JP2002241919A - Metallic material having surface nonmagnetic layer composed of metal powder thereon - Google Patents
Metallic material having surface nonmagnetic layer composed of metal powder thereonInfo
- Publication number
- JP2002241919A JP2002241919A JP2001042042A JP2001042042A JP2002241919A JP 2002241919 A JP2002241919 A JP 2002241919A JP 2001042042 A JP2001042042 A JP 2001042042A JP 2001042042 A JP2001042042 A JP 2001042042A JP 2002241919 A JP2002241919 A JP 2002241919A
- Authority
- JP
- Japan
- Prior art keywords
- metal powder
- nonmagnetic layer
- metallic material
- layer composed
- 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.)
- Withdrawn
Links
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属粉末による表
面非磁性層を形成した金属材料に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal material having a surface nonmagnetic layer formed of metal powder.
【０００２】[0002]
【従来の技術とその課題】従来、ロールの肉盛には１３
Ｃｒ系や１８Ｃｒ系のステンレスの金属粉末が用いられ
ているが、これらは強磁性であるため、外部磁場変化の
影響を受けやすく、例えば、ロール周辺で高周波焼入
れ、高周波溶接等の高周波誘導加熱が行われている際、
それらから発生する磁束の変化により生じる誘導電流の
影響を受け、場合によっては、母材とロール間にスパー
クが発生し鋼材の表面に疵を発生させるという問題があ
った。BACKGROUND OF THE INVENTION Conventionally, 13
Cr-based and 18Cr-based stainless steel metal powders are used, but since they are ferromagnetic, they are easily affected by changes in the external magnetic field. When being done,
Under the influence of the induced current generated by the change of the magnetic flux generated from them, there is a problem that a spark is generated between the base material and the roll and a flaw is generated on the surface of the steel material in some cases.
【０００３】[0003]
【課題を解決するための手段】上述したような問題を解
消するため、発明者らは鋭意開発を進めた結果、溶射・
肉盛用の粉末の磁気特性に着目し、外部磁場変化の影響
を受けない表面層を形成させる金属粉末による表面非磁
性層を形成した金属材料を提供する。その発明の要旨と
するところは、 （１）金属の表面に非磁性金属粉末を溶射・肉盛を行う
ことにより外部磁場変化の影響を受けない非磁性層を形
成してなることを特徴とする金属粉末による表面非磁性
層を形成した金属材料。 （２）前記（１）に記載の非磁性金属粉末を用いて形成
された硬度２３０ＨＢ以上であることを特徴とする金属
粉末による表面非磁性層を形成した金属材料にある。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have made intensive developments, and as a result, thermal spraying
The present invention provides a metal material having a surface non-magnetic layer formed of a metal powder that forms a surface layer that is not affected by an external magnetic field change, focusing on the magnetic characteristics of the powder for overlaying. The gist of the invention is as follows: (1) A non-magnetic layer which is not affected by an external magnetic field change is formed by spraying and overlaying a non-magnetic metal powder on a metal surface. Metal material with a surface non-magnetic layer made of metal powder. (2) A metal material having a surface nonmagnetic layer formed of metal powder, having a hardness of 230 HB or more, formed using the nonmagnetic metal powder described in (1).
【０００４】[0004]
【発明の実施の形態】以下、本発明について詳細に説明
する。本発明に係る非磁性金属粉末、例えば、１８−８
系のオーステナイト系ステンレスや高Ｍｎ非磁性鋼が挙
げられるが、機械的強度を考慮すると、Ｃ：０．３５％
以下、Ｎ：０．０５％以下、Ｍｎ：１９〜４５％、Ｓ
ｉ：１．０％以下、Ｃｒ：３〜１５％、Ｓ：０．０１５
〜０．０３０％、Ａｌ：０．０３〜０．５％残部実質的
にＦｅおよび不可避の不純物からなる高Ｍｎ非磁性鋼が
望ましい。このような非磁性金属粉末により、例えばガ
イドローラー表面に非磁性層を形成した場合、高周波誘
導加熱が行われいる直近のガイドローラー表面に肉盛を
した場合、従来の場合はスパークが頻繁に発生し、母材
の表面に疵が生じていたものが、スパークの発生が見ら
れず、母材の表面品質は極めて良好となった。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. Non-magnetic metal powder according to the present invention, for example, 18-8
Austenitic stainless steel and high Mn non-magnetic steel, but considering mechanical strength, C: 0.35%
Hereinafter, N: 0.05% or less, Mn: 19 to 45%, S
i: 1.0% or less, Cr: 3 to 15%, S: 0.015
-0.030%, Al: 0.03-0.5% The balance is desirably a high Mn nonmagnetic steel substantially composed of Fe and unavoidable impurities. For example, when a non-magnetic layer is formed on the surface of a guide roller by such a non-magnetic metal powder, when the surface of the guide roller near the surface where high-frequency induction heating is performed is overlaid, sparks frequently occur in the conventional case. Although the surface of the base material had flaws, no spark was observed, and the surface quality of the base material was extremely good.
【０００５】このスパークの発生原因としては、ガイド
ローラーと母材間の磁束密度の変化により発生する誘導
電流が考えられる。透磁率の高い従来の使用品を肉盛し
た場合、このような磁場変化に敏感に反応するため誘導
電流が発生しやすく、スパークが頻繁に発生する。それ
に対し、透磁率の低い本発明による肉盛した場合は、磁
場変化の影響を殆ど受けずスパークの発生を防止するこ
とが出来た。また、ロール寿命に及ぼす影響を考慮する
と、非磁性金属粉末により形成された表面非磁性層の硬
さが２３０ＨＢ以上となる鋼種を使用するのが望まし
い。A possible cause of the spark is an induced current generated by a change in magnetic flux density between the guide roller and the base material. When a conventional product having a high magnetic permeability is built up, it reacts sensitively to such a change in the magnetic field, so that an induced current is easily generated and sparks are frequently generated. On the other hand, in the case of the cladding according to the present invention having a low magnetic permeability, it was possible to prevent the occurrence of sparks without being substantially affected by the magnetic field change. In consideration of the effect on the roll life, it is desirable to use a steel type in which the hardness of the surface nonmagnetic layer formed of the nonmagnetic metal powder is 230 HB or more.
【０００６】[0006]
【実施例】以下、本発明を実施例をもって具体的に説明
する。表１に掲げる化学成分の粉末をガスアトマイズ法
により製造し、−２１０〜＋６３μｍに粒度調整した
後、実機試験として、高周波誘導加熱が行われている直
近のガイドローラー表面に各粉末を肉盛し、スパークの
発生頻度と母材表面の品質（疵の発生等）の相関に関し
調査した。その結果を表２に示す。EXAMPLES Hereinafter, the present invention will be described specifically with reference to examples. After the powders of the chemical components listed in Table 1 were produced by the gas atomization method and the particle size was adjusted to −210 to +63 μm, as an actual machine test, each powder was built up on the surface of the nearest guide roller where high-frequency induction heating was performed. We investigated the correlation between the frequency of spark generation and the quality of the base metal surface (defects, etc.). Table 2 shows the results.
【０００７】[0007]
【表１】 [Table 1]
【０００８】[0008]
【表２】 [Table 2]
【０００９】以上の試験の結果、高周波誘導加熱が行わ
れいる直近のガイドローラー表面に肉盛をした場合、従
来の肉盛をした場合はスパークが頻繁に発生し、母材の
表面に疵が生じていた。これに対し、本発明による非磁
性金属粉末により非磁性層を形成した場合には、スパー
クの発生が見られず、母材の表面品質は極めて良好であ
ることが判る。[0009] As a result of the above test, when the surface of the guide roller in the vicinity where the high-frequency induction heating is performed is overlaid, when the conventional overlaid surface is used, sparks frequently occur, and the surface of the base material has flaws. Had occurred. On the other hand, when the non-magnetic layer was formed from the non-magnetic metal powder according to the present invention, no spark was observed, indicating that the surface quality of the base material was extremely good.
【００１０】[0010]
【発明の効果】以上述べたように、本発明による、非磁
性金属粉末で溶射・肉盛を行うことで外部磁場変化の影
響を受けない表面層を形成した金属材料を提供すること
が出来た。As described above, according to the present invention, a metal material having a surface layer which is not affected by an external magnetic field change can be provided by performing thermal spraying and overlaying with a non-magnetic metal powder. .
Claims (2)
盛を行うことにより外部磁場変化の影響を受けない非磁
性層を形成してなることを特徴とする金属粉末による表
面非磁性層を形成した金属材料。1. A non-magnetic layer made of a metal powder, wherein a non-magnetic layer which is not affected by an external magnetic field is formed by spraying and overlaying a non-magnetic metal powder on the surface of the metal. Formed metal material.
て形成された硬度２３０ＨＢ以上であることを特徴とす
る金属粉末による表面非磁性層を形成した金属材料。2. A metal material having a surface nonmagnetic layer formed of a metal powder and having a hardness of 230 HB or more, formed using the nonmagnetic metal powder according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001042042A JP2002241919A (en) | 2001-02-19 | 2001-02-19 | Metallic material having surface nonmagnetic layer composed of metal powder thereon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001042042A JP2002241919A (en) | 2001-02-19 | 2001-02-19 | Metallic material having surface nonmagnetic layer composed of metal powder thereon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002241919A true JP2002241919A (en) | 2002-08-28 |
Family
ID=18904397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001042042A Withdrawn JP2002241919A (en) | 2001-02-19 | 2001-02-19 | Metallic material having surface nonmagnetic layer composed of metal powder thereon |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002241919A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017534766A (en) * | 2014-09-19 | 2017-11-24 | スコペルタ・インコーポレイテッドＳｃｏｐｅｒｔａ， Ｉｎｃ． | Readable thermal spraying |
| US11939646B2 (en) | 2018-10-26 | 2024-03-26 | Oerlikon Metco (Us) Inc. | Corrosion and wear resistant nickel based alloys |
-
2001
- 2001-02-19 JP JP2001042042A patent/JP2002241919A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017534766A (en) * | 2014-09-19 | 2017-11-24 | スコペルタ・インコーポレイテッドＳｃｏｐｅｒｔａ， Ｉｎｃ． | Readable thermal spraying |
| US11939646B2 (en) | 2018-10-26 | 2024-03-26 | Oerlikon Metco (Us) Inc. | Corrosion and wear resistant nickel based alloys |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20080513 |