JP3234541B2 - Aluminum alloy plate for hard disk drive case and hard disk drive case or hard disk drive device using said aluminum alloy plate - Google Patents
Aluminum alloy plate for hard disk drive case and hard disk drive case or hard disk drive device using said aluminum alloy plateInfo
- Publication number
- JP3234541B2 JP3234541B2 JP19392697A JP19392697A JP3234541B2 JP 3234541 B2 JP3234541 B2 JP 3234541B2 JP 19392697 A JP19392697 A JP 19392697A JP 19392697 A JP19392697 A JP 19392697A JP 3234541 B2 JP3234541 B2 JP 3234541B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- hard disk
- disk drive
- resin film
- organic resin
- 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 - Fee Related
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ハードディスクド
ライブ（ＨＤＤ）装置のケースなどに用いられるアルミ
ニウム合金板、および前記アルミニウム合金板が用いら
れたハードディスクドライブケースまたはハードディス
クドライブ装置に関する。The present invention relates to an aluminum alloy plate used for a case of a hard disk drive (HDD) device, and a hard disk drive case or a hard disk drive device using the aluminum alloy plate.
【０００２】[0002]
【従来の技術】コンピュータやワードプロセッサなどの
記憶メディアとしてハードディスクドライブ（ＨＤＤ）
が使用されており、このハードディスクドライブのケー
ス部材には、従来より、アルミニウムダイキャスト材が
使用されていた。しかしアルミニウムダイキャスト材は
重いため携帯に不便であり、防食処理や着色処理を、１
個ずつ個別に、塗装やアルマイト処理で行うため生産性
およびコストの面で不利であった。2. Description of the Related Art Hard disk drives (HDDs) are used as storage media for computers and word processors.
Aluminum die-cast material has been used for the case member of this hard disk drive. However, aluminum die-cast material is heavy and inconvenient to carry.
This is disadvantageous in terms of productivity and cost because it is carried out individually by painting or anodizing.
【０００３】[0003]
【発明が解決しようとする課題】そこで、アルミニウム
合金板にクロメート皮膜を形成し、その上に潤滑剤を含
む有機樹脂皮膜を形成して成形加工性を改善したアルミ
ニウム合金板が提案された（特開平６-55137号公報）。
しかし、このアルミニウム合金板は有機樹脂皮膜が両面
に形成されており、これをハードディスクドライブケー
スに用いると、有機樹脂皮膜からガスが発生して、部品
が誤動作したり、故障したりするという問題があった。
また、アルミニウム合金板の片面に有機樹脂皮膜を形成
した軽量で、強度、成形性、電磁シールド性に優れるフ
ロッピーディスクドライブケース用アルミニウム板が提
案された（特公平６-70870号）が、これを深絞り加工に
よりハードディスクケースに成形しようとすると、合金
板が破断してしまうという問題があった。このようなこ
とから、本発明者等は、アルミニウム合金板の成形加工
性の改善について鋭意研究を行い、アルミニウム合金板
に有機樹脂皮膜を厚く形成し、また表面粗度を規定する
などにより、成形加工性を大幅に改善し得ることを知見
し、さらに研究を進めて本発明を完成させるに至った。
本発明の目的は、成形加工性に優れ、使用中に発生する
ガスで部品または装置の機能が阻害されないハードディ
スクドライブケース用アルミニウム合金板、および前記
アルミニウム合金板を用いたハードディスクドライブケ
ースまたはハードディスクドライブ装置を提供すること
にある。Therefore, there has been proposed an aluminum alloy plate in which a chromate film is formed on an aluminum alloy plate, and an organic resin film containing a lubricant is formed thereon to improve the formability. JP-A-6-55137).
However, this aluminum alloy plate has an organic resin film formed on both sides, and when this is used for a hard disk drive case, gas is generated from the organic resin film, which causes a problem that components may malfunction or break down. there were.
In addition, a lightweight aluminum plate with an organic resin film formed on one side of an aluminum alloy plate and excellent in strength, moldability and electromagnetic shielding properties for a floppy disk drive case was proposed (Japanese Patent Publication No. 6-70870). When the hard disk case is formed by deep drawing, there is a problem that the alloy plate is broken. Therefore, the present inventors have conducted intensive studies on the improvement of the formability of the aluminum alloy plate, formed a thick organic resin film on the aluminum alloy plate, and defined the surface roughness by forming the organic resin film. The inventors have found that the workability can be significantly improved, and further research has led to the completion of the present invention.
An object of the present invention is to provide an aluminum alloy plate for a hard disk drive case that has excellent moldability and does not impair the function of parts or devices due to gas generated during use, and a hard disk drive case or a hard disk drive device using the aluminum alloy plate Is to provide.
【０００４】[0004]
【課題を解決するための手段】請求項１記載の発明は、
引張強さが７５ＭＰａ以上、耐力が２５ＭＰａ以上、伸
びが１０％以上のアルミニウム合金素板の片面に、摩擦
係数が０．３以下、表面粗度Ｒａが１．０〜３０μｍの
有機樹脂皮膜が６μｍ以上の厚さに形成されていること
を特徴とするハードディスクドライブケース用アルミニ
ウム合金板である。According to the first aspect of the present invention,
One side of an aluminum alloy base plate having a tensile strength of 75 MPa or more, a proof stress of 25 MPa or more, and an elongation of 10% or more, an organic resin film having a friction coefficient of 0.3 or less and a surface roughness Ra of 1.0 to 30 μm is 6 μm. An aluminum alloy plate for a hard disk drive case, which is formed to have the above thickness.
【０００５】請求項２記載の発明は、アルミニウム合金
素板上に下地皮膜が形成され、その上に有機樹脂皮膜が
形成されていることを特徴とする請求項１記載のハード
ディスクドライブケース用アルミニウム合金板である。According to a second aspect of the present invention, there is provided an aluminum alloy for a hard disk drive case according to the first aspect, wherein a base film is formed on the aluminum alloy base plate, and an organic resin film is formed thereon. It is a board.
【０００６】請求項３記載の発明は、有機樹脂皮膜中に
潤滑剤が含有され、前記潤滑剤がワックス、フッ素樹
脂、または無機潤滑剤のうちの少なくとも１種であるこ
とを特徴とする請求項１または２記載のハードディスク
ドライブケース用アルミニウム合金板である。According to a third aspect of the present invention, a lubricant is contained in the organic resin film, and the lubricant is at least one of a wax, a fluororesin, and an inorganic lubricant. 3. An aluminum alloy plate for a hard disk drive case according to 1 or 2.
【０００７】請求項４記載の発明は、有機樹脂皮膜に、
有機樹脂皮膜の厚さより大きい径の骨材が含有されてい
ることを特徴とする請求項１、２、３のいずれかに記載
のハードディスクドライブケース用アルミニウム合金板
である。[0007] The invention according to claim 4 is to provide an organic resin film,
4. The aluminum alloy plate for a hard disk drive case according to claim 1, wherein an aggregate having a diameter larger than the thickness of the organic resin film is contained.
【０００８】請求項５記載の発明は、骨材がナイロン系
骨材またはアクリル系骨材の少なくとも１種であること
を特徴とする請求項４記載のハードディスクドライブケ
ース用アルミニウム合金板である。なお、骨材とは、有
機樹脂皮膜中に含まれる樹脂微粉体のことである。The invention according to claim 5 is the aluminum alloy plate for a hard disk drive case according to claim 4, wherein the aggregate is at least one of a nylon-based aggregate and an acrylic-based aggregate. The aggregate is a fine resin powder contained in the organic resin film.
【０００９】請求項６記載の発明は、有機樹脂皮膜が、
アクリル系樹脂、エステル系樹脂、エチレン系樹脂、エ
ポキシ系樹脂、フェノール系樹脂、フッ素系樹脂、また
はポリアミド系樹脂のうちの少なくとも１種から構成さ
れていることを特徴とする請求項１、２、３、４、５の
いずれかに記載のハードディスクドライブケース用アル
ミニウム合金板である。According to a sixth aspect of the present invention, the organic resin film comprises:
3. The method according to claim 1, wherein the resin is made of at least one of an acrylic resin, an ester resin, an ethylene resin, an epoxy resin, a phenol resin, a fluorine resin, and a polyamide resin. An aluminum alloy plate for a hard disk drive case according to any one of 3, 4, and 5.
【００１０】請求項７記載の発明は、請求項１、２、
３、４、５、６のいずれかに記載のアルミニウム合金板
が成形加工され、有機樹脂皮膜形成面を外側にして用い
られていることを特徴とするハードディスクドライブケ
ースである。[0010] The invention according to claim 7 is based on claims 1 and 2,
A hard disk drive case characterized in that the aluminum alloy plate described in any one of 3, 4, 5, and 6 is formed and used with an organic resin film forming surface facing outward.
【００１１】請求項８記載の発明は、請求項１、２、
３、４、５、６のいずれかに記載のアルミニウム合金板
が成形加工され、有機樹脂皮膜形成面を外側にして用い
られていることを特徴とするハードディスクドライブ装
置である。[0011] The invention according to claim 8 is the invention according to claims 1, 2,
A hard disk drive device, wherein the aluminum alloy plate according to any one of 3, 4, 5, and 6 is formed and used with the surface on which an organic resin film is formed facing outward.
【００１２】[0012]
【発明の実施の形態】本発明において、アルミニウム合
金は、所要強度を有し、着色が容易で、かつ軽量なため
好適である。本発明において、アルミニウム合金板の引
張強さを７５ＭＰａ以上、耐力を２５ＭＰａ以上に規定
する理由は、引張強さが７５ＭＰａ未満でも、耐力が２
５ＭＰａ未満でも成形加工時やハードディスクケースに
組立てる際などにアルミニウム合金板が変形するためで
ある。また伸びを１０％以上に規定した理由は、１０％
未満では成形時に破断割れが生じるためである。本発明
において、片面にのみ有機樹脂皮膜を形成する理由は、
有機樹脂皮膜形成面を外側にして部品などを形成して、
有機樹脂から発生するガスの弊害を阻止するためであ
る。本発明において、有機樹脂皮膜は、脱脂処理したア
ルミニウム合金板上に直接形成しても良いが、アルミニ
ウム合金板上に下地皮膜を形成し、その上に有機樹脂皮
膜を形成すると、耐食性および密着性が向上する。下地
皮膜の形成には、化成処理法、アルマイト処理法、めっ
き法などが適用される。前記化成処理法には、反応型ま
たは塗布型の、クロメート系、ジルコニウム系、チタニ
ウム系、りん酸塩系などの任意の処理液が適用できる。
前記処理液の中では、クロメート系、ジルコニウム系、
チタニウム系処理液を用いた化成処理法が、生産性、コ
スト、および性能安定性（密着性など）などの面から望
ましい。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, an aluminum alloy is preferable because it has a required strength, is easily colored, and is lightweight. In the present invention, the reason why the tensile strength of the aluminum alloy sheet is defined as 75 MPa or more and the proof stress is defined as 25 MPa or more is that even if the tensile strength is less than 75 MPa, the proof stress is 2 MPa.
This is because even at less than 5 MPa, the aluminum alloy plate is deformed at the time of molding or assembling into a hard disk case. The reason why the elongation is specified as 10% or more is 10%
If the ratio is less than the above, breakage cracks occur during molding. In the present invention, the reason for forming the organic resin film only on one side is as follows.
Forming parts etc. with the organic resin film formation side outside,
This is to prevent the adverse effects of the gas generated from the organic resin. In the present invention, the organic resin film may be formed directly on the degreased aluminum alloy plate, but if an undercoat film is formed on the aluminum alloy plate and the organic resin film is formed thereon, corrosion resistance and adhesion Is improved. A chemical conversion treatment, an alumite treatment, a plating method, or the like is applied to the formation of the base coat. For the chemical conversion treatment method, any treatment liquid such as a chromate-based, a zirconium-based, a titanium-based, or a phosphate-based treatment solution can be used.
Among the treatment liquids, chromate-based, zirconium-based,
A chemical conversion treatment method using a titanium-based treatment liquid is desirable in terms of productivity, cost, and performance stability (adhesion, etc.).
【００１３】有機樹脂皮膜には、アクリル系、エステル
系、エチレン系、エポキシ系、フェノール系、フッ素
系、ポリアミド系などの樹脂や、これら樹脂の共重合体
が使用できる。有機樹脂皮膜の形成には、塗料として塗
装する方法、フィルム状樹脂を接着（ラミネート）する
方法などが適用される。有機樹脂皮膜を塗装により形成
する場合は、界面活性剤、レベリング剤、沈殿防止剤、
帯電防止剤、増粘剤を適量添加すると良好な仕上がりが
得られる。As the organic resin film, resins such as acrylic, ester, ethylene, epoxy, phenol, fluorine and polyamide resins and copolymers of these resins can be used. For forming the organic resin film, a method of painting as a paint, a method of bonding (laminating) a film-like resin, and the like are applied. When forming an organic resin film by painting, a surfactant, a leveling agent, a suspending agent,
A good finish can be obtained by adding an appropriate amount of an antistatic agent and a thickener.
【００１４】本発明において、 有機樹脂皮膜の摩擦係
数を 0.3以下とすることにより、優れた成形加工性が確
保できる。摩擦係数を 0.3以下にするには、それ自体が
摩擦係数の低い有機樹脂皮膜を用いる方法、潤滑剤を添
加した有機樹脂を用いる方法などが適用される。前記潤
滑剤には、ポリエチレンワックスやポリプロピレンワッ
クスなどの石油ワックス、カルナウパワックスなどの天
然ワックス、ポリ四フッ化エチレン（ＰＴＦＥ）、ポリ
フッ化ビニリデンなどのフッ素樹脂化合物、グラファイ
ト、二硫化モリブデンなどの無機潤滑剤、これらの混合
物、などが用いられる。有機樹脂皮膜に含有させる潤滑
剤の量は、０．５wt% 未満では十分な潤滑効果が得られ
ない。潤滑剤は多いほど摩擦係数は低下するが、３０wt
% を超えると有機樹脂皮膜とアルミニウム合金板との密
着性が低下する。したがって前記潤滑剤の量は０．５〜
３０wt% が適量である。In the present invention, by setting the coefficient of friction of the organic resin film to 0.3 or less, excellent moldability can be ensured. In order to reduce the friction coefficient to 0.3 or less, a method using an organic resin film having a low friction coefficient itself, a method using an organic resin to which a lubricant is added, and the like are applied. Examples of the lubricant include petroleum waxes such as polyethylene wax and polypropylene wax, natural waxes such as carnaupa wax, fluorine resin compounds such as polytetrafluoroethylene (PTFE) and polyvinylidene fluoride, and inorganic materials such as graphite and molybdenum disulfide. Lubricants, mixtures thereof, and the like are used. If the amount of the lubricant contained in the organic resin film is less than 0.5% by weight, a sufficient lubricating effect cannot be obtained. The coefficient of friction decreases as the amount of lubricant increases.
%, The adhesion between the organic resin film and the aluminum alloy plate is reduced. Therefore, the amount of the lubricant is 0.5 to
30 wt% is an appropriate amount.
【００１５】本発明では、有機樹脂皮膜に着色顔料や染
料を添加しておくと、意匠性の付与、塗装工程の省略な
どが可能になる。またシリカ化合物やアルミナ化合物を
添加することにより有機樹脂皮膜が強化され成形加工性
が向上する。前記化合物の過度の添加は皮膜性能を低下
させるので注意する必要がある。In the present invention, if a coloring pigment or a dye is added to the organic resin film, it is possible to impart design and omit a coating step. Further, by adding a silica compound or an alumina compound, the organic resin film is strengthened and the moldability is improved. It should be noted that excessive addition of the above compound deteriorates the film performance.
【００１６】本発明において、有機樹脂皮膜の表面粗度
Ｒａを１．０〜３０μｍに規定する理由は、前記Ｒａが
１．０μｍ未満では、潤滑油を保持する凹部が浅すぎて
潤滑油が十分保持されなくなり、３０μｍを超えると凹
部に潤滑油が入り込んで表面に出難くなり、表面凸部の
頂点近傍が無潤滑に近い状態となり、いずれの場合も成
形加工性が悪化するためである。有機樹脂皮膜の表面粗
度Ｒａを１．０〜３０μｍに制御する方法としては、有
機樹脂皮膜の厚さより大きい径の骨材を有機樹脂皮膜に
含ませる方法、粗面ロールで圧延する方法など任意の方
法が適用される。前記骨材にはアクリル系骨材、ナイロ
ン系骨材など任意の骨材が使用できる。骨材を含有させ
ることにより、成形加工性の向上とともに、意匠性も付
与される。なお、有機樹脂皮膜の表面粗度Ｒａは、５〜
２０μｍが最も望ましい。本発明における高度の成形加
工性は、アルミニウム合金素板の持つ機械的特性と有機
樹脂皮膜の摩擦係数や表面粗度との相乗効果によって達
成される。In the present invention, the reason why the surface roughness Ra of the organic resin film is specified to be 1.0 to 30 μm is that when the Ra is less than 1.0 μm, the concave portion for holding the lubricating oil is too shallow and the lubricating oil is insufficient. This is because lubricating oil does not enter the concave portion and hardly comes out to the surface when the thickness exceeds 30 μm, and the vicinity of the top of the convex portion on the surface becomes almost non-lubricated, and in any case, moldability deteriorates. As a method of controlling the surface roughness Ra of the organic resin film to 1.0 to 30 μm, an arbitrary method such as a method of including an aggregate having a diameter larger than the thickness of the organic resin film in the organic resin film, a method of rolling with a rough roll, or the like Method is applied. An arbitrary aggregate such as an acrylic aggregate and a nylon aggregate can be used as the aggregate. By including the aggregate, not only the moldability is improved but also the designability is imparted. The surface roughness Ra of the organic resin film is 5 to 5.
20 μm is most desirable. The high formability in the present invention is achieved by a synergistic effect of the mechanical properties of the aluminum alloy base plate and the friction coefficient and surface roughness of the organic resin film.
【００１７】本発明において、有機樹脂皮膜の厚さを６
μｍ以上に規定する理由は、６μｍ未満では成形加工す
る時に樹脂皮膜が均一に延びず、樹脂皮膜の凸部が脱落
して成形加工性が低下するためである。しかし有機樹脂
皮膜があまり厚くなると皮膜の内部応力が大きくなり成
形時のアルミニウム合金素板の変形に樹脂皮膜が追従で
きなくなって剥離するので、５０μｍ以下が望ましい。
有機樹脂皮膜は、密着性や耐食性を向上させるために２
層以上形成することもできる。２層以上に形成すると密
着性や耐食性が一層向上する。In the present invention, the thickness of the organic resin film is set to 6
The reason why the thickness is specified to be not less than 6 μm is that when the thickness is less than 6 μm, the resin film does not extend uniformly during the molding process, and the convex portions of the resin film fall off to deteriorate the moldability. However, when the organic resin film is too thick, the internal stress of the film increases, and the resin film cannot follow the deformation of the aluminum alloy base plate during molding and peels off. Therefore, the thickness is preferably 50 μm or less.
Organic resin film is used to improve adhesion and corrosion resistance.
More than two layers can be formed. When formed in two or more layers, adhesion and corrosion resistance are further improved.
【００１８】[0018]
【実施例】以下に本発明を実施例により詳細に説明す
る。 （実施例１） 表１に示す厚さ0.75mmのアルミニウム合金板（アルミニ
ウム合金素板）に脱脂、水洗、下地処理を順に施し、そ
の上に有機樹脂皮膜を形成してハードディスクドライブ
ケース用アルミニウム合金板とした。前記脱脂には日本
パーカライジング社（株）製のファインクリーナー364S
を用いた。下地処理は表２に示すいずれかの方法により
行った。有機樹脂皮膜には表３に示す有機樹脂を用い
た。有機樹脂皮膜は、塗装法またはラミネート法により
形成した。骨材を含有させた有機樹脂は、形成する有機
樹脂皮膜の厚さにより有機樹脂皮膜表面の粗度が左右さ
れる。なお、一部下地処理を施さないものも含めた。
得られたアルミニウム合金板からサンプルを切出し、成
形加工性と、耐アウトガス性を下記方法により調べた。
比較のため、本発明の条件を外れるものについても同様
の調査を行った。結果を表４〜６に示す。 （１）成形加工性 サンプルの有機樹脂皮膜面に揮発性潤滑油（日本工作油
製Ｇ−6281）を塗布し有機樹脂皮膜面が外側になるよう
に33mmφの円筒状に深絞り成形し、限界絞り比(L.D.R.)
を求めた。限界絞り比(L.D.R.)が2.10以上のものを◎、
2.10未満, 1.90以上のものを○、1.90未満のものを×で
示した。 （２）耐アウトガス性 有機樹脂皮膜を形成しない面（ケース内面となる面）の
耐アウトガス性を調べた。調査方法は、サンプルの有機
樹脂皮膜形成面をシールして、80℃に保持した密閉容器
内に24時間放置し、その後容器を室温に戻して、サンプ
ルから放出されたガスを容器内面に凝集させ、次いで容
器内面を溶剤（イソプロピレン）にて洗浄して前記凝集
ガスを溶剤に溶かし、この溶剤を濃縮してＦＴ−ＩＲ
（フーリエ変換赤外分光法）によりガス分析した。な
お、比較のため、有機樹脂皮膜をアルミニウム合金素板
の両面に形成したものについても試験したが、このもの
は一面のみをシールし、他面は有機樹脂皮膜が露出した
ままにした。The present invention will be described below in detail with reference to examples. (Example 1) Aluminum alloy plate (aluminum alloy base plate) having a thickness of 0.75 mm shown in Table 1 was sequentially degreased, washed with water, and ground-treated, and an organic resin film was formed thereon to form an aluminum alloy for a hard disk drive case. Board. Fine cleaner 364S manufactured by Nippon Parkerizing Co., Ltd. was used for the degreasing.
Was used. The base treatment was performed by any of the methods shown in Table 2. The organic resin shown in Table 3 was used for the organic resin film. The organic resin film was formed by a coating method or a lamination method. The roughness of the organic resin film surface of the organic resin containing the aggregate depends on the thickness of the organic resin film to be formed. In addition, some of which did not undergo the base treatment were also included.
A sample was cut out from the obtained aluminum alloy plate, and the formability and outgas resistance were examined by the following methods.
For the purpose of comparison, the same investigation was carried out for those deviating from the conditions of the present invention. The results are shown in Tables 4 to 6. (1) Formability The sample is coated with a volatile lubricating oil (G-6281 manufactured by Nippon Kogyo Oil Co., Ltd.) on the surface of the organic resin film, and deep-drawn into a 33 mmφ cylindrical shape so that the organic resin film surface is on the outside. Aperture ratio (LDR)
I asked. ◎, those with a limit drawing ratio (LDR) of 2.10 or more
Those with less than 2.10 and 1.90 or more were marked with ○, and those with less than 1.90 were marked with x. (2) Outgas resistance The outgas resistance of the surface on which the organic resin film was not formed (the surface serving as the inner surface of the case) was examined. The investigation method was to seal the surface of the sample on which the organic resin film was formed, leave it in a closed container kept at 80 ° C for 24 hours, and then return the container to room temperature to allow the gas released from the sample to aggregate on the inner surface of the container. Then, the inner surface of the container is washed with a solvent (isopropylene) to dissolve the agglomerated gas in the solvent.
(Fourier transform infrared spectroscopy) was used for gas analysis. For comparison, a test was also conducted on an aluminum alloy base plate having an organic resin film formed on both sides, but this was sealed on only one surface and the other surface was left with the organic resin film exposed.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【表２】 [Table 2]
【００２１】[0021]
【表３】 [Table 3]
【００２２】[0022]
【表４】 [Table 4]
【００２３】[0023]
【表５】 [Table 5]
【００２４】[0024]
【表６】 [Table 6]
【００２５】表４〜６より明らかなように、本発明例
（No.1〜19) は、いずれも、成形加工性および耐アウト
ガス性に優れている。これに対し、比較例のNo.20,21は
有機樹脂皮膜が形成されていないため成形加工時に破断
が生じた。 No.22はアルミニウム合金素板の耐力が低い
ため、 No.23はアルミニウム合金素板の伸びが低いた
め、いずれも成形加工性に劣った。 No.24は有機樹脂皮
膜が薄かったため成形時に樹脂皮膜が剥離し破断が生じ
た。 No.25は有機樹脂皮膜に骨材が含有されていなく表
面粗度が小さいため、 No.26は骨材の径に較べて皮膜厚
さが薄かったため表面粗度が大きくなりすぎて、いずれ
も十分な潤滑性が得られず、成形加工時に破断が生じ
た。 No.27は摩擦係数の大きい有機樹脂皮膜を用いたた
め成形加工時に破断が生じた。 No.28は有機樹脂皮膜を
両面に形成したため、ガスが多量に発生した。As is clear from Tables 4 to 6, all of the inventive examples (Nos. 1 to 19) are excellent in moldability and outgassing resistance. On the other hand, Nos. 20 and 21 of Comparative Examples did not have an organic resin film formed, and thus fractured during molding. No. 22 was inferior in formability because the yield strength of the aluminum alloy base plate was low and No. 23 was low in elongation of the aluminum alloy base plate. In No. 24, the organic resin film was thin, and the resin film peeled off during molding, causing breakage. No. 25 has no organic resin film containing aggregate and the surface roughness is small.No. 26 has too large surface roughness because the film thickness is thin compared to the diameter of the aggregate. Sufficient lubricity was not obtained, and breakage occurred during molding. No. 27 broke during molding due to the use of an organic resin film with a large coefficient of friction. In No. 28, a large amount of gas was generated because the organic resin film was formed on both sides.
【００２６】（実施例２） 実施例１で得られた本発明のアルミニウム合金板を、有
機樹脂皮膜を形成した面を外側にして、箱型に深絞り加
工し、これをＨＤＤカセットの外枠に用いた。長期間使
用したが、カセットの機能低下は全く認められなかっ
た。(Example 2) The aluminum alloy plate of the present invention obtained in Example 1 was deep drawn into a box shape with the surface on which the organic resin film was formed facing outward, and this was subjected to the outer frame of an HDD cassette. It was used for. After long-term use, no deterioration of the cassette function was observed.
【００２７】以上、アルミニウム合金板をＨＤＤカセッ
トのケースに用いた例について説明したが、本発明は、
アルミニウム合金板を、コンピュータやワードプロセッ
サなどの装置の構成部材に適用しても同様の効果が得ら
れるものである。Although an example in which an aluminum alloy plate is used for a case of an HDD cassette has been described above, the present invention
The same effect can be obtained by applying the aluminum alloy plate to a component of a device such as a computer or a word processor.
【００２８】[0028]
【発明の効果】以上に述べたように、本発明のアルミニ
ウム合金板は、機械的性質に優れたアルミニウム合金素
板を用いその片面に有機樹脂皮膜を６μｍ以上の厚さに
且つ所定の摩擦係数および表面粗度で形成されているの
で成形加工性に優れる。また前記有機樹脂皮膜形成面を
外側にして部品などを成形することにより、有機樹脂皮
膜から放出されるガスで部品などが汚染されることがな
くなり、部品または装置は長期間良好に機能する。As described above, the aluminum alloy plate of the present invention uses an aluminum alloy base plate excellent in mechanical properties, and has an organic resin film on one side having a thickness of 6 μm or more and a predetermined friction coefficient. Also, since it is formed with surface roughness, it is excellent in moldability. In addition, by molding a component or the like with the surface on which the organic resin film is formed facing outward, the component or the like does not become contaminated by gas released from the organic resin film, and the component or device functions well for a long period of time.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−104939（ＪＰ，Ａ) 特開 平４−108569（ＪＰ，Ａ) 特開 平８−276154（ＪＰ，Ａ) 特開 平５−228433（ＪＰ，Ａ) 特開 平８−266999（ＪＰ，Ａ) 特開 平４−330683（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 15/08 G11B 33/02,33/14 ────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-104939 (JP, A) JP-A-4-108569 (JP, A) JP-A-8-276154 (JP, A) JP-A-5-105 228433 (JP, A) JP-A-8-266999 (JP, A) JP-A-4-330683 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B32B 15/08 G11B 33 / 02,33 / 14
Claims (8)
ＭＰａ以上、伸びが１０％以上のアルミニウム合金素板
の片面に、摩擦係数が０．３以下、表面粗度Ｒａが１．
０〜３０μｍの有機樹脂皮膜が６μｍ以上の厚さに形成
されていることを特徴とするハードディスクドライブケ
ース用アルミニウム合金板。1. A tensile strength of at least 75 MPa and a proof stress of 25.
MPa or more, elongation on one side of 10% or more of aluminum alloy material plate, the friction coefficient of 0.3 or less, the surface roughness Ra is 1.
A hard disk drive having an organic resin film of 0 to 30 [mu] m in a thickness of 6 [mu] m or more.
Over scan for the aluminum alloy plate.
成され、その上に有機樹脂皮膜が形成されていることを
特徴とする請求項１記載のハードディスクドライブケー
ス用アルミニウム合金板。2. The hard disk drive casing according to claim 1, wherein a base film is formed on the aluminum alloy base plate, and an organic resin film is formed thereon.
Scan for the aluminum alloy plate.
記潤滑剤がワックス、フッ素樹脂、または無機潤滑剤の
うちの少なくとも１種であることを特徴とする請求項１
または２記載のハードディスクドライブケース用アルミ
ニウム合金板。3. The organic resin film according to claim 1, wherein a lubricant is contained in the organic resin film, and the lubricant is at least one of a wax, a fluororesin, and an inorganic lubricant.
Or aluminum for hard disk drive case described in 2
Alloy plate.
り大きい径の骨材が含有されていることを特徴とする請
求項１、２、３のいずれかに記載のハードディスクドラ
イブケース用アルミニウム合金板。4. The hard disk drive according to claim 1, wherein the organic resin film contains an aggregate having a diameter larger than the thickness of the organic resin film.
Aluminum alloy plate for Eve case .
骨材の少なくとも１種であることを特徴とする請求項４
記載のハードディスクドライブケース用アルミニウム合
金板。5. The aggregate according to claim 4, wherein the aggregate is at least one of a nylon-based aggregate and an acrylic-based aggregate.
The aluminum alloy for the hard disk drive case described
Sheet metal .
テル系樹脂、エチレン系樹脂、エポキシ系樹脂、フェノ
ール系樹脂、フッ素系樹脂、またはポリアミド系樹脂の
うちの少なくとも１種から構成されていることを特徴と
する請求項１、２、３、４、５のいずれかに記載のハー
ドディスクドライブケース用アルミニウム合金板。6. The organic resin film is composed of at least one of an acrylic resin, an ester resin, an ethylene resin, an epoxy resin, a phenol resin, a fluorine resin, and a polyamide resin. Ha according to any one of claims 1, 2, 3, 4, characterized in
Aluminum alloy plate for hard disk drive case .
かに記載のアルミニウム合金板が成形加工され、有機樹
脂皮膜形成面を外側にして用いられていることを特徴と
するハードディスクドライブケース。7. The aluminum alloy sheet according to claim 1, wherein the aluminum alloy sheet is formed and used, with the surface on which the organic resin film is formed facing outward. Hard disk drive case .
かに記載のアルミニウム合金板が成形加工され、有機樹
脂皮膜形成面を外側にして用いられていることを特徴と
するハードディスクドライブ装置。8. The aluminum alloy sheet according to claim 1, wherein the aluminum alloy sheet is formed and used, with the surface on which the organic resin film is formed facing outward. Hard disk drive device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19392697A JP3234541B2 (en) | 1997-01-13 | 1997-07-18 | Aluminum alloy plate for hard disk drive case and hard disk drive case or hard disk drive device using said aluminum alloy plate |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9-3774 | 1997-01-13 | ||
| JP377497 | 1997-01-13 | ||
| JP19392697A JP3234541B2 (en) | 1997-01-13 | 1997-07-18 | Aluminum alloy plate for hard disk drive case and hard disk drive case or hard disk drive device using said aluminum alloy plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10249994A JPH10249994A (en) | 1998-09-22 |
| JP3234541B2 true JP3234541B2 (en) | 2001-12-04 |
Family
ID=26337415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19392697A Expired - Fee Related JP3234541B2 (en) | 1997-01-13 | 1997-07-18 | Aluminum alloy plate for hard disk drive case and hard disk drive case or hard disk drive device using said aluminum alloy plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3234541B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7507297B2 (en) | 2002-05-20 | 2009-03-24 | Panasonic Corporation | Cleaning method and cleaning apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4012784B2 (en) * | 2001-11-22 | 2007-11-21 | 古河スカイ株式会社 | Method for producing pre-coated Al alloy plate, pre-coated Al alloy plate produced by the method and rich in design and bending workability, housing using the pre-coated Al alloy plate, and measuring instrument using the housing |
-
1997
- 1997-07-18 JP JP19392697A patent/JP3234541B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7507297B2 (en) | 2002-05-20 | 2009-03-24 | Panasonic Corporation | Cleaning method and cleaning apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10249994A (en) | 1998-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100952884B1 (en) | Pre-coated Metal Sheet for Slot-in Drive Cases | |
| JP3234541B2 (en) | Aluminum alloy plate for hard disk drive case and hard disk drive case or hard disk drive device using said aluminum alloy plate | |
| JP4134237B2 (en) | Pre-coated metal plate | |
| JP2006312243A (en) | Precoated aluminum alloy plate excellent in radiation properties, scratch resistance and conductivity | |
| US4861647A (en) | Precoating metal sheet for two-piece can | |
| CN1228188A (en) | Plain carbon steel shutter for removable data storage devices | |
| JP2010005545A (en) | Precoated metallic plate for electronic/electrical equipment | |
| JP3875985B2 (en) | Scratch resistant pre-coated metal plate | |
| Murakawa et al. | Tribological behavior of amorphous hard carbon films against zinc-plated steel sheets | |
| KR101009869B1 (en) | Precoated metal plate | |
| US6086992A (en) | Resin-coated aluminum alloy plate material | |
| JP4722422B2 (en) | Surface treatment aluminum material and heat exchanger | |
| KR20080052604A (en) | Method for production of magnesium alloy molding-processed article, and magnesium alloy molding-processed article | |
| JP2003183587A (en) | Composition for lubricating film and metal plate excellent in lubricity using the same | |
| JP2005262841A (en) | Resin coated aluminum material excellent in processability and heat radiation | |
| JPH032257A (en) | Composition capable of forming lubricant coating film | |
| JP4638538B2 (en) | Pre-coated aluminum plate | |
| JPH1052881A (en) | Resin coated metal plate with mold drag resistance and corrosion resistance and its manufacture | |
| JP2000067571A (en) | Resin coated aluminum material for hard disk drive case, hard disk drive case using the same and hard disk drive device using the same | |
| JP3499733B2 (en) | Aluminum material for disk shutter | |
| JP2854262B2 (en) | Aluminum alloy plate with excellent lubricity | |
| JPH09218405A (en) | Resin coated metallic plate for back light panel of liquid crystal display device | |
| JP3202449B2 (en) | Pre-coated steel sheet for heavy shutter | |
| JP3696719B2 (en) | Resin-coated aluminum material for hard disk drive case, hard disk drive case using the resin-coated aluminum material, and hard disk drive device using the same | |
| JP2001322203A (en) | Resin-coated metal panel excellent in cleaning properties, hdd case using the same, and hdd apparatus using hdd case |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070921 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080921 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080921 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090921 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100921 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100921 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130921 Year of fee payment: 12 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |