JP2668048B2 - Damper wedge for induction generator rotor - Google Patents
Damper wedge for induction generator rotorInfo
- Publication number
- JP2668048B2 JP2668048B2 JP63176819A JP17681988A JP2668048B2 JP 2668048 B2 JP2668048 B2 JP 2668048B2 JP 63176819 A JP63176819 A JP 63176819A JP 17681988 A JP17681988 A JP 17681988A JP 2668048 B2 JP2668048 B2 JP 2668048B2
- Authority
- JP
- Japan
- Prior art keywords
- composite material
- induction generator
- present
- rotor
- damper wedge
- 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.)
- Expired - Lifetime
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はAl合金に繊維を複合した複合材料を用いた誘
導発電機の回転子用ダンパーウエッジに関する。TECHNICAL FIELD The present invention relates to a damper wedge for a rotor of an induction generator using a composite material in which fibers are mixed with an Al alloy.
Al（アルミニウム）は、鉄鋼材料に比較して比重が著
しく低く、耐食性に富む材料であり、その特性を生かし
て耐候性材料及び航空機材料に数多く適用されている。
しかし、強度が低いため適用範囲が限られていた。Al (aluminum) is a material having a remarkably low specific gravity and a high corrosion resistance as compared with a steel material, and is widely used in weather-resistant materials and aircraft materials by utilizing its characteristics.
However, the range of application was limited due to low strength.
一方、最近Alに一方向のみに強磁性をもたせた磁気異
方性材料の開発研究が活発に行なわれている。この材料
は、非磁性体のAlに強磁性体を形成せしめるものであ
る。その強磁性体を一方向に形成せしめると、その形成
方向は強磁性を有する。このような特性を利用して、誘
導発電機の回転子に適用すると磁束が一方に制御される
と共に出力トルクの増大が計れるため、電力効率が向上
する。On the other hand, research and development on magnetic anisotropic materials in which Al has ferromagnetism in only one direction has been actively conducted recently. This material forms a ferromagnetic material on non-magnetic Al. When the ferromagnetic material is formed in one direction, the direction of the formation has ferromagnetism. When applied to the rotor of the induction generator by utilizing such characteristics, the magnetic flux is controlled to one side and the output torque can be increased, so that the power efficiency is improved.
複合材料の適用により磁気異方性を有する回転子の構
造を示す公知例が、特開昭57−46656号公報に記載され
ている。これは、第６図に示すように、誘導発電動機の
回転子12の外周面に設けた通電外被６を、透磁率が周方
向成分よりも径方向成分の方が大きくなるように、磁性
体導電材８と非磁性体導電材７とを組み合わせて磁気異
方性を与えた回転子12の構造となっている。A known example showing the structure of a rotor having magnetic anisotropy by applying a composite material is described in JP-A-57-46656. This is because, as shown in FIG. 6, the energizing jacket 6 provided on the outer peripheral surface of the rotor 12 of the induction motor is so arranged that the magnetic permeability is larger in the radial component than in the circumferential component. The rotor 12 has magnetic anisotropy by combining the body conductive material 8 and the non-magnetic body conductive material 7.
一方、最近Al粉末と強磁性体とを混合して焼結成形す
ることにより、磁性Al複合材を製造する技術が知られて
いる。On the other hand, recently, a technique for producing a magnetic Al composite material by mixing Al powder and a ferromagnetic material and sintering the mixture has been known.
しかしながら、Al粉末と強磁性体とを混合する方法で
は、複合材料の基地となるAlの融液の湯流れや反応性が
低いので、緻密に配置された繊維間に浸透しにくいため
欠陥の発生が多く、そのため複合材料の強度が低いもの
になるという問題があった。However, in the method of mixing the Al powder and the ferromagnetic material, since the molten metal flow of Al that is the base of the composite material and the reactivity are low, it is difficult to penetrate between the densely arranged fibers, so that a defect occurs. Therefore, there has been a problem that the strength of the composite material is low.
誘導発電機の回転子用ダンパーウエッジは、誘導発電
機の大容量化と共に、高強度材が要求される。更に出力
トルクの増大を図るために磁気異方性を有する構造とす
れば、高い電力効率が得られる。For the rotor damper wedge of the induction generator, a high-strength material is required along with the increase in the capacity of the induction generator. Further, if a structure having magnetic anisotropy is used to increase the output torque, high power efficiency can be obtained.
本発明の目的は、引張強度を大幅に高め、更に磁気特
性を高めた誘導発電機の回転子用ダンパーウエッジを提
供することにある。An object of the present invention is to provide a damper wedge for a rotor of an induction generator, which has a significantly improved tensile strength and magnetic properties.
本発明は、Liを0.05〜4.0重量％含むAl基合金中にNi
線が一方的に埋設され、時効硬化処理された複合材料か
らなり、前記Ni線の長手方向が径方向に配列されている
ことを特徴とする誘導発電機の回転子用ダンパーウエッ
ジである。The present invention relates to an Ni-based alloy containing 0.05 to 4.0% by weight of Li.
A damper wedge for a rotor of an induction generator, characterized in that a wire is unilaterally embedded and is made of a composite material that has been subjected to age hardening treatment, and that the longitudinal direction of the Ni wire is arranged in a radial direction.
上記のように構成された複合材料の基地は、AlにLiを
含めたAl合金であるので、その溶融金属の湯流れや反応
性が高まる。そのため、繊維間に溶融金属がくまなく行
き渡るとともに、繊維と溶融金属との界面が反応して、
両者の結合性を高める。Since the matrix of the composite material configured as described above is an Al alloy containing Al and Li, the molten metal flow and reactivity are increased. Therefore, the molten metal spreads all over the fiber, and the interface between the fiber and the molten metal reacts,
Improve the bondability of both.
AlにLiが含まれると、Al3Liの析出物が形成され、Al
に比べて著しく強度の高いAl合金の基地となる。その含
有量は0.05〜4.0重量％が好ましい。含有量が0.05％未
満ではその効果がなく、４％を超えると反応性が激しく
なり繊維を過剰に侵食する。その含有量は0.5〜3.5％が
好ましく、特に１〜３％が望ましい。When Li is contained in Al, a precipitate of Al 3 Li is formed and Al
It becomes a base of Al alloy which has significantly higher strength than that of Al alloy. Its content is preferably 0.05 to 4.0% by weight. If the content is less than 0.05%, the effect is not exerted, and if it exceeds 4%, the reactivity becomes severe and the fibers are excessively eroded. The content is preferably 0.5 to 3.5%, particularly preferably 1 to 3%.
その結果、本発明に係る誘導発電機の回転子用ダンパ
ーウエッジは、従来のものに比して約４倍の強度が得ら
れ、更にNi線を一方向に複合化したことで、より一層高
強度化することができる。As a result, the rotor damper wedge of the induction generator according to the present invention has about four times the strength as compared with the conventional damper wedge. It can be strengthened.
以下に、本発明の実施例について、第１図〜第５図に
より説明する。An embodiment of the present invention will be described below with reference to FIGS.
本発明の複合材料の基地となるAl合金の強度を検討し
た。The strength of the Al alloy, which is the base of the composite material of the present invention, was studied.
供試材として、比較材としての純Alと、本発明の複合
材料の基地となるLiを２％含むAl合金を作製した。As test materials, pure Al as a comparative material and an Al alloy containing 2% of Li, which is the base of the composite material of the present invention, were prepared.
供試材の溶解は、黒鉛るつぼ中（φ50）に材料を入
れ、電気炉加熱によりアルゴンガス雰囲気中で行なっ
た。溶解条件は、700〜750℃で15分間保持して溶解し、
その後溶湯を黒鉛るつぼ（10t×20w×100l）に鋳造し
た。その後、軟化させるため500℃の均質化処理を施し
てから7mmまで約450℃で圧延し、さらに応力開放と完全
固溶のために500℃×１時間の溶体化処理を施し、その
後、Al−Li化合物を析出させるために200℃×10時間の
時効処理を施した。以上のような条件で作製し加工した
試料を用いて引張試験を実施した。The test material was melted by placing the material in a graphite crucible (φ50) and heating it in an electric furnace in an argon gas atmosphere. The dissolution condition is to hold at 700 to 750 ° C for 15 minutes to dissolve,
Thereafter, the molten metal was cast into a graphite crucible (10 t × 20 w × 100 l ). After that, homogenize at 500 ℃ for softening, then roll to about 7 mm at about 450 ℃, and further perform solution heat treatment at 500 ℃ × 1 hour for stress relief and complete solid solution, then Al- An aging treatment at 200 ° C. × 10 hours was performed to precipitate the Li compound. A tensile test was performed using the sample manufactured and processed under the above conditions.
第１表に引張試験結果を示す。 Table 1 shows the tensile test results.
引張り強さは、比較材が6.0kg/mm2であるのに対し
て、本発明に適用される２％Li−Alは25kg/mm2と前者の
約４倍の引張り強さを示す。以上の結果から、本発明に
適用される複合材料の基地は、強度が比較材に比べて著
しく高く、複合材料として有効であることが明らかであ
る。また、Liの他にNa,Kを適当量Alに含有させても、上
記と同様な結果が得られる。 The tensile strength of the comparative material is 6.0 kg / mm 2 , whereas the 2% Li-Al applied to the present invention has a tensile strength of 25 kg / mm 2, which is about four times that of the former. From the above results, it is clear that the matrix of the composite material applied to the present invention has significantly higher strength than the comparative material and is effective as the composite material. Further, even when Na and K are contained in an appropriate amount of Al in addition to Li, the same result as described above can be obtained.
次に、本発明の複合材料の実施例について述べる。前
記と同様の溶解方法によって２種類（純Al及び２％Li−
Al）の材料をそれぞれ溶解し、その溶湯中へ1000本束ね
た直径0.5mmのNi線を浸漬させた。その後、浸漬のまま
５分間保持してから、アルゴンガスを吹付けながら放冷
した。Next, examples of the composite material of the present invention will be described. Two kinds (pure Al and 2% Li-
Each of the Al) materials was melted, and a bundle of 1,000 Ni wires having a diameter of 0.5 mm was immersed in the molten metal. Thereafter, the immersion was maintained for 5 minutes, and then allowed to cool while blowing argon gas.
第1A図及び第1B図に、溶解、成形後の試料断面のマク
ロ組織を示す。第1B図は比較材としてAlを基地用材料と
して使用した結果である。写真から明らかなように、溶
融金属がNi線にさえぎられて内部に浸透せず、Al基地１
とNi線２との結合不良がはなはだしい複合材料10となっ
た。1A and 1B show the macrostructure of the cross section of the sample after melting and molding. FIG. 1B shows the result of using Al as a base material as a comparative material. As is clear from the picture, the molten metal was interrupted by the Ni wire and did not penetrate
The composite material 10 was remarkably poor in bonding between the wire and the Ni wire 2.
一方、第1A図は本発明の結果を示す。比較材と比較し
て明らかなごとく、基地１と繊維２、すなわちNi線との
反応性がよいためよく密着し、そのため結合不良部がな
く、良好な複合材料10が形成されていることが明らかで
ある。On the other hand, FIG. 1A shows the results of the present invention. As is apparent from comparison with the comparative material, the base 1 and the fiber 2, that is, the Ni wire have good reactivity, so that they adhere well to each other. Therefore, it is clear that a good composite material 10 is formed without any defective bonding. Is.
次に、本発明の複合材料の磁気特性について行なった
実験結果について説明する。Next, the results of experiments performed on the magnetic properties of the composite material of the present invention will be described.
供試材は前記で作製した発明材を用いた。なお、比較
材は、第1A図で示すごとく、結合不良域が著しく広いた
め、試料を採取できなかった。第２図は、試料と繊維
（Ni線）２との関係を示す。試料は、同図に示すごとく
繊維が、試料のＢ方向に垂直になるように採取した。試
料形状は20mm角である。The test material used was the inventive material prepared above. In addition, as shown in FIG. 1A, a sample could not be collected from the comparative material because the defective bonding area was extremely wide. FIG. 2 shows the relationship between the sample and the fiber (Ni wire) 2. The sample was collected so that the fiber was perpendicular to the B direction of the sample as shown in FIG. The sample shape is 20 mm square.
第３図は、試料に直流磁界を印加し、各方向の比透磁
率μと磁束密度Ｂとの関係を示す。繊維（Ni線）方向Ｂ
の透磁率μは他方向A,Cに比べて著しく大きい。以上の
ごとく、発明材は磁気異方性材に特有の特性を示すこと
が明らかである。FIG. 3 shows the relationship between the relative magnetic permeability μ and the magnetic flux density B in each direction when a DC magnetic field is applied to the sample. Fiber (Ni wire) direction B
Is significantly higher than those in the other directions A and C. As described above, it is clear that the inventive material exhibits characteristics unique to the magnetic anisotropic material.
また、本発明においては、基地の成分がAlとアルカリ
金属との合金で十分な強度が得られるが、更に強度を高
めるには、Al及びアルカリ金属の他に、Fe,Zr,Mg,Mn,C
r,V,Ti,B,Cu,Si,Ni,Mo,W,Nb等の金属元素のうち１種又
は２種以上を、それぞれ１％以上に添加したものであっ
ても効果がある。過剰に添加すると基地としてのAl合金
の比重を高め、靭性を損なう恐れがある。Further, in the present invention, the base component can obtain sufficient strength by an alloy of Al and an alkali metal, but in order to further increase the strength, in addition to Al and the alkali metal, Fe, Zr, Mg, Mn, C
Even if one or more metal elements such as r, V, Ti, B, Cu, Si, Ni, Mo, W, and Nb are added to 1% or more, respectively, the effect is obtained. Excessive addition may increase the specific gravity of the Al alloy as a matrix and may impair toughness.
また、本発明の製造方法においては、上記で述べてき
た溶湯中に束ねた繊維を浸漬する製造方法の他に、第４
図に示すように、粉末４の中に繊維２を浸漬させる方法
によっても製造可能である。すなわち、本発明の複合材
料の基地となる成分の粉末４に繊維２を浸漬させ、外部
から振動を加えて粉末４を束ねられた繊維２の内部にま
で挿入させた後、加熱して粉末４を溶解するものであ
る。この方法によれば、るつぼ５の中で粉末４はあらか
じめ束ねられた繊維２の内部にまで充填されているの
で、溶解後、溶融金属が十分に行き渡り、基地と繊維と
の結合不良に対する欠陥防止が改善される。Further, in the manufacturing method of the present invention, in addition to the manufacturing method of soaking the bundled fibers in the molten metal described above,
As shown in the figure, it can also be manufactured by a method in which the fiber 2 is immersed in the powder 4. That is, the fiber 2 is immersed in the powder 4 of the component serving as a base of the composite material of the present invention, and the vibration is applied from the outside to insert the powder 4 into the bundled fiber 2, and then heated to obtain the powder 4. Is to be dissolved. According to this method, the powder 4 is filled up to the inside of the fibers 2 bundled in advance in the crucible 5, so that the molten metal is sufficiently spread after the melting, and the defect prevention against the defective bonding between the matrix and the fibers is prevented. Is improved.
第５図は本発明に係る誘導発電機の回転子用ダンパー
ウエッジにを示す。すなわち、ウエッジ部の磁束の流線
に対応させて、強磁性体繊維2Bを配置させたものであ
る。この強磁性体繊維を回転子の通電外被にその径方向
に配置することにより、大きな磁気異方向性が得られる
ので、磁束が一方に制御されるとともに出力トルクの増
大が計れるため、電力効率が向上する。FIG. 5 shows a damper wedge for a rotor of an induction generator according to the present invention. That is, the ferromagnetic fibers 2B are arranged so as to correspond to the stream lines of the magnetic flux at the wedge portion. By arranging the ferromagnetic fiber in the radial direction of the energizing jacket of the rotor, a large magnetic anomalous direction can be obtained, so that the magnetic flux can be controlled to one side and the output torque can be increased. Is improved.
本発明によれば以下の効果を奏する。本発明に係る誘
導発電機の回転子用ダンパーウエッジは、Liを0.05〜4.
0重量％含むAl基合金中にNi線が一方向に埋設され、時
効硬化処理された複合材料からなり、前記Ni線の長手方
向が径方向に配列されているので、従来のものに比して
約４倍の強度が得られ、更にNi線を一方向に複合化した
ことで、より一層高強度化することができる。従って、
誘導発電機の高出力密度化が可能となる。According to the present invention, the following effects can be obtained. The damper wedge for the rotor of the induction generator according to the present invention has Li of 0.05 to 4.
A Ni wire is buried in one direction in an Al-based alloy containing 0% by weight and is made of an age-hardened composite material, and the longitudinal direction of the Ni wires is arranged in a radial direction. About 4 times the strength is obtained, and by further compositing Ni wires in one direction, it is possible to further increase the strength. Therefore,
It is possible to increase the power density of the induction generator.
第1A図は本発明の複合材料の横断面の金属組織を示す写
真、第1B図は比較材の複合材料の横断面の金属組織を示
す写真、第２図は本発明による繊維を一方向に配列した
複合材料を示す説明図、第３図は本発明による磁気異方
性複合材料の磁束密度と比透磁率との関係を示すグラ
フ、第４図は本発明による複合材料の製造方法の一例を
示す説明図、第５図は本発明による磁気異方性複合材料
を適用したダンパーウエッジの概略図、第６図は従来の
複合材料が適用された誘導発電機の回転子を示す説明図
である。 ２……繊維、2B……強磁性体繊維、2C……短かい繊維、
４……混合物の粉末、10……複合材料、11……ダンパー
ウエッジ。FIG. 1A is a photograph showing the metal structure of the cross section of the composite material of the present invention, FIG. 1B is a photograph showing the metal structure of the cross section of the composite material of the comparative material, and FIG. FIG. 3 is a graph showing the relationship between the magnetic flux density and the relative magnetic permeability of the magnetic anisotropic composite material according to the present invention, and FIG. 4 is an example of a method for producing the composite material according to the present invention. FIG. 5 is a schematic view of a damper wedge to which a magnetic anisotropic composite material according to the present invention is applied, and FIG. 6 is an explanatory view showing a rotor of an induction generator to which a conventional composite material is applied. is there. 2 ... fiber, 2B ... ferromagnetic fiber, 2C ... short fiber,
4 powder mixture, 10 composite material, 11 damper wedge.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 福井 寛 茨城県日立市久慈町4026番地 株式会社 日立製作所日立研究所内 (72)発明者 桧山 清志 茨城県日立市久慈町4026番地 株式会社 日立製作所日立研究所内 (72)発明者 飯島 活巳 茨城県日立市久慈町4026番地 株式会社 日立製作所日立研究所内 (72)発明者 矢内 ▲吉▼美 茨城県日立市久慈町4026番地 株式会社 日立製作所日立研究所内 (56)参考文献 特開 昭57−46656（ＪＰ，Ａ) 特開 昭61−104040（ＪＰ，Ａ) 特開 昭61−163249（ＪＰ，Ａ) 特開 昭60−187637（ＪＰ，Ａ) ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroshi Fukui 4026 Kuji-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi, Ltd.Hitachi Research Laboratory, Ltd. (72) Inventor Kiyoshi Hiyama 4026 Kuji-cho, Hitachi City, Ibaraki Prefecture Hitachi Research, Ltd. In-house (72) Inventor Akemi Iijima 4026 Kuji-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi, Ltd.Hitachi Research Laboratory, Ltd. (72) Inventor Yauchi ▲ Yoshi ▼ Mi 4026 Kuji-cho, Hitachi City, Ibaraki Prefecture, Hitachi, Ltd. 56) References JP-A-57-46656 (JP, A) JP-A-61-104040 (JP, A) JP-A-61-163249 (JP, A) JP-A-60-187637 (JP, A)
Claims (1)
線が一方的に埋設され、時効硬化処理された複合材料か
らなり、前記Ni線の長手方向が径方向に配列されている
ことを特徴とする誘導発電機の回転子用ダンパーウエッ
ジ。1. An Ni-based alloy containing 0.05 to 4.0% by weight of Li
A damper wedge for a rotor of an induction generator, wherein a wire is unilaterally embedded and is made of an age-hardened composite material, and the longitudinal direction of the Ni wire is radially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63176819A JP2668048B2 (en) | 1988-07-15 | 1988-07-15 | Damper wedge for induction generator rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63176819A JP2668048B2 (en) | 1988-07-15 | 1988-07-15 | Damper wedge for induction generator rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0225527A JPH0225527A (en) | 1990-01-29 |
| JP2668048B2 true JP2668048B2 (en) | 1997-10-27 |
Family
ID=16020399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63176819A Expired - Lifetime JP2668048B2 (en) | 1988-07-15 | 1988-07-15 | Damper wedge for induction generator rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2668048B2 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1055733A (en) * | 1974-11-11 | 1979-06-05 | Paul G. Riewald | Reinforced aluminum alloy composite |
| JPS5746656A (en) * | 1980-09-01 | 1982-03-17 | Hitachi Ltd | Induction motor |
| JPS5834148A (en) * | 1981-08-24 | 1983-02-28 | Mitsubishi Heavy Ind Ltd | Production of composite material of fiber reinforced light metal matrix |
| JPS60194039A (en) * | 1984-03-14 | 1985-10-02 | Toyota Central Res & Dev Lab Inc | Fiber-reinforced aluminum alloy composite material and its production |
| JPS61104040A (en) * | 1984-10-23 | 1986-05-22 | Kobe Steel Ltd | Manufacture of magnetic al alloy |
| JPS60187637A (en) * | 1985-01-16 | 1985-09-25 | Hitachi Chem Co Ltd | Production of graphite-containing aluminum alloy |
| JPS61239098A (en) * | 1985-04-12 | 1986-10-24 | 株式会社 興人 | Metal-inorganic fiber composite sheet and its production |
-
1988
- 1988-07-15 JP JP63176819A patent/JP2668048B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0225527A (en) | 1990-01-29 |
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