CN210966976U - A multi-chambered vacuum continuous furnace for preparation of samarium cobalt permanent magnet - Google Patents
A multi-chambered vacuum continuous furnace for preparation of samarium cobalt permanent magnet Download PDFInfo
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- CN210966976U CN210966976U CN201921115565.9U CN201921115565U CN210966976U CN 210966976 U CN210966976 U CN 210966976U CN 201921115565 U CN201921115565 U CN 201921115565U CN 210966976 U CN210966976 U CN 210966976U
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Abstract
The utility model provides a multi-chambered vacuum continuous furnace for preparation of samarium cobalt permanent magnet belongs to tombarthite preparation equipment technical field, include: the multi-stage furnace body comprises a preheating chamber, a heating chamber and a cooling chamber which are connected in sequence; the transmission mechanism is arranged in the multi-stage furnace body and is used for transmitting workpieces to the preheating chamber, the heating chamber and the cooling chamber; a vacuum system disposed within the multi-stage furnace body for forming a vacuum environment; a cooling system disposed within the cooling chamber for cooling a workpiece. The utility model has the advantages that: the method integrates preheating, sintering and cooling treatment, greatly shortens the production period of products, can realize continuous sintering treatment of rare earth permanent magnet materials, particularly samarium-cobalt permanent magnets, and has high working efficiency.
Description
Technical Field
The utility model belongs to the technical field of tombarthite preparation equipment, a multi-chambered vacuum continuous furnace for preparation of samarium cobalt permanent magnet is related to.
Background
The production and preparation process of the samarium cobalt permanent magnet is generally divided into smelting → powdering → molding → sintering → aging → machining → (surface treatment) → packaging → finished magnetic material. With the rapid development of aerospace, national defense war industry, high-speed trains, intelligent machinery and various sensors, the requirements on the performance of products are higher and higher, the sintering treatment of the samarium-cobalt permanent magnet is basically completed under the vacuum condition at present, the material prepared under the condition is free of oxidation, the performance of the material is greatly improved, and the method is greatly helpful for improving the market competitiveness of the product.
Vacuum sintering is one of the conventional methods for preparing magnetic materials (particularly samarium-cobalt permanent magnets) at present, and the magnetic materials have extremely high requirements on vacuum degree and temperature stability. In order to prevent the magnetic material from being oxidized to reduce the product performance, especially the product performance of the permanent magnetic material has extremely high requirements, and all the products are prepared by using vacuum equipment in the production process.
The performances of samarium cobalt permanent magnets are mostly sensitive parameters of tissue structures, and particularly, the coercive force is very sensitive to microstructures. The sintered magnet requires rapid cooling at high temperature to achieve optimal magnetic properties. Most of the existing samarium cobalt permanent magnet sintering adopts a single-chamber vacuum furnace, and a heating body and a heat preservation layer of a heating chamber need to be cooled down simultaneously in the process of cooling a workpiece, so that the cooling speed is low, the energy consumption is high, and certain influence can be generated on the performance of a product.
Most of the vacuum furnaces on the market in China currently are single-chamber equipment, and the small-batch equipment with various product types and various process parameters can meet the current product production requirements. However, with the continuous development of the technology, the market competition and the increasing labor cost, more and more finished products gradually go to standardization and batch production, which puts higher requirements on vacuum sintering equipment, and puts new requirements on how to realize the continuous sintering treatment of the samarium cobalt permanent magnet and shorten the process time while considering the improvement of relevant parameter indexes in the vacuum sintering process.
Disclosure of Invention
The utility model aims at solving the problems in the prior art and providing a multi-chamber vacuum continuous furnace for preparing samarium cobalt permanent magnet.
The purpose of the utility model can be realized by the following technical proposal: a multi-chambered vacuum continuous furnace for production of samarium cobalt permanent magnet, comprising:
the multi-stage furnace body comprises a preheating chamber, a heating chamber and a cooling chamber which are connected in sequence;
the transmission mechanism is arranged in the multi-stage furnace body and is used for transmitting workpieces to the preheating chamber, the heating chamber and the cooling chamber;
a vacuum system disposed within the multi-stage furnace body for forming a vacuum environment;
a cooling system disposed within the cooling chamber for cooling a workpiece.
Preferably, the vacuum system is of a three-stage vacuum pump structure, and the vacuum system comprises an oil diffusion pump, a roots vacuum pump and a mechanical pump which are sequentially connected in series, vacuum pipelines are arranged in the preheating chamber, the heating chamber and the cooling chamber, and vacuum valves are arranged on the vacuum pipelines and connected with the oil diffusion pump.
Preferably, the bottom of the multi-stage furnace body is further provided with a support wheel set and a ground track, the support wheel set is movably arranged on the ground track, the ground track is used for being fixed on the ground, and the number of the support wheel sets is three and the support wheel sets are respectively arranged at the bottoms of the preheating chamber, the heating chamber and the cooling chamber.
Preferably, the heating chamber and the cooling chamber are both of a double-layer furnace body structure, the heating chamber and the cooling chamber both comprise an inner chamber body and an outer chamber body, a water cooling cavity is formed between the inner chamber body and the outer chamber body, and a water inlet communicated with the water cooling cavity is arranged on the outer chamber body.
Preferably, a graphite heating body, an electrode and a heat insulation layer are arranged in the heating chamber, the heat insulation layer is located in the heating chamber, the graphite heating body is arranged in the heat insulation layer, and the electrode is electrically connected with the graphite heating body.
Preferably, a gate valve is arranged on an interface between the preheating chamber and the heating chamber and an interface between the heating chamber and the cooling chamber, the gate valve comprises a valve plate, a cylinder and a cooling pipeline, the valve plate is provided with a sealing layer and a heat insulation layer, a cooling water channel is arranged in the valve plate, the cooling water pipe is communicated with the cooling water channel, and the cylinder is connected with the valve plate and used for enabling the valve plate to ascend.
Preferably, the number of the transmission mechanisms is two, the two transmission mechanisms are respectively arranged in the preheating chamber and the cooling chamber, the transmission mechanisms comprise a vertical lifting device and a horizontal feeding device, and the horizontal feeding device is arranged on the vertical lifting device.
Preferably, the vertical lifting device is a four-bar linkage, and the vertical lifting device includes a fixed frame, a movable frame, a push rod and two hinged rods, the movable frame is located above the fixed frame and the two hinged rods are arranged in parallel, the number of the hinged rods is at least two, one end of each hinged rod is hinged to the movable frame, a slide block is arranged at the other end of each hinged rod, the slide block is slidably arranged on the fixed frame, and the push rod is connected with the slide block and used for pushing the slide block to move.
Preferably, the horizontal feeding device comprises a screw rod, a nut, a motor and a feeding fork, the screw rod is arranged on the movable frame, the motor is in linkage connection with the screw rod, the nut is arranged on the screw rod, and the feeding fork is arranged on the nut and can move along the screw rod.
Preferably, the cooling system comprises a cooling fan, a heat exchanger and an air duct, the cooling fan and the heat exchanger are arranged at the top of the cooling chamber, the heat exchanger is positioned below the cooling fan, and the air duct is arranged at the side or the bottom of the cooling chamber.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the method integrates preheating, sintering and cooling treatment, greatly shortens the production period of products, can realize continuous sintering treatment of rare earth permanent magnet materials, particularly samarium-cobalt permanent magnets, and has high working efficiency.
2. The multi-stage furnace body is of a detachable structure, and each individual furnace body, such as the preheating chamber, the heating chamber and the cooling chamber, can be assembled and disassembled actually, and because the single furnace body is large in size and difficult to separate when being assembled and disassembled, the support wheel sets are specially arranged at the lower parts of the preheating chamber, the heating chamber and the cooling chamber, so that the preheating chamber, the heating chamber and the cooling chamber can move on the ground rail independently, and the cleaning and the maintenance of the single furnace body can be facilitated.
3. The heating chamber and the cooling chamber adopt an inner-outer double-layer water-cooling jacket structure, and cooling water is introduced to cool the furnace body in the working process, so that the overhigh temperature around the furnace body is avoided.
4. The gate valve plate is designed into a structure integrating sealing and heat insulation, so that the heat insulation effect is achieved, the sealing effect is achieved, and the temperature and the vacuum degree between chambers are not influenced by each other.
Drawings
FIG. 1 is a schematic structural view of a multi-chamber vacuum continuous furnace according to the present invention.
Fig. 2 is a schematic diagram of the lifting state of the transmission mechanism of the present invention.
Fig. 3 is a schematic view of the descending state of the transmission mechanism of the present invention.
In the figure, 110, a preheating chamber; 120. a heating chamber; 121. a graphite heating element; 122. an electrode; 123. a heat-insulating layer; 130. a cooling chamber; 210. a support wheel set; 220. a ground track; 300. a gate valve; 410. a vertical lifting device; 411. a fixed mount; 412. a movable frame; 413. a hinged lever; 414. a slider; 420. a horizontal feeding device; 421. a nut; 422. a feeding fork; 510. a cooling fan; 520. a heat exchanger.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in figure 1, the multi-chamber vacuum continuous furnace for preparing the samarium cobalt permanent magnet comprises a multi-stage furnace body, a transmission mechanism, a vacuum system, a cooling system, a temperature control device, a P L C program control system and a power supply system, wherein the temperature control device is arranged in the multi-stage furnace body and used for monitoring the temperature, the P L C program control system is used for controlling the whole continuous sintering program, so that the sintering work is more automatic, and the power supply system supplies power to the vacuum continuous furnace.
It is worth noting here that the properties of samarium cobalt permanent magnets are mostly texture sensitive parameters, and in particular, the coercivity is very sensitive to the microstructure. The sintered magnet requires rapid cooling at high temperature to achieve optimal magnetic properties. Most of the existing samarium cobalt permanent magnet sintering adopts a single-chamber vacuum furnace, and a heating body and an insulating layer 123 of a heating chamber 120 need to be cooled down simultaneously in the process of cooling a workpiece, so that the cooling speed is low, the energy consumption is high, and certain influence can be caused on the product performance.
Therefore, in order to avoid the problem that the whole single-chamber vacuum furnace has to be cooled when heating and cooling are carried out in the single-chamber vacuum furnace during sintering, a multi-stage furnace body is provided, which comprises a preheating chamber 110, a heating chamber 120 and a cooling chamber 130 which are connected in sequence; specifically, the multi-stage furnace body performs heating and cooling in the process in the heating chamber 120 and the cooling chamber 130, respectively, and particularly performs preheating before heating in order to shorten the process time of the product, thereby greatly shortening the cycle time of the product.
A transmission mechanism disposed within the multi-stage furnace body for transferring workpieces into the preheating chamber 110, the heating chamber 120, and the cooling chamber 130; the transmission mechanism is a structure for transferring the work, and since the temperature in the multi-stage furnace is high, it is difficult for a worker to transfer the work in the furnace, it is necessary to transfer the work to the preheating chamber 110, the heating chamber 120, and the cooling chamber 130 in order by the transmission mechanism.
The vacuum system is used for vacuumizing the preheating chamber 110, the heating chamber 120 and the cooling chamber 130, and the whole process of sintering and aging of the samarium cobalt permanent magnet is basically completed under the vacuum condition or the inert gas filled environment, so that the material prepared under the condition is not oxidized, and the performance of the material is greatly improved.
The cooling system is arranged in the cooling chamber 130 for cooling the workpiece, preferably, the cooling system is only arranged in the cooling chamber 130, while the existing cooling system is generally arranged in a single-chamber heating furnace, so the efficiency is low, the cooling function is separately integrated in the cooling chamber 130, and the workpiece is cooled by the cooling system, so the normal heating function of the heating furnace is not influenced, and the waste of energy is avoided.
Specifically, the workpiece passes through the preheating chamber 110, the heating chamber 120 and the cooling chamber 130 in sequence, in the preheating chamber 110, the vacuum system firstly vacuums the preheating chamber 110, the heating chamber 120 and the cooling chamber 130, then transfers the workpiece into the preheating chamber 110, when the workpiece reaches a predetermined temperature or is heated for a set time, preheating is finished, the workpiece is driven into the heating chamber 120 through the transmission mechanism, then the heating chamber 120 is heated according to a process curve, after sintering is finished, the transmission mechanism transfers the workpiece into the cooling chamber 130 from the heating chamber 120, the cooling chamber 130 carries out air cooling on cooling gas filled into the chamber through the cooling system, when the workpiece is cooled to a temperature at which the workpiece can be taken out of the furnace, the transmission mechanism takes out the workpiece, thereby completing sintering, the continuous sintering furnace with the structure integrates preheating, sintering and cooling treatment, and greatly shortens the production period of the product, can realize the continuous sintering treatment of rare earth permanent magnet materials, particularly samarium-cobalt permanent magnets, and has high working efficiency.
As shown in fig. 1, in addition to the above embodiment, the vacuum system is of a three-stage vacuum pump structure, and the vacuum system includes an oil diffusion pump (not shown), a roots vacuum pump (not shown), and a mechanical pump (not shown) connected in series in sequence, and vacuum pipelines (not shown) are disposed in the preheating chamber 110 and the heating chamber 120, and vacuum valves (not shown) are disposed on the vacuum pipelines and connected to the oil diffusion pump.
Preferably, the vacuum system has a three-stage vacuum pump structure, that is, three vacuum pumps are connected in series to perform vacuum pumping, and specifically, vacuum pipes are provided in the preheating chamber 110, the heating chamber 120, and the cooling chamber 130 to connect the preheating chamber 110, the heating chamber 120, and the cooling chamber 130 to the oil diffusion pump, thereby performing vacuum pumping.
As shown in fig. 1, in addition to the above embodiment, the bottom of the multi-stage furnace body is further provided with a support wheel set 210 and a ground rail 220, the support wheel set 210 is movably disposed on the ground rail 220, the ground rail 220 is used for being fixed on the ground, and the number of the support wheel sets 210 is three and is respectively disposed at the bottoms of the preheating chamber 110, the heating chamber 120 and the cooling chamber 130.
Preferably, the multi-stage furnace body is of a detachable structure, and each individual furnace body, such as the preheating chamber 110, the heating chamber 120 and the cooling chamber 130, can be assembled and disassembled practically, and since the individual furnace body is large in size and difficult to be separated when being assembled and disassembled, the supporting wheel set 210 is particularly provided at the lower portion of the preheating chamber 110, the heating chamber 120 and the cooling chamber 130, so that the preheating chamber 110, the heating chamber 120 and the cooling chamber 130 can be moved on the floor rail 220 individually, which can facilitate cleaning and maintenance of the individual furnace body.
It should be noted here that, the reason why a single-chamber sintering furnace is used in the conventional sintering is partly because the single-chamber sintering furnace is easy to maintain and clean, and if each furnace body is separated, for example, if a certain distance exists between the preheating chamber 110, the heating chamber 120 and the cooling chamber 130, and the furnace bodies are not directly connected, the purpose of continuous sintering cannot be achieved, so that the structure of the support wheel set 210 and the ground rail 220 is particularly adopted to enable each furnace body to be conveniently separated and connected together in order to achieve the purpose of multi-chamber continuous sintering and maintain the single furnace body.
As shown in fig. 1, in addition to the above embodiments, the heating chamber 120 and the cooling chamber 130 are both of a double-layered furnace structure, and each of the heating chamber 120 and the cooling chamber 130 includes an inner chamber body and an outer chamber body, a water cooling cavity (not shown) is formed between the inner chamber body and the outer chamber body, and the outer chamber body is provided with a water inlet communicated with the water cooling cavity.
Preferably, the heating chamber 120 and the cooling chamber 130 are a double-layer furnace body structure, which can realize a water cooling jacket structure, reduce the heat transfer effect between the furnace body and the outside, and when in operation, water is introduced into the water cooling cavity from the water inlet, so as to cool the chamber body and avoid the over-high temperature around the furnace body.
As shown in fig. 1, in the above embodiment, a graphite heating element 121, an electrode 122, an insulating layer 123 are provided in the heating chamber 120, the insulating layer 123 is located in the heating chamber 120, the graphite heating element 121 is provided in the insulating layer 123, and the electrode 122 is electrically connected to the graphite heating element 121.
Preferably, in the inner chamber of the heating chamber 120, a scheme of heating by the graphite heating element 121 and the electrode 122 is actually adopted, and the graphite heating element 121 and the electrode 122 are located in the insulating layer 123, and the insulating layer 123 can isolate the internal heat loss, so that an independent heating system is formed in the heating chamber 120, an optimal hot zone is provided for the vacuum sintering treatment of the samarium cobalt permanent magnet material, a temperature thermocouple can be uniformly arranged in the heating chamber 120 to monitor the furnace temperature, and the temperature of the sintering zone is intelligently controlled and maintained by four zones (a front zone, a middle zone, a rear zone and a bottom zone) of the graphite heating element 121, and thus, the layout can effectively improve the temperature consistency in the vacuum heating and the gas-filled heating furnace. The heating process curve of the heating chamber 120 can be set individually, and different temperature sections can be set according to the process requirements.
As shown in fig. 1, in addition to the above-described embodiment, a gate valve 300 is provided at an interface between the preheating chamber 110 and the heating chamber 120 and an interface between the heating chamber 120 and the cooling chamber 130, and the gate valve 300 includes a valve plate (not shown) having a sealing layer and a heat insulating layer, a cylinder (not shown) having a cooling water passage provided therein, and a cooling pipe (not shown) communicating with the cooling water passage, and a cooling duct (not shown) connected to the cylinder and the valve plate for raising the valve plate.
Preferably, the heating chamber 120 and the preheating chamber 110 and the heating chamber 120 and the cooling chamber 130 are both of an independent sealing structure, the two are sealed by the gate valve 300 in a separating manner, when a valve plate of the gate valve 300 is opened, the transmission mechanism can transfer the workpiece, and after the transfer of the workpiece is completed, the valve plate of the gate valve 300 is closed, so that the furnace body is kept in a sealing state.
Preferably, the inserting and pulling valve is a composite valve which can be used for vacuum sealing and heat insulation. The valve plate is lifted and opened by the air cylinder, the sealing rubber ring is installed on the movable valve plate, and when the valve plate is opened, the sealing rubber ring rises to a normal temperature position along with the valve plate, high-temperature baking in a hot area is avoided, the movable valve plate is cooled by cooling water, the rubber ring below the valve plate is provided with a heat insulation protection baffle, and when the valve plate rises, the baffle blocks heat radiation of heat of a heating chamber to the rubber ring. The valve plates of the gate valves at the two ends are all compressed towards the heating chamber, and when the preheating chamber and the cooling chamber are opened for feeding and discharging, the vacuum degree of the heating chamber is not affected. The gate valve between the heating chamber and the cooling chamber is provided with double heat shields which lift along with the valve plate. Preventing the thermal state workpiece from radiating the valve member.
As shown in fig. 1, in addition to the above embodiment, the number of the transmission mechanisms is two, and the two transmission mechanisms are respectively disposed in the preheating chamber 110 and the cooling chamber 130, the transmission mechanisms include a vertical lifting device 410 and a horizontal feeding device 420, and the horizontal feeding device 420 is disposed on the vertical lifting device 410.
Preferably, the number of the driving mechanisms is two, and the driving mechanisms are respectively located in the foremost preheating chamber 110 and the rearmost cooling chamber 130, and the driving mechanisms mainly perform the transfer of the workpiece by the vertical elevating device 410 and the horizontal feeding device 420.
Specifically, the vertical lifting device 410 moves upwards, the horizontal feeding device 420 clamps the workpiece, the horizontal feeding device 420 moves to drive the workpiece from the preheating chamber 110 to the heating chamber 120, the vertical lifting device 410 descends to place the workpiece in the heating chamber 120 for sintering, and finally the horizontal feeding device 420 and the vertical lifting device 410 reset; in the cooling process, the principle is similar to the heating process, the horizontal feeding device 420 moves into the heating chamber 120, then the vertical lifting device 410 drives the horizontal feeding device 420 to move upwards, then the workpiece is taken into the cooling chamber 130, and finally the vertical lifting device 410 descends to place the workpiece in the cooling chamber 130.
As shown in fig. 1, 2, and 3, on the basis of the above embodiment, the vertical lifting device 410 is a four-bar linkage, and the vertical lifting device 410 includes a fixed frame 411, a movable frame 412, a push rod, and a hinge rod 413, the movable frame 412 is located above the fixed frame 411 and arranged in parallel, the number of the hinge rod 413 is at least two, one end of the hinge rod 413 is hinged to the movable frame 412, the other end of the hinge rod 413 is provided with a slider 414, the slider 414 is slidably arranged on the fixed frame 411, and the push rod (not shown in the figures) is connected to the slider 414 for pushing the slider 414 to move.
Preferably, the vertical lifting device 410 employs a four-bar linkage mechanism, which enables the fixed frame 411 and the movable frame 412 to stably and reliably realize lifting movement, and further enables the movable frame 412 to perform a certain horizontal displacement, thereby facilitating horizontal feeding.
Preferably, the fixed frame 411 and the movable frame 412 may be long rod-shaped structures, or may be two i-shaped structures that are in the same plane and are parallel, wherein the number of the hinge rods 413 is two or four, two hinge rods 413 are provided on the same side of the fixed frame 411 and the movable frame 412, so as to form a four-bar linkage mechanism, and the push rod is preferably a piston rod of a piston, and is capable of pushing the slider 414 at the lower end of the hinge rod 413, so that the hinge rod 413 moves from an inclined state to a vertical state, so as to jack up the movable frame 412, and finally achieve the purpose of vertical lifting.
As shown in fig. 1, 2, and 3, in addition to the above embodiment, the horizontal feeding device 420 includes a lead screw (not shown), a nut 421, a motor (not shown), and a feeding fork 422, the lead screw is disposed on the movable frame 412, the motor is linked with the lead screw, the nut 421 is disposed on the lead screw, and the feeding fork 422 is disposed on the nut 421 and can move along the lead screw.
Preferably, the horizontal feeding device 420 is configured to move horizontally by using a screw nut 421, and specifically, a screw and a motor are mounted on the movable frame 412, the motor can drive the screw to rotate, the nut 421 is disposed on the screw, and the feeding fork 422 is disposed on the nut 421, and when the screw rotates, the screw nut 421 can move horizontally along the screw, so as to drive the feeding fork 422 to move.
Preferably, the fork 422 further has a roller thereon, and the movable frame 412 has a U-shaped rail thereon, the roller being located in the U-shaped rail, so as to guide the fork to move horizontally.
As shown in fig. 1, on the basis of the above embodiment, the cooling system includes a cooling fan 510, a heat exchanger 520, and an air duct (not shown), the cooling fan 510 and the heat exchanger 520 are disposed on the top of the cooling chamber 130, the heat exchanger 520 is located below the cooling fan 510, and the air duct is disposed on the side or the bottom of the cooling chamber 130.
Preferably, the cooling fan 510 and the heat exchanger 520 are installed at the top of the cooling chamber 130, the air ducts are installed at the side and bottom surfaces of the cooling chamber, the cooling air enters from the side and bottom surfaces of the air ducts and blows onto the workpiece, and the heat is taken away through the heat exchange of the heat exchanger 520 from the upper part, so as to realize the rapid cooling of the workpiece.
It should be noted that the cooling air is blown upwards from the side and bottom of the cooling chamber 130, the cooling fan 510 is used for generating suction, the cooling air passes through the heat exchanger 520 before being sucked out, so as to cool, and the cooled cooling air is sucked out by the cooling fan 510, so as to cool the workpiece quickly and efficiently.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A multi-chambered vacuum continuous furnace for preparation of samarium cobalt permanent magnet which characterized in that includes:
the multi-stage furnace body comprises a preheating chamber, a heating chamber and a cooling chamber which are connected in sequence;
the transmission mechanism is arranged in the multi-stage furnace body and is used for transmitting workpieces to the preheating chamber, the heating chamber and the cooling chamber;
a vacuum system disposed within the multi-stage furnace body for forming a vacuum environment;
a cooling system disposed within the cooling chamber for cooling a workpiece.
2. A multi-chamber vacuum continuous furnace for use in the manufacture of samarium cobalt permanent magnets as defined in claim 1 wherein: the vacuum system is of a three-stage vacuum pump structure and comprises an oil diffusion pump, a roots vacuum pump and a mechanical pump which are sequentially connected in series, vacuum pipelines are arranged in the preheating chamber, the heating chamber and the cooling chamber, and vacuum valves are arranged on the vacuum pipelines and connected with the oil diffusion pump.
3. A multi-chamber vacuum continuous furnace for use in the manufacture of samarium cobalt permanent magnets as defined in claim 1 wherein: the bottom of the multi-stage furnace body is further provided with a supporting wheel set and a ground track, the supporting wheel set is movably arranged on the ground track, the ground track is used for being fixed on the ground, the number of the supporting wheel sets is three, and the supporting wheel sets are respectively arranged at the bottoms of the preheating chamber, the heating chamber and the cooling chamber.
4. A multi-chamber vacuum continuous furnace for use in the manufacture of samarium cobalt permanent magnets as defined in claim 1 wherein: the heating chamber and the cooling chamber are both of a double-layer furnace body structure, the heating chamber and the cooling chamber respectively comprise an inner chamber body and an outer chamber body, a water cooling cavity is formed between the inner chamber body and the outer chamber body, and a water inlet communicated with the water cooling cavity is formed in the outer chamber body.
5. A multi-chamber vacuum continuous furnace for the manufacture of samarium cobalt permanent magnets as defined in claim 1 or claim 4 wherein: the heating chamber is internally provided with a graphite heating body, an electrode, a heat preservation layer, wherein the heat preservation layer is positioned in the heating chamber, the graphite heating body is arranged in the heat preservation layer, and the electrode is electrically connected with the graphite heating body.
6. A multi-chamber vacuum continuous furnace for use in the manufacture of samarium cobalt permanent magnets as defined in claim 1 wherein: the preheating chamber with the interface of heating chamber and the heating chamber with be provided with the push-pull valve on the interface of cooling chamber, the push-pull valve includes valve plate, cylinder and cooling duct, the valve plate has sealing layer and insulating layer, be provided with the cooling water course in the valve plate, the cooling duct with the cooling water course intercommunication, the cylinder with the valve plate is connected and is used for making the valve plate rises.
7. A multi-chamber vacuum continuous furnace for use in the manufacture of samarium cobalt permanent magnets as defined in claim 1 wherein: the number of the transmission mechanisms is two, the two transmission mechanisms are respectively arranged in the preheating chamber and the cooling chamber, each transmission mechanism comprises a vertical lifting device and a horizontal feeding device, and the horizontal feeding device is arranged on the vertical lifting device.
8. A multi-chamber vacuum continuous furnace for use in the manufacture of samarium cobalt permanent magnets as defined in claim 7 wherein: vertical lift device is four-bar mechanism, and vertical lift device includes mount, adjustable shelf, push rod and hinge bar, the adjustable shelf is located the top of mount and both are parallel arrangement, the quantity of hinge bar is two at least, the one end of hinge bar with the adjustable shelf is articulated and the other end is provided with the slider, slider slidable sets up on the mount, the push rod with the slider is connected and is used for promoting the slider removes.
9. A multi-chambered, vacuum continuous furnace for the manufacture of samarium cobalt permanent magnets as defined in claim 8 wherein: horizontal material feeding unit includes lead screw, motor and pay-off fork, the lead screw sets up on the adjustable shelf, the motor with the lead screw linkage is connected, the screw sets up on the lead screw, the pay-off fork sets up just can follow on the screw the lead screw removes.
10. A multi-chamber vacuum continuous furnace for use in the manufacture of samarium cobalt permanent magnets as defined in claim 1 wherein: the cooling system comprises a cooling fan, a heat exchanger and an air duct, wherein the cooling fan and the heat exchanger are arranged at the top of the cooling chamber, the heat exchanger is positioned below the cooling fan, and the air duct is arranged at the side part or the bottom of the cooling chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921115565.9U CN210966976U (en) | 2019-07-16 | 2019-07-16 | A multi-chambered vacuum continuous furnace for preparation of samarium cobalt permanent magnet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921115565.9U CN210966976U (en) | 2019-07-16 | 2019-07-16 | A multi-chambered vacuum continuous furnace for preparation of samarium cobalt permanent magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421161A (en) * | 2019-07-16 | 2019-11-08 | 宁波宁港永磁材料有限公司 | A kind of multi chamber vacuum continuous oven for the preparation of samarium cobalt permanent magnet body |
-
2019
- 2019-07-16 CN CN201921115565.9U patent/CN210966976U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421161A (en) * | 2019-07-16 | 2019-11-08 | 宁波宁港永磁材料有限公司 | A kind of multi chamber vacuum continuous oven for the preparation of samarium cobalt permanent magnet body |
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