Extrusion die wear test assembly and extrusion die wear test device

Abstract

The present invention relates to an extrusion die wear test assembly and an extrusion die wear test device. The extrusion die wear test assembly includes: a movable mounting seat, which can be driven by a power mechanism to perform reciprocating linear motion; at least one fixed mounting seat, including a base and a sliding seat; a friction block and a preformed material block are mounted on the sliding seat and the movable mounting seat; the moving path of the sliding seat intersects with the moving path of the movable mounting seat, and when in use, the friction block is in contact with the preformed material block, and with the movement of the movable mounting seat, the friction block and the preformed material block move relative to each other; an extrusion spring is also installed on the fixed mounting seat. With the movement of the movable mounting seat, the friction block and the preformed material block move relative to each other, simulating the movement of the die and the blank, and the extrusion spring is intermittently pushed, so that there is an extrusion force between the preformed material block and the friction block to simulate the pressure on the extrusion die, which is more in line with the actual working conditions of the extrusion die and the test results are more accurate.

Description

Technical Field

[0001] The invention relates to an extrusion die wear test component and an extrusion die wear test device. Background Art

[0002] According to the principle of extrusion mechanics, the flow direction of the metal billet is under a three-dimensional non-uniform compressive stress state during the extrusion process. During the extrusion process, the billet deforms and changes to a preset shape. During the billet change process, the billet metal flows and generates huge stress on the contact surface of the die, causing wear failure. Most existing test devices are pin-disc test models, which mainly test the continuous wear of metals under certain temperature and pressure, which is inconsistent with the actual working conditions of intermittent wear of extrusion dies. Summary of the invention

[0003] The purpose of the present invention is to provide an extrusion die wear test assembly to solve the problem that the wear test device in the prior art cannot well simulate the state of the extrusion die in the actual working process; the purpose of the present invention is also to provide an extrusion die wear test device to solve the problem that the wear test device in the prior art cannot well simulate the state of the extrusion die in the actual working process.

[0004] To achieve the above object, the technical solution of the extrusion die wear test assembly of the present invention is:

[0005] The extrusion die wear test assembly includes: a movable mounting seat, which is used to be connected to a power mechanism and can be driven by the power mechanism to perform reciprocating linear motion; at least one fixed mounting seat, including a base and a sliding seat guided and movable on the base; a friction block; the friction block and the preformed material block are respectively mounted on the sliding seat and the movable mounting seat; the moving path of the sliding seat intersects with the moving path of the movable mounting seat, and the friction block is brought into contact with the preformed material block when in use, and as the movable mounting seat moves, the friction block and the preformed material block push each other and move relative to each other; the fixed mounting seat is also provided with an extrusion spring that provides elastic force to the sliding seat, so that the preformed material block and the friction block are squeezed against each other when in use.

[0006] The beneficial effects of the extrusion die wear test assembly of the present invention are as follows: the extrusion die wear test assembly of the present invention moves the friction block or the preformed material block through the mobile mounting seat. With the movement of the mobile mounting seat, the friction block and the preformed material block move relative to each other, simulating the relative movement of the die and the blank in the actual extrusion process; the preformed material block and the friction block are pressed together by the elastic member on the fixed mounting seat to simulate the stress generated by the contact surface of the die when the blank metal flows during the extrusion process. When the mobile mounting seat is performing reciprocating linear motion, the mobile mounting seat intermittently squeezes the spring through the push between the friction block and the preformed material block, so that there is a constantly changing extrusion force between the preformed material block and the friction block to simulate the pressure on the extrusion die, which is more in line with the actual working conditions of the extrusion die, and the test results are more accurate. And compared with the method of testing by setting up a complete mold for actual production, the present invention only needs to set up a preformed material block, which is more economical and environmentally friendly, and the testing process is also simpler and more efficient.

[0007] Furthermore, a pressure sensor is arranged in series on the force transmission path of the extrusion spring, and the pressure sensor is used to detect the mutually changing extrusion force between the friction block and the preformed material block and transmit the information to the computer for recording. The pressure sensor is used to obtain accurate test data during the test process, so as to facilitate subsequent data analysis.

[0008] Furthermore, a force transmission rod is connected to the sliding seat, the extension direction of the force transmission rod is consistent with the moving direction of the sliding seat, a spring box is arranged on the base, the extrusion spring is installed in the spring box, and the pressure sensor is connected in series between the force transmission rod and the extrusion spring. The pressure sensor is arranged at the end of the force transmission rod, which is more convenient to install.

[0009] Furthermore, a spring guide rod is movably mounted on the spring box along the moving direction of the sliding seat, and a spring seat is provided at the end of the spring guide rod close to the sliding seat. One end of the pressure sensor is connected to the force transmission rod, and the other end is connected to the spring seat. The provision of the spring guide rod and the spring seat can limit the spring to prevent the spring from bouncing or falling, and the pressure sensor can effectively measure the change in the extrusion force on the preformed material block during the extrusion process.

[0010] Furthermore, the dowel rod is a heat-insulating dowel rod, which is heat-insulated to reduce the influence of high temperature on the spring and provide a more stable and reliable pressure.

[0011] Furthermore, the sliding direction of the sliding seat is arranged perpendicular to the moving direction of the friction block. The sliding seat and the moving direction of the friction block are arranged perpendicularly, which is easier to install, and the elastic force of the spring is the pressure between the two, which is convenient for data processing.

[0012] Furthermore, the extrusion die wear test assembly further comprises a heating device, which is used to heat the friction block and / or the preformed material block. By heating the friction block and / or the preformed material block through the heating device, the test assembly can simulate a hot extrusion process.

[0013] Furthermore, the heating device includes a heating coil, which is fixedly arranged relative to the base, and the friction block or preformed material block fixed on the movable mounting seat can pass through the heating coil when moving along its moving path. It is more convenient to use the heating coil to heat the friction block or preformed material block on the movable mounting seat, and the movement interference of the friction block and the preformed material block is small.

[0014] Furthermore, the extrusion die wear test assembly further includes a temperature sensor, which is used to detect the temperature of the friction block and / or the preformed material block heated by the heating coil. The temperature sensor can detect the exact temperature of the friction block and / or the preformed material block, thereby improving the accuracy of the test result.

[0015] To achieve the above object, the technical solution of the extrusion die wear test device of the present invention is:

[0016] The extrusion die wear test device comprises a hydraulic press and an extrusion die wear test assembly, wherein the extrusion die wear test assembly comprises: a movable mounting seat, which is used to be connected to a power mechanism and can be driven by the power mechanism to perform reciprocating linear motion; at least one fixed mounting seat, which comprises a base and a sliding seat guided and movable and mounted on the base; a friction block; the friction block and the preformed material block are respectively mounted on the sliding seat and the movable mounting seat; the moving path of the sliding seat intersects with the moving path of the movable mounting seat, and the friction block is brought into contact with the preformed material block during use, and as the movable mounting seat moves, the friction block and the preformed material block push each other and move relative to each other; the fixed mounting seat is also provided with an extrusion spring which provides elastic force to the sliding seat, so that the preformed material block and the friction block are squeezed against each other during use; the movable mounting seat in the extrusion die wear test assembly is fixed to the output end of the hydraulic press to realize reciprocating linear motion, and the fixed mounting seat is fixed to the workbench of the hydraulic press.

[0017] The beneficial effects of the extrusion die wear test device of the present invention are as follows: the extrusion die wear test assembly of the present invention moves the friction block or the preformed material block through the mobile mounting seat. With the movement of the mobile mounting seat, the friction block and the preformed material block move relative to each other, simulating the relative movement of the die and the blank in the real extrusion process; the preformed material block and the friction block are pressed together by the elastic member on the fixed mounting seat to simulate the stress generated by the contact surface of the die when the blank metal flows during the extrusion process. After the mobile mounting seat performs reciprocating linear motion, the mobile mounting seat intermittently squeezes the spring through the push between the friction block and the preformed material block, so that there is a constantly changing extrusion force between the preformed material block and the friction block to simulate the pressure on the extrusion die, which is more in line with the actual working conditions of the extrusion die, and the test results are more accurate. And compared with the method of testing by setting up a complete mold for actual production, the present invention only needs to set up a preformed material block, which is more economical and environmentally friendly, and the testing process is also simpler and more efficient.

[0018] Furthermore, a pressure sensor is arranged in series on the force transmission path of the extrusion spring, and the pressure sensor is used to detect the mutual extrusion force between the friction block and the preformed material block and transmit the information to the computer for recording. The pressure sensor is used to obtain accurate test data during the test process, so as to facilitate subsequent data analysis.

[0019] Furthermore, a force transmission rod is connected to the sliding seat, the extension direction of the force transmission rod is consistent with the moving direction of the sliding seat, a spring box is arranged on the base, the extrusion spring is installed in the spring box, and the pressure sensor is connected in series between the force transmission rod and the extrusion spring. The pressure sensor is arranged at the end of the force transmission rod, which is more convenient to install.

[0020] Furthermore, a spring guide rod is movably mounted on the spring box along the moving direction of the sliding seat, and a spring seat is provided at the end of the spring guide rod close to the sliding seat. One end of the pressure sensor is connected to the force transmission rod, and the other end is connected to the spring seat. The provision of the spring guide rod and the spring seat can limit the spring to prevent the spring from bouncing or falling, and the pressure sensor can effectively measure the change in the extrusion force on the preformed material block during the extrusion process.

[0021] Furthermore, the dowel rod is a heat-insulating dowel rod, which is heat-insulated to reduce the influence of high temperature on the spring and provide a more stable and reliable pressure.

[0022] Furthermore, the sliding direction of the sliding seat is arranged perpendicular to the moving direction of the friction block. The sliding seat and the moving direction of the friction block are arranged perpendicularly, which is easier to install, and the elastic force of the spring is the pressure between the two, which is convenient for data processing.

[0023] Furthermore, the extrusion die wear test assembly further comprises a heating device, which is used to heat the friction block and / or the preformed material block. By heating the friction block and / or the preformed material block through the heating device, the test assembly can simulate a hot extrusion process.

[0024] Furthermore, the heating device includes a heating coil, which is fixedly arranged relative to the base, and the friction block or preformed material block fixed on the movable mounting seat can pass through the heating coil when moving along its moving path. It is more convenient to use the heating coil to heat the friction block or preformed material block on the movable mounting seat, and the movement interference of the friction block and the preformed material block is small.

[0025] Furthermore, the extrusion die wear test assembly further includes a temperature sensor, which is used to detect the temperature of the friction block and / or the preformed material block heated by the heating coil. The temperature sensor can detect the exact temperature of the friction block and / or the preformed material block, thereby improving the accuracy of the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a specific embodiment of the extrusion die wear test device of the present invention;

[0027] Figure 2 It is a front view of a specific embodiment of the extrusion die wear testing device of the present invention;

[0028] Figure 3 A top view of a fixed mounting seat portion in a specific embodiment of the extrusion die wear test device of the present invention;

[0029] Figure 4 It is a schematic structural diagram of a preformed material block in a specific embodiment of the extrusion die wear test device of the present invention;

[0030] Figure 5 It is a structural schematic diagram of a sliding seat in a specific embodiment of the extrusion die wear test device of the present invention;

[0031] Figure 6 A schematic diagram of another embodiment of the extrusion die wear testing device of the present invention;

[0032] Explanation of the reference numerals: 1-insulating pad; 2-fixed frame; 3-heating coil; 4-sliding seat; 5-spring box; 6-spring guide rod; 7-baffle; 8-force transmission rod; 9-guide rail; 10-preformed material block; 11-friction block; 12-pressure sensor; 13-spring; 14-temperature sensor; 15-L-shaped groove; 16-rib; 17-computer; 18-infrared probe; 19-hydraulic press output end. DETAILED DESCRIPTION

[0033] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0034] The specific embodiment of the extrusion die wear test device of the present invention is as follows Figure 1 and Figure 2 As shown, the extrusion die wear test device of the present invention comprises a hydraulic press and an extrusion die wear test assembly, wherein the extrusion die wear test assembly comprises a movable mounting seat and a fixed mounting seat, the fixed mounting seat is provided with a preformed material block 10 for simulating the wear condition of the extrusion die, and the movable mounting seat is provided with a friction block 11 for rubbing the fixed mounting seat. It should be noted that the hydraulic press can be an existing conventional hydraulic press, Figure 1 and Figure 2 The hydraulic press frame and the hydraulic press workbench are not shown in the figure. The fixed mounting seat is installed on the workbench of the hydraulic press, and the movable mounting seat is installed on the output end 19 of the hydraulic press.

[0035] Specific as Figure 1 and Figure 2 As shown, the movable mounting seat includes a thermal insulation pad 1 and a fixing frame 2. The thermal insulation pad 1 is made of thermal insulation material and is in the shape of a disc. The fixing frame 2 is composed of an upper and lower part, the upper part is also in the shape of a disc, and the lower part is a square cylinder, and the square cylinder has a step structure at one end away from the thermal insulation pad 1. The friction block 11 is also a square cylinder, and the upper end of the friction block 11 corresponds to the step structure on the fixing frame 2, and can be docked and assembled with the fixing frame 2, and fixed by bolts. The step surface of the step structure can ensure the verticality of the friction block 11 relative to the ground. The lower end of the friction block 11 is a wedge-shaped structure with two opposite inclined surfaces. The wedge-shaped structure is used to push the preformed material block 10 to one side of the friction block 11, and rub against the friction block 11 through the inclined surface. The angle between the two inclined surfaces is 60°.

[0036] like Figure 2As shown, the fixed mounting seat includes a base and a sliding seat 4, and the base includes a horizontally arranged guide rail 9 and an L-shaped baffle 7, and the guide rail 9 and the baffle 7 are installed on the workbench by bolts. A groove matching with the guide rail 9 is arranged at the bottom end of the sliding seat 4, and the sliding seat 4 is assembled on the guide rail 9 by sliding and guiding in the groove. The sliding seat 4 is provided with a preformed material block fixing structure on one side of its sliding direction, specifically an L-shaped groove 15 extending horizontally and perpendicular to the sliding direction of the sliding seat 4, and a threaded hole extending up and down and connected with the L-shaped groove 15. The preformed material block 10 is a wedge-shaped structure with a narrow top and a wide bottom, and a slope is arranged on the side facing away from the sliding seat 4, and the acute angle between the slope and the ground is 60°, which matches with the slope on the friction block 11 when in contact. The upper and lower sides of the slope on the preformed material block 10 and the friction block 11 are transitioned with other surfaces through rounded corners, so that the friction block 11 and the preformed material block 10 can move smoothly relative to each other. An L-shaped rib 16 is provided on the side of the preformed material block 10 facing the sliding seat 4, corresponding to the fixing structure of the preformed material block. A threaded hole is also provided on the L-shaped rib 16. The sliding seat 4 and the preformed material block 10 are assembled together and then fixed by bolts. In this embodiment, the friction block moves in a straight line up and down, and the sliding seat slides horizontally on the guide rail. The movement trajectories of the two intersect vertically. In other embodiments, the friction block can also make a straight reciprocating motion in the horizontal direction, and the sliding seat can slide in the vertical direction; or the friction block can move in a straight line up and down, and the sliding direction of the sliding seat has a certain angle with the horizontal plane. A force transmission rod 8 is also inserted on the side of the sliding seat 4 facing away from the preformed material block 10.

[0037] like Figure 3 As shown, the baffle 7 includes a vertical side and a horizontal side. The horizontal side is provided with a fixing hole for fixing with the workbench by bolts. The vertical side is provided with a vertical surface facing the slider. The vertical side is provided with a through hole for the force transmission rod 8 to pass through. The baffle 7 is also provided with a U-shaped spring box 5. The spring box 5 includes two parallel sides and a connecting side located between the two parallel sides. The ends of the two parallel sides of the spring box 5 are provided with connecting ears. The connecting ears are provided with fixing holes. The bolts pass through the fixing holes and are fixed to the vertical surface of the baffle 7. The opening of the spring box 5 is directly opposite to the through hole on the baffle 7 for the force transmission rod 8 to pass through. The U-shaped groove of the spring box 5 is equipped with a spring 13 and a spring seat. A spring guide rod 6 extends from the spring seat. The spring guide rod 6 passes through the connecting side of the spring box 5 to guide and slide with the spring box 5. The spring 13 is compressed between the spring seat and the connecting side of the spring box 5. The spring guide rod 6 can prevent the spring 13 from falling or popping out of the spring box 5.

[0038] In order to obtain the precise value of the extrusion force between the friction block 11 and the preformed material block 10 during the test, a pressure sensor 12 is also provided on the fixed mounting seat. In this embodiment, the pressure sensor 12 is provided between the force transmission rod 8 and the spring seat, and is fixed to the force transmission rod 8. The elastic force of the spring 13 is transmitted to the preformed material block 10 through the pressure sensor 12, the force transmission rod 8 and the sliding seat 4. In this way, when the spring 13 is compressed, the elastic force provided by the spring 13, that is, the extrusion force between the friction block 11 and the preformed material block 10 can be accurately measured. In other embodiments, the pressure sensor may not be provided, and the elastic force of the spring applied can be roughly estimated only by the spring elastic coefficient and the compression amount. In other embodiments, the spring box may also be a square cylinder, the spring is installed in the cylinder, the pressure sensor is fixed at one end of the force transmission rod away from the moving seat, the spring is pressed between the pressure sensor and the bottom wall of the spring box, and the spring box is fixed to the baffle through the connecting ear.

[0039] The extrusion die wear test device also includes a coil heating device for heating the friction block 11. The coil heating device includes a device body (not shown) and a heating coil 3 suspended from the device body. The heating coil 3 is arranged at the position before the friction block 11 moves and surrounds the outside of the friction block 11. At the same time, the extrusion die wear test device is also equipped with a temperature sensor 14 for detecting the temperature of the friction block 11 before the action. The temperature sensor 14 is specifically an infrared temperature sensor 14. In other embodiments, the heating coil can also heat the preformed material block. The heating coil is arranged beside the inclined surface of the preformed material block near the spring position to prevent the heating coil from interfering with the movement of the friction block. When heating, the sliding seat is first moved to the inclined surface of the preformed material block in the heating coil for heating. The temperature sensor measures the inclined surface part. After heating, the sliding seat is restored to the original position for testing. The sliding seat can be positioned by a positioning pin fixed on the guide rail. In other embodiments, the temperature of the friction block can also be roughly controlled by controlling the heating time of the heating coil. The infrared temperature sensor in this embodiment is a non-contact sensor. In other embodiments, the temperature sensor may also be a contact sensor. The contact sensor is fixed on the friction block. For example, a mounting groove is provided on the friction block, and the contact temperature sensor is inserted into the mounting groove. In other embodiments, a heating rod may be used to heat the friction block. For example, a heating groove parallel to the inclined surface is provided on the friction block, and the heating rod is inserted into the heating groove to heat the friction block. Of course, when performing a wear test simulating cold extrusion, the heating device may not be provided.

[0040] The extrusion die wear device also includes a computer 17, and the temperature sensor 14, the hydraulic press, and the electromagnetic heating device are connected to the computer 17. After the test is started, the coil heating device is first turned on to heat the friction block 11, and the temperature sensor 14 transmits the detected temperature information of the friction block 11 to the computer 17. When the temperature of the friction block 11 reaches the set value, the control host of the computer 17 controls the electromagnetic heating device to stop heating and controls the hydraulic press to drive the friction block 11 to start linear reciprocating motion in the vertical direction. During the downward movement of the friction block 11, the inclined surface of the friction block 11 contacts the inclined surface of the preformed material block 10, and as the friction block 11 continues to move, the preformed material block 10 is gradually pushed to one side of the friction block 11. During the movement of the friction block 11, relative displacement occurs between the preformed material block 10 and the friction block 11, and at the same time, the spring 13 is compressed, and pressure is generated between the preformed material block 10 and the friction block 11, simulating the actual extrusion process of the mold. After that, the hydraulic press moves upward, and the friction block 11 and the preformed material block 10 return to their initial positions, completing a test process. The test process is then repeated to simulate the actual extrusion process of the die.

[0041] The pressure sensor 12 and the temperature sensor 14 are connected to the computer 17. The pressure sensor 12 transmits the pressure data to the computer 17. The control host 17 then summarizes and plots the temperature, pressure and other data in the form of a time axis. After the friction and wear test, the preformed material block 10 is removed, and the mass lost by the preformed material block 10 during the test, as well as the morphology and microstructure of the worn surface and other information are analyzed to obtain the wear of the preformed material block 10 under different temperatures and pressures. The temperature sensor in this embodiment only obtains the temperature data of the friction block when it is in the initial position. In other embodiments, a contact temperature sensor can also be used to follow the friction block to continuously detect the temperature of the friction block, or an infrared sensor can be continuously aimed at the friction block to continuously detect the temperature of the friction block.

[0042] In other embodiments, Figure 6 As shown, an infrared counter can also be added to count the number of tests. The infrared probe 18 in the infrared counter is set on one side of the friction block. When the friction block reciprocates once, the counter counts once and records the number of times the friction block and the preformed material block are squeezed, thereby monitoring the changing rules of the mold during the working process and predicting the mold failure time. In other embodiments, when the counter is not set, the number of times the friction block and the preformed material block are squeezed can also be roughly estimated based on the total time spent on the test and the time of a single test process. In other embodiments, a cooling device can also be added to simulate the real production environment of the factory. The cooling device can specifically be a spray device, which sprays to cool when the friction block contacts the preformed material block. Of course, an air cooling device can also be used to cool by blowing air.

[0043] In other embodiments, two fixed mounting seats may be relatively arranged, and two tests may be performed simultaneously for reference to each other to obtain more accurate test results, or the elastic coefficients of the springs of the two fixed mounting seats may be different to obtain test results under different pressures; or when the heating coil heats the preformed material block, the two preformed material blocks may be heated to different temperatures to obtain test results at different temperatures.

[0044] A specific embodiment of the extrusion die wear test assembly of the present invention, the structure of the extrusion die wear test assembly in this embodiment is the same as the structure of the extrusion die wear test assembly in the embodiment of the above-mentioned extrusion die wear test device, the extrusion die wear test assembly is installed on other power mechanisms, such as an electric press, to achieve linear reciprocating motion, and the specific structure of the extrusion die wear test assembly is not repeated here.

Claims

1. An extrusion die intermittent wear test assembly, characterized in that: include: The mobile mounting seat is used to connect with the power mechanism and can be driven by the power mechanism to perform reciprocating linear motion; At least one fixed mounting seat, including a base and a sliding seat guided and movable on the base; The friction block is mounted on the movable mounting seat, and the lower end of the friction block is a wedge-shaped structure with two opposite inclined surfaces, and the wedge-shaped structure is used to push the preformed material block to one side of the friction block; The preformed material is installed on the sliding seat. The preformed material is a wedge-shaped structure that is narrow at the top and wide at the bottom. A slope is provided on the side facing away from the sliding seat, and cooperates with the slope on the friction block when in contact. The moving path of the sliding seat intersects with the moving path of the movable mounting seat, and when in use, the friction block contacts the preformed material block. With the movement of the movable mounting seat, the friction block and the preformed material block push each other and move relative to each other. The fixed mounting seat is also provided with an extrusion spring which provides elastic force to the sliding seat so that the preformed material block and the friction block are pressed against each other during use; When the movable mounting seat performs reciprocating linear motion, the movable mounting seat intermittently squeezes the spring by pushing between the friction block and the preformed material block, so that there is a constantly changing extrusion force between the preformed material block and the friction block to simulate the pressure on the extrusion die.

2. The extrusion die intermittent wear test assembly according to claim 1, characterized in that: A pressure sensor is arranged in series on the force transmission path of the extrusion spring, and the pressure sensor is used to detect the mutual extrusion force between the friction block and the preformed material and transmit the information to a computer for recording.

3. The extrusion die intermittent wear test assembly according to claim 2, characterized in that: The sliding seat is connected with a force transmission rod, the extension direction of the force transmission rod is consistent with the moving direction of the sliding seat, the base is provided with a spring box, the extrusion spring is installed in the spring box, and the pressure sensor is connected in series between the force transmission rod and the extrusion spring.

4. The extrusion die intermittent wear test assembly according to claim 3, characterized in that: A spring guide rod is movably mounted on the spring box along the moving direction of the sliding seat. A spring seat is arranged at the end of the spring guide rod close to the sliding seat. One end of the pressure sensor is connected to the force transmission rod, and the other end is connected to the spring seat.

5. The extrusion die intermittent wear test assembly according to claim 3 or 4, characterized in that: The force transmission rod is a heat-insulating force transmission rod.

6. The extrusion die intermittent wear test assembly according to any one of claims 1 to 4, characterized in that: The sliding direction of the sliding seat is arranged perpendicular to the moving direction of the friction block.

7. The extrusion die intermittent wear test assembly according to any one of claims 1 to 4, characterized in that: The extrusion die intermittent wear test assembly further comprises a heating device, which is used to heat the friction block and / or the preformed material block.

8. The extrusion die intermittent wear test assembly according to claim 7, characterized in that: The heating device comprises a heating coil, which is fixedly arranged relative to the base. The friction block or the preformed material block fixed on the movable mounting seat can pass through the heating coil when moving along its moving path.

9. The extrusion die intermittent wear test assembly according to claim 8, characterized in that: The extrusion die wear test assembly further comprises a temperature sensor, and the temperature sensor is used to detect the temperature of the friction block and / or the preformed material block heated by the heating coil.

10. An extrusion die intermittent wear test device, characterized in that: It comprises a hydraulic press and an extrusion die intermittent wear test assembly, wherein the extrusion die intermittent wear test assembly is the extrusion die intermittent wear test assembly as described in any one of claims 1 to 9 above, wherein a movable mounting seat in the extrusion die intermittent wear test assembly is fixed at the output end of the hydraulic press to realize reciprocating linear motion, and a fixed mounting seat is fixed on the workbench of the hydraulic press.

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