JPH01228662A - Manufacture of fiber compound member - Google Patents
Manufacture of fiber compound memberInfo
- Publication number
- JPH01228662A JPH01228662A JP5246788A JP5246788A JPH01228662A JP H01228662 A JPH01228662 A JP H01228662A JP 5246788 A JP5246788 A JP 5246788A JP 5246788 A JP5246788 A JP 5246788A JP H01228662 A JPH01228662 A JP H01228662A
- Authority
- JP
- Japan
- Prior art keywords
- thick
- molded body
- fiber molded
- fiber
- wall portion
- 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.)
- Granted
Links
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、繊維複合部材の製造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 manufacturing a fiber composite member.
（従来の技術）
従来、複合材料の製造方法の一つとして、アルミナその
他高弾性を有する繊維を強化材として繊維成形体を形成
し、該繊維成形体にアルミニウムその他軽合金の溶融マ
トリックス金属を導入して高圧鋳造を行なう方法がある
（例えば、特公昭６２−３８４１２号公報参照）。(Prior art) Conventionally, one method for manufacturing composite materials is to form a fiber molded body using alumina or other highly elastic fibers as a reinforcing material, and introduce a molten matrix metal such as aluminum or other light alloy into the fiber molded body. There is a method of performing high-pressure casting (see, for example, Japanese Patent Publication No. 38412/1983).
（発明が解決しようとする課題）
しかし、上記従来の製造方法のように繊維成形体に高圧
鋳造法による軽合金を導入して複合化する場合、第６図
に示すように、繊維成形体ａを配置した鋳型すの複合部
位が厚肉部Ｃであり、かつ溶湯の供給が薄肉部ｄを通し
て行われるような時には、厚肉部Ｃの凝固が完了する前
に薄肉部ｄが凝固してしまうので、厚肉部Ｃの熱引けが
悪くなり接合部周辺に鋳巣ｅが発生しやすいという課題
があった。(Problems to be Solved by the Invention) However, when a light alloy is introduced into a fiber molded body by high-pressure casting as in the above-mentioned conventional manufacturing method to form a composite, as shown in FIG. When the composite part of the mold in which the mold is placed is the thick wall part C, and the molten metal is supplied through the thin wall part d, the thin wall part d will solidify before the solidification of the thick wall part C is completed. Therefore, there was a problem in that the heat shrinkage of the thick portion C was poor and blowholes e were likely to occur around the joint.
（課題を解決するための手段）
本発明の上記課題を解決するための手段は、薄肉部を介
して厚肉部に溶湯を加圧充填するとともに、厚肉部に繊
維成形体を配置して核部を繊維強化金属として複合化す
るものにおいて、繊維成形体の見かけ上の体積が厚肉部
の体積の７５％以上になるように設定し、複合化するよ
うにした繊維複合部材の製造方法である。(Means for Solving the Problems) Means for solving the above problems of the present invention include filling the molten metal under pressure into the thick wall portion through the thin wall portion, and arranging a fiber molded body in the thick wall portion. A method for manufacturing a fiber composite member in which the core part is composited as a fiber-reinforced metal, in which the apparent volume of the fiber molded body is set to be 75% or more of the volume of the thick part. It is.
（作用）
繊維成形体は強化材である短繊維を低密度で成形した成
形体なので、高圧鋳造を行なうと、薄肉部から供給され
る溶湯は、厚肉部に配置した繊維成形体の内部に侵入し
てくる。しかし、この繊維成形体の見かけ上の体積が厚
肉部の７５％以上になるように設定すると、繊維成形体
周辺の厚肉部の体積が減少するので、核部の冷却効率が
向上し、薄肉部の早期の凝固による厚肉部の熱どもりが
防止される。(Function) Since the fiber molded body is a molded body made of short fibers as a reinforcing material at a low density, when high-pressure casting is performed, the molten metal supplied from the thin-walled part flows into the inside of the fiber molded body placed in the thick-walled part. Invading. However, if the apparent volume of the fiber molded body is set to be 75% or more of the thick wall portion, the volume of the thick wall portion around the fiber molded body will be reduced, and the cooling efficiency of the core portion will be improved. Heat stagnation in thick-walled portions due to early solidification of thin-walled portions is prevented.
（実施例） 以下１図面に基いて本発明の詳細な説明する。(Example) The present invention will be described in detail below based on one drawing.
第１図ないし第４図に示すように、本発明はロータリー
エンジン（図示省略）のローター１のように、余分な部
分の肉を薄くした薄肉ｔ３１１１ａと、繊維成形体２を
配置して強化した厚肉部１ｂとを備えた繊維複合部材を
鋳造する場合の製造工程において、上記薄肉部１ａを介
して繊維成形体２を配置した厚肉部１ｂに溶湯を加圧充
填する際に、厚肉部］ｂの体積にしめる繊維成形体２の
見かけ上の体積が厚肉部１ｂの体積の７５％以上になる
ように設定することを特徴としている。As shown in FIGS. 1 to 4, the present invention is similar to the rotor 1 of a rotary engine (not shown), and is reinforced by arranging a thin wall t3111a in which the excess portion is thinned and a fiber molded body 2. In the manufacturing process for casting a fiber composite member having a thick wall portion 1b, when pressurizing and filling molten metal into the thick wall portion 1b in which the fiber molded body 2 is disposed via the thin wall portion 1a, the thick wall portion 1b is It is characterized in that the apparent volume of the fiber molded body 2 is set to be equal to or more than 75% of the volume of the thick portion 1b.
ｔｍ維成形体２は、高弾性を有するアルミナ短繊維がバ
インダーによって希望の繊維密度に成形されたもので、
アルミナ短繊維の体積率が約１０％となるように多数の
すき間を有した低密度（約０゜３３ｇ／ｃｃ）の状態で
成形され、このすき間に溶融マトリックス材料が侵入し
て凝固することによって繊維複合部材の複合部１ｃが製
造される。本実施例において繊維成形体２は外周部にピ
ンボス２ａを備えており、該ピンボス２ａがローター１
の厚肉部１ｂに配置される。そして、リングギヤ３をス
プリングピン４で固定するためのローター１の母材補強
として用いられる。The tm fiber molded body 2 is made by molding alumina short fibers with high elasticity to a desired fiber density with a binder,
It is molded in a low density state (approximately 0°33 g/cc) with many gaps so that the volume percentage of alumina short fibers is approximately 10%, and the molten matrix material enters into these gaps and solidifies. A composite portion 1c of the fiber composite member is manufactured. In this embodiment, the fiber molded body 2 is provided with a pin boss 2a on the outer periphery, and the pin boss 2a is attached to the rotor 1.
It is arranged in the thick part 1b of. Then, it is used as a base material reinforcement for the rotor 1 for fixing the ring gear 3 with the spring pin 4.
溶融マトリックス材料は軽量化のために、アルミニウム
合金（Ｃｕ：１．０ｗｔ％、Ｓｉ：１１．０ｗｔ％、Ｍ
ｇ：１．１ｗｔ％、Ｚｎ：０．０５ｗｔ％。The molten matrix material is made of aluminum alloy (Cu: 1.0 wt%, Si: 11.0 wt%, M
g: 1.1 wt%, Zn: 0.05 wt%.
Ｆｅ：０．３ｗｔ％、Ｍｎ：０．５ｗｔ％、Ｎｉ：ｌ。Fe: 0.3 wt%, Mn: 0.5 wt%, Ni: l.
５ｗｔ％、Ａ１：８５．０ｗｔ％）を溶湯温度７５０℃
で溶融させたものを用いる。また、繊維成形体も溶湯が
侵入しやすいように鋳型と共に５００°Ｃぐらいに予熱
しておく。そして、上記繊維成形体２を鋳型にセットし
て、溶湯を約４００ｋｇ／ｃｍ”の圧力で加圧充填する
。この場合、ローター１は軽量化のために肉を薄くした
薄肉部１ａと強化のために上記繊維成形体２を配置した
厚肉部１ｂとを備えているので、鋳型の形状が複雑であ
る。そのため、溶融マトリックス材料を注入すると、溶
湯は第１図ないし第３図に矢印で示すように薄肉部１ａ
の各方向から繊維成形体２を配置した厚肉部１ｂへ供給
される。この際、薄肉部１ａは該薄肉部１ａの鋳型の容
量が小さい割に鋳型と接する表面積が大きいため冷却効
率が良く早期に凝固しやすい。また、これとは逆に、厚
肉部１ｂは該厚肉部１ｂの鋳型の容量が大きい割に鋳型
と接する面積が小さく冷却効率が悪いが、繊維成形体２
を配置することによって該繊維成形体２の周囲部の厚肉
部１ｂに供給される溶湯の容量が減少される。すなわち
、厚肉部１ｂにしめる繊維成形体２の見かけ上の体積を
厚肉部１ｂの体積の７５％以上になるように設定するこ
とによって、厚肉部１ｂの溶湯の冷却効率が良くなり厚
肉部１ｂの凝固を早くすることができる。そのため、薄
肉部１ａの早期の凝固による厚肉部１ｂの熱どもりが防
止され、熱どもりによる鋳巣の発生を防止できる。5wt%, A1:85.0wt%) at a molten metal temperature of 750℃
Use the melted one. In addition, the fiber molded body is preheated to about 500°C together with the mold so that the molten metal can easily penetrate therein. Then, the fiber molded body 2 is set in a mold, and the molten metal is pressurized and filled at a pressure of about 400 kg/cm. The shape of the mold is complicated because it has a thick wall part 1b in which the fiber molded body 2 is arranged.Therefore, when the molten matrix material is injected, the molten metal flows as shown by the arrows in Figures 1 to 3. As shown, the thin part 1a
It is supplied from each direction to the thick wall portion 1b in which the fiber molded body 2 is arranged. At this time, the thin-walled portion 1a has a large surface area in contact with the mold even though the capacity of the mold of the thin-walled portion 1a is small, so cooling efficiency is good and solidification is easy to occur at an early stage. On the other hand, although the thick walled portion 1b has a large mold capacity, the area in contact with the mold is small and the cooling efficiency is low.
By arranging this, the volume of molten metal supplied to the thick wall portion 1b around the fiber molded body 2 is reduced. That is, by setting the apparent volume of the fiber molded body 2 to be inserted into the thick wall portion 1b to be 75% or more of the volume of the thick wall portion 1b, the cooling efficiency of the molten metal in the thick wall portion 1b is improved, and the thick wall The solidification of the portion 1b can be accelerated. Therefore, heat stagnation in the thick wall portion 1b due to early solidification of the thin wall portion 1a is prevented, and generation of blowholes due to heat stagnancy can be prevented.
なお、厚肉部１ｂの熱どもりを防止する方法としては、
厚肉部１ｂに溶湯を供給する薄肉部１ａの肉厚を大きく
するという方法が考えられるが、この場合、ローター１
の軽量化には不利になってしまう。また、ロータ−１全
体の熱引けが悪くなってしまい、熱どもりによる鋳巣の
発生は防止されなかった。In addition, as a method for preventing heat stagnation in the thick portion 1b,
One possible method is to increase the thickness of the thin wall portion 1a that supplies molten metal to the thick wall portion 1b, but in this case, the rotor 1
This would be disadvantageous for weight reduction. In addition, the heat shrinkage of the entire rotor 1 deteriorated, and the occurrence of blowholes due to heat stagnancy could not be prevented.
く実験例〉
厚肉部１ｂの体積にしめる繊維成形体２の見かけ上の体
積の割合を７５％以上とすることによって、厚肉部１ｂ
の熱ごちりによる鋳巣の発生が防止されるかどうかを確
認するために、上記実施例に準じてローター１を製造し
、該ローター１を第３図に示す同一断面（第１図におけ
る■−■線断面）で切断して、厚肉部１ｂの断面積にし
める鋳巣の面積を求めた。この実験を厚肉部１ｂの体積
にしめる繊維成形体２の見かけ上の体積の割合を２０〜
８０％の範囲で変化させて行ない、第５図にグラフで示
すような結果が得られた。Experimental Example> By setting the ratio of the apparent volume of the fiber molded body 2 to the volume of the thick-walled portion 1b to be 75% or more, the thick-walled portion 1b
In order to confirm whether or not the generation of blowholes due to hot dust can be prevented, a rotor 1 was manufactured according to the above embodiment, and the rotor 1 had the same cross section as shown in FIG. The area of the cavity was determined by cutting along the cross-sectional area of the thick wall portion 1b. In this experiment, the ratio of the apparent volume of the fiber molded body 2 to the volume of the thick-walled part 1b was set to 20~
The experiment was carried out by changing the temperature within a range of 80%, and the results shown in the graph in FIG. 5 were obtained.
この結果から、厚肉部１ｂの体積にしめる繊維成形体２
の見かけ」二の体積の割合を７５％以上とすることによ
って、厚肉部１ｂの断面に実質的な鋳巣の発生がないこ
とが確認された。From this result, it can be seen that the fiber molded body 2 that can be packed into the volume of the thick part 1b
It was confirmed that by setting the ratio of the apparent volume of 2 to 75% or more, there was no substantial formation of blowholes in the cross section of the thick portion 1b.
（発明の効果）
繊維成形体周辺の厚肉部の冷却効率が向上し、核部の溶
湯の凝固が早められるので、薄肉部の早期の凝固による
厚肉部の熱どもりが防止され、熱ごちりによる鋳巣の発
生を防止できる。(Effect of the invention) The cooling efficiency of the thick-walled part around the fiber molded article is improved, and the solidification of the molten metal in the core part is accelerated, thereby preventing heat stagnation in the thick-walled part due to early solidification of the thin-walled part. It is possible to prevent the formation of blowholes due to dust.
第１図ないし第５図は本発明の図面を示し、第１図は本
発明によって製造可能なロータリーエンジンのローター
を示す部分断面図、第２図は第１図の■−■線断面図、
第３図は第１図のｌｌｌ−’ＩＩＩ線断面図、第４図は
繊維成形体の斜視図、第５図は実験例に係る厚肉部の体
積にしめる繊維成形体の見かけ上の体積と厚肉部の断面
積にしめる鋳巣の断面積との関係を示すグラフ、第６図
は従来の製造方法による課題を示す概略図である。
１・・−・・ローグー、１ａ・ ・・薄肉部、１ｂ・・
・厚肉部、２・・・・繊維成形体。1 to 5 show drawings of the present invention, FIG. 1 is a partial sectional view showing a rotor of a rotary engine that can be manufactured by the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1,
Fig. 3 is a sectional view taken along the line Ill-'III in Fig. 1, Fig. 4 is a perspective view of the fiber molded body, and Fig. 5 is the apparent volume of the fiber molded body subtracted into the volume of the thick part according to the experimental example. FIG. 6 is a graph showing the relationship between the cross-sectional area of the thick part and the cross-sectional area of the blow hole, and is a schematic diagram showing the problems caused by the conventional manufacturing method. 1...Rogue, 1a...Thin wall part, 1b...
- Thick wall part, 2...Fiber molded body.
Claims (1)
もに、厚肉部に繊維成形体を配置して該部を繊維強化金
属として複合化するものにおいて、繊維成形体の見かけ
上の体積が厚肉部の体積の７５％以上になるように設定
し、複合化するようにした繊維複合部材の製造方法。(1) In a method in which molten metal is pressurized and filled into a thick-walled part through a thin-walled part, a fiber molded body is placed in the thick-walled part, and the part is composited as a fiber-reinforced metal, the appearance of the fiber molded body is A method for manufacturing a fiber composite member, in which the volume of the thick part is set to be 75% or more of the volume of the thick part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5246788A JP2653817B2 (en) | 1988-03-04 | 1988-03-04 | Method for producing fiber composite member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5246788A JP2653817B2 (en) | 1988-03-04 | 1988-03-04 | Method for producing fiber composite member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01228662A true JPH01228662A (en) | 1989-09-12 |
| JP2653817B2 JP2653817B2 (en) | 1997-09-17 |
Family
ID=12915523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5246788A Expired - Fee Related JP2653817B2 (en) | 1988-03-04 | 1988-03-04 | Method for producing fiber composite member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2653817B2 (en) |
-
1988
- 1988-03-04 JP JP5246788A patent/JP2653817B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2653817B2 (en) | 1997-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |