JPH01243507A - Method of preventing rust of rare earth magnet - Google Patents
Method of preventing rust of rare earth magnetInfo
- Publication number
- JPH01243507A JPH01243507A JP7109088A JP7109088A JPH01243507A JP H01243507 A JPH01243507 A JP H01243507A JP 7109088 A JP7109088 A JP 7109088A JP 7109088 A JP7109088 A JP 7109088A JP H01243507 A JPH01243507 A JP H01243507A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- rare earth
- earth magnet
- impregnated
- resin agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 22
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims description 5
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 238000007747 plating Methods 0.000 claims abstract description 7
- 238000010422 painting Methods 0.000 claims abstract description 5
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 12
- 238000004381 surface treatment Methods 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052772 Samarium Inorganic materials 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000003672 processing 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
- H01F41/026—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 protecting methods against environmental influences, e.g. oxygen, by surface treatment
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電動モータや発電機等に用いられる希土類磁
石の防錆方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for preventing rust of rare earth magnets used in electric motors, generators, etc.
〔従来技術及び発明が解決しようとする課題〕近時、電
動モータ等のヨーク内周面に組み付けられる永久磁石の
材質も、アルニコ系やフェライト系のものから、磁力特
性の優れたサマリウムやネオジウム等の希土類元素を用
いたものが採用されつつある。しかるにこれら希土類元
素を含んだ所謂希土類永久磁石は、空気中の酸素と容易
に反応して酸化され易いもの、あるいは脆（て欠は易い
もの等、磁力特性以外の点で問題になる性質がある。そ
こで従来、磁石を別途鍍金したり塗装したりして保護皮
膜で被覆していたが、これら希土類磁石は焼結品である
ため鍍金や塗装がしずらく、このため作業工程が面倒か
つ煩雑で、しかもコストアップになる詐りでなく、磁石
が組付は時に欠けてしまうこともしばしばあって、折角
の保護皮膜も充分な役割を果し得ないのが実情であり、
さらに改善する必要があった。[Prior art and problems to be solved by the invention] Recently, the materials of permanent magnets assembled on the inner peripheral surface of the yoke of electric motors, etc. have changed from alnico and ferrite to samarium and neodymium, which have excellent magnetic properties. Products using rare earth elements are being adopted. However, so-called rare earth permanent magnets containing these rare earth elements have properties that pose problems other than magnetic properties, such as those that easily react with oxygen in the air and are easily oxidized, or are easily brittle. Conventionally, magnets were plated or painted separately and coated with a protective film, but since these rare earth magnets are sintered products, plating and painting are difficult, making the work process cumbersome and complicated. However, this is not just a lie that increases costs, but the reality is that magnets often break when assembled, and even the protective film that is used at the time does not play a sufficient role.
Further improvements were needed.
本発明は、上記の如き実情に鑑み、これらの欠点を一掃
することができる希土類磁石の防錆方法を提供すること
を目的として創案されたものであって、ネオジウム等の
希土類金属を成分とじて含有し、焼結品として提供され
る希土類磁石の表面処理をするに、まず希土類磁石に樹
脂剤を含浸硬化させた後、鍍金、塗装等の表面処理を施
したことを特徴とするものである。In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a rust prevention method for rare earth magnets that can eliminate these drawbacks. The surface treatment of the rare earth magnets containing the following materials and provided as sintered products is characterized in that the rare earth magnets are first impregnated with a resin agent and hardened, and then subjected to surface treatments such as plating and painting. .
そして本発明は、この構成によって、希土類磁石の表面
を簡単かつ確実に保護することができるようにしたもの
である。With this configuration, the present invention enables the surface of the rare earth magnet to be easily and reliably protected.
次に、本発明の一実施例を図面に基づいて説明する。図
面において、１は永久磁石式電動モータに用いる磁石で
あって、該磁石１は、ネオジウム等（Ｎｄ）やサマリウ
ム（Ｓｍ）等の希土類元素を成分中に含有しているもの
であり、−船釣には焼結品として供給される。このもの
は、焼結品であるが故にミクロ的に小さな孔（ボイド）
が形成され内部まで連通状となっているが、このものに
まず樹脂剤の含浸処理がなされる。この含浸処理として
用いられる樹脂剤としては、ポリエステル系樹脂、アク
リル系樹脂等、通常知られた種々の樹脂剤を単独もしく
は混合させて用いることができるが、勿論、磁石１を変
質させないものであることは必要である。そしてその含
浸手順は、例えば磁石１を減圧雰囲気下で樹脂剤中に浸
漬し、そして加圧雰囲気下で内部まで充分樹脂剤を含浸
させ、しかる後、取出して樹脂剤を加熱する等して硬化
処理させることによって成される。この様に樹脂剤の含
浸処理が成されたものは、脆さが改善されかつ孔も塞が
れており、その後このものを、鍍金、塗装等の表面処理
をして磁石１を空気接触から保護することになる。Next, one embodiment of the present invention will be described based on the drawings. In the drawing, 1 is a magnet used in a permanent magnet type electric motor, and the magnet 1 contains rare earth elements such as neodymium (Nd) and samarium (Sm) in its components. It is supplied as a sintered product for fishing. Because this product is a sintered product, it has microscopically small pores (voids).
is formed and communicates with the inside, but this is first impregnated with a resin agent. As the resin agent used for this impregnation treatment, various commonly known resin agents such as polyester resins and acrylic resins can be used alone or in combination, but of course, it is one that does not alter the quality of the magnet 1. That is necessary. The impregnation procedure is, for example, by immersing the magnet 1 in a resin under a reduced pressure atmosphere, thoroughly impregnating the inside with the resin under a pressurized atmosphere, and then taking it out and heating the resin to harden it. This is accomplished through processing. The magnet 1 that has been impregnated with a resin agent in this way has improved brittleness and has its pores closed, and is then subjected to surface treatments such as plating or painting to prevent the magnet 1 from coming into contact with air. It will be protected.
この様に本発明においては、そのままでは酸化され易く
、しかも脆い性質のある希土類磁石ではあるが、その表
面に鍍金等の表面処理が成されて空気接触から保護され
ている。しかもこの表面処理を施す前処理として、磁石
１は樹脂剤の含浸処理をして脆性の改善と孔埋め作用と
が計られており、従って、欠けずらく、また前述した鍍
金や塗装等の表面処理も速やかにしかも焼結品にある小
孔に影響されることなく平滑に行うことができて、処理
後のものはフェライト磁石と路間等に取扱うこともでき
る。As described above, in the present invention, although the rare earth magnet is easily oxidized and brittle as it is, its surface is protected from air contact by being subjected to a surface treatment such as plating. Moreover, as a pretreatment for applying this surface treatment, the magnet 1 is impregnated with a resin agent to improve brittleness and fill holes. The treatment can be carried out quickly and smoothly without being affected by small holes in the sintered product, and the treated product can be handled between ferrite magnets and paths.
しかもこの処理方法は、特殊な装置を必要とせず汎用の
ものを使用してできるので、設備投資に負担をかける必
要もなく、安価で信頼性の高い処理ができることになる
。Moreover, this processing method does not require special equipment and can be performed using general-purpose equipment, so there is no need to invest in equipment, and the processing can be performed at low cost and with high reliability.
以上要するに、本発明は叙述の如く構成されたものであ
るから、焼結品で提供され、そして脆く酸化され易い性
質を有する希土類磁石は、前処理として樹脂剤が含浸硬
化されたものに鍍金等の表面処理が施されて空気接触か
ら保護せしめられることとなる。従って従来は特殊な表
面処理設備が必要だったものが不用となって、設備投資
の大幅な軽減が計れるうえに、汎用の表面処理設備であ
っても使用形態に合せた高品質で安定した表面処理が可
能となって、希土類磁石の汎用化に大いに寄与できるこ
とになる。In summary, since the present invention is constructed as described above, a rare earth magnet that is provided as a sintered product and has properties that are brittle and easily oxidized is impregnated with a resin agent as a pretreatment and hardened, and then plated, etc. A surface treatment is applied to protect it from air contact. This eliminates the need for special surface treatment equipment in the past, significantly reducing capital investment, and even with general-purpose surface treatment equipment, it is possible to produce high-quality and stable surfaces that match the type of use. This process will make it possible to greatly contribute to the general use of rare earth magnets.
図面は本発明に係る希土類磁石の防錆方法の一実施例を
示したものであって、第１図は処理の流れを示すブロッ
ク図である。
図中、１は磁石である。The drawings show an embodiment of the rust prevention method for rare earth magnets according to the present invention, and FIG. 1 is a block diagram showing the flow of the process. In the figure, 1 is a magnet.
Claims (1)
として提供される希土類磁石の表面処理をするに、まず
希土類磁石に樹脂剤を含浸硬化させた後、鍍金、塗装等
の表面処理を施したことを特徴とする希土類磁石の防錆
方法。To surface-treat rare-earth magnets that contain rare-earth metals such as neodymium and are provided as sintered products, first the rare-earth magnet is impregnated with a resin and hardened, and then surface-treated by plating, painting, etc. A rust prevention method for rare earth magnets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7109088A JPH01243507A (en) | 1988-03-25 | 1988-03-25 | Method of preventing rust of rare earth magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7109088A JPH01243507A (en) | 1988-03-25 | 1988-03-25 | Method of preventing rust of rare earth magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01243507A true JPH01243507A (en) | 1989-09-28 |
Family
ID=13450489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7109088A Pending JPH01243507A (en) | 1988-03-25 | 1988-03-25 | Method of preventing rust of rare earth magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01243507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0471343A (en) * | 1990-07-11 | 1992-03-05 | Sankyo Seiki Mfg Co Ltd | Small-sized motor |
-
1988
- 1988-03-25 JP JP7109088A patent/JPH01243507A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0471343A (en) * | 1990-07-11 | 1992-03-05 | Sankyo Seiki Mfg Co Ltd | Small-sized motor |
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