diameter of the through groove 9 is larger than the outer diameter of the metal long block 11, so that the metal long block 11 can move freely along the axial direction.

[0035] In this embodiment, specifically, two sets of pressure detection mechanisms 5 are symmetrically distributed on both sides of the pressing mechanism 7; the second electric cylinders 602 of the two sets of lifting mechanisms 6 are synchronously lifted and driven by the controller 10 to drive the metal block 11 to adjust its height position in the vertical direction.

[0036] Working principle: Before testing, the operator sets parameters such as heating temperature, holding time, pressing rate and test stroke through the controller 10. The end of the metal block 11 to be tested is passed through the through groove 9 on the L-shaped block 8, so that the metal block 11 is passed through the inner hole of the intermediate frequency induction coil 205 in sequence, and finally placed in the U-shaped concave surface of multiple sets of U-shaped support blocks 12. At the same time, the two ends of the metal block 11 are respectively placed between the two second limit blocks 604 of the two sets of lifting mechanisms, and the two second limit blocks 604 form a close fit limit on the two sides of the metal block 11. After the sample is positioned, the operator moves the handle 304, causing the first movable block 303 to rotate around the hinge seat 302. The second movable block 305 then drives the first extrusion column 309 to slide along the first limiting groove 312 toward the second extrusion column 311, so that the first extrusion column 309 and the second extrusion column 311 respectively fit against the two sides of the metal block 11, completing the rapid pre-clamping of the sample. Subsequently, the controller 10 starts the first electric cylinder 401, driving the first limiting block 403 to slide along the second limiting groove 402, causing the extrusion block 404 to push the moving block 308 to slide along the guide rail 306 toward the second extrusion column 311, further increasing the clamping force on the metal block 11 and completing the force-increasing locking. After clamping, the controller 10 controls the two sets of second electric cylinders 602 to lift and lower synchronously, adjusting the first test section of the metal block 11 to a position corresponding to the cutter 704. Then, the controller 10 starts the third electric cylinder 702, driving the second lifting block 703 to move the cutter 704 and the fixed column 705 downward synchronously. The cutter 704 contacts the upper surface of the metal block 11 and applies the first downward pressure, completing the mechanical performance test under normal temperature conditions and obtaining benchmark data. At the same time, the fixed column 705 synchronously contacts the pressure sensor 505 downward, and the pressure sensor 505 transmits the real-time force value data to the controller 10, realizing complete synchronization between the downward pressing action and the force value detection. After the first pressure test is completed, the third electric cylinder 702 drives the cutter 704 and the fixed column 705 to reset upwards. The spring 503 drives the movable plate 504 and the pressure sensor 505 to reset automatically. Then, the controller 10 controls the first electric cylinder 401 to move in the opposite direction to release the force-increasing lock. The operator pulls the handle 304 in the opposite direction to release the pre-clamping. The operator uses the material-pulling tool to push the metal block 11 to slide axially along the through groove 9 and the U-shaped concave surface of the U-shaped support block 12, moving the section to be heated on the metal block 11 into the inner hole of the medium frequency induction coil 205. The handle 304 is pulled again to complete the pre-clamping. The controller 10 starts the first electric cylinder 401 to increase the force and lock again. After clamping is completed, the controller 10 starts the intermediate frequency induction coil 205 to perform intermediate frequency induction heating on the section of the metal block 11 that is in the heating mechanism 2; after the temperature rises to the set value and is kept warm for a preset time, the heating is completed. Subsequently, the controller 10 controls the first electric cylinder 401 to move in the reverse direction to release the force-increasing lock. The operator pulls the handle 304 in the reverse direction to release the pre-clamping. The operator then uses the material-pulling tool to push the metal block 11 to slide axially, moving the heated section of the metal block 11 directly below the cutter 704. The controller 10 controls the two sets of second electric cylinders 602 to lift and lower synchronously, finely adjusting the height of the metal block 11 so that the heated section corresponds vertically with the cutter 704. The operator then pulls the handle 304 again to complete the pre-clamping. The controller 10 then activates the first electric cylinder 401 to increase the force and lock again. The controller 10 activates the third electric cylinder 702 to apply force for a second pressing test, in order to detect the deformation and mechanical property differences of the second test section of the metal block 11 under high temperature conditions, and compare and analyze it with the room temperature test data of the first test section. During the test, the arc-shaped block 502 forms a radial limit on the movable disk 504, ensuring that the movable disk 504 slides only in the vertical direction, thus ensuring that the pressure sensor 505 is subjected to uniform force and the detection data is accurate. After all tests are completed, the controller 10 controls the third electric cylinder 702 to reset, and the first electric cylinder 401 drives the extrusion block 404 to move in the opposite direction to release the force-increasing lock; the operator pulls the handle 304 in the opposite direction to drive the first extrusion column 309 to slide in the opposite direction, release the clamp on the metal block 11, and the tested sample can be taken out of the device to complete the entire test process.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A device for testing the mechanical properties of metallic materials, characterized in that, Includes a support platform (1), a heating mechanism (2) set on the upper end of the support platform (1), a clamping mechanism (3) set on the upper end of the support platform (1), a pressing mechanism (4) set on the upper end of the support platform (1) and used to enhance the clamping force of the clamping mechanism (3) on the metal block (11), two sets of lifting mechanisms (6) symmetrically set on both sides of the support platform (1), an L-shaped block (8) fixedly connected to the lower part of one side of the support platform (1), multiple U-shaped support blocks (12) fixedly connected to the upper end of the support platform (1), two sets of pressure detection mechanisms (5) set on the upper end of the support platform (1), a pressing mechanism (7) set on the upper part of the support platform (1), and a controller (10). A through groove (9) is provided through the middle of one side of the L-shaped block (8). The metal block (11) to be tested is inserted through the through groove (9) and placed in the U-shaped concave surface of each U-shaped support block (12). The lifting ends of the two sets of lifting mechanisms (6) together support and limit the metal block (11), which is used to drive the metal block (11) to adjust its height position in the vertical direction. The heating mechanism (2) is sleeved on the outer periphery of the metal block (11) and is used to perform medium frequency heating on the metal block (11). The output end of the extrusion mechanism (4) corresponds to the moving end of the clamping mechanism (3). The clamping mechanism (3) and the extrusion mechanism (4) are in a transmission cooperation to clamp and fix the side of the metal block (11). The pressing mechanism (7) is located above the metal block (11) and is used to apply downward pressure to the heated metal block (11) to complete the mechanical performance test. The pressing end of the pressing mechanism (7) corresponds to the detection end of the pressure detection mechanism (5). When the pressing mechanism (7) presses down, it acts synchronously on the pressure detection mechanism (5) to realize the real-time detection of the pressing pressure value. The controller (10) is fixedly connected to the L-shaped block (8). The controller (10) is electrically connected to the heating mechanism (2), the extrusion mechanism (4), the pressure detection mechanism (5), the lifting mechanism (6), and the pressing mechanism (7).

2. The testing device for the mechanical properties of metallic materials according to claim 1, characterized in that, The heating mechanism (2) includes multiple first support blocks (201) fixedly connected to the upper end of the support platform (1). The upper ends of the multiple first support blocks (201) are fixedly connected to a fixed cylinder (202). Multiple connecting blocks (203) are fixedly connected to the inner wall of the fixed cylinder (202). Two fixed rings (204) are fixedly connected to one end of the multiple connecting blocks (203) near the center of the fixed cylinder (202). A medium frequency induction coil (205) is fixedly connected between the two fixed rings (204). The medium frequency induction coil (205) is sleeved on the outer periphery of the metal long block (11). The medium frequency induction coil (205) is electrically connected to the controller (10).

3. The testing device for the mechanical properties of metallic materials according to claim 1, characterized in that, The clamping mechanism (3) includes a second bearing block (301) fixedly connected to the upper end of the bearing platform (1), a hinge seat (302) fixedly connected to the upper end of the second bearing block (301), a first movable block (303) hinged to the hinge seat (302), and a handle (304) fixedly connected to the upper end of the first movable block (303); a guide rail (306) fixedly connected to the upper end of the second bearing block (301), a slider (307) slidably mounted on the guide rail (306), a moving block (308) fixedly connected to the upper end of the slider (307), and a first limiting groove (312) penetrating the end of the moving block (308) near the hinge seat (302); a second movable block (305) hinged to the first movable block (303), and the second movable block (305) A first extrusion column (309) is hinged to one end away from the first movable block (303). The first extrusion column (309) is slidably installed on the inner wall of the first limiting groove (312). A fixed block (310) is fixedly connected to the upper end of the second bearing block (301). A second extrusion column (311) is fixedly connected to one end of the fixed block (310) near the movable block (308). The second extrusion column (311) and the first extrusion column (309) are arranged opposite each other along the radial direction of the metal block (11). After the first extrusion column (309) slides along the inner wall of the first limiting groove (312) towards the second extrusion column (311), the ends of the first extrusion column (309) and the second extrusion column (311) that are close to each other clamp and fix the two sides of the metal block (11).

4. The mechanical property testing device for metallic materials according to claim 3, characterized in that, The extrusion mechanism (4) includes a first electric cylinder (401) fixedly connected to the upper end of the support platform (1). The upper end of the support platform (1) is provided with a second limiting groove (402). A first limiting block (403) is fixedly connected to the output shaft of the first electric cylinder (401). The first limiting block (403) is slidably installed between the inner walls of the two sides of the second limiting groove (402). An extrusion block (404) is fixedly connected to the upper end of the first limiting block (403). The extrusion block (404) and the moving block (308) are close to each other at one end. When the first electric cylinder (401) drives the extrusion block (404) to move, the extrusion block (404) pushes the moving block (308) to slide along the guide rail (306), so that the first extrusion column (309) slides towards the second extrusion column (311). The first electric cylinder (401) is electrically connected to the controller (10).

5. The mechanical property testing device for metallic materials according to claim 1, characterized in that, The pressure testing mechanism (5) includes two sets of test pieces symmetrically fixedly connected to the upper end of the support platform (1). Each set of test pieces includes a support plate (501) fixedly connected to the upper end of the support platform (1). At least three arc blocks (502) are fixedly connected to the upper end of the support plate (501). Each arc block (502) is evenly arranged along the circumference of the support plate (501). A spring (503) is fixedly connected to the center of the upper end of the support plate (501). A movable plate (504) is fixedly connected to the upper end of the spring (503). A pressure sensor (505) is fixedly connected to the upper end of the movable plate (504). The outer peripheral wall of the movable plate (504) slides and fits against the concave surface of each arc block (502). The pressure sensor (505) is electrically connected to the controller (10).

6. The mechanical property testing device for metallic materials according to claim 1, characterized in that, The lifting mechanism (6) includes a fixed box (601) fixedly connected to the side of the support platform (1). A second electric cylinder (602) is fixedly connected inside the fixed box (601). A first lifting block (603) is fixedly connected to the upper end of the output shaft of the second electric cylinder (602). Two second limiting blocks (604) are fixedly connected to the upper end of the first lifting block (603). The two second limiting blocks (604) are close to each other and fit against the two sides of the metal long block (11) for limiting. The second electric cylinder (602) is electrically connected to the controller (10).

7. The mechanical property testing device for metallic materials according to claim 5, characterized in that, The pressing mechanism (7) includes a bracket (701) fixedly connected to the upper end of the support platform (1). A third electric cylinder (702) is fixedly connected to the top of the bracket (701). A second lifting block (703) is fixedly connected to the lower end of the output shaft of the third electric cylinder (702). A cutter (704) for applying downward pressure to the metal block (11) is fixedly connected to the lower end of the second lifting block (703). A fixed column (705) is also fixedly connected to the lower end of the second lifting block (703). The fixed column (705) corresponds vertically to the pressure sensor (505), and their central axes are collinear. The third electric cylinder (702) is electrically connected to the controller (10).

8. The mechanical property testing device for metallic materials according to claim 7, characterized in that, There are two fixed posts (705). The two fixed posts (705) are symmetrically distributed on both sides of the cutter (704) and correspond one-to-one with the pressure sensors (505) of the two sets of test pieces, with their central axes collinear.

9. The mechanical property testing device for metallic materials according to claim 1, characterized in that, Multiple U-shaped support blocks (12) are arranged at equal intervals along the axial direction of the metal block (11). The U-shaped concave opening of each U-shaped support block (12) faces upward. The bottom surface of the metal block (11) fits against the inner wall of the U-shaped concave surface to support it. The inner diameter of the through groove (9) is larger than the outer diameter of the metal block (11), allowing the metal block (11) to move freely along the axial direction.

10. The device for testing the mechanical properties of metallic materials according to claim 1, characterized in that, Two pressure detection mechanisms (5) are symmetrically distributed on both sides of the pressing mechanism (7); the second electric cylinders (602) of the two lifting mechanisms (6) are synchronously lifted and driven by the controller (10) to drive the metal block (11) to adjust its height position in the vertical direction.

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