Method for reducing deformation of ceramic core and sagger

Abstract

The invention discloses a sagger capable of reducing deformation of a ceramic core, which comprises a container main body composed of a bottom plate and at least two rotatable side plates, and the side plates are rotatably connected with the bottom plate; one side of the plate-shaped radiating fin is in vertical contact with the bottom plate, and at least one of the two rotatable side plates is in contact with the plate-shaped radiating fin. The invention also discloses a method for reducing the deformation of the ceramic core. The method comprises the following steps: laying the bottom filler on the container bottom plate; placing products to be sintered and inserting plate-shaped radiating fins between the adjacent products to be sintered; covering the top filler, locking the side plate, sintering and cooling; after sintering is completed, the cooling fins are removed, the side plates are unlocked, the filler is exposed, and the product is taken out. The detachable sagger is combined with the plate-shaped cooling fins, so that the problems that a product is heated unevenly and coring is difficult during sintering of a traditional sagger are solved, and the beneficial effects that the production efficiency is improved, and the sintering qualification rate and the coring qualification rate are increased are achieved.

Description

Technical Field

[0001] The invention relates to the field of ceramic core production and manufacturing, and in particular to a method for reducing deformation of a ceramic core and a sagger. Background Art

[0002] In the field of ceramic core production, sintering process is the key link to determine product quality. At present, the sintering of ceramic products generally adopts the method of sagger filling and burning. The traditional sagger is usually a rectangular structure without a cover (such as Figure 1 The process is as follows: filler is placed in the sagger, the green blank to be sintered is buried in the filler, and then placed in the sintering furnace for heating and cooling. However, the existing technology has the following significant defects:

[0003] Uneven heating leads to quality problems: During the sintering process, all six sides of the traditional sagger are heated, resulting in uneven temperature distribution of products at different positions in the sagger (such as Figure 1 When multiple products are placed in the same sagger, the sintering degree of each product varies significantly, which can easily lead to defects such as deformation and cracking, resulting in a low dimensional qualification rate.

[0004] Low production efficiency: Due to the limited heat conduction efficiency of the filler, the heating and cooling speeds of the traditional process are slow, resulting in longer production cycles and increased energy consumption.

[0005] Coring is difficult and has high loss: After sintering, the filler tightly wraps the core, and the core must be removed by spreading the filler or turning over the sagger. The operation is cumbersome and can easily cause the core to break. The core removal pass rate is low and time-consuming.

[0006] Therefore, solving the technical problems of uneven heating, low production efficiency, and difficulty in core extraction during traditional sagger sintering has become a key area of improvement in the field of ceramic core manufacturing. This invention, through the innovative design of a detachable sagger and plate-shaped heat sinks, aims to significantly improve the sintering quality and production efficiency of ceramic cores.

[0007] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0008] The main purpose of the present invention is to solve the technical problems of uneven heating of products and difficulty in coring during traditional sagger sintering.

[0009] The present invention provides a sagger, comprising:

[0010] The container body is composed of a bottom plate (11) and at least two rotatable side plates (12), wherein the side plates (12) are rotatably connected to the bottom plate (11);

[0011] At least one plate-shaped heat sink (2), one side of the plate-shaped heat sink (2) is in vertical contact with the bottom plate (11), and at least one of the two rotatable side plates (12) is in contact with the plate-shaped heat sink.

[0012] Preferably, the sagger further comprises a locking structure (14), wherein the locking structure (14) is fixed at a connection point between adjacent side plates (12), and the locking structure (14) is used to fix the adjacent side plates (12).

[0013] Preferably, the locking structure (14) includes a rigid refractory material rod, and corresponding blocks (15) are provided at the connection between the adjacent side panels (12), and a slot is formed between the adjacent blocks (15). The blocks (15) on the adjacent side panels (12) are adapted to the shape of the slot, and a hole is opened on the block (15). The holes of the block (15) on any side panel (12) are located on the same straight line, and the rigid refractory material rod is used to pass through the holes on the adjacent side panels (12) to lock the adjacent side panels (12).

[0014] Preferably, the rigid refractory material rod is a corundum rod.

[0015] Preferably, a first distance between two edges of the plate-shaped heat sink (2) in contact with the side plate (12) is 92-98% of a second distance between opposite side plates (12) in the sagger.

[0016] Preferably, the surface of the plate-shaped heat sink (2) is provided with strip-shaped ribs (4), and the cross-sectional shape of the strip-shaped ribs (4) is trapezoidal or rectangular.

[0017] The present invention also provides a method for reducing deformation of a ceramic core using any of the above saggers, comprising the following steps:

[0018] After locking the side panels (12), the bottom filler is laid on the container bottom panel (11);

[0019] Placing products to be sintered and inserting plate-shaped heat sinks (2) between adjacent products to be sintered;

[0020] Cover with top layer of filler, sinter and cool;

[0021] After sintering is completed, the plate-shaped heat sink (2) is removed and the side plate (12) is unlocked to expose the filler for taking out the product.

[0022] Preferably, the step of covering the top layer of filler comprises:

[0023] Cover the top layer of the product with filler and compact the filler at the same time.

[0024] Preferably, the step of exposing the filler includes:

[0025] After the side panels (12) are lowered, use an air gun to blow the filler loose to expedite removal.

[0026] The present invention combines a detachable sagger with a plate-shaped heat sink, thereby solving the problems of uneven heating of products and difficulty in coring during sintering in a traditional sagger, and achieving the beneficial effects of improving production efficiency, sintering qualification rate and coring qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the traditional sagger structure described in the background of the present invention;

[0029] Figure 2 Schematic diagram of the expanded structure of a sagger side plate for reducing deformation of a ceramic core according to an embodiment of the present invention;

[0030] Figure 3 The figure is a schematic structural diagram of a sagger side plate combination for reducing deformation of a ceramic core according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] To better understand the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0032] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] The present invention provides a sagger, referring to Figure 2 In one embodiment, the sagger includes: a container body, consisting of a bottom plate 11 and at least two rotatable side plates 12, 13, wherein the side plates 12, 13 are rotatably connected to the bottom plate 11; at least one plate-shaped heat sink 2, one side of the plate-shaped heat sink 2 is in vertical contact with the bottom plate 11, and at least one of the two rotatable side plates 12, 13 is in contact with the plate-shaped heat sink.

[0036] Specifically, the side panels 12 and 13 are connected to the bottom plate 11 through a hinge mechanism and can rotate freely between a horizontally expanded state and a vertically closed state. The side panels 1 and 3 are fixedly connected to the bottom plate 11. During loading, the side panels 12 and 13 are expanded outward to form an open operating space; before sintering, the side panels 12 and 13 are flipped inward to a vertical position, forming a closed cavity together with the bottom plate 11. The plate-like heat sink 2 is vertically inserted between adjacent ceramic core blanks, which can conduct external heat to the filler to achieve the function of heat dissipation, while using its large surface area to accelerate the internal hot air circulation. After the side panels 12 and 13 are closed, they are fixed by a locking structure to ensure the structural stability of the cavity at high temperatures.

[0037] In this embodiment, the sintering quality and efficiency of the ceramic core are significantly improved through the coordinated design of the rotatable side plates and the plate-shaped heat sinks: 1) The addition of the heat sinks can increase the heating of the filler side, control the temperature difference inside the sagger, and reduce the product deformation rate; 2) The heat sinks enhance the heat transfer characteristics, thereby increasing the heating rate, shortening the cooling time, and reducing energy consumption, thereby achieving the advantages of high precision, high reliability, and energy saving.

[0038] In one embodiment, referring to Figure 2 and Figure 3 The sagger includes: a container body, consisting of a bottom plate 11 and at least two rotatable side plates 12 and 13, and the side plates 12 and 13 are rotatably connected to the bottom plate 11; at least one plate-like heat sink 2, one side of the plate-like heat sink 2 is in vertical contact with the bottom plate 11, and at least one of the two rotatable side plates 12 and 13 is in contact with the plate-like heat sink. The sagger also includes a locking structure 14, and the locking structure 14 is used to fix adjacent side plates 1 and 12, 3 and 13.

[0039] Specifically, the side panels 12 and 13 are connected to the bottom panel 11 via hinges and can be rotated around the hinge axis to open or close. When the side panels 12 and 13 are erected, a locking structure (14) adapted to the characteristics of the product can be provided to secure the adjacent side panels 1 and 12, 3 and 13. After sintering is completed, the side panels are unlocked and can be flipped outward to facilitate the removal of fillers and the removal of products.

[0040] In this embodiment, the locking operation improves assembly efficiency and ensures stable connection of the side panels; the flippable design of the side panels greatly reduces the risk of filler residue during coring and improves the coring qualification rate.

[0041] In one embodiment, referring to Figure 2 and Figure 3 The sagger comprises: a container body, consisting of a bottom plate 11 and at least two rotatable side plates 12, 13, wherein the side plates 12, 13 are rotatably connected to the bottom plate 11; at least one plate-shaped heat sink 2, one side of the plate-shaped heat sink 2 is in vertical contact with the bottom plate 11, and at least one of the two rotatable side plates 12, 13 is in contact with the plate-shaped heat sink, and the locking structure 14 comprises a rigid refractory material rod, and corresponding blocks 15 are provided at the connection between the adjacent side plates 1 and 12, 3 and 13, and slots are formed between the adjacent blocks 15, and the blocks 15 on the adjacent side plates 1 and 12, 3 and 13 are adapted to the shape of the slots, and holes are opened on the blocks 15, and the holes of the blocks 15 on any side plate 12 are located on the same straight line, and the rigid refractory material rods are used to pass through the holes on the adjacent side plates 1 and 12, 3 and 13 to lock the adjacent side plates 1 and 12, 3 and 13.

[0042] Specifically, the side panels 12 and 13 are connected to the bottom panel 11 by hinges and can be rotated around the hinge axis to expand or close. When the side panels 12 and 13 are erected, the blocks 15 at the edges of adjacent side panels dock with each other to form a continuous slot, and the through holes on each block 15 are automatically aligned into a straight line in the erected state. A rigid refractory material rod (such as a corundum rod) is inserted along the collinear hole, passing through all the blocks 15, and the bending strength of the rigid rod is used to limit the displacement of the side panels 12 and 13, thereby achieving a stable locking of the side panels. After sintering is completed, the side panels can be unlocked by pulling out the rigid rod 10, and the side panels can be flipped outward and expanded to facilitate the removal of fillers and products.

[0043] In this embodiment, the rigid refractory material rods (such as corundum) are resistant to high temperatures and have high strength, ensuring that the locking structure 14 does not deform at high temperatures and maintains the sealing of the sagger; the alignment design of the block 15 and the through hole simplifies the locking operation and improves assembly efficiency; the flippable side panel design greatly reduces the risk of filler residue during coring and improves the coring qualification rate.

[0044] In one embodiment, referring to Figure 2 and Figure 3The sagger comprises: a container body, consisting of a bottom plate 11 and at least two rotatable side plates 12, 13, wherein the side plates 12, 13 are rotatably connected to the bottom plate 11; at least one plate-shaped heat sink 2, one side of the plate-shaped heat sink 2 is in vertical contact with the bottom plate 11, and at least one of the two rotatable side plates 12, 13 is in contact with the plate-shaped heat sink, and the locking structure 14 comprises a rigid refractory material rod, wherein corresponding blocks 15 are provided at the connection points of the adjacent side plates 1 and 12, 3 and 13, and slots are formed between the adjacent blocks 15, and the blocks 15 on the adjacent side plates 1 and 12, 3 and 13 are adapted to the shape of the slots, and holes are opened on the blocks 15, and the holes of the blocks 15 on any side plate 12 are located on the same straight line, and the rigid refractory material rods are used to pass through the holes on the adjacent side plates 1 and 12, 3 and 13 to lock the adjacent side plates 1 and 12, 3 and 13.

[0045] Specifically, locking structure 14 uses a corundum rod, which replaces a conventional refractory rod. This rod has a Mohs hardness of 9 and a low coefficient of thermal expansion. During the sintering process, the rod undergoes minimal dimensional change upon heating, maintaining a stable gap between the rod and the through-hole of locking block 15. This prevents jamming caused by thermal expansion and ensures that locking structure 14 can be quickly disassembled even at high temperatures.

[0046] In this embodiment, the high temperature stability and wear resistance of the corundum rod significantly extend the service life of the locking structure 14; the low thermal expansion characteristics avoid locking failure at high temperatures, ensure the stability of the sagger structure during sintering, and further reduce product deformation.

[0047] In one embodiment, referring to Figure 2 and Figure 3 The sagger includes: a container body, consisting of a bottom plate 11 and at least two rotatable side plates 12 and 13, wherein the side plates 12 and 13 are rotatably connected to the bottom plate 11; at least one plate-shaped heat sink 2, one side of the plate-shaped heat sink 2 is in vertical contact with the bottom plate 11, and at least one of the two rotatable side plates 12 and 13 is in contact with the plate-shaped heat sink, and a first distance between two sides of the plate-shaped heat sink 2 in contact with the side plate 12 is 92-98% of a second distance between opposite side plates 12 in the sagger. Figure 2 Where H is the first distance, and Hi is the second distance.

[0048] Specifically, the width of the plate-shaped heat sink 2 (i.e., the first distance between the two edges of the plate-shaped heat sink 2 contacting the side panels 12) is 92-98% of the second distance between the opposing side panels 12 within the sagger. During installation, the ends of the heat sink 2 are in close contact with the inner walls of the side panels 12, allowing for smooth placement and removal. They also provide lateral support, limiting product movement within the packing. Furthermore, the heat sink 2 divides the sagger cavity into multiple independent zones, forcing the hot air flow to flow evenly along the fin surfaces.

[0049] In this embodiment, the close fit between the heat sink and the inner diameter of the sagger reduces product shaking and prevents deformation caused by displacement during sintering; the partition design optimizes the thermal field distribution, narrows the temperature difference between products at different positions, and reduces the deformation rate.

[0050] In one embodiment, referring to Figure 2 and Figure 3 The sagger includes: a container body, consisting of a bottom plate 11 and at least two rotatable side plates 12, 13, the side plates 12, 13 being rotatably connected to the bottom plate 11; at least one plate-like heat sink 2, one side of the plate-like heat sink 2 being in vertical contact with the bottom plate 11, at least one of the two rotatable side plates 12, 13 being in contact with the plate-like heat sink, and a strip rib 4 being provided on the surface of the plate-like heat sink 2, the cross-sectional shape of the strip rib 4 being a trapezoid or a rectangle.

[0051] Specifically, the surface of the plate-shaped heat sink 2 is stamped or cast with a trapezoidal cross-section strip rib 4. The strip rib 4 extends perpendicular to the heat sink plane, increasing the heat sink surface area and forming a guide groove to accelerate the heat exchange between the high-temperature airflow and the heat sink.

[0052] In this embodiment, the raised structure of the strip ribs 4 enhances the turbulence effect, improves the heat dissipation efficiency, and increases the heating and cooling rate; the trapezoidal cross-section avoids stress concentration, prevents the heat sink 2 from warping and deformation at high temperatures, and ensures long-term reliability.

[0053] In one embodiment, referring to Figure 2 and Figure 3 The sagger includes: a container body, consisting of a bottom plate 11 and at least two rotatable side plates 12, 13, and the side plates 12, 13 are rotatably connected to the bottom plate 11; at least one plate-like heat sink 2, one side of the plate-like heat sink 2 is in vertical contact with the bottom plate 11, and at least one of the two rotatable side plates 12, 13 is in contact with the plate-like heat sink, and the shape of the container is one of a cuboid, a cylinder or a polyhedron.

[0054] Specifically, the sagger container body is designed to be a rectangular parallelepiped, cylindrical, or polyhedron (e.g., hexagonal), and the rotation axes of the side panels 12 and 13 are adjusted according to the shape. For example, a cylindrical sagger uses curved side panels 12. In this case, the plate-shaped heat sink 2 is circular in shape. The first distance is the first diameter of the plate-shaped heat sink, and the second distance is the second diameter of the cylindrical sagger. The bottom plate 11 is connected by radial hinges. When the side panels 12 are closed, a complete cylindrical structure is formed, and the locking structures 14 are evenly distributed along the circumference.

[0055] In this embodiment, the multi-shape adaptive design meets the sintering requirements of ceramic cores of different sizes and structures; the curved side panels reduce dead angles and further optimize the uniformity of the thermal field, which is particularly suitable for the sintering of high-precision turbine blade cores.

[0056] The present invention also provides a method for reducing deformation of a ceramic core using the sagger described in any one of the above embodiments, referring to Figure 2 and Figure 3 In one embodiment, the method includes:

[0057] After locking the side panels 12, lay the bottom filler on the container bottom plate 11;

[0058] Placing products to be sintered and inserting plate-shaped heat sinks 2 between adjacent products to be sintered;

[0059] Cover with top layer of filler, sinter and cool;

[0060] After sintering is completed, the plate-shaped heat sink 2 is removed and the side plate 12 is unlocked to expose the filler for taking out the product.

[0061] Specifically, the method steps include:

[0062] 1. Laying the bottom filler: Evenly lay alumina-based refractory filler (other refractory materials such as kaolin can also be used) on the bottom plate 11 of the container, and use a scraper to level the surface to ensure that the density of the filler layer is consistent.

[0063] 2. Place the product and heat sink 2: Arrange the ceramic core blank vertically on the bottom filler, insert the plate heat sink 2 between adjacent products, insert the bottom of the heat sink 2 into the filler layer to fix the position, and the top is higher than the product for subsequent operations.

[0064] 3. Cover the top layer of filler: Pour the filler from the top of the product downwards until it completely covers the blank. The filler must completely wrap the exposed part of the heat sink 2.

[0065] 4. Lock the side panels 12: Flip the rotatable side panels 12 and 13 upward to a vertical state, insert the corundum rod 14 through the collinear holes of all the blocks 15, and lock the side panels to form a sealed cavity.

[0066] 5. Sintering and cooling: Place the sagger in a high-temperature sintering furnace, heat it to 1550°C at a rate of 2°C / min, and keep it warm for 2 hours; then slowly cool it to 800°C at a rate of 3°C / min, and then cool it naturally to room temperature.

[0067] 6. Remove the heat sink and core: Pull out the corundum rod 14 to unlock the side plates 12 and 13, and flip the side plate 12 outward to a horizontal position; pull out the plate-shaped heat sinks 2 one by one to expose the loose filler layer, and finally tap the sagger to make the remaining filler fall off, and take out the sintered ceramic core.

[0068] In this embodiment, uniform heat field distribution: the plate-shaped heat sink 2 divides the inner cavity of the sagger into independent hot zones, which improves the heating uniformity of the product and reduces the deformation rate. Efficient coring and low loss: the reversible side panel design is combined with pneumatic cleaning technology to shorten the coring time and reduce the core breakage rate. Structural stability guarantee: the locking structure of the corundum rod does not deform at high temperatures, ensuring the sealing of the sagger cavity during the sintering process, avoiding local overheating problems caused by filler leakage, and improving the product size qualification rate. Energy saving and consumption reduction: the enhanced heat transfer characteristics of the heat sink increase the heating rate, shorten the insulation time, and reduce the unit energy consumption.

[0069] In one embodiment, the method includes: laying a bottom layer of filler on the bottom plate 11 of the container; placing the product to be sintered and inserting the plate-shaped heat sink 2 between adjacent products to be sintered; covering the filler on the top layer of the product and simultaneously vibrating the filler, after covering, locking the side plate 12, sintering and cooling; after sintering is completed, removing the plate-shaped heat sink 12 and unlocking the side plate 12 to expose the filler for taking out the product.

[0070] Specifically, while covering the top layer of filler, a pneumatic vibrator can be used to compact the filler to increase the filler density and eliminate internal voids.

[0071] In this embodiment, the thermal conductivity of the filler after compaction is improved, shortening the sintering and heat preservation time; the dense filler layer effectively suppresses micro-displacement of the product during the sintering process and reduces cracks caused by local stress.

[0072] In one embodiment, the method includes: laying a bottom layer of filler on the bottom plate 11 of the container; placing the product to be sintered and inserting the plate-shaped heat sink 2 between adjacent products to be sintered; locking the side plate 12 after covering the top layer of filler, and sintering and cooling; after sintering is completed, removing the plate-shaped heat sink 2 and unlocking the side plate 12, after laying down the side plate 12 to expose the filler, using an air gun to blow away the filler, and taking out the product.

[0073] Specifically, after unlocking the side panel 12, the side panel 12 is laid down to a horizontal position, and a compressed air gun is used to blow air into the gaps in the packing layer.

[0074] In this embodiment, air gun blowing replaces traditional manual loosening, which improves the cleaning efficiency, avoids core damage caused by mechanical contact, and improves the core sampling qualification rate.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sagger, characterized in that: include: The container body is composed of a bottom plate (11) and at least two rotatable side plates (12), wherein the side plates (12) are rotatably connected to the bottom plate (11); At least one plate-shaped heat sink (2), one side of the plate-shaped heat sink (2) is in vertical contact with the bottom plate (11), and at least one of the two rotatable side plates (12) is in contact with the plate-shaped heat sink.

2. The sagger according to claim 1, wherein The sagger further comprises a locking structure (14), wherein the locking structure (14) is fixed at a connection point between adjacent side plates (12), and the locking structure (14) is used to fix the adjacent side plates (12).

3. The sagger according to claim 2, wherein: The locking structure (14) includes a rigid refractory material rod, and corresponding blocks (15) are provided at the connection of the adjacent side panels (12). A slot is formed between the adjacent blocks (15). The blocks (15) on the adjacent side panels (12) are adapted to the shape of the slot. A hole is opened on the block (15). The holes of the block (15) on any side panel (12) are located on the same straight line. The rigid refractory material rod is used to pass through the holes on the adjacent side panels (12) to lock the adjacent side panels (12).

4. The sagger according to claim 3, wherein: The rigid refractory material rod is a corundum rod.

5. The sagger according to claim 1, wherein: A first distance between two edges of the plate-shaped heat sink (2) in contact with the side plate (12) is 92-98% of a second distance between opposite side plates (12) in the sagger.

6. The sagger according to claim 1, wherein: The surface of the plate-shaped heat sink (2) is provided with strip-shaped ribs (4), and the cross-sectional shape of the strip-shaped ribs (4) is trapezoidal or rectangular.

7. The sagger according to claim 1, wherein: The shape of the container is a cuboid, a cylinder or a polyhedron.

8. A method for reducing deformation of a ceramic core using the sagger according to any one of claims 1 to 7, characterized in that: The following steps are involved: After locking the side panels (12), the bottom filler is laid on the container bottom panel (11); Placing products to be sintered and inserting plate-shaped heat sinks (2) between adjacent products to be sintered; Cover with top layer of filler, sinter and cool; After sintering is completed, the plate-shaped heat sink (2) is removed and the side plate (12) is unlocked to expose the filler for taking out the product.

9. The method according to claim 8, wherein The step of covering the top filler comprises: Cover the top layer of the product with filler and compact the filler at the same time.

10. The method according to claim 8, wherein The step of exposing the filler comprises: After the side panels (12) are lowered, use an air gun to blow the filler loose to expedite removal.

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