JPH09235655A - Iron-nickel alloy for electron gun part, and electron gun press punched part - Google Patents

Iron-nickel alloy for electron gun part, and electron gun press punched part

Info

Publication number
JPH09235655A
JPH09235655A JP8065102A JP6510296A JPH09235655A JP H09235655 A JPH09235655 A JP H09235655A JP 8065102 A JP8065102 A JP 8065102A JP 6510296 A JP6510296 A JP 6510296A JP H09235655 A JPH09235655 A JP H09235655A
Authority
JP
Japan
Prior art keywords
electron gun
press
less
alloy
punchability
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Withdrawn
Application number
JP8065102A
Other languages
Japanese (ja)
Inventor
Norio Yuki
典夫 結城
Kiyoaki Nishikawa
清明 西川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikko Kinzoku KK
Original Assignee
Nikko Kinzoku KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nikko Kinzoku KK filed Critical Nikko Kinzoku KK
Priority to JP8065102A priority Critical patent/JPH09235655A/en
Priority to TW086101706A priority patent/TW429269B/en
Priority to CN97102899A priority patent/CN1057571C/en
Priority to KR1019970006610A priority patent/KR100210570B1/en
Publication of JPH09235655A publication Critical patent/JPH09235655A/en
Withdrawn legal-status Critical Current

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  • Punching Or Piercing (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve punchability at the time of working, by means of press punching, an Fe-Ni alloy for electron gun parts into electron gun press punched parts represented by electron gun electrode. SOLUTION: This Fe-Ni alloy has a composition containing, by weight, 30-55% Ni, <=0.5% Si, <=1.5% Mn, <=0.2% Al, and 0.005-0.020% O. The amount of S, deteriorating corrosion resistance, is regulated to <0.002%. By controlling the amount of oxygen to 0.005-0.020%, press punchability can be improved and a press fracture surface, increased in the ratio of fracture surface and reduced in burr, can be obtained at the time of press-punching minute holes 10a, 10b, and 10c to form electron gun press punched parts represented by an electron gun electrode 10. Deterioration in corrosion resistance can also be prevented.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、電子銃部品、例え
ば電子銃電極材料として好適な、プレス打ち抜き性を向
上させ、しかも耐食性を劣化させないFe−Ni合金並
びに該合金素材をプレス打ち抜きすることにより加工
し、該素材に電子ビームを通過させる微小孔を穿設した
電子銃プレス打ち抜き加工部品、代表的に電子銃電極に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electron gun component, for example, an electron gun electrode material, which is suitable for use as an electron gun electrode material, which improves press punchability and does not deteriorate corrosion resistance. The present invention relates to an electron gun press-punched component, typically an electron gun electrode, which has been machined and is provided with minute holes through which an electron beam passes.

【0002】[0002]

【従来の技術】図1は、公知のシャドウマスク型カラー
ブラウン管の断面図であって、パネル1に赤、緑、青の
3原色を発光する蛍光膜2が塗布されており、一方ネッ
ク部には電子ビーム3を発射する電子銃4が備えられて
いる。電子ビーム3は偏向ヨーク5により偏向走査され
る。6はシャドウマスク、そして7は磁気シールドであ
る。
2. Description of the Related Art FIG. 1 is a cross-sectional view of a known shadow mask type color cathode ray tube, in which a panel 1 is coated with a phosphor film 2 for emitting three primary colors of red, green and blue, while a neck portion is provided. Is provided with an electron gun 4 for emitting an electron beam 3. The electron beam 3 is deflected and scanned by the deflection yoke 5. 6 is a shadow mask, and 7 is a magnetic shield.

【0003】図2(a)及び(b)は、電子銃4に装備
される、打ち抜き加工部品の一例としての電極10を示
す斜視図及び断面図である。電極10は、電子銃の陰極
から放出された熱電子を加速させる役目をなす。電極1
0にはそれぞれ赤、緑及び青発色用ビームを通過させる
微小孔10a、10b及び10cをコイニングとプレス
打ち抜き加工により形成している。
2 (a) and 2 (b) are a perspective view and a cross-sectional view showing an electrode 10 as an example of a punched component mounted on the electron gun 4. As shown in FIG. The electrode 10 serves to accelerate thermoelectrons emitted from the cathode of the electron gun. Electrode 1
At 0, fine holes 10a, 10b and 10c are formed by coining and press punching for passing the red, green and blue coloring beams, respectively.

【0004】一般に、受像管などに用いられる電子銃部
品は、板厚0.05〜0.5mm程度の非磁性ステンレ
ス鋼を上述のようにコイニングを経てあるいは経ずにプ
レス打ち抜き加工することにより完成させる。
Generally, electron gun parts used for picture tubes and the like are completed by press-punching non-magnetic stainless steel having a plate thickness of about 0.05 to 0.5 mm with or without coining as described above. Let

【0005】一般に、受像管などに用いられる電子銃部
品用材料としては、非磁性ステンレス鋼が良く知られて
いるが、最近は、電子銃の陰極から放出された熱電子を
加速させる電極10には、非磁性の指標である透磁率が
1に近いことよりもむしろ低熱膨張特性が重視されるよ
うになっている。すなわち、近年のコンピューターディ
スプレー等の受像管の高精細化、高性能化にともない、
電極部品の熱膨張による微妙な寸法変化がパネル1(図
1参照)上の画面の性能(色純度)に影響するようにな
ってきたのである。そこで、低膨張特性を持つFe−N
i合金、特にFe−42%Ni合金(42合金)が電極
用材料として用いられ始めたが、従来の42合金は電極
部品に微小孔10a、10b、10cを打ち抜き加工す
る際に、ポンチが素材から打ち抜きカスを切り放す先端
縁10e(図2参照)にバリBが発生する問題がある。
打ち抜き加工時に発生するバリは、高精度が要求される
電子銃部品の寸法精度に悪影響を与え、また、高電圧下
でのバリからの異常放電によって電子銃の耐電圧が低下
するといった致命的欠陥となる場合もある。さらに、今
後受像管のさらなる高精細化をふまえ、ますます電子銃
部品に発生するバリ低減への要求は厳しくなっている。
Generally, non-magnetic stainless steel is well known as a material for electron gun parts used in a picture tube or the like, but recently, it is used as an electrode 10 for accelerating thermoelectrons emitted from the cathode of an electron gun. Indicates that low thermal expansion characteristics are more important than the fact that the magnetic permeability, which is a non-magnetic index, is close to 1. That is, with the recent increase in definition and performance of picture tubes such as computer displays,
Subtle dimensional changes due to thermal expansion of the electrode parts have come to affect the performance (color purity) of the screen on the panel 1 (see FIG. 1). Therefore, Fe-N with low expansion characteristics
i alloys, especially Fe-42% Ni alloys (42 alloys), have begun to be used as electrode materials. Conventional 42 alloys use punches as a raw material when punching fine holes 10a, 10b, 10c in electrode parts. There is a problem that burr B is generated on the leading edge 10e (see FIG. 2) that cuts out the punched dust.
Burrs that occur during punching adversely affect the dimensional accuracy of electron gun parts that require high accuracy, and a fatal defect that the withstand voltage of the electron gun decreases due to abnormal discharge from burrs under high voltage. In some cases, Further, in the future, the demand for reduction of burrs generated in electron gun parts will become stricter in consideration of higher definition of picture tubes.

【0006】従来から、Fe−Ni合金の打ち抜き性を
改善するための提案が、特開平6−122945号、特
開平6−184703号、特開平7−3400号、特開
平7−34199号等によりなされている。その中で、
特開平6−184703号では、S含有量を0.002
〜0.05%に規定し、SまたはS化合物を粒界または
粒内に分散することが提案されているが、単に快削性元
素であるSを添加し、その含有量を規定するだけでは、
最近の極めて精密なプレス加工でのバリ抑制には十分と
いえない。しかも、Sの添加は材料の耐食性を劣化さ
せ、電子銃に組み立てられるまでの工程や、保管時に錆
が発生するという問題を起こすことがある。次に、特開
平6−122945号、特開平7−3400号、特開平
7−34199号では、Ti、Nb、V、Ta、W、Z
r等の強度向上元素を添加し、硬さ上昇と適度の脆化に
よりバリ発生を押さえようとする提案がなされている
が、硬さ上昇による金型寿命の低下や特殊元素添加によ
るコストアップの問題を抱えている。
Conventionally, proposals for improving the punchability of Fe-Ni alloys have been made in JP-A-6-122945, JP-A-6-184703, JP-A-7-3400, JP-A-7-34199, etc. Has been done. inside that,
In JP-A-6-184703, the S content is 0.002.
It is proposed to disperse S or S compound in the grain boundary or in the grain by specifying to 0.05%, but if S is added as a free-cutting element and the content thereof is specified. ,
It cannot be said to be sufficient for burr suppression in recent extremely precise press working. Moreover, the addition of S deteriorates the corrosion resistance of the material, which may cause a problem that rust occurs during the process of assembling the electron gun and during storage. Next, in JP-A-6-122945, JP-A-7-3400, and JP-A-7-34199, Ti, Nb, V, Ta, W, and Z are disclosed.
It has been proposed to add a strength-improving element such as r to suppress the occurrence of burrs by increasing hardness and moderate embrittlement, but shortening the mold life due to increasing hardness and increasing costs by adding special elements. I have a problem.

【0007】[0007]

【発明が解決しようとする課題】本発明は、上記従来技
術の問題点を解消し、打ち抜き性を改善し、しかも耐食
性を劣化させない、更には金型寿命の低下や特殊元素添
加によるコストアップの問題を排除した電子銃部品用F
e−Ni合金並びに該合金をプレス打ち抜きにより加工
した電子銃電極に代表される、電子銃プレス打ち抜き加
工部品を提供することを課題とするものである。
DISCLOSURE OF THE INVENTION The present invention solves the above problems of the prior art, improves punchability, does not deteriorate corrosion resistance, and further shortens the die life and increases the cost by adding special elements. F for electron gun parts that eliminates problems
It is an object of the present invention to provide an electron gun press punched component represented by an e-Ni alloy and an electron gun electrode obtained by punching the alloy.

【0008】[0008]

【課題を解決するための手段】本発明者等は、微量成分
のプレス打ち抜き性に及ぼす影響を鋭意研究した結果、
特開平6−184703号で提唱されたような硫黄添加
作用によらずとも、酸素量を特定の範囲にコントロール
することによって、電子銃部品用Fe−Ni合金のプレ
ス打ち抜き性を改善することができ、同時に硫黄含有量
を規制することで、プレス打ち抜き性と硫黄添加による
耐食性の劣化という上記課題を解決することができた。
金型寿命の低下や特殊元素添加によるコストアップの問
題も生じない。
Means for Solving the Problems As a result of intensive studies on the influence of trace components on press punchability, the present inventors have found that
It is possible to improve the press punchability of the Fe-Ni alloy for electron gun parts by controlling the oxygen amount within a specific range without depending on the sulfur addition action proposed in JP-A-6-184703. At the same time, by controlling the sulfur content, it was possible to solve the above problems of press punchability and deterioration of corrosion resistance due to the addition of sulfur.
There is no problem of shortening the mold life and cost increase due to the addition of special elements.

【0009】すなわち、本発明は、重量%で、Ni:3
0〜55%、Si:0.5%以下、Mn:1.5%以
下、Al:0.2%以下、そしてO:0.005〜0.
020%を含み、S:0.002%未満とし、残部が実
質的にFe及び不可避的不純物よりなる電子銃部品用F
e−Ni合金を提供するものであり、更には、重量%
で、Ni:30〜55%、Si:0.5%以下、Mn:
1.5%以下、Al:0.2%以下、そしてO:0.0
05〜0.020%を含み、S:0.002%未満と
し、残部が実質的にFe及び不可避的不純物よりなるF
e−Ni合金製電子銃プレス打ち抜き加工部品を提供す
るものである。電子銃プレス打ち抜き加工部品の代表例
は電子銃電極である。
That is, according to the present invention, the weight ratio of Ni: 3 is 3%.
0-55%, Si: 0.5% or less, Mn: 1.5% or less, Al: 0.2% or less, and O: 0.005-0.
F for electron gun parts containing 020%, S: less than 0.002%, and the balance substantially Fe and unavoidable impurities
to provide an e-Ni alloy, further comprising wt%
Then, Ni: 30 to 55%, Si: 0.5% or less, Mn:
1.5% or less, Al: 0.2% or less, and O: 0.0
05: 0.020%, S: less than 0.002%, the balance F substantially consisting of Fe and unavoidable impurities
The present invention provides an electron gun press punched part made of an e-Ni alloy. A typical example of an electron gun press punching component is an electron gun electrode.

【0010】[0010]

【発明の実施の形態】以下、本発明の合金元素の数値限
定理由を述べる。 (Ni):NiはFe−Ni合金の熱膨張特性を決定す
る重要な元素であり、30%未満ではあるいは55%を
超えると熱膨張係数が大きくなり過ぎ好ましくない。よ
って、Niの成分範囲を30〜55%とする。
BEST MODE FOR CARRYING OUT THE INVENTION The reasons for limiting the numerical values of alloy elements of the present invention will be described below. (Ni): Ni is an important element that determines the thermal expansion characteristics of the Fe—Ni alloy. If it is less than 30% or more than 55%, the thermal expansion coefficient becomes too large, which is not preferable. Therefore, the range of the Ni component is set to 30 to 55%.

【0011】(Si):Siは主に脱酸剤として使用さ
れ、Fe−Ni合金中に、少量、A系もしくはB系また
はC系介在物として存在する。また、固溶Siは、Fe
−Ni合金を硬くして打ち抜き性を向上させるので、む
しろ少量含有させることが好ましい。ただし、Siを
0.5%を超えて含有させると、Fe−Ni合金が硬く
なりすぎ、金型寿命を低下させるので好ましくない。し
たがって、Siの成分範囲は0.5%以下とする。な
お、上記理由で、好ましいSi成分範囲は0.005〜
0.5%である。
(Si): Si is mainly used as a deoxidizing agent and is present in Fe-Ni alloys in a small amount as an A type or B type or C type inclusion. Also, the solid solution Si is made of Fe
It is preferable to contain a small amount of -Ni alloy because it hardens and improves the punchability. However, if the content of Si exceeds 0.5%, the Fe—Ni alloy becomes too hard, and the mold life is undesirably reduced. Therefore, the Si component range is 0.5% or less. For the above reason, the preferable Si component range is 0.005 to 0.005.
0.5%.

【0012】(Mn):Mnは通常脱酸及び熱間加工性
を向上させる目的で添加される。この結果、MnO系介
在物、MnS系介在物、あるいは、さらにSiとも反応
してMn−Si−O系介在物が形成される。MnもSi
同様にFe−Ni合金を硬くするので、打ち抜き性向上
に有効であるが、1.5%を超えると、合金が硬くなり
すぎ、金型寿命を低下させるので好ましくない。よっ
て、Mnの成分範囲は、1.5%以下とするが、打ち抜
き性改善の観点からは、0.1〜1.5%とするのが好
ましい。
(Mn): Mn is usually added for the purpose of improving deoxidation and hot workability. As a result, MnO-based inclusions, MnS-based inclusions, or further react with Si to form Mn-Si-O-based inclusions. Mn is also Si
Similarly, since the Fe-Ni alloy is hardened, it is effective for improving the punchability, but if it exceeds 1.5%, the alloy becomes too hard and the die life is shortened, which is not preferable. Therefore, the content range of Mn is 1.5% or less, but it is preferably 0.1 to 1.5% from the viewpoint of improving punchability.

【0013】(Al):Alは通常脱酸の目的で添加さ
れる。この結果、Al23 系介在物が形成される。A
lもFe−Ni合金を硬くするので、打ち抜き性向上に
有効であるが、0.2%を超えると合金が硬くなりす
ぎ、金型寿命を低下させるので好ましくない。好ましい
Al成分範囲は0.005〜0.2%である。
(Al): Al is usually added for the purpose of deoxidation. As a result, Al 2 O 3 -based inclusions are formed. A
l is also effective for improving the punching property because it hardens the Fe—Ni alloy, but if it exceeds 0.2%, the alloy becomes too hard and the life of the mold is shortened. A preferable Al component range is 0.005 to 0.2%.

【0014】(O):Oは通常有害な成分と考えられて
おり、従来の電子銃部品用Fe−Ni合金では0.00
5%未満にまで脱酸されていた。ところが、今回、0.
005%以上含有させるとプレス打ち抜き性が向上する
ことが明らかになった。しかし、0.020%以上にな
ると打ち抜き破面が粗くなりすぎるので、Oの成分範囲
は0.005〜0.020%とした。
(O): O is generally considered to be a harmful component, and is 0.00 in the conventional Fe-Ni alloy for electron gun parts.
It was deoxidized to less than 5%. However, this time, 0.
It was clarified that the press punching property was improved when the content was 005% or more. However, when the content is 0.020% or more, the punched fracture surface becomes too rough, so the range of O component was made 0.005 to 0.020%.

【0015】(S):Sは耐食性を劣化させる元素で、
0.002%以上含有すると、環境によっては、例えば
海上を船舶で運搬される場合や海岸に近い倉庫で保管さ
れる場合、錆が発生するといった問題を起こすことがあ
る。そこで、Sの成分範囲は0.002%未満とした。
(S): S is an element that deteriorates corrosion resistance,
If it is contained in an amount of 0.002% or more, depending on the environment, for example, when it is transported by sea on a ship or stored in a warehouse near the coast, rust may occur. Therefore, the component range of S is set to less than 0.002%.

【0016】上記以外の成分は不可避的不純物とFeで
ある。不純物は、炭素、リン、銅などの通常の不純物で
あって、膨張特性にとって有害であるほか、それ自体で
はプレス打ち抜き性には有害であるが、P25 、Cu
2 Sなど微細な非金属介在物として存在してプレス打ち
抜き性を改善する。これらの不純物元素の量は通常総計
で10〜2000ppm程度であることが好ましい。
Components other than the above are unavoidable impurities and Fe. Impurities are ordinary impurities such as carbon, phosphorus, and copper, which are harmful to the expansion characteristics, and are harmful to the press punchability by themselves, but are not limited to P 2 O 5 , Cu.
Exists as fine non-metallic inclusions such as 2 S to improve press punchability. It is preferable that the total amount of these impurity elements is generally about 10 to 2000 ppm.

【0017】本発明者等が行った電子銃部品用Fe−N
i合金のプレス打ち抜き性に及ぼす成分の影響に関する
研究によって、酸素量を適切な範囲に(従来の常識では
多すぎる量と考えられるが)制御することによって打ち
抜き性の良好な材料が得られることが明らかになった。
この酸素は主として介在物として材料中に存在し、打ち
抜き性を向上させる。すなわち、打ち抜き時、せん断変
形が進むにつれて刃先近傍の応力が高くなり、ついには
破壊が始まるわけであるが、この破壊は介在物を起点と
して起こるため、介在物の多い材料のほうが容易に破壊
しやすく、結果として破断面比率の高い、バリの小さい
プレス破面が得られるのである。
Fe—N for electron gun parts conducted by the present inventors
By studying the effect of components on the press punchability of i alloy, it has been found that a material with good punchability can be obtained by controlling the oxygen content within an appropriate range (although it is considered to be too much in the conventional wisdom). It was revealed.
This oxygen mainly exists in the material as inclusions and improves punchability. That is, at the time of punching, the stress near the cutting edge increases as the shear deformation progresses, and eventually fracture begins.However, since this fracture starts from inclusions, a material with many inclusions is more likely to fracture. It is easy, and as a result, a press fracture surface with a high fracture surface ratio and a small burr can be obtained.

【0018】製造に当たっては、上述した所定の成分組
成に溶製したFe−Ni合金インゴットを均質化焼鈍
後、熱間圧延し、焼鈍と冷間圧延を繰り返して最終厚さ
とし、最終焼鈍して板厚0.05〜0.5mm程度のプ
レス打ち抜き用素材に仕上げられる。電子銃部品は、素
材をコイニングを経てあるいは経ずにプレス打ち抜き加
工することにより完成させる。
In the production, the Fe-Ni alloy ingot melted in the above-mentioned predetermined composition is homogenized and annealed, and then hot-rolled, and annealing and cold-rolling are repeated to obtain a final thickness, and finally annealed. A material for press punching with a thickness of about 0.05 to 0.5 mm is finished. The electron gun parts are completed by stamping the material with or without coining.

【0019】[0019]

【実施例】以下、実施例及び比較例を示し本発明を説明
する。Fe−42重量%Niを主成分とするFe−Ni
合金を真空度が10-5Torr〜10-1Torrの範囲
の誘導型真空溶解炉により約6kgのインゴットに溶製
した。原料としては、高純度電解鉄、プレス加工用鋼板
スクラップ、硫黄快削鋼、リムド鋼スクラップ、電解ニ
ッケル、電解マンガンなどを種々の割合で混合すること
により原料中に含まれるS、O等の量を変化させた。
The present invention will be described below with reference to examples and comparative examples. Fe-42 wt% Ni-based Fe-Ni
The alloy was melted into an ingot of about 6 kg by an induction type vacuum melting furnace having a vacuum degree in the range of 10 -5 Torr to 10 -1 Torr. As the raw material, high-purity electrolytic iron, steel plate scrap for press working, sulfur free-cutting steel, rimmed steel scrap, electrolytic nickel, electrolytic manganese, etc. are mixed in various proportions, and the amount of S, O, etc. contained in the raw material is mixed. Was changed.

【0020】各インゴットは、均質化焼鈍後1200℃
で熱間圧延し4mmの厚さの板にした。これを焼鈍し、
酸洗後1.5mm厚に冷間圧延し、光輝焼鈍後0.4m
m板厚に冷間圧延した。次に、これを真空中にて750
℃で1時間焼鈍し供試材とした。
Each ingot was heated to 1200 ° C. after homogenization annealing.
Was hot rolled into a plate having a thickness of 4 mm. Annealed this,
After pickling, cold rolling to 1.5mm thickness, 0.4m after bright annealing
Cold rolled to a thickness of m. Next, this is 750 in vacuum.
It was annealed at ℃ for 1 hour to make a test material.

【0021】打ち抜き性の評価は、供試材に30トンプ
レスにより直径0.4mmの孔を3mm間隔で10個あ
け、その際に発生したバリの最大厚さ、最大高さ及び打
ち抜き面の破断面比率を求めた。また、5%塩水による
塩水噴霧試験を35℃で24時間行い、錆の発生を調べ
た。表1に本発明例及び比較例の化学成分、最大バリ厚
さ、最大バリ高さ、破断面比率及び塩水噴霧試験結果を
示す。ここで、バリ厚さとは、加工した孔をバリ側から
観察した場合のバリの孔外周からの距離(突出長さ)で
ある。バリ高さとは、加工した孔を孔断面から観察した
場合のバリの孔下面からの距離(突出長さ)である。破
断面比率(%)とは、(破断面厚さ/板厚)×100に
より定義される。
The punching property was evaluated by punching 10 holes with a diameter of 0.4 mm at intervals of 3 mm in a test material with a 30-ton press, and the maximum thickness and height of the burr generated at that time and the breaking of the punched surface. The cross-sectional ratio was calculated. Further, a salt spray test with 5% salt water was performed at 35 ° C. for 24 hours to examine the occurrence of rust. Table 1 shows the chemical composition, maximum burr thickness, maximum burr height, fracture surface ratio and salt spray test results of the examples of the present invention and comparative examples. Here, the burr thickness is the distance (protrusion length) from the outer periphery of the burr when the processed hole is observed from the burr side. The burr height is the distance (projection length) from the bottom surface of the burr when the processed hole is observed from the hole cross section. The fracture surface ratio (%) is defined by (fracture surface thickness / plate thickness) × 100.

【0022】[0022]

【表1】 [Table 1]

【0023】また、図3に、プレス打ち抜き加工した孔
をバリ側から観察した写真を示す。(a)は本発明例で
あり、そして(b)は比較例である。
Further, FIG. 3 shows a photograph of a hole punched by press, which is observed from the burr side. (A) is an example of the present invention, and (b) is a comparative example.

【0024】表1及び図3から明らかなように、本発明
例はいずれもO含有量の少ない比較例No.5に比べ最
大バリ厚さ及び最大バリ高さが小さく、打ち抜き加工時
のバリ発生が著しく抑制されている。さらに、比較例N
o.5に比べ本発明例はいずれも破断面比率が高く、打
ち抜き性が向上している。比較例No.6は、O含有量
が多すぎるため破断面が粗くなり好ましくない。比較例
No.7及びNo.8は、S含有量が本発明の範囲を超
えているため塩水噴霧試験により錆が発生し好ましくな
い。こうして、本発明は、電子銃部品用Fe−Ni合金
の耐食性を劣化させることなく、破断面の状態を粗くな
らないよう良好に維持したまま、最大バリ厚さを22μ
m以下に、最大バリ高さを8μm以下にそして破断面比
率を20%以上にすることができる。
As can be seen from Table 1 and FIG. 3, Comparative Examples Nos. Compared with No. 5, the maximum burr thickness and the maximum burr height are smaller, and burr generation during punching is significantly suppressed. Furthermore, Comparative Example N
o. Compared with No. 5, in all the examples of the present invention, the fracture surface ratio was high and the punchability was improved. Comparative Example No. No. 6 is not preferable because the fracture surface becomes rough because the O content is too large. Comparative Example No. 7 and No. 7 No. 8 is not preferable because S content exceeds the range of the present invention and rust occurs in the salt spray test. Thus, according to the present invention, the maximum burr thickness is 22 μm, while maintaining the corrosion resistance of the Fe—Ni alloy for electron gun parts to be good and the fracture surface state not being roughened.
The maximum burr height can be 8 m or less and the fracture surface ratio can be 20% or more.

【0025】[0025]

【発明の効果】以上のように、プレス打ち抜き性を著し
く改善した本発明の電子銃部品用Fe−Ni合金によれ
ば、例えば、バリからの異常放電による電子銃の耐電圧
の低下といった問題を解消し、寸法精度を高め、近年の
ブラウン管の大型化、高品質化に対応できる優れた電子
銃部品を得ることができる。
As described above, according to the Fe-Ni alloy for electron gun parts of the present invention in which the punching property is remarkably improved, for example, there is a problem that the withstand voltage of the electron gun is lowered due to abnormal discharge from burrs. It is possible to obtain an excellent electron gun component that can be solved, the dimensional accuracy can be improved, and the cathode ray tube of recent years can be increased in size and quality.

【図面の簡単な説明】[Brief description of drawings]

【図1】シャドウマスクブラウン管の断面図である。FIG. 1 is a sectional view of a shadow mask cathode ray tube.

【図2】電子銃の電極であり、本発明に係る電子銃打ち
抜き加工部品の一例を示す斜視図である。
FIG. 2 is a perspective view showing an example of an electron gun electrode, which is an example of an electron gun punched component according to the present invention.

【図3】実施例(a)及び比較例(b)の打ち抜きによ
るバリの形状を示し、プレス加工性を説明するための写
真(倍率100倍)である。
FIG. 3 is a photograph showing the shape of a burr by punching in Example (a) and Comparative Example (b) and illustrating press workability (magnification: 100 times).

【符号の説明】[Explanation of symbols]

1 パネル 2 蛍光膜 3 電子ビーム 4 電子銃 5 偏向ヨーク 6 シャドウマスク 10 電極 10a、10b、10c 微小孔 10e 先端縁 B バリ 1 panel 2 fluorescent film 3 electron beam 4 electron gun 5 deflection yoke 6 shadow mask 10 electrodes 10a, 10b, 10c small holes 10e tip edge B burr

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 重量%で、Ni:30〜55%、Si:
0.5%以下、Mn:1.5%以下、Al:0.2%以
下、そしてO:0.005〜0.020%を含み、S:
0.002%未満とし、残部が実質的にFe及び不可避
的不純物よりなる電子銃部品用Fe−Ni合金。
1. Ni: 30 to 55% by weight, Si:
0.5% or less, Mn: 1.5% or less, Al: 0.2% or less, and O: 0.005 to 0.020%, S:
Fe-Ni alloy for electron gun parts, which is less than 0.002% and the balance is substantially Fe and unavoidable impurities.
【請求項2】 重量%で、Ni:30〜55%、Si:
0.5%以下、Mn:1.5%以下、Al:0.2%以
下、そしてO:0.005〜0.020%を含み、S:
0.002%未満とし、残部が実質的にFe及び不可避
的不純物よりなるFe−Ni合金製電子銃プレス打ち抜
き加工部品。
2. By weight%, Ni: 30-55%, Si:
0.5% or less, Mn: 1.5% or less, Al: 0.2% or less, and O: 0.005 to 0.020%, S:
An electron gun press-punched part made of an Fe-Ni alloy containing less than 0.002% and the balance substantially consisting of Fe and unavoidable impurities.
【請求項3】 重量%で、Ni:30〜55%、Si:
0.5%以下、Mn:1.5%以下、Al:0.2%以
下、そしてO:0.005〜0.020%を含み、S:
0.002%未満とし、残部が実質的にFe及び不可避
的不純物よりなるFe−Ni合金製電子銃電極。
3. Ni: 30 to 55% by weight, Si:
0.5% or less, Mn: 1.5% or less, Al: 0.2% or less, and O: 0.005 to 0.020%, S:
An electron gun electrode made of Fe-Ni alloy, which is less than 0.002% and the balance is substantially Fe and unavoidable impurities.
JP8065102A 1996-02-28 1996-02-28 Iron-nickel alloy for electron gun part, and electron gun press punched part Withdrawn JPH09235655A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8065102A JPH09235655A (en) 1996-02-28 1996-02-28 Iron-nickel alloy for electron gun part, and electron gun press punched part
TW086101706A TW429269B (en) 1996-02-28 1997-02-14 Fe-Ni alloys for electron gun parts and punched electron gun parts
CN97102899A CN1057571C (en) 1996-02-28 1997-02-28 Fe-Ni alloys for electron gun parts and punched electron gun parts
KR1019970006610A KR100210570B1 (en) 1996-02-28 1997-02-28 Fe-ni alloys for electron gun parts and punched electron gun parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8065102A JPH09235655A (en) 1996-02-28 1996-02-28 Iron-nickel alloy for electron gun part, and electron gun press punched part

Publications (1)

Publication Number Publication Date
JPH09235655A true JPH09235655A (en) 1997-09-09

Family

ID=13277217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8065102A Withdrawn JPH09235655A (en) 1996-02-28 1996-02-28 Iron-nickel alloy for electron gun part, and electron gun press punched part

Country Status (1)

Country Link
JP (1) JPH09235655A (en)

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