JP2003332115A - Bonded soft magnetic body with excellent mechanical strength and cavitation damage resistance at room temperature and high temperature and its fabricating method - Google Patents
Bonded soft magnetic body with excellent mechanical strength and cavitation damage resistance at room temperature and high temperature and its fabricating methodInfo
- Publication number
- JP2003332115A JP2003332115A JP2002133704A JP2002133704A JP2003332115A JP 2003332115 A JP2003332115 A JP 2003332115A JP 2002133704 A JP2002133704 A JP 2002133704A JP 2002133704 A JP2002133704 A JP 2002133704A JP 2003332115 A JP2003332115 A JP 2003332115A
- Authority
- JP
- Japan
- Prior art keywords
- soft magnetic
- resin
- powder
- mass
- magnetic material
- 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.)
- Abandoned
Links
- 229920005989 resin Polymers 0.000 claims abstract description 54
- 239000011347 resin Substances 0.000 claims abstract description 54
- 239000006247 magnetic powder Substances 0.000 claims abstract description 34
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 29
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 29
- 229910017061 Fe Co Inorganic materials 0.000 claims abstract description 28
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 7
- 239000011737 fluorine Substances 0.000 claims abstract description 7
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 239000000696 magnetic material Substances 0.000 claims description 47
- 239000000843 powder Substances 0.000 claims description 46
- 238000002156 mixing Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 235000021355 Stearic acid Nutrition 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 8
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 8
- 239000008117 stearic acid Substances 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- -1 polyphenylene Polymers 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 238000010306 acid treatment Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MVEOHWRUBFWKJY-UHFFFAOYSA-N 7-hydroxynaphthalene-2-sulfonic acid Chemical compound C1=CC(S(O)(=O)=O)=CC2=CC(O)=CC=C21 MVEOHWRUBFWKJY-UHFFFAOYSA-N 0.000 description 1
- 102100032566 Carbonic anhydrase-related protein 10 Human genes 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910017112 Fe—C Inorganic materials 0.000 description 1
- 101000867836 Homo sapiens Carbonic anhydrase-related protein 10 Proteins 0.000 description 1
- 101000946889 Homo sapiens Monocyte differentiation antigen CD14 Proteins 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 102100035877 Monocyte differentiation antigen CD14 Human genes 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、室温および高温
において優れた機械的強度を有し、さらに耐キャビテー
ション損傷性にも優れたボンド軟磁性体およびその製造
方法に関するものであり、このボンド軟磁性体は特に流
体に直接接触するインジェクター部品、特にインジェク
ターのコアの製造に使用されるものである。TECHNICAL FIELD The present invention relates to a bond soft magnetic material having excellent mechanical strength at room temperature and high temperature and also excellent in cavitation damage resistance, and a method for producing the same. The body is especially used for the production of injector parts which come into direct contact with fluids, in particular the core of the injector.
【０００２】[0002]
【従来の技術】一般に、自動車用エンジンの電子制御式
燃料噴射装置におけるインジェクターの材料として低炭
素鋼、快削電磁ステンレス鋼などが使用されていた。し
かし、近年、自動車の電子制御式燃料噴射装置における
インジェクター部品に周波数特性が優れ、小型化のため
の設計自由度の高いＦｅ−Ｃｏ系軟磁性粉末を樹脂で固
めたボンド軟磁性体が使用されるようになって来た。2. Description of the Related Art Generally, low carbon steel, free-cutting electromagnetic stainless steel, etc. have been used as materials for injectors in electronically controlled fuel injection systems for automobile engines. However, in recent years, a bond soft magnetic material obtained by hardening Fe-Co based soft magnetic powder with a resin having excellent frequency characteristics and high design flexibility for downsizing has been used for injector parts in an electronically controlled fuel injection device for automobiles. It started to come.
【０００３】従来のボンド軟磁性体は、Ｆｅ−Ｃｏ系軟
磁性粉末に熱可塑性樹脂または熱硬化性樹脂を添加・混
合したのち、圧粉成形して所定形状の成形体を作製し、
その後この成形体を硬化させることにより製造する。前
記熱可塑性樹脂としてはポリフェニルエーテル樹脂、ポ
リエーテルイミド樹脂などが使用されており、さらに、
熱硬化性樹脂としてフェノール樹脂、エポキシ樹脂が使
用されることは知られている。前記Ｆｅ−Ｃｏ系軟磁性
粉末としては、Ｃｏ：１０〜６０質量％を含有し残部が
Ｆｅおよび不可避不純物からなるＦｅ−Ｃｏ合金粉末、
Ｃｏ：４０〜６０質量％、Ｖ：０．１〜３質量％を含有
し残部がＦｅおよび不可避不純物からなるＦｅ−Ｃｏ合
金粉末などが知られている。In the conventional bond soft magnetic material, a thermoplastic resin or a thermosetting resin is added to and mixed with Fe--Co based soft magnetic powder, and then the powder is compacted to prepare a compact having a predetermined shape.
After that, the molded body is cured to manufacture. As the thermoplastic resin, a polyphenyl ether resin, a polyetherimide resin or the like is used, and further,
It is known that a phenol resin or an epoxy resin is used as the thermosetting resin. As the Fe-Co soft magnetic powder, an Fe-Co alloy powder containing Co: 10 to 60 mass% and the balance Fe and inevitable impurities,
An Fe-Co alloy powder containing Co: 40 to 60 mass% and V: 0.1 to 3 mass% with the balance being Fe and inevitable impurities is known.
【０００４】さらに、前記Ｆｅ−Ｃｏ系軟磁性粉末とし
てＦｅ−Ｃｏ系軟磁性粉末にリン酸処理を施すことによ
り表面に絶縁性のリン酸皮膜を形成したＦｅ−Ｃｏ系軟
磁性粉末、またはＦｅ−Ｃｏ系軟磁性粉末にスチーム処
理を施すことにより表面に絶縁性の水酸化膜を形成した
絶縁皮膜を形成したＦｅ−Ｃｏ系軟磁性粉末が用いられ
ており、このように絶縁皮膜を形成したＦｅ−Ｃｏ系軟
磁性粉末を使用して製造したボンド軟磁性体は渦電流損
失が一層少なくなるといわれている。これら絶縁皮膜を
形成したＦｅ−Ｃｏ系軟磁性粉末に、熱可塑性樹脂粉末
または熱硬化性樹脂粉末を添加・混合したのち、圧粉成
形して所定形状の成形体を作製し、その後この成形体を
樹脂硬化させることによりボンド軟磁性体またはボンド
軟磁性体からなるインジェクター部品を製造している。
前記成形体は軟磁性粉末に樹脂を添加・混合してコンパ
ウンドを作製し、このコンパウンドを金型に充填し、プ
レス成形して所定形状のボンド軟磁性体またはボンド軟
磁性体からなるインジェクター部品を作製することもで
きる。Further, as the Fe—Co based soft magnetic powder, Fe—Co based soft magnetic powder is subjected to phosphoric acid treatment to form an insulating phosphoric acid film on the surface, or Fe—Co based soft magnetic powder or Fe. An Fe-Co soft magnetic powder having an insulating film having an insulating hydroxide film formed on the surface thereof by performing a steam treatment on the -Co soft magnetic powder is used. It is said that the bond soft magnetic material produced by using the Fe-Co soft magnetic powder has a further reduced eddy current loss. A thermoplastic resin powder or a thermosetting resin powder is added to and mixed with the Fe-Co soft magnetic powder on which the insulating film is formed, and then the powder is compacted to produce a compact having a predetermined shape, and then the compact. The resin is cured to produce a bond soft magnetic material or an injector part made of the bond soft magnetic material.
The molded body is prepared by adding and mixing a resin to soft magnetic powder to prepare a compound, filling the compound in a mold, and press-molding to form a bond soft magnetic body having a predetermined shape or an injector part made of the bond soft magnetic body. It can also be made.
【０００５】[0005]
【発明が解決しようとする課題】これらボンド軟磁性体
からなるインジェクター部品は、室温および高温に曝さ
れながら機械的負荷がかかるので、室温のみならず高温
において機械的強度に優れ、同時に流体に曝されるので
キャビテーション損傷（流速が局所的に高くなったり低
くなったりするところでは、流速が局所的に高くなる部
分では流体の静圧低下が生じて沸騰現象が起こって気泡
が生成し、一方、流速が低い高圧部分では気泡の崩壊が
生じ、この気泡の発生および消滅による衝撃圧によって
受ける損傷を一般にキャビテーション損傷と言われてい
る）に耐えうることが必要であるとされている。しか
し、従来のボンド軟磁性体からなるインジェクター部品
はこのキャビテーション損傷に十分に耐えうるものはな
く、寿命が短いのが欠点であった。Since the injector parts made of these bond soft magnetic materials are subjected to mechanical load while being exposed to room temperature and high temperature, they are excellent in mechanical strength not only at room temperature but also at high temperature, and at the same time exposed to fluid. Cavitation damage (where the flow velocity locally rises or falls, where the flow velocity locally rises, the static pressure of the fluid decreases, causing a boiling phenomenon to generate bubbles, while It is said that it is necessary to withstand the damage caused by the impact pressure due to the generation and disappearance of the bubbles in the high-pressure portion where the flow velocity is low, and the damage caused by the impact pressure due to the generation and disappearance of the bubbles). However, none of the conventional injector parts made of bond soft magnetic material can withstand this cavitation damage, and its short life is a drawback.
【０００６】[0006]
【課題を解決するための手段】そこで、本発明者等は、
室温だけでなく高温における機械的強度に優れ、かつ耐
キャビテーション損傷性にも優れたボンド軟磁性体を製
造すべく研究を行った。その結果、（イ）絶縁皮膜を形
成したＦｅ−Ｃｏ系軟磁性粉末をポリフェニレンサルフ
ァイドとフッ素樹脂との混合樹脂で固めたボンド軟磁性
体は、ポリフェニレンサルファイド単体で固めたボンド
軟磁性体に比べて耐キャビテーション損傷性に優れてお
り、さらに軟磁性粉末をフッ素樹脂単体で固めたボンド
軟磁性体に比べて室温および高温における機械的強度が
優れている、（ロ）前記絶縁皮膜を形成したＦｅ−Ｃｏ
系軟磁性粉末を固めるために使用するポリフェニレンサ
ルファイドとフッ素樹脂との混合樹脂粉末の量は、０．
２質量％未満添加しただけでは十分な耐キャビテーショ
ン損傷性が得られず、一方、２質量％を越えて添加する
と耐熱強度が落ちるところから、０．１〜２質量％あれ
ばよく、前記混合樹脂粉末の量の一層好ましい範囲は
０．３〜１．０質量％である、という研究結果が得られ
たのである。Therefore, the present inventors have
Research was carried out to manufacture a bonded soft magnetic material having excellent mechanical strength not only at room temperature but also at high temperature and excellent in cavitation damage resistance. As a result, (a) the bond soft magnetic material obtained by hardening the Fe-Co-based soft magnetic powder having the insulating film with a mixed resin of polyphenylene sulfide and a fluororesin is compared to the bond soft magnetic material hardened with polyphenylene sulfide alone. It has excellent resistance to cavitation damage, and is superior in mechanical strength at room temperature and high temperature to a bonded soft magnetic material obtained by solidifying a soft magnetic powder with a fluororesin alone. (B) Fe-formed with the insulating film Co
The amount of the mixed resin powder of polyphenylene sulfide and fluororesin used for solidifying the soft magnetic powder is 0.
Sufficient cavitation damage resistance cannot be obtained only by adding less than 2% by mass, while heat resistance strength decreases by adding over 2% by mass. Therefore, 0.1-2% by mass is sufficient. The research results were obtained that a more preferable range of the amount of powder is 0.3 to 1.0% by mass.
【０００７】この発明は、かかる研究結果に基づいてな
されたものであって、（１）絶縁皮膜を形成したＦｅ−
Ｃｏ系軟磁性粉末を０．１〜２質量％の樹脂で固めたボ
ンド軟磁性体であって、前記樹脂は、ポリフェニレンサ
ルファイドとフッ素樹脂との混合樹脂である室温および
高温における機械的強度並びに耐キャビテーション損傷
性が共に優れたボンド軟磁性体、に特徴を有するもので
ある。The present invention has been made based on the results of such research, and (1) Fe- with an insulating film formed thereon
A bond soft magnetic material obtained by solidifying Co-based soft magnetic powder with a resin of 0.1 to 2% by mass, wherein the resin is a mixed resin of polyphenylene sulfide and a fluororesin, and has high mechanical strength and resistance to room temperature and high temperature. It is characterized by a bond soft magnetic material having excellent cavitation damage.
【０００８】前記ポリフェニレンサルファイドとフッ素
樹脂との混合樹脂は、ポリフェニレンサルファイド／フ
ッ素樹脂＝０．４〜２（さらに好ましくは０．８〜１．
５）の質量配合比で配合し混合した混合樹脂であること
が好ましい。その理由は、ポリフェニレンサルファイド
／フッ素樹脂が０．４未満では十分な耐熱強度が得られ
ず、一方、ポリフェニレンサルファイド／フッ素樹脂が
２を越えて添加すると耐キャビテーション損傷性が落ち
るので好ましくないことによるものである。The mixed resin of the polyphenylene sulfide and the fluororesin is polyphenylene sulfide / fluororesin = 0.4 to 2 (more preferably 0.8 to 1.
It is preferable that the mixed resin is prepared by mixing and mixing in the mass ratio of 5). The reason is that when the polyphenylene sulfide / fluorine resin is less than 0.4, sufficient heat resistance cannot be obtained, while when the polyphenylene sulfide / fluorine resin is added in excess of 2, the cavitation damage resistance decreases, which is not preferable. Is.
【０００９】したがって、この発明は、（２）絶縁皮膜
を形成したＦｅ−Ｃｏ系軟磁性粉末を０．１〜２質量％
の樹脂で固めたボンド軟磁性体であって、前記樹脂は、
ポリフェニレンサルファイド／フッ素樹脂＝０．４〜２
の質量配合比で混合した混合樹脂である室温および高温
における機械的強度並びに耐キャビテーション損傷性が
共に優れたボンド軟磁性体、に特徴を有するものであ
る。Therefore, according to the present invention, (2) 0.1 to 2% by mass of Fe-Co type soft magnetic powder having an insulating film formed thereon is used.
A bond soft magnetic material hardened with the resin of, wherein the resin is
Polyphenylene sulfide / fluorine resin = 0.4-2
The bond soft magnetic material is excellent in both mechanical strength and cavitation damage resistance at room temperature and high temperature, which is a mixed resin mixed in a mass mixing ratio of.
【００１０】この発明で使用される絶縁皮膜を形成した
Ｆｅ−Ｃｏ系軟磁性粉末は、Ｃｏ：１０〜６０質量％を
含有し、残部がＦｅおよび不可避不純物からなる組成、
またはＣｏ：１０〜６０質量％、Ｖ：０．１〜３質量％
を含有し、残部がＦｅおよび不可避不純物からなる組成
を有するＦｅ−Ｃｏ系軟磁性粉末の表面にリン酸処理を
施すことにより表面に絶縁性のリン酸皮膜を形成した軟
磁性粉末またはスチーム処理を施すことにより表面に絶
縁性の水酸化膜を形成した軟磁性粉末である。この絶縁
皮膜を形成した軟磁性粉末を用いることにより渦電流損
失の少ないボンド軟磁性体が得られる。The Fe-Co type soft magnetic powder having the insulating film formed therein used in the present invention contains Co: 10 to 60% by mass, and the balance is Fe and inevitable impurities.
Or Co: 10 to 60 mass%, V: 0.1 to 3 mass%
A soft magnetic powder or a steam treatment in which an insulating phosphoric acid film is formed on the surface of the Fe-Co based soft magnetic powder having a composition containing Fe and the unavoidable impurities by the phosphoric acid treatment. It is a soft magnetic powder having an insulating hydroxide film formed on the surface by application. By using the soft magnetic powder on which this insulating film is formed, a bonded soft magnetic material with less eddy current loss can be obtained.
【００１１】この発明の室温および高温における機械的
強度並びに耐キャビテーション損傷性が共に優れたボン
ド軟磁性体を製造するには、絶縁皮膜を形成したＦｅ−
Ｃｏ系軟磁性粉末に、ポリフェニレンサルファイド粉末
およびフッ素樹脂粉末をポリフェニレンサルファイド粉
末／フッ素樹脂粉末＝０．４〜２の質量配合比で混合し
て得られた混合樹脂粉末：０．１〜２質量％、成形助剤
としてのステアリン酸：０．０５〜０．３質量％を添加
・混合したのち、圧粉成形して成形体を作製し、その後
この成形体を２５０〜３５０℃で１〜４時間加熱するこ
とにより作られる。なお、成形助剤として添加されたス
テアリン酸は、成形体を２５０〜３５０℃で１〜４時間
加熱してボンド軟磁性体を作製する際に揮発し、ボンド
軟磁性体内より除去される。In order to manufacture the bond soft magnetic material of the present invention which is excellent in both mechanical strength at room temperature and high temperature and resistance to cavitation damage, Fe-on which an insulating film is formed is used.
Mixed resin powder obtained by mixing Co-based soft magnetic powder with polyphenylene sulfide powder and fluororesin powder at a mass compounding ratio of polyphenylene sulfide powder / fluororesin powder = 0.4 to 2: 0.1 to 2 mass% Stearic acid as a molding aid: 0.05 to 0.3% by mass is added and mixed, and then powder compacted to prepare a molded body, and then this molded body is heated at 250 to 350 ° C. for 1 to 4 hours. Made by heating. The stearic acid added as a molding aid is volatilized when the molded body is heated at 250 to 350 ° C. for 1 to 4 hours to produce a bond soft magnetic body, and is removed from the bond soft magnetic body.
【００１２】したがって、この発明は、（３）絶縁皮膜
を形成したＦｅ−Ｃｏ系軟磁性粉末に、ポリフェニレン
サルファイド粉末およびフッ素樹脂粉末をポリフェニレ
ンサルファイド粉末／フッ素樹脂粉末＝０．４〜２の質
量配合比で混合して得られた混合樹脂粉末：０．１〜２
質量％、成形助剤としてのステアリン酸：０．０５〜
０．３質量％を添加・混合したのち、圧粉成形して成形
体を作製し、その後この成形体を２５０〜３５０℃で１
〜４時間加熱する室温および高温における機械的強度並
びに耐キャビテーション損傷性が共に優れたボンド軟磁
性体の製造方法、に特徴を有するものである。Therefore, according to the present invention, (3) polyphenylene sulfide powder and fluororesin powder are mass-blended with polyphenylene sulfide powder / fluororesin powder = 0.4 to 2 with Fe-Co type soft magnetic powder having an insulating film formed thereon. Mixed resin powder obtained by mixing in a ratio: 0.1-2
% By mass, stearic acid as a molding aid: 0.05 to
After adding and mixing 0.3% by mass, powder compacting is performed to produce a molded body, and then this molded body is heated at 250 to 350 ° C. for 1 hour.
The present invention is characterized by a method for producing a bond soft magnetic material which is excellent in both mechanical strength and cavitation damage resistance at room temperature and high temperature for heating for 4 hours.
【００１３】この発明のボンド軟磁性体は、特にインジ
ェクター部品の材料として適している。したがって、こ
の発明は、（４）絶縁皮膜を形成したＦｅ−Ｃｏ系軟磁
性粉末を０．１〜２質量％の樹脂で固めたボンド軟磁性
体からなるインジェクター部品であって、前記樹脂はポ
リフェニレンサルファイドとフッ素樹脂を混合した混合
樹脂である室温および高温における機械的強度並びに耐
キャビテーション損傷性が共に優れたボンド軟磁性体か
らなるインジェクター部品、（５）絶縁皮膜を形成した
Ｆｅ−Ｃｏ系軟磁性粉末を０．１〜２質量％の樹脂で固
めたボンド軟磁性体からなるインジェクター部品であっ
て、前記樹脂はポリフェニレンサルファイド／フッ素樹
脂＝０．４〜２の質量配合比で混合した混合樹脂である
室温および高温における機械的強度並びに耐キャビテー
ション損傷性が共に優れたボンド軟磁性体からなるイン
ジェクター部品、（６）絶縁皮膜を形成したＦｅ−Ｃｏ
系軟磁性粉末に、ポリフェニレンサルファイド粉末およ
びフッ素樹脂粉末をポリフェニレンサルファイド粉末／
フッ素樹脂粉末＝０．４〜２の質量配合比で混合して得
られた混合樹脂粉末：０．１〜２質量％、成形助剤とし
てのステアリン酸：０．０５〜０．３質量％を添加・混
合したのち、圧粉成形してインジェクター部品成形体を
作製し、その後この成形体を２５０〜３５０℃で１〜４
時間加熱する室温および高温における機械的強度並びに
耐キャビテーション損傷性が共に優れたボンド軟磁性体
からなるインジェクター部品の製造方法、に特徴を有す
るものである。The bond soft magnetic material of the present invention is particularly suitable as a material for injector parts. Therefore, the present invention is (4) an injector part made of a bond soft magnetic material obtained by solidifying Fe-Co based soft magnetic powder having an insulating coating with a resin of 0.1 to 2 mass%, wherein the resin is polyphenylene. Injector parts made of bond soft magnetic material, which is a mixed resin of sulfide and fluororesin and has excellent mechanical strength and cavitation damage resistance at room temperature and high temperature, (5) Fe-Co soft magnetic material with an insulating film formed An injector part made of a bond soft magnetic material obtained by solidifying a powder with a resin of 0.1 to 2 mass%, wherein the resin is a mixed resin obtained by mixing polyphenylene sulfide / fluorine resin at a mass compounding ratio of 0.4 to 2. Inge made of bond soft magnetic material with excellent mechanical strength and cavitation damage resistance at room temperature and high temperature. Compactors parts, Fe-Co was formed (6) insulating film
-Based soft magnetic powder, polyphenylene sulfide powder and fluororesin powder to polyphenylene sulfide powder /
Fluororesin powder = mixed resin powder obtained by mixing in a mass mixing ratio of 0.4 to 2: 0.1 to 2 mass%, stearic acid as a molding aid: 0.05 to 0.3 mass% After adding and mixing, powder compacting is performed to produce an injector part molded body, and this molded body is then heated at 250 to 350 ° C. for 1 to 4 times.
It is characterized by a method for producing an injector part made of a bond soft magnetic material which is excellent in both mechanical strength and cavitation damage resistance at room temperature and high temperature which are heated for a long time.
【００１４】[0014]
【発明の実施の形態】Ｆｅ−Ｃｏ系軟磁性粉末として、
表１に示される成分組成および平均粒径を有するＦｅ−
Ｃｏ合金粉末を用意し、これらＦｅ−Ｃｏ系軟磁性粉末
をリン酸処理またはスチーム処理を施すことにより絶縁
皮膜形成Ｆｅ−Ｃｏ合金粉末Ａ〜Ｆを用意した。さら
に、樹脂原料粉末としてポリフェニレンサルファイド粉
末およびフッ素樹脂として代表的なポリ四フッ化エチレ
ンの粉末を用意し、さらに成形助剤としてステアリン酸
を用意した。BEST MODE FOR CARRYING OUT THE INVENTION As a Fe-Co soft magnetic powder,
Fe- having the composition and average particle size shown in Table 1
Co alloy powders were prepared, and Fe—Co soft magnetic powders were subjected to phosphoric acid treatment or steam treatment to prepare insulating film forming Fe—Co alloy powders A to F. Further, polyphenylene sulfide powder as a resin raw material powder and polytetrafluoroethylene powder representative as a fluororesin were prepared, and stearic acid was further prepared as a molding aid.
【００１５】これら樹脂を表２〜３に示されるポリフェ
ニレンサルファイド粉末／ポリ四フッ化エチレン粉末の
質量配合比となるように配合し、混合して混合樹脂粉末
を作製し、これら混合樹脂粉末に絶縁皮膜形成Ｆｅ−Ｃ
ｏ合金粉末Ａ〜Ｆおよびステアリン酸を表２〜３に示さ
れる割合に配合し、混合したのち金型に充填し、圧力：
６ton ／cm2 で圧縮成形することにより成形体を作製
し、ついでこの成形体を大気中、温度：２５０℃、１．
５時間保持の加熱を行って縦：１０mm、横：５mm、長
さ：４０mmの寸法を有する本発明ボンド軟磁性体１〜１
４、比較ボンド軟磁性体１〜２および従来ボンド軟磁性
体１〜２からなる試験片を作製した。These resins are blended so as to have a mass blending ratio of polyphenylene sulfide powder / polytetrafluoroethylene powder shown in Tables 2 and 3, and mixed to prepare mixed resin powders, which are then insulated. Film formation Fe-C
o Alloy powders A to F and stearic acid were mixed in the proportions shown in Tables 2 to 3, mixed and then filled in a mold, and pressure:
A molded body is produced by compression molding at 6 ton / cm 2 , and then the molded body is exposed to the air at a temperature of 250 ° C.
Bond soft magnetic materials 1 to 1 of the present invention having dimensions of length: 10 mm, width: 5 mm, and length: 40 mm after heating for 5 hours.
4. Test pieces made of the comparative bond soft magnetic materials 1-2 and the conventional bond soft magnetic materials 1-2 were prepared.
【００１６】さらに、得られた本発明ボンド軟磁性体１
〜１４、比較ボンド軟磁性体１〜２および従来ボンド軟
磁性体１〜２からなる試験片を用い、室温および２００
℃における３点曲げ試験を行ない、その測定結果を表２
〜３に示した。さらに、本発明ボンド軟磁性体１〜１
４、比較ボンド軟磁性体１〜２および従来ボンド軟磁性
体１〜２からなる試験片を図１に示される常温の蒸留水
中に載置し、この蒸留水中の試験片に、振動子に接続し
た超音波ホーンを近接させ、超音波ホーンを振幅：２０
μｍ、振動数２０ｋＨｚで１時間保持することによりキ
ャビテーション損傷試験を行い、試験後に試験片にキャ
ビテーション損傷が発生しているか否かを拡大鏡を用い
て目視にて観察し、その結果を表２〜３に示した。Further, the obtained bonded soft magnetic material 1 of the present invention
-14, comparative bond soft magnetic bodies 1-2 and conventional bond soft magnetic bodies 1-2 were used at room temperature and 200
A three-point bending test at ℃ was performed, and the measurement results are shown in Table 2.
~ 3. Furthermore, the bond soft magnetic materials 1 to 1 of the present invention
4. A test piece composed of the comparative bond soft magnetic materials 1-2 and the conventional bond soft magnetic materials 1-2 was placed in distilled water at room temperature shown in FIG. 1, and the test piece in the distilled water was connected to a vibrator. Place the ultrasonic horns close to each other, and set the ultrasonic horn to an amplitude of 20.
A cavitation damage test is conducted by holding the microtitre plate at a frequency of 20 kHz for 1 hour, and after the test, it is visually observed with a magnifying glass whether or not cavitation damage has occurred in the test piece, and the results are shown in Table 2 Shown in 3.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【表２】 [Table 2]
【００１９】[0019]
【表３】 [Table 3]
【００２０】表１〜３に示される結果から、ポリフェニ
レンサルファイドおよびポリ四フッ化エチレンを共に含
む本発明ボンド軟磁性体１〜１４は、室温および２００
℃における曲げ強度が共に優れ、さらにキャビテーショ
ン損傷が無いのに対し、ポリフェニレンサルファイドを
単体で含む従来ボンド軟磁性体１はキャビテーション損
傷が発生し、一方、ポリ四フッ化エチレン単体で含む従
来ボンド軟磁性体２は室温における曲げ強度が小さくキ
ャビテーション損傷が発生するので好ましくないことが
わかる。また、この発明の条件から外れた比較ボンド軟
磁性体１〜２は、２００℃における曲げ強度が劣るか、
またはキャビテーション損傷が発生するなどして好まし
くないことがわかる。From the results shown in Tables 1 to 3, the bond soft magnetic materials 1 to 14 of the present invention containing both polyphenylene sulfide and polytetrafluoroethylene were used at room temperature and 200.
The bending strength at ℃ is both excellent and there is no cavitation damage, whereas the conventional bond soft magnetic material 1 containing polyphenylene sulfide alone has cavitation damage, while the conventional bond soft magnetic material containing polytetrafluoroethylene alone. It is understood that the body 2 is not preferable because the bending strength at room temperature is small and cavitation damage occurs. Further, the comparative bond soft magnetic materials 1 and 2 which are out of the conditions of the present invention have a poor bending strength at 200 ° C.,
Also, it can be seen that cavitation damage occurs, which is not preferable.
【００２１】[0021]
【発明の効果】上述のように、この発明のボンド軟磁性
体は、室温だけでなく高温において優れた強度を有し、
さらに耐キャビテーション損傷性を有するので、室温か
ら高温に亘るから広範囲の温度領域において使用する自
動車部品、その内でも特に流体に直接接触するインジェ
クター部品、特にインジェクターのコアの製造に使用す
る素材として優れた効果をもたらすものである。As described above, the bond soft magnetic material of the present invention has excellent strength not only at room temperature but also at high temperature.
Furthermore, since it has cavitation damage resistance, it is excellent as a material used for manufacturing automobile parts used in a wide temperature range from room temperature to high temperature, in particular, injector parts that come into direct contact with fluid, especially injector cores. It has an effect.
【図１】この発明の実施例における耐キャビテーション
損傷性を調べるための試験方法を示す概略図である。FIG. 1 is a schematic diagram showing a test method for investigating cavitation damage resistance in an example of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０２Ｍ 51/06 Ｆ０２Ｍ 51/06 Ａ Ｓ Ｈ０１Ｆ 1/26 Ｈ０１Ｆ 1/26 (72)発明者 森本 耕一郎 新潟県新潟市小金町３−１ 三菱マテリア ル株式会社新潟製作所内 Ｆターム(参考） 3G066 BA38 BA44 CC08U CD14 CE23 4K018 AA10 AA25 BA16 BC28 BC32 BD01 CA08 DA21 HA01 KA07 KA46 5E041 AA11 AA14 BB03 BC01 BC08 CA10 HB17 NN01 NN04 NN06 NN18 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) F02M 51/06 F02M 51/06 AS H01F 1/26 H01F 1/26 (72) Inventor Koichiro Morimoto Niigata 3-1 Koganecho, Niigata City Mitsubishi Material Co., Ltd. Niigata Factory F-term (reference) 3G066 BA38 BA44 CC08U CD14 CE23 4K018 AA10 AA25 BA16 BC28 BC32 BD01 CA08 DA21 HA01 KA07 KA46 5E041 AA11 AA14 BB03 BC01 BC08 CA10 HB17 NN01 NN18NN04 NN04NN18NN
Claims (6)
末を０．１〜２質量％の樹脂で固めたボンド軟磁性体で
あって、前記樹脂はポリフェニレンサルファイドとフッ
素樹脂を混合した混合樹脂であることを特徴とする室温
および高温における機械的強度並びに耐キャビテーショ
ン損傷性が共に優れたボンド軟磁性体。1. A bond soft magnetic material obtained by solidifying Fe-Co based soft magnetic powder having an insulating film with a resin of 0.1 to 2 mass%, wherein the resin is a mixture of polyphenylene sulfide and fluororesin. A bond soft magnetic material having excellent mechanical strength and cavitation damage resistance at room temperature and high temperature, which is a resin.
末を０．１〜２質量％の樹脂で固めたボンド軟磁性体で
あって、前記樹脂はポリフェニレンサルファイド／フッ
素樹脂＝０．４〜２の質量配合比で混合した混合樹脂で
あることを特徴とする室温および高温における機械的強
度並びに耐キャビテーション損傷性が共に優れたボンド
軟磁性体。2. A bond soft magnetic material obtained by solidifying Fe-Co based soft magnetic powder having an insulating film with a resin of 0.1 to 2% by mass, said resin being polyphenylene sulfide / fluorine resin = 0.4. A bond soft magnetic material having excellent mechanical strength and cavitation damage resistance at room temperature and high temperature, which is a mixed resin mixed at a mass mixing ratio of 2 to 2.
末に、いずれも総量でポリフェニレンサルファイド粉末
およびフッ素樹脂粉末をポリフェニレンサルファイド粉
末／フッ素樹脂粉末＝０．４〜２の質量配合比で混合し
て得られた混合樹脂粉末：０．１〜２質量％並びに成形
助剤としてのステアリン酸：０．０５〜０．３質量％を
添加・混合したのち、圧粉成形して成形体を作製し、そ
の後この成形体を２５０〜３５０℃で１〜４時間加熱す
ることを特徴とする室温および高温における機械的強度
並びに耐キャビテーション損傷性が共に優れたボンド軟
磁性体の製造方法。3. A Fe-Co soft magnetic powder having an insulating film formed thereon is mixed with a total amount of polyphenylene sulfide powder and fluororesin powder at a mass mixing ratio of polyphenylene sulfide powder / fluororesin powder = 0.4 to 2. The resulting mixed resin powder: 0.1 to 2 mass% and stearic acid as a molding aid: 0.05 to 0.3 mass% are added and mixed, and then compacted to prepare a molded body. Then, the molded body is heated at 250 to 350 ° C. for 1 to 4 hours, and a method for producing a bond soft magnetic body having excellent mechanical strength at room temperature and high temperature and excellent cavitation damage resistance.
末を０．１〜２質量％の樹脂で固めたボンド軟磁性体か
らなるインジェクター部品であって、前記樹脂はポリフ
ェニレンサルファイドとフッ素樹脂を混合した混合樹脂
であることを特徴とする室温および高温における機械的
強度並びに耐キャビテーション損傷性が共に優れたボン
ド軟磁性体からなるインジェクター部品。4. An injector part comprising a bond soft magnetic material obtained by hardening Fe-Co type soft magnetic powder having an insulating coating with 0.1 to 2 mass% of resin, said resin being polyphenylene sulfide and fluororesin. An injector part made of a bond soft magnetic material having excellent mechanical strength and cavitation damage resistance at room temperature and high temperature, which is a mixed resin obtained by mixing.
末を０．１〜２質量％の樹脂で固めたボンド軟磁性体か
らなるインジェクター部品であって、前記樹脂はポリフ
ェニレンサルファイド／フッ素樹脂＝０．４〜２の質量
配合比で混合した混合樹脂であることを特徴とする室温
および高温における機械的強度並びに耐キャビテーショ
ン損傷性が共に優れたボンド軟磁性体からなるインジェ
クター部品。5. An injector part comprising a bond soft magnetic material obtained by solidifying an Fe—Co soft magnetic powder having an insulating coating with a resin of 0.1 to 2 mass%, wherein the resin is polyphenylene sulfide / fluorine resin. = 0.4 to 2 is a mixed resin mixed in a mass mixing ratio, and an injector part made of a bond soft magnetic material having excellent mechanical strength and cavitation damage resistance at room temperature and high temperature.
末に、ポリフェニレンサルファイド粉末およびフッ素樹
脂粉末をポリフェニレンサルファイド粉末／フッ素樹脂
粉末＝０．４〜２の質量配合比で混合して得られた混合
樹脂粉末：０．１〜２質量％、成形助剤としてのステア
リン酸：０．０５〜０．３質量％を添加・混合したの
ち、圧粉成形してインジェクター部品成形体を作製し、
その後この成形体を２５０〜３５０℃で１〜４時間加熱
することを特徴とする室温および高温における機械的強
度並びに耐キャビテーション損傷性が共に優れたボンド
軟磁性体からなるインジェクター部品の製造方法。6. An Fe-Co soft magnetic powder having an insulating film formed thereon, which is obtained by mixing polyphenylene sulfide powder and fluororesin powder at a mass compounding ratio of polyphenylene sulfide powder / fluororesin powder = 0.4 to 2. Mixed resin powder: 0.1 to 2 mass% and stearic acid as a molding aid: 0.05 to 0.3 mass% are added and mixed, and then compacted to prepare an injector part molded body,
Thereafter, the molded body is heated at 250 to 350 ° C. for 1 to 4 hours, and a method for producing an injector part made of a bond soft magnetic material having excellent mechanical strength and cavitation damage resistance at room temperature and high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002133704A JP2003332115A (en) | 2002-05-09 | 2002-05-09 | Bonded soft magnetic body with excellent mechanical strength and cavitation damage resistance at room temperature and high temperature and its fabricating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002133704A JP2003332115A (en) | 2002-05-09 | 2002-05-09 | Bonded soft magnetic body with excellent mechanical strength and cavitation damage resistance at room temperature and high temperature and its fabricating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003332115A true JP2003332115A (en) | 2003-11-21 |
Family
ID=29696585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002133704A Abandoned JP2003332115A (en) | 2002-05-09 | 2002-05-09 | Bonded soft magnetic body with excellent mechanical strength and cavitation damage resistance at room temperature and high temperature and its fabricating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003332115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005303007A (en) * | 2004-04-12 | 2005-10-27 | Sumitomo Electric Ind Ltd | Soft magnetic material, dust core, and method of manufacturing soft magnetic material |
-
2002
- 2002-05-09 JP JP2002133704A patent/JP2003332115A/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005303007A (en) * | 2004-04-12 | 2005-10-27 | Sumitomo Electric Ind Ltd | Soft magnetic material, dust core, and method of manufacturing soft magnetic material |
| JP4586399B2 (en) * | 2004-04-12 | 2010-11-24 | 住友電気工業株式会社 | Soft magnetic material, dust core, and method for producing soft magnetic material |
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