Annealing furnace for magnetic material production
Through the integration of an automatic traction system in the production of magnetic material production, the problem of external equipment traction in the existing technology delivery vehicle is solved, and the automated operation of the feeding vehicle is realized, and the production efficiency and the reliability of the equipment are improved.
Patent Information
- Application Number
- CN202420101080.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-01-16
AI Technical Summary
The existing magnetic material production annealing furnace requires external equipment to traction of the feeder truck, which leads to inconvenient operation and easy damage to the equipment, affecting the continuity and efficiency of the process.
Design an annealing furnace used for magnetic materials, integrates an automatic traction system, and realizes the automatic opening and stop traction work of the feed vehicle through the servo motor, belt wheels and racks installed on the furnace body.
The automation operation of the feeding vehicle is realized, the manual intervention is reduced, the continuity and efficiency of the process are improved, and the risk of equipment damage is reduced.
Smart Images

Figure CN222418517U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of magnetic material production devices, in particular to an annealing furnace used for magnetic material production. Background Art
[0002] The process flow of magnet production is: batching - smelting - hydrogen crushing - air flow grinding - forming - isostatic pressing - oil stripping - sintering - post-processing. The sintering process requires the use of an annealing furnace. Only when the annealing furnace works smoothly can the production of magnets proceed smoothly.
[0003] China Patent Authorization Announcement No.: CN210596150U, Authorization Announcement Date: May 22, 2020, discloses an annealing furnace for magnetic material production, including a furnace body and a feeding trolley that can enter and exit the furnace body, the bottom of the feeding trolley is provided with rollers, the feeding trolley includes a loading plate, the loading plate is fixedly connected to a material rack, the material rack includes a bracket and a plurality of drawers arranged on the bracket, and the plurality of drawers are arranged at the same distance from the upper end of the bracket to the lower end of the bracket. The disadvantage of this technical solution is that after the materials are placed on the three drawers respectively, the drawers are inserted into the bracket, and then the traction machine needs to be controlled to allow the feeding trolley to be pulled in and out of the furnace body for work. However, the traction machine here is an external device, so not only does it need to manually control the traction machine to implement the work of the feeding trolley in and out of the furnace body, but the external equipment may be poorly connected and damaged by collision with other objects, which directly affects the work of the feeding trolley in and out of the furnace body, that is, directly affects the working effect of the annealing furnace.
[0004] In summary, the traction device can be directly installed on the annealing furnace device, which reduces the probability of errors occurring when the annealing furnace is working. Utility Model Content
[0005] The utility model aims to overcome the deficiency of the prior art that an external device is needed to pull a feeding vehicle, and provides an annealing furnace for magnetic material production which can automatically start and stop the pulling work.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] An annealing furnace for magnetic material production, comprising a furnace body and a feeding car, wherein the furnace body is provided with a socket, a discharge port and a plurality of discharge troughs, wherein the plurality of discharge troughs are symmetrically distributed at the left and right ends of the discharge port, wherein the discharge trough is connected with the discharge port, wherein a belt ring is installed on the discharge trough, wherein a rack and a belt pulley are installed on the belt ring, wherein the rack is sleeved outside the belt ring, wherein the belt pulley comprises a plurality of pulleys, wherein the plurality of pulleys are evenly distributed, wherein the belt pulley is sleeved inside the belt ring, wherein a power supply, a single chip microcomputer and a plurality of servo motors are installed on the furnace body, wherein the servo motors correspond to the belt pulleys one by one, and wherein a motor is installed on the servo motor Axle, the pulley is connected to the motor shaft, a furnace door is installed at the discharge port, the furnace door matches the discharge port, the furnace door is detachably connected to the furnace body, a pin is installed on the furnace door, the pin corresponds to the socket, a switch is installed in the socket, the switch and the servo motor are electrically connected to the single-chip microcomputer, the single-chip microcomputer is electrically connected to the power supply, a drawer and a plurality of steps are installed on the feeding trolley, the drawer is detachably connected to the feeding trolley, a plurality of steps are symmetrically distributed at the left and right ends of the feeding trolley, the steps correspond one to one to the discharge trough, a rack two is installed on the steps, and the rack two matches the rack one.
[0008] This design sets a discharge port on the furnace body, so that the feeding car can smoothly pass through the discharge port and enter and exit the furnace body, and several discharge troughs are symmetrically distributed at the left and right ends of the discharge port, the discharge trough is connected with the discharge port, and a belt ring is installed on the discharge trough, and a rack and a pulley are installed on the belt ring. Here, the rack is set outside the belt ring, and the pulley is set inside the belt ring, and several pulleys are evenly distributed. Not only that, the servo motor installed on the furnace body is connected to the pulley through the motor shaft, so the single-chip microcomputer is electrically connected to the power supply, and the servo motor is electrically connected to the single-chip microcomputer, which allows the power supply to provide working energy, and the servo motor can The motor shaft is rotated smoothly, that is, the rack 1 set outside the belt loop is driven to rotate. At the same time, a drawer and several steps are installed on the feeding cart. The drawer here is for placing materials, and the steps correspond to the discharge trough one by one. Then, when the feeding cart is sent into the discharge port, the steps can be smoothly inserted into the discharge trough, and rack 2 is installed on the steps, and rack 2 is matched with rack 1. The step inserted into the discharge trough can drive the feeding cart to move when rack 2 and rack 1 are meshed. In other words, the feeding cart is sent into the furnace body under the rotation of the motor shaft. Of course, there is also a socket on the furnace body here, and a switch is installed in the socket. The switch is electrically connected to the single-chip microcomputer, and the furnace door is installed at the discharge port. The furnace door is not only detachably connected to the furnace body, but also the pins installed on the furnace door correspond to the socket. Then, after the feeding car enters the furnace body, it can control the furnace door to close the discharge port. When the furnace door closes the discharge port, the pins are smoothly inserted into the socket. This not only successfully completes the connection between the furnace door and the furnace body, but also allows the pins to touch the switch in the socket. The switch transmits the contact information to the single-chip microcomputer. After the single-chip microcomputer is working, it can transmit information to the servo motor, and the servo motor can stop working, that is, the motor shaft will no longer continue to move the feeding cart, and the feeding cart will be stably placed in the furnace body. In this way, when the servo motor is working, the rack 1 on the belt ring cooperates with the rack 2 on the feeding cart step, which can smoothly drive the movement of the feeding cart. The switch at the socket cooperates with the pin on the furnace door, and under the operation of the single-chip microcomputer, the movement of the feeding cart can be stopped. In this way, the purpose of automatically starting and stopping the traction work is achieved.
[0009] Preferably, the feeding cart is equipped with a material rack and a plurality of rollers, the material rack is placed at the top of the feeding cart, the rollers are placed at the bottom of the feeding cart, the drawers include a plurality of drawers, the drawers are evenly distributed from the top to the bottom of the material rack, the drawers are detachably connected to the material rack, a plurality of rollers are symmetrically distributed with the center of the feeding cart as the base point, and the rollers are detachably connected to the feeding cart. This design installs a material rack and a plurality of rollers on the feeding cart, places the material rack at the top of the feeding cart, and the rollers are placed at the bottom of the feeding cart, and a plurality of drawers are evenly distributed from the top to the bottom of the material rack, and the drawers are detachably connected to the material rack, so that the drawers are directly controlled to enter and exit the feeding cart under the support effect of the material rack, and the distribution of a plurality of drawers can place multiple materials for work. A plurality of rollers are symmetrically distributed with the center of the feeding trolley as the base point. The rollers are detachably connected to the feeding trolley, so the movement of the feeding trolley is carried out under the rolling effect of the rollers, thereby reducing the friction force when the feeding trolley moves.
[0010] Preferably, the material rack is provided with a drawer opening and a plurality of sliding grooves, the drawer opening is placed at the left end of the material rack, and the plurality of sliding grooves are symmetrically distributed at the front and rear ends of the drawer opening, the drawer is provided with an embedding groove, a handle and a plurality of sliding blocks are installed on the drawer, the handle is placed in the embedding groove, the handle is detachably connected to the drawer, and the sliding blocks correspond to the sliding grooves one by one. In this design, by providing a drawer opening on the material rack, the drawer opening is placed at the left end of the material rack, and the plurality of sliding grooves are symmetrically distributed at the front and rear ends of the drawer opening, the sliding blocks on the drawer can be inserted into the sliding grooves, and the drawer can smoothly enter and exit the drawer opening. Here, the drawer is provided with an embedding groove, the handle is placed in the embedding groove, and the handle is detachably connected to the drawer, so that not only the installation of the handle does not increase the volume of the drawer, so that it can smoothly enter and exit the drawer opening, but also the handle can be controlled to rotate to drive the drawer in and out of the material rack, so as to place or take out materials.
[0011] Preferably, a baffle and a plurality of rotating blocks are installed on the material rack, the baffle is placed at the right end of the material rack, the plurality of rotating blocks are symmetrically distributed at the front and rear ends of the draw box opening, the cross-sectional shape of the rotating block is L-shaped, and the rotating block is detachably connected to the draw box. In this design, by installing a baffle on the right end of the material rack, the draw box can be blocked to prevent the draw box from being separated from the material rack at the right end when the draw box moves, and the plurality of rotating blocks are symmetrically distributed at the front and rear ends of the draw box opening, and the cross-sectional shape of the rotating block is L-shaped, and the rotating block is detachably connected to the draw box, then after inserting the draw box, the rotating block can be rotated, and the rotating block will block the draw box to prevent the draw box from being separated from the material rack at the left end of the material rack.
[0012] Preferably, the servo motor is placed at the front end of the pulley, and a plurality of rolling bearings are installed on the furnace body. The rolling bearings are placed at the rear end of the pulley, and the rolling bearings correspond to the pulley one by one. The rolling bearings include an inner ring and an outer ring. The servo motor and the outer ring are both connected to the furnace body, and one end of the motor shaft is connected to the servo motor, and the other end of the motor shaft passes through the pulley and is connected to the inner ring. This design places the servo motor at the front end of the pulley, and installs the rolling bearings at the rear end of the pulley. Here, the outer rings of the servo motor and the rolling bearings are connected to the furnace body, and one end of the motor shaft is connected to the servo motor, and the other end passes through the pulley and is connected to the inner ring. Then, the servo motor drives the motor shaft to rotate, and the motor shaft can be smoothly rotated under the support effect of the rolling bearings.
[0013] Preferably, the rack 1 and the rack 2 are both covered with protective covers. In this design, by covering the rack 1 and the rack 2 with protective covers, during the movement of the feeding vehicle, the movement of the rack 1 and the rack 2 when they are meshed is performed under the protection of the protective covers, so as to avoid damage to the rack 1 and the rack 2 during operation, which may affect the operation of the annealing furnace.
[0014] The beneficial effects of the utility model are: the purpose of automatically starting and stopping the traction work can be achieved; the material can be placed and taken out smoothly; and a component is installed to enable the pulley to work stably under the supporting effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model;
[0016] Figure 2 It is a schematic diagram of a working state of the utility model;
[0017] Figure 3 It is a structural schematic diagram of the feeding vehicle of the utility model;
[0018] Figure 4 It is a structural schematic diagram of rack 1 and rack 2 of the utility model;
[0019] Figure 5 It is a connection schematic diagram of the pulley of the utility model.
[0020] In the figure: 1, furnace body, 2, discharge port, 3, furnace door, 4, feed cart, 5, material rack, 6, drawer, 7, roller, 8, discharge chute, 9, step, 10, baffle, 11, sliding groove, 12, slider, 13, outer ring, 14, rotating block, 15, embedded groove, 16, handle, 17, belt ring, 18, pulley, 19, rack 1, 20, rack 2, 21, single-chip microcomputer, 22, power supply, 23, servo motor, 24, motor shaft, 25, inner ring, 26, socket, 27, pin. DETAILED DESCRIPTION
[0021] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0022] like Figure 1 , Figure 2 and Figure 4 In the embodiment shown, an annealing furnace for magnetic material production includes a furnace body 1 and a feeding car 4. The furnace body 1 is provided with a socket 26, a discharge port 2 and a plurality of discharge troughs 8. The plurality of discharge troughs 8 are symmetrically distributed at the left and right ends of the discharge port 2. The discharge trough 8 is connected to the discharge port 2. A belt ring 17 is installed on the discharge trough 8. A rack 19 and a pulley 18 are installed on the belt ring 17. The rack 19 is mounted outside the belt ring 17. The pulley 18 includes a plurality of pulleys 18, and the plurality of pulleys 18 are evenly distributed. The pulley 18 is mounted inside the belt ring 17. A power supply 22, a single-chip microcomputer 21 and a plurality of servo motors 23 are installed on the furnace body 1. The servo motors 23 correspond to the pulleys 18 one by one. A motor shaft 24 is installed on the machine 23, and the pulley 18 is connected to the motor shaft 24. A furnace door 3 is installed at the discharge port 2, and the furnace door 3 matches the discharge port 2. The furnace door 3 is detachably connected to the furnace body 1. A pin 27 is installed on the furnace door 3, and the pin 27 corresponds to the socket 26. A switch is installed in the socket 26. The switch and the servo motor 23 are electrically connected to the single-chip microcomputer 21, and the single-chip microcomputer 21 is electrically connected to the power supply 22. A drawer 6 and a plurality of steps 9 are installed on the feeding trolley 4, and the drawer 6 is detachably connected to the feeding trolley 4. A plurality of steps 9 are symmetrically distributed at the left and right ends of the feeding trolley 4, and the steps 9 correspond one by one to the discharge trough 8. A rack 20 is installed on the step 9, and the rack 20 matches the rack 19.
[0023] like Figure 2 and Figure 3 As shown, a material rack 5 and a plurality of rollers 7 are installed on the feeding trolley 4. The material rack 5 is placed at the top of the feeding trolley 4, and the rollers 7 are placed at the bottom of the feeding trolley 4. The drawers 6 include a plurality of drawers 6, and the drawers 6 are evenly distributed from the top to the bottom of the material rack 5. The drawers 6 are detachably connected to the material rack 5. The rollers 7 are symmetrically distributed with the center of the feeding trolley 4 as the base point, and the rollers 7 are detachably connected to the feeding trolley 4. A drawer opening and a plurality of sliding grooves 11 are provided on the material rack 5. The drawer opening is placed at the left end of the material rack 5. The plurality of sliding grooves 11 are symmetrically distributed at the front and rear ends of the drawer opening. An embedded groove 15 is provided on the drawer 6. A handle 16 and a plurality of sliders 12 are installed on the drawer 6. The handle 16 is placed in the embedded groove 15. The handle 16 is detachably connected to the drawer 6. The sliders 12 correspond to the sliding grooves 11 one by one. A baffle 10 and a plurality of rotating blocks 14 are installed on the material rack 5. The baffle 10 is placed at the right end of the material rack 5. The plurality of rotating blocks 14 are symmetrically distributed at the front and rear ends of the drawer opening. The cross-sectional shape of the rotating block 14 is L-shaped. The rotating block 14 is detachably connected to the drawer 6.
[0024] like Figure 4 and Figure 5 As shown, the servo motor 23 is placed at the front end of the pulley 18, and a plurality of rolling bearings are installed on the furnace body 1. The rolling bearings are placed at the rear end of the pulley 18, and the rolling bearings correspond to the pulley 18 one by one. The rolling bearings include an inner ring 25 and an outer ring 13. The servo motor 23 and the outer ring 13 are both connected to the furnace body 1. One end of the motor shaft 24 is connected to the servo motor 23, and the other end of the motor shaft 24 passes through the pulley 18 and is connected to the inner ring 25. A protective cover is mounted on the rack 1 19 and the rack 2 20.
[0025] First, check the structural connection stability of the furnace body 1 and the feeding car 4, especially whether the power supply 22, single-chip microcomputer 21, servo motor 23 and switch installed on the furnace body 1 can work smoothly. Then control the drawer 6 on the material rack 5. Here, several drawers 6 are evenly distributed from the top to the bottom of the material rack 5, and the drawer opening is placed at the left end of the material rack 5. The drawer 6 is placed at the drawer opening. There are also several sliding grooves 11 symmetrically distributed at the front and rear ends of the drawer opening. The slider 12 installed on the drawer 6 corresponds to the sliding groove 11 one by one. Then the drawer 6 can move stably forward and backward with the cooperation of the slider 12 and the sliding groove 11. Not only that, a handle 16 is also installed in the embedded groove 15 on the drawer 6. , the handle 16 can be connected to the rolling shaft, and the left and right ends of the rolling shaft can be connected to the drawer 6 through micro rolling bearings, so that the handle 16 will not affect the volume of the drawer 6, thereby affecting the smooth entry and exit of the drawer 6 from the material rack 5, and the handle 16 can be directly controlled to rotate so that the drawer 6 can be pulled out or pushed in. When the drawer 6 is pulled out, the material can be placed, and when the drawer 6 is pushed in, the baffle 10 at the rear end of the material rack 5 can be blocked to prevent the drawer 6 from detaching from the rear end of the material rack 5. After the drawer 6 is pushed in, the L-shaped rotating blocks 14 at the front and rear ends of the drawer opening can be directly controlled to allow the rotating blocks 14 to block the front end of the drawer 6, so that the drawer 6 can be prevented from detaching from the front end of the material rack 5, and the material is stably limited in the drawer 6, that is, limited on the material rack 5.
[0026] The material rack 5 is placed on the top of the feeding trolley 4, and a plurality of rollers 7 are installed at the bottom of the feeding trolley 4. The plurality of rollers 7 are symmetrically distributed with the center of the feeding trolley 4 as the base point. The rollers here can be selected in the rolling bearing mode. The inner ring of the rolling bearing is installed with a limit shaft connected to the bottom of the feeding trolley 4, and the outer ring of the rolling bearing can rotate stably, thereby driving the feeding trolley 4 to move. In this way, when the feeding trolley 4 is pushed into the discharge port 2 of the furnace body 1, the step 9 installed on the feeding trolley 4 can be inserted into the discharge trough 8 distributed at the left and right ends of the discharge port 2. Not only does the furnace body 1 limit the feeding trolley 4, but it also allows the rack 2 20 installed on the step 9 to mesh with the rack 1 19 set outside the belt ring 17. It is worth noting that the discharging chute 8 here is equipped with a belt ring 17, a servo motor 23 and a rolling bearing, a rack 19 is mounted on the outside of the belt ring 17, and a pulley 18 is mounted inside the belt ring 17, and the motor shaft 24 of the servo motor 23 passes through the pulley 18 and is connected to the inner ring 25 of the rolling bearing. Of course, the single-chip microcomputer 21 is electrically connected to the power supply 22, and the servo motor 23 is electrically connected to the single-chip microcomputer 21, so the power supply 22 provides energy to allow the servo motor 23 to drive the motor shaft 24 to rotate, and the motor shaft 24 can drive the pulley 18 to rotate, that is, under the cooperation of the rack 19 and the rack 20, the feeding car 4 moves smoothly under the influence of the step 9 until the feeding car 4 enters the furnace body 1 Inside, the furnace door 3 can be controlled to close the discharge port 2. The furnace door 3 here can naturally be hinged, that is, the rotation of the furnace door 3 can directly close the upper discharge port 2. At the same time, the pin 27 installed on the furnace door 3 can be smoothly inserted into the socket 26 on the furnace body 1, which will naturally make the pin 27 touch the switch in the socket 26. Then the switch can transmit the touch information to the electrically connected single-chip microcomputer 21. After the single-chip microcomputer 21 works, the information is transmitted to the servo motor 23, and the servo motor 23 will turn off the rotation of the motor shaft 24, that is, turn off the movement of the feeding cart 4, so that the material on the feeding cart 4 is stably limited in the furnace body 1, and the production of magnetic materials can be carried out. Here, the operation of the servo motor 23 allows the rack 19 on the belt loop 17 to cooperate with the rack 20 on the step 9 of the feeding trolley 4, so that the feeding trolley 4 can be smoothly driven to move, and the switch at the socket 26 cooperates with the pin 27 on the furnace door 3. Under the operation of the single-chip microcomputer 21, the movement and driving work of the feeding trolley 4 can be stopped, so that the purpose of automatically starting and stopping the traction work is achieved.
Claims
1. An annealing furnace for magnetic material production, characterized in that: The invention comprises a furnace body (1) and a feeding vehicle (4), wherein the furnace body (1) is provided with a socket (26), a discharge port (2) and a plurality of discharge troughs (8), wherein the plurality of discharge troughs (8) are symmetrically distributed at the left and right ends of the discharge port (2), wherein the discharge trough (8) is communicated with the discharge port (2), wherein a belt ring (17) is installed on the discharge trough (8), wherein a rack (19) and a belt pulley (18) are installed on the belt ring (17), wherein the rack (19) is sleeved outside the belt ring (17), wherein the belt pulley (18) comprises a plurality of belt pulleys (18) which are evenly distributed, wherein the belt pulley (18) is sleeved inside the belt ring (17), wherein a power supply (22), a single chip microcomputer (21) and a plurality of servo motors (23) are installed on the furnace body (1), wherein the servo motors (23) correspond to the belt pulleys (18) one by one, wherein a motor shaft (24) is installed on the servo motor (23), wherein the belt pulleys (18) are arranged on the servo motor (23), wherein the motor shaft (24) is ... The pulley (18) is connected to the motor shaft (24); a furnace door (3) is installed at the discharge port (2); the furnace door (3) matches the discharge port (2); the furnace door (3) is detachably connected to the furnace body (1); a pin (27) is installed on the furnace door (3); the pin (27) corresponds to the socket (26); a switch is installed in the socket (26); the switch and the servo motor (23) are both electrically connected to the single-chip microcomputer (21); The single chip computer (21) is electrically connected to a power source (22); a drawer (6) and a plurality of steps (9) are mounted on the feeding trolley (4); the drawer (6) is detachably connected to the feeding trolley (4); the plurality of steps (9) are symmetrically distributed at the left and right ends of the feeding trolley (4); the steps (9) correspond one to one with the discharge trough (8); a second rack (20) is mounted on the step (9); the second rack (20) matches the first rack (19).
2. The annealing furnace for magnetic material production according to claim 1, characterized in that: The feeding trolley (4) is provided with a material rack (5) and a plurality of rollers (7), the material rack (5) being placed at the top of the feeding trolley (4), the rollers (7) being placed at the bottom of the feeding trolley (4), the drawers (6) comprising a plurality of drawers (6), the drawers (6) being evenly distributed from the top to the bottom of the material rack (5), the drawers (6) being detachably connected to the material rack (5), the plurality of rollers (7) being symmetrically distributed with the center of the feeding trolley (4) as a base point, and the rollers (7) being detachably connected to the feeding trolley (4).
3. The annealing furnace for magnetic material production according to claim 2, characterized in that: The material rack (5) is provided with a drawer opening and a plurality of sliding grooves (11), the drawer opening is located at the left end of the material rack (5), and the plurality of sliding grooves (11) are symmetrically distributed at the front and rear ends of the drawer opening. The drawer (6) is provided with an embedding groove (15), and a handle (16) and a plurality of sliding blocks (12) are installed on the drawer (6). The handle (16) is placed in the embedding groove (15), and the handle (16) is detachably connected to the drawer (6). The sliding blocks (12) correspond one to one with the sliding grooves (11).
4. The annealing furnace for magnetic material production according to claim 3, characterized in that: A baffle (10) and a plurality of rotating blocks (14) are mounted on the material rack (5); the baffle (10) is placed at the right end of the material rack (5); the plurality of rotating blocks (14) are symmetrically distributed at the front and rear ends of the drawer opening; the cross-sectional shape of the rotating block (14) is L-shaped; the rotating block (14) is detachably connected to the drawer (6).
5. The annealing furnace for magnetic material production according to claim 1, characterized in that: The servo motor (23) is placed at the front end of the pulley (18); a plurality of rolling bearings are installed on the furnace body (1); the rolling bearings are placed at the rear end of the pulley (18); the rolling bearings correspond to the pulley (18) one by one; the rolling bearings include an inner ring (25) and an outer ring (13); the servo motor (23) and the outer ring (13) are both connected to the furnace body (1); one end of the motor shaft (24) is connected to the servo motor (23); and the other end of the motor shaft (24) passes through the pulley (18) and is connected to the inner ring (25).
6. The annealing furnace for magnetic material production according to claim 1, characterized in that: The rack one (19) and the rack two (20) are both covered with protective sleeves.
Citation Information
Patent Citations
Annealing furnace for magnetic material production
CN210596150U