CN113061705A - Magnetic field annealing continuous equipment of iron-based nanocrystalline magnetic core - Google Patents
Magnetic field annealing continuous equipment of iron-based nanocrystalline magnetic core Download PDFInfo
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- CN113061705A CN113061705A CN202110276156.2A CN202110276156A CN113061705A CN 113061705 A CN113061705 A CN 113061705A CN 202110276156 A CN202110276156 A CN 202110276156A CN 113061705 A CN113061705 A CN 113061705A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 184
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 238000000137 annealing Methods 0.000 title claims abstract description 84
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 65
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 239000011261 inert gas Substances 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims description 21
- 239000000919 ceramic Substances 0.000 claims description 18
- 238000005485 electric heating Methods 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 230000005389 magnetism Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 238000004321 preservation Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 239000013589 supplement Substances 0.000 description 9
- 239000011241 protective layer Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000000737 periodic effect Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 230000001429 stepping effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- DWCZIOOZPIDHAB-UHFFFAOYSA-L methyl green Chemical compound [Cl-].[Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC(=CC=1)[N+](C)(C)C)=C1C=CC(=[N+](C)C)C=C1 DWCZIOOZPIDHAB-UHFFFAOYSA-L 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
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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
- C21D1/26—Methods of annealing
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
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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
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
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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
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/03—Amorphous or microcrystalline structure
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Abstract
The invention relates to magnetic field annealing continuous equipment of an iron-based nanocrystalline magnetic core, which comprises a conveying device, a stokehole gas exchange furnace chamber, a magnetizing annealing furnace chamber, a magnetic field device and a furnace rear gas exchange furnace chamber, wherein the stokehole gas exchange furnace chamber, the magnetic field device and the furnace rear gas exchange furnace chamber are sequentially arranged on the conveying device from an inlet direction to an outlet direction, the magnetizing annealing furnace chamber is arranged between the stokehole gas exchange furnace chamber and the furnace rear gas exchange furnace chamber, the magnetizing annealing furnace chamber penetrates through the magnetic field device, the stokehole gas exchange furnace chamber is used for preheating the iron-based nanocrystalline magnetic core entering the chamber under the inert gas protection atmosphere, and the furnace rear gas exchange furnace chamber is used for adjusting and controlling the cooling speed of the iron-based nanocrystalline magnetic core moving in the chamber under the inert gas protection atmosphere. The continuous annealing furnace with the magnetic field device realizes the magnetic field annealing heat treatment production of continuous feeding and continuous discharging, and greatly shortens the heat treatment period of the magnetic annealing of the iron-based nanocrystalline magnetic core product.
Description
Technical Field
The invention relates to the technical field of iron-based nanocrystalline magnetic core processing equipment, in particular to magnetic field annealing continuous equipment for an iron-based nanocrystalline magnetic core.
Background
As a novel metal soft magnetic functional material of an iron-based nanocrystalline which has been developed and applied in recent years, it has been identified as an environment-friendly and energy-saving type "double-green (energy-saving and environment-friendly) new material".
After the material is subjected to heat treatment by a specific annealing process, particularly the heat treatment of the annealing process of applying a magnetic field at a specific temperature, nanometer (10-20nm) ultrafine crystal grains can be efficiently and stably obtained, and the size of the obtained crystal grains is smaller than the magnetic exchange action length, so that the material becomes a soft magnetic alloy material with excellent characteristics of high saturation magnetic induction intensity, high magnetic conductivity, low coercive force, low loss and the like.
The iron-based nanocrystalline magnetic core made of the material, particularly the iron-based nanocrystalline magnetic core subjected to heat treatment by a magnetic field annealing process, is a key component of the current common-mode inductor, a high-frequency transformer, various current transformers, a magnetic amplifier and other magnetoelectric products, and is widely applied to various fields of national power grids, photovoltaic power generation, rail transit, new energy automobiles, wireless charging and the like.
At present, the magnetic field annealing heat treatment of the iron-based nanocrystalline magnetic core still adopts periodic annealing furnace equipment, and is characterized in that a furnace body only has one furnace chamber, and the whole magnetic field annealing treatment can be completed only in the furnace chamber: opening a door, charging, heating, preserving heat, magnetizing, preserving heat, cooling, opening a door, taking materials, and restarting the next magnetic field annealing treatment period after finishing the magnetic field annealing period.
One of the disadvantages is: due to the limitation of the periodic furnace, the whole production presents the defect of periodic waiting in time, the production efficiency is very low, and particularly for the heat treatment production of the magnetizing and annealing of the iron-based nanocrystalline magnetic core product, one production period needs 9 hours and the other production period needs more than 12 hours. The second disadvantage is that: the energy consumption is high, the periodic furnace has the energy consumption of greatly increasing the temperature at the beginning of annealing treatment in a heat treatment production period, and great heat energy loss can be generated in the process of opening the furnace door to take materials after the annealing treatment is finished.
Disclosure of Invention
The technical problem to be solved by the invention is to provide magnetic field annealing continuous equipment for the iron-based nanocrystalline magnetic core, which realizes magnetic field annealing heat treatment production of continuous feeding and continuous discharging through a continuous annealing furnace additionally provided with a magnetic field device, and greatly shortens the heat treatment period of magnetic annealing of iron-based nanocrystalline magnetic core products.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a magnetic field annealing continuous equipment of iron-based nanocrystalline magnetic core, includes conveyor, stokehold gas exchange furnace room, adds magnetism annealing furnace room, magnetic field device and stove back gas exchange furnace room, conveyor on from the import direction toward the export direction in proper order set up stokehold gas exchange furnace room, magnetic field device and stove back gas exchange furnace room, add magnetism annealing furnace room install between stokehold gas exchange furnace room and the stove back gas exchange furnace room, should add magnetism annealing furnace room and run through the magnetic field device, stokehold gas exchange furnace room be used for preheating the iron-based nanocrystalline magnetic core that gets into indoor under the inert gas protection atmosphere, stove back gas exchange furnace room be used for adjusting control the cooling rate of the indoor iron-based nanocrystalline magnetic core that marchs under the inert gas protection atmosphere.
As a supplement to the technical solution of the present invention, the conveying device employs a conveyor belt.
As a supplement to the technical scheme of the invention, the stokehole gas exchange furnace chamber, the magnetizing annealing furnace chamber and the after-furnace gas exchange furnace chamber have the same structure, the furnace chambers respectively comprise a heat insulation layer and a furnace pipe, the outer side of the furnace pipe is wrapped by the heat insulation layer, a heating device is arranged between the heat insulation layer and the outer wall of the furnace pipe, the inner side of the furnace pipe is provided with a temperature measuring thermocouple, the furnace pipe is provided with a channel for the iron-based nanocrystalline magnetic core to advance, two ends of the channel are respectively provided with a sealed heat insulation door, the sealed heat insulation door is an automatic lifting door, and the furnace pipe is provided with an air inlet pipe for filling inert gas into the furnace and an exhaust pipe for exhausting the gas in the furnace.
As a supplement to the technical scheme of the invention, an upper insulating ceramic protective layer and a lower insulating ceramic protective layer are sequentially arranged between the heat-insulating layer and the outer wall of the furnace pipe from outside to inside, and the heating device is arranged between the upper insulating ceramic protective layer and the lower insulating ceramic protective layer.
As a supplement to the technical scheme of the invention, the heating device adopts an electric heating wire, and one end of the electric heating wire is led out through an insulating ceramic threading pipe.
As a supplement to the technical scheme of the invention, connecting flanges are welded at both ends of the furnace pipe and are fixedly installed with the sealed heat-preservation door.
As a supplement to the technical scheme of the invention, the outer side of the heat insulation layer is covered by a stainless steel protection plate.
As a supplement to the technical scheme of the invention, the magnetic field device comprises a magnetic field frame, the magnetic field frame is made of a magnetic conductive material, a hollow cavity for the magnetized annealing furnace chamber to penetrate through is arranged in the magnetic field frame, a permanent magnet block is fixedly arranged on the inner wall of the hollow cavity, and the hollow cavity forms a magnetic field magnetic conductive loop.
As a supplement to the technical scheme of the invention, the magnetic field frame adopts a tightly combined rectangular frame structure formed by splicing four magnetic conduction plates, and two ends of the rectangular frame are fixed by fixing flanges.
As a supplement to the technical scheme of the invention, a plurality of permanent magnets are arranged at the top and the bottom of the hollow cavity, and cooling devices for cooling the permanent magnets are arranged at the top and the bottom of the hollow cavity.
Has the advantages that: the invention relates to a magnetic field annealing continuous device of an iron-based nanocrystalline magnetic core, which has the following advantages:
1. the continuous production of the magnetic field annealing of the iron-based nanocrystalline magnetic core is realized by adopting a multi-furnace chamber structure with inert gas protection as a furnace body and additionally arranging a magnetic field device outside the furnace chamber with the specific temperature of the furnace body, so that the degree of automation is high, and the energy conservation is remarkable;
2. the whole equipment can automatically realize the magnetic field annealing heat treatment production of continuous feeding and continuous discharging, greatly shortens the heat treatment period of the magnetic annealing of the iron-based nanocrystalline magnetic core product, and greatly improves the production efficiency in multiplying power;
3. the invention is a high-efficiency energy-saving device, can effectively avoid energy consumption of a traditional periodic furnace in each heat treatment period, and has remarkable energy-saving effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a process flow diagram of the present invention;
FIG. 3 is a front view of the chamber of the magnetizing annealer of the present invention;
FIG. 4 is a left side view of the chamber of the magnetizing annealer of the present invention;
FIG. 5 is a schematic view of the magnetic field apparatus of the present invention in a front view;
FIG. 6 is a schematic left-side view of the magnetic field apparatus of the present invention;
FIG. 7 is a schematic structural view of the magnetic annealing furnace chamber and the magnetic field device in the front view direction;
FIG. 8 is a schematic structural view of the magnetizing and annealing furnace chamber and the magnetic field device in the left-hand direction.
The figure is as follows: 1. the device comprises a conveying device, 2, a stokehole gas exchange furnace chamber, 3, a magnetizing annealing furnace chamber, 4, a magnetic field device, 5, a furnace rear gas exchange furnace chamber, 6, an automatic control system, 7, a feeding conveying belt, 8, a magnetic core fixing tray, 9, a transmission device, 10, a furnace body support, 11, a closed heat preservation door, 12, an air inlet pipe, 13, an exhaust pipe, 14, an insulating ceramic threading pipe, 15, a connecting flange, 16, a temperature thermocouple, 17, a connecting flange protection plate, 18, a heat insulation layer, 19, an upper insulating ceramic protection layer, 20, a heating device, 21, a lower insulating ceramic protection layer, 22, a furnace pipe, 23, a magnetic fixing flange, 24, a magnetic conduction plate, 25, a permanent magnet block, 26, a cooling device, 27, a cooling device fixing frame, 28, a magnetic field fixing frame, 29, a cooling device, 30, a hollow cavity, 31 and a channel.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the invention relates to magnetic field annealing continuous equipment of an iron-based nanocrystalline magnetic core, which comprises a conveying device 1, a stokehole gas exchange furnace chamber 2, a magnetizing annealing furnace chamber 3, a magnetic field device 4 and a furnace rear gas exchange furnace chamber 5, the conveying device 1 is sequentially provided with a stokehole gas exchange furnace chamber 2, a magnetic field device 4 and a furnace rear gas exchange furnace chamber 5 from the inlet direction to the outlet direction, the magnetizing annealing furnace chamber 3 is arranged between the gas exchange furnace chamber 2 in front of the furnace and the gas exchange furnace chamber 5 behind the furnace, the magnetizing annealing furnace chamber 3 penetrates through a magnetic field device 4, the stokehole gas exchange furnace chamber 2 is used for preheating the iron-based nanocrystalline magnetic core entering the chamber under the protection of inert gas, the furnace rear gas exchange furnace chamber 5 is used for adjusting and controlling the cooling speed of the indoor advancing iron-based nanocrystalline magnetic core in the inert gas protection atmosphere.
In order to prevent the iron-based nanocrystalline magnetic core from moving when the magnetic force of the magnetic field acts, the iron-based nanocrystalline magnetic core is fixed in a special magnetic core fixing tray 8 before the magnetizing and annealing treatment, and the magnetizing and annealing treatment of the iron-based nanocrystalline magnetic core is carried out by taking one tray as a unit to carry out continuous magnetic field magnetizing and annealing treatment.
One side of the inlet of the conveying device 1 is provided with a feeding conveyer belt 7, a magnetic core fixing tray 8 which is fixed with the iron-based nanocrystalline magnetic core in advance is arranged on the feeding conveyer belt 7, the feeding conveyer belt 7 operates in a stepping mode at the conveying speed of the magnetic field annealing continuous furnace, and the magnetic core fixing tray 8 is transported in a stepping mode. The loading conveyor belt 7 transfers the core fixing tray 8 to the next stage conveyor 1 in a stepwise manner.
The conveying device 1 adopts a conveying belt, and the conveying belt is preferably of an annular closed structure so as to meet the requirement of a continuous annealing furnace. One side of the conveying belt is provided with a transmission device 9, and the transmission device 9 comprises a transmission belt unit, a transmission rod shaft unit, a gear box motor and a servo controller unit. The conveyer belt is driven by the transmission device 9 and then runs through all the furnace chambers of the magnetic field annealing furnace body of the whole iron-based nanocrystalline magnetic core continuously and circularly. The conveyer belt is fixedly supported by the furnace body bracket 10.
The structure of the stokehole gas exchange furnace chamber 2, the magnetizing annealing furnace chamber 3 and the structure of the furnace back gas exchange furnace chamber 5 are the same, the furnace chambers respectively comprise a heat insulation layer 18 and a furnace pipe 22, the outer side of the furnace pipe 22 is wrapped by the heat insulation layer 18, a heating device 20 is arranged between the heat insulation layer 18 and the outer wall of the furnace pipe 22, a temperature thermocouple 16 is arranged at a temperature measuring point at the inner side of the furnace pipe 22, the furnace pipe 22 is provided with a channel 31 for the iron-based nanocrystalline magnetic core to move, two ends of the channel 31 are respectively provided with a sealed heat insulation door 11, the sealed heat insulation door 11 is an automatic lifting door, the furnace pipe 22 is provided with an air inlet pipe 12 for filling inert gas into the furnace and an exhaust pipe 13 for exhausting the gas in the furnace, and the inert gas protection effect in the furnace chamber in a gas exchange mode is achieved. The air inlet pipe 12 and the air outlet pipe 13 are both made of stainless steel, and the air inlet pipe 12 and the air outlet pipe 13 extend into the furnace pipe 22 and are welded with the wall of the furnace pipe 22 into a whole.
A sealing heat preservation door 11 is shared between the stokehole gas exchange furnace chamber 2 and the magnetizing annealing furnace chamber 3 and between the magnetizing annealing furnace chamber 3 and the gas exchange furnace chamber 5 behind the furnace, or the sealing heat preservation door 11 can not be shared.
An upper insulating ceramic protective layer 19 and a lower insulating ceramic protective layer 21 are sequentially arranged between the heat-insulating layer 18 and the outer wall of the furnace pipe 22 from outside to inside, and the heating device 20 is arranged between the upper insulating ceramic protective layer 19 and the lower insulating ceramic protective layer 21.
The automatic heating furnace also comprises an automatic control system 6, wherein the heating device 20 adopts an electric heating wire, one end of the electric heating wire is led out through an insulating ceramic threading pipe 14 and is connected with a corresponding electric heating power supply control output unit in the automatic control system 6 in a wiring way, so that the electric heating device of the furnace chamber is formed.
A group of electric heating temperature control areas which can be independently adjusted and controlled is formed by a certain number of independent temperature thermocouples 16 and a certain number of independent heating devices 20, and a plurality of groups of electric heating temperature control areas can be arranged on the furnace chamber according to requirements.
The both ends of stove courage 22 all weld flange 15, this flange 15 is fixed with sealed insulation door 11 installation, stove courage 22 and flange 15 all adopt stainless steel.
The outer side of the heat insulation layer 18 is covered by stainless steel protection plates 17, adjacent stainless steel protection plates 17 are fixed by welding, and the stainless steel protection plates 17 are arranged for protecting the heat insulation layer 18 and enhancing the structural stability.
The magnetic field device 4 comprises a magnetic field frame, the magnetic field frame is made of magnetic conductive materials, a hollow cavity 30 for the magnetizing annealing furnace chamber 3 to penetrate through is arranged inside the magnetic field frame, a permanent magnet 25 is fixedly installed on the inner wall of the hollow cavity 30, and the hollow cavity 30 forms a magnetic field magnetic conductive loop. The permanent magnet 25 is preferably a neodymium iron boron permanent magnet of rectangular parallelepiped shape capable of generating a uniform strong magnetic field and having the same size.
The magnetizing annealing furnace chamber 3 is not in contact with the hollow cavity 30 of the magnetic field device 4, the space distance between the magnetizing annealing furnace chamber 3 and the hollow cavity 30 can meet the requirement of the magnetic field device 4 on the magnetic induction intensity of the magnetic field annealing of the iron-based nanocrystalline magnetic core in the magnetizing annealing furnace chamber 3, the magnetic field device 4 is adjusted to be located at one position of the magnetizing annealing furnace chamber 3, and the magnetizing annealing furnace chamber 3 is fixedly installed with the furnace body support 10 through the connecting flanges 15 at the two ends.
The magnetic field frame adopts a tightly combined rectangular frame structure formed by splicing four magnetic conduction plates 24, and two ends of the rectangular frame are fixed through fixing flanges 23. The magnetic conduction plate 24 is preferably made of ferromagnetic magnetic conduction material, and the fixing flange 23 is made of stainless steel material. The bottom parts of the fixing flanges 23 at the two ends are respectively provided with a stainless steel magnetic field fixing frame 28, and the two ends of the magnetic field device 4 are lifted through the two magnetic field fixing frames 28.
The top and the bottom of the hollow cavity 30 are respectively provided with a plurality of permanent magnets 25, and the top and the bottom of the hollow cavity 30 are respectively provided with a cooling device 26 for cooling the permanent magnets 25. The cooling device 26 is fixed on the hollow cavity 30 through a cooling device fixing frame 27 made of a preferable non-magnetic material, the cooling device 26 completely covers the outer surfaces of all the permanent magnets 25 on the end face where the cooling device 26 is located, the effect of cooling the installed permanent magnets 25 is achieved, and extension pipes led out of the connecting pipe ends of the cooling device 26 are preferably connected through hoses.
The permanent magnets 25 meeting the requirement of the magnetic induction intensity of the magnetizing annealing under a certain quantity are sequentially and tightly arranged between the permanent magnets 25 and are respectively fixed on the top or the bottom of the hollow cavity 30, and the permanent magnets 25 are fixed on the top and the bottom of the hollow cavity 30 through holes in the permanent magnets 25 by using a preferred non-magnetic material screw rod.
Necessary parameters such as the temperature of each furnace chamber electric heating temperature control area corresponding to the continuous magnetizing and annealing heat treatment process of the iron-based nanocrystalline magnetic core, the conveying speed of the conveying belt and the like are set or modified on a human-computer interface of the automatic control system 6, after the system is started to operate, the temperature, the speed and the like of each electric heating area are automatically adjusted and controlled by a computer program, an intelligent temperature control unit and a speed adjusting control unit in the automatic control system 6, and the stepping action of the feeding conveying belt 7 and the opening or closing action of each closed heat preservation door 11 passing through the magnetic core fixing tray 8 are automatically controlled and adjusted.
The working process is as follows (a sealing heat preservation door 11 is respectively arranged between the stokehole gas exchange furnace chamber 2 and the magnetizing annealing furnace chamber 3 and between the magnetizing annealing furnace chamber 3 and the furnace rear gas exchange furnace chamber 5):
A. a magnetic core fixing tray 8 on which the iron-based nanocrystalline magnetic core is fixed in advance waits to be transferred to the next-stage conveying device 1 on the feeding conveying belt 7;
B. a magnetic core fixing tray 8 with iron-based nanocrystalline magnetic cores fixed on the feeding conveyer belt 7 in advance is transferred to the conveyer device 1 by the feeding conveyer belt 7 in a stepping operation mode and is driven by a transmission device 9 to continuously and circularly operate;
after the magnetic core fixing tray 8 is transported, the feeding conveyer belt 7 waits for the transport instruction of the next magnetic core fixing tray 8;
C. when the magnetic core fixing tray 8 synchronously and continuously runs to a position away from the closed heat-insulating door 11 in front of the stokehole gas exchange furnace chamber 2 along with the conveying device 1, the closed heat-insulating door 11 in front is opened, and the magnetic core fixing tray 8 enters the stokehole gas exchange furnace chamber 2 with the inert gas protection function along with the conveying device 1 to continuously run and is preheated at the same time;
at the moment when the magnetic core fixing tray 8 completely enters the stokehole gas exchange furnace chamber 2 along with the conveying device 1, the front closed heat-insulating door 11 is immediately closed;
D. the magnetic core fixing tray 8 continuously advances in the stokehole gas exchange furnace chamber 2 along with the conveying device 1, when the magnetic core fixing tray is away from one position of the closed heat-insulating door 11 behind the stokehole gas exchange furnace chamber 2, the closed heat-insulating door 11 behind the stokehole gas exchange furnace chamber is opened, and the magnetic core fixing tray 8 enters the magnetizing annealing furnace chamber 3 with the inert gas protection function along with the conveying device 1;
E. at the moment when the magnetic core fixing tray 8 completely enters the magnetizing annealing furnace chamber 3 along with the conveying device 1, the closed heat preservation door 11 behind the stokehole ventilation furnace chamber 2 is immediately closed;
when the following closed heat-insulating door 11 is immediately closed, the automatic control system sends a transfer instruction to the feeding conveyer belt 7 at the same time, and the standby feeding conveyer belt 7 repeats the procedure of the step B and transfers the next magnetic core fixing tray 8 to the conveyer device 1;
when the operation starts, the standby feeding conveyer belt 7 repeats the procedure of the step B after receiving the instruction, and transfers the next magnetic core fixing tray 8 to the conveyer 1;
the magnetic core fixing trays 8 transferred to the conveying device 1 are sorted at a certain interval according to the transfer sequence, and enter each treatment process involved in the invention through the continuous operation of the conveying device 1;
the whole process of the current magnetic core fixing tray 8 is only explained, and then the magnetic core fixing trays 8 which are arranged at a certain interval are the whole process of completely continuously repeating and conforming to the magnetic field magnetizing heat treatment of the iron-based nanocrystalline magnetic cores of the current magnetic core fixing tray 8;
F. when the core fixing tray 15 continuously advancing in the magnetizing and annealing furnace chamber 3 passes through the electric heating temperature control region, particularly during the period of passing through the magnetic field electric heating temperature control region formed by the magnetizing and annealing furnace chamber 3 and the magnetic field device 4 in the invention, the iron-based nanocrystalline magnetic core in the magnetic core fixing tray 8 is continuously subjected to the action of the magnetic field superimposed with enough magnetic field intensity while the electric heating and annealing heat treatment is carried out;
G. when the magnetic core fixing tray 8 moves to a position away from the closed heat-preserving door 11 in front of the gas exchange furnace chamber 5 after the furnace along with the conveying device 1 in the magnetizing annealing furnace chamber 3, the closed heat-preserving door 11 in front is opened, and the magnetic core fixing tray 8 moves into the gas exchange furnace chamber 5 after the furnace with the inert gas protection function along with the conveying device 1 to continuously move and is cooled;
at the moment when the magnetic core fixing tray 8 completely enters the gas exchange furnace chamber 5 after the furnace along with the conveying device 1, the front closed heat preservation door 11 is immediately closed;
H. the magnetic core fixing tray 8 continuously advances in the furnace rear gas exchange furnace chamber 5 along with the conveying device 1, when the magnetic core fixing tray is away from one position of the closed heat preservation door 11 behind the furnace rear gas exchange furnace chamber 5, the closed heat preservation door 11 behind the furnace rear gas exchange furnace chamber 5 is opened, and the magnetic core fixing tray 8 passes through the closed heat preservation door 11 behind the furnace rear gas exchange furnace chamber 5 along with the conveying device 1;
I. at the moment when the magnetic core fixing tray 8 completely leaves the closed heat preservation door 11 behind the gas exchange furnace chamber 5 after the furnace along with the conveying device 1, the closed heat preservation door 11 behind the gas exchange furnace chamber 5 after the furnace is immediately closed;
J. at the moment, the iron-based nanocrystalline magnetic core in the magnetic core fixing tray 8 completely comes out of the gas exchange furnace chamber 5 after the conveying device 1 passes through the working process, and then the magnetic field magnetizing annealing process is completed;
the magnetic core fixing tray 8 which is completely discharged from the gas exchange furnace chamber 5 after the furnace along with the conveying device 1 is transferred to a rear-stage blanking device.
Claims (10)
1. A magnetic field annealing continuous equipment of iron-based nanocrystalline magnetic core, characterized by: including conveyor (1), stokehold gas exchange furnace room (2), add magnetism annealing furnace room (3), magnetic field device (4) and stove back gas exchange furnace room (5), conveyor (1) go up and to have set gradually stokehold gas exchange furnace room (2), magnetic field device (4) and stove back gas exchange furnace room (5) from the import direction toward the export orientation, add magnetism annealing furnace room (3) and install between stokehold gas exchange furnace room (2) and stove back gas exchange furnace room (5), should run through magnetic field device (4) with magnetism annealing furnace room (3), stokehold gas exchange furnace room (2) be used for preheating the iron base nanocrystalline magnetic core that gets into indoorly, stove back gas exchange furnace room (5) be used for adjusting control to the indoor iron base nanocrystalline magnetic core cooling rate of marcing.
2. The continuous apparatus for magnetic field annealing of iron-based nanocrystalline cores according to claim 1, characterized in that: the conveying device (1) adopts a conveying belt.
3. The continuous apparatus for magnetic field annealing of iron-based nanocrystalline cores according to claim 1, characterized in that: the structure of the stokehole gas exchange furnace chamber (2), the magnetizing annealing furnace chamber (3) and the furnace back gas exchange furnace chamber (5) is the same, the furnace chambers respectively comprise a heat insulation layer (18) and a furnace pipe (22), the heat insulation layer (18) is wrapped on the outer side of the furnace pipe (22), a heating device (20) is installed between the heat insulation layer (18) and the outer wall of the furnace pipe (22), a temperature thermocouple (16) is installed on the inner side of the furnace pipe (22), the furnace pipe (22) is provided with a channel (31) for the iron-based nanocrystalline magnetic core to advance, a sealing heat insulation door (11) is installed at two ends of the channel (31), the sealing heat insulation door (11) is an automatic lifting door, and the furnace pipe (22) is provided with an air inlet pipe (12) for adding inert gas into the furnace and an exhaust pipe (13) for exhausting gas in the furnace.
4. The continuous magnetic field annealing apparatus for iron-based nanocrystalline cores according to claim 3, characterized in that: an upper insulating ceramic protection layer (19) and a lower insulating ceramic protection layer (21) are sequentially arranged between the heat-insulating layer (18) and the outer wall of the furnace pipe (22) from outside to inside, and the heating device (20) is arranged between the upper insulating ceramic protection layer (19) and the lower insulating ceramic protection layer (21).
5. The continuous magnetic field annealing apparatus for iron-based nanocrystalline cores according to claim 3 or 4, characterized in that: the heating device (20) adopts an electric heating wire, and one end of the electric heating wire is led out through an insulating ceramic threading pipe (14).
6. The continuous magnetic field annealing apparatus for iron-based nanocrystalline cores according to claim 3, characterized in that: and connecting flanges (15) are welded at two ends of the furnace pipe (22), and the connecting flanges (15) are fixedly installed on the sealed heat-insulating door (11).
7. The continuous magnetic field annealing apparatus for iron-based nanocrystalline cores according to claim 3, characterized in that: the outer side of the heat insulation layer (18) is covered by a stainless steel protection plate (17).
8. The continuous apparatus for magnetic field annealing of iron-based nanocrystalline cores according to claim 1, characterized in that: the magnetic field device (4) comprises a magnetic field frame, the magnetic field frame is made of magnetic conducting materials, a hollow cavity (30) for the magnetic annealing furnace chamber (3) to penetrate through is arranged inside the magnetic field frame, a permanent magnet block (25) is fixedly installed on the inner wall of the hollow cavity (30), and the hollow cavity (30) forms a magnetic field magnetic conducting loop.
9. The continuous apparatus for magnetic field annealing of iron-based nanocrystalline cores according to claim 8, characterized in that: the magnetic field frame adopts a tightly combined rectangular frame structure formed by splicing four magnetic conduction plates (24), and two ends of the rectangular frame are fixed through fixing flanges (23).
10. The continuous apparatus for magnetic field annealing of iron-based nanocrystalline cores according to claim 8, characterized in that: the cooling device is characterized in that a plurality of permanent magnets (25) are arranged at the top and the bottom of the hollow cavity (30), and cooling devices (26) used for cooling the permanent magnets (25) are mounted at the top and the bottom of the hollow cavity (30).
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| CN113667797A (en) * | 2021-07-23 | 2021-11-19 | 中国科学院宁波材料技术与工程研究所 | High-saturation magnetic induction amorphous nanocrystalline material and heat treatment device and method thereof |
| CN114883074A (en) * | 2022-05-31 | 2022-08-09 | 佛山市中研非晶科技股份有限公司 | Nanocrystalline magnetic core heat treatment furnace |
| CN116121496A (en) * | 2022-12-27 | 2023-05-16 | 厦门振泰成科技有限公司 | Continuous processing equipment and method for magnetic field annealing of magnetic material |
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