JPH02263936A - Manufacture of aluminum composite material - Google Patents
Manufacture of aluminum composite materialInfo
- Publication number
- JPH02263936A JPH02263936A JP8400189A JP8400189A JPH02263936A JP H02263936 A JPH02263936 A JP H02263936A JP 8400189 A JP8400189 A JP 8400189A JP 8400189 A JP8400189 A JP 8400189A JP H02263936 A JPH02263936 A JP H02263936A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- composite material
- molten metal
- rapid solidification
- added
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 title claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 9
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000000654 additive Substances 0.000 claims abstract description 14
- 238000007712 rapid solidification Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims description 6
- 238000001192 hot extrusion Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 239000000314 lubricant Substances 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 229910018125 Al-Si Inorganic materials 0.000 abstract 2
- 229910018520 Al—Si Inorganic materials 0.000 abstract 2
- 230000002618 waking effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009694 cold isostatic pressing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- -1 O3 is selected Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010227 cup method (microbiological evaluation) Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分舒〉
本発明は耐摩耗性等の優れたアルミニウム複合材料を製
造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application> The present invention relates to a method for producing an aluminum composite material with excellent wear resistance.
〈従来の技術〉
従来より、アルミニウム合金において耐摩耗性を向上さ
せるためにはＳｔの添加量を増加させればよいことが知
られている。しかし、従来の凝固法によるとＳｉの添加
量が最大１５重量％までであるので、耐摩耗性の向上に
も限界があった。<Prior Art> It has been known that in order to improve the wear resistance of aluminum alloys, it is sufficient to increase the amount of St added. However, according to the conventional coagulation method, the amount of Si added is up to 15% by weight, so there is a limit to the improvement in wear resistance.
ところで、近年、急冷凝固法が出現し、Ｓｉ添加量を増
大させた合金粉末が得られるようになった。したがって
、これを熱間押出法等により固化することにより、耐摩
耗性のより優れたアルミニウム合金が得られるようにな
った。しかし、この方法によってもＳｉの添加量は最大
３５重量％程度であゆ、さらに耐摩耗性の向上を要望さ
せる場合がある。By the way, in recent years, a rapid solidification method has appeared, and it has become possible to obtain alloy powder with an increased amount of Si added. Therefore, by solidifying this by hot extrusion or the like, it has become possible to obtain an aluminum alloy with better wear resistance. However, even with this method, the amount of Si added is at most about 35% by weight, and further improvement in wear resistance may be desired.
かか石場合、従来においては、Ａｌ−Ｓｉ系合金粉末に
硬質粒子や潤滑材を添加し、ボールミルで混合した後、
冷間静水圧法（ＣＩ Ｐ）により成形し、さらに熱間押
出すことにより固化し、耐摩耗性をさらに向上させた複
合材料を製造している。In the case of rock stones, in the past, hard particles and lubricants were added to Al-Si alloy powder, mixed in a ball mill, and then
We manufacture composite materials that are molded using cold isostatic pressing (CIP) and solidified by hot extrusion to further improve wear resistance.
〈発明が解決しようとする課題〉
しかしながら、前述した方法では粉末同志をボールミル
で混合するという手間がかかり、作業が煩雑であり、又
、完全に均一に混合するのが難かしいという問題がある
。<Problems to be Solved by the Invention> However, the method described above has the problem that it takes time and effort to mix the powders together using a ball mill, the work is complicated, and it is difficult to mix completely uniformly.
本発明はこのような問題点に鑑み、簡単な作業工程で良
質な材料を得ることができるアルミニウム複合材料の製
造方法を提供することを目的とする。SUMMARY OF THE INVENTION In view of these problems, an object of the present invention is to provide a method for manufacturing an aluminum composite material that allows a high-quality material to be obtained through simple work steps.
く課題を解決するための手段〉
前記目的を達成する本発明に係るアルミニウム複合材料
の製造方法は、Ａｌ−Ｓｉ系合金の溶湯中に添加材を添
加して混合した後、急冷凝固法により粉末にし、この急
冷凝固粉末を予備成形した後、熱間で押出すことにより
固化することを特徴とする。Means for Solving the Problems> The method for producing an aluminum composite material according to the present invention that achieves the above object includes adding additives to a molten Al-Si alloy, mixing them, and then forming powders by a rapid solidification method. This rapidly solidified powder is preformed and then hot extruded to solidify it.
く作 用〉
Ａｌ−８ｉ系合金の溶湯中に添加された添加材は、電磁
撹拌等により容易に均一に混合されろ。したがって、こ
れを急冷凝固粉末とした後、予備成形、熱間押出しを行
うことにより、粉末状態での混合工程を経ることな（添
加材を均一に含むＡｌ−Ｓｉ系合金からなる複合材料が
得られる。Effects> The additives added to the molten Al-8i alloy can be easily and uniformly mixed by electromagnetic stirring or the like. Therefore, by making this into a rapidly solidified powder and then preforming and hot extruding, a composite material made of an Al-Si alloy containing additives uniformly can be obtained without going through the mixing process in the powder state. It will be done.
ここで、添加材としてＳ ｉＣ，Ｓ ｉ、Ｎ、 Ａｌ２
Ｏ３などの硬質材料を選ぶと複合強化され、又、ＢＮな
どの潤滑材を選ぶと自己潤滑性を有することから共に耐
摩耗性が向上し、さらに、他の添加材を選定することに
より、所望の特性が向上される。Here, SiC, Si, N, Al2 are added as additives.
If a hard material such as O3 is selected, composite reinforcement will be achieved, and if a lubricant such as BN is selected, it will have self-lubricating properties, which will improve wear resistance.Furthermore, by selecting other additives, the desired strength will be achieved. characteristics are improved.
く実 施 例〉 以下、本発明を実施例に基づいて説明する。Practical example Hereinafter, the present invention will be explained based on examples.
まず、所望の配合、例えば＃４ｓ粍性合金とするにはＳ
ｉが２０〜３５重量％のＡｌ−Ｓｉ系合金を例えば６０
０〜７００℃に加熱して溶融し、この溶湯中に添加材を
添加して電磁撹拌により十分混合する。First, in order to obtain the desired composition, for example, #4s perishable alloy, S
For example, an Al-Si alloy in which i is 20 to 35% by weight is 60
The mixture is heated to 0 to 700°C to melt it, and additives are added to the molten metal and thoroughly mixed by electromagnetic stirring.
ここで、添加剤としてＳ ｉＣ，Ｓ ｉ、Ｎ、 、 Ａ
ｌ２０゜などの硬質材料を選ぶ場合には例えば粒径５〜
５０μｍ程度のものを１〜４重量％程度、又、ＢＮなど
の潤滑材を選ぶ場合には例えば粒径５〜５０μｍ程度の
ものを０．１〜２重量％添加すればよい。勿論、複数の
種類を混合して添加材としてもよい。Here, as additives S iC, S i, N, , A
When choosing a hard material such as 120°, for example, a particle size of 5~
Approximately 1 to 4% by weight of particles with particle diameters of approximately 50 μm may be added, or, when a lubricant such as BN is selected, 0.1 to 2% by weight of particles with a particle size of approximately 5 to 50 μm may be added. Of course, a plurality of types may be mixed to form an additive.
次に、との溶湯を急冷凝固法により粉末とする。急冷凝
固法としては、従来から知られているがスアトマイズ法
、遠心噴霧法１回転カップ法などを採用すればよい。例
えばガスアトマイズ法は、溶融金属の流れに、その局面
から窒素、アルゴンなどのガスジェットを衝突させて溶
融金属を細かく噴霧し、凝固させるものであり、これに
より、粒径２〜１００μｍ程度の粉末を得ることができ
る。Next, the molten metal is made into powder by a rapid solidification method. As the rapid solidification method, conventionally known methods such as the Suatomize method, the centrifugal spray method, and the one-rotation cup method may be employed. For example, in the gas atomization method, a jet of gas such as nitrogen or argon is collided with the flow of molten metal from the side of the flow to finely atomize the molten metal and solidify it. Obtainable.
このようにして得た急冷凝固粉末を例えばＣＩＰにより
円筒状などに予備成形した後、熱間で押出しすることに
より例えば棒状のアルミニウム複合材料を得ることがで
きる。The rapidly solidified powder obtained in this way is preformed into a cylindrical shape by, for example, CIP, and then hot extruded to obtain, for example, a rod-shaped aluminum composite material.
ここで、押出しは、例えば４００℃程度の温度で押出し
比２０： 工程度で行えばよい。Here, the extrusion may be performed at a temperature of, for example, about 400° C. and an extrusion ratio of 20:1.
急冷凝固粉末の表面には薄い酸化皮膜が形成されている
が、この酸化皮膜は押出し時に剥がれて球状にまるまり
、粉末同志が良好に金属結合した複合材料が得られる。A thin oxide film is formed on the surface of the rapidly solidified powder, but this oxide film peels off during extrusion and rolls up into a spherical shape, yielding a composite material in which the powders are well metallurgically bonded to each other.
なお、上述した急冷凝固法を全て非酸化性雰囲気中で行
えば酸化皮膜のない粉末が得られ、不純物の少ない複合
材料が得られる。Incidentally, if all of the above-described rapid solidification methods are performed in a non-oxidizing atmosphere, a powder without an oxide film can be obtained, and a composite material with few impurities can be obtained.
次に、＃４摩耗性を向上させた複合材料として、添加材
としてＳｉＣを用いたＡｌ−３５Ｓｉ−４Ｓ ｉ Ｃ，
又、ＳｉＣ及びＢＮを用いたＡｌ−３５Ｓｉ−４ＳｉＣ
−ＩＢＮをそれぞれ上述した方法により製造し、その耐
摩耗性を比較した。比較対象としては、添加剤なしのＡ
ｌ−３５Ｓｉ合金及び時効処理したアルミニウム（２０
２４−７６）を用いた。なお、耐摩耗性比較試験は、相
手材に炭素鋼８４５Ｃを用いて、大越式摩耗試験により
行った。Next, as a #4 composite material with improved wear resistance, Al-35Si-4S i C using SiC as an additive,
Also, Al-35Si-4SiC using SiC and BN
-IBN were produced by the methods described above, and their abrasion resistance was compared. For comparison, A without additives
l-35Si alloy and aged aluminum (20
24-76) was used. In addition, the wear resistance comparison test was conducted using carbon steel 845C as a mating material by the Okoshi type wear test.
この結果を第１図に示す。The results are shown in FIG.
この結果より、本発明方法により製造された複合材料は
、添加材を添加していないＡｌ−Ｓｉ系合金よりさらに
優れた耐摩耗性を有していることが認められた。From this result, it was confirmed that the composite material manufactured by the method of the present invention has even better wear resistance than the Al-Si alloy to which no additives are added.
〈発明の効果〉
以上説明したように、本発明に係るアルミニウム複合材
料の製造方法によれば、粉末段階での添加材の添加・混
合作業をすることなく、容易にアルミニウム複合材料を
得ることができ、しかも得られた複合材料は優れた特性
を有するものである。<Effects of the Invention> As explained above, according to the method for producing an aluminum composite material according to the present invention, an aluminum composite material can be easily obtained without adding or mixing additives at the powder stage. Moreover, the obtained composite material has excellent properties.
第１図は本発明の実施例における耐摩耗性の比較試験の
結果を示すグラフである。FIG. 1 is a graph showing the results of a comparative test of wear resistance in Examples of the present invention.
Claims (1)
後、急冷凝固法により粉末にし、この急冷凝固粉末を予
備成形した後、熱間で押出すことにより固化することを
特徴とするアルミニウム複合材料の製造方法。It is characterized by adding and mixing additives into a molten Al-Si alloy, turning it into powder using a rapid solidification method, preforming this rapidly solidifying powder, and then solidifying it by hot extrusion. Method for manufacturing aluminum composite materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8400189A JPH02263936A (en) | 1989-04-04 | 1989-04-04 | Manufacture of aluminum composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8400189A JPH02263936A (en) | 1989-04-04 | 1989-04-04 | Manufacture of aluminum composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02263936A true JPH02263936A (en) | 1990-10-26 |
Family
ID=13818302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8400189A Pending JPH02263936A (en) | 1989-04-04 | 1989-04-04 | Manufacture of aluminum composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02263936A (en) |
-
1989
- 1989-04-04 JP JP8400189A patent/JPH02263936A/en active Pending
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