CN115547668A - Processing technology of circular ring magnetic steel - Google Patents
Processing technology of circular ring magnetic steel Download PDFInfo
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- CN115547668A CN115547668A CN202211380082.8A CN202211380082A CN115547668A CN 115547668 A CN115547668 A CN 115547668A CN 202211380082 A CN202211380082 A CN 202211380082A CN 115547668 A CN115547668 A CN 115547668A
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- circular ring
- steel cylinder
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 215
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 137
- 239000010959 steel Substances 0.000 title claims abstract description 137
- 238000012545 processing Methods 0.000 title claims abstract description 33
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 57
- 230000000694 effects 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
- 238000000227 grinding Methods 0.000 claims abstract description 27
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical group [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract 2
- 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
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 22
- 239000003921 oil Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 18
- 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
- 239000000203 mixture Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 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
- 238000003754 machining Methods 0.000 claims 12
- 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
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 20
- 238000005303 weighing Methods 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001629 suppression Effects 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 ring magnetic steel, which comprises the following steps: 1) Roughly processing to obtain a magnetic steel cylinder; 2) Obtaining a qualified outer circle by using a precise circle rolling instrument; 3) Grinding the inner circle by using a precision instrument to obtain a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft; 4) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder, and then vertically cutting to obtain a circular ring; 5) Performing surface treatment to obtain a ring with a mirror surface effect; 6) Quenching and surface secondary treatment to obtain a ferroferric silicide ring with a compact surface structure; 7) Magnetizing: and magnetizing the ring with the surface of the compact ferroferric silicide oxide according to the required magnetic standard to obtain the ring magnetic steel. The adhesive material has a lubricating effect in slicing, has a function of releasing carbon monoxide to promote generation of ferroferric oxide in surface treatment, and improves the magnetizing efficiency and the magnetic force maintaining effect of the circular magnetic steel.
Description
Technical Field
The invention belongs to the technical field of manufacturing of high-end sound equipment of electronic information products, and particularly relates to a processing technology of circular magnetic steel.
Background
With the popularization of the sound in life along with the development of life, the magnetic ring is an accessory for ensuring the normal work of electronic equipment, the magnetic ring generating a magnetic field is a common anti-interference element in an electronic circuit, and the anti-interference element has a good inhibition effect on high-frequency noise, so that the high-end sound needs to be provided with the thinner magnetic ring for reducing the noise, 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 large, the ideal coaxiality is less than 0.1mm, in order to enable a magnetic field in a sound box to be more uniform, have a better inhibiting effect on noise and improve the quality of a sound box, an inventor researches a processing technology for carving and grinding circular magnetic steel for many years, and the flatness and the smoothness are improved and the circular magnetic steel is lighter and thinner.
Disclosure of Invention
The invention aims to provide a processing technology of circular magnetic steel, aiming at the problems that the existing circular magnetic steel is not stable enough in quality and large in thickness and not uniform enough.
In order to achieve the purpose, the specific scheme is as follows:
a processing technology for circular ring magnetic steel comprises the following steps: 1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of <0.5mm for an inner diameter of 28-29 mm; 2) Obtaining a qualified outer circle by using a precise circle rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm; 3) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft; 4) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step 3, and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring; 5) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface 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 a ring with a compact-structure ferroferric oxide surface; 7) Magnetizing: and magnetizing the ring with the surface of the compact ferroferric silicide oxide according to the required magnetic standard to obtain the ring magnetic steel.
Further preferably according to the invention, the thickness of the ring is 1.1 ± 0.01 mm/piece.
Further preferably, before the precise round rolling instrument is used 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.
Further preferably, before the step of electrochemical corrosion, the magnetic steel cylinder is sprayed with rust preventive oil inside and outside, and then the rust preventive oil on the surface is wiped off.
Further preferably, the zinc chloride solution is 0.5-3mol/L zinc chloride aqueous solution.
Further preferably according to the invention, the thickness of the magnetic binder is 0.001-0.1mm.
The invention further preferably discloses that the magnetic binder comprises castor oil, epoxy resin, fatty acid amide, silicone oil and a nano magnetic material, wherein the weight part ratio of the former four is 1: 3-5, and 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: the castor oil, the fatty acid amide, the silicone oil and the nano magnetic material are uniformly mixed, and then the mixture is added into the epoxy resin and uniformly mixed to obtain the magnetic binder.
Further preferably, the quenching and surface secondary treatment in step 6 comprises the following specific processes:
1) Placing the ring with the mirror surface 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 a ferroferric silicide ring with a compact structure on the surface; 2) Quenching: and (3) placing the circular ring in air, cooling to 600-800 ℃, then placing the circular ring in water for cooling, and airing to room temperature to finish the quenching process.
Further preferably, the specific process of surface treatment in step 6 is as follows:
compared with the prior art, the invention has the following technical effects:
1) The invention processes the steel cylinder in an electrochemical mode, thereby improving the efficiency of steel cylinder processing; 2) The magnetic binder has a lubricating effect in slicing, has a function of releasing carbon monoxide to promote generation of ferroferric oxide in surface treatment, and improves the magnetizing efficiency and the magnetic force maintaining effect of the circular magnetic steel; 3) The thickness of the prepared circular magnetic steel is 1.1mm, the circular magnetic steel belongs to an extremely thin magnetic steel circular ring piece, the magnetic field is uniformly distributed, and the circular magnetic steel is used for a sound box and has a strong noise control effect.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present 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) 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and the nano magnetic material, then adding the mixture into epoxy resin, and uniformly mixing to obtain the magnetic binder used in the step 5.
A processing technology for circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of less than 0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so as to ensure that the electrochemical corrosion surface starts to be more balanced and prevent the electrochemical corrosion from reaching a gap at a certain position to cause unevenness;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, fixing the magnetic steel cylinder internally through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circular rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with mirror surface effect at 1200-1300 deg.C for 3-10min, taking out, and quenching to obtain ring with compact structure of ferroferric oxide silicide;
8) Magnetizing: and magnetizing the ring with the surface of the ferroferric silicide with the compact structure according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 1.
Example 2:
preparing a magnetic binder: weighing 200g of castor oil; 500g of epoxy resin; 100g of silicone oil; and (5) mixing 100g of fatty acid amide, castor oil, fatty acid amide, silicone oil and the nano magnetic material uniformly, then adding the mixture into epoxy resin, and mixing uniformly to obtain the magnetic binder for the step 5.
A processing technology of circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of less than 0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so as to ensure that the electrochemical corrosion surface starts to be more balanced and prevent the electrochemical corrosion from reaching a gap at a certain position to cause unevenness;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, fixing the magnetic steel cylinder inside through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circle rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface 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 a ring with a compact-structure ferroferric oxide surface;
8) Magnetizing: and magnetizing the ring with the surface of the ferroferric silicide with the compact structure according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 2.
Example 3:
preparing a magnetic binder: weighing 200g of castor oil; 700g of epoxy resin; 200g of silicone oil; and (3) 300g of fatty acid amide, namely uniformly mixing the castor oil, the fatty acid amide, the silicone oil and the nano magnetic material, then adding the mixture into the epoxy resin, and uniformly mixing to obtain the magnetic binder for the step 5.
A processing technology of circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of <0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so as to ensure that the electrochemical corrosion surface starts to be more balanced and prevent the electrochemical corrosion from reaching a gap at a certain position to cause unevenness;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, fixing the magnetic steel cylinder internally through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circular rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with mirror surface effect at 1200-1300 deg.C for 3-10min, taking out, and quenching to obtain ring with compact structure of ferroferric oxide silicide;
8) Magnetizing: and magnetizing the ring with the surface of the dense-structure ferroferric silicide 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; and (3) 200g of fatty acid amide, namely uniformly mixing the castor oil, the fatty acid amide, the silicone oil and the nano magnetic material, then adding the mixture into epoxy resin, and uniformly mixing to obtain the magnetic binder used in the step 5.
A processing technology for circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of less than 0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so that the surface is subjected to electrochemical corrosion more uniformly, and the phenomenon that the gap at a certain position is subjected to electrochemical corrosion to cause unevenness is avoided;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, fixing the magnetic steel cylinder inside through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circle rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with mirror surface effect at 1200-1300 deg.C for 3-10min, taking out, and quenching to obtain ring with compact structure of ferroferric oxide silicide;
8) Magnetizing: and magnetizing the ring with the surface of the dense-structure ferroferric silicide 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) 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and the nano magnetic material, then adding the mixture into epoxy resin, and uniformly mixing to obtain the magnetic binder used in the step 5.
A processing technology for circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of <0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so as to ensure that the electrochemical corrosion surface starts to be more balanced and prevent the electrochemical corrosion from reaching a gap at a certain position to cause unevenness;
3) Placing a magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at normal temperature for electrochemical corrosion for 30-50min, carrying out internal fixation through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circular rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface 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 a ring with a compact-structure ferroferric oxide surface;
8) Magnetizing: and magnetizing the ring with the surface of the ferroferric silicide with the compact structure 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) 300g of fatty acid amide, namely uniformly mixing the castor oil, the fatty acid amide, the silicone oil and the nano magnetic material, then adding the mixture into the epoxy resin, and uniformly mixing to obtain the magnetic binder for the step 5.
A processing technology for circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of less than 0.5mm for an inner diameter of 28-29 mm;
2) Obtaining a qualified outer circle by using a precise circle rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
3) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
4) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step 3, and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
5) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface effect;
6) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with mirror surface effect at 1200-1300 deg.C for 3-10min, taking out, and quenching to obtain ring with compact structure of ferroferric oxide silicide;
7) Magnetizing: and magnetizing the ring with the surface of the ferroferric silicide with the compact structure 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) 300g of fatty acid amide, namely uniformly mixing the castor oil, the fatty acid amide, the silicone oil and the nano magnetic material, then adding the mixture into the epoxy resin, and uniformly mixing to obtain the magnetic binder for the step 5.
A processing technology of circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of less than 0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so as to ensure that the electrochemical corrosion surface starts to be more balanced and prevent the electrochemical corrosion from reaching a gap at a certain position to cause unevenness;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, fixing the magnetic steel cylinder inside through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circle rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with the mirror surface effect at 600-800 deg.C for 3-10min, taking out, and quenching to obtain a ring with compact ferroferric oxide surface;
8) Magnetizing: and magnetizing the ring with the surface of the ferroferric silicide with the compact structure 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) 300g of fatty acid amide, namely uniformly mixing the castor oil, the fatty acid amide, the silicone oil and the nano magnetic material, then adding the mixture into the epoxy resin, and uniformly mixing to obtain the magnetic binder for the step 5.
A processing technology of circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of less than 0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so as to ensure that the electrochemical corrosion surface starts to be more balanced and prevent the electrochemical corrosion from reaching a gap at a certain position to cause unevenness;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, fixing the magnetic steel cylinder internally through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circular rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface 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 a ring with a compact-structure ferroferric oxide surface;
8) Magnetizing: and magnetizing the ring with the surface of the ferroferric silicide with the compact structure 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) 300g of fatty acid amide, namely uniformly mixing the castor oil, the fatty acid amide, the silicone oil and the nano magnetic material, then adding the mixture into the epoxy resin, and uniformly mixing to obtain the magnetic binder for the step 5.
A processing technology for circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of <0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so as to ensure that the electrochemical corrosion surface starts to be more balanced and prevent the electrochemical corrosion from reaching a gap at a certain position to cause unevenness;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, fixing the magnetic steel cylinder internally through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circular rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface effect;
7) Quenching and surface secondary treatment: introducing supersaturated steam into the ring with mirror surface effect at 1800-2000 deg.C for 3-10min, taking out, and quenching to obtain ring with compact ferroferric oxide surface;
8) Magnetizing: and magnetizing the ring with the surface of the ferroferric silicide with the compact structure 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) 300g of fatty acid amide, namely uniformly mixing castor oil, fatty acid amide, silicone oil and the nano magnetic material, then adding the mixture into epoxy resin, and uniformly mixing to obtain the magnetic binder used in the step 5.
A processing technology for circular ring magnetic steel specifically comprises the following steps:
1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of <0.5mm for an inner diameter of 28-29 mm;
2) Spraying anti-rust oil inside and outside the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface, so that the surface is subjected to electrochemical corrosion more uniformly, and the phenomenon that the gap at a certain position is subjected to electrochemical corrosion to cause unevenness is avoided;
3) Placing the magnetic steel cylinder in 0.5-3mol/L zinc chloride aqueous solution at 60-80 ℃ for electrochemical corrosion for 30-50min, fixing the magnetic steel cylinder inside through an adjustable inner shaft, obtaining a qualified outer circle by using a precise circle rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm;
4) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft;
5) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step (4), and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring;
6) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface effect;
7) Magnetizing: and magnetizing the ring with the mirror surface effect according to the required magnetic standard to obtain the ring magnetic steel of the embodiment 10.
The ring magnet steels prepared in examples 1 to 10 were subjected to performance tests, and the results were as follows:
the ring magnet steel of embodiment 1 is used for high-end audio amplifier, and magnetic field distribution is even, has very strong suppression effect to the noise. The results of examples 2 and 3 are inferior to example 1, and the reasons for the analysis are: the hysteresis and eddy current loss of the magnetic ring steels of examples 2 and 3 are increased because the content of silicon is insufficient, the magnetic time of the magnetic ring steels of example 4 is short, and the analysis reason is that: although the silicon content of the ring magnetic steel in the embodiment 4 is high, the compactness of ferroferric oxide is affected, and the surface of the ring is not compact enough, so that 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 effects of examples 7, 8 and 9 were different depending on the surface treatment temperature, and the magnetic effects were different depending on example 10, in which the quenching process was not performed.
The test results of the above embodiment show that the key of the invention is the processing technology of the circular magnetic steel, and the formula of the binder also plays a key role.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A processing technology of circular ring magnetic steel is characterized in that: the method comprises the following steps: 1) Roughly processing to obtain a magnetic steel cylinder with an error of 1mm for an outer diameter of 49-50mm and an error of <0.5mm for an inner diameter of 28-29 mm; 2) Obtaining a qualified outer circle by using a precise circle rolling instrument, and controlling the diameter of the outer circle within the range of 48mm +/-0.1 mm; 3) Fixing the outer circle, grinding the inner circle by using a precision instrument, and controlling the diameter of the inner circle within the range of 30mm +/-0.6 mm to prepare a magnetic steel cylinder with an inner concentric shaft and an outer concentric shaft; 4) Bonding a magnetic binder on the outer surface of the magnetic steel cylinder of the concentric shaft obtained in the step 3, and then vertically cutting the magnetic steel cylinder uniformly covered with the magnetic binder on the surface to obtain a circular ring; 5) Surface treatment: then, performing surface treatment by using precision grinding equipment to obtain a circular ring with higher surface parallelism and two parallel surfaces achieving a mirror surface 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 a ring with a compact-structure ferroferric oxide surface; 7) Magnetizing: and magnetizing the ring with the surface of the compact ferroferric silicide oxide according to the required magnetic standard to obtain the ring magnetic steel.
2. The process for machining circular ring magnetic steel according to claim 1, wherein: the thickness of the circular ring is 1.1 +/-0.01 mm/piece.
3. The process for machining circular ring magnetic steel according to claim 1, wherein the machining process comprises the following steps: before the precise round rolling instrument is used in the step 2), the magnetic steel cylinder is placed in a zinc chloride solution at the temperature of 60-80 ℃ for electrochemical corrosion for 30-50min.
4. The process for machining circular ring magnetic steel according to claim 3, wherein: before the electrochemical corrosion step, spraying anti-rust oil on the inner and outer sides of the magnetic steel cylinder, and then wiping off the anti-rust oil on the surface.
5. The process for machining circular ring magnetic steel according to claim 3, wherein: the zinc chloride solution is 0.5-3mol/L zinc chloride aqueous solution.
6. The process for machining circular ring magnetic steel according to claim 1, wherein the machining process comprises the following steps: the thickness of the magnetic binder is 0.001-0.1mm.
7. The process for machining circular ring magnetic steel according to claim 1, wherein: the magnetic binder comprises castor oil, epoxy resin, fatty acid amide, silicone oil and a nano magnetic material, wherein the weight part ratio of the first four materials is (1-7): 3-5, and the nano magnetic material accounts for 28-42% of the weight of the magnetic binder.
8. The process for machining circular ring magnetic steel according to claim 7, wherein: the preparation method of the magnetic binder comprises the following steps: the castor oil, the fatty acid amide, the silicone oil and the nano magnetic material are uniformly mixed, and then the mixture is added into the epoxy resin and uniformly mixed to obtain the magnetic binder.
9. The process for machining circular ring magnetic steel according to claim 1, wherein the machining process comprises the following steps: the specific process of quenching and surface secondary treatment in the step 6 comprises the following steps: 1) Placing the ring with the mirror surface 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 a ferroferric silicide ring with a compact structure on the surface; 2) Quenching: and (3) placing the circular ring in air, cooling to 600-800 ℃, then placing the circular ring in water for cooling, and airing to room temperature to finish the quenching process.
10. The process for machining circular ring magnetic steel 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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