JPS6224852A - Coating method for aluminum - Google Patents
Coating method for aluminumInfo
- Publication number
- JPS6224852A JPS6224852A JP16483685A JP16483685A JPS6224852A JP S6224852 A JPS6224852 A JP S6224852A JP 16483685 A JP16483685 A JP 16483685A JP 16483685 A JP16483685 A JP 16483685A JP S6224852 A JPS6224852 A JP S6224852A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- casting
- layer
- mold
- 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.)
- Pending
Links
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は鋳物の表面にアルミニウムをコーティングする
方法に関するものである。 ゛〔従来の技術〕
近年、各種車輛や機械類の部品及び構造材としてアルミ
ニウムの鋳物が広く使用されている。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of coating aluminum on the surface of a casting. [Prior Art] In recent years, aluminum castings have been widely used as parts and structural materials for various vehicles and machinery.
アルミニウムの鋳物は鉄の鋳物などに比べて軽いため、
これを用いた物品の軽量化に役立っている。しかし、反
面アルミニウムは化学的な活性が大きく、又状かいため
、特に耐食性、耐摩耗性が必要とされる場合はその表面
に酸化被膜を形成して使用する。Because aluminum castings are lighter than iron castings,
This helps reduce the weight of products using this material. However, on the other hand, aluminum is highly chemically active and has a ridged shape, so when particularly corrosion resistance and wear resistance are required, an oxide film is formed on its surface before use.
すなわち従来、アルミニウムの鋳物は陽極酸化を行ない
、表面に酸化アルミニウムの層を形成し、耐摩耗性、耐
食性を向上させて使用することが多い。That is, conventionally, aluminum castings are often used after being anodized to form a layer of aluminum oxide on the surface to improve wear resistance and corrosion resistance.
しかしながら、通常鋳物に用いるアルミニウム中には珪
素（Ｓｉ）や銅（Ｃｕ）が含まれているため陽極酸化し
ても均一な酸、化被膜が得られない。However, since aluminum normally used in castings contains silicon (Si) and copper (Cu), a uniform acid and oxide film cannot be obtained even when anodized.
又、鋳造の際純度の高いアルミニウムを用いると流動性
が悪く鋳造が困難である。Furthermore, when high-purity aluminum is used during casting, the fluidity is poor and casting is difficult.
本発明は上記従来技術の問題点を解決するｋめのもので
あり、その目的とするところは耐摩耗性及び耐食性に優
れ、又各種変法が可能であり、容易に且つ比較的安価に
実施することができるアルミニウムのコーティング方法
を提供することにある。The present invention is the kth one to solve the above-mentioned problems of the prior art, and its purpose is to have excellent wear resistance and corrosion resistance, to be able to be modified in various ways, and to be implemented easily and at relatively low cost. The purpose of the present invention is to provide a method for coating aluminum that can be coated with aluminum.
すなわち本発明のアルミニウムのコーティ／グ方法は、
鋳型の型面にアルミニウムを被覆し、該鋳型に溶湯を注
入した後冷却して、表面にアルミニウム層を有する鋳物
を成形し、更に該鋳物に陽極酸化を行うことを特徴とす
る。That is, the aluminum coating method of the present invention is as follows:
The method is characterized in that the surface of the mold is coated with aluminum, a molten metal is poured into the mold and then cooled to form a casting having an aluminum layer on the surface, and the casting is further anodized.
鋳型の型面にアルミニウムを被覆する方法は特に限定さ
れない。具体的には、アルミニウム粉末を適する溶剤例
えばアルコール、エステル、エーテル、ケトン中に分散
させるか又は界面活性剤を含む水中に分散させ、これを
型面の所定の場所にスプレー又ははけ等を用いて所定量
塗布する方法又は溶射ガ／を用いて所定厚さとなるよう
にアルミニウムを溶射する方法が挙げられる。又、外に
鋳型のキャビティ内Ｋ、膨張し′た場合に型面にほぼ対
応する大きさとなる所定厚さのアルミニウム箔製の袋を
挿入し、高圧の空気又は窒素などを前記袋内に導入して
、アルミニウム箔を型面に密着させる方法が挙げられる
。更に型面の所定の場所に予めアルミ箔を貼付しておい
てもよい。The method of coating the mold surface of the mold with aluminum is not particularly limited. Specifically, aluminum powder is dispersed in a suitable solvent such as alcohol, ester, ether, or ketone, or in water containing a surfactant, and then sprayed or brushed onto a predetermined location on the mold surface. Examples include a method of applying a predetermined amount of aluminum using a thermal spray gun, or a method of thermally spraying aluminum to a predetermined thickness using a thermal spray gun. In addition, a bag made of aluminum foil of a predetermined thickness is inserted into the cavity of the mold, and when it expands, it will have a size that approximately corresponds to the mold surface, and high-pressure air or nitrogen is introduced into the bag. An example of this method is to bring the aluminum foil into close contact with the mold surface. Furthermore, aluminum foil may be attached in advance to a predetermined location on the mold surface.
溶湯の種類はアルミニウムに限定されない。The type of molten metal is not limited to aluminum.
例えば鋳鉄、亜鉛、マグネシウム等積々のものを使用で
きる。温度等の製造条件は溶湯の種類や被覆すべきアル
ミニウム層の厚さなどを考慮して選択する。For example, many materials such as cast iron, zinc, and magnesium can be used. Manufacturing conditions such as temperature are selected in consideration of the type of molten metal and the thickness of the aluminum layer to be coated.
陽極酸化は通常の方法例えば鋳物を陽極とし、電気質水
溶液中で行うことができる。Anodic oxidation can be carried out by a conventional method, for example, using a casting as an anode in an electrolytic aqueous solution.
以下の実施例において本発明を更に詳細に説明する。な
お、本発明は下記実施例に限定されるものではない。The invention will be explained in further detail in the following examples. Note that the present invention is not limited to the following examples.
実施例１：
第１図に噴霧法を用いた例を示す。アルミニウム粉末を
アルコールなどの揮発性溶剤に所定濃度となるように分
散させる。この分散液を第１図（ａｌに示すように、ス
プレー装置１により金型２．３の型面のアルミニウム層
を形成したい部分に所定厚さに噴霧する。上記金型２．
３を常温に放置するか又は必要ならば加熱して溶剤を揮
発させ、型面にアルミニウム粉末層４を形成する。Example 1: Figure 1 shows an example using the spray method. Aluminum powder is dispersed in a volatile solvent such as alcohol to a predetermined concentration. As shown in FIG. 1 (al), this dispersion is sprayed to a predetermined thickness on the part of the mold surface of the mold 2.3 where the aluminum layer is to be formed using the spray device 1.
3 is left at room temperature or heated if necessary to volatilize the solvent to form an aluminum powder layer 4 on the mold surface.
次いで第１図ｆｂｌに示すように金型２，３を組付け、
湯口５より溶湯を注入して鋳造を行なう。溶湯によりア
ルミニウム粉末は溶融して鋳物６の表面に純度の高いア
ルミニウム層７を形成する。Next, as shown in Fig. 1fbl, the molds 2 and 3 are assembled,
Molten metal is injected from the sprue 5 to perform casting. The aluminum powder is melted by the molten metal to form a highly pure aluminum layer 7 on the surface of the casting 6.
なお、必要に応じてアルミニウム粉末が十分溶融するよ
うＫ、金型２，６の再加熱を行ってもよい。Note that, if necessary, the molds 2 and 6 may be reheated to sufficiently melt the aluminum powder.
実施例２：
第２図に本発明の別の実施例を示す。金型２゜６のキャ
ビティ内に、膨張した場合に型面にほぼ対応する大きさ
となる所定厚さのアルミニウム箔製の袋８を挿入する。Example 2: FIG. 2 shows another example of the present invention. A bag 8 made of aluminum foil with a predetermined thickness is inserted into the cavity of the mold 2.degree. 6, so that the bag 8 will have a size that approximately corresponds to the surface of the mold when expanded.
ヒータ９を用いて金型２，３を５００〜６００℃に加熱
しながら、アルミニウム箔製の袋８内に高圧空気を送り
込んで膨張させ、アルミニウム箔を金型２，５の型面に
密着させる。次いで湯口５より溶湯を注入して鋳造を行
列う。溶湯によりアルミニウム箔は溶融して表面に高純
度のアルミニウム層７を有する鋳物６を得る。アルミニ
ウム箔が十分に溶融するように、必要に応じて金型２，
３の再加熱を行なってもよい。While heating the molds 2 and 3 to 500 to 600°C using the heater 9, high-pressure air is sent into the aluminum foil bag 8 to expand it, and the aluminum foil is brought into close contact with the mold surfaces of the molds 2 and 5. . Next, molten metal is injected from the sprue 5 and casting is performed. The aluminum foil is melted by the molten metal to obtain a casting 6 having a high purity aluminum layer 7 on its surface. To ensure that the aluminum foil is sufficiently melted, mold 2,
3 may be reheated.
実施例３：
第３図に本発明の更に別の実施例を示す。金型２，５の
型面のアルミニウム層を形成したい部分に溶射ガン１０
を用いてアルミニウムをほぼ所定厚さに溶射してアルミ
ニウム溶射層１１を形成する。その後型を組付け、湯口
５より溶湯を注入して鋳造を行なう。溶湯によりアルミ
ニウム溶射層１１は溶融し、表面に純度の高いアルミニ
ウム層７を有する鋳物を得る。必要ならば、金型２，３
の再加熱を行なってもよい。Embodiment 3: FIG. 3 shows yet another embodiment of the present invention. A thermal spray gun 10 is applied to the part of the mold surface of the molds 2 and 5 where the aluminum layer is to be formed.
The aluminum sprayed layer 11 is formed by spraying aluminum to a substantially predetermined thickness. Thereafter, the mold is assembled, and molten metal is injected from the sprue 5 to perform casting. The aluminum sprayed layer 11 is melted by the molten metal to obtain a casting having a highly pure aluminum layer 7 on its surface. If necessary, molds 2 and 3
may be reheated.
又、溶射材料として純アルミニウム以外にもＣｕ、Ｓｉ
、Ｆｅ、Ｍｎ、Ｍｇ、Ｚｎ、Ｃｒ＋ Ｔｉ、Ｚｒなどの
成分を配合して溶射することにより、鋳物表面に各種の
アルミニウム合金を形成することができ、陽極酸化なし
でも、又は陽極酸化を併用することにより、鋳物に耐摩
耗性、耐食性等の特性を付与することができる。In addition to pure aluminum, Cu and Si are also used as thermal spraying materials.
By combining and thermal spraying components such as , Fe, Mn, Mg, Zn, Cr+ Ti, Zr, various aluminum alloys can be formed on the surface of castings, and can be formed without anodizing or in combination with anodizing. By doing so, properties such as wear resistance and corrosion resistance can be imparted to the casting.
〔発明の効果〕
上述のように本発明のアルミニウムのコーティング方法
は、型面にアルミニウムを被覆した鋳型を用いることに
より表面にアルミニウム層を有する鋳物を成形し、更に
該鋳物に陽極酸化を行うものであるため、種々の金線の
表面にアルミニウム層（又は酸化アルミニウム層）を設
けることができ機械的及び化学的特性の優れた鋳物を容
易に且つ比較的安価に得ることができる。又、アルミニ
ウム被覆層を種々のアルミニウム合金で形成したり、該
アルミニウム被覆層の形成方法を換えたり、あるいは陽
極酸化の条件を変化させる等各種変法が可能であり、種
々の要求に迅速に対応することができる。[Effects of the Invention] As described above, the aluminum coating method of the present invention involves forming a casting having an aluminum layer on the surface by using a mold whose surface is coated with aluminum, and further anodizing the casting. Therefore, an aluminum layer (or aluminum oxide layer) can be provided on the surface of various gold wires, and castings with excellent mechanical and chemical properties can be easily obtained at a relatively low cost. In addition, various modifications are possible, such as forming the aluminum coating layer with various aluminum alloys, changing the method of forming the aluminum coating layer, or changing the anodic oxidation conditions, allowing us to quickly respond to various requests. can do.
第１図ｆａｌ及び（ｂｌは本発明のアルミニウムのコー
ティング方法の一実施例の概略図、
第２図（ａ）及びｆｂｌは本発明の方法の別の実施例の
概略図、
第３図（ａ）及び（ｂ）は本発明の方法の更に別の実施
例の概略図である。
図中、
１・・・スプレー装置 ２，５．、、金型４９．・アル
ミニウム粉末ＮＩ ５・・湯口 ６・・・鋳物７・・・
アルミニウム層 ８・・・アルミニウム製の袋９・・・
ヒータ １０ 、、、溶射ガン１１・・・アルミニウム
溶射層
特許出願人 トヨタ自動車株式会社 、・−一也
・り
代理人 弁理士 萼 優 美 ・、−（ほか１
名）
樋１旦召Ｈ
ＩＫFigures 1 fal and (bl are schematic diagrams of one embodiment of the aluminum coating method of the present invention; Figures 2 (a) and fbl are schematic diagrams of another embodiment of the method of the present invention; Figure 3 (a) ) and (b) are schematic diagrams of still another embodiment of the method of the present invention. In the figures, 1... spray device 2, 5., mold 49., aluminum powder NI 5., sprue 6. ... Casting 7...
Aluminum layer 8...Aluminum bag 9...
Heater 10 , Thermal spray gun 11 ... Aluminum thermal spray layer Patent applicant Toyota Motor Corporation , - Kazuya Ri Representative Patent attorney Yumi Kaede , - (and others 1
name) gutter first call H IK
Claims (1)
入した後冷却して、表面にアルミニウム層を有する鋳物
を成形し、更に該鋳物に陽極酸化を行うことを特徴とす
るアルミニウムのコーティング方法。A method for coating aluminum, which comprises coating the surface of a mold with aluminum, pouring molten metal into the mold and cooling it to form a casting having an aluminum layer on the surface, and further anodizing the casting. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16483685A JPS6224852A (en) | 1985-07-25 | 1985-07-25 | Coating method for aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16483685A JPS6224852A (en) | 1985-07-25 | 1985-07-25 | Coating method for aluminum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6224852A true JPS6224852A (en) | 1987-02-02 |
Family
ID=15800848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16483685A Pending JPS6224852A (en) | 1985-07-25 | 1985-07-25 | Coating method for aluminum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6224852A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01100298A (en) * | 1987-10-12 | 1989-04-18 | Toyota Motor Corp | Formation of anodic oxide film on aluminum alloy casting |
| JPWO2008081748A1 (en) * | 2006-12-28 | 2010-04-30 | 国立大学法人東北大学 | Structural member used in semiconductor or flat display manufacturing apparatus and manufacturing method thereof |
-
1985
- 1985-07-25 JP JP16483685A patent/JPS6224852A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01100298A (en) * | 1987-10-12 | 1989-04-18 | Toyota Motor Corp | Formation of anodic oxide film on aluminum alloy casting |
| JPWO2008081748A1 (en) * | 2006-12-28 | 2010-04-30 | 国立大学法人東北大学 | Structural member used in semiconductor or flat display manufacturing apparatus and manufacturing method thereof |
| US8642187B2 (en) | 2006-12-28 | 2014-02-04 | National University Corporation Tohoku University | Structural member to be used in apparatus for manufacturing semiconductor or flat display, and method for producing the same |
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