JPS634032A - Preform for producing fiber-reinforced metal and its production - Google Patents
Preform for producing fiber-reinforced metal and its productionInfo
- Publication number
- JPS634032A JPS634032A JP14652486A JP14652486A JPS634032A JP S634032 A JPS634032 A JP S634032A JP 14652486 A JP14652486 A JP 14652486A JP 14652486 A JP14652486 A JP 14652486A JP S634032 A JPS634032 A JP S634032A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- container
- metal
- preform
- molded body
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 117
- 239000002184 metal Substances 0.000 title claims abstract description 117
- 238000004519 manufacturing process Methods 0.000 title claims description 40
- 239000000835 fiber Substances 0.000 claims abstract description 120
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 239000006185 dispersion Substances 0.000 claims abstract description 25
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 32
- 150000002739 metals Chemical class 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910003465 moissanite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 29
- 239000011159 matrix material Substances 0.000 description 26
- 238000004891 communication Methods 0.000 description 7
- 230000035515 penetration Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229940072056 alginate Drugs 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は繊維成形体からなる繊維強化金属製造用プリ
フォーム、特に高圧鋳造法などによる繊維強化金属の製
造における中間素材として利用されるプリフォームおよ
びその製造方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a preform for manufacturing fiber-reinforced metal made of a fiber molded body, particularly a preform used as an intermediate material in the manufacture of fiber-reinforced metal by high-pressure casting. and its manufacturing method.
従来、繊維強化金属を製造するための中間素材として繊
維成形体が用いられることがあり、これをウィスカーな
どの短繊維より製造する方法には、抄紙法などが知られ
ている。第４図は例えば特開昭６１−３８５５号に示さ
れた従来の繊維成形体の製造方法を示す断面図であり、
図において、（１）は成形容器で、下部にフィルター（
２）および連通孔（３）を介して減圧室（４）が連通し
ている。減圧室（４）には吸引口（５）が設けられ、減
圧するための真空ポンプ（図示せず）などに接続してい
る。（６）は強撹拌によりウィスカーなどの短繊維を十
分にほぐして分散させた繊維分散液体、（７）は繊維分
散液体（６）をいれた容器である。成形容器（１）のキ
ャビティは一般に所望の繊維成形体と同一の形状とされ
ている。BACKGROUND ART Conventionally, a fiber molded body has been used as an intermediate material for manufacturing fiber reinforced metal, and a paper making method is known as a method for manufacturing this from short fibers such as whiskers. FIG. 4 is a cross-sectional view showing a conventional method for manufacturing a fiber molded body, as disclosed in, for example, Japanese Patent Application Laid-Open No. 61-3855.
In the figure, (1) is a molded container with a filter (
2) and a decompression chamber (4) are in communication via the communication hole (3). The decompression chamber (4) is provided with a suction port (5) and is connected to a vacuum pump (not shown) or the like for depressurizing the chamber. (6) is a fiber dispersion liquid in which short fibers such as whiskers are sufficiently loosened and dispersed by strong stirring, and (7) is a container containing the fiber dispersion liquid (6). The cavity of the molded container (1) generally has the same shape as the desired fiber molded product.
上記の構成において、まずウィスカーなどの短繊維を容
器（７）において水、アルコール、アセトンなどの液体
に分散させる。このとき毛玉を作らないように、ミキサ
ーなどにより強くかくはんすることが従来行われている
。また繊維成形体の強度を高めたり、繊維の体積分率を
調整する手段としてバインダーを混入する場合もある。In the above configuration, short fibers such as whiskers are first dispersed in a liquid such as water, alcohol, or acetone in a container (7). At this time, in order to prevent the formation of fluff, it is conventional practice to strongly agitate with a mixer or the like. Furthermore, a binder may be mixed in as a means to increase the strength of the fiber molded product or to adjust the volume fraction of fibers.
そして繊維分散液体（６）を容器（７）より成形容器（
１）のキャビティに注入し、この状態で吸引口（５）か
らポンプにより吸引して減圧室（４）を減圧し、繊維分
散液体（６）をフィルター（２）および連通孔（３）を
介して吸引する。フィルター（２）は繊維を全くまたは
殆ど通さず、液体のみを通すフィルターであるため、液
体のみが減圧室（４）へ流下し、繊維はフィルター（２
）の表面に集積して繊維成形体が形成される。繊維成形
体はこの後成形容器（１）より取出され、繊維強化金属
製造用プリフォームとして供される。Then, the fiber dispersion liquid (6) is transferred from the container (7) to the molded container (
1), and in this state, the vacuum chamber (4) is depressurized by suction from the suction port (5) with a pump, and the fiber dispersion liquid (6) is passed through the filter (2) and the communication hole (3). and aspirate. Since the filter (2) is a filter that allows only the liquid to pass through without any or almost no fibers passing through, only the liquid flows down into the vacuum chamber (4), and the fibers pass through the filter (2).
) to form a fiber molded body. The fiber molded body is then taken out from the molding container (1) and used as a preform for manufacturing fiber-reinforced metals.
このような繊維成形体を用いて繊維強化金属を製造する
方法としては、高圧鋳造法などが知られている。この方
法は鋳造型内に繊維成形体を充填した後、上記鋳造型に
溶融マトリックス金属を注入し、直ちに溶融マトリック
ス金属をプランジャーなどにより加圧して、繊維成形体
の繊維間間隙へ溶融マトリックス金属を浸透させ、その
後マトリックス金属を冷却凝固させることによって繊維
強化金属を製造する方法である。さらに高圧鋳造法など
の改良法として、繊維成形体を容器に入れて容器と一体
のまま高圧鋳造法などの鋳造型にいれて鋳造する方法が
提案されている（例えば特開昭６０−２１０３５１号）
。A high-pressure casting method and the like are known as methods for manufacturing fiber-reinforced metal using such fiber molded bodies. In this method, after filling a fiber molded body into a casting mold, molten matrix metal is injected into the casting mold, and the molten matrix metal is immediately pressurized with a plunger, etc., and the molten matrix metal is poured into the gaps between the fibers of the fiber molded body. This method produces fiber-reinforced metal by infiltrating the matrix metal and then cooling and solidifying the matrix metal. Furthermore, as an improvement method of the high-pressure casting method, a method has been proposed in which a fiber molded body is placed in a container, and the molded body is put into a casting mold such as a high-pressure casting method while being integrated with the container. )
.
従来の繊維成形体を用いて高圧鋳造法などにより繊維強
化金属を製造する場合には、繊維成形体を高圧鋳造法な
どの型に直接入れる場合に生じる問題点として、以下の
問題点があった。When manufacturing fiber-reinforced metals using conventional fiber moldings using high-pressure casting methods, the following problems occur when the fiber moldings are placed directly into molds using high-pressure casting methods: .
（１）繊維成形体の強度があまり大きくない場合には高
圧鋳造時に受ける力などにより繊維成形体が変形または
破壊を生じ、健全な繊維強化金属が得られないことがし
ばしば生じる。(1) If the strength of the fiber molded body is not very high, the fiber molded body may be deformed or destroyed by the force received during high pressure casting, and a sound fiber reinforced metal often cannot be obtained.
（２）繊維成形体は一般にマトリックス金属の融点近く
または以上の温度に予備加熱された後鋳造型内に設置さ
れ、繊維成形体への溶融マトリックスの浸透を容易とす
ることが行われる。しかし繊維成形体と型とのクリアラ
ンスが小さい場合には、型に接した箇所の繊維成形体が
型によって急速に冷却される場合が生じ、その部分に溶
融マトリックス金属の浸透不良が生じることがある。(2) The fibrous molded body is generally preheated to a temperature close to or above the melting point of the matrix metal and then placed in a casting mold to facilitate penetration of the molten matrix into the fibrous molded body. However, if the clearance between the fiber compact and the mold is small, the fiber compact in the area in contact with the mold may be rapidly cooled by the mold, which may result in poor penetration of the molten matrix metal into that area. .
（３）繊維成形体と型とのクリアランスが大きい場合に
は、溶融マトリックス金属が繊維成形体内部に浸透する
前に繊維成形体の全周を包み、繊維成形体内のガスが流
出できず、残留して鋳造欠陥の原因と成り易い。(3) When the clearance between the fiber molded body and the mold is large, the molten matrix metal wraps around the entire periphery of the fiber molded body before penetrating into the fiber molded body, preventing gas from flowing out and remaining This can easily cause casting defects.
以上の問題点を解決するための改良法、すなわち繊維成
形体を容器に入れ、容器とともに高圧鋳造などにより鋳
造する方法は、単に容器に入れただけであるため、以下
の問題点があった。The improved method for solving the above problems, that is, the method of placing the fiber molded body in a container and casting it together with the container by high-pressure casting, etc., has the following problems because it is simply placed in the container.
（１）ガスの流出口がないため、容器底部においてマト
リックス金属の浸透不良が生じ易い。(1) Since there is no gas outlet, poor penetration of the matrix metal is likely to occur at the bottom of the container.
（２）容器に繊維成形体を詰める工程が新たに増す。(2) A new step is added to fill containers with fiber molded bodies.
発明者らは上記のような従来の問題点を解消すめために
、開口部と流出口を持つ容器を提案したが（未公開）、
この発明はこれをさらに改良したもので、特にウィスカ
ーなどの短繊維から繊維成形体を成形するにあたり、高
圧鋳造法などにおける繊維成形体の変形ないし破壊を防
止し、かつ溶融マトリックス金属の浸透を確実にして、
浸透不良や鋳造欠陥のない健全な繊維強化金属を低コス
トで安定して製造できる繊維強化金属製造用プリフォー
ムおよびその製造方法を得ることを目的とする。In order to solve the conventional problems mentioned above, the inventors proposed a container with an opening and an outlet (unpublished).
This invention is a further improvement on this, and in particular, when molding fiber moldings from short fibers such as whiskers, it prevents deformation or destruction of the fiber moldings during high-pressure casting methods, and ensures penetration of molten matrix metal. and
The object of the present invention is to obtain a preform for manufacturing fiber-reinforced metal that can stably manufacture sound fiber-reinforced metal without poor penetration or casting defects at low cost, and a method for manufacturing the same.
この発明に係わる繊維強化金属製造用プリフォームは、
金属容器と繊維成形体とからなり、前記金属容器は繊維
成形体の外形に対応する形状のキャビティおよび開口部
を有するとともに、底部または側面に１個以上の貫通孔
を有し、前記繊維成形体は短繊維が金属容器のキャビテ
ィに直接成形一体化されたものである。The preform for manufacturing fiber-reinforced metal according to this invention is
It consists of a metal container and a fiber molded body, the metal container has a cavity and an opening shaped to correspond to the outer shape of the fiber molded body, and has one or more through holes in the bottom or side surface, is a product in which short fibers are directly molded and integrated into the cavity of a metal container.
この発明に係わる繊維強化金属製造用プリフォームの製
造方法は、成形容器のキャビティに金属容器をいれる工
程と、前記金属容器に繊維分散液体を注入する工程と、
前記繊維分散液体をフィルターを通してキャビティの外
から吸引する工程とを含むものである。A method for manufacturing a preform for manufacturing fiber-reinforced metal according to the present invention includes a step of placing a metal container in a cavity of a molded container, a step of injecting a fiber dispersion liquid into the metal container,
The method includes a step of suctioning the fiber dispersion liquid from outside the cavity through a filter.
この発明においては、金属容器を従来のものと同様の繊
維成形体製造装置の中に設置後、繊維分散液体を金属容
器内に注入し、ポンプなどにより減圧室を減圧してフィ
ルターを通して吸引すると、繊維はフィルター面上に蓄
積し、金属容器を埋めて繊維成形体が金属容器と一体に
成形され、繊維強化金属製造用プリフォームが得られる
。In this invention, after a metal container is installed in a fiber molded product manufacturing apparatus similar to conventional ones, a fiber dispersion liquid is injected into the metal container, the pressure is reduced in a vacuum chamber with a pump, etc., and the vacuum is sucked through a filter. The fibers accumulate on the filter surface and fill the metal container, and a fiber molded body is integrally molded with the metal container to obtain a preform for manufacturing fiber-reinforced metals.
こうして製造された繊維強化金属製造用プリフォームは
、予備加熱後、型内に設置して溶融マトリックス金属を
注入し、高圧鋳造法などにより、繊維強化金属を製造す
る。この場合、繊維成形体は金属容器と一体に直接成形
され、高圧鋳造法などの際ともに型内に設置されるので
、金属容器の耐力によって繊維成形体の変形ないし破壊
が防止されるとともに、予備加熱後の繊維成形体のハン
ドリングが容易となる。−方間口部およびそれとは別に
１個以上の貫通孔を設けることにより、溶融マトリック
ス金属は開口部より流入するとともに、繊維成形体内の
ガスは貫通孔から流出するので、溶融マトリックス金属
の浸透不良が抑制される。また金属容器は繊維成形体の
温度保持にも効果を有し、溶融マトリックス金属の浸透
不良が抑制される。The thus manufactured preform for manufacturing fiber-reinforced metal is preheated, placed in a mold, molten matrix metal is injected, and fiber-reinforced metal is manufactured by high-pressure casting or the like. In this case, the fiber molded body is directly molded with the metal container and placed in the mold during high-pressure casting, so the yield strength of the metal container prevents the fiber molded body from deforming or breaking. Handling of the heated fiber molded body becomes easy. - By providing a side opening and one or more through holes separately, the molten matrix metal flows in through the opening, and the gas inside the fiber molded body flows out through the through hole, thereby preventing poor penetration of the molten matrix metal. suppressed. Furthermore, the metal container has an effect on maintaining the temperature of the fiber molded body, thereby suppressing poor penetration of the molten matrix metal.
また金属容器に開口部と底部または側面に１個以上の貫
通孔とを設けることにより、繊維成形体を抄紙法により
金属容器のキャビティへ直接成形することが可能になる
。そして繊維成形体が金属容器へ直接成形一体化される
ことにより、繊維成形体を容器に詰める工数が低減され
る。Further, by providing the metal container with an opening and one or more through holes in the bottom or side surface, it becomes possible to directly mold the fiber molded body into the cavity of the metal container by a papermaking method. Since the fiber molded body is directly molded and integrated into the metal container, the number of man-hours required to pack the fiber molded body into the container is reduced.
第１図はこの発明の一実施例を示す断面図であり、図に
おいて、第４図と同一符号は同一または相当部分を示す
。成形容器（１）はフィルター（２）および連通孔（３
）を通じて減圧室（４）と連通している。FIG. 1 is a sectional view showing an embodiment of the present invention, and in the figure, the same reference numerals as in FIG. 4 indicate the same or corresponding parts. The molded container (1) has a filter (2) and a communication hole (3).
) communicates with the decompression chamber (4).
減圧室（４）には吸引口（５）があり、吸引するポンプ
（図示せず）などと接続している。ポンプは真空ポンプ
など通常吸引に用いられる装置であればよい。The decompression chamber (4) has a suction port (5) and is connected to a suction pump (not shown) or the like. The pump may be any device normally used for suction, such as a vacuum pump.
（８）は金属容器で、実施例では上方が開口部となって
いて、底部および／または側面に１個以上の貫通孔（９
）を有する。金属容器（８）はマトリックス金属と同じ
または同系統の金属、あるいはマトリックス金属より融
点の高い金属で、マトリックス金属と反応を生じにくい
金属でつくることが好ましい。成形容器（１）のキャピ
テイは金属容器（８）の外形と等しく形成されている。(8) is a metal container, which in the embodiment has an opening at the top and one or more through holes (9) at the bottom and/or side.
). The metal container (8) is preferably made of a metal that is the same as or of the same type as the matrix metal, or a metal that has a higher melting point than the matrix metal and is less likely to react with the matrix metal. The cavity of the molded container (1) is formed to have the same external shape as the metal container (8).
フィルター（２）は繊維を全くまたは殆ど通さず、−方
液体を容易に通過させるものであり、ろ紙、メツシュ、
不織布などを用いることができ、繊維および抄紙速度に
応じて目の粗さを変えることができる。繊維分散液体（
６）の繊維は液体に分散させ得る長ざの短繊維で、ウィ
スカーあるいは連続繊維をチョップした短繊維、切削そ
の他の製法によって得られた繊維などを用いることがで
きる。−般に径が０．１〜５０μｍ程度であり、アスペ
クト比が５〜１００００程度のものが好ましい、Ｍ！！
維としては炭素、シリコンカーバイド、シリコンナイト
ライド、アルミナ、チタン酸カリウム、金属などからな
るものを用いることができ、１種単独または２種以上の
繊維を混合して用いることができる。The filter (2) is one that does not allow any or very few fibers to pass through, but allows liquids to pass through easily, and is made of filter paper, mesh,
A nonwoven fabric or the like can be used, and the coarseness can be changed depending on the fiber and paper making speed. Fiber dispersion liquid (
The fibers 6) are long short fibers that can be dispersed in a liquid, and can be short fibers obtained by chopping whiskers or continuous fibers, fibers obtained by cutting or other manufacturing methods, and the like. - In general, it is preferable that the diameter is about 0.1 to 50 μm and the aspect ratio is about 5 to 10,000. !
The fibers can be made of carbon, silicon carbide, silicon nitride, alumina, potassium titanate, metal, etc., and can be used singly or in combination of two or more types.
上記の構成において、繊維はまえもって液体中に分散さ
せて繊維分散液体（６）とする。分散に用いる液体は繊
維を分散できるものであればよく、−般に水あるいはア
ルコール、アセトンなどの有機溶剤が用いられる。分散
をよくするために界面活性剤を少量添加してもよく、ま
た繊維の体積分率を制御するために無機または有機のバ
インダーを混合してもよい。バインダーとしてはエポキ
シ樹脂、ポリビニールアルコール、セルローズ、フェノ
ール樹脂、アルギン酸塩、水ガラス、リン酸塩などを用
いることができる。繊維分散液体はミキサー、高速かく
はん機、ホモジナイザーなどであらかじめ強かくはんし
て毛玉などを十分にほぐし、単繊維の状態にしておくと
よい。In the above configuration, the fibers are dispersed in a liquid in advance to form a fiber-dispersed liquid (6). The liquid used for dispersion may be any liquid that can disperse the fibers, and generally water or an organic solvent such as alcohol or acetone is used. A small amount of surfactant may be added to improve dispersion, and an inorganic or organic binder may be mixed in to control the fiber volume fraction. As the binder, epoxy resin, polyvinyl alcohol, cellulose, phenol resin, alginate, water glass, phosphate, etc. can be used. It is recommended that the fiber dispersion liquid be strongly agitated in advance using a mixer, high-speed stirrer, homogenizer, etc. to sufficiently loosen pilling and the like to form a single fiber.
第１図の実施例では、金属容器（８）は成形容器（１）
のキャビティのフィルター（２）の上に設置される。金
属容器（８）とに形容器（１）のすき間は金属容器（８
）の設置および取出しに差支えがない範囲で、液体の吸
引を妨げないクリアランスがあることが望ましいが、上
記範囲内では一般にクリアランスは小さい方が繊維の無
駄を少なくすることができる。In the embodiment of FIG. 1, the metal container (8) is a molded container (1).
is installed on top of the filter (2) in the cavity. The gap between the metal container (8) and the wedge-shaped container (1) is
), it is desirable to have a clearance that does not impede the suction of the liquid within a range that does not pose a problem in installing and taking out the fibers, but within the above range, the smaller the clearance, the less waste of fibers can be reduced.
繊維強化金属製造用プリフォームの製造方法は、まず成
形容器（１）の上方より金属容器（８）内に繊維分散液
体（６）を注入し、同時にポンプなどを働かせ、吸引口
（５）より減圧室（４）を減圧すると、繊維分散液体（
６）は金属容器（８）の貫通孔（９）、フィルター（２
）および成形容器（１）の連通孔（３）を通して吸引さ
れる。フィルター（２）は繊維を全くまたは殆ど通さな
いため、液体（１１）のみが吸引されて減圧室（４）に
流下し、繊維はフィルター（２）の上部に金属容器（８
）のキャビティを埋めながら堆積して、繊維成形体（１
０）が形成される。形成された繊維成形体（１０）は加
圧してさらに密度を高めてもよい。The method for producing a preform for manufacturing fiber-reinforced metals is to first inject the fiber dispersion liquid (6) into the metal container (8) from above the molding container (1), and at the same time operate a pump or the like to pour the fiber dispersion liquid (6) through the suction port (5). When the pressure in the vacuum chamber (4) is reduced, the fiber dispersion liquid (
6) is the through hole (9) of the metal container (8) and the filter (2).
) and the communication hole (3) of the molded container (1). Since the filter (2) does not allow any or very few fibers to pass through, only the liquid (11) is sucked and flows down into the vacuum chamber (4), and the fibers are stored in a metal container (8) on the top of the filter (2).
) is deposited while filling the cavity of the fiber molded body (1
0) is formed. The formed fiber molded body (10) may be pressed to further increase its density.
上記のように金属容器（８）と−体に直接繊維成形体（
１０）を形成した後、金属容器（８）を成形容器（１）
から取出し、繊維強化金属製造用プリフォームとして高
圧鋳造法などの中間素材に供される。As mentioned above, the fiber molded body (
After forming the metal container (8) into the molded container (1)
It is taken out from the factory and used as an intermediate material for high-pressure casting and other processes as a preform for manufacturing fiber-reinforced metals.
第２図は上記により製造された繊維強化金属製造用プリ
フォームの断面図であり、プリフォームは金属容器（８
）およびそれと−体になった繊維成形体（１０）からな
る。FIG. 2 is a cross-sectional view of the preform for manufacturing fiber-reinforced metal manufactured as described above, and the preform is a metal container (8
) and a fiber molded body (10) formed therewith.
高圧鋳造法としては、通常行われている溶湯鍛造法、ダ
イキャスト、真空含浸などの方法が用いられる。これら
の方法では、成形容器（１）から取出された繊維強化金
属製造用プリフォームは一般に予備加熱される。予備加
熱前に液体分を除くため８０〜１２０℃程度の温度で乾
燥しておいてもよい。As the high-pressure casting method, commonly used methods such as molten metal forging, die casting, and vacuum impregnation are used. In these methods, the preform for manufacturing fiber-reinforced metals taken out of the molding container (1) is generally preheated. Before preheating, it may be dried at a temperature of about 80 to 120° C. to remove liquid.
予備加熱温度は高圧鋳造法などの条件によって異なるが
、金属容器（８）にマトリックス金属と同じか同系統の
金属を用いた場合にはマトリックス金属の融点直下の温
度に、またマトリックス金属より融点の窩い金属を用い
た場合にはマトリックス金属の融点以上の温度とするこ
とが好ましい。予備加熱された繊維強化金属製造用プリ
フォームは高圧鋳造法などの鋳造型内に設置して、溶融
マトリックス金属を型内に注入し、直ちにプランジャー
で加圧し、溶融マトリックス金属をプリフォーム内に浸
透させる。溶融マトリックス金属が冷却凝固するまで加
圧を続けた後、成形品を型から取出して冷却し、繊維強
化金属を得る。The preheating temperature varies depending on the conditions such as the high-pressure casting method, but if the metal container (8) is made of the same metal or the same type of metal as the matrix metal, the preheating temperature may be just below the melting point of the matrix metal, or the temperature may be lower than the melting point of the matrix metal. When a hollow metal is used, the temperature is preferably higher than the melting point of the matrix metal. The preheated preform for manufacturing fiber-reinforced metals is placed in a casting mold using a high-pressure casting method, and the molten matrix metal is injected into the mold and immediately pressurized with a plunger to inject the molten matrix metal into the preform. Let it penetrate. After continuing to apply pressure until the molten matrix metal is cooled and solidified, the molded product is removed from the mold and cooled to obtain a fiber-reinforced metal.
上記の製造方法において、繊維分散液体（６）、金属容
器（８）などを変化させた実施例の結果を第１表に示す
。Table 1 shows the results of Examples in which the fiber dispersion liquid (6), metal container (8), etc. were changed in the above manufacturing method.
第３図はこの発明の他の実施例を示す断面図です成形容
器（１）のキャビティに金属容器（８）を設置した後成
形容器（１）を回転させ、金属容器（８）のキャビティ
に繊維分散液体（６）を注入し、同時に吸引口（５）か
ら減圧室（４）を減圧し、繊維分散液体（６）を吸引す
る。繊維分散液体（６）は遠心力によって成形容器（１
）の側壁に押しつけられ、金属容器（８）の貫通孔（９
）、フィルター（２）、および連通孔（３）を通って液
体のみが吸引され、繊維はフィルター（２）より内部に
堆積して行き、金属容器（８）およびそれと−体になっ
た円筒状のｍ維成形体（１０）からなる繊維強化金属製
造用プリフォームが製造される。この場合、回転速度を
あげれば遠心力のみにより液体をフィルター（２）を通
して分離することができる。また成形容器（１）中の繊
維分散液体（６）の液面は回転軸（１２）に平行に近づ
き、均一な厚さの円筒上繊維成形体（１０）を得ること
ができる。FIG. 3 is a sectional view showing another embodiment of the present invention. After the metal container (8) is installed in the cavity of the molded container (1), the molded container (1) is rotated and the metal container (8) is placed in the cavity. The fiber dispersion liquid (6) is injected, and at the same time, the vacuum chamber (4) is depressurized from the suction port (5) to suck the fiber dispersion liquid (6). The fiber dispersion liquid (6) is poured into a molded container (1) by centrifugal force.
) of the through-hole (9) of the metal container (8).
), filter (2), and communication hole (3), only the liquid is sucked in, and the fibers are deposited inside the filter (2), forming a metal container (8) and a cylindrical body formed with it. A preform for manufacturing fiber-reinforced metals consisting of the m-fiber molded body (10) is manufactured. In this case, if the rotational speed is increased, the liquid can be separated through the filter (2) only by centrifugal force. Further, the liquid level of the fiber dispersion liquid (6) in the molding container (1) approaches parallel to the rotation axis (12), making it possible to obtain a cylindrical fiber molded body (10) with a uniform thickness.
なお、以上の説明において、金属容器（８）の外形を同
一にして、キャビティのみを変化させれば。In addition, in the above description, if the outer shape of the metal container (8) is made the same and only the cavity is changed.
同一の繊維成形体成形装置および同一の高圧鋳造法など
の鋳造型を用いて、異なる形状の繊維強化金属を得るこ
とができる。これは高価な鋳造型を節約できるので、特
に少量多形状の繊維強化金属を高圧鋳造法などにより安
価に製造するのに適している。また金属容器（８）の貫
通孔（９）を小さくすれば、繊維成形体（１０）は貫通
孔（９）に入りこまないが、貫通孔（９）を大きくすれ
ば、繊維成形体（１０）は第２図のように貫通孔（９）
へ入りこみ、繊維成形体（１０）と金属容器（８）の接
合をピン止め効果により強固にすることが可能である。Fiber-reinforced metals of different shapes can be obtained using the same fiber compact forming apparatus and the same casting mold such as the same high-pressure casting method. Since this method saves expensive casting molds, it is particularly suitable for manufacturing small quantities of multi-shaped fiber-reinforced metals at low cost using high-pressure casting methods. Also, if the through hole (9) of the metal container (8) is made small, the fiber molded object (10) will not fit into the through hole (9), but if the through hole (9) is made large, the fiber molded object (10) will not fit into the through hole (9). ) is the through hole (9) as shown in Figure 2.
It is possible to strengthen the bond between the fiber molded body (10) and the metal container (8) by the pinning effect.
以上のようにこの発明によれば、繊維成形体を金属容器
と一体化させたので、高圧鋳造法などの際、繊維成形体
が変形あるいは破壊されることを防止する効果がある。As described above, according to the present invention, since the fibrous molded body is integrated with the metal container, there is an effect of preventing the fibrous molded body from being deformed or destroyed during high-pressure casting or the like.
また金属容器には開口部と１個以上の貫通孔を設けたの
で、溶融マトリックス金属の開口部からの流入、および
繊維成形体内のガスの貫通孔からの流出が起こり、これ
により溶融マトリックス金属の含浸不良が生じに＜＜。In addition, since the metal container was provided with an opening and one or more through holes, molten matrix metal could flow in through the opening and gas in the fiber compact could flow out through the through holes. Poor impregnation may occur.
健全な繊維強化金属を得ることができる。さらに金属容
器は繊維成形体の温度低下を防ぎ、繊維成形体の予備加
熱を確実にし、健全な繊維強化金属の製造に寄与する。A sound fiber-reinforced metal can be obtained. Furthermore, the metal container prevents the temperature of the fiber molded body from decreasing, ensures preheating of the fiber molded body, and contributes to the production of a sound fiber-reinforced metal.
また金属容器には開口部と１個以上の貫通孔を設けたの
で、従来と同様の抄紙法による繊維成形体成形装置によ
って、直接金属容器のキャビティに繊維成形体を一体化
成形することができ、金属容器へ繊維成形体を挿入する
工数を削減することができる。そして繊維成形体をマッ
トより切り出し容器へ詰める工程と比べると、高価なＩ
ｌｉ維の無駄を省くことができる。このため、特に少量
多形状の繊維強化金属を高圧鋳造法などで製造するにあ
たり、生産性および歩留の高い繊維強化金属製造用プリ
フォームが得られる。In addition, since the metal container has an opening and one or more through holes, it is possible to integrally mold the fiber molded body directly into the cavity of the metal container using a fiber molded body molding device using the same conventional papermaking method. , it is possible to reduce the number of steps required to insert the fiber molded body into the metal container. And compared to the process of cutting out the fiber molded material from the mat and packing it into containers, it is more expensive.
It is possible to eliminate waste of li fibers. Therefore, a preform for manufacturing fiber-reinforced metal with high productivity and high yield can be obtained, especially when manufacturing multi-shaped fiber-reinforced metal in small quantities by high-pressure casting or the like.
第１図はこの発明の一実施例を示す断面図、第２図は製
造された繊維強化金属製造用プリフォームの一部の断面
図、第３図はこの発明の他の実施例を示す断面図、第４
図は従来例を示す断面図である。
各図中、同一符号は同一または相当部分を示し、（１）
は成形容器、（２）はフィルター、（３）は連通孔、（
４）は減圧室、（５）は吸引口、（６）は繊維分散液体
、（８）は金属容器、（９）は貫通孔、（１０）は繊維
成形体である。FIG. 1 is a cross-sectional view showing one embodiment of the present invention, FIG. 2 is a cross-sectional view of a part of the manufactured preform for manufacturing fiber-reinforced metal, and FIG. 3 is a cross-sectional view showing another embodiment of the present invention. Figure, 4th
The figure is a sectional view showing a conventional example. In each figure, the same reference numerals indicate the same or corresponding parts, (1)
is a molded container, (2) is a filter, (3) is a communication hole, (
4) is a vacuum chamber, (5) is a suction port, (6) is a fiber dispersion liquid, (8) is a metal container, (9) is a through hole, and (10) is a fiber molded body.
Claims (5)
は繊維成形体の外形に対応する形状のキャビティおよび
開口部を有するとともに、底部または側面に１個以上の
貫通孔を有し、前記繊維成形体は短繊維が金属容器のキ
ャビティに直接成形一体化されたものであることを特徴
とする繊維強化金属製造用プリフォーム。(1) Consisting of a metal container and a fiber molded body, the metal container has a cavity and an opening shaped to correspond to the outer shape of the fiber molded body, and has one or more through holes in the bottom or side surface, and A fiber molded product is a preform for manufacturing fiber-reinforced metals characterized by short fibers being directly molded and integrated into the cavity of a metal container.
イトライド、アルミナ、チタン酸カリウムおよび金属か
ら選ばれる１種または２種以上のものからなることを特
徴とする特許請求の範囲第１項記載の繊維強化金属製造
用プリフォーム。(2) The fiber according to claim 1, wherein the short fiber is made of one or more selected from carbon, silicon carbide, silicon nitride, alumina, potassium titanate, and metal. Preforms for manufacturing reinforced metals.
繊維であることを特徴とする特許請求の範囲第１項また
は第２項記載の繊維強化金属製造用プリフォーム。(3) The preform for manufacturing fiber-reinforced metals according to claim 1 or 2, wherein the short fibers are whiskers or chopped long fibers.
とを特徴とする特許請求の範囲第１項ないし第３項のい
ずれかに記載の繊維強化金属製造用プリフォーム。(4) The preform for manufacturing fiber-reinforced metals according to any one of claims 1 to 3, wherein the fiber molded body contains a binder.
、前記金属容器に繊維分散液体を注入する工程と、前記
繊維分散液体をフィルターを通してキャビティの外から
吸引する工程とを含むことを特徴とする繊維強化金属製
造用プリフォームの製造方法。(5) The method includes the steps of placing a metal container in the cavity of the molded container, injecting a fiber dispersion liquid into the metal container, and suctioning the fiber dispersion liquid from outside the cavity through a filter. A method for manufacturing a preform for manufacturing fiber-reinforced metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61146524A JPH0713272B2 (en) | 1986-06-23 | 1986-06-23 | Preform for producing fiber reinforced metal and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61146524A JPH0713272B2 (en) | 1986-06-23 | 1986-06-23 | Preform for producing fiber reinforced metal and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS634032A true JPS634032A (en) | 1988-01-09 |
| JPH0713272B2 JPH0713272B2 (en) | 1995-02-15 |
Family
ID=15409598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61146524A Expired - Lifetime JPH0713272B2 (en) | 1986-06-23 | 1986-06-23 | Preform for producing fiber reinforced metal and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713272B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0297629A (en) * | 1988-09-30 | 1990-04-10 | Toyota Motor Corp | Production of metal-based composite material member |
| JPH02232325A (en) * | 1989-03-03 | 1990-09-14 | Sintokogio Ltd | Production of short fiber formed body |
| JP2001140027A (en) * | 1999-09-22 | 2001-05-22 | Electrovac Fabrikation Elektrotechnischer Spezialartikel Gmbh | Manufacturing method of metal matrix composite(mmc) component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59177336A (en) * | 1983-03-25 | 1984-10-08 | Nippon Denso Co Ltd | Production of fiber reinforced composite metallic material |
-
1986
- 1986-06-23 JP JP61146524A patent/JPH0713272B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59177336A (en) * | 1983-03-25 | 1984-10-08 | Nippon Denso Co Ltd | Production of fiber reinforced composite metallic material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0297629A (en) * | 1988-09-30 | 1990-04-10 | Toyota Motor Corp | Production of metal-based composite material member |
| JPH02232325A (en) * | 1989-03-03 | 1990-09-14 | Sintokogio Ltd | Production of short fiber formed body |
| JP2001140027A (en) * | 1999-09-22 | 2001-05-22 | Electrovac Fabrikation Elektrotechnischer Spezialartikel Gmbh | Manufacturing method of metal matrix composite(mmc) component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0713272B2 (en) | 1995-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4889177A (en) | Method and apparatus for sand moulding composite articles with a die made of light alloy and a fibrous insert | |
| CA2047739A1 (en) | Shaped bodies containing short inorganic fibers | |
| JPH09506328A (en) | Casting tool | |
| US5198167A (en) | Process for producing fiber molding for fiber-reinforced composite materials | |
| WO2017187133A1 (en) | Method, housing and apparatus for manufacturing a component | |
| US3841870A (en) | Method of making articles from powdered material requiring forming at high temperature | |
| JPS634032A (en) | Preform for producing fiber-reinforced metal and its production | |
| JP5334842B2 (en) | Molded body for powder sintered body, powder sintered body and production method thereof | |
| CN113275535B (en) | Forming die-casting process for improving performance of metal-based composite material | |
| JP3073105B2 (en) | Manufacturing method of light alloy composite member | |
| JPS62161463A (en) | Production of composite metallic material | |
| KR100311255B1 (en) | Apparatus for manufacturing ceramic preforms and method for manufacturing ceramic preforms using the same | |
| JPH11348059A (en) | Molding method of composite material, and molding tool thereof | |
| KR0116769Y1 (en) | Filter of ceramic fiber mold | |
| JPH017717Y2 (en) | ||
| JPS624843A (en) | Production of fiber-reinforced composite metallic material | |
| JP3282737B2 (en) | Manufacturing method of preform for composite material | |
| JPH05295471A (en) | Production of preform for composite material | |
| JPH0310023Y2 (en) | ||
| CN117550907A (en) | Preparation method of ultrahigh-strength rigid ceramic heat-insulating tile | |
| JPS62199739A (en) | Production of fibrous formed body for fiber reinforced composite material | |
| JPS61147824A (en) | Manufacture of fiber-reinforced material | |
| JPH08244018A (en) | Mold of hydraulic inorganic molded article | |
| JPS61283448A (en) | Production of composite metallic material | |
| JP2000238041A (en) | Molding method |