CN110935881A - Amorphous nanocrystalline powder baking equipment and use its magnetic powder core production line - Google Patents
Amorphous nanocrystalline powder baking equipment and use its magnetic powder core production line Download PDFInfo
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- CN110935881A CN110935881A CN201911402276.1A CN201911402276A CN110935881A CN 110935881 A CN110935881 A CN 110935881A CN 201911402276 A CN201911402276 A CN 201911402276A CN 110935881 A CN110935881 A CN 110935881A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/002—Making metallic powder or suspensions thereof amorphous or microcrystalline
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/048—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by pulverising a quenched ribbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
Abstract
The invention provides an amorphous nanocrystalline powder baking device, which comprises an installation support, wherein a heating furnace chamber for heating and baking amorphous nanocrystalline powder is arranged in the installation support, and the heating furnace chamber is connected with a first rotary driving part for driving the heating furnace chamber to rotate relative to the installation support; the gas outlet end of the ventilation device extends into the heating furnace cavity; the magnetic powder core production line applying the baking device is also included; the amorphous nanocrystalline powder baking device can be applied to the corresponding insulating coating technology of amorphous nanocrystalline powder, and meets the application requirements of the corresponding finished powder preparation process.
Description
Technical Field
The invention relates to the technical field of soft magnetic alloy metallurgy, in particular to an amorphous nanocrystalline powder baking device and a magnetic powder core production line using the same.
Background
The amorphous material has high saturation magnetic induction, high magnetic conductivity, low coercive force, low high-frequency loss, good strong hardness, wear resistance, corrosion resistance, good temperature and environmental stability and the like, has excellent comprehensive performance, replaces permalloy, silicon steel and ferrite, is applied to power electronic technology, shows the characteristics of small volume, high efficiency, energy conservation and the like, and has the optimal cost performance ratio in all metal soft magnetic materials.
The insulating coating is a key technology in the preparation process of amorphous and nanocrystalline magnetic powder cores, the performance of the insulating coating is an important factor influencing the high-frequency loss of the magnetic powder cores, and if the insulating coating is incomplete or damaged, the eddy current loss among magnetic powder particles is increased sharply, so that the high-frequency loss of the magnetic powder cores is increased.
In the application of the prior art, an acidic solution is usually adopted for corrosive insulating coating treatment in the insulating coating process, and the acidic solution is usually diluted by volatile organic matters, so that the cost is increased and the environment is damaged; and the reaction control difficulty in the corrosion process is higher, and the change of the amorphous structure on the surface of the powder particles caused by nonuniform coating and excessive local heat release of the powder particles is easy to occur. Meanwhile, the erosion of the powder particles can cause the adverse effects of the reduction of the powder permeability and the increase of the hysteresis loss.
Disclosure of Invention
The invention aims to provide an amorphous nanocrystalline powder baking device and a magnetic powder core production line applying the same to overcome the defects of the prior art.
The amorphous nanocrystalline powder baking device comprises an installation support, wherein a heating furnace chamber for heating and baking amorphous nanocrystalline powder is arranged in the installation support, and the heating furnace chamber is connected with a first rotary driving part for driving the heating furnace chamber to rotate relative to the installation support; the gas outlet end of the ventilation device extends into the heating furnace cavity.
Furthermore, the gas output end of the ventilation device is provided with a ventilation pipe in an extending mode so as to extend into the heating furnace cavity, and the ventilation pipe is provided with a gas outlet hole used for discharging gas corresponding to the position in the heating furnace cavity.
Furthermore, the vent pipe and the heating furnace chamber are coaxially arranged, and the first rotation driving part drives the heating furnace chamber to rotate around the central shaft of the heating furnace chamber relative to the mounting bracket and the vent pipe.
Furthermore, the breather pipe is provided with a plurality of stirring baffles in a radial extending manner corresponding to the position in the heating furnace cavity.
Furthermore, the vent pipe is connected with a second rotation driving part, and the second rotation driving part drives the vent pipe to rotate around the central axis of the vent pipe.
Furthermore, a plurality of material turning partition plates extend radially from the inner side wall of the heating furnace cavity.
Further, the heating furnace chamber is arranged in a cylindrical barrel shape, the heating furnace chamber is arranged in an inclined manner along the axial direction relative to the horizontal plane, and a cavity outlet is formed in the inclined lower side of the heating furnace chamber.
Furthermore, the mounting bracket is provided with a material receiving funnel corresponding to the position of the cavity outlet, and a discharging end of the material receiving funnel is provided with a discharging storage barrel.
Furthermore, the inclined upper side of the heating furnace chamber is provided with a cavity inlet, the mounting bracket is provided with a feeding storage barrel corresponding to the cavity inlet, and the discharge end of the feeding storage barrel is connected to the position of the cavity inlet in a matching manner through a feed plate.
Further, the amorphous nanocrystalline powder baking device further comprises an ultrasonic vibrator, and the ultrasonic vibrator outputs ultrasonic waves in the heating furnace cavity.
The magnetic powder core production line comprises the amorphous nanocrystalline powder baking device, the stirring device, the forging device, the sintering device, the annealing device, the curing device and the coating processing device.
Further, the coating processing device is in driving linkage with the amorphous nanocrystalline powder baking device.
Further, coating processing apparatus includes the peg, the peg includes the body of rod, be provided with a plurality of recess positions that are used for holding the work piece on the body of rod.
Further, the coating treatment device also comprises a rod rotation driving part for driving the hanging rod to do self-rotation motion, and the rod rotation driving part is in driving linkage with the first rotation driving part.
Further, the coating treatment device also comprises a heat exchange part for outputting a heat exchange medium, a circulating flow channel for circulating the heat exchange medium is formed in the rod body, and the heat exchange part is communicated with the circulating flow channel; and a heat transfer path is arranged between the circulating flow channel and the groove position.
Furthermore, the rod body comprises an assembling end for sleeving and installing materials and a heat exchange end for inputting heat exchange media.
Furthermore, the mounting end is conical, and the outer diameter of the mounting end is gradually decreased away from the heat exchange end.
Further, an inner cavity is arranged in the hollow rod body, a liquid inlet pipe is arranged in the inner cavity, and a liquid inlet flow channel is arranged in the liquid inlet pipe; a liquid outlet flow passage is arranged between the outer side of the liquid inlet pipe and the inner cavity, and the liquid inlet pipe is provided with a plurality of circulating liquid ports communicated with the liquid inlet flow passage and the liquid outlet flow passage; the heat exchange end is provided with a liquid inlet communicated with the liquid inlet flow channel and a liquid outlet communicated with the liquid outlet flow channel.
Furthermore, the groove position is provided with at least two, each the recess is located the equidistant equipartition of body of rod.
The invention has the beneficial effects that:
the amorphous nanocrystalline powder baking device can be applied to the corresponding insulating coating technology of amorphous nanocrystalline powder, and meets the application requirements of the corresponding finished powder preparation process.
The production line of the magnetic powder core is arranged, so that the preparation requirements of various different coating powders in the preparation flow of the magnetic powder core are effectively met, and the production line has wide applicability.
The hanging rod in the coating treatment device in the magnetic powder core production line is arranged, so that the coating uniform treatment application requirement in the roll coating process of the magnetic powder core is effectively met, the roll coating efficiency is effectively improved, and roll coating materials are saved, so that the economic benefit of the magnetic powder core production line can be improved.
Drawings
FIG. 1 is a schematic structural diagram of an amorphous nanocrystalline powder baking apparatus according to the present invention;
FIG. 2 is a schematic view of the structure of the coating treatment apparatus of the present invention;
description of reference numerals:
the device comprises a rod body 10, a mounting end 101, a heat exchange end 102, an inner cavity 103, a liquid inlet pipe 104, a liquid inlet flow channel 105, a liquid outlet flow channel 106, a circulating liquid port 107, a liquid inlet 108, a liquid outlet 109, a groove position 11, a circulating flow channel 12, a rod rotation driving part 13, a mounting bracket 20, a second rotation driving part 201, a heating furnace cavity 21, a first rotation driving part 211, a cavity outlet 212, a cavity inlet 213, an air pipe 22, an air outlet 221, a material turning baffle 23, a material turning baffle plate 24, an ultrasonic vibration instrument 25, a material feeding storage barrel 26, a material feeding plate 27, a material receiving funnel 28 and a material discharging storage barrel 29.
Detailed Description
In order to make the technical solution, the purpose and the advantages of the present invention more apparent, the present invention will be further explained with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to fig. 2, the magnetic powder core production line of the present invention is used for amorphous or nanocrystalline magnetic powder core preparation, in this embodiment, a corresponding amorphous magnetic powder core preparation method is listed, and the corresponding preparation process is as follows:
s1, smelting the alloy raw materials to prepare a master alloy;
s2, preparing corresponding amorphous powder from the master alloy;
s3, mixing the amorphous powder according to a ratio to obtain amorphous mixed powder;
s4, carrying out insulation coating treatment on the amorphous mixed powder to obtain amorphous coated powder;
s5, adding a lubricant into the amorphous coated powder, and stirring and mixing to obtain amorphous finished powder;
s6, performing pressing treatment, sintering treatment, annealing treatment and curing treatment on the amorphous finished product powder to obtain a magnetic powder core base block;
and S7, performing surface coating treatment on the magnetic powder core base block to obtain the amorphous magnetic powder core.
Then, the magnetic powder core production line applying the amorphous magnetic powder core preparation method as described above will include the following devices:
a smelting furnace applied in step S1 to perform corresponding alloy raw material smelting;
a strip spraying machine applied to the step S2 to perform strip spraying treatment on the obtained master alloy to prepare a corresponding amorphous strip;
a mill applied in step S2 to subject the obtained amorphous ribbon to a milling process to obtain amorphous powder in a sheet shape;
a melting device applied in step S2, for preparing the obtained mother alloy into spheroidal amorphous powder by water atomization or gas atomization;
a sieving machine for independently sieving and grading the obtained flaky amorphous powder and the spherical amorphous powder;
corresponding stirring equipment is applied to the steps S3 and S4, so that the graded amorphous powder with different meshes and different shapes is proportioned and mixed, and corresponding insulation coating treatment is carried out according to the proportioned and mixed amorphous powder;
a conical blender applied in step S5 to perform amorphous product powder preparation;
in the step S6, a forging press is applied to perform a pressing process on the amorphous product powder, a sintering furnace is applied to perform a sintering process, an annealing furnace is applied to perform an annealing process, and a vacuum impregnation machine is applied to perform a curing process;
a corresponding coating treatment apparatus is applied in step S7 for a corresponding surface coating treatment application.
Specifically, the present invention discloses an amorphous nanocrystal powder baking apparatus, which is used as the stirring device in the steps S3 and S4.
Example 1:
the amorphous nanocrystalline powder baking device comprises a mounting bracket 20, wherein a heating furnace chamber 21 for heating and baking amorphous nanocrystalline powder is arranged in the mounting bracket 20, and the heating furnace chamber 21 is applied by corresponding heating equipment to realize temperature-controlled heating in the chamber; the heating furnace cavity 21 is cylindrical and barrel-shaped, and the heating furnace cavity 21 and the mounting bracket 20 are coaxially arranged; the heating furnace chamber 21 and the mounting bracket 20 are axially and obliquely arranged relative to the horizontal plane under the support of an external support; an outlet 212 is arranged on the inclined lower side of the heating furnace chamber 21, a receiving funnel 28 is arranged on the mounting bracket 20 corresponding to the outlet 212, and a discharging storage bucket 29 is arranged at the discharging end of the receiving funnel 28 to meet the discharging storage requirement of the heating furnace chamber 21; the inclined upper side of the heating furnace chamber 21 is provided with a chamber inlet 213, the mounting bracket 20 is provided with a feeding storage barrel 26 corresponding to the chamber inlet, and the discharge end of the feeding storage barrel 26 is connected to the position of the chamber inlet by a feeding plate 27 in a matching manner so as to meet the feeding application requirement of the heating furnace chamber 21.
The mounting bracket 20 is provided with a corresponding angle adjusting mechanism in the prior art for adjusting the corresponding inclination angle, and based on the control of the angle adjusting mechanism, the heating furnace chamber 21 and the mounting bracket 20 are axially and obliquely arranged relative to the horizontal plane, so as to ensure that the powder baked in the heating furnace chamber 21 can be conveyed to the position of the cavity outlet 212 on the oblique lower side of the heating furnace chamber, and the processed powder can be output conveniently.
The mounting bracket 20 is provided with a first rotary driving part 211 corresponding to the central axis thereof, and the first rotary driving part 211 is connected with the heating furnace chamber 21; the first rotation driving part 211 drives the heating cavity 21 to rotate around its central axis relative to the mounting bracket 20; specifically, the first rotation driving portion 211 may be configured as a driving motor, so as to meet the application requirement of rotation driving control of the heating cavity in a motor driving combination manner in the prior art.
A ventilation device for outputting gas is arranged outside the mounting bracket 20, a ventilation pipe 22 extends from the gas output end of the ventilation device, and the ventilation pipe 22 is of a hard long circular pipe structure; the mounting bracket 20 is provided with a second rotation driving part 201 corresponding to the central axis thereof at the inclined lower end thereof and connected by a mounting bearing, the vent pipe 22 is inserted into the heating furnace chamber 21 through the chamber inlet 213 at the inclined upper side of the heating furnace chamber 21 and is connected to the mounting bearing in a penetrating manner, so that the vent pipe 22 and the heating furnace chamber 21 are coaxially arranged; the first rotation driving part 211 drives the heating furnace chamber 21 to rotate around the central axis thereof relative to the mounting bracket 20 and the ventilation pipe 22; the second rotation driving part 201 drives the ventilation pipe 22 to rotate around its central axis, and the rotation direction of the heating furnace chamber 21 is opposite to the rotation direction of the ventilation pipe 22.
Similarly, the second rotation driving portion 201 can also be configured as a driving motor, so as to satisfy the application requirement of rotation driving control of the ventilation pipe 22 in a motor driving combination manner in the prior art.
The vent pipe 22 corresponds to the position in the heating furnace chamber 21, a plurality of gas outlet holes 221 for discharging gas are arranged on the peripheral side of the vent pipe, and a plurality of material turning baffles 23 extend radially; a plurality of material turning partition plates 24 are radially arranged on the inner side wall of the heating furnace chamber 21 in an extending manner; when the heating furnace chamber 21 rotates, the material turning baffle 23 and the material turning partition plate 24 perform relative stirring motion along the radial position of the heating furnace chamber 21, so as to meet the stirring application requirement of the amorphous nanocrystalline powder in the heating furnace chamber 21.
The amorphous nanocrystalline powder baking apparatus used in this embodiment 1 relates to an application of a first insulating coating method, and specifically, the first insulating coating method includes the following steps:
s4-11, preheating the heating furnace chamber 21 to 240-450 ℃, and adding corresponding amorphous mixed powder into the heating furnace chamber 21;
s4-12, continuously introducing oxygen-containing air into the heating furnace chamber 21 through the vent pipe 22, turning and stirring the amorphous mixed powder in the heating furnace chamber 21, and allowing the surface of the amorphous mixed powder to fully react with the oxygen-containing air, so that an insulating coating layer is formed on the surface of the amorphous mixed powder, thereby obtaining the amorphous coated powder.
Specifically, the obtained flaky and/or spheroidal amorphous powder is an iron-based amorphous alloy powder containing Fe and Si; subjecting the obtained amorphous mixed powder to a baking treatment in a heating furnace chamber 21 to stress-relief annealing; continuously introducing oxygen-containing air into the heating furnace chamber 21 through the vent pipe 22, and turning and stirring the amorphous mixed powder in the furnace chamber through the turning baffle plate 23 or the turning baffle plate 24 so as to enable the surface of the amorphous mixed powder to fully react with the oxygen-containing air, wherein the chemical reaction formula is related to; fe + O2＝Fe2O3And Si + O2＝SiO2Turning and stirring evenly for full reaction; so that an insulating coating layer with corresponding oxide is formed on the surface of the amorphous mixed powder to obtain coated powder.
According to the first insulation coating method, the insulation coating layer is generated in the insulation coating step by adopting hot air, so that the problems of production cost and environmental pollution are effectively solved; meanwhile, the quality of the insulating coating layer can be effectively improved; the influence of foreign substances introduced in the insulating and coating process on the magnetic performance of the prepared amorphous magnetic powder core is reduced.
The prepared product has the following properties by adopting the same production conditions: the prepared improved magnetic powder core product has higher magnetic conductivity and lower loss, and is more favorable for the requirements of miniaturization and high-frequency application of the product.
Example 2:
the amorphous nanocrystalline powder baking device further comprises an ultrasonic vibrator 25, the ultrasonic vibrator 25 is mounted on the mounting support 20, and the ultrasonic vibrator 25 outputs ultrasonic waves in the heating furnace chamber 21.
The amorphous nanocrystalline powder baking device applied in this embodiment 2 relates to an application of a second insulating coating method, and specifically, the second insulating coating method includes the following steps:
s4-21, mixing and attaching inorganic powder to the amorphous mixed powder by ultrasonic waves to obtain amorphous attached powder;
and S4-22, mixing and fully reacting the alkali solution with the amorphous adhesive powder, drying and fixing by using a binder to fix the surface of the amorphous adhesive powder to form an insulating coating layer, thus obtaining the amorphous coated powder.
The inorganic powder is SiO2Or Fe2O3And the like inorganic oxides; the mesh number of the inorganic powder is more than 8000 meshes, so that the ultrafine effect is achieved, and the particles of the inorganic powder approach to the nano level.
Specifically, the amorphous mixed powder of each mesh is mixed and stirred uniformly by the amorphous nanocrystalline powder baking device, and meanwhile, the ultrasonic vibrator is applied to the amorphous nanocrystalline powder baking device in the mixing and stirring process of the amorphous mixed powder to output ultrasonic waves, and the ultrafine inorganic powder has a certain adsorption capacity, and the inorganic powder is uniformly adhered to the amorphous mixed powder by ultrasonic vibration to obtain amorphous adhered powder.
During the stirring period, the corresponding heating furnace chamber 21 can control the stirring temperature thereof, preferably to be heated at a normal temperature of 25 ℃, so as to meet the stirring application requirements of the equipment in high-temperature or low-temperature areas and avoid the influence of the temperature on the stirring and mixing process.
Mixing an alkali solution with the amorphous attached powder and fully reacting, wherein the alkali solution can be selected from a NaOH solution, and the reaction process comprises the following steps: SiO 22+2NaOH＝Na2SiO3+H2O, stirring uniformly and fully reacting under the condition of normal temperature; adding a binder into the amorphous attaching powder which is fully reacted with the alkali solution to stir until the amorphous attaching powder is uniformly dried, so that the surface of the amorphous attaching powder is provided with Na2SiO3To obtain an amorphous coated powder.
The reaction process of the alkali solution and the amorphous attached powder can be continuously applied to the amorphous nanocrystalline powder baking device for processing; or leading the obtained amorphous attached powder out of the amorphous nanocrystalline powder baking device and then carrying out mixed reaction treatment by other equipment.
The binder is a cohesive inorganic or organic binder; the adhesive is silicon resin, water glass or epoxy resin, and the addition amount of the adhesive is 0.2-2.5%.
The addition amount of the inorganic powder can be increased according to the performance requirement according to the content required by forming a single-layer insulating coating layer; the thickness of the attached insulating coating layer approaches to a single layer and approaches to complete attachment.
The first insulation coating method is applied by adopting a non-corrosive treatment method to carry out corresponding insulation coating application so as to effectively improve the problems of cost and environmental pollution, does not need acid solution to carry out corresponding corrosive reaction, can effectively avoid the change of the amorphous structure on the surface of the powder particles caused by nonuniform coating and excessive local heat release of the powder particles, and avoids the phenomena of magnetic permeability reduction and other magnetic property deterioration of amorphous finished powder.
The prepared product has the following properties by adopting the same production conditions: the prepared improved magnetic powder core product has higher magnetic conductivity and lower loss, and is more favorable for the requirements of miniaturization and high-frequency application of the product.
Example 3:
in another aspect, the present invention further includes a coating processing apparatus, which is used as the coating processing apparatus in step S7.
The coating treatment device comprises a hanging rod, a rod rotation driving part 13 for driving the hanging rod to do self-rotation motion, and a heat exchange part for outputting a heat exchange medium.
The hanging rod comprises a rod body 10, a plurality of groove positions 11 for bearing the magnetic powder core basic block obtained in the step S6 are arranged on the rod body 10 at equal intervals, a circulating flow channel 12 for circulating a heat exchange medium is arranged in the rod body 10, and the heat exchange part is communicated with the circulating flow channel 12; a heat transfer path is provided between the circulation flow passage 12 and the groove 11.
The rod body 10 comprises an assembling end 101 for sleeving and installing materials and a heat exchange end 102 for inputting a heat exchange medium, wherein the assembling end 101 is conical, and the position of the outer diameter of the assembling end, which is far away from the heat exchange end 102, is in a descending trend so as to facilitate the penetration and connection of the magnetic powder core base block.
Specifically, an inner cavity 103 is arranged in the hollow of the rod body 10, a liquid inlet pipe 104 is arranged in the inner cavity 103, and a liquid inlet flow channel 105 is arranged in the liquid inlet pipe 104; a liquid outlet flow channel 106 is arranged between the outer side of the liquid inlet pipe 104 and the inner cavity 103, and the liquid inlet pipe 104 is provided with a plurality of circulating liquid ports 107 for communicating the liquid inlet flow channel 105 with the liquid outlet flow channel 106; the heat exchange end 102 is provided with a liquid inlet 108 communicated with the liquid inlet flow channel 105 and a liquid outlet 109 communicated with the liquid outlet flow channel 106; the heat exchange medium output by the heat exchange part flows along the liquid inlet 108, the liquid inlet flow channel 105, the circulating liquid port 107, the liquid outlet flow channel 106 and the liquid outlet 109 to form the circulating flow channel 12.
Based on the fact that the hanging rod is made of a section material with heat conducting property, a heat transfer path is formed between the circulating flow channel 12 and the groove position 11, and the heat exchange application requirement of the magnetic powder core base block placed on the groove position 11 is met.
The rod rotation driving part 13 may be applied as a driving motor driving method in the prior art, or may be coupled to the first rotation driving part 211 or the second rotation driving part 201 in a belt linkage or a coupling linkage application method in the prior art, so that the first rotation driving part 211 or the second rotation driving part 201 is linked with the hanger rod to perform a self-rotation motion.
And controlling the rotating speed of the rotating rod to be 2-60 r/min by combining corresponding rotating speed control application equipment in the prior art. A plurality of the magnetic powder core base blocks are attached to the rod body 10 and rotated in conjunction with the rotation of the rod body 10.
A material box storing a roll coating insulating material is placed below the rod body 10, and the rod body 10 is linked with a corresponding lifting driving device, so that the magnetic powder core is brought into contact with the roll coating insulating material in the material box by the rod body 10, and the roll coating application requirement of the magnetic powder core base block is met.
Or corresponding spraying equipment can be arranged beside the rod body 10, and corresponding spraying application is carried out on the magnetic powder core base block which rotates in a linkage manner by using corresponding spraying insulating materials.
The heat exchange medium is water, the heat exchange flow channel is arranged to effectively cool the magnetic powder core base blocks on the groove positions 11 under the circulation action of the heat exchange medium in the heat exchange flow channel in the process of roll coating or spraying, and meanwhile, the groove positions 11 can prevent the magnetic powder core base blocks from being close to each other to cause adhesion in the process of roll coating, so that the qualified rate of surface coating treatment of the magnetic powder core preparation is effectively improved.
The above description is only a preferred embodiment of the present invention, and those skilled in the art may still modify the described embodiment without departing from the implementation principle of the present invention, and the corresponding modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The amorphous nanocrystalline powder baking device is characterized by comprising an installation support, wherein a heating furnace chamber for heating and baking amorphous nanocrystalline powder is arranged in the installation support, and the heating furnace chamber is connected with a first rotary driving part for driving the heating furnace chamber to rotate relative to the installation support; the gas outlet end of the ventilation device extends into the heating furnace cavity.
2. The baking apparatus for amorphous and nano-crystalline powders according to claim 1, wherein the gas output end of the venting device is extended with a venting pipe to be extended into the heating furnace chamber, and the venting pipe is provided with a gas outlet corresponding to the position in the heating furnace chamber for venting gas.
3. The apparatus of claim 2, wherein the vent tube is disposed coaxially with the heating chamber, and the first rotation driving portion drives the heating chamber to rotate around a central axis thereof with respect to the mounting bracket and the vent tube.
4. The baking apparatus of claim 2, wherein the vent pipe has a plurality of material turnover baffles extending radially corresponding to the position in the heating furnace chamber.
5. The baking apparatus for amorphous nano-crystalline powder as claimed in claim 1, wherein a plurality of material turnover partitions are radially extended from the inner sidewall of the heating chamber.
6. The apparatus of any of claims 1 to 5, wherein the heating chamber is disposed in a cylindrical shape, the heating chamber is disposed in an inclined manner along an axial direction with respect to a horizontal plane, and an outlet is disposed at an inclined lower side of the heating chamber.
7. The amorphous nanocrystalline powder baking device according to claim 6, wherein a material receiving funnel is disposed on the mounting bracket corresponding to the position of the cavity outlet, and a material discharging storage barrel is disposed at a material discharging end of the material receiving funnel.
8. The amorphous nanocrystalline powder baking apparatus according to claim 6, wherein an inlet is provided on an inclined upper side of the heating furnace chamber, a feeding storage barrel is provided on the mounting bracket corresponding to the inlet, and a discharge end of the feeding storage barrel is connected to the inlet by a feeding plate.
9. The amorphous nanocrystalline powder baking apparatus of claim 1, further comprising an ultrasonic vibrator that outputs ultrasonic waves into the heating furnace chamber.
10. The magnetic powder core production line is characterized by comprising the amorphous nanocrystalline powder baking device and the coating processing device according to any one of claims 1 to 9.
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