WO2016179998A1 - Corrosion-proof radially anisotropic magnetic ring - Google Patents
Corrosion-proof radially anisotropic magnetic ring Download PDFInfo
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- WO2016179998A1 WO2016179998A1 PCT/CN2015/095045 CN2015095045W WO2016179998A1 WO 2016179998 A1 WO2016179998 A1 WO 2016179998A1 CN 2015095045 W CN2015095045 W CN 2015095045W WO 2016179998 A1 WO2016179998 A1 WO 2016179998A1
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- WIPO (PCT)
- Prior art keywords
- magnetic ring
- corrosion
- parts
- film
- protective film
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
Definitions
- the invention relates to an anti-corrosion radial anisotropic magnetic ring, belonging to the technical field of magnetic materials.
- the magnetic ring is a new type of interference suppressing device with low cost and good quality. It is made of high magnetic permeability material and is infiltrated with other metal or magnesium, zinc, nickel and other metals at 2000 °C. It is a commonly used anti-interference component in electronic circuits, has a certain impedance characteristic, and has a good suppression effect on high frequency noise. Applicable to computer monitors, printers, copiers, digital cameras, communication equipment, household appliances, communication power, cable, power cord, USB cable series anti-interference effect. Its function is equivalent to a low-pass filter, which better solves the problem of high-frequency interference suppression of power lines, signal lines and connectors. Moreover, it has a series of advantages such as being simple, convenient, effective, and occupying a small space. It is an economical, simple and effective method to suppress electromagnetic interference (EMI) with an anti-interference magnetic ring.
- EMI electromagnetic interference
- the magnet In a certain use environment, if the magnet is subjected to strong corrosion, it will cause a decrease in magnetic properties, thereby improving the corrosion resistance of the magnet.
- the anti-corrosion radial anisotropy magnetic ring of the present invention is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, and the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring, the
- the insulating coating is an epoxy coating
- the anti-corrosion protective film is a zinc chromium film
- the zinc chromium film is baked by the following materials: zinc powder 8-10 parts by weight, aluminum powder 1-2 parts by weight 1-2 parts by weight of chromium oxide, 0.03-0.05 parts by weight of a film-forming auxiliary agent
- the epoxy coating layer has a thickness of 50-70 ⁇ m
- the anti-corrosion protective film has a thickness of 50-70 ⁇ m.
- the thickness ratio of the epoxy coating to the thickness of the corrosion-resistant protective film is 1:1.
- the anti-corrosion radial anisotropy magnetic ring of the present invention has the following technical effects: it can protect the NdFeB permanent magnet magnetic ring, and does not cause a magnetic drop even if it is subjected to strong corrosion.
- the anti-corrosion radial anisotropy magnetic ring of the embodiment is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, and the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring,
- the insulating coating is an epoxy coating
- the anti-corrosion protective film is a zinc chromium film
- the zinc chromium film is baked by the following materials: 10 parts by weight of zinc powder, 1 part by weight of aluminum powder, and chromium oxide. 2 parts by weight of the film-forming auxiliary agent was 0.05 parts by weight.
- the epoxy coating has a thickness of 50 microns; the titanium nitride coating has a thickness of 50 microns.
- the anti-corrosion radial anisotropy magnetic ring of the embodiment is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, and the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring,
- the insulating coating is an epoxy coating
- the anti-corrosion protective film is a zinc chromium film
- the zinc chromium film is baked from the following raw materials: 8 parts by weight of zinc powder, 2 parts by weight of aluminum powder, and chromium oxide. 1 part by weight of a film-forming auxiliary agent was 0.03 part by weight.
- the epoxy coating has a thickness of 70 microns; the titanium nitride coating has a thickness of 70 microns.
- the anti-corrosion radial anisotropy magnetic ring of the embodiment is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, and the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring,
- the insulating coating is an epoxy coating
- the anti-corrosion protective film is a zinc chromium film
- the zinc chromium film is baked from the following raw materials: 9 parts by weight of zinc powder, 1.5 parts by weight of aluminum powder, and chromium oxide. 1.5 parts by weight of a film-forming auxiliary agent was 0.04 parts by weight.
- the epoxy coating has a thickness of 60 microns; the titanium nitride coating has a thickness of 60 microns.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Provided in the invention is a corrosion-proof radially anisotropic magnetic ring. The corrosion-proof radially anisotropic magnetic ring comprises, sequentially from inside to outside, a magnetic ring body, an insulating coating and a corrosion-proof protective film, wherein the magnetic ring body is a NdFeB permanent-magnet magnetic ring, the insulating coating is an epoxy coating, and the corrosion-proof protective film is a zinc-chromium film, and the zinc-chromium film is prepared by baking the following raw materials in parts by weight: 8-10 parts of zinc powder, 1-2 parts of aluminum powder, 1-2 parts of chromium oxide and 0.03-0.05 part of a film-forming agent. The thickness of the epoxy coating is 50-70 microns, and the thickness of the corrosion-proof protective film is 50-70 microns. The corrosion-proof radial-anisotropy magnetic ring provided in the present invention has the following technical effects: the NdFeB permanent-magnet magnetic ring can be protected, and thus the magnetic property cannot be decreased even if the magnetic ring is subjected to relatively strong corrosion.
Description
本发明涉及一种防腐蚀径向异性磁环，属于磁性材料技术领域。The invention relates to an anti-corrosion radial anisotropic magnetic ring, belonging to the technical field of magnetic materials.
磁环是一种新型的价廉物美的干扰抑制器件，是利用高导磁性材料,渗合其他一种或多种镁、锌、镍等金属,在2000℃烧聚而成。它是电子电路中常用的抗干扰元件,有一定的阻抗特性,对于高频噪声有很好的抑制作用。适用于电脑显示器、打印机、复印机、数码相机、通讯设备、家用电器、通讯电源、排线、电源线、USB线系列抗干扰效果。其作用相当于低通滤波器,较好地解决了电源线,信号线和连接器的高频干扰抑制问题。而且,具有使用简单、方便、有效,占用空间不大等一系列优点。用抗千扰磁环来抑制电磁干扰(EMI),是经济简便而有效的方法。The magnetic ring is a new type of interference suppressing device with low cost and good quality. It is made of high magnetic permeability material and is infiltrated with other metal or magnesium, zinc, nickel and other metals at 2000 °C. It is a commonly used anti-interference component in electronic circuits, has a certain impedance characteristic, and has a good suppression effect on high frequency noise. Applicable to computer monitors, printers, copiers, digital cameras, communication equipment, household appliances, communication power, cable, power cord, USB cable series anti-interference effect. Its function is equivalent to a low-pass filter, which better solves the problem of high-frequency interference suppression of power lines, signal lines and connectors. Moreover, it has a series of advantages such as being simple, convenient, effective, and occupying a small space. It is an economical, simple and effective method to suppress electromagnetic interference (EMI) with an anti-interference magnetic ring.
在一定的使用环境下，如果磁体受到较强的腐蚀，会引起磁性下降，因此提高磁体的防腐蚀性。In a certain use environment, if the magnet is subjected to strong corrosion, it will cause a decrease in magnetic properties, thereby improving the corrosion resistance of the magnet.
发明内容Summary of the invention
本发明的目的是克服现有技术的不足之处，提供一种防腐蚀径向异性磁环。SUMMARY OF THE INVENTION It is an object of the present invention to overcome the deficiencies of the prior art and to provide an anti-corrosion radial anisotropic magnetic ring.
本发明的防腐蚀径向异性磁环，从内到外，依次由磁环本体、绝缘涂层和防腐蚀保护膜组成，所述的磁环本体为钕铁硼永磁体磁环，所述的绝缘涂层为环氧涂层，所述的防腐蚀保护膜为锌铬膜，所述的锌铬膜由以下原料烘烤而成：锌粉8-10重量份，铝粉1-2重量份，氧化铬1-2重量份，成膜助剂0.03-0.05重量份，所述的环氧涂层的厚度为50-70微米，所述的防腐蚀保护膜的厚度为50-70微米。The anti-corrosion radial anisotropy magnetic ring of the present invention is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, and the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring, the The insulating coating is an epoxy coating, the anti-corrosion protective film is a zinc chromium film, and the zinc chromium film is baked by the following materials: zinc powder 8-10 parts by weight, aluminum powder 1-2 parts by weight 1-2 parts by weight of chromium oxide, 0.03-0.05 parts by weight of a film-forming auxiliary agent, the epoxy coating layer has a thickness of 50-70 μm, and the anti-corrosion protective film has a thickness of 50-70 μm.
所述的环氧涂层的厚度与防腐蚀保护膜的厚度比为1：1。The thickness ratio of the epoxy coating to the thickness of the corrosion-resistant protective film is 1:1.
本发明的防腐蚀径向异性磁环，具有如下技术效果：能够保护钕铁硼永磁体磁环，即使受到较强的腐蚀，也不会引起磁性下降。
The anti-corrosion radial anisotropy magnetic ring of the present invention has the following technical effects: it can protect the NdFeB permanent magnet magnetic ring, and does not cause a magnetic drop even if it is subjected to strong corrosion.
实施例1Example 1
本实施例的防腐蚀径向异性磁环，从内到外，依次由磁环本体、绝缘涂层和防腐蚀保护膜组成，所述的磁环本体为钕铁硼永磁体磁环，所述的绝缘涂层为环氧涂层，所述的防腐蚀保护膜为锌铬膜，所述的锌铬膜由以下原料烘烤而成：锌粉10重量份，铝粉1重量份，氧化铬2重量份，成膜助剂0.05重量份。The anti-corrosion radial anisotropy magnetic ring of the embodiment is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, and the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring, The insulating coating is an epoxy coating, the anti-corrosion protective film is a zinc chromium film, and the zinc chromium film is baked by the following materials: 10 parts by weight of zinc powder, 1 part by weight of aluminum powder, and chromium oxide. 2 parts by weight of the film-forming auxiliary agent was 0.05 parts by weight.
所述的环氧涂层的厚度为50微米；所述的氮化钛涂层的厚度为50微米。The epoxy coating has a thickness of 50 microns; the titanium nitride coating has a thickness of 50 microns.
实施例2Example 2
本实施例的防腐蚀径向异性磁环，从内到外，依次由磁环本体、绝缘涂层和防腐蚀保护膜组成，所述的磁环本体为钕铁硼永磁体磁环，所述的绝缘涂层为环氧涂层，所述的防腐蚀保护膜为锌铬膜，所述的锌铬膜由以下原料烘烤而成：锌粉8重量份，铝粉2重量份，氧化铬1重量份，成膜助剂0.03重量份。The anti-corrosion radial anisotropy magnetic ring of the embodiment is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, and the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring, The insulating coating is an epoxy coating, the anti-corrosion protective film is a zinc chromium film, and the zinc chromium film is baked from the following raw materials: 8 parts by weight of zinc powder, 2 parts by weight of aluminum powder, and chromium oxide. 1 part by weight of a film-forming auxiliary agent was 0.03 part by weight.
所述的环氧涂层的厚度为70微米；所述的氮化钛涂层的厚度为70微米。The epoxy coating has a thickness of 70 microns; the titanium nitride coating has a thickness of 70 microns.
实施例3Example 3
本实施例的防腐蚀径向异性磁环，从内到外，依次由磁环本体、绝缘涂层和防腐蚀保护膜组成，所述的磁环本体为钕铁硼永磁体磁环，所述的绝缘涂层为环氧涂层，所述的防腐蚀保护膜为锌铬膜，所述的锌铬膜由以下原料烘烤而成：锌粉9重量份，铝粉1.5重量份，氧化铬1.5重量份，成膜助剂0.04重量份。The anti-corrosion radial anisotropy magnetic ring of the embodiment is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, and the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring, The insulating coating is an epoxy coating, the anti-corrosion protective film is a zinc chromium film, and the zinc chromium film is baked from the following raw materials: 9 parts by weight of zinc powder, 1.5 parts by weight of aluminum powder, and chromium oxide. 1.5 parts by weight of a film-forming auxiliary agent was 0.04 parts by weight.
所述的环氧涂层的厚度为60微米；所述的氮化钛涂层的厚度为60微米。
The epoxy coating has a thickness of 60 microns; the titanium nitride coating has a thickness of 60 microns.
Claims (2)
- 一种防腐蚀径向异性磁环，其特征在于，从内到外，依次由磁环本体、绝缘涂层和防腐蚀保护膜组成，所述的磁环本体为钕铁硼永磁体磁环，所述的绝缘涂层为环氧涂层，所述的防腐蚀保护膜为锌铬膜，所述的锌铬膜由以下原料烘烤而成：锌粉8-10重量份，铝粉1-2重量份，氧化铬1-2重量份，成膜助剂0.03-0.05重量份，所述的环氧涂层的厚度为50-70微米；所述的防腐蚀保护膜的厚度为50-70微米。An anti-corrosion radial anisotropic magnetic ring, which is composed of a magnetic ring body, an insulating coating and an anti-corrosion protective film from the inside to the outside, wherein the magnetic ring body is a neodymium-iron-boron permanent magnet magnetic ring. The insulating coating is an epoxy coating, the anti-corrosion protective film is a zinc chromium film, and the zinc chromium film is baked by the following raw materials: zinc powder 8-10 parts by weight, aluminum powder 1- 2 parts by weight, 1-2 parts by weight of chromium oxide, 0.03-0.05 parts by weight of the film-forming auxiliary agent, the epoxy coating layer has a thickness of 50-70 micrometers; and the anti-corrosion protective film has a thickness of 50-70 Micron.
- 根据权利要求1所述的防腐蚀径向异性磁环，其特征在于，所述的环氧涂层的厚度与防腐蚀保护膜的厚度比为1：1。 The anti-corrosive radial anisotropic magnetic ring according to claim 1, wherein a thickness ratio of said epoxy coating to said corrosion-resistant protective film is 1:1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510244880.1 | 2015-05-14 | ||
| CN201510244880.1A CN104795199A (en) | 2015-05-14 | 2015-05-14 | Corrosion-proof radial-anisotropy magnetic ring |
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| WO2016179998A1 true WO2016179998A1 (en) | 2016-11-17 |
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| WO (1) | WO2016179998A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104795199A (en) * | 2015-05-14 | 2015-07-22 | 海安县巨力磁材有限责任公司 | Corrosion-proof radial-anisotropy magnetic ring |
| CN105070459A (en) * | 2015-08-10 | 2015-11-18 | 海安县巨力磁材有限责任公司 | Surface corrosion-prevention radial anisotropic magnetic ring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653643A (en) * | 2012-04-24 | 2012-09-05 | 包头稀土研究院 | Zinc-based composite coating for improving corrosion resistance of neodymium-iron-boron magnet |
| CN104004397A (en) * | 2013-09-18 | 2014-08-27 | 中磁科技股份有限公司 | Masking liquid used for surface protection of neodymium iron boron magnet, and preparation method thereof |
| CN104575924A (en) * | 2015-02-11 | 2015-04-29 | 海安县巨力磁材有限责任公司 | Rust-resistance radial heterogenous magnetic ring |
| CN104795199A (en) * | 2015-05-14 | 2015-07-22 | 海安县巨力磁材有限责任公司 | Corrosion-proof radial-anisotropy magnetic ring |
-
2015
- 2015-05-14 CN CN201510244880.1A patent/CN104795199A/en active Pending
- 2015-11-19 WO PCT/CN2015/095045 patent/WO2016179998A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653643A (en) * | 2012-04-24 | 2012-09-05 | 包头稀土研究院 | Zinc-based composite coating for improving corrosion resistance of neodymium-iron-boron magnet |
| CN104004397A (en) * | 2013-09-18 | 2014-08-27 | 中磁科技股份有限公司 | Masking liquid used for surface protection of neodymium iron boron magnet, and preparation method thereof |
| CN104575924A (en) * | 2015-02-11 | 2015-04-29 | 海安县巨力磁材有限责任公司 | Rust-resistance radial heterogenous magnetic ring |
| CN104795199A (en) * | 2015-05-14 | 2015-07-22 | 海安县巨力磁材有限责任公司 | Corrosion-proof radial-anisotropy magnetic ring |
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| CN104795199A (en) | 2015-07-22 |
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