JP2002222577A - Manufacturing method for lubricant impregnated material for magnetic disk device and magnetic disk device - Google Patents
Manufacturing method for lubricant impregnated material for magnetic disk device and magnetic disk deviceInfo
- Publication number
- JP2002222577A JP2002222577A JP2001017822A JP2001017822A JP2002222577A JP 2002222577 A JP2002222577 A JP 2002222577A JP 2001017822 A JP2001017822 A JP 2001017822A JP 2001017822 A JP2001017822 A JP 2001017822A JP 2002222577 A JP2002222577 A JP 2002222577A
- Authority
- JP
- Japan
- Prior art keywords
- lubricant
- magnetic disk
- disk device
- impregnated material
- solution
- 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.)
- Granted
Links
Landscapes
- Lubricants (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は磁気ディスク装置に
置いて潤滑剤を塵埃除去フィルターなどの潤滑剤含浸部
材より円板やヘッドディスクインターフェースへガスで
供給する潤滑剤供給ＨＤＩ方式における潤滑剤含浸材に
潤滑剤を含浸させる製造方法および該方法を用いて製造
した潤滑剤含浸材を組み込んだ磁気ディスク装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricant impregnating material in an HDI system in which a lubricant is supplied from a lubricant impregnating member such as a dust removing filter to a disk or a head disk interface in a magnetic disk drive. The present invention relates to a manufacturing method of impregnating a lubricant with a lubricant and a magnetic disk drive incorporating a lubricant impregnated material manufactured by using the manufacturing method.
【０００２】[0002]
【従来の技術】磁気ディスク装置内に潤滑剤をガスとし
て供給する技術は特開昭59-215657に記載のようにヘッ
ドディスクアセンブリ内に潤滑剤含浸材を配置したもの
であった。潤滑剤は円板の回転により生ずる熱気流によ
り気化し円板面に供給されるものである。しかしなが
ら、潤滑剤含浸材は明らかに高温の空気流にさらされる
ために気化するものばかりではなく潤滑剤がミストとし
てヘッド・円板・インターフェースへ供給され、ヘッド
の浮上性を損ねる。そのような磁気ディスク装置ではヘ
ッドが安定して浮上しないためデータの読み込み・書き
込みに間違いを生ずる場合がある。2. Description of the Related Art As a technique for supplying a lubricant as a gas into a magnetic disk device, a lubricant impregnating material is disposed in a head disk assembly as described in Japanese Patent Application Laid-Open No. 59-215657. The lubricant is vaporized by a hot air flow generated by rotation of the disk and supplied to the disk surface. However, since the lubricant impregnated material is obviously vaporized due to exposure to a high-temperature air flow, the lubricant is supplied to the head / disc / interface as a mist, which impairs the flying ability of the head. In such a magnetic disk device, since the head does not fly stably, an error may occur in reading / writing data.
【０００３】[0003]
【発明が解決しようとする課題】本発明は潤滑剤含浸材
が空気流れにさらされたとしても潤滑剤がミストとして
飛散することを無くすことが可能な潤滑剤含浸材の製造
方法および潤滑剤のミスト飛散が無い磁気ディスク装置
を提供することである。SUMMARY OF THE INVENTION The present invention relates to a method of manufacturing a lubricant impregnated material capable of preventing the lubricant from being scattered as a mist even when the lubricant impregnated material is exposed to an air flow. An object of the present invention is to provide a magnetic disk device free from mist scattering.
【０００４】[0004]
【課題を解決するための手段】潤滑剤をミストで飛散し
にくくするには、含浸材に潤滑剤を滴下含浸させる際の
潤滑溶液の濃度を25％以下かつ含浸溶液量を20mm3以下
とすることで達成できる。また、含浸部材を濃度が5％
以下の潤滑溶液に浸漬含浸させることで達成できる。ま
たこの方法を用いて潤滑剤含浸材を製造し、磁気ディス
ク装置へ組み込むことで信頼性の高い磁気ディスク装置
となる。含浸させる潤滑剤の量は濃度と溶液の量で決定
されるが、潤滑剤の量が少なすぎると潤滑剤を含浸させ
た効果が無くなる。そこで潤滑剤の量が0.5mg以上とな
るように濃度と量を上記の範囲内で制御することが好ま
しい。In order to make it difficult for the lubricant to be scattered by the mist, the concentration of the lubricating solution at the time of impregnating the impregnating material with the lubricant is 25% or less and the amount of the impregnating solution is 20 mm 3 or less. Can be achieved by Also, the concentration of impregnated members is 5%.
This can be achieved by immersion impregnation in the following lubricating solution. In addition, a lubricant-impregnated material is manufactured by using this method, and is incorporated into a magnetic disk device, whereby a highly reliable magnetic disk device can be obtained. The amount of the lubricant to be impregnated is determined by the concentration and the amount of the solution. If the amount of the lubricant is too small, the effect of the impregnation with the lubricant is lost. Therefore, it is preferable to control the concentration and amount within the above range so that the amount of the lubricant is 0.5 mg or more.
【０００５】また、塵埃除去用のフィルターは円板の極
近傍に置かれており空気流の影響を強く受けるが、本発
明の製造方法を用いることで塵埃除去用のフィルターを
潤滑剤含浸材としても潤滑剤ミストの発生が無く高信頼
性の磁気ディスク装置とすることが出来る。潤滑剤含浸
材に含浸させる潤滑剤としては両末端が水酸基のパーフ
ルオロポリエーテル潤滑剤が好ましく、その分子量は１
５００〜２５００がさらに好ましい。[0005] Further, the dust removing filter is located very close to the disk and is strongly affected by the air flow. However, by using the manufacturing method of the present invention, the dust removing filter can be used as a lubricant impregnated material. Also, a highly reliable magnetic disk device can be provided without generating lubricant mist. As the lubricant to be impregnated into the lubricant impregnated material, a perfluoropolyether lubricant having hydroxyl groups at both ends is preferable, and its molecular weight is 1
500 to 2500 are more preferred.
【０００６】[0006]
【発明の実施の形態】以下、実施例を基に本発明を説明
する。まず、潤滑剤を含浸させるための部材は塵埃除去
フィルターを用いた。潤滑剤は両末端に水酸基を有する
パーフルオロポリエーテル潤滑剤であり、その数平均分
子量は約２０００である。潤滑剤の溶媒として３Ｍ社製
ノベックHFE7100を用いた。実施例に用いた磁気ディス
ク装置のフィルター位置を図１に示す。フィルター１は
磁気ディスク２の近傍に置かれスピンドルモータ３の回
転により空気流れにさらされる。この実施例ではスピン
ドルモータの回転数は４２００min-1であるが、さらに
大きな回転数で含浸材の位置が異なった場合に置いても
空気流れが作用するならば、本発明は同じ効果を得ると
推定される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on examples. First, a dust removal filter was used as a member for impregnating the lubricant. The lubricant is a perfluoropolyether lubricant having hydroxyl groups at both terminals, and has a number average molecular weight of about 2,000. Novec HFE7100 manufactured by 3M was used as a solvent for the lubricant. FIG. 1 shows a filter position of the magnetic disk drive used in the embodiment. The filter 1 is placed near the magnetic disk 2 and is exposed to the air flow by the rotation of the spindle motor 3. In this embodiment, the rotation speed of the spindle motor is 4200 min-1, but if the air flow acts even when the impregnating material is placed at a different rotation speed at a higher rotation speed, the present invention can achieve the same effect. Presumed.
【０００７】潤滑剤を溶媒に溶かし、種々の濃度の溶液
とした。この時潤滑剤によるフィルターの重量変化は,
例えば１０％溶液で10mm3滴下した場合、13.4mgから14.
9mgに変化した。溶液の密度は約１.5mg/mm3である。次
に潤滑剤がミストで飛散するかどうかを測定するため
に、図２に示すように潤滑剤をマイクロピペットで計量
して滴下したフィルターを５分放置し、溶媒を蒸発させ
た後、ダストカウンタで吸引しダストカウントした。[0007] Lubricants were dissolved in a solvent to give solutions of various concentrations. At this time, the weight change of the filter due to the lubricant is
For example, when dropping 10 mm 3 with a 10% solution, 13.4 mg to 14.
Changed to 9 mg. Density of the solution is about 1.5 mg / mm 3. Next, in order to determine whether the lubricant is scattered by the mist, as shown in FIG. 2, the filter in which the lubricant was measured and dropped by a micropipette was left for 5 minutes, and the solvent was evaporated. And dust was counted.
【０００８】この際の吸引量は0.027m3/min（1ft3/mi
n）である。吸引量が大きくなるほどダストカウントは
増加するために上記の吸引量に固定して測定を行った。
まず最初に潤滑剤溶液の濃度をパラメータにしてダスト
測定を行った。潤滑剤溶液の滴下量は10mm3である。そ
の結果を図３に示す。At this time, the suction amount is 0.027 m 3 / min (1 ft 3 / mi
n). Since the dust count increases as the suction amount increases, the measurement was performed with the suction amount fixed at the above-described suction amount.
First, dust measurement was performed using the concentration of the lubricant solution as a parameter. The drop amount of the lubricant solution is 10 mm 3 . The result is shown in FIG.
【０００９】潤滑剤の濃度の増加に伴いダスト発生数が
増加しており、25%以上の濃度ではダストカウントが急
増しており、潤滑剤のミスト飛散が大きくなっているこ
とが判る。次に濃度を10%に固定して滴下量をパラメー
タとしてダストカウントを行った。その結果を図４に示
す。It can be seen that the number of generated dust increases with an increase in the concentration of the lubricant. At a concentration of 25% or more, the dust count sharply increases, and it can be seen that the scattering of the lubricant mist increases. Next, the concentration was fixed at 10%, and a dust count was performed using the amount of dripping as a parameter. FIG. 4 shows the results.
【００１０】滴下量の増加に伴いダストカウントは増加
しており、滴下量も少ない法が良好である。図３，４の
結果からダストカウントを低減するためには少なくとも
潤滑溶液の濃度を25％以下とし、滴下量を20mm3以下と
することが望ましいこと判る。さらに５％濃度の潤滑剤
溶液にフィルターを浸漬させ潤滑剤を含浸させたフィル
ターをダストカウントすると40000〜80000個/分のダス
トカウントが測定され、浸漬含浸で潤滑剤を含浸させる
ことでもミスト発生を低減できることが判った。The dust count increases with an increase in the amount of dripping, and a method in which the amount of dripping is small is preferable. From the results of FIGS. 3 and 4, it can be seen that it is desirable that the concentration of the lubricating solution be at least 25% or less and the drop amount be 20 mm 3 or less in order to reduce the dust count. Furthermore, when the filter is immersed in a 5% concentration lubricant solution and the filter impregnated with the lubricant is dust-counted, the dust count is measured at 40,000 to 80,000 / min. It was found that it could be reduced.
【００１１】また、この結果より濃度20％で20mm3の滴
下を行ったフィルターを磁気ディスク装置に組み込み６
５℃で２０００時間ランダムなシークを行いデータの書
き込み・読み出しを常時行ったが書き込み・読み出しの
エラーは発生せず、高信頼性を有する磁気ディスク措置
であることが判った。According to the results, a filter having a concentration of 20% and a drop of 20 mm 3 was dropped into a magnetic disk drive.
Random seek was performed at 5 ° C. for 2000 hours to write and read data at all times. However, no writing / reading error occurred, and it was found that this was a highly reliable magnetic disk measure.
【００１２】[0012]
【発明の効果】潤滑剤ミストの発生の少ない潤滑剤含浸
材を製造することが出来る。またその潤滑剤含浸材を磁
気ディスク装置に組み込むことにより信頼性の高い磁気
ディスク装置とすることが出来る。According to the present invention, a lubricant impregnated material with less generation of lubricant mist can be manufactured. By incorporating the lubricant impregnated material into the magnetic disk device, a highly reliable magnetic disk device can be obtained.
【図１】磁気ディスク装置内のフィルターの位置を示す
概略図である。FIG. 1 is a schematic diagram showing a position of a filter in a magnetic disk drive.
【図２】潤滑剤のミストを計測する実験方法を示す図で
ある。FIG. 2 is a diagram showing an experimental method for measuring a mist of a lubricant.
【図３】濃度を変化させたときのダストカウントを示す
図である。FIG. 3 is a diagram showing a dust count when the density is changed.
【図４】滴下量を変化させたときのダストカウントを示
す図である。FIG. 4 is a diagram illustrating a dust count when a drop amount is changed.
1…フィルター、2…磁気ディスク、3…スピンドルモー
タ、4…潤滑溶液滴下領域、5…ダストカウンタ吸引口。1 ... Filter, 2 ... Magnetic disk, 3 ... Spindle motor, 4 ... Lubricant solution dropping area, 5 ... Dust counter suction port.
フロントページの続き (72)発明者 井上 友次 神奈川県小田原市国府津2880番地 株式会 社日立製作所ストレージシステム事業部内 Ｆターム(参考） 4H104 CD04A PA16 Continued on the front page (72) Inventor Tomoji Inoue 2880 Kozu, Odawara-shi, Kanagawa F-term in Hitachi, Ltd. Storage System Division (Reference) 4H104 CD04A PA16
Claims (5)
する潤滑剤含浸材の製造方法において、上記潤滑剤含浸
材へ潤滑剤を滴下含浸させる際の潤滑剤の溶液濃度が25
％以下であり、該溶液の体積が２０mm3以下であること
を特徴とする磁気ディスク装置用潤滑剤含浸材の製造方
法。In a method of manufacturing a lubricant impregnated material for supplying a lubricant into a magnetic disk drive by gas, the lubricant impregnated with the lubricant has a solution concentration of 25 when the lubricant is impregnated with the lubricant.
% Or less, and the volume of the solution is 20 mm 3 or less.
する潤滑剤含浸材の製造方法において、上記潤滑剤含浸
材へ潤滑剤を含浸させる際に該潤滑剤濃度が5%以下の潤
滑剤溶液に含浸部材を浸漬含浸させることを特徴とする
磁気ディスク装置用潤滑剤含浸材の製造方法。2. A method for producing a lubricant impregnated material for supplying a lubricant into a magnetic disk drive by gas, wherein the lubricant impregnated with the lubricant has a lubricant concentration of 5% or less. A method for producing a lubricant impregnated material for a magnetic disk device, comprising immersing and impregnating a solution with an impregnating member.
りなることを特徴とする請求項１または2に記載の磁気
ディスク装置用潤滑剤含浸材の製造方法。3. The method for producing a lubricant impregnated material for a magnetic disk drive according to claim 1, wherein the lubricant impregnated material is formed of a dust removal filter.
有するパーフルオロポリエーテルであることを特徴とす
る請求項１または2に記載の磁気ディスク装置用潤滑剤
含浸材の製造方法。4. The method for producing a lubricant impregnated material for a magnetic disk drive according to claim 1, wherein the lubricant to be impregnated is perfluoropolyether having hydroxyl groups at both ends.
スク装置用潤滑剤含浸材の製造方法を用いて製造した潤
滑剤含浸材を組み込んだ磁気ディスク装置。5. A magnetic disk drive incorporating a lubricant impregnated material produced using the method for producing a lubricant impregnated material for a magnetic disk device according to claim 1, 2, 3 or 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001017822A JP4185669B2 (en) | 2001-01-26 | 2001-01-26 | Method for manufacturing lubricant-impregnated material for magnetic disk device and magnetic disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001017822A JP4185669B2 (en) | 2001-01-26 | 2001-01-26 | Method for manufacturing lubricant-impregnated material for magnetic disk device and magnetic disk device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002222577A true JP2002222577A (en) | 2002-08-09 |
| JP4185669B2 JP4185669B2 (en) | 2008-11-26 |
Family
ID=18883939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001017822A Expired - Fee Related JP4185669B2 (en) | 2001-01-26 | 2001-01-26 | Method for manufacturing lubricant-impregnated material for magnetic disk device and magnetic disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4185669B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8300354B2 (en) | 2009-12-23 | 2012-10-30 | Hitachi Global Storage Technologies Netherlands B.V. | Hard disk drives using a bi-product of manufacturing a ZTMD lubricant to trap sub-micrometer particles |
-
2001
- 2001-01-26 JP JP2001017822A patent/JP4185669B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8300354B2 (en) | 2009-12-23 | 2012-10-30 | Hitachi Global Storage Technologies Netherlands B.V. | Hard disk drives using a bi-product of manufacturing a ZTMD lubricant to trap sub-micrometer particles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4185669B2 (en) | 2008-11-26 |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| LAPS | Cancellation because of no payment of annual fees |