A thermal conductivity testing device for aluminum-silicon alloy ingots

Abstract

The present invention relates to the technical field of thermal conductivity testing, and discloses a thermal conductivity testing device for aluminum-silicon alloy ingots, comprising a device body, a display screen, an operation panel, and a testing cabin arranged on the front of the device body, a door arranged in front of the testing cabin, an equipment cabin arranged on the back of the device body, a power device arranged inside the equipment cabin, and a pushing assembly and a testing plate arranged inside the testing cabin. The thermal conductivity testing device for aluminum-silicon alloy ingots is provided with a plurality of top pressure blocks and connecting rods between a base and a top pressure plate. When working, the pressure on the top pressure plate can be made more uniform, and the possibility of deformation of the top pressure plate can be reduced. At the same time, this can protect the test plate squeezed by the top pressure plate. The top pressure plate that has not been deformed can evenly transfer the pressure to the test plate to avoid deformation of the test plate, thereby improving the accuracy of the detection and extending the service life of the top pressure plate and the test plate.

Description

Technical Field

[0001] The invention relates to the technical field of thermal conductivity testing, and in particular to a thermal conductivity testing device for aluminum-silicon alloy ingots. Background Art

[0002] Aluminum-silicon alloy ingot is a metal material composed of aluminum and silicon as main components. The addition of silicon in aluminum-silicon alloy can significantly improve the fluidity and casting performance of the alloy. Silicon can lower the melting point of the alloy, reduce the tendency of thermal cracking, and make the ingot easier to form. Aluminum-silicon alloy is mostly used in the automotive manufacturing field, aerospace field, and electronic and electrical field. Whether it is used to manufacture engine cylinder blocks, cylinder heads, pistons and other parts, or to manufacture fuselage frames, wing skins, etc., there are certain requirements for heat dissipation. Therefore, thermal conductivity is an important indicator of aluminum-silicon alloy production testing. Whenever a new production formula or production process is implemented, the product needs to be tested to observe its thermal conductivity and compare it with the current product.

[0003] When testing the thermal conductivity of aluminum-silicon alloy ingots, the steady-state method is often used. Specifically, standard samples with known thermal conductivity and silicon alloy ingot samples to be tested are sandwiched between two flat plates in batches to form a sandwich structure. A heating device and a temperature sensor are set on the flat plates to transfer heat from the hot plate to the cold plate through the sample. The thermal conductivity of the sample is calculated according to the formula by measuring the heat flow on the heat flow sensor, the thickness of the sample, and the temperature gradient on both sides of the sample.

[0004] The prior art has the following defects:

[0005] During the test, the hot plate and the cold plate need to clamp the sample so that the hot plate and the cold plate can affect the temperature of the sample. In this process, the power equipment that pushes the hot plate and the cold plate is mostly a hydraulic rod. The contact area between the power equipment and the hot plate and the cold plate is only a small area. Therefore, when the power equipment presses the hot plate or the cold plate to the surface of the sample, the hot plate and the cold plate are locally stressed. In this way, the hot plate and the cold plate may be deformed due to uneven force for a long time, and the deformed hot plate and the cold plate can no longer fit the sample completely, resulting in the energy transfer between the hot and cold plates and the sample being affected, causing errors in the test results. Summary of the invention

[0006] In view of the problem in the prior art that the hot plate and the cold plate are deformed due to uneven force, a thermal conductivity testing device for aluminum-silicon alloy ingots is proposed.

[0007] The present application provides a thermal conductivity testing device for aluminum-silicon alloy ingots, the purpose of which is to make the hot plate and the cold plate be subjected to uniform force.

[0008] The technical scheme of the present invention is: a thermal conductivity testing device for aluminum-silicon alloy ingots, used for detecting the thermal conductivity of alloy samples, comprising a device body, a display screen, an operation panel, and a test cabin arranged on the front of the device body, a hatch arranged in front of the test cabin, an equipment cabin arranged on the back of the device body, a power device arranged inside the equipment cabin, a pushing assembly and a testing plate arranged inside the test cabin, wherein the pushing assembly comprises a base arranged inside the test cabin, a piston hole opened on the surface of the base, a connecting cavity opened inside the base, a fixed cover plate covering the surface of the base, a piston rod arranged inside the piston hole, a connecting head arranged at an end of the piston rod away from the base, a connecting rod arranged at an end of the connecting head away from the piston rod, a top pressure block arranged at an end of the connecting rod away from the connecting head, a top pressure plate arranged at an end of the top pressure block away from the connecting rod, a connecting hole opened on the surface of the top pressure plate close to the top pressure block, and fixing bolts sequentially penetrated through the connecting rod, the top pressure block, and the inside of the connecting hole;

[0009] The pushing components are distributed on both sides of the alloy sample, the piston holes are distributed in a rectangular array on the surface of the base, the connecting cavity is connected to all the piston holes, and the top pressure blocks are distributed in a rectangular array on the surface of the top pressure plate.

[0010] The test plate is adhered to a side of the top pressing plate away from the top pressing block by means of sticky silicone grease.

[0011] Furthermore, the coverage rate of the top pressure block on the top pressure plate is not less than 95%.

[0012] Furthermore, the top pressure block is divided into two parts, one part is square-shaped and fits with the top pressure plate, and the other part is quadrangular pyramid-shaped, and the bottom surface of the quadrangular pyramid-shaped part of the top pressure block is connected to the square part of the top pressure block, and the top of the quadrangular pyramid-shaped part of the top pressure block is connected to the connecting rod.

[0013] Furthermore, the area of ​​the end of the connecting rod away from the pressing block is not less than one quarter of the area of ​​the end of the pressing block away from the connecting rod.

[0014] Further, the test chamber includes an inner chamber opened inside the device body, a front operation port opened on the front of the device body, and a rear operation port opened on the inner wall of the equipment chamber;

[0015] The rear operating port and the front operating port are both connected to the inner cabin, the rear operating port is distributed on both sides of the inner cabin, and the overall thickness of the pushing component is the same as the opening width of the rear operating port.

[0016] Furthermore, the power equipment includes an oil tank arranged inside the equipment cabin, a delivery pipe arranged on the top of the oil tank, an interface opened on a side of the base close to the equipment cabin, and a threaded connection sleeve arranged on the outside of the delivery pipe;

[0017] The end of the delivery pipe away from the oil tank adopts a bifurcated design and is respectively connected to two bases.

[0018] Furthermore, a closing component is provided at the rear operation port, and the closing component specifically includes an outer frame provided at the outer side of the inner cabin opening, an embedded groove provided inside the inner cabin, a threaded hole provided on the inner wall of the embedded groove, a fixing screw provided inside the threaded hole, a threaded fixing sleeve provided outside the fixing screw, a closing plate provided inside the embedded groove, and a bayonet provided on one end of the closing plate close to the fixing screw;

[0019] The end of the closing plate away from the fixing screw is rotatably connected to the inside of the embedded groove, the fixing screw is clamped in the bayonet, the closing plate is made of heat-insulating material, and the pushing component is arranged in the rear operating port.

[0020] Furthermore, the inner wall of the inner chamber and the surface of the closing plate are both provided with mounting grooves, the mounting grooves are located at the center of the inner chamber, and the alloy sample is mounted in the mounting grooves.

[0021] Beneficial effects of the present invention:

[0022] 1. By arranging multiple top pressure blocks and connecting rods between the base and the top pressure plate, when working, the power provided by the power equipment is dispersed by the base to multiple top pressure blocks and connecting rods, and the top pressure blocks and connecting rods then evenly disperse this force to the surface of the top pressure plate, so that the pressure on the top pressure plate can be more uniform, reducing the possibility of deformation of the top pressure plate. At the same time, it can protect the test plate squeezed by the top pressure plate. The undeformed top pressure plate can evenly transfer the pressure to the test plate to avoid deformation of the test plate, thereby improving the accuracy of the detection and extending the service life of the top pressure plate and the test plate.

[0023] 2. Through the shape design of the top pressure block, the force transmitted by the connecting rod is evenly diffused by the top pressure block. In this way, without affecting the uniform force, the number of components such as the top pressure block, the connecting rod, the piston rod, etc. is reduced, which is conducive to reducing equipment costs.

[0024] 3. By setting up a test cabin with multiple openings, the push component can be installed from the rear operation port, the sample and test board can be installed at the front operation port, and the test work is carried out in the inner cabin. In this way, the loading and unloading process becomes simple, which is convenient for the later inspection and maintenance of the equipment.

[0025] 4. Hydraulic oil is delivered to the base through the same delivery pipe to provide pressure, so that the two connecting cavities are connected and the pressure inside the connecting cavities is the same. This ensures that the pressure applied on both sides of the sample is the same, which is beneficial to improve the accuracy of the detection.

[0026] 5. By setting up the closing assembly, the closing plate closes the front operating port, and the top pressure plate separates the rear operating port, so that the inner cabin becomes a closed air, reducing the external interference to the test plate and the sample during the test, thereby improving the accuracy of the test results. At the same time, the design of the fixing screw and the threaded fixing sleeve also facilitates the fixation of the closing plate, so that it has a better sealing effect on the front operating port. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a thermal conductivity testing device for aluminum-silicon alloy ingots according to the present invention;

[0028] Figure 2 This is a schematic diagram of the hatch and the closing plate of the present invention in an open state;

[0029] Figure 3 It is a front schematic diagram of the main body of the device of the present invention;

[0030] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0031] Figure 5 It is a schematic diagram of the closure assembly of the present invention;

[0032] Figure 6 This is a disassembled diagram of the closure assembly of the present invention;

[0033] Figure 7 It is a schematic diagram of the interior of the equipment cabin of the present invention;

[0034] Figure 8 This is a schematic diagram of the test chamber of the present invention;

[0035] Fig. 9 This is a disassembled diagram of the push assembly of the present invention;

[0036] Fig.10 This is a disassembled view of the other side of the push assembly of the present invention;

[0037] Fig.11 It is a schematic diagram of the piston rod, the connector, the connecting rod and the top pressure block of the present invention;

[0038] Fig.12 This is a disassembled diagram of the piston rod, connector, connecting rod, and top pressure block of the present invention;

[0039] Fig.13 It is the front view of the present invention;

[0040] Fig.14 For the present invention Fig.13 Sectional view at AA;

[0041] Fig.15 For the present invention Fig.14 Enlarged view of the push component in the middle;

[0042] Fig.16 For the present invention Fig.15 Select the enlarged part in the middle box.

[0043] In the figure:

[0044] 1. Device body; 2. Display screen; 3. Operation panel; 4. Test cabin; 41. Inner cabin; 42. Rear operation port; 43. Front operation port; 44. Mounting slot; 5. Hatch door; 6. Equipment cabin; 7. Power equipment; 71. Fuel tank; 72. Delivery pipe; 73. Interface; 74. Threaded connection sleeve; 8. Push assembly; 81. Base; 82. Piston hole; 83. Connecting cavity; 84. Fixed cover plate; 85. Piston rod; 86. Connecting head; 87. Connecting rod; 88. Pressing block; 89. Pressing plate; 810. Connecting hole; 811. Fixing bolt; 9. Test board; 10. Closing assembly; 101. Outer frame; 102. Embedded groove; 103. Threaded hole; 104. Fixing screw; 105. Threaded fixing sleeve; 106. Closing plate; 107. Bayonet. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0046] Example 1, reference Figure 1-16 , which is the first embodiment of the present invention, provides an aluminum-silicon alloy ingot thermal conductivity testing device for detecting the thermal conductivity of an alloy sample, comprising a device body 1, a display screen 2, an operation panel 3, a test chamber 4, a hatch 5, an equipment chamber 6, a power device 7, a push assembly 8, and a test plate 9 arranged inside the test chamber 4, wherein the push assembly 8 comprises a base 81 arranged inside the test chamber 4, a piston hole 82 arranged on the surface of the base 81, and a piston hole 82 arranged inside the base 81. The connecting cavity 83 of the part, the fixed cover plate 84 covering the surface of the base 81, the piston rod 85 arranged inside the piston hole 82, the connecting head 86 arranged at the end of the piston rod 85 away from the base 81, the connecting rod 87 arranged at the end of the connecting head 86 away from the piston rod 85, the pressing block 88 arranged at the end of the connecting rod 87 away from the connecting head 86, the pressing plate 89 arranged at the end of the pressing block 88 away from the connecting rod 87, the connecting hole 810 opened on the surface of the pressing plate 89 on one side close to the pressing block 88, and the fixing bolts 811 successively penetrated through the connecting rod 87, the pressing block 88 and the connecting hole 810.

[0047] Specifically, the display screen 2 and the operation panel 3 are located on the right side of the device body 1, and the test chamber 4 is located on the left side of the device body 1. The pushing components 8 are distributed on both sides of the alloy sample. The base 81 extends into the equipment chamber 6 and is fixed to the inner wall of the equipment chamber 6 by bolts. The piston holes 82 are distributed in a rectangular array on the surface of the base 81. The connecting cavity 83 connects all the piston holes 82. The surface of the fixed cover plate 84 is provided with holes corresponding to the piston holes 82. The fixed cover plate 84 is installed on the surface of the base 81 by screws. The piston rod 85 is slidably inserted in the connecting cavity 83. The piston rod 85 is divided into a rod part and a piston part. The diameter of the piston part is larger than the diameter of the rod part. The diameter of the main part of the piston hole 82 is the same as the diameter of the piston part of the piston rod 85. The opening diameter of the piston hole 82 near the connecting cavity 83 is the same as the rod diameter of the piston rod 85. The diameter of the hole on the surface of the fixed cover plate 84 is the same as the rod diameter of the piston rod 85. This restricts the piston rod 85 in the piston hole 82, and slots are provided at both ends of the connecting head 86. The piston rod 85 is inserted into the slot at one end of the connecting head 86, and bolts are inserted from the slot at the other end to fix the connecting head 86 and the piston rod 85. The connecting rod 87 is inserted into the slot at one end of the connecting head 86, and bolts are inserted from the outside of the connecting head 86 to fix the connecting head 86 and the connecting rod 87. The top pressure block 88 is integrally formed with the connecting rod 87, and the fixing bolt 811 penetrates the connecting rod 87 and the top pressure block 88 from the side of the connecting rod 87 away from the top pressure block 88 and enters the connecting hole 810. The top pressure blocks 88 are distributed in a rectangular array on the surface of the top pressure plate 89. The test plate 9 is adhered to the side of the top pressure plate 89 away from the top pressure block 88 by sticky silicone grease, so that the test plate 9 and the top pressure plate 89 fit more closely, and at the same time, the test plate 9 can also move synchronously with the top pressure plate 89. One of the test plates 9 is a heating plate and the other is a cooling plate.

[0048] By arranging a plurality of pressing blocks 88 and connecting rods 87 between the base 81 and the pressing plate 89, during operation, the power provided by the power device 7 is dispersed by the base 81 to the plurality of pressing blocks 88 and connecting rods 87, and the pressing blocks 88 and connecting rods 87 then evenly disperse the force to the surface of the pressing plate 89, so that the pressure on the pressing plate 89 can be more uniform, reducing the possibility of deformation of the pressing plate 89. At the same time, this can protect the test plate 9 squeezed by the pressing plate 89, and the non-deformed pressing plate 89 can evenly transfer the pressure to the test plate 9 to avoid deformation of the test plate 9, thereby improving the accuracy of the detection and extending the service life of the pressing plate 89 and the test plate 9.

[0049] Specifically, the coverage rate of the top pressure block 88 on the top pressure plate 89 is not less than 95%. Thus, the higher the coverage rate of the top pressure block 88 on the top pressure plate 89, the larger the area over which the pressure transmitted by the power equipment 7 is dispersed, thereby making the force on the top pressure plate 89 more uniform.

[0050] Specifically, the top pressure block 88 is divided into two parts, one part is in the shape of a square block and fits with the top pressure plate 89, and the other part is in the shape of a quadrangular pyramid. The bottom surface of the quadrangular pyramid part of the top pressure block 88 is connected to the square part of the top pressure block 88, and the top of the quadrangular pyramid part of the top pressure block 88 is connected to the connecting rod 87; the area of ​​the connecting rod 87 away from the end of the top pressure block 88 is not less than one quarter of the area of ​​the top pressure block 88 away from the end of the connecting rod 87.

[0051] Through the shape design of the top pressure block 88, the force transmitted by the connecting rod 87 is evenly diffused by the top pressure block 88. In this way, the number of components such as the top pressure block 88, the connecting rod 87, and the piston rod 85 is reduced without affecting the uniform force, which is beneficial to reducing equipment costs.

[0052] The test chamber 4 includes an inner chamber 41 opened inside the device body 1 , a front operation port 43 opened on the front of the device body 1 , and a rear operation port 42 opened on the inner wall of the equipment chamber 6 .

[0053] Specifically, the rear operating port 42 and the front operating port 43 are both connected to the inner cabin 41, the top pressure plate 89 and the inner cabin 41 have the same cross-sectional area and shape in the front-to-back direction, the rear operating port 42 is distributed on both sides of the inner cabin 41, and the overall thickness of the pushing assembly 8 is the same as the opening width of the rear operating port 42.

[0054] By setting up a test chamber 4 with multiple openings, the push assembly 8 can be installed from the rear operating port 42, the sample and test plate 9 can be installed at the front operating port 43, and the test work is carried out in the inner chamber 41. In this way, the loading and unloading process becomes simple, which is convenient for the later inspection and maintenance of the equipment.

[0055] The power equipment 7 includes an oil tank 71 arranged inside the equipment cabin 6, a delivery pipe 72 arranged on the top of the oil tank 71, an interface 73 opened on the side of the base 81 close to the equipment cabin 6, and a threaded connection sleeve 74 arranged on the outside of the delivery pipe 72.

[0056] Specifically, the end of the delivery pipe 72 away from the oil tank 71 adopts a forked design, which is respectively connected to the two bases 81, the delivery pipe 72 is inserted into the interface 73, the interface 73 is connected to the connecting cavity 83, the threaded connecting sleeve 74 is rotatably connected to the two ends of the fork of the delivery pipe 72, the threaded connecting sleeve 74 is threadedly connected to the interface 73, the delivery pipe 72 is fixedly connected to the oil tank 71, an oil pump connected to the delivery pipe 72 is installed inside the oil tank 71, and the oil tank 71 is filled with hydraulic oil.

[0057] The hydraulic oil is delivered to the base 81 through the same delivery pipe 72 to provide pressure, so that the two connecting cavities 83 are connected to each other and the internal pressure of the connecting cavities 83 is the same. This ensures that the pressure applied on both sides of the sample is the same, which is beneficial to improving the accuracy of the detection.

[0058] Example 2, reference Figure 1-6 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that a closing component 10 is provided at the rear operation port 42, and the closing component 10 specifically includes an outer frame 101 arranged on the outer side of the opening of the inner cabin 41, an embedded groove 102 opened in the inner cabin 41, a threaded hole 103 opened on the inner wall of the embedded groove 102, a fixing screw 104 arranged in the threaded hole 103, a threaded fixing sleeve 105 arranged on the outer side of the fixing screw 104, a closing plate 106 arranged in the embedded groove 102, and a bayonet 107 opened on one end of the closing plate 106 close to the fixing screw 104.

[0059] Specifically, the outer frame 101 is welded to the surface of the device body 1, the hatch 5 is rotatably installed on the outer frame 101, the threaded hole 103 is located above the inside of the embedded groove 102, and threads are provided at both ends of the fixing screw 104. The fixing screw 104 is threadedly connected to the threaded hole 103, and the end of the closing plate 106 away from the fixing screw 104 is rotatably connected to the inside of the embedded groove 102. The fixing screw 104 is clamped in the bayonet 107. The closing plate 106 is made of thermal insulation material, and the pushing assembly 8 is arranged in the rear operating port 42.

[0060] By setting up the closing component 10, the closing plate 106 closes the front operating port 43, and the top pressure plate 89 isolates the rear operating port 42, so that the inner chamber 41 becomes a closed air, reducing the external interference to the test plate 9 and the sample during the test, thereby improving the accuracy of the test result. At the same time, the design of the fixing screw 104 and the threaded fixing sleeve 105 also facilitates the fixation of the closing plate 106, so that its sealing effect on the front operating port 43 is better.

[0061] Specifically, the inner wall of the inner chamber 41 and the surface of the closing plate 106 are both provided with a mounting groove 44, and the mounting groove 44 is located at the center of the inner chamber 41. The alloy sample is mounted in the mounting groove 44 to avoid misalignment of the alloy sample when squeezed.

[0062] Based on Examples 1-2, the working principle of the thermal conductivity testing device for aluminum-silicon alloy ingots of the present invention is as follows:

[0063] During installation: first place the base 81 horizontally on the assembly table, keep the piston hole 82 facing upward, then insert the piston part of the piston rod 85 into the piston hole 82 one by one, and after all the outer walls are inserted, buckle the fixed cover plate 84 on the surface of the base 81, so that the piston rod 85 passes through the hole on the surface of the fixed cover plate 84, and then fix the fixed cover plate 84 with screws; put the connecting head 86 on the end of the piston rod 85 extending out of the piston hole 82 and fix it with bolts; place the top pressure plate 89 horizontally on the assembly table, keep the connecting hole 810 facing upward, and lay the top pressure blocks 88 one by one on the top pressure plate 89 so that it corresponds to the connecting hole 810 one by one, and then insert the fixing bolt 811 from one end of the connecting rod 87 to make it penetrate into the connecting hole 810, and fix the top pressure block 88 on the surface of the top pressure plate 89. After completing the installation of these two parts, stand up the base 81 and the top pressure plate 89, align the connecting rod 87 with the connecting head 86, slowly insert it, and then fix it with bolts to complete the assembly of the pushing component 8, insert the two ends of the fork of the delivery pipe 72 into the interface 73 respectively, and then tighten the fixing cover 84 to fix it, and connect the other end of the delivery pipe 72 to the oil tank 71.

[0064] Push the top pressure plate 89 to make it close to the base 81 until its movement is restricted, insert the assembled pushing component 8 from the equipment compartment 6 into the rear operating port 42, then evenly apply silicone grease on the surface of the test plate 9, send it into the inner compartment 41 from the front operating port 43, and fit it on the surface of the top pressure plate 89, finally insert the sample into the mounting groove 44 from the front operating port 43.

[0065] The fixing screw 104 is screwed into the threaded hole 103, and then the threaded fixing sleeve 105 is sleeved on the outer side of the fixing screw 104, and the outer side is completely assembled.

[0066] During operation: the sample is cut into a square block of 40 cm, and then the sample is inserted into the mounting groove 44, and then the threaded fixing sleeve 105 is rotated to move it on the fixing screw 104. When the threaded fixing sleeve 105 moves out of the flipping path of the closing plate 106, the closing plate 106 is flipped upward to be embedded in the embedded groove 102, and the bayonet 107 is snapped onto the outside of the fixing screw 104. Then, the threaded fixing sleeve 105 is rotated in the opposite direction to move the threaded fixing sleeve 105 on the fixing screw 104. The threaded fixing sleeve 105 continues to approach the closing plate 106 until it is pressed, and then the hatch 5 is closed.

[0067] Start the oil pump, and the hydraulic oil in the oil tank 71 is continuously delivered to the connecting chamber 83 through the delivery pipe 72. The pressure in the connecting chamber 83 increases, pushing the piston rod 85 in the piston hole 82 outward, and the piston rod 85 pushes the connecting rod 87 through the connector 86. The connecting rod 87 transmits the force to the pressing block 88, and the pressing block 88 evenly transmits the force to the surface of the pressing plate 89. The pressing plate 89 drives the test plate 9 to approach the sample until the test plate 9 presses on the surface of the sample, and the test plate 9 on the other side also moves synchronously.

[0068] After both sides of the test plates 9 are in contact with the sample, the test plates 9 start to work, one side of the test plates 9 starts to heat up, and the other side of the test plates 9 starts to cool down, and then the temperature changes of the samples are monitored and the data are recorded according to the work manual. After the test is completed, the oil pump slowly draws out the hydraulic oil in the connecting cavity 83 through the delivery pipe 72, so that the top pressure plate 89 gradually moves away from the sample, and then the inner cabin 41 continues to be kept closed, and the temperature of the test plates 9 is controlled to return to normal temperature at a rate of one degree per minute, which allows the test plates 9 to slowly recover their temperature. At the same time, by separating the two test plates 9 with a large temperature difference and recovering the temperature in a stable environment, deformation of the test plates 9 due to uneven stress release can be avoided.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A thermal conductivity testing device for aluminum-silicon alloy ingots, used for testing the thermal conductivity of alloy samples, comprising a device body (1), a display screen (2) arranged on the front of the device body (1), an operation panel (3), a testing chamber (4), a door (5) arranged in front of the testing chamber (4), an equipment chamber (6) arranged on the back of the device body (1), a power device (7) arranged inside the equipment chamber (6), a pushing assembly (8) and a testing plate (9) arranged inside the testing chamber (4), characterized in that: The pushing assembly (8) comprises a base (81) arranged inside the test chamber (4), a piston hole (82) opened on the surface of the base (81), a connecting cavity (83) opened inside the base (81), a fixed cover plate (84) covering the surface of the base (81), a piston rod (85) arranged inside the piston hole (82), a connecting head (86) arranged at an end of the piston rod (85) away from the base (81), a connecting rod (87) arranged at an end of the connecting head (86) away from the piston rod (85), a pressing block (88) arranged at an end of the connecting rod (87) away from the connecting head (86), a pressing plate (89) arranged at an end of the pressing block (88) away from the connecting rod (87), a connecting hole (810) opened on the surface of the pressing plate (89) on one side close to the pressing block (88), and a fixing bolt (811) successively penetrated through the connecting rod (87), the pressing block (88), and the inside of the connecting hole (810); The pushing components (8) are distributed on both sides of the alloy sample, the piston holes (82) are distributed in a rectangular array on the surface of the base (81), the connecting cavity (83) is connected to all the piston holes (82), and the top pressure blocks (88) are distributed in a rectangular array on the surface of the top pressure plate (89).

2. The thermal conductivity testing device for aluminum-silicon alloy ingots according to claim 1 is characterized in that: The test plate (9) is adhered to a side of the top pressure plate (89) away from the top pressure block (88) by means of adhesive silicone grease.

3. The thermal conductivity testing device for aluminum-silicon alloy ingots according to claim 2 is characterized in that: The coverage rate of the top pressing block (88) on the top pressing plate (89) is not less than 95%.

4. The thermal conductivity testing device for aluminum-silicon alloy ingots according to claim 3 is characterized in that: The top pressure block (88) is divided into two parts, one part is in the shape of a square block and fits with the top pressure plate (89), and the other part is in the shape of a quadrangular pyramid, and the bottom surface of the quadrangular pyramid part of the top pressure block (88) is connected to the square part of the top pressure block (88), and the top end of the quadrangular pyramid part of the top pressure block (88) is connected to the connecting rod (87).

5. The thermal conductivity testing device for aluminum-silicon alloy ingots according to claim 4, characterized in that: The area of ​​the end of the connecting rod (87) away from the pressing block (88) is not less than one quarter of the area of ​​the end of the pressing block (88) away from the connecting rod (87).

6. The thermal conductivity testing device for aluminum-silicon alloy ingots according to claim 5, characterized in that: The test chamber (4) comprises an inner chamber (41) opened inside the device body (1), a front operation port (43) opened on the front of the device body (1), and a rear operation port (42) opened on the inner wall of the equipment chamber (6); The rear operating port (42) and the front operating port (43) are both in communication with the inner chamber (41); the rear operating port (42) is distributed on both sides of the inner chamber (41); and the overall thickness of the pushing assembly (8) is the same as the opening width of the rear operating port (42).

7. The thermal conductivity testing device for aluminum-silicon alloy ingots according to claim 6, characterized in that: The power equipment (7) comprises an oil tank (71) arranged inside the equipment cabin (6), a delivery pipe (72) arranged on the top of the oil tank (71), an interface (73) opened on a side of the base (81) close to the equipment cabin (6), and a threaded connection sleeve (74) arranged on the outside of the delivery pipe (72); The end of the delivery pipe (72) away from the oil tank (71) adopts a bifurcated design and is respectively connected to two bases (81).

8. The thermal conductivity testing device for aluminum-silicon alloy ingots according to claim 7, characterized in that: A closing component (10) is provided at the rear operation port (42), and the closing component (10) specifically comprises an outer frame (101) provided at the outer side of the opening of the inner chamber (41), an embedded groove (102) provided inside the inner chamber (41), a threaded hole (103) provided on the inner wall of the embedded groove (102), a fixing screw (104) provided inside the threaded hole (103), a threaded fixing sleeve (105) provided outside the fixing screw (104), a closing plate (106) provided inside the embedded groove (102), and a bayonet (107) provided on one end of the closing plate (106) close to the fixing screw (104); One end of the closing plate (106) away from the fixing screw (104) is rotatably connected to the inside of the embedded groove (102), the fixing screw (104) is snap-fitted into the snap-fit ​​(107), the closing plate (106) is made of a heat-insulating material, and the pushing assembly (8) is arranged in the rear operating port (42).

9. The thermal conductivity testing device for aluminum-silicon alloy ingots according to claim 8, characterized in that: The inner wall of the inner chamber (41) and the surface of the closing plate (106) are both provided with a mounting groove (44), the mounting groove (44) is located at the center of the inner chamber (41), and the alloy sample is mounted in the mounting groove (44).

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