JPH06297131A - Manufacture of composite metallic material of uniform ceramics particle diffusion type - Google Patents
Manufacture of composite metallic material of uniform ceramics particle diffusion typeInfo
- Publication number
- JPH06297131A JPH06297131A JP10895193A JP10895193A JPH06297131A JP H06297131 A JPH06297131 A JP H06297131A JP 10895193 A JP10895193 A JP 10895193A JP 10895193 A JP10895193 A JP 10895193A JP H06297131 A JPH06297131 A JP H06297131A
- Authority
- JP
- Japan
- Prior art keywords
- crucible
- molten metal
- metallic material
- center
- manufacture
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、金属素地にセラミッ
クス粒子が均一に分散した複合金属材料を製造する方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a composite metal material in which ceramic particles are uniformly dispersed in a metal base.
【０００２】[0002]
【従来の技術】従来、一般に、金属素地にセラミックス
粒子が分散してなる複合金属材料、すなわちセラミック
ス粒子分散型複合金属材料（以下、単に複合金属材料と
いう）が各種機械装置の構造部材の製造に用いられてお
り、またこの複合金属材料の製造法としては、例えば特
開平４−２１０４３７号公報に記載される方法はじめ、
その他多くの方法が提案されている。2. Description of the Related Art Conventionally, a composite metal material in which ceramic particles are dispersed in a metal base, that is, a composite metal material in which ceramic particles are dispersed (hereinafter, simply referred to as a composite metal material) has been used for manufacturing structural members of various machines and devices. As a method of manufacturing the composite metal material, which is used, for example, the method described in JP-A-4-210437,
Many other methods have been proposed.
【０００３】[0003]
【発明が解決しようとする課題】一方、近年の各種機械
装置の小型化および軽量化に対する要求は厳しく、これ
に伴ない、これらの構造部材には薄肉化が強く求められ
ているが、従来方法で製造された上記複合金属材料にお
いては、セラミックス粒子の金属素地に対する分散性が
必ずしも良好なものでないため、これを薄肉化すると、
材質に局部的アンバランスが生じ、構造部材全体に亘っ
て均質な特性を確保することが困難になることから、満
足な薄肉化がはかれないのが現状である。On the other hand, in recent years, there has been a strict demand for miniaturization and weight reduction of various mechanical devices, and accordingly, thinning of these structural members has been strongly demanded. In the above-mentioned composite metal material produced in, since the dispersibility of the ceramic particles in the metal base is not always good, when thinning this,
At present, the material is locally unbalanced, and it becomes difficult to secure uniform properties over the entire structural member, so that it is not possible to achieve a satisfactory thinning.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明者等は、
上述のような観点から、材質的により均質な複合金属材
料を製造すべく研究を行った結果、内面円筒状のるつぼ
内に、前記るつぼの中心部に対して対称位置に２個の縦
軸回転の回転翼を装着し、上記回転翼を相反する方向に
回転させて、るつぼ内の金属溶湯にるつぼの中心部を通
過する金属溶湯流を発生させ、セラミックス粉末供給ホ
ッパの先端部を、上記るつぼの中心部を通過する直前の
金属溶湯流中に浸漬し、この位置でセラミックス粉末を
排出し、かかる状態で撹拌混合を行ない、鋳造すると、
金属素地へのセラミックス粒子の分散性にすぐれた複合
金属材料を製造することができるようになるという研究
結果を得たのである。Therefore, the present inventors have
From the above-mentioned viewpoint, as a result of research to manufacture a more homogeneous composite metal material, as a result, in the inner crucible of the cylindrical shape, two longitudinal rotations were made at symmetrical positions with respect to the center of the crucible. The rotating blades of the ceramic powder supply hopper, the rotating blades are rotated in opposite directions to generate a molten metal flow in the molten metal in the crucible passing through the center of the crucible, and the tip of the ceramic powder supply hopper is moved to the crucible. Immersion in the molten metal flow immediately before passing through the center of the, the ceramic powder is discharged at this position, stirring and mixing is performed in this state, and casting is performed.
They obtained the research result that it becomes possible to manufacture a composite metal material having excellent dispersibility of ceramic particles in a metal base.
【０００５】この発明は、上記の研究結果にもとづいて
なされたものであって、内面円筒状のるつぼ内に、前記
るつぼの中心部に対して対称位置に２個の縦軸回転の回
転翼を装着し、上記回転翼を相反する方向に回転させ
て、るつぼ内の金属溶湯、望ましくはＡｌ合金の溶湯に
るつぼの中心部を通過する金属溶湯流を発生させ、セラ
ミックス粉末供給ホッパの先端部を、上記るつぼの中心
部を通過する直前の金属溶湯流中に浸漬し、この位置で
セラミックス粉末、望ましくは炭化けい素、窒化けい
素、酸化けい素、酸化アルミニウム、および黒鉛（以
下、それぞれＳｉＣ、Ｓｉ3 Ｎ4 、ＳｉＯ2 、Ａｌ2 Ｏ
3 、およびＣで示す）の粉末および／またはウイスカを
含む短繊維を排出し、撹拌混合することにより金属素地
にセラミックス粒子が分散性良く分散した均質な複合金
属材料を製造する方法に特徴を有するものである。The present invention has been made on the basis of the above-mentioned research results, and two rotary blades of longitudinal rotation are provided in a cylindrical crucible having an inner surface in a symmetrical position with respect to the center of the crucible. The rotor blades are mounted and rotated in opposite directions to generate a molten metal flow in the crucible, preferably an Al alloy molten metal, which passes through the center of the crucible, and causes the tip of the ceramic powder supply hopper to move. Immersing in a molten metal flow immediately before passing through the center of the crucible, and at this position ceramic powder, preferably silicon carbide, silicon nitride, silicon oxide, aluminum oxide, and graphite (hereinafter, SiC, respectively, Si 3 N 4 , SiO 2 , Al 2 O
3 and C), and a short fiber containing a powder and / or whiskers is discharged and mixed by stirring to produce a homogeneous composite metal material in which ceramic particles are dispersed in a metal base with good dispersibility. It is a thing.
【０００６】[0006]
【実施例】つぎに、この発明の方法を実施例により図面
を参照しながら説明する。図１は本発明方法の実施装置
を示す概略縦断面図、図２は同概略平面図である。図示
される通り、まず、溶解保持炉２に設置されたるつぼ１
内でそれぞれ表１に示されるＪＩＳ規格のＡｌ合金：３
０kgを溶解し、この溶湯３を６８０〜７５０℃の範囲内
の所定の温度に保持した状態で、この溶湯内に、るつぼ
１の中心部に対して対称位置を保ちながら、幅：８０mm
×長さ：１５０mmの寸法をもった２本の縦軸回転の回転
翼４，４を挿入し、これら２個の回転翼を相反する方向
に同じ２００〜５００r.p.m.の範囲内の所定の回転速度
で回転して、るつぼ内の溶湯３にるつぼの中心部を通過
する溶湯流３ａを発生させ、ついでセラミックス粉末供
給ホッパ６の内径：２０mmφの先端部を上記るつぼの中
心部を通過する直前の溶湯流中に浸漬し、この位置で表
１に示される平均粒径（ウイスカの場合はアスペクト
比）をもった各種のセラミックス粉末５を同じく表１に
示した混合量排出し、１時間の撹拌混合を行なうことに
より本発明方法１〜６をそれぞれ実施し、以後金型中に
面圧：１００ＭＰａにて高圧鋳造して直径：２００mmφ
×長さ：３００mmの寸法をもった複合金属材料を製造し
た。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic vertical sectional view showing an apparatus for carrying out the method of the present invention, and FIG. 2 is a schematic plan view of the same. As shown in the figure, first, the crucible 1 installed in the melting and holding furnace 2.
JIS standard Al alloys shown in Table 1, respectively: 3
Width: 80 mm while melting 0 kg and maintaining the molten metal 3 at a predetermined temperature within the range of 680 to 750 ° C. while maintaining a symmetrical position in the molten metal with respect to the center of the crucible 1.
× Length: Insert two rotary blades 4 and 4 with a vertical axis rotation having a dimension of 150 mm, and rotate these two rotary blades in opposite directions at the same predetermined rotation within the range of 200 to 500 rpm. The molten metal 3 in the crucible is rotated at a speed to generate a molten metal flow 3a passing through the central part of the crucible, and then the inner diameter of the ceramic powder supply hopper 6 is 20 mmφ just before passing through the central part of the crucible. Immersion in a molten metal stream, and at this position, various ceramic powders 5 having the average particle size (aspect ratio in the case of whiskers) shown in Table 1 are discharged in the same mixing amount as shown in Table 1 and stirred for 1 hour. The methods 1 to 6 of the present invention were carried out by mixing, and thereafter, high pressure casting was performed in a mold at a surface pressure of 100 MPa and a diameter of 200 mmφ.
× Length: A composite metal material having a dimension of 300 mm was manufactured.
【０００７】ついで、この結果得られた各種の複合金属
材料から無作為に１０mm×１０mm×１０mmの寸法をもっ
た試験片をそれぞれ１０個づつ切出し、それぞれの試験
片中のセラミックス粒子の重量割合を測定した。この測
定結果を最大値、最小値、および平均値として表１に示
した。Then, 10 test pieces each having a size of 10 mm × 10 mm × 10 mm were randomly cut out from the various composite metal materials obtained as a result, and the weight ratio of the ceramic particles in each test piece was determined. It was measured. The measurement results are shown in Table 1 as the maximum value, the minimum value and the average value.
【０００８】[0008]
【表１】 [Table 1]
【０００９】[0009]
【発明の効果】表１に示される結果から、本発明方法１
〜６で製造された複合金属材料は、セラミックス粒子の
局部的バラツキがほとんどなく、このことはセラミック
ス粒子が均一に分散していることを示すことが明らかで
ある。上述のように、この発明の方法によれば、金属素
地にセラミックス粒子が均一に分散した複合金属材料を
製造することができ、したがってこの複合金属材料を用
いれば各種機械装置の小型化および軽量化に寄与できる
など工業上有用な効果がもたらされるのである。From the results shown in Table 1, the method 1 of the present invention
It is clear that the composite metal materials manufactured in any one of 6 to 6 have almost no local dispersion of ceramic particles, which indicates that the ceramic particles are uniformly dispersed. As described above, according to the method of the present invention, it is possible to manufacture a composite metal material in which ceramic particles are uniformly dispersed in a metal base. Therefore, by using this composite metal material, various mechanical devices can be made smaller and lighter. That is, an industrially useful effect such as being able to contribute to
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明方法の実施装置を示す概略縦断面図であ
る。FIG. 1 is a schematic vertical sectional view showing an apparatus for carrying out the method of the present invention.
【図２】図１の実施装置の概略平面図である。2 is a schematic plan view of the implementation device of FIG. 1. FIG.
１ るつぼ ２ 溶解保持炉 ３ 溶湯 ３ａ 溶湯流 ４ 回転翼 ５ セラミックス粉末 ６ ホッパ 1 crucible 2 melting and holding furnace 3 molten metal 3a molten metal flow 4 rotor 5 ceramic powder 6 hopper
Claims (3)
中心部に対して対称位置に２個の縦軸回転の回転翼を装
着し、 上記回転翼を相反する方向に回転させて、るつぼ内の金
属溶湯にるつぼの中心部を通過する金属溶湯流を発生さ
せ、 セラミックス粉末供給ホッパの先端部を、上記るつぼの
中心部をを通過する直前の金属溶湯流中に浸漬し、この
位置でセラミックス粉末を排出し、撹拌混合すること、
を特徴とする均質なセラミックス粒子分散型複合金属材
料の製造法。1. A cylindrical crucible having an inner surface on which two rotary blades having vertical axis rotations are mounted at symmetrical positions with respect to the center of the crucible, and the rotary blades are rotated in opposite directions to each other. A molten metal flow that passes through the center of the crucible is generated in the molten metal inside, and the tip of the ceramic powder supply hopper is immersed in the molten metal flow immediately before passing through the center of the crucible. Discharging the ceramic powder, stirring and mixing,
A method for producing a homogeneous ceramic particle-dispersed composite metal material characterized by:
特徴とする上記請求項１に記載の方法。2. The method according to claim 1, wherein the molten metal is an Al alloy.
窒化けい素、酸化けい素、酸化アルミニウム、および黒
鉛のうちの少なくともいずれかの粉末および／またはウ
イスカを含む短繊維からなることを特徴とする上記請求
項１に記載の方法。3. The ceramic powder is silicon carbide,
The method according to claim 1, wherein the method comprises a short fiber containing powder and / or whiskers of at least one of silicon nitride, silicon oxide, aluminum oxide and graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10895193A JPH06297131A (en) | 1993-04-12 | 1993-04-12 | Manufacture of composite metallic material of uniform ceramics particle diffusion type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10895193A JPH06297131A (en) | 1993-04-12 | 1993-04-12 | Manufacture of composite metallic material of uniform ceramics particle diffusion type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06297131A true JPH06297131A (en) | 1994-10-25 |
Family
ID=14497789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10895193A Pending JPH06297131A (en) | 1993-04-12 | 1993-04-12 | Manufacture of composite metallic material of uniform ceramics particle diffusion type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06297131A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014038459A1 (en) | 2012-09-04 | 2014-03-13 | 東洋炭素株式会社 | Metal-carbon composite material, method for producing metal-carbon composite material and sliding member |
-
1993
- 1993-04-12 JP JP10895193A patent/JPH06297131A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014038459A1 (en) | 2012-09-04 | 2014-03-13 | 東洋炭素株式会社 | Metal-carbon composite material, method for producing metal-carbon composite material and sliding member |
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