Powder metallurgy sintering furnace

Abstract

The utility model discloses a powder metallurgy sintering furnace, including the placement heating structure of body, the cold and hot extraction structure is fixedly connected with one side of placement heating structure, the placement heating structure includes the adjusting drive subassembly of the installation connection to the placement subassembly, and adjusting drive subassembly includes the base body of seat bottom foundation, the fixed connection plate of one side of the upper fixed connection of base body is equipped with the guide sliding groove, and the inside sliding of guide sliding groove is equipped with the sliding plate of driving, the upper fixed connection of sliding plate is equipped with the vertical board, and the vertical board one side fixed connection has the concave furnace cover, the first bearing ring is fixedly connected with the inner ring of concave furnace cover, this powder metallurgy sintering furnace, through the first bearing ring convenient first bearing ring inner ring and the outer ring of furnace body carry out detachable type's matched connection of setting, utilize first bearing ring inner ring and the outer ring of furnace body carry out matched connection when this just avoid the rotation friction condition of furnace body inside with concave furnace cover when being under stress rotation movement.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, and in particular to a powder metallurgy sintering furnace. Background Technology

[0002] Tantalum capacitors are among the most advantageous capacitors in the electronics industry. Compared to other capacitors, they are small in size, have large capacitance, good stability, long lifespan, and can operate under harsh conditions. Tantalum capacitors are used in numerous fields, including communications, computers, digital cameras and digital audio-visual products, automobiles, home and office appliances, instruments, aerospace, and defense. In recent years, there has been significant demand for tantalum capacitors in the communications and IT electronics industries. Currently, the tantalum core of surface-mount solid tantalum capacitors is formed by pressing tantalum powder particles in a molding die. The pressed tantalum core requires heat treatment to increase its overall strength. This heating process is performed using a powder metallurgy sintering furnace.

[0003] Existing powder metallurgy sintering furnaces have a situation where the bottom of the workpiece is in contact with the surface of the placement rack, which may lead to uneven heating of the bottom of the material during sintering, thus affecting the quality of powder metallurgy sintering. Furthermore, after the workpiece is processed, it cannot be cooled and must be cooled naturally, resulting in a low cooling rate, long processing cycle, and reduced processing efficiency. In addition, after heating the workpiece, a large amount of heat is discharged from the furnace through the exhaust pipe, resulting in heat waste. Utility Model Content

[0004] To address the aforementioned issues in existing powder metallurgy sintering furnaces, such as the contact between the bottom of the workpiece and the surface of the placement rack, which may lead to uneven heating of the bottom of the material during sintering and thus affect the quality of powder metallurgy sintering, and the inability to cool the workpiece after processing, requiring natural cooling, resulting in a low cooling rate, long processing cycle, and reduced processing efficiency, further issues arise. Additionally, after heating the workpiece, a large amount of heat is discharged from the furnace through the exhaust pipe, causing heat waste.

[0005] This utility model provides an exhaust gas sterilization device, which adopts the following technical solution:

[0006] A powder metallurgy sintering furnace includes a placement and heating structure for the main body, wherein a hot and cold extraction structure is fixedly connected to one side of the placement and heating structure.

[0007] The placement heating structure includes an adjustment drive assembly for mounting and connecting the placement component, and the adjustment drive assembly includes a base body with a seat bottom foundation. A fixed connecting plate with a guide sliding groove on one side is fixedly connected above the base body, and a driving sliding plate is provided inside the guide sliding groove.

[0008] A vertical plate is fixedly connected above the sliding plate, and a concave furnace cover is fixedly connected to one side of the vertical plate. A first bearing ring is fixedly connected to the inner ring of the concave furnace cover.

[0009] The above technical solution allows for a detachable connection between the inner ring of the first bearing ring and the outer ring of the furnace body. This connection avoids the rotational friction between the furnace body and the inner side of the concave furnace cover during rotational motion, which would otherwise cause rotational friction noise and wear on the concave furnace cover and furnace body.

[0010] Optionally, the inner ring of the concave furnace cover is fixedly connected to a furnace cover sealing plate with a second bearing ring on its surface, and one side of the concave furnace cover is fixedly connected to the output end of a multi-stage electric telescopic rod. The other end of the multi-stage electric telescopic rod is fixedly connected through a through-hole concave plate, and the through-hole concave plate is fixedly connected to the upper side of a fixed connecting plate. A panel controller is fixedly connected to the lower side of the through-hole concave plate.

[0011] The above technical solution, through the multi-stage electric telescopic rod, not only facilitates the driving and telescopic adjustment of the concave furnace cover, but also makes it easy to move the placement frame completely out of the furnace body. This not only makes it convenient for the operator to place the tantalum core, but also avoids the operator having to enter half of the furnace body to retrieve or remove the tantalum core.

[0012] Optionally, the aforementioned placement assembly includes a furnace body with a hollow internal structure, and a through hole is provided at one end of the furnace body. A drive ring is welded to the surface of the furnace body, and a hollow internal cavity ring is fixedly connected inside the furnace body. The cavity rings are connected to each other by hollow tubes, and a gas nozzle is fixedly connected inside the cavity ring. A heating tube with adjustable temperature is fixedly connected below the inner ring of the cavity ring.

[0013] Through the above technical solution, the set drive ring not only plays a supporting welding and fixing role, but also plays a force driving the rotation of the furnace body. In addition, temperature detection module and pressure detection module are fixedly set inside the furnace body and on its surface, respectively. The set temperature detection module detects the heating temperature inside the furnace body, and the set pressure detection module detects the internal pressure of the furnace body to avoid overheating and furnace explosion.

[0014] Optionally, a branch pipe is embedded and fixed in the inner ring of the cavity ring, and one end of the branch pipe is sealed and connected to the connecting pipe through a sealing bearing. One end of the connecting pipe is welded and fixed to the connecting hole. The driving ring is in contact with the electric drive wheel, and the electric drive wheel is installed on the surface of the fixed connecting plate through a fixing nut.

[0015] Through the above technical solution, the cavity ring not only serves as the inner ring for inlay and connection, but also serves as the outer ring for installation and fixation. At the same time, when multiple gas nozzles are set inside the cavity ring, it not only facilitates the rapid extraction of air from the furnace body to quickly create a vacuum environment inside the furnace body, but also effectively facilitates the uniform and distributed delivery of cold air into the furnace body for rapid cooling.

[0016] Optionally, a non-contact placement frame is provided inside the cavity ring, and a heat-conducting hole is provided through the surface of the placement frame. One end of the placement frame is fixedly connected to one side of the furnace cover sealing plate, and a material placement rack is placed inside the placement frame. A material placement groove is provided on the surface of the material placement rack, and another heat-conducting hole is provided through the inside of the material placement groove.

[0017] Through the above technical solution, the material placement rack not only serves as a setting but also facilitates the placement of tantalum cores using the material placement slots. Furthermore, the material placement rack and the placement frame are connected without a fixed connection, which not only facilitates quick separation between the material placement rack and the placement frame but also allows for quick replacement of the material placement racks when multiple racks are prepared, avoiding the need to handle tantalum cores and thus reducing operation time.

[0018] Optionally, the above-mentioned hot and cold extraction structure includes a negative pressure machine and a waste heat recovery machine fixed on one side above the fixed connecting plate. Both the negative pressure machine and the waste heat recovery machine have a heat insulation frame with a hollow internal structure fixed above their surfaces. A gas storage box with a hollow internal structure is fixedly connected to the upper part of the heat insulation frame. A folded air bag is embedded and fixed below the gas storage box. The bottom of the folded air bag is fixedly connected to the through hole adjustment plate.

[0019] Through the above technical solution, the heat insulation frame not only provides heat insulation for cold air, but also prevents the collected heat from being lost quickly and wasted. In addition, the folding airbag is made of high-temperature resistant composite material, which prevents the folding airbag from being damaged when in contact with high temperature. At the same time, the gas storage box is also equipped with a pressure detection module to detect the storage pressure.

[0020] Optionally, the bottom of the aforementioned through-hole adjusting plate is fixedly connected to one end of the telescopic spring, and the other end of the telescopic spring is fixedly connected to the lower part of the heat insulation frame. The through-hole adjusting plate is stably guided and adjusted by a guide rod, and both ends of the guide rod are fixedly connected to the inside of the heat insulation frame. One end of the folding airbag is installed and connected to one end of the heat insulation corrugated pipe, and the other end of the heat insulation corrugated pipe is installed and connected to the first air outlet pipe with a one-way control valve inside. The other end of the first air outlet pipe is installed and connected to one end of the negative pressure machine and the waste heat recovery machine, respectively.

[0021] The above technical solution utilizes the compression and elastic recovery of the spring to automatically squeeze and expel the gas and heat stored inside.

[0022] Optionally, both the negative pressure machine and the waste heat recovery machine are installed and connected to one end of the internal air inlet pipe with a one-way control valve, and the other end of the air inlet pipe is installed and connected to one end of the control branch pipe. The upper part of the air inlet pipe is embedded and connected to one end of the second air outlet pipe, and the other end of the second air outlet pipe passes through the heat insulation frame and is embedded and connected to the gas storage tank.

[0023] The above technical solution effectively uses multiple air intake pipes to differentiate and control the air intakes. This avoids the situation where the air intakes open or close simultaneously, which would not only prevent the separate recovery of cold and hot air but also easily lead to the mixing of gas and heat, reducing the effectiveness of heat and cold air.

[0024] Optionally, the other end of the control branch pipe is also sealed and connected to one end of the connecting pipe through a sealed bearing, and the control branch pipe adopts a three-way pipe structure.

[0025] The above technical solution achieves the same differentiated regulation and control function through the set control branch pipe. Moreover, the set control branch pipe not only facilitates the transportation and recovery of cold air and heat through the same pipeline, but also avoids the need to set up too many pipelines and increase pipeline addition costs.

[0026] In summary, this utility model has at least one of the following beneficial effects: after the tantalum core is placed on the surface of the material placement rack, it is pushed into the furnace body. At this time, the heating tube inside the furnace body is working, and the furnace body is synchronously rotated under the drive of the drive wheel. When the furnace body is synchronously rotated under the drive, the heat generated by the heating tube during operation is tangential to the movement of the material placement rack, thereby making the bottom of the material placement rack evenly heated and improving the sintering quality of the tantalum core.

[0027] When the tantalum core enters the furnace, the negative pressure machine operates to transport the cold air inside the furnace to the folded air bag and gas storage box for collection. After the tantalum core is sintered, the second gas outlet pipe is opened, and the telescopic spring squeezes the folded air bag, which in turn transports the cold air collected inside the folded air bag and gas storage box into the furnace to cool the sintered tantalum core 360°.

[0028] After the tantalum core sintering is completed, the waste heat recovery machine is turned on. When the waste heat recovery machine is working, the heat inside the furnace body is collected in the folded air bag and gas storage box. The heat is collected in the folded air bag and gas storage box to avoid the waste of heat diffusion. When other tantalum cores need to be sintered, the second gas outlet pipe is opened to transfer the collected heat back into the furnace body for heating through the heating tube. The secondary heating of the heat not only shortens the heating time but also quickly increases the heating temperature inside the furnace body to avoid excessive energy waste.

[0029] The material placement racks and frames are connected in a non-fixed manner using placement frames, material placement shelves, material placement slots, and heat conduction holes. This not only facilitates quick access between the material placement racks and frames but also allows operators to place tantalum cores on the surface of the material placement racks and then place the racks back into the placement frames. This avoids prolonged contact between the operator and the furnace body, preventing burns during material handling and effectively increasing the speed of placement and retrieval. Multiple material placement racks can be installed, allowing the operator to place other tantalum cores on the surfaces of other material placement racks while one is sintering, thus preventing long material handling cycles after sintering and cooling, which would reduce work efficiency.

[0030] When the electric drive wheel and drive ring drive the furnace body to rotate under force, this can avoid the tantalum cores after they have been placed to rotate under force. When tantalum cores of different sizes are placed on the surface of the material placement rack, the smaller tantalum cores will rotate and fall off. This not only affects the number of tantalum cores but also increases the loss of tantalum cores. At the same time, when the furnace body is rotated under force, the gas nozzle can be driven to rotate simultaneously to perform 360° comprehensive air blowing cooling treatment on the tantalum cores. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0032] Figure 2 This is a schematic diagram of the heating structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the adjustment drive component of this utility model;

[0034] Figure 4 This is a partial three-dimensional structural diagram of the placement component of this utility model;

[0035] Figure 5 This is a partial three-dimensional exploded view of the placement component of this utility model;

[0036] Figure 6 This is a partial three-dimensional exploded view of the placement component of this utility model;

[0037] Figure 7 This is a partial three-dimensional structural diagram of the hot and cold extraction structure of this utility model;

[0038] Figure 8 This is a partial three-dimensional schematic diagram of the hot and cold extraction structure of this utility model;

[0039] Figure 9 This is a partial three-dimensional exploded structural diagram of the cold and hot extraction structure of this utility model.

[0040] In the diagram: 1. Heating structure placement; 101. Adjustment drive assembly; 1011. Base body; 1012. Fixed connecting plate; 1013. Guide sliding groove; 1014. Drive sliding plate; 1015. Vertical plate; 1016. Concave furnace cover; 1017. First bearing ring; 1018. Furnace cover sealing plate; 1019. Second bearing ring; 10110. Multi-stage electric telescopic rod; 10111. Through-hole concave plate; 10112. Panel controller; 102. Placement assembly; 1021. Furnace body; 1022. Connecting through hole; 1023. Drive ring; 1024. Cavity ring; 1025. Hollow tube; 10214. 1. Gas nozzle; 1027. Connecting pipe; 1028. Electric drive wheel; 1029. Placement frame; 10210. Heat conduction hole; 10211. Material placement rack; 10212. Material placement trough; 10213. Heating tube; 2. Hot and cold extraction structure; 201. Negative pressure machine; 202. Waste heat recovery machine; 203. Insulation frame; 204. Gas storage tank; 205. Folding airbag; 206. Through hole adjustment plate; 207. Telescopic spring; 208. Guide rod; 209. Insulated corrugated pipe; 2010. First gas outlet pipe; 2011. Inlet pipe; 2012. Control branch pipe; 2013. Second gas outlet pipe. Detailed Implementation

[0041] The following is in conjunction with the appendix Figures 1-9 The present invention will be described in further detail below.

[0042] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 An embodiment of this utility model is provided: a powder metallurgy sintering furnace, including a placement and heating structure 1 of the main body, and a hot and cold extraction structure 2 fixedly connected to one side of the placement and heating structure 1.

[0043] The heating structure 1 includes an adjustment drive assembly 101 that is installed and connected to the placement assembly 102. The adjustment drive assembly 101 includes a base body 1011 with a seat bottom base. A fixed connection plate 1012 with a guide slide groove 1013 on one side is fixedly connected to the top of the base body 1011. A drive slide plate 1014 is slidably matched inside the guide slide groove 1013.

[0044] A vertical plate 1015 is fixedly connected above the sliding plate 1014, and a concave furnace cover 1016 is fixedly connected to one side of the vertical plate 1015. A first bearing ring 1017 is fixedly connected to the inner ring of the concave furnace cover 1016.

[0045] The sliding plate 1014, guide sliding groove 1013, vertical plate 1015 and multi-stage electric telescopic rod 10110 constitute a horizontal driving sliding adjustment structure. The horizontal driving sliding adjustment structure composed of the above components effectively changes the left and right sliding interval distance of the concave furnace cover 1016, thereby facilitating the extraction of the material placement rack 10211 and pushing the material in.

[0046] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The inner ring of the concave furnace cover 1016 is fixedly connected to a furnace cover sealing plate 1018 with a second bearing ring 1019 on its surface. One side of the concave furnace cover 1016 is fixedly connected to the output end of the multi-stage electric telescopic rod 10110. The other end of the multi-stage electric telescopic rod 10110 is fixedly connected through the through hole concave plate 10111. The through hole concave plate 10111 is fixedly connected to the upper side of the fixed connecting plate 1012. The lower side of the through hole concave plate 10111 is fixedly connected to a panel controller 10112.

[0047] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The placement component 102 includes a furnace body 1021 with a hollow internal structure, and a connecting through hole 1022 is provided at one end of the furnace body 1021. A drive ring 1023 is welded to the surface of the furnace body 1021, and a hollow cavity ring 1024 with a hollow internal structure is fixedly connected inside the furnace body 1021. The cavity rings 1024 are connected to each other by a hollow tube 1025. A gas nozzle 10214 is fixedly connected inside the cavity ring 1024, and a temperature-adjustable heating tube 10213 is fixedly connected below the inner ring of the cavity ring 1024.

[0048] The furnace body 1021 is designed with an internal heat insulation layer. This design not only prevents heat from diffusing and evaporating through the surface of the furnace body 1021, but also prevents the furnace body 1021 from overheating and causing burns to both the connected equipment and the operator. Furthermore, multiple cavity rings 1024 are provided, and each cavity ring 1024 contains multiple gas nozzles 10214. The distribution of these multiple gas nozzles 10214 and cavity rings 1024 within the furnace body 1021 not only increases the air extraction speed within the furnace body 1021, but also effectively facilitates the uniform distribution of subsequent cold air within the furnace body 1021 for uniform cooling of the tantalum core.

[0049] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A branch pipe 1026 is embedded and fixed in the inner ring of the cavity ring 1024, and one end of the branch pipe 1026 is sealed and connected to the connecting pipe 1027 through a sealed bearing. One end of the connecting pipe 1027 is welded and fixed to the connecting hole 1022, which drives the ring 1023 to contact the electric drive wheel 1028, and the electric drive wheel 1028 is installed on the surface of the fixed connecting plate 1012 through a fixing nut.

[0050] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The cavity ring 1024 has a non-contact placement frame 1029 inside, and the surface of the placement frame 1029 has a through heat conduction hole 10210. One end of the placement frame 1029 is fixedly connected to one side of the furnace cover plate 1018, and a material placement rack 10211 is placed inside the placement frame 1029. The surface of the material placement rack 10211 has a material placement groove 10212, and another heat conduction hole 10210 is through the material placement groove 10212.

[0051] Both the placement frame 1029 and the material placement rack 10211 can be made of metal materials with high melting point and good thermal conductivity. The good thermal conductivity of the placement frame 1029 and the material placement rack 10211 can not only quickly transfer heat but also avoid uneven heat conduction.

[0052] See the attached diagram in the instruction manual. Figure 7 , Figure 8 and Figure 9The hot and cold extraction structure 2 includes a negative pressure machine 201 and a waste heat recovery machine 202 fixed on one side above the fixed connecting plate 1012. Both the negative pressure machine 201 and the waste heat recovery machine 202 have a hollow internal heat insulation frame 203 fixed above their surfaces. A hollow internal gas storage box 204 is fixedly connected to the upper part of the heat insulation frame 203. A folding air bag 205 is embedded and fixed below the gas storage box 204. The bottom of the folding air bag 205 is fixedly connected to the through hole adjustment plate 206.

[0053] Among them, there are two heat insulation frames 203. When the two heat insulation frames 203 are set, cold air and heat can be recovered and utilized separately, and the situation of both being recovered is avoided.

[0054] See the attached diagram in the instruction manual. Figure 7 , Figure 8 and Figure 9 The bottom of the through-hole adjusting plate 206 is fixedly connected to one end of the telescopic spring 207, and the other end of the telescopic spring 207 is fixedly connected to the lower part of the heat insulation frame 203. The through-hole adjusting plate 206 is stably guided and adjusted by the guide rod 208, and both ends of the guide rod 208 are fixedly connected to the inside of the heat insulation frame 203. One end of the folding airbag 205 is installed and connected to one end of the heat insulation corrugated pipe 209, and the other end of the heat insulation corrugated pipe 209 is installed and connected to the first air outlet pipe 2010 with a one-way control valve inside. The other end of the first air outlet pipe 2010 is installed and connected to one end of the negative pressure machine 201 and the waste heat recovery machine 202 respectively.

[0055] The aforementioned components constitute an elastic adjustment structure, which effectively and automatically squeezes and discharges the recovered cold air and heat.

[0056] See the attached diagram in the instruction manual. Figure 7 , Figure 8 and Figure 9 Both the negative pressure unit 201 and the waste heat recovery unit 202 are installed and connected to one end of the air inlet pipe 2011 with a one-way control valve inside. The other end of the air inlet pipe 2011 is installed and connected to one end of the control branch pipe 2012. The upper part of the air inlet pipe 2011 is embedded and connected to one end of the second air outlet pipe 2013. The other end of the second air outlet pipe 2013 passes through the heat insulation frame 203 and is embedded and connected to the gas storage box 204. The other end of the control branch pipe 2012 is also sealed and connected to one end of the connecting pipe 1027 through a sealed bearing. The control branch pipe 2012 adopts a three-way pipe structure.

[0057] Working principle: When using this powder metallurgy sintering furnace, if the tantalum core needs to be placed inside the furnace body 1021 for pre-firing, the multi-stage electric telescopic rod 10110 is controlled by the panel controller 10112. When the multi-stage electric telescopic rod 10110 is in operation, it drives the concave furnace cover 1016, the first bearing ring 1017, the furnace cover sealing plate 1018, the second bearing ring 1019, the placement frame 1029, and the material placement rack 10211 to separate from the furnace body 1021 through the vertical plate 1015. After the material placement rack 10211 is disassembled and separated from the placement frame 1029, the pressed tantalum core is placed inside the material placement slot 10212. When the material placement rack 10211 is full, the material is placed again. After the material placement rack 10211 is placed inside the placement frame 1029, the multi-stage electric telescopic rod 10110 is controlled to push the material placement rack 10211 into the furnace body 1021. At this time, the concave furnace cover 1016, the first bearing ring 1017, the furnace cover sealing plate 1018, and the second bearing ring 1019 are respectively matched and sealed with the inner and outer rings of the furnace body 1021. Then, the negative pressure machine 201 is controlled to start working. During the operation of the negative pressure machine 201, the cold air inside the furnace body 1021 is transported through the cavity ring 1024, hollow pipe 1025, gas nozzle 10214, and connecting pipe 1027 to the folded air bag 205 via the control branch pipe 2012 and the air inlet pipe 2011, and enters the furnace body 1021. The gas inside the folding airbag 205 is gradually delivered to the gas storage tank 204. Simultaneously, the folding airbag 205 gradually inflates, compressing the through-hole adjusting plate 206 downwards and applying pressure to the telescopic spring 207. When the pressure detection module detects that the pressure inside the furnace body 1021 is lower than atmospheric pressure, it closes the air inlet pipe 2011 and the control branch pipe 2012, simultaneously stopping the operation of the negative pressure unit 201. Then, it controls the operation of the heating element 10213 and the electric drive wheel 1028. When the electric drive wheel 1028 operates, it drives the furnace body 1021 and the internal heating element 10213 to rotate synchronously under pressure via the drive ring 1023. At this time, the tantalum core placed on the surface of the material placement rack 10211 is uniformly heated. Simultaneously, during the operation of the heating tube 10213, the temperature detection module 5 inside the furnace body 1021 monitors the internal heating temperature to prevent overheating of the tantalum core. Once the tantalum core is preheated, the heating tube 10213 stops operating. Then, the control branch pipe 2012 and the air inlet pipe 2011 are opened. At this time, the waste heat recovery machine 202 is activated to recover heat from inside the furnace body 1021 into another folded air bag 205 and the gas storage tank 204. After heat recovery is complete, the second air outlet pipe 2013, the air inlet pipe 2011, and the control branch pipe 2012 are opened.At this time, the cold air inside the folding airbag 205 and the gas storage tank 204 is gradually delivered into the cavity ring 1024, the hollow tube 1025 and the gas nozzle 10214 by the elastic recovery compression of the telescopic spring 207. The cold air entering the gas nozzle 10214 is sprayed onto the surface of the material placement rack 10211 to cool the tantalum core. At the same time, the cold air blown out carries the heat of the tantalum core and is discharged through the gas outlet pipe on the surface of the furnace body 1021. After the tantalum core is completely cooled, the above steps are repeated. The multi-stage electric telescopic rod 10110 is controlled to operate, extracting the tantalum core for material removal. Once the new tantalum core is delivered into the furnace body 1021, cold air is extracted and delivered to the gas storage tank 204 and the folding air bag 205. Simultaneously, the second exhaust pipe 2013 is opened, transferring the heat collected in the other gas storage tank 204 and the folding air bag 205 into the furnace body 1021 to preheat the tantalum core. After preheating, the heating tube 10213 is controlled again to heat the tantalum core.

[0058] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A powder metallurgy sintering furnace, comprising a heating structure (1) for placing the main body, characterized in that: A hot and cold extraction structure (2) is fixedly connected to one side of the heating structure (1); The placement heating structure (1) includes an adjustment drive assembly (101) that is installed and connected to the placement component (102), and the adjustment drive assembly (101) includes a base body (1011) with a seat bottom foundation. A fixed connecting plate (1012) with a guide sliding groove (1013) on one side is fixedly connected above the base body (1011), and a driving sliding plate (1014) is provided inside the guide sliding groove (1013). A vertical plate (1015) is fixedly connected above the sliding plate (1014), and a concave furnace cover (1016) is fixedly connected to one side of the vertical plate (1015). A first bearing ring (1017) is fixedly connected to the inner ring of the concave furnace cover (1016).

2. The powder metallurgy sintering furnace according to claim 1, characterized in that: The inner ring of the concave furnace cover (1016) is fixedly connected to a furnace cover sealing plate (1018) with a second bearing ring (1019) on its surface. One side of the concave furnace cover (1016) is fixedly connected to the output end of a multi-stage electric telescopic rod (10110). The other end of the multi-stage electric telescopic rod (10110) is fixedly connected through a through-hole concave plate (10111). The through-hole concave plate (10111) is fixedly connected to the upper side of a fixed connecting plate (1012). A panel controller (10112) is fixedly connected to the lower side of the through-hole concave plate (10111).

3. The powder metallurgy sintering furnace according to claim 1, characterized in that: The placement assembly (102) includes a furnace body (1021) with a hollow internal structure, and a connecting through hole (1022) is provided at one end of the furnace body (1021). A drive ring (1023) is welded to the surface of the furnace body (1021), and a hollow cavity ring (1024) with a hollow internal structure is fixedly connected inside the furnace body (1021). The cavity rings (1024) are connected to each other by hollow tubes (1025). A gas nozzle (10214) is fixedly connected inside the cavity ring (1024), and a temperature-adjustable heating tube (10213) is fixedly connected below the inner ring of the cavity ring (1024).

4. The powder metallurgy sintering furnace according to claim 3, characterized in that: The inner ring of the cavity ring (1024) is inlaid with a branch pipe (1026), and one end of the branch pipe (1026) is sealed and connected to the connecting pipe (1027) through a sealed bearing. One end of the connecting pipe (1027) is welded and fixed to the connecting hole (1022). The driving ring (1023) is in contact with the electric drive wheel (1028), and the electric drive wheel (1028) is installed on the surface of the fixed connecting plate (1012) through a fixing nut.

5. The powder metallurgy sintering furnace according to claim 3, characterized in that: The cavity ring (1024) is provided with a non-contact placement frame (1029) inside, and a heat conduction hole (10210) is provided through the surface of the placement frame (1029). One end of the placement frame (1029) is fixedly connected to one side of the furnace cover sealing plate (1018), and a material placement rack (10211) is placed inside the placement frame (1029). A material placement groove (10212) is provided on the surface of the material placement rack (10211), and another heat conduction hole (10210) is provided through the inside of the material placement groove (10212).

6. The powder metallurgy sintering furnace according to claim 1, characterized in that: The hot and cold extraction structure (2) includes a negative pressure machine (201) and a waste heat recovery machine (202) fixed on one side above the fixed connecting plate (1012). A heat insulation frame (203) with a hollow internal structure is fixed above the surface of the negative pressure machine (201) and the waste heat recovery machine (202). A gas storage box (204) with a hollow internal structure is fixedly connected to the upper part of the heat insulation frame (203). A folded air bag (205) is embedded and fixed below the gas storage box (204). The bottom of the folded air bag (205) is fixedly connected to the through hole adjustment plate (206).

7. The powder metallurgy sintering furnace according to claim 6, characterized in that: The bottom of the through-hole adjusting plate (206) is fixedly connected to one end of the telescopic spring (207), and the other end of the telescopic spring (207) is fixedly connected to the lower part of the heat insulation frame (203). The through-hole adjusting plate (206) is stably guided and adjusted by the guide rod (208), and both ends of the guide rod (208) are fixedly connected to the inside of the heat insulation frame (203). One end of the folding airbag (205) is installed and connected to one end of the heat insulation corrugated pipe (209), and the other end of the heat insulation corrugated pipe (209) is installed and connected to the first air outlet pipe (2010) with a one-way control valve inside. The other end of the first air outlet pipe (2010) is installed and connected to one end of the negative pressure machine (201) and the waste heat recovery machine (202) respectively.

8. The powder metallurgy sintering furnace according to claim 6, characterized in that: The negative pressure machine (201) and the waste heat recovery machine (202) are both installed and connected to one end of the air inlet pipe (2011) with a one-way control valve inside, and the other end of the air inlet pipe (2011) is installed and connected to one end of the control branch pipe (2012). The upper part of the air inlet pipe (2011) is embedded and connected to one end of the second air outlet pipe (2013), and the other end of the second air outlet pipe (2013) passes through the heat insulation frame (203) and is embedded and connected to the gas storage tank (204).

9. The powder metallurgy sintering furnace according to claim 8, characterized in that: The other end of the control branch pipe (2012) is also sealed and connected to one end of the connecting pipe (1027) through a sealed bearing, and the control branch pipe (2012) adopts a three-way pipe structure.

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