CN115547668B - Circular ring magnetic steel processing technology - Google Patents
Circular ring magnetic steel processing technology Download PDFInfo
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- CN115547668B CN115547668B CN202211380082.8A CN202211380082A CN115547668B CN 115547668 B CN115547668 B CN 115547668B CN 202211380082 A CN202211380082 A CN 202211380082A CN 115547668 B CN115547668 B CN 115547668B
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 218
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 127
- 239000010959 steel Substances 0.000 title claims abstract description 127
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 title claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 34
- 239000000853 adhesive Substances 0.000 claims abstract description 33
- 230000001070 adhesive effect Effects 0.000 claims abstract description 33
- 238000010791 quenching Methods 0.000 claims abstract description 30
- 230000000171 quenching effect Effects 0.000 claims abstract description 30
- 238000004381 surface treatment Methods 0.000 claims abstract description 30
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000000227 grinding Methods 0.000 claims abstract description 26
- 238000003754 machining Methods 0.000 claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims description 34
- 238000002156 mixing Methods 0.000 claims description 32
- 238000006056 electrooxidation reaction Methods 0.000 claims description 31
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 30
- 239000004359 castor oil Substances 0.000 claims description 24
- 235000019438 castor oil Nutrition 0.000 claims description 24
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 24
- 239000003822 epoxy resin Substances 0.000 claims description 24
- 229930195729 fatty acid Natural products 0.000 claims description 24
- 239000000194 fatty acid Substances 0.000 claims description 24
- 150000004665 fatty acids Chemical class 0.000 claims description 24
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 24
- 229920000647 polyepoxide Polymers 0.000 claims description 24
- 229920002545 silicone oil Polymers 0.000 claims description 24
- 239000003921 oil Substances 0.000 claims description 22
- 239000000696 magnetic material Substances 0.000 claims description 16
- 235000005074 zinc chloride Nutrition 0.000 claims description 15
- 239000011592 zinc chloride Substances 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 9
- 238000005303 weighing Methods 0.000 description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- H01F41/0253—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 for manufacturing permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- 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)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The invention provides a processing technology of circular magnetic steel, which comprises the following steps: 1) Rough machining to obtain a magnetic steel cylinder; 2) Obtaining a qualified outer circle by using a precise round-rolling instrument; 3) Grinding the inner circle by using a precise instrument to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft; 4) The outer surface of the magnetic steel cylinder is bonded with a magnetic adhesive, and then is vertically cut to obtain a circular ring; 5) Surface treatment to obtain a ring with a mirror surface effect; 6) Quenching and surface secondary treatment to obtain a circular ring of siliconized ferroferric oxide with a compact structure on the surface; 7) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel. The adhesive material has the lubricating effect in slicing and the function of releasing carbon monoxide to promote generation of ferroferric oxide in surface treatment, so that the magnetizing efficiency and the magnetic force retaining effect of the circular magnetic steel are improved.
Description
Technical Field
The invention belongs to the technical field of high-end sound manufacturing of electronic information products, and particularly relates to a processing technology of circular magnetic steel.
Background
Along with the development of life, sound equipment is popularized in life, a magnetic ring is an accessory for ensuring normal operation of electronic equipment, and a magnetic ring for generating a magnetic field is an anti-interference element commonly used in an electronic circuit and has a good inhibition effect on high-frequency noise, so that the high-end sound equipment needs to be provided with a lighter magnetic ring for noise reduction, and the requirements on the flatness and the smoothness of the magnetic ring are extremely high.
The coaxiality of the existing magnetic ring finished product is generally larger than 0.2mm, the deviation is larger, the ideal coaxiality is achieved to be less than 0.1mm, in order to enable a magnetic field in sound to be more uniform, the magnetic ring has a better noise suppression effect, the quality of the sound box is improved, the inventor researches a processing technology of the cut and ground circular ring magnetic steel for many years, and the flatness and the smoothness are improved, and meanwhile the magnetic ring magnetic steel is lighter and thinner.
Disclosure of Invention
The invention aims to solve the problems of unstable quality and uneven thickness of the existing circular magnetic steel, and particularly provides a processing technology of the circular magnetic steel.
To achieve the above object, the specific scheme is as follows:
a processing technology of circular magnetic steel comprises the following steps: 1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm; 2) Obtaining a qualified outer circle by using a precise round-rolling instrument, and controlling the diameter of the outer circle within a range of 48mm plus or minus 0.1 mm; 3) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts; 4) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 3, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring; 5) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect; 6) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1200-1300 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide; 7) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel.
Further preferably, the thickness of the circular ring is 1.1+/-0.01 mm/each.
The invention further preferably comprises the step of placing the magnetic steel cylinder in a zinc chloride solution with the temperature of 60-80 ℃ for electrochemical corrosion for 30-50min before the precise round and round instrument is utilized in the step 2).
Further preferably, before the electrochemical corrosion step, rust preventive oil is sprayed on the inner and outer sides of the magnetic steel cylinder, and then the rust preventive oil on the surface is wiped off.
Further preferred according to the present invention, the zinc chloride solution is a zinc chloride aqueous solution of 0.5 to 3 mol/L.
It is further preferred that the magnetic adhesive has a thickness of 0.001 to 0.1mm.
The invention further preferably comprises castor oil, epoxy resin, fatty acid amide, silicone oil and nano magnetic material, wherein the weight ratio of the first four is 1:5-7:3-5:1-2, the nano magnetic material accounts for 28-42% of the weight of the magnetic binder.
Further preferably, the preparation method of the magnetic binder comprises the following steps: and uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, and uniformly mixing to obtain the magnetic adhesive.
The invention further preferably comprises the following specific processes of quenching and surface secondary treatment in the step 6:
1) Putting the circular ring with the mirror effect into a reactor, heating to 1400-1600 ℃, introducing supersaturated steam into the reactor, discharging air and water existing in the reactor, and maintaining the temperature at 1200-1300 ℃ for 3-10min to obtain the circular ring with the surface of compact-structure siliconized ferroferric oxide; 2) Quenching: and (3) cooling the circular ring to 600-800 ℃ in air, then cooling in water, and airing to room temperature to finish the quenching process.
Further preferably, the specific process of surface treatment in step 6 is as follows:
the invention has the following technical effects compared with the prior art:
1) The steel cylinder is processed in an electrochemical mode, so that the processing efficiency of the steel cylinder is improved; 2) The magnetic adhesive has the lubricating effect in slicing and the function of releasing carbon monoxide to promote generation of ferroferric oxide in surface treatment, so that the magnetizing efficiency and the magnetic force retaining effect of the circular magnetic steel are improved; 3) The thickness of the circular magnetic steel prepared by the invention is 1.1mm, the circular magnetic steel belongs to an extremely thin circular magnetic steel sheet, the magnetic field is uniformly distributed, and the circular magnetic steel has a very strong control effect on noise when being used for sound.
Detailed Description
The following will clearly and fully describe the technical aspects of the invention in connection with the embodiments of the invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A first part:
example 1:
preparing a magnetic binder: weighing 100g of castor oil; 600g of epoxy resin; 400g of silicone oil; and (3) mixing 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step (5).
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48mm plus or minus 0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1200-1300 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide;
8) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 1.
Example 2:
preparing a magnetic binder: 200g of castor oil is weighed; 500g of epoxy resin; 100g of silicone oil; 100g of fatty acid amide, uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step 5.
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48mm plus or minus 0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1200-1300 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide;
8) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 2.
Example 3:
preparing a magnetic binder: 200g of castor oil is weighed; 700g of epoxy resin; 200g of silicone oil; and (3) mixing 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step (5).
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48mm plus or minus 0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1200-1300 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide;
8) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 3.
Example 4:
preparing a magnetic binder: weighing 100g of castor oil; 800g of epoxy resin; 800g of silicone oil; 200g of fatty acid amide, uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step 5.
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48mm plus or minus 0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1200-1300 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide;
8) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 4.
Example 5:
preparing a magnetic binder: weighing 100g of castor oil; 600g of epoxy resin; 400g of silicone oil; and (3) mixing 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step (5).
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at normal temperature for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48 mm+/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1200-1300 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide;
8) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 5.
Example 6:
preparing a magnetic binder: weighing 100g of castor oil; 600g of epoxy resin; 400g of silicone oil; and (3) mixing 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step (5).
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Obtaining a qualified outer circle by using a precise round-rolling instrument, and controlling the diameter of the outer circle within a range of 48mm plus or minus 0.1 mm;
3) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
4) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 3, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
5) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
6) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1200-1300 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide;
7) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 6.
Example 7:
preparing a magnetic binder: weighing 100g of castor oil; 600g of epoxy resin; 400g of silicone oil; and (3) mixing 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step (5).
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48mm plus or minus 0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 600-800 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide;
8) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 7.
Example 8:
preparing a magnetic binder: weighing 100g of castor oil; 600g of epoxy resin; 400g of silicone oil; and (3) mixing 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step (5).
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48mm plus or minus 0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1000-1200 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide;
8) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 8.
Example 9:
preparing a magnetic binder: weighing 100g of castor oil; 600g of epoxy resin; 400g of silicone oil; and (3) mixing 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step (5).
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48mm plus or minus 0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1800-2000 ℃ for 3-10min, taking out, and quenching to obtain a ring with the surface of compact-structure siliconized ferroferric oxide;
8) Magnetizing: and magnetizing the ring with the surface of compact-structure siliconized ferroferric oxide according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 9.
Example 10:
preparing a magnetic binder: weighing 100g of castor oil; 600g of epoxy resin; 400g of silicone oil; and (3) mixing 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, uniformly mixing to obtain a magnetic binder, and using the magnetic binder in the step (5).
A processing technology of circular magnetic steel comprises the following steps:
1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm;
2) Spraying rust-proof oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the rust-proof oil on the surface, so that the electrochemical corrosion of the surface is balanced, and the phenomenon that the electrochemical corrosion is uneven due to a gap at a certain place is prevented;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, internally fixing through an adjustable inner shaft, obtaining a qualified outer circle by using a precise round rounding instrument, and controlling the diameter of the outer circle within the range of 48mm plus or minus 0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts;
5) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 4, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring;
6) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect;
7) Magnetizing: and (3) magnetizing the circular ring with the mirror surface effect according to the required magnetic standard to obtain the circular ring magnetic steel in the embodiment 10.
The ring magnetic steels prepared in examples 1 to 10 were subjected to performance test, and the results were as follows:
the circular magnetic steel in the embodiment 1 is used for a high-end sound box, has even magnetic field distribution and has a strong noise suppression effect. Whereas the effects of example 2 and example 3 were poorer than those of example 1, the analytical reasons were: the hysteresis and eddy current loss of the ring magnetic steels of example 2 and example 3 were increased due to insufficient silicon content, and the ring magnetic steel of example 4 had a shorter magnetic time, and the analysis was due to: the ring magnetic steel in example 4 has high silicon content, but affects the density of ferroferric oxide, the surface of the ring is not compact enough, and the phenomenon of scratch or abrasion is easy to occur. Example 5 was subjected to electrochemical treatment at room temperature, and example 6 was not subjected to electrochemical treatment, and the man-hours for grinding the outer circle and the inner circle were significantly increased; the surface treatment temperatures of examples 7, 8 and 9 were different, the effect of the surface treatment was also different, and the magnetic effect was also different in example 10 without the quenching process.
The test results of the embodiment show that the key technology for processing the circular ring magnetic steel is provided, and the formula of the adhesive plays a key role.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A processing technology of circular magnetic steel is characterized in that: the method comprises the following steps: 1) Rough machining to obtain a magnetic steel cylinder with the outer diameter of 49-50mm, the error of 1mm, the inner diameter of 28-29mm and the error of <0.5 mm; 2) Obtaining a qualified outer circle by using a precise round-rolling instrument, and controlling the diameter of the outer circle within a range of 48mm plus or minus 0.1 mm; 3) Fixing the outer circle, grinding the inner circle by using a precise instrument, and controlling the diameter of the inner circle within the range of 30mm plus or minus 0.6mm to prepare a magnetic steel cylinder with inner and outer concentric shafts; 4) Bonding magnetic adhesive on the outer surface of the concentric shaft magnetic steel cylinder obtained in the step 3, and then vertically cutting the magnetic steel cylinder with the surface uniformly covered with the magnetic adhesive to obtain a circular ring; 5) Surface treatment: then, carrying out surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces reaching the mirror effect; 6) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 1200-1300 ℃ for 3-10min, taking out, and quenching to obtain the ring with the surface of compact-structure siliconized ferroferric oxide; 7) Magnetizing: magnetizing the ring with the surface of compact structure of the silicon ferroferric oxide according to the required magnetic standard to obtain ring magnetic steel; the magnetic binder comprises castor oil, epoxy resin, fatty acid amide, silicone oil and a nano magnetic material, wherein the weight ratio of the first four is 1:5-7:3-5:1-2, the nano magnetic material accounts for 28-42% of the weight of the magnetic binder; the preparation method of the magnetic adhesive comprises the following steps: and uniformly mixing castor oil, fatty acid amide, silicone oil and a nano magnetic material, then adding the mixture into epoxy resin, and uniformly mixing to obtain the magnetic adhesive.
2. The circular ring magnetic steel machining process according to claim 1, wherein: the thickness of the circular ring is 1.1+/-0.01 mm/piece.
3. The circular ring magnetic steel machining process according to claim 1, wherein: and before the precise round rolling instrument is utilized in the step 2), the magnetic steel cylinder is placed in a zinc chloride solution with the temperature of 60-80 ℃ for electrochemical corrosion for 30-50min.
4. A process for machining circular magnetic steel according to claim 3, wherein: before the electrochemical corrosion step, rust-preventive oil is sprayed on the inner and outer sides of the magnetic steel cylinder, and then the rust-preventive oil on the surface is wiped off.
5. A process for machining circular magnetic steel according to claim 3, wherein: the zinc chloride solution is zinc chloride aqueous solution with the concentration of 0.5-3 mol/L.
6. The circular ring magnetic steel machining process according to claim 1, wherein: the magnetic adhesive has a thickness of 0.001-0.1mm.
7. The circular ring magnetic steel machining process according to claim 1, wherein: the specific process of quenching and surface secondary treatment in the step 6 is as follows: 1) Placing the ring with mirror effect into a reactor, heating to
Introducing supersaturated steam into a reactor at 1400-1600 ℃, discharging air and water existing in the reactor, and maintaining the temperature at 1200-1300 ℃ for 3-10min to obtain a circular ring with the surface of compact-structure siliconized ferroferric oxide; 2) Quenching: and (3) cooling the circular ring to 600-800 ℃ in air, then cooling in water, and airing to room temperature to finish the quenching process.
8. The circular ring magnetic steel machining process according to claim 1, wherein: the magnetizing treatment in the step 7) is a magnetizing process of the prior conventional technology.
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