JPH0344249B2 - - Google Patents
Info
- Publication number
- JPH0344249B2 JPH0344249B2 JP58055445A JP5544583A JPH0344249B2 JP H0344249 B2 JPH0344249 B2 JP H0344249B2 JP 58055445 A JP58055445 A JP 58055445A JP 5544583 A JP5544583 A JP 5544583A JP H0344249 B2 JPH0344249 B2 JP H0344249B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- layer
- alloy
- thickness
- recording medium
- 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 - Lifetime
Links
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 3
- 229910008329 Si-V Inorganic materials 0.000 claims description 2
- 229910006768 Si—V Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229910017061 Fe Co Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 20
- 238000007747 plating Methods 0.000 description 11
- 229910001096 P alloy Inorganic materials 0.000 description 7
- 229910018104 Ni-P Inorganic materials 0.000 description 6
- 229910018536 Ni—P Inorganic materials 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
- G01D15/34—Recording surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
本発明は磁気スケールに係わる。
従来の磁気スケールは記録媒体の酸化等による
磁気特性の劣化を避けるため、記媒体上に汚れが
付着しないように箱型の容器で覆つたりしてい
た。しかしながら湿気等の影響は避けられず、充
分管理された環境で使用することが必要である。
最近、磁気スケールの応用が広がり、悪環境で
磁気特性の劣化が生じない磁気スケールの要請が
強まつている。
本発明の目的は上記欠点を解決し、悪環境でも
記録媒体は酸化することなく、良好な磁気特性を
保持することのできる磁気スケールを提供するも
のである。
本発明は、非磁性基体の側面の長手方向に沿つ
て形成された溝に記録媒体として、磁気的に硬い
Fe−Co−Mn−Ｃ−Si−Ｖ係合金の磁性金属線材
が埋込まれている構造磁気スケールであつて、そ
の表面の前記記録媒を含む一部あるいは全面に第
１層として厚さが0.7μｍ以上から2μｍを越えない
Znを形成し、該Zn層上に第２層として厚さが1μ
ｍ以上から1.5μｍを越えない非磁性Ni−Ｐの合
金の層が形成されていることを特徴とする磁気ス
ケールが得られる。
本発明の要点の１つは磁気スケールの記録媒体
が酸化し、磁気特性の劣化および磁束分布の不均
一が起ることを防止することにある。従つて、耐
食性が優れている金属あるいは合金が用いられな
ければならないが、その金属あるいは合金が磁性
を示すものであつては、記録媒体から湧き出る磁
束が空間に分布しなくなるため、非磁性体である
ことが必要である。具体的にはZnあるいは非磁
性Ni−Ｐ合金が望ましい。
本発明の要点の他の１つは、センサが接触する
場合は当然摩擦が起るが、非接触式の場合でも、
センサと記録媒体の間隔を安定して一定に保つた
めには、センサ保持台が磁気スケールと接触して
いることが望ましく、この場合も摩擦が問題とな
るため、耐摩耗性に優れた金属あるいは合金を用
いることが必要である。具体的には非磁性のNi
−Ｐ合金が望ましい。
金属あるいは合金層の形成は、基体にステンレ
スを使用する場合は磁気スケールの外周面の記録
媒体に含む一部あるいは全面のどちらでもかまわ
ない。
本発明の磁気スケールの外周面に第１層として
厚さが0.7μｍ以上から2μｍを越えないZnを形成
し、その外側に第２層として厚さが1μｍ以上か
ら1.5μｍを越えない非磁性Ni−Ｐ合金を形成す
ることによつて全体として被膜層の厚さを薄くす
ることができた。第１層として厚さが0.7μｍを下
回るZnおよび第２層として厚さが1μｍを下回る
Ni−Ｐを形成しても本発明の効果は得られない。
また、第１層として厚さが2μｍを上回るZnおよ
び第２層として厚さが1.5μｍを上回るNi−Ｐを
形成すると被膜層が厚くなり、本発明の目的が達
成されない。第１層としてのZnメツキおよび第
２層としての非磁性Ni−Ｐ合金メツキは以下の
工程で行なつた。
（Znメツキ）
脱脂→酸洗→脱脂→中和→
Znメツキ
（非磁性Ni−Ｐ合金メツキ）
脱脂→酸洗→水洗→メツキ液に浸漬→
水洗→乾燥
上記工程でZnおよび非磁性Ni−Ｐ合金メツキ
を施したところ、耐食性の良好な磁気スケールが
得られた。
次に本発明の磁気スケールについて実施例によ
つて説明する。
上記磁気スケールは第１表に示すようなメツキ
条件および金属（Zn）および合金（Ni−Ｐ）層
厚さになるように耐食性合金層を形成した。
直径６mm、長さ1000mmのSUS303材の丸棒に巾
0.5mm、深さ0.5mmの溝を一直線に掘つた。その溝
に直径0.5mmの重量比で38.025％Co−19.512％Mn
−0.585％Ｃ−1.366％Si−0.488％Ｖ−残りFeから
成る冷間伸線加工された合金線材を埋込み、スエ
ージ加工を施して直径59.7mmの複合体とした。そ
の複合体を450℃で30分間、水素雰囲気中で熱処
理した。熱処理された複合体は、溝の部分を上方
に向けて固定され、液体冷却しながら精密研削用
グラインダーで線材埋込み面を平面に研削した。
埋込まれた磁性金属線材は、溝から遊離すること
なく、良好な磁性材料の平面が得られた。
以上の方法で得られた磁気スケールについて第
１表に示すような６種類の試料を作製した。非磁
性Ni−Ｐ合金メツキには無電解ニツケルメツキ
液としてカニゼンシユーマメツキ液（商品名）を
用いた。
The present invention relates to magnetic scales. In order to avoid deterioration of magnetic properties due to oxidation of the recording medium, conventional magnetic scales are covered with a box-shaped container to prevent dirt from adhering to the recording medium. However, the influence of humidity and the like cannot be avoided, and it is necessary to use it in a well-controlled environment. Recently, the applications of magnetic scales have expanded, and the demand for magnetic scales that do not deteriorate in magnetic properties in adverse environments is increasing. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and provide a magnetic scale that can maintain good magnetic properties without oxidizing the recording medium even in adverse environments. The present invention provides a magnetically hard magnetic recording medium for use as a recording medium in a groove formed along the longitudinal direction of the side surface of a non-magnetic substrate.
A structural magnetic scale in which a magnetic metal wire of a Fe-Co-Mn-C-Si-V alloy is embedded, and a first layer is formed on a part or the entire surface of the scale including the recording medium. From 0.7μm or more to no more than 2μm
Zn is formed, and a second layer with a thickness of 1 μm is formed on the Zn layer.
A magnetic scale is obtained which is characterized in that a layer of a non-magnetic Ni--P alloy is formed with a thickness of from more than m to no more than 1.5 μm. One of the points of the present invention is to prevent the magnetic scale recording medium from being oxidized, resulting in deterioration of magnetic properties and non-uniform magnetic flux distribution. Therefore, a metal or alloy with excellent corrosion resistance must be used, but if the metal or alloy exhibits magnetism, the magnetic flux gushing out from the recording medium will not be distributed in space, so a non-magnetic material must be used. It is necessary that there be. Specifically, Zn or a nonmagnetic Ni-P alloy is desirable. Another point of the present invention is that friction naturally occurs when the sensors are in contact, but even in the case of a non-contact type, friction occurs.
In order to keep the distance between the sensor and the recording medium stable and constant, it is desirable that the sensor holder is in contact with the magnetic scale.Friction is also a problem in this case, so it is recommended to use a metal with excellent wear resistance or It is necessary to use an alloy. Specifically, non-magnetic Ni
-P alloy is preferred. When stainless steel is used as the substrate, the metal or alloy layer may be formed either on a part of the recording medium on the outer peripheral surface of the magnetic scale or on the entire surface. A first layer of Zn with a thickness of 0.7 μm or more and not exceeding 2 μm is formed on the outer peripheral surface of the magnetic scale of the present invention, and a non-magnetic Ni layer with a thickness of 1 μm or more and not exceeding 1.5 μm is formed on the outside as a second layer. By forming the -P alloy, the overall thickness of the coating layer could be reduced. Zn with a thickness less than 0.7μm as the first layer and less than 1μm thickness as the second layer
Even if Ni--P is formed, the effects of the present invention cannot be obtained.
Furthermore, if Zn is formed as the first layer with a thickness exceeding 2 μm and Ni-P is formed as the second layer with a thickness exceeding 1.5 μm, the coating layer becomes thick and the object of the present invention cannot be achieved. Zn plating as the first layer and nonmagnetic Ni--P alloy plating as the second layer were performed in the following steps. (Zn plating) Degreasing → Pickling → Degreasing → Neutralization →
Zn plating (non-magnetic Ni-P alloy plating) Degreasing → Pickling → Water washing → Soaking in plating solution →
Water washing→drying When Zn and non-magnetic Ni-P alloy plating was applied in the above process, a magnetic scale with good corrosion resistance was obtained. Next, the magnetic scale of the present invention will be explained using examples. For the above magnetic scale, a corrosion-resistant alloy layer was formed so that the plating conditions and metal (Zn) and alloy (Ni-P) layer thicknesses were as shown in Table 1. A round bar made of SUS303 material with a diameter of 6 mm and a length of 1000 mm.
A trench of 0.5 mm and depth was dug in a straight line. The groove has a diameter of 0.5mm and a weight ratio of 38.025%Co−19.512%Mn.
A cold-drawn alloy wire consisting of -0.585% C, 1.366% Si, 0.488% V, and the remainder Fe was embedded and swaged to form a composite with a diameter of 59.7 mm. The composite was heat treated at 450°C for 30 minutes in a hydrogen atmosphere. The heat-treated composite was fixed with the groove portion facing upward, and the wire embedded surface was ground into a flat surface using a precision grinder while being cooled with liquid.
The embedded magnetic metal wire did not come loose from the groove, and a good flat surface of the magnetic material was obtained. Six types of samples as shown in Table 1 were prepared for the magnetic scale obtained by the above method. For plating the non-magnetic Ni--P alloy, Kanizen Shuma plating solution (trade name) was used as an electroless nickel plating solution.
【表】
第１表のような耐食性合金層を形成した６種類
の磁気スケールは85℃−100％湿度の環境で試験
を行つたところ第２表のに示す結果となつた。
尚、第２表のNo.７は第１表のNo.１でNi−Ｐ合
金の形成厚さを3μｍとし、Zn層は形成しなかつ
たものである。第２表のNo.８は第１表のNo.４で
Znの形成厚さを2μｍとし、Ni−Ｐ合金層は形成
しなかつたものである。第２表のNo.９は第１表の
No.５でNi−Ｐ合金の形成厚さを4μｍとし、Zn層
は形成しなかつたものである。[Table] Six types of magnetic scales with corrosion-resistant alloy layers as shown in Table 1 were tested in an environment of 85°C and 100% humidity, and the results shown in Table 2 were obtained. Incidentally, No. 7 in Table 2 is the same as No. 1 in Table 1 except that the thickness of the Ni--P alloy was 3 μm and no Zn layer was formed. No. 8 in Table 2 is No. 4 in Table 1.
The thickness of Zn was 2 μm, and no Ni-P alloy layer was formed. No.9 in Table 2 is in Table 1.
In No. 5, the Ni--P alloy was formed to a thickness of 4 μm, and no Zn layer was formed.
【表】
○：記録媒体部が酸化しなかつた。
×：記録媒体部が酸化した。
以上のように、本発明の耐食性磁気スケールお
よびその製造方法は磁気スケールの応用範囲が広
がり、しかも悪環境での用途が広がる最近の状況
で、その工業的価値が大きい。[Table] ○: The recording medium portion was not oxidized.
×: The recording medium portion was oxidized.
As described above, the corrosion-resistant magnetic scale of the present invention and its manufacturing method have great industrial value in the recent situation where the range of application of magnetic scales is expanding and moreover, the use in adverse environments is expanding.
Claims (1)
れた溝に、記録媒体として磁気的に硬いFe−Co
−Mn−Ｃ−Si−Ｖ系合金の磁性金属線材が埋め
込まれている構造の磁気スケールであつて、その
表面の前記磁性金属記録媒体を含む一部あるいは
全面に第１層として厚さが0.7μｍ以上から2μｍを
越えないZnを形成し、該Zn層上に第２層として
厚さが1μｍ以上から1.5μｍを越えない非磁性Ni
−Ｐの合金の層が形成されていることを特徴とす
る磁気スケール。1 A magnetically hard Fe-Co material is used as a recording medium in a groove formed along the longitudinal direction of the side surface of a non-magnetic substrate.
- A magnetic scale having a structure in which a magnetic metal wire of a Mn-C-Si-V alloy is embedded, and a first layer with a thickness of 0.7 mm is formed on a part or the entire surface of the scale including the magnetic metal recording medium. Zn with a thickness of 1 μm or more and not exceeding 2 μm is formed on the Zn layer, and a non-magnetic Ni layer with a thickness of 1 μm or more and not exceeding 1.5 μm is formed on the Zn layer.
- A magnetic scale characterized in that a layer of an alloy of P is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5544583A JPS59180424A (en) | 1983-03-31 | 1983-03-31 | Magnetic scale and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5544583A JPS59180424A (en) | 1983-03-31 | 1983-03-31 | Magnetic scale and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59180424A JPS59180424A (en) | 1984-10-13 |
| JPH0344249B2 true JPH0344249B2 (en) | 1991-07-05 |
Family
ID=12998788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5544583A Granted JPS59180424A (en) | 1983-03-31 | 1983-03-31 | Magnetic scale and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59180424A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51109224A (en) * | 1975-03-20 | 1976-09-28 | Satosen Co Ltd | TAINETSUSEICHOKO GOKINHIFUKUOJUSURU KOZOTAI |
| JPS5630602A (en) * | 1979-08-18 | 1981-03-27 | Bosch Gmbh Robert | Device for measuring distance or speed without contact |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4963973U (en) * | 1972-09-15 | 1974-06-05 |
-
1983
- 1983-03-31 JP JP5544583A patent/JPS59180424A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51109224A (en) * | 1975-03-20 | 1976-09-28 | Satosen Co Ltd | TAINETSUSEICHOKO GOKINHIFUKUOJUSURU KOZOTAI |
| JPS5630602A (en) * | 1979-08-18 | 1981-03-27 | Bosch Gmbh Robert | Device for measuring distance or speed without contact |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59180424A (en) | 1984-10-13 |
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