JPS62146249A - Free-cutting, corroson resistant, soft magnetic steel for bar or pipe - Google Patents
Free-cutting, corroson resistant, soft magnetic steel for bar or pipeInfo
- Publication number
- JPS62146249A JPS62146249A JP28716385A JP28716385A JPS62146249A JP S62146249 A JPS62146249 A JP S62146249A JP 28716385 A JP28716385 A JP 28716385A JP 28716385 A JP28716385 A JP 28716385A JP S62146249 A JPS62146249 A JP S62146249A
- Authority
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- Prior art keywords
- steel
- corrosion resistance
- soft magnetic
- bar
- pipe
- 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.)
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- Soft Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電磁弁などの鉄芯に使用される軟磁性棒または
管用鋼に関し、更に詳しくは、電磁気特性を害なうこと
なしに耐食性および被削性を改善した軟磁性棒管用材に
関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a soft magnetic rod or pipe steel used for the iron core of solenoid valves, etc. This invention relates to a soft magnetic bar pipe material with improved machinability.
（従来の技術）
電磁弁は油、水、空気を始め種々のがス、゛履体例えば
酸、フレオン、燃料、などを制＠流体とする機器の制御
弁として使用される。(Prior Art) Solenoid valves are used as control valves for equipment that control fluids such as oil, water, air, and various other gases, such as acids, freon, fuel, and the like.
電磁弁は、上記のように様々な使用環境におかれるため
鉄芯材料にも耐食性が要求され一般にＦｅ −１２〜１
５４Ｃｒ鋼をペースとした、所謂電磁ステンレス鋼（特
許４３９７６４ 、特許７５１０９０ 。Since solenoid valves are used in various environments as mentioned above, the iron core material is also required to have corrosion resistance, and generally Fe -12 to 1
So-called electromagnetic stainless steel based on 54Cr steel (Patent No. 439764, Patent No. 751090).
特許８３５４７２ ）が使用されている。Patent No. 835472) is used.
（発明が解決しようとする問題点）
しかし、電磁弁の使用環境は益々厳しくなりつつあるこ
とから、磁気特性を劣化させることなく、耐食性を向上
させることが望まれている。(Problems to be Solved by the Invention) However, since the environment in which electromagnetic valves are used is becoming increasingly severe, it is desired to improve corrosion resistance without deteriorating magnetic properties.
（問題点を解決するための手段）
本発明は、上記問題点を解決したものであり、その要旨
はＣ＋Ｎ＜０．０２係、Ｓｔ：Ｏ〜３％、Ａｔ ： ０
．８〜３ ％ ＋ Ｃｒ ： １２〜１８ ’６ ｐ
Ｍｏ ：０．０５〜０．５係、Ｐｂ：０．０５〜０．２
５幅、Ｐ≦０、０４０４ 、 Ｓ ＜、 ０．０３０
％ 、 Ｍｎ≦０．５０％、残部鉄及び不可避不純物よ
りなる鋼でちって、先述の従来鋼に比べ、およそ以下の
特徴夕有する。(Means for solving the problems) The present invention solves the above problems, and its gist is that C+N<0.02, St: O~3%, At: 0
．． 8~3% + Cr: 12~18'6p
Mo: 0.05-0.5, Pb: 0.05-0.2
5 width, P≦0, 0404, S<, 0.030
%, Mn≦0.50%, the balance being iron and unavoidable impurities, and has the following characteristics compared to the conventional steel mentioned above.
（ａ） 磁気特性改善のためにＣ，Ｎは極低に抑えた
。(a) C and N were kept extremely low to improve magnetic properties.
（ｂ） Ａｔ含有量の耐食性におよぼす影響を調査し
た結果、Ａｔ濃度０．２〜０．５５９６の領域に耐食性
の悪い傾向がみられるが、Ａｔを０．８１以上添加する
ことにより、 ＡＡ水準Ｏ〜０．２劣時より耐食性が改
善されることを見出した。即ち、従来鋼がＡｔ水準Ｏ〜
０，２劣であるのに対し、本発明鋼はＡＡ ’Ｉ Ｑ、
８〜３幅含有しているので従来鋼よりも耐食性が向上
した。(b) As a result of investigating the influence of At content on corrosion resistance, it was found that corrosion resistance tends to be poor in the At concentration range of 0.2 to 0.5596, but by adding At of 0.81 or more, the AA level can be improved. It has been found that the corrosion resistance is improved when the temperature is 0 to 0.2. That is, conventional steel has an At level of O~
In contrast, the steel of the present invention has AA'IQ,
Since it contains 8 to 3 widths, corrosion resistance is improved compared to conventional steel.
（Ｃ） 更に耐食性を向上させるためＫ Ｍｏを添加
した。(C) KMo was added to further improve corrosion resistance.
（ｄ） 被削性を改善するためにｐｂを添加した。(d) PB was added to improve machinability.
以上より固有抵抗７０μΩα以上で、良好な延性。From the above, it has a specific resistance of 70 μΩα or more and good ductility.
靭性を有し、従来鋼より耐食性、磁気特性を改善し、更
に快削性をも備えた軟磁性／Ｍを発明した。We have invented a soft magnetic material/M that has toughness, improved corrosion resistance and magnetic properties compared to conventional steels, and also has free machinability.
次に、本発明に於て成分組成を限定する理由を説明する
。Next, the reason for limiting the component composition in the present invention will be explained.
（Ｃ＋Ｎ］
Ｃ，Ｎは結晶格子て侵入量で固溶するため格子夕歪ませ
、また、炭化物、窒化物を形成する。このことが、材料
の軟磁性！悪化させ、更に、靭性。(C+N) C and N form a solid solution in the amount of penetration into the crystal lattice, distorting the lattice, and also forming carbides and nitrides.This worsens the soft magnetic properties of the material and further reduces the toughness.
延性をも劣化させる。そこで、Ｃ，Ｎは極低に抑えるこ
とが必要であり、Ｃ＋Ｎ＜０．０２’Ａとした。It also deteriorates ductility. Therefore, it is necessary to suppress C and N to extremely low values, and C+N<0.02'A.
（Ｃｒ）
油、空気、水、各種ガス、フレオン、燃料などを制御す
るために用いられる電磁弁には、１２Ｃｒ系ステンレス
と同等、或はそれ以上の耐食性が要求される。従って、
耐食性改善のためには、Ｃｒを１２劣以上添加すること
が望ましい。一方、磁気特性、靭性とのバランスを考え
てＣｒ１８％をその上限とする。よって、Ｃｒ：１２〜
１８壬とする。(Cr) Solenoid valves used to control oil, air, water, various gases, freon, fuel, etc. are required to have corrosion resistance equal to or higher than that of 12Cr stainless steel. Therefore,
In order to improve corrosion resistance, it is desirable to add 12 or more Cr. On the other hand, considering the balance between magnetic properties and toughness, the upper limit is set at 18% Cr. Therefore, Cr: 12~
It shall be 18 yen.
〔ＳｌおよびＡｔ］
軟磁性材料が実機使用される際、その磁気特性が良いこ
と、即ち、保磁力が小さく、磁束密度が大きいことは勿
論のこととして、消費電力が小さく耐食性が優れている
ことがポイントとなる。第１図は、製品の耐食性をみる
ために６０℃の３チＮａＣＬ水＠液に２４ ｈｒ浸漬し
て腐食減量を測定したものであるが、耐食性を改善する
ためには、Ａｔ０．８’１以上添加が望ましいことが解
る。また第２図〜第４図の２５℃、５チＨＣ６，Ｈ２Ｓ
Ｏ４，ＨＩＮＯ３゜２４ｈｒ浸漬試験結果からも、Ａｔ
添加は耐食性改善に極めて有効であることが解る。また
、ＡｔＯ，８４以上の領域に於てはＳｔは耐食性の水準
を殆ど変化させない。一方第５図〜第８図は、極低Ｃ，
Ｎ（Ｃ＋Ｎ＜０．０２４ ） １３Ｃｒ −Ｓｔ 、Ａ
ｌ−Ｐｂ系合金に於て、Ｓｔ、Ａｔが磁気特性におよぼ
す影響を示したものである。耐食性の良い領域（ｈｔ≧
０．８９６゜５ｔ）０％）全域て亘りＢｚ ｔ Ｂ５
ｔ ＢＺ５ｐ Ｈｅ全て良好な値を示してのる。また、
消費電力を小さくするために、固有抵抗は高くすること
が望ましいが、第９図からＡｔ≧ｏ、ｓ憾、ｓｔ＞ｏ憾
に於ては７０μΩｍ以上と、高い固有抵抗値が得られる
。しかし、鋼材より製品にするまでの冷間加工性、即ち
延性。[Sl and At] When soft magnetic materials are used in actual equipment, they must have good magnetic properties, that is, low coercive force and high magnetic flux density, as well as low power consumption and excellent corrosion resistance. is the key point. Figure 1 shows the corrosion loss measured by immersing the product in a 3-inch NaCL water @ solution at 60°C for 24 hours to see the corrosion resistance. It can be seen that the above addition is desirable. In addition, 25℃, 5chi HC6, H2S in Figures 2 to 4
From the results of O4, HINO3゜24hr immersion test, At
It can be seen that the addition is extremely effective in improving corrosion resistance. Moreover, in the region of AtO, 84 or more, St hardly changes the level of corrosion resistance. On the other hand, Figures 5 to 8 show extremely low C,
N(C+N<0.024) 13Cr-St, A
This figure shows the influence of St and At on the magnetic properties of l-Pb alloys. Area with good corrosion resistance (ht≧
0.896゜5t) 0%) throughout the entire area Bz t B5
tBZ5pHe all show good values. Also,
In order to reduce power consumption, it is desirable to have a high specific resistance, and from FIG. 9, when At≧o, s, and st>o, a high specific resistance value of 70 μΩm or more can be obtained. However, cold workability, or ductility, from steel to product.
靭性な考え合せるとＳｔ ｅ Ａｊそれぞれ３％以上添
加することは好ましくない。よって、Ｓｔ 、 Ａｔ添
加濃度の上限を３係とする。Considering the toughness, it is not preferable to add 3% or more of each of SteAj. Therefore, the upper limit of the concentration of St and At added is set to the third factor.
以上まとめると Ａｚ：ｎ、８〜３蛎、Ｓｉ：０〜３蛎 となる。To summarize the above Az: n, 8-3 oysters, Si: 0-3 oysters becomes.
（Ｍｏ ：］ Ｍｏは、耐食性改善に極めて効果的な元素である。(Mo:] Mo is an extremely effective element for improving corrosion resistance.
従って、ＭＯを少量添加することにより更に耐食性の改
善を図った。Ｍｏの効果は油、水、大気、各種ガス、フ
レオ／、燃料などが使用環境となる電磁弁鉄芯材には、
０．５劣以上添加では飽和する。Ｍ。Therefore, the corrosion resistance was further improved by adding a small amount of MO. The effect of Mo is on solenoid valve iron core materials that are used in environments such as oil, water, air, various gases, Freo/fuel, etc.
Addition of 0.5 or more will result in saturation. M.
は高価な元素なので極力少量に抑えることが望ましい。Since it is an expensive element, it is desirable to keep it in as small a quantity as possible.
よってＭＯ添加は０．５壬以下に抑えた。またＭｏ添加
０．０５’Ｚ以下では耐食性改善の面でＭｏの効果はな
くなるので下限は０．０５％とした。Therefore, MO addition was suppressed to 0.5 tsun or less. Further, if Mo addition is less than 0.05'Z, the effect of Mo in improving corrosion resistance disappears, so the lower limit was set to 0.05%.
以上よりＭｏ：０．０５〜０．５係とする。Based on the above, Mo: 0.05 to 0.5.
［： ｐｂ 〕
ＦｅがＳｔ 、 Ａｔ、 Ｃｒなど多量に含むと、被剛
性が極めて悪くなる。これを改善するために本発明鋼に
於ては、被剛性を向上させ、かつ磁気特性を劣化させな
い元素としてｐｂを添加する。[: pb] When Fe contains a large amount of St, At, Cr, etc., the stiffness becomes extremely poor. In order to improve this, in the steel of the present invention, PB is added as an element that improves the rigidity and does not deteriorate the magnetic properties.
ｐｂの添加は０．０５４未満では効果がなく、０．２５
俤を越えると効果が飽和する。従ってｐｂば、Ｐｂ：０
．０５〜０．２５壬とする。Addition of pb has no effect below 0.054, and 0.25
The effect becomes saturated when it exceeds 迤. Therefore, pb, Pb:0
．． 0.05 to 0.25 mm.
１： Ｐ 、 Ｓ 、 Ｍｎ ］その他、
不純物元素のうち電磁気特性、延性。1: P, S, Mn] Others,
Electromagnetic properties and ductility among impurity elements.
靭性、及び耐食性、耐久性を損わぬ範囲としてＰ≦０．
０４０％ 、Ｓ≦０．０３０％ 、ＭｎＳ２．５０％と
する。P≦0 as a range that does not impair toughness, corrosion resistance, and durability.
040%, S≦0.030%, and MnS 2.50%.
（実施例）
第１表に、本発明鋼、比較鋼、および従来鋼の化学成分
を示す。(Example) Table 1 shows the chemical components of the present invention steel, comparative steel, and conventional steel.
これらの組成の材料は、冥空誘導炉にて５０にり鋼塊と
して溶製し、それらをφ４ｏに鍛伸後、焼鈍を施した。Materials having these compositions were melted as 50 mm steel ingots in a dark induction furnace, forged and stretched to φ4 o, and then annealed.
更に、焼鈍済のφ４ｏ丸棒より各試験片を作成し、各測
定に充てた。なお磁気測定は、更に真空中で８５０℃４
時間の歪取り焼鈍を施した後に行った。Further, each test piece was prepared from an annealed φ4o round bar and used for each measurement. The magnetic measurement was further carried out in vacuum at 850℃4.
This was done after time strain relief annealing.
第１図〜第４図は、材料の耐食性におよぼすｓｉ。Figures 1 to 4 show the effect of si on the corrosion resistance of the material.
Ａｔの影響を調査したものであるが、全般的にＡｔ添加
が耐食性の改善に極めて効果的であることが解る。しか
し、例外的に第１図の塩水浸漬試験による腐食加速試験
では、Ａｔ ： ｏ、２〜０．５５％付近に耐食性の悪
化する領域がみられるので、塩水に対する耐食性を改善
するためにはＡｔを０．８幅以上添加する必要がある。The influence of At was investigated, and it can be seen that the addition of At is generally extremely effective in improving corrosion resistance. However, as an exception, in the accelerated corrosion test using the salt water immersion test shown in Figure 1, a region where the corrosion resistance deteriorates is seen in the vicinity of At: 2% to 0.55%. It is necessary to add 0.8 width or more.
また、第５図〜第８図は磁気特性におよぼすＳｔ 、
ＡＡの影響を調べたものであるが、Ａｔ無添加材に比べ
Ａｔを添加したもの（Ａｔ≧０．２％）は磁束密度Ｂ２
． Ｂ、（ｋＧ）が飛躍的に向上し、同時に保磁力Ｈｃ
（Ｏｓ）も著しく減少して、磁気特性の飛躍的な向上を
示し良好な値を示している、また磁束密度Ｂ２５（ｋＧ
）もＳｔ 、 １１１度全領域（Ｓｉ：０．３〜２．０
憾。In addition, Figs. 5 to 8 show the effects of St on magnetic properties,
The influence of AA was investigated, and the magnetic flux density B2 of the material with At added (At≧0.2%) was lower than that of the material with no At added.
．． B, (kG) has improved dramatically, and at the same time the coercive force Hc
(Os) also decreased significantly, showing a dramatic improvement in magnetic properties and showing good values. Also, the magnetic flux density B25 (kG
) also St, 111 degrees full range (Si: 0.3~2.0
I regret it.
ｈｔ ： ｏ〜１．７％）に亘り、良好な値を示してい
る。ht: o to 1.7%), showing good values.
第９図は、固有抵抗におよぼすＳｔ、Ａｔの影響を調査
した結果をまとめたものである。実機使用時の消費電力
を小さくするために７０μΩ側以上の固有抵抗をもたせ
るためには図の矢印で示した領域がよいことが解る。FIG. 9 summarizes the results of investigating the effects of St and At on resistivity. It can be seen that the region indicated by the arrow in the figure is best for having a resistivity of 70 μΩ or more in order to reduce power consumption during actual use.
最後に、第１０図に従来鋼と本発明鋼との特性（３４Ｎ
ａＣｔ水溶液６０℃、２４ｈｒ浸漬試験結果）を示しで
ある。Finally, Figure 10 shows the characteristics of the conventional steel and the steel of the present invention (34N
aCt aqueous solution 60° C., 24 hr immersion test results) are shown.
本発明鋼は、従来鋼に比べ、保磁力も小さく、腐食減量
も少ない。即ち、磁気特性、耐食性両面に於て、従来鋼
より改善された鋼種であることが結論できる。The steel of the present invention has a lower coercive force and less corrosion loss than conventional steel. In other words, it can be concluded that this is a steel type that is improved over conventional steels in terms of both magnetic properties and corrosion resistance.
そこで１本発明鋼としてＡ８を従来鋼として魔２７およ
び７ｆｌｉ２９Ｙ選んで電磁弁の可動鉄芯部および固定
鉄芯部に使用し、実機試験を行った。その結果、本発明
＠ Ａ ８は、従来鋼に比べ消費電力は黒２７に対して
は５幅、應２９に対しては４幅低減した。また耐食性に
於ても本発明鋼は従来鋼に比べ著しく優れているので、
長時間に亘り従来鋼よりも安定した性能を発揮したつ更
に本発明鋼はｐｂ快快調鋼もあるので、従来鋼に比べ製
品加工時の工具寿命も約１５〜３５チ向上した。Therefore, A8 was selected as the steel of the present invention, and Ma27 and 7fli29Y were selected as the conventional steels, and used for the movable iron core and fixed iron core of a solenoid valve, and an actual machine test was conducted. As a result, the power consumption of the present invention@A8 was reduced by 5 widths for black 27 and by 4 widths for red 29 compared to conventional steel. In addition, the steel of the present invention is significantly superior to conventional steel in terms of corrosion resistance.
In addition to exhibiting more stable performance over a long period of time than conventional steel, the steel of the present invention is also a PB high-temperature steel, so the tool life during product machining is improved by about 15 to 35 inches compared to conventional steel.
第１図〜第４図は本発明鋼に於るＳｔ、Ａｔ含有量と耐
食性との関係を表す図、第５図〜第８図は本発明鋼のＳ
ｉ 、 Ａｔ含有量と磁気特性、即ち、磁束密度Ｂｚ
Ｆ Ｂ５ ｔ Ｊｓ（ｋＧ） ｒ保磁力Ｈｅ（Ｏｅ）と
の関係を表す図、第９図は、本発明鋼のＳｔ、Ａｔ含有
量と固有抵抗との関係を表す図、第１０図は、本発明鋼
と従来鋼の保磁力Ｉ（。（Ｏｓ ）耐食性を比較した図
である。
し」
第９図
５１％
１−４ｃ （Ｏｅ）
ｍ−鴫 轡 曲
９ Ｂ ８ ＢFigures 1 to 4 are diagrams showing the relationship between the St and At contents and corrosion resistance in the steel of the present invention, and Figures 5 to 8 are diagrams showing the relationship between the St and At contents and corrosion resistance of the steel of the present invention.
i, At content and magnetic properties, i.e. magnetic flux density Bz
F B5 t Js (kG) r A diagram showing the relationship with coercive force He (Oe), FIG. 9 is a diagram showing the relationship between St and At contents and specific resistance of the steel of the present invention, and FIG. This is a diagram comparing the coercive force I (Os) corrosion resistance of the present invention steel and conventional steel. Figure 9 51% 1-4c (Oe)
Claims (1)
耐食軟磁性棒管用鋼。[Claims] C+N<0.02%, Si: 0-3%, Mn≦0.50%, Cr: 12-18%, Al: 0.8-3%, Mo: 0.05-0 .5%, Pb: 0.05-0.25%, P≦0.040%, S≦0.030%, the remainder being iron and inevitable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60287163A JPH0610324B2 (en) | 1985-12-20 | 1985-12-20 | Free-cutting corrosion resistant steel for soft magnetic rod tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60287163A JPH0610324B2 (en) | 1985-12-20 | 1985-12-20 | Free-cutting corrosion resistant steel for soft magnetic rod tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62146249A true JPS62146249A (en) | 1987-06-30 |
| JPH0610324B2 JPH0610324B2 (en) | 1994-02-09 |
Family
ID=17713891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60287163A Expired - Fee Related JPH0610324B2 (en) | 1985-12-20 | 1985-12-20 | Free-cutting corrosion resistant steel for soft magnetic rod tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610324B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0483857A (en) * | 1990-07-24 | 1992-03-17 | Sanyo Special Steel Co Ltd | Highly corrosion resistant soft-magnetic bar and tube steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518736A (en) * | 1974-07-11 | 1976-01-23 | Nippon Hodo | ASUFUARUTOFUINITSUSHAANO HOSOHABAJIZAICHOSEISOCHI |
| JPS53119721A (en) * | 1977-03-30 | 1978-10-19 | Hitachi Metals Ltd | Abrassionnresistant high permeability alloy |
| JPS59185762A (en) * | 1983-04-07 | 1984-10-22 | Sanyo Tokushu Seikou Kk | Free-cutting soft-magnetic steel with corrosion resistance for bar or pipe |
-
1985
- 1985-12-20 JP JP60287163A patent/JPH0610324B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518736A (en) * | 1974-07-11 | 1976-01-23 | Nippon Hodo | ASUFUARUTOFUINITSUSHAANO HOSOHABAJIZAICHOSEISOCHI |
| JPS53119721A (en) * | 1977-03-30 | 1978-10-19 | Hitachi Metals Ltd | Abrassionnresistant high permeability alloy |
| JPS59185762A (en) * | 1983-04-07 | 1984-10-22 | Sanyo Tokushu Seikou Kk | Free-cutting soft-magnetic steel with corrosion resistance for bar or pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0483857A (en) * | 1990-07-24 | 1992-03-17 | Sanyo Special Steel Co Ltd | Highly corrosion resistant soft-magnetic bar and tube steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0610324B2 (en) | 1994-02-09 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |