JPH0259028B2 - - Google Patents
Info
- Publication number
- JPH0259028B2 JPH0259028B2 JP60027937A JP2793785A JPH0259028B2 JP H0259028 B2 JPH0259028 B2 JP H0259028B2 JP 60027937 A JP60027937 A JP 60027937A JP 2793785 A JP2793785 A JP 2793785A JP H0259028 B2 JPH0259028 B2 JP H0259028B2
- Authority
- JP
- Japan
- Prior art keywords
- stirring
- crucible
- casting
- fibers
- molten metal
- 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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- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、アルミニウム合金に複合化繊維を含
有する鋳造用アルミニウム基複合材の製造装置に
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for manufacturing an aluminum matrix composite material for casting, which contains composite fibers in an aluminum alloy.
（従来技術及びその問題点）
従来、繊維強化した複合材料としては、プラス
チツクにおいてガラス繊維等を複合化させる
FRPが一般化されているが、金属系との複合化
（FRM）においても、強度増加、特に高温強度の
増加、弾性率を高めて剛性の向上、クリープ抵抗
の向上、耐摩耗性の向上、耐熱性の向上、減衰能
の向上、軽量化等の期待が大きく、最近、特に脚
光をあびている。(Prior art and its problems) Conventionally, fiber-reinforced composite materials include composite materials such as glass fibers in plastics.
FRP has become popular, but composites with metals (FRM) can also be used to increase strength, especially high-temperature strength, increase elastic modulus to improve rigidity, improve creep resistance, improve wear resistance, It has been attracting a lot of attention recently, as it has high expectations for improved heat resistance, improved damping ability, and lighter weight.
しかし、実際には繊維、又はこれら粒子と金属
との濡れ性等が悪く、容易に金属系との混合化が
図れず困難であつて、現状ではサンドイツチ方式
の複合材が実用化されようとしているに過ぎず、
今だ金属溶湯と繊維とを完全に混合する、所謂通
常の鋳造法による成形方法に実施可能なまでの複
合材は無く、また実験段階に過ぎない。 However, in reality, the wettability of fibers or these particles with metals is poor, making it difficult to mix them with metal systems.Currently, sandwich-based composite materials are on the verge of being put into practical use. It is nothing more than
As yet, there is no composite material that can be molded using the so-called normal casting method, in which molten metal and fibers are completely mixed, and it is only at the experimental stage.
（発明の目的）
本発明は、上記の如き事情に鑑みて、鋳造法に
適応するアルミニウム基複合材を実用化すべく、
鋳造用アルミニウム合金溶湯と、炭素繊維・カオ
ウール繊維（エソライト工業商品名）等種々の繊
維とを混合均一分散化（複合化）を図り得る鋳造
用アルミニウム基複合材の製造装置を提供するこ
と、を目的とする。(Object of the invention) In view of the above circumstances, the present invention aims to put into practical use an aluminum matrix composite material suitable for casting methods.
An object of the present invention is to provide an apparatus for manufacturing an aluminum base composite material for casting, which is capable of uniformly dispersing (compounding) a molten aluminum alloy for casting and various fibers such as carbon fiber and Kao wool fiber (trade name of Esorite Industries). purpose.
（発明の構成）
この為、本発明に係る鋳造用アルミニウム基複
合材の製造装置は、鋳造用アルミニウム合金を加
熱するルツボ中に、多段羽根を有する少なくとも
２本以上の撹拌軸を、隣接する撹拌軸の羽根が相
互に段違い交差する状態で配置すると共に、ルツ
ボの内壁を撹拌羽根の回転軌跡に沿つた形状と
し、隣接相互間で異なる回転速度となるよう撹拌
軸を回転させる手段と、ルツボの深さ方向中央域
に複合化繊維を注入する手段と、撹拌中の鋳造用
アルミニウム溶湯中へのエアー巻込み防止手段と
から構成されている。(Structure of the Invention) For this reason, the apparatus for producing an aluminum matrix composite material for casting according to the present invention has at least two or more stirring shafts each having multistage blades in a crucible that heats an aluminum alloy for casting. A means for rotating the stirring shaft such that the blades of the shaft are arranged so as to intersect with each other at different levels, and the inner wall of the crucible is shaped to follow the rotation locus of the stirring blades, and the rotation speed is different between adjacent ones; It consists of means for injecting composite fibers into the center region in the depth direction, and means for preventing air from being entrained in the molten aluminum for casting during stirring.
（発明の実施例）
図示装置は、鋳造用アルミニウム合金を収容し
加熱するルツボ手段１と、夫々に撹拌羽根４……
を付設した複数本の撹拌軸３，３′，３″……から
なり、複合化繊維の投入されたアルミニウム合金
溶湯ａに剪断力を与える状態で撹拌可能にルツボ
１ａ内に設置される撹拌混合手段２と、溶湯ａ中
へのエアー巻込み防止手段５と、溶湯ａ中に複合
化繊維ｂを押し込む繊維注入手段６とを有してお
り、上記ルツボ手段１におけるルツボ１ａの内壁
１ｂは、上記各撹拌軸３，３′，３″……における
撹拌羽根４……先端の回転軌跡に沿つた形状とし
て構成したものである。(Embodiment of the Invention) The illustrated apparatus includes a crucible means 1 for housing and heating an aluminum alloy for casting, and stirring blades 4 for each...
The stirring/mixing device is made up of a plurality of stirring shafts 3, 3', 3'', etc. attached to it, and is installed in the crucible 1a so as to be able to stir the molten aluminum alloy a into which the composite fibers have been charged while applying a shearing force. means 2, means 5 for preventing air entrainment into the molten metal a, and fiber injection means 6 for pushing composite fibers b into the molten metal a, and the inner wall 1b of the crucible 1a in the crucible means 1 has: The stirring blades 4 of each of the above-mentioned stirring shafts 3, 3', 3'', .
ルツボ手段１は、炉１ｃ内に受台１ｄを介して
ルツボ１ａを配設してある。このルツボ１ａ自体
は黒鉛又は鋳鉄製とすれば充分であり、又その内
壁面１ｂは、単なる円形や楕円形よりも上記撹拌
混合手段２における各撹拌軸３，３′，３″の撹拌
羽根４先端の回転軌跡に近似する形状、つまりそ
の曲率よりも僅かに大きい曲率をもつた凹面に形
成してある。従つて、図示例の如く複数本の撹拌
軸３，３′，３″を一列に配置した場合は、第２図
に示したように少なくとも内壁面全体は平面略変
形ひようたん形状等に形成して各撹拌軸３，３′，
３″間の左右（ルツボ内壁面側）に淀み部ができ
ないようにして、上記鋳造用アルミニウム合金溶
湯ａに複合化繊維ｂが均一に混合されるようにな
つている。 The crucible means 1 has a crucible 1a disposed in a furnace 1c via a pedestal 1d. It is sufficient that the crucible 1a itself is made of graphite or cast iron, and the inner wall surface 1b of the crucible 1a is not simply circular or elliptical, but rather the stirring blades 4 of each stirring shaft 3, 3', 3'' in the stirring and mixing means 2. It is formed into a concave surface with a shape that approximates the rotation locus of the tip, that is, a curvature slightly larger than the curvature of the tip. Therefore, as shown in the example shown in the figure, a plurality of stirring shafts 3, 3', 3'' are arranged in a line. When the stirring shafts 3, 3',
The composite fibers b are uniformly mixed into the molten aluminum alloy for casting a by preventing the formation of stagnation on the left and right sides (on the inner wall surface side of the crucible) between 3''.
撹拌混合手段２は、少なくとも２本以上の撹拌
軸３……を具備するが、図示例のように３本とす
る時は、上記ルツボ手段１の炉１ｃ上に架設され
た支持手段７の中心と、その左右両側に夫々回転
可能に主軸８と副軸８′，８″を支持し、該各軸
８，８′，８″に夫々撹拌軸３，３′，３″を連結し
て並行にルツボ１ａの底壁近傍まで垂設してあつ
て、上記主軸８は図示しない駆動源としての自動
変速モータに接続され、該主軸８と両副軸８′，
８″を歯車伝達機構９で連動連絡して、上記主軸
８が図示の矢印ｃ方向へ駆動回転されることで、
これと同一方向へ副軸８′，８″が夫々矢印c′，
c″で示したように回転するようにして、各撹拌軸
３，３′，３″の軸方向へ同一高さに２枚ないしは
４枚付設した撹拌羽根４……相互が上下方向へ変
位して噛み合い駆動回転されることで、繊維の投
入された鋳造用アルミニウム合金溶湯ａに剪断力
を働かせ、繊維を細かく均一に分散複合化できる
ようになつている。 The stirring and mixing means 2 is equipped with at least two or more stirring shafts 3. However, when there are three stirring shafts as shown in the illustration, the center of the supporting means 7 installed on the furnace 1c of the crucible means 1 is A main shaft 8 and a sub-shaft 8', 8'' are rotatably supported on both the left and right sides of the main shaft 8, and a stirring shaft 3, 3', 3'' is connected to each shaft 8, 8', 8'' in parallel. The main shaft 8 is connected to an automatic speed change motor as a drive source (not shown), and the main shaft 8 and both sub-shafts 8',
8'' through the gear transmission mechanism 9, and the main shaft 8 is driven and rotated in the direction of the arrow c shown in the figure.
In the same direction as this, the sub-shafts 8' and 8'' are indicated by arrows c' and 8'', respectively.
Two or four stirring blades 4 are attached at the same height in the axial direction of each stirring shaft 3, 3', 3'' so as to rotate as shown by c''...each other is displaced in the vertical direction. By meshing and driving and rotating, shearing force is applied to the molten aluminum alloy for casting a into which the fibers have been introduced, and the fibers can be finely and uniformly dispersed and composited.
副軸８′，８″の回転数は主８のそれと異なるよ
うに歯車伝達機構９のギヤ比を予め設定して設
け、又投入する繊維の種類や、投入％によつて粘
性の異なる場合、自由に回転数を変えることがで
きるようにしてある。 The gear ratio of the gear transmission mechanism 9 is set in advance so that the rotational speed of the secondary shafts 8', 8'' is different from that of the main shaft 8, and if the viscosity differs depending on the type of fiber to be input or the input percentage, The rotation speed can be changed freely.
ここで各種混合化繊維ｂの混合される溶湯ａ
は、その繊維ｂが固形のままの状態であつて、し
かも撹拌羽根４……自体は600〜800℃前後のアル
ミニウム合金溶湯にさらされるので、上記撹拌羽
根４……を鉄製とすると、上記溶湯ａによる浸食
以外にも固形繊維そのものによる摩擦損傷が激し
く、１〜２回の混合駆動で使用不可能となる。そ
こで撹拌軸３，３′，３″及び撹拌４……をセラミ
ツクス製、例えばSi3N4製、Al2O3製、高純Sic
製、α−Al2O3・TiO2等として高温時の耐摩耗性
を図つている。 Here, molten metal a into which various mixed fibers b are mixed
Since the fiber b remains solid and the stirring blade 4 itself is exposed to the molten aluminum alloy at around 600 to 800°C, if the stirring blade 4 is made of iron, the molten metal In addition to the erosion caused by a, the solid fiber itself causes severe frictional damage and becomes unusable after one or two mixing drives. Therefore, the stirring shafts 3, 3', 3'' and the stirring shaft 4... are made of ceramics, such as Si 3 N 4 , Al 2 O 3 , high purity SiC.
It is made of α-Al 2 O 3・TiO 2 etc. for wear resistance at high temperatures.
エアー巻込み防止手段５は、ルツボ１ａ内をポ
ンプ等で吸引して、内部全体を真空に保持するよ
うにするか、又は図示例のように溶湯ａ表面の全
体又は部分的を溶湯蓋５ａで覆う等して形成され
る。つまり、溶湯撹拌中に溶湯表面の湯のおどり
が激しく、それによつて溶湯中へのエアーの巻込
みも激しくなつて撹拌後金型に流し込んで鋳造さ
れた製品に鋳巣が生じるから、このようなことの
ないようエアー巻込み防止手段５を設けているも
のである。溶湯蓋５ａはセラミツク製又は鋳鉄製
何れでもよいが、溶湯の保温性、耐漏れ性におい
てはセラミツク製の方が優れる。 The air entrainment prevention means 5 may be configured to suck the inside of the crucible 1a with a pump or the like to maintain a vacuum inside the crucible 1a, or to cover the whole or part of the surface of the molten metal a with a molten metal lid 5a as shown in the illustrated example. Formed by covering, etc. In other words, while the molten metal is being stirred, the molten metal on the surface of the molten metal dances violently, which in turn causes air to be entrained into the molten metal. Air entrainment prevention means 5 is provided to prevent this from happening. The molten metal lid 5a may be made of either ceramic or cast iron, but ceramic is better in terms of heat retention of the molten metal and leakage resistance.
繊維注入手段６は、上部一側にホツパー６ａを
付設した繊維投入用ストーク６ｂと、繊維押し込
み用ピストン６ｃとから形成されている。ストー
ク６ｂはセラミツク製が望ましく、又ピストン６
ｃは鋳鉄製が用いられる。溶湯ａに繊維ｂを投入
する時、溶湯表面に投入するだけでは溶湯ａとの
漏れ性の悪い繊維、或いはカサ比重の軽い繊維は
溶湯表面に浮いてしまつて溶湯中に混合されな
い。その為繊維ｂを直接溶湯中に少しずつ押し込
み、ストーク６ｂのすぐ下の撹拌羽根４にて溶湯
中に繊維を拡散させるようにしたものである。 The fiber injection means 6 is formed of a fiber injection stalk 6b having a hopper 6a attached to one side of its upper part, and a fiber pushing piston 6c. The stalk 6b is preferably made of ceramic, and the piston 6b is preferably made of ceramic.
c is made of cast iron. When adding fibers B to the molten metal A, if the fibers are simply added to the surface of the molten metal, fibers that have poor leakage with the molten metal A or fibers with a light bulk specific gravity will float on the surface of the molten metal and will not be mixed into the molten metal. For this purpose, the fibers b are directly pushed into the molten metal little by little, and the fibers are dispersed into the molten metal using the stirring blade 4 just below the stalk 6b.
尚、混合化繊維ｂは、ホツパー６ａからストー
ク６ｂ中に入れ、然る後、自動又は手動にてピス
トン６ｃを押し下げ下降させて繊維ｂを溶湯ａに
押し込む様にする。又、炉１ｃとしては、シリコ
ニツト炉、又は重油、ガス炉等が用いられる。 The mixed fibers b are put into the stalk 6b from the hopper 6a, and then the piston 6c is pushed down automatically or manually to force the fibers b into the molten metal a. Further, as the furnace 1c, a siliconite furnace, a heavy oil or gas furnace, or the like is used.
（発明の作用・効果）
上記の如く構成した鋳造用アルミニウム基複合
材の製造装置では、ルツボ１ａ中で溶融加熱した
鋳造用アルミニウム合金湯の中にピストン６ｃに
より繊維を注入すると共に、撹拌軸３，３′，
３″を隣接相互間で異なる回転速度となるよう回
転させることにより、溶湯ａに剪断力を働かせて
繊維との混合化を図るものである。(Operations and Effects of the Invention) In the apparatus for manufacturing an aluminum matrix composite material for casting configured as described above, fibers are injected into the aluminum alloy hot water for casting melted and heated in the crucible 1a, and at the same time, fibers are injected by the piston 6c. ,3',
By rotating the molten metal 3'' at different rotational speeds between adjacent molten metals, shearing force is exerted on the molten metal a to mix it with the fibers.
又、隣接する撹拌軸の羽根４……が相互に段違
い交差する状態で配置されていると共に、ルツボ
１ａの内壁を撹拌羽根４……の回転軌跡に沿つた
状態とした為、ルツボ１ａの内に溶湯ａの淀みが
生ぜず、繊維の均一拡散化を図り得るものであ
る。 In addition, since the blades 4 of adjacent stirring shafts are arranged so as to intersect with each other at different levels, and the inner wall of the crucible 1a is placed along the rotation locus of the stirring blades 4, the inside of the crucible 1a is There is no stagnation of the molten metal a, and the fibers can be uniformly dispersed.
更に、エアー巻込み防止手段の存在により溶湯
と繊維の撹拌混合中に溶湯中へのエアー巻込みが
防止され、鋳造工程において鋳巣の生じることの
ない複合材となし得る。 Further, the presence of the air entrainment prevention means prevents air entrainment into the molten metal during stirring and mixing of the molten metal and fibers, and a composite material can be obtained in which no blowholes are formed during the casting process.
第１図は本発明に係る鋳造用アルミニウム基複
合材の製造装置の一実施例を示した縦断面図、第
２図は同装置に於けるルツボ手段及び撹拌混合手
段を示す平断面図である。
１……ルツボ手段、２……撹拌混合手段、３，
３′，３″……撹拌軸、４……撹拌羽根、５……エ
アー巻込み防止手段、６……繊維注入手段。
FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the apparatus for producing an aluminum matrix composite material for casting according to the present invention, and FIG. 2 is a plan cross-sectional view showing the crucible means and stirring and mixing means in the apparatus. . 1... Crucible means, 2... Stirring mixing means, 3,
3', 3''... Stirring shaft, 4... Stirring blade, 5... Air entrainment prevention means, 6... Fiber injection means.
Claims (1)
に、多段羽根を有する少なくとも２本以上の撹拌
軸を、隣接する撹拌軸の羽根が相互に段違い交差
する状態で配置すると共に、ルツボの内壁を撹拌
羽根の回転軌跡に沿つた形状とし、隣接相互間で
異なる回転速度となるよう撹拌軸を回転させる手
段と、ルツボの深さ方向中央域に複合化繊維を注
入する手段と、撹拌中の鋳造用アルミニウム溶湯
中へのエアー巻込み防止手段とを有すること、を
特徴とする鋳造用アルミニウム基複合材の製造装
置。 ２ 上記撹拌軸が並列配置された主軸と２本の副
軸とから成り、上記撹拌軸回転手段が、主軸と副
軸とに所定比による回転数差で回転力を伝達する
歯車伝達機構であること、を特徴とする特許請求
の範囲第１項に記載の鋳造用アルミニウム基複合
材の製造装置。[Scope of Claims] 1. At least two or more stirring shafts each having multistage blades are arranged in a crucible for heating an aluminum alloy for casting, with the blades of adjacent stirring shafts intersecting with each other, and the crucible is means for rotating the stirring shaft so that the inner wall of the crucible has a shape along the rotation locus of the stirring blade, and the rotation speed differs between adjacent ones; means for injecting the composite fiber into the central region in the depth direction of the crucible; 1. An apparatus for manufacturing an aluminum matrix composite material for casting, comprising a means for preventing air from being entrained into molten aluminum for casting. 2. The stirring shaft is composed of a main shaft and two subshafts arranged in parallel, and the stirring shaft rotation means is a gear transmission mechanism that transmits rotational force to the main shaft and the subshaft at a rotation speed difference based on a predetermined ratio. An apparatus for manufacturing an aluminum matrix composite material for casting according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60027937A JPS60244460A (en) | 1985-02-15 | 1985-02-15 | Apparatus for producing aluminum-base composite material for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60027937A JPS60244460A (en) | 1985-02-15 | 1985-02-15 | Apparatus for producing aluminum-base composite material for casting |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2879581A Division JPS57143456A (en) | 1981-02-27 | 1981-02-27 | Method and apparatus for manufacturing composite aluminum material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60244460A JPS60244460A (en) | 1985-12-04 |
| JPH0259028B2 true JPH0259028B2 (en) | 1990-12-11 |
Family
ID=12234808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60027937A Granted JPS60244460A (en) | 1985-02-15 | 1985-02-15 | Apparatus for producing aluminum-base composite material for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60244460A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4786467A (en) * | 1983-06-06 | 1988-11-22 | Dural Aluminum Composites Corp. | Process for preparation of composite materials containing nonmetallic particles in a metallic matrix, and composite materials made thereby |
| JP4990251B2 (en) * | 2008-09-19 | 2012-08-01 | 日精樹脂工業株式会社 | Composite method of carbon nanomaterial and magnesium-based alloy |
| CN111804886B (en) * | 2020-07-20 | 2021-06-18 | 哈尔滨吉星机械工程有限公司 | Preparation method of magnesium-based composite material applied to automobile differential support |
| CN112695222A (en) * | 2020-12-04 | 2021-04-23 | 南昌航空大学 | Stirring preparation experiment device for particle-reinforced aluminum-based composite material and use method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4869724A (en) * | 1971-12-23 | 1973-09-21 | ||
| JPS5187106A (en) * | 1974-12-28 | 1976-07-30 | Andeyusutorieru Do Konbyusuchi | FUKUGOGOKINOYOBISONOSEIHO |
| JPS5363221A (en) * | 1976-11-19 | 1978-06-06 | Doryokuro Kakunenryo | Preparation of complex material that use electromagnetic force |
-
1985
- 1985-02-15 JP JP60027937A patent/JPS60244460A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60244460A (en) | 1985-12-04 |
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