CN114525387A - Magnetic core vacuum heat treatment device and process - Google Patents
Magnetic core vacuum heat treatment device and process Download PDFInfo
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- CN114525387A CN114525387A CN202210365339.6A CN202210365339A CN114525387A CN 114525387 A CN114525387 A CN 114525387A CN 202210365339 A CN202210365339 A CN 202210365339A CN 114525387 A CN114525387 A CN 114525387A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 191
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 49
- 238000001514 detection method Methods 0.000 claims description 13
- 239000000110 cooling liquid Substances 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 19
- 230000002349 favourable effect Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to the technical field of heat treatment furnaces, in particular to a magnetic core vacuum heat treatment device and a magnetic core vacuum heat treatment process, which comprise a furnace pipe, a heating box, a vacuumizing assembly and an air return pipe, wherein a heating cavity for accommodating the furnace pipe is arranged in the heating box, and the heating box can reciprocate along the length direction of the furnace pipe; a first accommodating groove for installing a sealing ring is formed in one end, facing the furnace cover, of the furnace liner body; the furnace cover is provided with a second accommodating groove towards one side of the furnace liner body, the furnace cover is connected with a liquid inlet pipe and a liquid discharge pipe, and the liquid inlet pipe and the liquid discharge pipe are respectively communicated with the second accommodating groove. According to the magnetic core vacuum heat treatment device provided by the technical scheme, the heating box and the furnace pipe are arranged to be of a split structure, so that a cooling device of the conventional vacuum heat treatment furnace is favorably omitted, and the structural processing difficulty of the vacuum heat treatment furnace is reduced; the sealing ring at the opening of the furnace pipe is protected by liquid cooling, so that the sealing performance of the opening of the furnace pipe of the heat treatment device can be effectively ensured, and the processing quality of workpieces is ensured.
Description
Technical Field
The invention relates to the technical field of heat treatment furnaces, in particular to a magnetic core vacuum heat treatment device and process.
Background
The amorphous strip is a novel material with high magnetic permeability, has excellent magnetic performance and wide application prospect, and the magnetic core can show the excellent performance of the magnetic core only by eliminating residual stress in the rapid solidification process through proper heat treatment.
Because the magnetic core is oxidized by the air entering, the product quality is influenced, so that the heat treatment of the amorphous magnetic core mainly comprises two methods, namely, the heat treatment is carried out under the condition of inert gas protection after the amorphous iron core is wound; and secondly, the amorphous iron core is subjected to heat treatment under the condition of high vacuum after being wound. The heat treatment furnace protected by inert gas has a complex structure, is difficult to maintain, is troublesome to operate during heat treatment and has high cost; the nitrogen flow which is driven by a motor and a fan to heat in the heat treatment furnace is used for carrying out heat treatment on the standing amorphous iron core, so that the temperature in the furnace is difficult to be ensured to be uniform, and the heat treatment quality of the amorphous iron cores at different positions in the furnace body is different; and the leakproofness of whole equipment is difficult to obtain guaranteeing, makes nitrogen gas leak easily, makes the air admission equipment in, and the magnetic core can be oxidized in the admission of heat treatment in-process air to cause the influence to the quality of product.
The general vacuum heat treatment furnace is an external heating type vacuum heat treatment furnace, the furnace body structure of the external heating type vacuum heat treatment furnace comprises two main body components, namely a heating body shell and a furnace pipe, the furnace pipe is used for containing a magnetic core to be processed, and the heating body shell is used for heating the furnace pipe after vacuumizing. The existing heating body shell and the furnace pipe are generally of an integrated structure, so that a cooling device needs to be additionally arranged in the heat treatment furnace to cool the heat-treated workpiece in order to accelerate the cooling of the workpiece, so that the structure of the vacuum heat treatment furnace is complex and the operation is inconvenient; in addition, because the air tightness in the furnace pipe has a large influence on the processing quality of the workpiece in the heat treatment process, the rubber ring is generally arranged at the opening of the furnace pipe of the heat treatment furnace to enhance the sealing performance of the opening of the furnace pipe, but the temperature of the heat treatment furnace in the heat treatment process is usually as high as several hundred ℃, and the rubber ring is heated and deformed in long-term use, so that the sealing performance of the opening of the furnace pipe of the heat treatment furnace is greatly reduced, and the processing quality of the workpiece is not favorably ensured.
Disclosure of Invention
The invention aims to provide a magnetic core vacuum heat treatment device, which is beneficial to saving a cooling device of the existing vacuum heat treatment furnace and reducing the structural processing difficulty of the vacuum heat treatment furnace by arranging a heating box and a furnace pipe into a split detachable structure; meanwhile, the sealing ring at the opening of the furnace pipe is subjected to liquid cooling protection, so that the sealing performance of the opening of the furnace pipe of the heat treatment device can be effectively ensured, and the processing quality of workpieces is ensured.
The invention also aims to provide a magnetic core vacuum heat treatment process which is simple in steps, strong in operability and beneficial to ensuring the processing quality of a workpiece so as to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a magnetic core vacuum heat treatment device comprises a furnace pipe, a heating box, a vacuumizing assembly and an air return pipe, wherein a heating cavity for accommodating the furnace pipe is arranged in the heating box, and the heating box can reciprocate along the length direction of the furnace pipe to enable the furnace pipe to be installed and separated from the heating cavity;
the furnace liner comprises a furnace liner body and a furnace cover, an installation cavity for installing a workpiece is arranged in the furnace liner body, an opening of the installation cavity faces the furnace cover, the furnace cover is used for opening and closing the installation cavity, and the vacuumizing assembly and the air return pipe are respectively communicated with the installation cavity;
a first accommodating groove for installing a sealing ring is formed in one end, facing the furnace cover, of the furnace liner body, and the first accommodating groove surrounds the opening edge of the installation cavity; and a second containing groove corresponding to the first containing groove is formed in one surface of the furnace cover facing the furnace liner body, a liquid inlet pipe and a liquid discharge pipe are connected to one surface of the furnace cover opposite to the furnace liner body, and the liquid inlet pipe and the liquid discharge pipe are respectively communicated with the second containing groove.
Preferably, the heating furnace further comprises a moving assembly, and the heating box moves back and forth along the length direction of the furnace pipe through the moving assembly;
the movable assembly comprises a movable rail, movable wheels and a locking piece, the furnace pipe is fixedly installed at any one end of the movable rail, the movable wheels are installed at the bottom of the heating box, the heating box is movably installed on the movable rail through the movable wheels, the locking piece is installed on the movable wheels, and the locking piece is used for locking the rolling of the movable wheels.
Preferably, the furnace pipe body is provided with a limiting ring at one end close to the furnace cover in a protruding mode, the opening of the heating cavity is provided with a heat preservation piece around the heating cavity, and the heat preservation piece abuts against the limiting ring and the heating box.
Preferably, the temperature detection device further comprises a temperature detection assembly, wherein the detection assembly comprises a temperature detector and a temperature display;
the interior of the mounting cavity at least comprises three processing areas arranged in parallel, the top of each processing area is provided with the temperature detector, and the temperature detector is used for detecting the temperature of the processing areas; the temperature display is installed on the top of the limiting ring, electrically connected with the temperature detector and used for displaying the detection temperature of the temperature detector.
Preferably, the vacuum pumping assembly comprises a vacuum pump, a vacuum tube and a vacuum gauge, the vacuum pump is fixedly installed at any one end of the moving track, one end of the vacuum tube is connected with the vacuum pump, the other end of the vacuum tube is connected with the furnace liner body, the vacuum tube is located at one end, close to the furnace cover, of the furnace liner body, the vacuum tube is communicated with the installation cavity, the vacuum gauge is installed on the vacuum pump, the working end of the vacuum gauge is located inside the installation cavity, and the vacuum gauge is used for detecting the pressure condition of the installation cavity.
Preferably, the furnace cover further comprises a plurality of locking assemblies, the locking assemblies are mounted on one surface, facing the furnace cover, of the limiting ring, and the locking assemblies are arranged around the opening of the mounting cavity;
the locking assembly comprises a locking seat and a locking rod, the locking seat is fixedly arranged on one surface, facing the furnace cover, of the limiting ring, and the locking rod is rotatably arranged on the locking seat; the edge of the furnace cover is provided with a locking position corresponding to the locking rod, and the locking rod can be clamped and separated from the locking position.
Preferably, the locking assembly further comprises a positioning ring, the positioning ring is fixedly installed on one surface, facing the furnace cover, of the limiting ring, the positioning ring is correspondingly arranged on the outer side of the locking seat, and the locking rod can be clamped and separated from the positioning ring.
Preferably, the liquid discharging device further comprises a refrigerating assembly, an outlet of the refrigerating assembly is connected with an inlet of the liquid inlet pipe, and an inlet of the refrigerating assembly is connected with an outlet of the liquid discharging pipe.
A magnetic core vacuum heat treatment process uses the magnetic core vacuum heat treatment device, and comprises the following steps:
A. opening the furnace cover, and placing a workpiece into the installation cavity of the furnace pipe body;
B. closing the furnace cover and the air return pipe, injecting cooling liquid into the second accommodating groove through the liquid inlet pipe, and starting the vacuumizing assembly to vacuumize the installation cavity;
C. moving the heating box to enable the furnace pipe to be positioned in the heating cavity, starting the heating box, and carrying out heat treatment on the workpiece;
D. after the heat treatment is finished, closing the heating box, and moving the heating box to enable the furnace pipe to be positioned outside the heating cavity;
E. after the furnace pipe is cooled to room temperature, opening the air return pipe to balance the installation cavity with the atmospheric pressure, and discharging the cooling liquid out of the second accommodating groove through the liquid discharge pipe;
F. and opening the furnace cover and taking out the workpiece.
Preferably, the temperature in the furnace of the furnace pipe is increased to 250-800 ℃ from room temperature, and the temperature is kept for 30-1000 min.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
1. a heating cavity for accommodating the furnace pipe is arranged in the heating box, and the heating box can reciprocate along the length direction of the furnace pipe, so that the furnace pipe can be installed in and separated from the heating cavity; when needs carry out cooling to the stove courage, portable heating cabinet makes the stove courage break away from the heating chamber, is favorable to accelerating the thermal scattering and disappearing of stove courage, and furtherly, the ambient temperature who reduces around the stove courage still is favorable to further accelerating the thermal scattering and disappearing of stove courage, compares and has played and set up other cooling device in vacuum heat treatment furnace, and the cooling method of stove courage in this scheme more is favorable to reducing vacuum heat treatment device's the structure processing degree of difficulty.
2. The furnace cover is provided with a second accommodating groove corresponding to the first accommodating groove on one surface facing the furnace liner body, the second accommodating groove is used for filling cooling liquid, and the second accommodating groove has two functions; secondly, the cooling liquid can also play the liquid seal effect to the stove courage opening, further ensures to form vacuum environment in the heat treatment in-process installation cavity, ensures product quality.
Drawings
FIG. 1 is a schematic structural diagram of a magnetic core vacuum heat treatment apparatus in step A of a magnetic core vacuum heat treatment process according to the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
FIG. 3 is a schematic structural diagram of a magnetic core vacuum heat treatment apparatus in step B of the magnetic core vacuum heat treatment process according to the present invention.
FIG. 4 is a schematic structural diagram of a magnetic core vacuum heat treatment apparatus in step C of the magnetic core vacuum heat treatment process according to the present invention.
Wherein: the furnace container 1, the furnace container body 11, the limiting ring 111, the furnace cover 12, the second containing groove 121, the liquid inlet pipe 122, the liquid discharge pipe 123, the locking position 124, the installation cavity 101, the heating box 2, the heat preservation part 21, the vacuumizing assembly 3, the vacuum pump 31, the vacuum pipe 32, the moving assembly 4, the moving track 41, the moving wheel 42, the temperature detection assembly 5, the temperature detector 51, the temperature display 52, the locking assembly 6, the locking seat 61, the locking rod 62 and the positioning ring 63.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The technical scheme provides a magnetic core vacuum heat treatment device which comprises a furnace pipe 1, a heating box 2, a vacuumizing assembly 3 and an air return pipe, wherein a heating cavity for accommodating the furnace pipe 1 is arranged in the heating box 2, and the heating box 2 can reciprocate along the length direction of the furnace pipe 1, so that the furnace pipe 1 can be installed in and separated from the heating cavity;
the furnace pipe 1 comprises a furnace pipe body 11 and a furnace cover 12, wherein an installation cavity 101 for installing a workpiece is arranged inside the furnace pipe body 11, an opening of the installation cavity 101 faces the furnace cover 12, the furnace cover 12 is used for opening and closing the installation cavity 101, and the vacuumizing assembly 3 and the air return pipe are respectively communicated with the installation cavity 101;
a first accommodating groove for installing a sealing ring is formed in one end, facing the furnace cover 12, of the furnace liner body 11, and the first accommodating groove surrounds the opening edge of the installation cavity 101; a second containing groove 121 corresponding to the first containing groove is formed in one surface, facing the furnace liner body 11, of the furnace cover 12, a liquid inlet pipe 122 and a liquid outlet pipe 123 are connected to one surface, facing away from the furnace liner body 11, of the furnace cover 12, and the liquid inlet pipe 122 and the liquid outlet pipe 123 are respectively communicated with the second containing groove 121.
The general vacuum heat treatment furnace is an external heating type vacuum heat treatment furnace, the furnace body structure of the external heating type vacuum heat treatment furnace comprises a heating body shell and a furnace pipe, the furnace pipe is used for containing a magnetic core to be processed, and the heating body shell is used for heating the furnace pipe after vacuumizing. The existing heating body shell and the furnace pipe are generally of an integrated structure, so that a cooling device needs to be additionally arranged in the heat treatment furnace to cool the heat-treated workpiece in order to accelerate the cooling of the workpiece, so that the structure of the vacuum heat treatment furnace is complex and the operation is inconvenient; in addition, because the air tightness in the furnace pipe has a large influence on the processing quality of the workpiece in the heat treatment process, the rubber ring is generally arranged at the opening of the furnace pipe of the heat treatment furnace to enhance the sealing performance of the opening of the furnace pipe, but the temperature of the heat treatment furnace in the heat treatment process is usually as high as several hundred ℃, and the rubber ring is heated and deformed in long-term use, so that the sealing performance of the opening of the furnace pipe of the heat treatment furnace is greatly reduced, and the processing quality of the workpiece is not favorably ensured.
In order to solve the above problems, the present technical solution provides a magnetic core vacuum heat treatment apparatus, as shown in fig. 1-4, including a furnace 1, a heating box 2, a vacuum pumping assembly 3 and an air return pipe (not shown in the drawings), wherein a heating cavity for accommodating the furnace 1 is arranged inside the heating box 2, and the heating box 2 can reciprocate along the length direction of the furnace 1, so that the furnace 1 can be installed in and detached from the heating cavity; when the furnace pipe 1 needs to be cooled, the movable heating box 2 enables the furnace pipe 1 to be separated from the heating cavity, so that the heat dissipation of the furnace pipe 1 is accelerated, further, the ambient temperature around the furnace pipe 1 is reduced, the heat dissipation of the furnace pipe 1 is further accelerated, and compared with the case that an additional cooling device is arranged in the vacuum heat treatment furnace, the cooling method of the furnace pipe 1 in the scheme is more favorable for reducing the structural processing difficulty of the vacuum heat treatment device.
Specifically, stove courage 1 in this scheme includes stove courage body 11 and bell 12, and the inside of stove courage body 11 is provided with the installation cavity 101 that is used for installing the work piece, and the opening of installation cavity 101 towards bell 12, and bell 12 is used for opening and closing installation cavity 101, and evacuation subassembly 3 and muffler communicate each other with installation cavity 101 respectively, evacuation subassembly 3 is used for carrying out evacuation processing to installation cavity 101, and the muffler is used for making the air admission installation cavity 101, keeps the inside and outside atmospheric pressure balance of installation cavity 101.
More specifically, a first accommodating groove (not shown) for installing a sealing ring (not shown) is formed in one end of the furnace pipe body 11 facing the furnace cover 12, the first accommodating groove surrounds the opening edge of the installation cavity 101, and the sealing ring is pressed between the furnace pipe body 11 and the furnace cover 12 to improve the sealing performance of the opening of the furnace pipe 1; one side of the furnace cover 12 facing the furnace container body 11 is provided with a second accommodating groove 121 corresponding to the first accommodating groove, the second accommodating groove 121 is used for filling cooling liquid, one side of the furnace cover 12 facing away from the furnace container body 11 is connected with a liquid inlet pipe 122 and a liquid outlet pipe 123, and the liquid inlet pipe 122 and the liquid outlet pipe 123 are respectively communicated with the second accommodating groove 121, so that the cooling liquid enters the second accommodating groove 121 through the liquid inlet pipe 122 and is discharged out of the second accommodating groove 121 through the liquid outlet pipe 123. In the scheme, the second accommodating groove 121 has two functions, namely, firstly, because the temperature of the vacuum heat treatment device is too high in the heat treatment process, in order to avoid the sealing ring from being heated and deformed, the cooling liquid is used for cooling the sealing ring, so that the protection effect is achieved, and the reduction of the sealing performance of the sealing ring can be effectively avoided; secondly, the cooling liquid can also play a liquid seal role in the opening of the furnace pipe 1, so that a vacuum environment is further ensured to be formed in the installation cavity 101 in the heat treatment process, and the product quality is ensured.
In the present embodiment, the heating box 2 is provided with conventional components for implementing a heating function, such as a heating wire, and is not limited herein.
Further, the heating furnace comprises a moving assembly 4, and the heating box 2 is reciprocated along the length direction of the furnace pipe 1 through the moving assembly 4;
the moving assembly 4 comprises a moving rail 41, a moving wheel 42 and a locking piece, the furnace pipe 1 is fixedly installed at any one end of the moving rail 41, the moving wheel 42 is installed at the bottom of the heating box 2, the heating box 2 is movably installed on the moving rail 41 through the moving wheel 42, the locking piece is installed on the moving wheel 42, and the locking piece is used for locking the rolling of the moving wheel 42.
In one embodiment of the technical scheme, the heating box 2 is reciprocated along the length direction of the furnace pipe 1 by using the moving assembly 4; specifically, the moving assembly 4 includes a moving rail 41, a moving wheel 42 and a locking member (not shown in the figure), the furnace 1 is fixedly mounted at any end of the moving rail 41, the moving wheel 42 is mounted at the bottom of the heating box 2, and the heating box 2 is movably mounted on the moving rail 41 through the moving wheel 42, so that the structure is simple and the performance is reliable. In addition, the moving wheel 42 is installed with a locking member for locking the rolling of the moving wheel 42, and when the heating cabinet 2 is moved to the working position or the non-working position, the rolling of the moving wheel 42 is locked by the locking member, thereby fixing the heating cabinet 2 at the current position.
More specifically, a limiting ring 111 is protrudingly arranged at one end of the furnace body 11 close to the furnace cover 12, an opening of the heating cavity is surrounded by a heat preservation member 21, and the heat preservation member 21 is abutted between the limiting ring 111 and the heating box 2.
In an embodiment of the present technical solution, a limiting ring 111 is protrudingly disposed at one end of the furnace body 11 close to the furnace cover 12, and the arrangement of the limiting ring 111 is beneficial to limiting the relative position of the furnace 1 in the heating box 2, and is beneficial to improving the operability of technicians; in addition, the opening of heating chamber is around being provided with heat preservation 21, and heat preservation 21 supports between spacing ring 111 and heating cabinet 2, is favorable to avoiding the heat in heating cabinet 2 to scatter and disappear from heating chamber opening part in the heat treatment process, ensures that furnace pipe 1 heats to required treatment temperature.
It should be noted that the heat insulating member 21 in this embodiment may be a conventional component for realizing heat insulating performance, such as heat insulating cotton.
Further, the temperature detection assembly 5 is further included, and the detection assembly 5 includes a temperature detector 51 and a temperature display 52;
the inside of the mounting cavity 101 at least comprises three processing areas arranged in parallel, the top of each processing area is provided with the temperature detector 51, and the temperature detector 51 is used for detecting the temperature of the processing area; the temperature display 52 is mounted on the top of the limiting ring 111, the temperature displays 52 are electrically connected to the temperature detector 51, and the temperature display 52 is used for displaying the detection temperature of the temperature detector 51.
In order to improve the controllability of the magnetic core vacuum heat treatment device, the heat treatment device is provided with a temperature detection assembly 5 for realizing temperature detection; specifically, the inside of the installation cavity 101 at least includes three processing areas arranged in parallel, and the top of each processing area is provided with the temperature detector 51, so that a technician can conveniently master the temperature conditions of each processing area in the installation cavity 101 through the temperature display 52, and adjust the relevant working parameters of the heating box 2 according to the temperature conditions.
More specifically, the vacuum pumping assembly 3 includes a vacuum pump 31, a vacuum tube 32 and a vacuum gauge, the vacuum pump 31 is fixedly installed at any end of the moving rail 41, one end of the vacuum tube 32 is connected to the vacuum pump 31, the other end of the vacuum tube 32 is connected to the furnace body 11, the vacuum tube 32 is located at one end of the furnace body 11 close to the furnace lid 12, the vacuum tube 32 is communicated with the installation cavity 101, the vacuum gauge is installed at the vacuum pump 31, the working end of the vacuum gauge is located inside the installation cavity 101, and the vacuum gauge is used for detecting the pressure condition of the installation cavity 101.
In order to further improve the controllability of the magnetic core vacuum heat treatment device, the scheme is that a vacuum gauge (not shown in the figure) for realizing pressure detection is arranged in the heat treatment device; specifically, the one end and the vacuum pump 31 of vacuum tube 32 are connected, and the other end and the stove courage body 11 of vacuum tube 32 are connected for carry out evacuation processing to installation cavity 101, and vacuum tube 32 is located the one end that is close to bell 12 in the stove courage body 11, are favorable to guaranteeing that each processing region's in the installation cavity 101 is complete in structure, can effectively avoid the air directly to get into each processing region to influence the thermal treatment processingquality of work piece.
Further, the furnace cover further comprises a locking assembly 6, wherein the locking assembly 6 is mounted on a surface of the limiting ring 111 facing the furnace cover 12, and a plurality of locking assemblies 6 are arranged around the opening of the mounting cavity 101;
the locking assembly 6 comprises a locking seat 61 and a locking rod 62, the locking seat 61 is fixedly arranged on one surface of the limiting ring 111 facing the furnace cover 12, and the locking rod 62 is rotatably arranged on the locking seat 61; the edge of the furnace cover 12 is provided with a locking position 124 corresponding to the locking rod 62, and the locking rod 62 can be clamped and separated from the locking position 124.
In one embodiment of the technical scheme, the opening of the furnace pipe 1 is sealed by the locking assembly 6, so that the sealing performance of the furnace pipe 1 is improved, and the quality of a finished product of a workpiece is ensured; further, the locking assembly 6 comprises a locking seat 61 and a locking rod 62, the locking seat 61 is fixedly arranged on one surface of the limiting ring 111 facing the furnace cover 12, and the locking rod 62 is rotatably arranged on the locking seat 61; the edge of the furnace cover 12 is provided with a locking position 124 corresponding to the locking rod 62, and the locking rod 62 can be clamped and separated from the locking position 124, so that the furnace cover 12 is closed and opened, and the furnace cover is simple in structure and reliable in performance.
More specifically, the locking assembly 6 further includes a positioning ring 63, the positioning ring 63 is fixedly mounted on a surface of the limiting ring 111 facing the furnace cover 12, the positioning ring 63 is correspondingly disposed on an outer side of the locking seat 61, and the locking rod 62 can be clamped and separated from the positioning ring 63.
In a preferred embodiment of the present invention, the locking assembly 6 further includes a positioning ring 63, the positioning ring 63 is fixedly installed on a surface of the limiting ring 111 facing the furnace cover 12, the positioning ring 63 is correspondingly disposed on an outer side of the locking seat 61, the locking rod 62 can be clamped and separated from the positioning ring 63, and the positioning ring 63 is favorable for positioning the locking rod 62 under the condition that the opening of the furnace shell 1 is open, so as to prevent the locking rod 62 from blocking the entrance of the furnace shell 1, thereby affecting the feeding speed of the workpiece.
Further, the cooling device further comprises a cooling component, an outlet of the cooling component is connected with an inlet of the liquid inlet pipe 122, and an inlet of the cooling component is connected with an outlet of the liquid outlet pipe 123.
In a preferred embodiment of the present disclosure, the heat treatment apparatus further includes a refrigeration assembly (not shown in the figure), an outlet of the refrigeration assembly is connected to an inlet of the liquid inlet pipe 122, an inlet of the refrigeration assembly is connected to an outlet of the liquid outlet pipe 123, the refrigeration assembly can be used to perform secondary refrigeration and cooling on the heated coolant, and the coolant that is cooled and cooled again can be used in a heat treatment process of the next heat treatment apparatus, so as to facilitate recycling of the coolant.
A magnetic core vacuum heat treatment process uses the magnetic core vacuum heat treatment device, and comprises the following steps:
A. opening the furnace cover 12, and placing a workpiece into the installation cavity 101 in the furnace pipe body 11;
B. closing the furnace cover 12 and the air return pipe, injecting cooling liquid into the second accommodating groove 121 through the liquid inlet pipe 122, and starting the vacuumizing assembly 3 to vacuumize the installation cavity 101;
C. moving the heating box 2 to enable the furnace pipe 1 to be positioned in the heating cavity, starting the heating box 2, and carrying out heat treatment on the workpiece;
D. after the heat treatment is finished, closing the heating box 2, and moving the heating box 2 to enable the furnace pipe 1 to be positioned outside the heating cavity;
E. after the furnace pipe 1 is cooled to room temperature, the air return pipe is opened to balance the installation cavity 101 with the atmospheric pressure, and the cooling liquid is discharged out of the second accommodating groove 121 through the liquid discharge pipe 123;
F. the furnace cover 12 is opened and the workpiece is taken out.
This technical scheme has still provided a magnetic core vacuum heat treatment process who uses above-mentioned magnetic core vacuum heat treatment device, and the step is simple, and strong operability is favorable to promoting heat treatment device's sealing performance, effectively ensures the processingquality of work piece.
In step C, the temperature in the furnace of the furnace pipe 1 is raised from room temperature to 250-800 ℃ and kept for 30-1000 min.
In a preferred embodiment of the technical scheme, the heat treatment process of the workpiece comprises a heating process and a heat preservation process, and the heating temperature and the heat preservation time in the furnace are preferably selected and limited, so that the magnetic conductivity of the workpiece is favorably improved, and the consistency of the performance of the workpiece in each processing area in the installation cavity 101 is ensured.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, and these embodiments will fall within the scope of the present invention.
Claims (10)
1. A magnetic core vacuum heat treatment device is characterized in that: the heating box can reciprocate along the length direction of the furnace, so that the furnace can be installed and separated from the heating cavity;
the furnace liner comprises a furnace liner body and a furnace cover, an installation cavity for installing a workpiece is arranged in the furnace liner body, an opening of the installation cavity faces the furnace cover, the furnace cover is used for opening and closing the installation cavity, and the vacuumizing assembly and the air return pipe are respectively communicated with the installation cavity;
a first accommodating groove for installing a sealing ring is formed in one end, facing the furnace cover, of the furnace liner body, and the first accommodating groove surrounds the opening edge of the installation cavity; and a second containing groove corresponding to the first containing groove is formed in one surface of the furnace cover facing the furnace liner body, a liquid inlet pipe and a liquid discharge pipe are connected to one surface of the furnace cover opposite to the furnace liner body, and the liquid inlet pipe and the liquid discharge pipe are respectively communicated with the second containing groove.
2. The magnetic core vacuum heat treatment apparatus according to claim 1, wherein: the heating box moves back and forth along the length direction of the furnace pipe through the moving assembly;
the moving assembly comprises a moving track, a moving wheel and a locking piece, the furnace pipe is fixedly installed at any one end of the moving track, the moving wheel is installed at the bottom of the heating box, the heating box is movably installed in the moving track through the moving wheel, the moving wheel is installed with the locking piece, and the locking piece is used for locking the rolling of the moving wheel.
3. A magnetic core vacuum heat treatment apparatus according to claim 1, wherein: the furnace pipe body is close to one end of the furnace cover and is provided with a limiting ring in a protruding mode, the opening of the heating cavity is provided with a heat preservation piece in a surrounding mode, and the heat preservation piece supports against the limiting ring and the heating box.
4. A magnetic core vacuum heat treatment apparatus according to claim 3, wherein: the temperature detection assembly comprises a temperature detector and a temperature display;
the interior of the mounting cavity at least comprises three processing areas arranged in parallel, the top of each processing area is provided with the temperature detector, and the temperature detector is used for detecting the temperature of the processing areas; the temperature display is installed on the top of the limiting ring, electrically connected with the temperature detector and used for displaying the detection temperature of the temperature detector.
5. The magnetic core vacuum heat treatment apparatus according to claim 4, wherein: the vacuum pumping assembly comprises a vacuum pump, a vacuum tube and a vacuum gauge, the vacuum pump is fixedly installed at any one end of the moving track, one end of the vacuum tube is connected with the vacuum pump, the other end of the vacuum tube is connected with the furnace liner body, the vacuum tube is located at one end, close to the furnace cover, of the furnace liner body, the vacuum tube is communicated with the installation cavity, the vacuum gauge is installed on the vacuum pump, the working end of the vacuum gauge is located inside the installation cavity, and the vacuum gauge is used for detecting the pressure condition of the installation cavity.
6. A magnetic core vacuum heat treatment apparatus according to claim 3, wherein: the furnace cover is characterized by further comprising a plurality of locking assemblies, wherein the locking assemblies are mounted on one surface, facing the furnace cover, of the limiting ring, and the locking assemblies are arranged around the opening of the mounting cavity;
the locking assembly comprises a locking seat and a locking rod, the locking seat is fixedly arranged on one surface, facing the furnace cover, of the limiting ring, and the locking rod is rotatably arranged on the locking seat; the edge of the furnace cover is provided with a locking position corresponding to the locking rod, and the locking rod can be clamped and separated from the locking position.
7. The magnetic core vacuum heat treatment apparatus according to claim 6, wherein: the locking assembly further comprises a positioning ring, the positioning ring is fixedly installed on one surface, facing the furnace cover, of the limiting ring, the positioning ring is correspondingly arranged on the outer side of the locking seat, and the locking rod can be clamped and separated from the positioning ring.
8. The magnetic core vacuum heat treatment apparatus according to claim 1, wherein: the liquid inlet pipe is connected with the liquid outlet pipe through a liquid inlet pipe, and the liquid outlet pipe is connected with the outlet of the liquid outlet pipe through a liquid outlet pipe.
9. A magnetic core vacuum heat treatment process, characterized in that, the magnetic core vacuum heat treatment device of any claim 1 to 8 is used, comprising the following steps:
A. opening the furnace cover, and placing a workpiece into the installation cavity of the furnace pipe body;
B. closing the furnace cover and the air return pipe, injecting cooling liquid into the second accommodating groove through the liquid inlet pipe, and starting the vacuumizing assembly to vacuumize the installation cavity;
C. moving the heating box to enable the furnace pipe to be positioned in the heating cavity, starting the heating box, and carrying out heat treatment on the workpiece;
D. after the heat treatment is finished, closing the heating box, and moving the heating box to enable the furnace pipe to be positioned outside the heating cavity;
E. after the furnace pipe is cooled to room temperature, opening the air return pipe to balance the installation cavity with the atmospheric pressure, and discharging the cooling liquid out of the second accommodating groove through the liquid discharge pipe;
F. and opening the furnace cover and taking out the workpiece.
10. The vacuum thermal processing process for a magnetic core according to claim 9, wherein: and C, raising the temperature in the furnace of the furnace pipe from room temperature to 250-800 ℃, and keeping the temperature for 30-1000 min.
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