JPH02104638A - Low expansion nonmagnetic alloy - Google Patents
Low expansion nonmagnetic alloyInfo
- Publication number
- JPH02104638A JPH02104638A JP25662188A JP25662188A JPH02104638A JP H02104638 A JPH02104638 A JP H02104638A JP 25662188 A JP25662188 A JP 25662188A JP 25662188 A JP25662188 A JP 25662188A JP H02104638 A JPH02104638 A JP H02104638A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- thermal expansion
- expansion coefficient
- nonmagnetic
- content
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 21
- 239000000956 alloy Substances 0.000 title claims abstract description 21
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 5
- 229910001120 nichrome Inorganic materials 0.000 abstract description 4
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 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
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は主としてＴＶ受像管等の電子管の管内部品とし
て使用される低膨張非磁性合金に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a low expansion non-magnetic alloy mainly used as an internal part of an electron tube such as a TV picture tube.
例えばＴＶ受像管の電子銃用部材等は、電子ビームへの
磁気的撹乱を避けるため非磁性の金属材料が多く使用さ
れており、その代表的合金としては１６％Ｃｒ−１４％
Ｎｉ−残Ｆｅのいわゆる非磁性ステンレスが挙げられる
。この合金は透磁率が１．００５以下の非磁性で、しか
も深絞りやバーリング加工等の冷間加工性にも優れてい
るため各種電子管の管内部品として広く用いられている
。For example, non-magnetic metal materials are often used in electron gun components for TV picture tubes to avoid magnetic disturbance to the electron beam, and a typical alloy is 16%Cr-14%.
So-called non-magnetic stainless steel consisting of Ni and residual Fe may be mentioned. This alloy is non-magnetic with a magnetic permeability of 1.005 or less and has excellent cold workability such as deep drawing and burring, so it is widely used as internal parts of various electron tubes.
しかしながら、この合金は熱膨張係数が１８〜１９×ｌ
Ｏ−８７℃と一般の金属材料の中でも大きい部類に属す
るため、電子管動作中の温度上昇に伴う熱膨張により部
材に位置ズレが生じ易く、このことが電子ビームの走査
特性に悪影響を及ぼすという大きな問題点を有していた
。特に近年、ＴＶ受像管あるいはＯＡ機器のデイスプレ
ィ管等の高精細化が急速に進み、また画面の輝度を上げ
るため、電子銃の高出力化が図られるなど、この管内部
材の位置ズレに対する要求度はますます厳しくなってき
ている。However, this alloy has a thermal expansion coefficient of 18-19×l
O-87℃, which is one of the highest among general metal materials, tends to cause misalignment of components due to thermal expansion associated with the temperature rise during electron tube operation, which has a large negative impact on the scanning characteristics of the electron beam. It had some problems. Particularly in recent years, the high definition of TV picture tubes and display tubes of OA equipment has progressed rapidly, and in order to increase the brightness of screens, the output of electron guns has been increased. is becoming increasingly difficult.
以上のような要求に対し一部では２０Ｃｒ−８ＯＮｉの
いわゆるニクロム合金が検討されているが、この合金は
８０％ものＮｉを含有しているため、非常に高価格であ
り、コストの点からどうしても使用対象機種は限定され
ざるを得ない現状である。In response to the above requirements, a so-called nichrome alloy of 20Cr-8ONi is being considered, but this alloy contains as much as 80% Ni, so it is extremely expensive, and it is unavoidable from a cost standpoint. Currently, the types of devices that can be used are limited.
本発明は、このような技術的背景をもとになされたもの
であり、その目的とするところは低膨張でしか□もニク
ロム合金よりも安価な非磁性合金を提供することにある
。The present invention has been made based on this technical background, and its purpose is to provide a nonmagnetic alloy that has low expansion and is also cheaper than nichrome alloy.
本発明合金の化学組成は、Ｎｉ ３５〜４５％、Ｃｒ
１６〜２８％、残部実質的にＦｅよりなるものであり、
それぞれの成分範囲限定理由は以下の通りである。The chemical composition of the alloy of the present invention is 35-45% Ni, Cr
16 to 28%, the remainder substantially consisting of Fe,
The reason for limiting each component range is as follows.
まずＮｉ含有量であるが、これは合金の熱膨張係数（３
０℃−２００℃の平均熱膨張係数）を１６ Ｘ １０”
／℃以下に抑えるため３５〜４５％に限定した。Ｎｉ
含有欧がこの範囲より高くても低くても熱膨張係数は。First of all, the Ni content is the alloy's thermal expansion coefficient (3
Average thermal expansion coefficient from 0℃ to 200℃) 16 x 10”
The content was limited to 35 to 45% in order to keep the temperature below /°C. Ni
The coefficient of thermal expansion is higher or lower than this range.
１６ Ｘ １０−’ ／’Ｃよりも大きくなり、目的の
特性が得られない。16 x 10-'/'C, and the desired characteristics cannot be obtained.
次にＣｒ含有量であるが、Ｃｒが１６％を下回ると合金
の透磁率が１．２を越えるようになり電子管管内部品と
して必要な非磁性レベルが得られなくなり、逆に２８％
を上回ると、非磁性レベルは非常に良好となるが、熱膨
張係数が１６ Ｘ １０” ／℃を越えるようになり、
さらに合金の加工性も悪くなるため、Ｃｒ １６〜２８
％に限定した。Next, regarding the Cr content, if the Cr content is less than 16%, the magnetic permeability of the alloy will exceed 1.2, making it impossible to obtain the nonmagnetic level necessary for the internal parts of the electron tube;
, the nonmagnetic level is very good, but the coefficient of thermal expansion exceeds 16 x 10"/°C,
Furthermore, the workability of the alloy deteriorates, so Cr 16-28
%.
なお、Ｎｉ、Ｃｒ以外の元素に関して言えば、合金の工
業的生産性の点がら若干量の脱酸元素（例えばＳＬ、Ｍ
ｎ、Ａ１等）が含有されることはやむを得ない。また、
深絞り、バーリング加工等の冷間加工性の点からは、Ｃ
，Ｐ、Ｓ、Ｎ、０等の不純物元素はできるだけ少ない方
が望ましい。Regarding elements other than Ni and Cr, some amount of deoxidizing elements (for example, SL, M
n, A1, etc.) is unavoidable. Also,
From the point of view of cold workability such as deep drawing and burring, C
, P, S, N, 0, and other impurity elements are preferably as small as possible.
以下、本発明を実施例により説明する。The present invention will be explained below using examples.
第１表に示す化学組成の合金を真空誘導溶解炉により造
塊し、熱間圧延、冷間圧延で板厚０．５ｍの帯材に仕上
げたのち水素中で８００℃の軟化焼鈍を行ない、熱膨張
係数、透磁率、機械的性質等の特性評価を実施した。そ
の結果を第２表に示す。An alloy having the chemical composition shown in Table 1 was formed into an ingot in a vacuum induction melting furnace, hot-rolled and cold-rolled into a strip with a thickness of 0.5 m, and then softened and annealed at 800°C in hydrogen. Characteristics such as thermal expansion coefficient, magnetic permeability, and mechanical properties were evaluated. The results are shown in Table 2.
第２表の結果から明らかなように、Ｎｉ３５〜４５％、
Ｃｒ１６〜２８％、残部Ｆｅの組成範囲内で３０〜２０
０℃間の平均熱膨張係数が１６ Ｘ １０” ／℃以下
、透磁率が１．２以下、焼鈍状態での伸びが３部以上と
いう低膨張、非磁性および良好な冷間加工性の３つの特
性を満たす合金が得られることがわかる。また、この合
金はＮｉ含有量がニクロム合金の約半分であり、価格的
にも大変有利である。As is clear from the results in Table 2, Ni35-45%,
Within the composition range of 16-28% Cr, balance Fe 30-20
It has three properties: an average coefficient of thermal expansion at 0°C of 16 x 10”/°C or less, a magnetic permeability of 1.2 or less, an elongation in the annealed state of 3 parts or more, non-magnetism, and good cold workability. It can be seen that an alloy satisfying the characteristics can be obtained.Also, this alloy has about half the Ni content of the nichrome alloy, and is very advantageous in terms of price.
第２表 〔発明の効果〕Table 2 〔Effect of the invention〕
Claims (1)
部実質的にＦｅよりなる低膨張非磁性合金。A low expansion nonmagnetic alloy consisting of 35 to 45% Ni, 16 to 28% Cr, and the balance substantially Fe at 1% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63256621A JP2755962B2 (en) | 1988-10-12 | 1988-10-12 | Low expansion non-magnetic alloys and tube parts of electron tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63256621A JP2755962B2 (en) | 1988-10-12 | 1988-10-12 | Low expansion non-magnetic alloys and tube parts of electron tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02104638A true JPH02104638A (en) | 1990-04-17 |
| JP2755962B2 JP2755962B2 (en) | 1998-05-25 |
Family
ID=17295160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63256621A Expired - Fee Related JP2755962B2 (en) | 1988-10-12 | 1988-10-12 | Low expansion non-magnetic alloys and tube parts of electron tubes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2755962B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02247955A (en) * | 1989-03-18 | 1990-10-03 | Hitachi Ltd | Electron gun for color braun tube |
| EP0425205A2 (en) * | 1989-10-24 | 1991-05-02 | Thomson Consumer Electronics, Inc. | Color picture tube having an electron gun with reduced convergence drift |
| US5751101A (en) * | 1996-03-04 | 1998-05-12 | Hitachi, Ltd. | Cathode ray tube having a contact spring fixed to an end of the shield cup with a micro vickers hardness of 250-400 |
| CN108130469A (en) * | 2017-12-20 | 2018-06-08 | 吴方立 | Antiscour, anti-corrosive alloy material and its smelting technology |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5959861A (en) * | 1982-09-29 | 1984-04-05 | Toshiba Corp | Parts in electron tube |
-
1988
- 1988-10-12 JP JP63256621A patent/JP2755962B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5959861A (en) * | 1982-09-29 | 1984-04-05 | Toshiba Corp | Parts in electron tube |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02247955A (en) * | 1989-03-18 | 1990-10-03 | Hitachi Ltd | Electron gun for color braun tube |
| EP0425205A2 (en) * | 1989-10-24 | 1991-05-02 | Thomson Consumer Electronics, Inc. | Color picture tube having an electron gun with reduced convergence drift |
| US5751101A (en) * | 1996-03-04 | 1998-05-12 | Hitachi, Ltd. | Cathode ray tube having a contact spring fixed to an end of the shield cup with a micro vickers hardness of 250-400 |
| CN108130469A (en) * | 2017-12-20 | 2018-06-08 | 吴方立 | Antiscour, anti-corrosive alloy material and its smelting technology |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2755962B2 (en) | 1998-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |