CN109931780B - Magnetic steel vacuum sintering furnace - Google Patents
Magnetic steel vacuum sintering furnace Download PDFInfo
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- CN109931780B CN109931780B CN201910021622.5A CN201910021622A CN109931780B CN 109931780 B CN109931780 B CN 109931780B CN 201910021622 A CN201910021622 A CN 201910021622A CN 109931780 B CN109931780 B CN 109931780B
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- cooling
- inner container
- magnetic steel
- heating furnace
- sliding block
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 238000005245 sintering Methods 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 70
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005253 cladding Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 description 5
- 239000000110 cooling liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a magnetic steel vacuum sintering furnace, which has the technical scheme that: a magnetic steel vacuum sintering furnace comprises a frame body, wherein the frame body is provided with a placing table for placing magnetic steel, an inner container for keeping the magnetic steel in a vacuum state, and a heating furnace body for heating the magnetic steel, the inner container is vertically arranged and detachably fixed on the placing table, and the heating furnace body is sleeved on the inner container; the frame body is provided with a vacuum mechanism for exhausting air from the inner cavity of the inner container, a lifting mechanism for driving the heating furnace body to move up and down and a cooling mechanism for cooling the magnetic steel. The invention effectively improves the cooling efficiency of the inner container and the magnetic steel.
Description
Technical Field
The invention relates to the field of magnetic steel processing, in particular to a magnetic steel vacuum sintering furnace.
Background
The rare earth permanent magnet material mainly comprises a rare earth-cobalt alloy system (namely RE-Co permanent magnet) and a neodymium iron boron alloy (namely Nd-Fe-B permanent magnet). The sintering of the sintered neodymium iron boron refers to a process of heating a green body to a temperature below the melting point of a powder matrix phase and holding the temperature for a period of time in order to further improve the performance and usability of the magnet, improve the contact property between powders, improve the strength and enable the magnet to have high-performance microstructure characteristics. After the powder is compacted, all the bonding between the particles is mechanical bonding, and the bonding strength is extremely low. If the forming pressure is very high, some of the particles which have been in contact with one another already undergo elastic or plastic deformation, in which case the sample is relatively easy to split and its microstructure is not sufficient to produce high magnetic properties. Sintering is the process of changing the powder combination from green to blank, and sintering equipment is needed in the process.
A vacuum sintering furnace is a furnace for the protective sintering of a heated object in a vacuum environment. The vacuum sintering furnace is complete equipment which enables the hard alloy cutter head and various metal powder pressed bodies to be sintered by utilizing the medium-frequency induction heating principle under the vacuum or protective atmosphere condition. However, the existing vacuum sintering furnace generally adopts an air cooling technology to cool, namely, the air is blown to the vacuum sintering furnace through a fan to cool, but the effect of quickly cooling and controlling the temperature cannot be achieved by adopting the air cooling technology.
Therefore, there is a need for an improved structure that overcomes the above-mentioned deficiencies.
Disclosure of Invention
The invention aims to provide a magnetic steel vacuum sintering furnace, which effectively improves the cooling efficiency of an inner container and magnetic steel.
The technical purpose of the invention is realized by the following technical scheme: a magnetic steel vacuum sintering furnace comprises a frame body, wherein the frame body is provided with a placing table for placing magnetic steel, an inner container for keeping the magnetic steel in a vacuum state, and a heating furnace body for heating the magnetic steel, the inner container is vertically arranged and detachably fixed on the placing table, and the heating furnace body is sleeved on the inner container; the frame body is provided with a vacuum mechanism for exhausting air from the inner cavity of the inner container, a lifting mechanism for driving the heating furnace body to move up and down and a cooling mechanism for cooling the magnetic steel; the vacuum mechanism comprises an air pump fixedly connected with the frame body, a vent pipe arranged between the air pump and the lower end face of the placing table and a control valve arranged on the vent pipe; the lifting mechanism comprises a winch fixedly connected to the upper end surface of the frame body and a steel cable arranged on the winch and used for pulling the heating furnace body to move upwards; the cooling mechanism include horizontal sliding connection in the sliding block of support body, set up in support body and drive the first actuating cylinder that drives that the sliding block slided, two be the symmetry set up in the cooling block of sliding block, set up in the cooling tube of cooling block lateral wall, set up in cooling block and the cooling chamber that supplies cooling liquid to flow in, first actuating cylinder output shaft that drives is the level setting and orientation the inner bag, the cooling block is close to in the inner bag is but the inner bag through the cooling liquid cooling of cooling intracavity.
The invention is further provided with: the cooling block is a semicircular ring, the sliding block is fixedly connected with a rotating shaft which is vertically arranged, the cooling block is hinged to the rotating shaft, and the sliding block is provided with two driving components which drive the cooling block to rotate oppositely and cover the side wall of the inner container.
The invention is further provided with: the driving assembly comprises a second driving cylinder fixedly connected with the sliding block and horizontally arranged, and two connecting rods hinged to the output shaft of the second driving cylinder, wherein one end, far away from the second driving cylinder, of each connecting rod is hinged to the outer side wall of the corresponding cooling block, the rotating axial direction of each connecting rod is vertically arranged, and the output shaft of the second driving cylinder is parallel to the output shaft of the first driving cylinder.
The invention is further provided with: the support body with be provided with between the sliding block right the sliding block carries out the direction subassembly that leads, the direction subassembly include fixed connection in the guide bar of support body, set up in the sliding block supplies the guiding hole that the guide bar wore to establish, guide bar length direction sets up along first actuating cylinder length direction.
The invention is further provided with: the lower end face of the inner container is fixed on the placing table, and a sealing ring is arranged between the lower end face of the inner container and the placing table.
The invention is further provided with: the upper end face of the inner container is fixedly connected with a pull ring which is convenient for pulling the inner container to move upwards.
The invention is further provided with: the heating furnace body with be provided with between the inner bag and conveniently drive the inner bag is along with the coupling assembling that the synchronous reciprocate of heating furnace body.
The invention is further provided with: the connecting assembly comprises a plurality of first connecting rings fixedly connected to the lower end face of the heating furnace body, a plurality of second connecting rings fixedly connected to the side wall of the inner container and in one-to-one correspondence with the first connecting rings, and a plurality of bolts penetrating through the first connecting rings and the second connecting rings, and the first connecting rings are arranged around the heating furnace body in an even arrangement manner.
The invention is further provided with: the connecting assembly comprises a plurality of hooks hinged on the side wall of the inner container and hook grooves arranged on the side wall of the heating furnace body and used for hooking the hooks, and the hooks are uniformly distributed around the inner container.
In conclusion, the invention has the following beneficial effects:
1) the inner cavity of the inner container is pumped by an air pump, so that the magnetic steel placed on the placing table is in a vacuum environment; the heating furnace body is driven by the winch to pull the heating furnace body to move upwards, so that the heating furnace body is separated from the inner container, and the inner container is conveniently cooled by the cooling mechanism; when the first driving cylinder drives the sliding block to move towards the inner container, the cooling block is attached to the side wall of the inner container, and then the cooling liquid flowing into the cooling cavity quickly removes the inner container, so that the magnetic steel is cooled, and the cooling efficiency of the magnetic steel is improved through the cooling liquid;
2) after the first driving cylinder drives the sliding block to move towards the inner container, the output shaft of the second driving cylinder extends, and the output shaft of the second driving cylinder drives the corresponding cooling blocks to rotate oppositely through the two connecting rods, so that the two cooling blocks coat the side wall of the inner container, and the temperature of the inner container can be quickly reduced by coating the side wall of the inner container with the cooling blocks;
3) the sliding direction of the sliding block can be determined by sliding the sliding block relative to the guide rod, and the sliding block is ensured to move towards the inner container;
4) the sealing function can be achieved through the sealing ring, and the inner cavity of the inner container is ensured to be kept in a vacuum state;
5) when the heating furnace body needs to drive the inner container to move upwards synchronously, the bolt is inserted in the first connecting ring and the corresponding second connecting ring, the bolt between the inner container and the placing platform is unscrewed, and when the heating furnace body moves upwards, the inner container is driven to move upwards synchronously, so that the magnetic steel is convenient to take and place;
6) the hook is hooked in the hook groove, so that the inner container can be driven by the heating furnace body to synchronously move up and down.
Drawings
FIG. 1 is a schematic structural diagram of the first embodiment;
FIG. 2 is a cross-sectional view of the first embodiment;
FIG. 3 is a sectional view of the second embodiment;
FIG. 4 is an enlarged view of section A of FIG. 1;
FIG. 5 is a sectional view of the second embodiment;
fig. 6 is an enlarged view of a portion B of fig. 5.
The corresponding part names indicated by the numbers in the figures: 1. a frame body; 2. a placing table; 3. an inner container; 4. heating the furnace body; 5. an air pump; 6. a breather pipe; 7. a control valve; 8. a winch; 9. a steel cord; 10. a sliding block; 11. a first driving cylinder; 12. cooling the block; 13. a cooling chamber; 14. a cooling tube; 15. a rotating shaft; 16. a second driving cylinder; 17. a connecting rod; 18. a guide bar; 19. a guide hole; 20. a seal ring; 21. a first connecting ring; 22. a second connection ring; 23. a bolt; 24. a pull ring; 25. hooking; 26. a hook groove.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.
The first embodiment is as follows: as shown in fig. 1 to 4, the magnetic steel vacuum sintering furnace provided by the invention comprises a frame body 1, wherein a placing table 2 for placing magnetic steel is installed on the frame body 1, an inner container 3 is fixed on the upper end face of the placing table 2 through bolts, the inner container 3 is vertically arranged, an opening is attached to the placing table 2, the magnetic steel placing table 2 is arranged in an inner cavity of the inner container 3, a heating furnace body 4 for heating the inner container 3 and the magnetic steel in the inner container 3 is arranged on the outer side of the inner container 3, and the heating furnace body 4 is connected to the frame body 1 in a sliding mode along the vertical direction. The frame body 1 is provided with a vacuum mechanism for exhausting air from the inner cavity of the inner container 3, a lifting mechanism for driving the heating furnace body 4 to move up and down, and a cooling mechanism for cooling the inner container 3 and the magnetic steel.
The vacuum mechanism includes fixed connection in the aspiration pump 5 of support body 1, and aspiration pump 5 and place 2 terminal surfaces between be connected with breather pipe 6, breather pipe 6 and 3 inner chambers of inner bag intercommunication, breather pipe 6 is provided with the control valve 7 of the 6 switching of control breather pipe. The inner cavity of the inner container 3 is pumped by the air pump 5, so that the magnetic steel placed on the placing table 2 is in a vacuum environment.
The lifting mechanism comprises a winch 8 fixed on the upper end surface of the frame body 1, a steel cable 9 is arranged between the lifting mechanism and the heating furnace body 4, and the steel cable 9 is fixed on the upper end surface of the heating furnace body 4. Therefore, the winch 8 drives the steel cable 9 to pull the heating furnace body 4 to move upwards, so that the heating furnace body 4 is separated from the inner container 3, and the inner container 3 is conveniently cooled by the cooling mechanism.
Cooling mechanism includes along horizontal direction sliding connection in the sliding block 10 of support body 1, sliding block 10 slides towards 3 directions of inner bag to the first actuating cylinder 11 that drives that 1 fixedly connected with of support body drive sliding block 10 slided, sliding block 10 installs two cooling blocks 12 that are the symmetry and set up, and two cooling blocks 12 can laminate in 3 lateral walls of inner bag, and cooling block 12 sets up the cooling chamber 13 that supplies the coolant liquid to flow in, and cooling block 12 is connected with cooling tube 14. Like this when the first back of moving towards 3 directions on the inner bag of drive cylinder 11 drive sliding block 10, cooling block 12 laminates in 3 lateral walls on the inner bag, then goes inner bag 3 through the quick people of coolant liquid that flows into cooling chamber 13 to the magnet steel cooling, and reach improvement magnet steel cooling efficiency through the coolant liquid.
The pivot 15 of the up end fixedly connected with of sliding block 10, pivot 15 are vertical setting to two cooling blocks 12 all articulate in pivot 15, and cooling block 12 is the semicircle annular setting, and sliding block 10 is provided with two cooling block 12 pivoted drive assembly in opposite directions of drive, and through two cooling block 12 of drive assembly drive rotation in opposite directions, thereby make two cooling block 12 cladding live the lateral wall of inner bag 3. Drive assembly includes that fixed connection drives actuating cylinder 16 in the second of skid block 10, and the second drives actuating cylinder 16 output shaft and is on a parallel with the skid block 10 moving direction, and the second drives actuating cylinder 16 output shaft and articulates there are two connecting rods 17, and every connecting rod 17 is kept away from the second and is driven actuating cylinder 16 one end and articulate respectively in the lateral wall of cooling block 12, and the rotating shaft of connecting rod 17 is vertical setting. Like this when first drive actuating cylinder 11 drive sliding block 10 towards the removal of inner bag 3 direction back, drive actuating cylinder 16 output shaft extension through the second, the output shaft that the second drove actuating cylinder 16 drives through two connecting rods 17 and drives corresponding cooling block 12 and rotate in opposite directions to two cooling block 12 cladding live inner bag 3 lateral walls, live inner bag 3 lateral walls through cooling block 12 cladding like this and can reduce the temperature of inner bag 3 fast.
In order to ensure that the sliding block 10 slides towards the direction of the inner container 3, a guide assembly is arranged between the frame body 1 and the sliding block 10, the guide assembly comprises a guide rod 18 fixedly connected to the frame body 1, the guide rod 18 is parallel to the length direction of the output shaft of the first driving cylinder 11, and the sliding block 10 is provided with a guide hole 19 for the guide rod 18 to penetrate. The sliding direction of the sliding block 10 can be determined by sliding the sliding block 10 relative to the guide rod 18, and the sliding block 10 is ensured to move towards the inner container 3.
In order to improve the vacuum performance of the inner cavity of the inner container 3, a sealing ring 20 is arranged between the lower end surface of the inner container 3 and the placing platform 2, and the sealing ring 20 is fixed on the lower end surface of the inner container 3. The sealing ring 20 can play a role in sealing, and the inner cavity of the inner container 3 is ensured to be kept in a vacuum state.
The upper end face of the inner container 3 is fixedly connected with a pull ring 24, so that the inner container 3 can be pulled to move upwards independently through the pull ring 24, and the inner container 3 is convenient to overhaul.
The second embodiment is different from the first embodiment in that: as shown in fig. 5 and 6, the connecting assembly comprises a plurality of hooks 25 hinged on the side wall of the inner container 3, the hooks 25 are uniformly distributed around the inner container 3, the hooks 25 are horizontally arranged in the axial direction of rotation, and hook grooves 26 for hooking the hooks 25 are formed in the side wall of the heating furnace body 4. Therefore, the inner container 3 can be driven to synchronously move up and down by the heating furnace body 4 through the hook 25 hooked in the hook groove 26.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a magnet steel vacuum sintering stove, includes support body (1), support body (1) is provided with and supplies the magnet steel to place platform (2), is used for keeping magnet steel is in vacuum state's inner bag (3), is used for heating furnace body (4) of magnet steel, its characterized in that: the inner container (3) is vertically arranged and detachably fixed on the placing table (2), and the heating furnace body (4) is sleeved on the inner container (3); the frame body (1) is provided with a vacuum mechanism for pumping air into the inner cavity of the inner container (3), a lifting mechanism for driving the heating furnace body (4) to move up and down, and a cooling mechanism for cooling the magnetic steel;
the vacuum mechanism comprises an air suction pump (5) fixedly connected with the frame body (1), a vent pipe (6) arranged between the air suction pump (5) and the lower end face of the placing table (2), and a control valve (7) arranged on the vent pipe (6);
the lifting mechanism comprises a winch (8) fixedly connected to the upper end surface of the frame body (1) and a steel cable (9) arranged on the winch (8) and used for pulling the heating furnace body (4) to move upwards;
cooling mechanism include horizontal sliding connection in sliding block (10) of support body (1), set up in support body (1) and drive sliding block (10) first drive actuating cylinder (11), two be the symmetry set up in cooling block (12) of sliding block (10), set up in cooling tube (14) of cooling block (12) lateral wall, set up in cooling block (12) and cooling chamber (13) that supply the coolant liquid to flow in, first drive actuating cylinder (11) output shaft is the level and sets up and moves towards inner bag (3), cooling block (12) are close to in inner bag (3) are through coolant liquid cooling inner bag (3) in cooling chamber (13).
2. A magnetic steel vacuum sintering furnace according to claim 1, characterized in that: cooling block (12) are the semicircle ring setting, sliding block (10) fixedly connected with is pivot (15) of vertical setting, and two cooling block (12) all articulate in pivot (15), sliding block (10) are provided with the drive two cooling block (12) rotate in opposite directions and the cladding live the drive assembly of inner bag (3) lateral wall.
3. A magnetic steel vacuum sintering furnace according to claim 2, characterized in that: the driving assembly comprises a second driving cylinder (16) fixedly connected to the sliding block (10) and horizontally arranged, and two connecting rods (17) hinged to output shafts of the second driving cylinder (16), each connecting rod (17) is hinged to the outer side wall of the corresponding cooling block (12) at one end, far away from the second driving cylinder (16), of each connecting rod (17), the rotating shaft of each connecting rod (17) is vertically arranged, and the output shafts of the second driving cylinders (16) are parallel to the output shafts of the first driving cylinders (11).
4. A magnetic steel vacuum sintering furnace according to claim 2, characterized in that: support body (1) with it is right to be provided with between sliding block (10) carry out the direction subassembly that leads, the direction subassembly include fixed connection in guide bar (18) of support body (1), set up in sliding block (10) and confession guide hole (19) that guide bar (18) were worn to establish, guide bar (18) length direction sets up along first driving cylinder (11) length direction.
5. A magnetic steel vacuum sintering furnace according to claim 1, characterized in that: the lower end face of the inner container (3) is fixed on the placing table (2), and a sealing ring (20) is arranged between the lower end face of the inner container (3) and the placing table (2).
6. A magnetic steel vacuum sintering furnace according to claim 1, characterized in that: the upper end face of the inner container (3) is fixedly connected with a pull ring (24) which is convenient for pulling the inner container (3) to move upwards.
7. A magnetic steel vacuum sintering furnace according to claim 5, characterized in that: the heating furnace body (4) with be provided with between inner bag (3) and make things convenient for the drive inner bag (3) follow the coupling assembling that heating furnace body (4) reciprocated in step.
8. A magnetic steel vacuum sintering furnace according to claim 6, characterized in that: coupling assembling include a plurality of fixed connection in first go-between (21), a plurality of fixed connection in terminal surface under heating furnace body (4) inner bag (3) lateral wall and with second go-between (22), a plurality of the one-to-one of first go-between (21) wear to locate first go-between (21) and bolt (23) that correspond second go-between (22), first go-between (21) encircle heating furnace body (4) align to grid.
9. A magnetic steel vacuum sintering furnace according to claim 6, characterized in that: the connecting assembly comprises a plurality of hooks (25) hinged to the side wall of the inner container (3), and hook grooves (26) which are arranged on the side wall of the heating furnace body (4) and used for hooking the hooks (25), and the hooks (25) are wound on the inner container (3) and are uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021622.5A CN109931780B (en) | 2019-01-10 | 2019-01-10 | Magnetic steel vacuum sintering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021622.5A CN109931780B (en) | 2019-01-10 | 2019-01-10 | Magnetic steel vacuum sintering furnace |
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| Publication Number | Publication Date |
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| CN109931780A CN109931780A (en) | 2019-06-25 |
| CN109931780B true CN109931780B (en) | 2020-05-01 |
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| CN201910021622.5A Active CN109931780B (en) | 2019-01-10 | 2019-01-10 | Magnetic steel vacuum sintering furnace |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507194B (en) * | 2011-12-01 | 2014-01-22 | 北京动力机械研究所 | High heat flow thermal environment simulation device |
| CN205593367U (en) * | 2016-04-30 | 2016-09-21 | 嘉兴市鹏程磁钢有限公司 | Magnet steel vacuum sintering stove |
| CN106086342B (en) * | 2016-08-09 | 2017-12-26 | 扬州金盛炉业有限公司 | A kind of multi-purpose vacuum stove |
| CN107904662B (en) * | 2017-11-17 | 2020-06-09 | 中国工程物理研究院材料研究所 | Device and method for improving synthesis stability of tellurium-zinc-cadmium polycrystal |
| CN207894226U (en) * | 2018-01-19 | 2018-09-21 | 苏州楚翰真空科技有限公司 | A kind of vertical high-temperature sintering furnace |
| CN108278894A (en) * | 2018-02-07 | 2018-07-13 | 苏州金言来新材料科技有限公司 | A kind of vacuum sintering furnace making self-lubricating workpiece |
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Effective date of registration: 20231107 Address after: No. 8 Jingsan Road, Chongshou Town, Cixi City, Ningbo City, Zhejiang Province, 315300 Patentee after: Cixi Pengcheng Magnetic Steel Co.,Ltd. Address before: 314100 No. 8 Changle Road, Weitang Street, Jiashan County, Jiaxing City, Zhejiang Province Patentee before: JIAXING PENGCHENG MAGNET Co.,Ltd. |