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WO1999047718A1 - Material for aperture grill for color picture tube, process for making the same, aperture grill, and picture tube - Google Patents

Material for aperture grill for color picture tube, process for making the same, aperture grill, and picture tube Download PDF

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Publication number
WO1999047718A1
WO1999047718A1 PCT/JP1998/001197 JP9801197W WO9947718A1 WO 1999047718 A1 WO1999047718 A1 WO 1999047718A1 JP 9801197 W JP9801197 W JP 9801197W WO 9947718 A1 WO9947718 A1 WO 9947718A1
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WO
WIPO (PCT)
Prior art keywords
weight
aperture
picture tube
low
rolled
Prior art date
Application number
PCT/JP1998/001197
Other languages
French (fr)
Japanese (ja)
Inventor
Hironao Okayama
Tsuneyuki Ide
Yasuo Tahara
Hiroshi Fujishige
Akira Ikeda
Setsuo Takaki
Original Assignee
Toyo Kohan Co., Ltd.
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 Toyo Kohan Co., Ltd. filed Critical Toyo Kohan Co., Ltd.
Priority to AU64201/98A priority Critical patent/AU6420198A/en
Priority to PCT/JP1998/001197 priority patent/WO1999047718A1/en
Priority to JP2000536899A priority patent/JP3475213B2/en
Publication of WO1999047718A1 publication Critical patent/WO1999047718A1/en

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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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0268—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment between cold rolling steps
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0727—Aperture plate
    • H01J2229/0733—Aperture plate characterised by the material

Definitions

  • the present invention relates to a material for an aperture grill for a color picture tube, a method for producing the same, an aperture grill, and a color picture tube incorporating the same.
  • a material for an aperture grill for a color picture tube having excellent tensile strength and high-temperature creep strength and excellent magnetic properties a method for producing the same, an aperture grill and a color picture tube incorporating the same About.
  • Aperture one grille for use in Chikarara one picture tube since it is welded to the frame in a state loaded with a large tension force during its manufacture, color one picture tube for aperture Ichigu Lil material for at least 6 0 kgf / mm 2 It is required to have a tensile strength of For this reason, low-carbon steel sheets that have been hardened and reinforced are used as materials for apertures and grilles for color picture tubes currently used.
  • heat treatment for blackening is performed after being welded to the frame.However, in order to maintain a state where tension is applied without loosening the tapes constituting the aperture grille after blackening, The heat treatment is performed at 455 ° C, which is below the recrystallization temperature of steel, for a short time of about 15 minutes. However, the recovery phenomenon cannot be avoided under these blackening heat treatment conditions, and the recovery causes the tape to stretch, causing the tape to twist or break. Therefore, as the material for the aperture one grill color one picture tube, and 6 0 kgf / mm 2 or more tensile strength, extension beauty does not occur blackening heat treatment 4 5 5 ° CXI 5 minutes, i.e. 3 0 kgf Z It is required to have a creep strength such that the elongation when a tensile stress of mm 2 is applied is 0.4% or less.
  • the empty picture tube consists of an electron gun and a phosphor screen that converts the electron beam into an image.
  • the inside of the picture tube is covered with a magnetic shielding material.
  • the aperture grille must also function as this magnetic shielding material, and has a large magnetic flux density (B r) and a small coercive force (H e) as its magnetic properties.
  • B r magnetic flux density
  • H e coercive force
  • a material having a large ratio (BrZHc) between the coercive force and the coercive force is required.
  • the magnetic flux density is as small as 8 kilogauss (kG) or less.
  • the coercive force is as large as about 5 oersteds (0e), and therefore the Br (kG) / Hc (0e) force is as small as about 1.6, which is inferior as a magnetic shield material.
  • An object of the present invention is to provide a material for an aperture and a grill for a color picture tube, which has excellent tensile strength and high-temperature creep strength, and also has magnetic properties superior to those of existing materials, and a method for producing the same. Disclosure of the invention
  • the invention of claim 1 relates to a material for an aperture and a grill for a color picture tube made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu.
  • the invention of claim 2 relates to a material for an aperture and a grill for a color picture tube made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P.
  • the invention according to claim 3 is characterized in that a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu is cold-rolled and then aged at a temperature of 300 to 700 ° C.
  • the present invention relates to a method for manufacturing a material for an aperture and a grill for a picture tube.
  • the invention according to claim 4 is characterized in that after cold-rolling a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P, at a temperature of 300 to 700 ° C.
  • the present invention relates to a method for producing a material for an aperture daryl for a color picture tube, which is characterized by being subjected to aging treatment.
  • the invention according to claim 5 is characterized in that a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu is cold-rolled, then subjected to intermediate annealing at a temperature of 500 to 800 ° C, and then to secondary cold-rolling,
  • the present invention relates to a method for producing a material for an aperture daryl of an aperture for a color picture tube, which is characterized by being subjected to aging treatment at a temperature of 300 to 700 ° C thereafter.
  • the invention according to claim 6 is a method of cold rolling a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of ⁇ ′′ and 0.001 to 0.4% by weight, followed by intermediate annealing at a temperature of 500 to 800 ° C.
  • the present invention relates to a method for producing a material for an aperture and a daryl of an aperture for a color picture tube, which is subjected to secondary cold rolling after aging and then aging at a temperature of 300 to 700 ° C.
  • the invention of claim 7 relates to an aperture grill made of a low-carbon steel sheet containing 0.05 to 2.5% by weight of Cu, and the invention of claim 8 relates to 0.05 to 2.5% by weight of Cu. It relates to an avatar grill made of a low-carbon steel sheet containing 0.001 to 0.4% by weight of P.
  • the invention of claim 9 relates to a color picture tube incorporating an aperture grill for a picture tube made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu.
  • the present invention relates to a color picture tube incorporating an aperture daryl for a color picture tube containing 0.05 to 2.5% by weight of 0.001 to 0.4% by weight.
  • a fine Cu phase ( ⁇ phase) of the order of nanometers (rim) is precipitated by aging treatment in an ultra-low carbon steel to which Cu is added, or ⁇ is further added.
  • the combined use of solid solution strengthening of ⁇ secures a tensile strength of 60 kgf / mm 2 or more, and is excellent in Br (kG) / Hc (Oe) ⁇ 2.5 by annealing by aging treatment. It was found that excellent magnetic properties were obtained.
  • the ultra-low carbon steel used as the material of the aperture grille for the color picture tube of the present invention is decarburized and denitrified using a vacuum degassing method to reduce carbides and nitrides in the steel, Alternatively, those in which the growth of crystal grains is promoted in the steps of hot rolling and continuous annealing are preferable. Furthermore, carbides and nitrides finely dispersed in steel hinder domain wall movement and degrade magnetic properties. Therefore, it is necessary to limit the elements contained in steel in advance and reduce them as much as possible. First, the elements added to the steel used for the material of the aperture grill for the color picture tube of the present invention and the limitation of the amount added will be described.
  • the upper limit of the amount of C added is limited to 0.01% by weight.
  • the lower limit is preferable as long as it can be practically reduced by vacuum degassing.
  • Mn must be added to combine with S in steel to fix S contained in steel as MnS and prevent hot brittleness. In order to improve the characteristics, it is preferable that the addition amount is small, and the addition amount is 0.5% by weight or less.
  • the addition amount should be 0.3% by weight or less.
  • S is preferably small from the viewpoint of crystal grain growth, and the addition amount is preferably 0.05% by weight or less.
  • N is preferably added in an amount of 0.05% by weight or less.
  • the larger the amount added the larger the amount of ⁇ phase precipitated during aging treatment And the yield strength and creep strength are greatly increased.
  • the S phase is a fine precipitate of the order of nanometers, unlike a precipitate of the order of microns, it hardly hinders the movement of the domain wall, and the degree of deterioration of the magnetic properties is extremely small. Therefore, by increasing the amount of Cu added, the yield strength and the creep strength can be increased without deteriorating the magnetic properties.
  • the amount is less than 0.05% by weight, a sufficient effect of increasing the strength cannot be obtained.
  • the addition amount is too large, the amount of precipitates becomes large and the magnetic properties deteriorate, so the addition amount is preferably 2.5% by weight or less.
  • P is effective in increasing the strength by solid solution strengthening, and the addition of P greatly increases the tensile strength and creep strength. Therefore, solid solution strengthening by P can be used together. Sufficient strength can be obtained with an addition amount of 0.001% by weight or more. However, if the addition amount exceeds 0.4%, mixed grains due to segregation will occur. The following addition amount is used.
  • ultra-low carbon steel containing the above-mentioned chemical components produced by vacuum melting or vacuum degassing is hot-rolled, it is pickled to remove an oxide film formed in the hot-rolling process. Subsequently, the sheet is cold-rolled to a sheet thickness of 0.035 to 0.2 mm.
  • aging treatment is performed at a temperature of 300 to 700 ° C. for 10 minutes to 20 hours. When the amount of added Cu or Cu and P is large, the recrystallization temperature rises, so that the aging treatment may be carried out at around the upper limit of 700 ° C., but preferably the precipitation of Cu is performed.
  • the aging treatment is preferably performed at a temperature of 450 to 550 ° C.
  • the aging temperature is lower than 300 ° C, the ⁇ phase does not sufficiently precipitate and the required tensile strength cannot be obtained.
  • aging at a temperature exceeding 700 ° C causes overaging, and the ⁇ phase re-dissolves in the steel to lower the tensile yield strength.
  • the aging treatment depends on the heating temperature and heating time. Either furnace or continuous annealing furnace can be used.
  • the above ultra-low carbon steel is hot-rolled, pickled, cold-rolled to a thickness of 0.1 to 0.6 mm, and then annealed at a temperature of 500 to 800 ° C.
  • secondary cold rolling may be performed to a final thickness of 0.035 to 0.2 mm, and then the above aging treatment may be performed. If the annealing temperature is lower than 500 ° C, the softening becomes insufficient.If the above aging treatment is performed after secondary cold rolling, the tensile strength becomes extremely high.On the other hand, if the annealing temperature exceeds 800 ° C, the Even if the above aging treatment is performed after the next cold rolling, a desired tensile strength cannot be obtained.
  • a slab obtained by vacuum degassing nine types of steels (A to I) having the chemical compositions shown in Table 1 was hot-rolled into hot-rolled sheets of 2.5 mm. These hot-rolled sheets were subjected to sulfuric acid washing and then cold-rolled to obtain two types of cold-rolled sheets having a thickness of 0.1 mm and 0.3 mm. After that, the cold-rolled sheet with a thickness of 0.1 mm is directly aged, the cold-rolled sheet with a thickness of 0.3 mm is subjected to intermediate annealing, and the secondary cold-rolling is performed to a thickness of 0.1 mm. After rolling, an aging treatment was performed.
  • the specimen obtained in this way was measured for magnetic flux density and coercive force by applying a magnetic field of 1 ° Elsted using a simple eBstein-type magnetometer, and the B r (kG) / H c (O e) was determined. Further, the tensile strength at Te Nshiron, creep strength is used creep test machine (manufactured by Tokai Seisakusho) under load stress 30 kgf ZMM 2, elongation when held for 15 minutes at 455 ° C in the atmosphere ( %) was measured and evaluated. Table 2 shows the intermediate annealing and aging conditions and the characteristics of the test materials.
  • the material for aperture daryl of claim 1 is made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu, and the material for aperture grill of claim 2 contains 0.05 to 2.5% by weight of Cu and P Since it is made of a low carbon steel sheet containing 0.001 to 0.4% by weight, it has excellent magnetic properties and strength.
  • the method according to claim 3 is to cold-roll a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and then to perform aging treatment at a temperature of 300 to 700 ° C.
  • the method according to claim 5 is to cold-roll a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu, then to subject it to intermediate annealing at a temperature of 500 to 800 ° C, and then to perform secondary cold rolling. And then aging at 300-700 ° C,
  • the method according to claim 6 is characterized in that a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P is cold-rolled, and then at a temperature of 500 to 800 ° C. Since it is subjected to intermediate annealing and then to secondary cold rolling, and then to aging at a temperature of 300 to 70 CTC, it has excellent tensile strength and excellent high temperature creep strength by these manufacturing methods, and Apertures for empty picture tubes with excellent magnetic properties-Materials for grills can be manufactured.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

A material for an aperture grill for a color picture tube having excellent yield and high-temperature creep strengths and magnetic characteristics superior to those of the existing material; a process for making the material; an aperture grill; and a picture tube having the aperture grill assembled therein. A low-carbon steel sheet containing 0.05 to 2.5 wt.% of Cu, or 0.05 to 2.5 wt.% of Cu and 0.001 to 0.4 wt.% of P is cold rolled and then aged at 300 to 700 °C, or cold rolled, intermediately annealed at 500 to 800 °C, secondarily cold rolled, and then aged.

Description

明 細  Details
カラ一受像管用アパーチャ一グリル用素材、 その製造方法、 アパーチャ一グリル 及び受像管 Material for aperture grill for empty picture tube, method of manufacturing the same, aperture grill and picture tube
背景技術 Background art
本発明はカラ一受像管用アパーチャ一グリル用素材、 その製造方法、 ァパーチ ャ一グリル及びそれを組み込んだカラ一受像管に関する。  The present invention relates to a material for an aperture grill for a color picture tube, a method for producing the same, an aperture grill, and a color picture tube incorporating the same.
より詳細には優れた引張強度および高温クリ一プ強度を有するとともに、 優れ た磁気特性を有するカラ一受像管用アパーチャ一グリル用素材、 その製造方法、 アパーチャ—グリル及びそれを組み込んだカラ—受像管に関する。 力ラ一受像管に使用されるアパーチャ一グリルは、 その製造に際して大きな張 力を負荷した状態でフレームに溶接されるため、 カラ一受像管用アパーチャ一グ リル用素材は少なくとも 6 0 k g f /m m 2の引張強度を有していることが必要 とされている。 そのため現在使用されているカラ一受像管用アパーチャ一グリル 用素材としては、 強加工を施して加工強化した低炭素鋼板が使用されている。 さらに、 フレームに溶接された後黒化するための熱処理が施されるが、 黒化後 のアパーチャ一グリルを構成している各テープが弛むことなく張力が負荷された 状態を保持するために、 熱処理は鋼の再結晶温度以下の 4 5 5 °Cで 1 5分程度の 短時間で実施されている。 しかし、 この黒化熱処理条件では回復現象を回避する ことができず、 回復によりテープに延びが生じ、 テープが捻れたり切れたりする 原因となっている。 このため、 カラ一受像管用アパーチャ一グリル用素材として は、 6 0 k g f /m m 2以上の引張強度と、 4 5 5 °C X I 5分の黒化熱処理で延 びが生じない、 すなわち 3 0 k g f Z m m 2の引っ張り応力を負荷した際の伸び が 0 . 4 %以下であるクリープ強度を有していることが必要とされる。 More specifically, a material for an aperture grill for a color picture tube having excellent tensile strength and high-temperature creep strength and excellent magnetic properties, a method for producing the same, an aperture grill and a color picture tube incorporating the same About. Aperture one grille for use in Chikarara one picture tube, since it is welded to the frame in a state loaded with a large tension force during its manufacture, color one picture tube for aperture Ichigu Lil material for at least 6 0 kgf / mm 2 It is required to have a tensile strength of For this reason, low-carbon steel sheets that have been hardened and reinforced are used as materials for apertures and grilles for color picture tubes currently used. Furthermore, heat treatment for blackening is performed after being welded to the frame.However, in order to maintain a state where tension is applied without loosening the tapes constituting the aperture grille after blackening, The heat treatment is performed at 455 ° C, which is below the recrystallization temperature of steel, for a short time of about 15 minutes. However, the recovery phenomenon cannot be avoided under these blackening heat treatment conditions, and the recovery causes the tape to stretch, causing the tape to twist or break. Therefore, as the material for the aperture one grill color one picture tube, and 6 0 kgf / mm 2 or more tensile strength, extension beauty does not occur blackening heat treatment 4 5 5 ° CXI 5 minutes, i.e. 3 0 kgf Z It is required to have a creep strength such that the elongation when a tensile stress of mm 2 is applied is 0.4% or less.
カラ一受像管は、 電子銃と電子ビームを映像に換える蛍光面から構成されてお り、 電子ビームが地磁気により偏向されることを防止するため、 受像管内部は磁 気シールド材で被覆されている。 アパーチャ一グリルは、 この磁気シールド材と しての作用をも有している必要があり、 磁気特性としての磁束密度（B r ) が大 きく、 保磁力 （H e ) が小さい、 すなわち磁束密度と保磁力の比（B rZH c ) が大きい材料が求められる。 しかし、 上記のように高い降伏強度を得るために強 加工が施され、 かつ黒化熱処理も再結晶温度以下で行われる低炭素鋼板において は、 磁束密度が 8キロガウス （ kG) 以下と小さく、 また保磁力が約 5エルステ ッド （ 0 e ) と大きく、 したがって B r ( k G ) /H c ( 0 e ) 力 約 1.6と小 さく、 磁気シールド材として劣っている。 The empty picture tube consists of an electron gun and a phosphor screen that converts the electron beam into an image. In order to prevent the electron beam from being deflected by geomagnetism, the inside of the picture tube is covered with a magnetic shielding material. The aperture grille must also function as this magnetic shielding material, and has a large magnetic flux density (B r) and a small coercive force (H e) as its magnetic properties. A material having a large ratio (BrZHc) between the coercive force and the coercive force is required. However, in a low-carbon steel sheet that is subjected to strong working to obtain a high yield strength as described above and that is also subjected to blackening heat treatment at a temperature lower than the recrystallization temperature, the magnetic flux density is as small as 8 kilogauss (kG) or less. The coercive force is as large as about 5 oersteds (0e), and therefore the Br (kG) / Hc (0e) force is as small as about 1.6, which is inferior as a magnetic shield material.
従来、 低炭素鋼板の引張降伏強度を向上させる方法としては、 Cや Nなどによ る固溶強化法があるが、 鋼中の Cや Nの量が多くなると炭化物や窒化物が増加し、 磁壁の移動が妨げられるようになり、 磁気特性が劣化する。 また、 クリープ強度 を向上させる方法として鋼中に炭化物などを析出させる方法があるが、 これらの 析出物のほとんどは粒径がミクロンオーダ一で大きく、 これらは磁壁の移動を妨 害し、 磁気特性を大きく劣化させるため、 このような方法は、 現行のカラ一受像 管用アパーチャ一グリル用の素材の製造方法として適用されていない。  Conventionally, as a method of improving the tensile yield strength of low carbon steel sheets, there is a solid solution strengthening method using C or N, but when the amount of C or N in the steel increases, carbides and nitrides increase, The movement of the domain wall is hindered, and the magnetic properties deteriorate. In addition, as a method of improving the creep strength, there is a method of precipitating carbides and the like in steel, but most of these precipitates have a large particle size on the order of microns, which hinder the movement of the domain wall and reduce the magnetic properties. Such a method has not been applied as a current method for producing a material for an aperture and a grill for a color picture tube because of significant deterioration.
本発明は、 優れた引張強度および高温クリープ強度を有するとともに、 現行材 よりも優れた磁気特性を有するカラ一受像管用アパーチャ一グリル用素材および その製造方法を提供することを課題とする。 発明の開示  An object of the present invention is to provide a material for an aperture and a grill for a color picture tube, which has excellent tensile strength and high-temperature creep strength, and also has magnetic properties superior to those of existing materials, and a method for producing the same. Disclosure of the invention
請求項 1の発明は、 Cuを 0.05〜2.5重量％含有する低炭素鋼板からなる カラ一受像管用アパーチャ一グリル用素材に関するものである。  The invention of claim 1 relates to a material for an aperture and a grill for a color picture tube made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu.
請求項 2の発明は、 Cuを 0.05〜2.5重量％および Pを 0.001〜0.4 重量％含有する低炭素鋼板からなるカラー受像管用アパーチャ一グリル用素材に 関するものである。 請求項 3の発明は、 C uを 0.05〜2.5重量％含有する低炭素熱延鋼帯を冷 間圧延した後、 300〜700°Cの温度で時効処理してなることを特徴とする力 ラー受像管用アパーチャ一グリル用素材の製造方法に関するものである。 The invention of claim 2 relates to a material for an aperture and a grill for a color picture tube made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P. The invention according to claim 3 is characterized in that a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu is cold-rolled and then aged at a temperature of 300 to 700 ° C. The present invention relates to a method for manufacturing a material for an aperture and a grill for a picture tube.
請求項 4の発明は、 C uを0· 05〜2.5重量％ぉょびPを0.001〜0.4 重量％含有する低炭素熱延鋼帯を冷間圧延した後、 300〜700°Cの温度で時 効処理してなることを特徴とするカラー受像管用アパーチャ一ダリル用素材の製 造方法に関するものである。  The invention according to claim 4 is characterized in that after cold-rolling a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P, at a temperature of 300 to 700 ° C. The present invention relates to a method for producing a material for an aperture daryl for a color picture tube, which is characterized by being subjected to aging treatment.
請求項 5の発明は、 Cuを 0.05〜2.5重量％含有する低炭素熱延鋼帯を冷 間圧延し、 次いで 500~800°Cの温度で中間焼鈍を施した後二次冷間圧延し、 その後 300〜700°Cの温度で時効処理してなることを特徴とするカラー受像 管用アパーチャ一ダリル用素材の製造方法に関するものである。  The invention according to claim 5 is characterized in that a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu is cold-rolled, then subjected to intermediate annealing at a temperature of 500 to 800 ° C, and then to secondary cold-rolling, The present invention relates to a method for producing a material for an aperture daryl of an aperture for a color picture tube, which is characterized by being subjected to aging treatment at a temperature of 300 to 700 ° C thereafter.
請求項 6の発明は、 〇"を0.05〜2.5重量％ぉょび？を0.001〜0.4 重量％含有する低炭素熱延鋼帯を冷間圧延し、 次いで 500〜800°Cの温度で 中間焼鈍を施した後二次冷間圧延し、 その後 300〜 700 °Cの温度で時効処理 してなることを特徴とするカラ一受像管用アパーチャ一ダリル用素材の製造方法 に関するものである。  The invention according to claim 6 is a method of cold rolling a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of 〇 ″ and 0.001 to 0.4% by weight, followed by intermediate annealing at a temperature of 500 to 800 ° C. The present invention relates to a method for producing a material for an aperture and a daryl of an aperture for a color picture tube, which is subjected to secondary cold rolling after aging and then aging at a temperature of 300 to 700 ° C.
請求項 7の発明は、 C uを 0.05〜2.5重量％含有する低炭素鋼板からなるァ パ一チヤ一グリルに関するものであり、 請求項 8の発明は、 Cuを0.05〜2. 5重量％および Pを 0.001〜 0.4重量％含有する低炭素鋼板からなるアバ一 チヤ一グリルに関するものである。 The invention of claim 7 relates to an aperture grill made of a low-carbon steel sheet containing 0.05 to 2.5% by weight of Cu, and the invention of claim 8 relates to 0.05 to 2.5% by weight of Cu. It relates to an avatar grill made of a low-carbon steel sheet containing 0.001 to 0.4% by weight of P.
請求項 9の発明は、 Cuを 0.05〜2.5重量％含有する低炭素鋼板からなる力 ラ一受像管用アパーチャ一グリルを組み込んだカラ一受像管に関するものであり、 請求項 10の発明は、 じ"を0.05〜2.5重量％ぉょび を0.001〜0.4 重量％含有するカラ一受像管用アパーチャ一ダリルを組み込んだカラー受像管 に関するものである。 発明を実施するための最良の形態 The invention of claim 9 relates to a color picture tube incorporating an aperture grill for a picture tube made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu. The present invention relates to a color picture tube incorporating an aperture daryl for a color picture tube containing 0.05 to 2.5% by weight of 0.001 to 0.4% by weight. BEST MODE FOR CARRYING OUT THE INVENTION
本発明においては、 C uを添加した極低炭素鋼中に、 時効処理によってナノメ —タ一 （ ri m ) オーダ一の微細な C u相 （ ε相） を析出させ、 またはさらに Ρを 添加し Ρの固溶強化を併用することにより、 6 0 k g f /m m 2 以上の引張強度 を確保するとともに、 時効処理による焼鈍で B r ( k G ) /H c ( O e ) ≥ 2 . 5の優れた磁気特性が得られることが判明した。 In the present invention, a fine Cu phase (ε phase) of the order of nanometers (rim) is precipitated by aging treatment in an ultra-low carbon steel to which Cu is added, or Ρ is further added. The combined use of solid solution strengthening of Ρ secures a tensile strength of 60 kgf / mm 2 or more, and is excellent in Br (kG) / Hc (Oe) ≥2.5 by annealing by aging treatment. It was found that excellent magnetic properties were obtained.
以下、 本発明を詳細に説明する。  Hereinafter, the present invention will be described in detail.
本発明のカラ一受像管用のアパーチャ一グリルの素材として用いる極低炭素鋼 としては、 真空脱ガス法を用いて脱炭および脱窒処理し、 鋼中の炭化物および窒 化物を減少させ、 熱延、 または熱延および連続焼鈍の工程で結晶粒の成長を促進 させたものが好ましい。 さらに、 鋼中に微細に分散している炭化物および窒化物 は、 磁壁の移動を妨げ磁気特性を劣化させるので、 鋼中に含まれる元素を予め限 定し、 これらを極力減少させる必要がある。 はじめに、 本発明のカラ一受像管用 のアパーチャ一グリルの素材に用いる鋼に添加される元素、 およびその添加量の 限定について説明する。  The ultra-low carbon steel used as the material of the aperture grille for the color picture tube of the present invention is decarburized and denitrified using a vacuum degassing method to reduce carbides and nitrides in the steel, Alternatively, those in which the growth of crystal grains is promoted in the steps of hot rolling and continuous annealing are preferable. Furthermore, carbides and nitrides finely dispersed in steel hinder domain wall movement and degrade magnetic properties. Therefore, it is necessary to limit the elements contained in steel in advance and reduce them as much as possible. First, the elements added to the steel used for the material of the aperture grill for the color picture tube of the present invention and the limitation of the amount added will be described.
Cに関しては、 冷間圧延後の鋼板中の C量が多いと炭化物が増加し、 磁壁の移 動が阻害され、 また結晶粒の成長が妨げられて磁気特性が劣化する原因となる。 そのため Cの添加量の上限を 0 . 0 1重量％に限定する。 下限は、 真空脱ガス処 理で実用的に低減可能な限り好ましい。  As for C, if the amount of C in the steel sheet after cold rolling is large, the amount of carbides increases and the movement of the domain wall is hindered, and the growth of crystal grains is hindered, leading to deterioration of magnetic properties. Therefore, the upper limit of the amount of C added is limited to 0.01% by weight. The lower limit is preferable as long as it can be practically reduced by vacuum degassing.
M nに関しては、 M nは鋼中の Sと結合して鋼中に含まれている Sを M n Sと して固定し、 熱間脆性を防止すために添加する必要があるが、 磁気特性を向上さ せるためには添加量が少ないほど好ましく、 0 . 5重量％以下の添加量とする。  Regarding Mn, Mn must be added to combine with S in steel to fix S contained in steel as MnS and prevent hot brittleness. In order to improve the characteristics, it is preferable that the addition amount is small, and the addition amount is 0.5% by weight or less.
S iは黒化膜の密着性を劣化させるので、 0 . 3重量％以下の添加量とする。 Sは結晶粒成長の面から少ないほうが好ましく、 0 . 0 5重量％以下の添加量が 好ましい。 また Nも同様で、 0 . 0 5重量％以下の添加量が好ましい。  Since Si degrades the adhesion of the blackened film, the addition amount should be 0.3% by weight or less. S is preferably small from the viewpoint of crystal grain growth, and the addition amount is preferably 0.05% by weight or less. Similarly, N is preferably added in an amount of 0.05% by weight or less.
C uに関しては、 添加量が増加するほど時効処理における ε相の析出量が増加 し、 降伏強度、 およびクリープ強度が大きく増加する。 S相はナノメーターォー ダ一の微細な析出物であるので、 ミクロンオーダ一の析出物とは異なり、 磁壁の 移動を妨げることは殆どなく、 磁気特性を劣化させる程度が極めて小さい。 その ため、 C uの添加量を増加することにより、 磁気特性を低下させることなく降伏 強度、 およびクリープ強度を増加させることができる。 しかし 0 . 0 5重量％未 満の添加量では十分な強度上昇の効果は得られない。 一方、 添加量が多すぎると 析出物が多大となり、 磁気特性が劣化するので、 添加量は 2 . 5重量％以下であ ることが好ましい。 Regarding Cu, the larger the amount added, the larger the amount of ε phase precipitated during aging treatment And the yield strength and creep strength are greatly increased. Since the S phase is a fine precipitate of the order of nanometers, unlike a precipitate of the order of microns, it hardly hinders the movement of the domain wall, and the degree of deterioration of the magnetic properties is extremely small. Therefore, by increasing the amount of Cu added, the yield strength and the creep strength can be increased without deteriorating the magnetic properties. However, if the amount is less than 0.05% by weight, a sufficient effect of increasing the strength cannot be obtained. On the other hand, if the addition amount is too large, the amount of precipitates becomes large and the magnetic properties deteriorate, so the addition amount is preferably 2.5% by weight or less.
Pは固溶強化によって強度を高めるのに有効であり、 Pの添加によって引張強 度、 およびクリープ強度が大きく増加するため、 本願の目的とする C u添加によ る時効析出に基づく強化に加えて、 Pによる固溶強化を併用することができる。 0 . 0 0 1重量％以上の添加量で十分な強度が得られるようになるが、 添加量が 0 . 4 %を越えると偏析による混粒が発生するようになるため、 0 . 4重量％以下 の添加量とする。  P is effective in increasing the strength by solid solution strengthening, and the addition of P greatly increases the tensile strength and creep strength. Therefore, solid solution strengthening by P can be used together. Sufficient strength can be obtained with an addition amount of 0.001% by weight or more. However, if the addition amount exceeds 0.4%, mixed grains due to segregation will occur. The following addition amount is used.
次に、 本発明のカラ一受像管用のアパーチャ一グリル用素材としての薄鋼板の 製造方法を説明する。  Next, a method for producing a thin steel plate as a material for an aperture and a grill for a color picture tube according to the present invention will be described.
真空溶解、 または真空脱ガス法を用いて溶製された上記の化学成分を含有する 極低炭素鋼を熱間圧延した後、 酸洗して熱延工程で生じた酸化皮膜を除去する。 引き続き、 冷間圧延し、 0 . 0 3 5〜0 . 2 m mの板厚とする。 次いで 3 0 0〜7 0 0 °Cの温度で 1 0分から 2 0時間の時効処理を施す。 C u、 または C uおよび Pの添加量が多い場合は、 再結晶温度が上昇するので時効処理を上限の 7 0 0 °C 付近で実施しても差し支えないが、 好ましくは、 C uの析出量や析出物の粒径を 考慮して、 4 5 0〜5 5 0 °Cの温度で時効処理することが好ましい。 時効温度が 3 0 0 °C未満であると ε相が十分に析出せず、 必要な引張強度が得られない。 一 方、 7 0 0 °Cを超える温度で時効すると過時効となり、 ε相が鋼中に再固溶し引 張降伏強度が低下する。 時効処理は、 加熱温度および加熱時間により、 箱形焼鈍 炉、 連続焼鈍炉のいずれを用いても差し支えない。 After ultra-low carbon steel containing the above-mentioned chemical components produced by vacuum melting or vacuum degassing is hot-rolled, it is pickled to remove an oxide film formed in the hot-rolling process. Subsequently, the sheet is cold-rolled to a sheet thickness of 0.035 to 0.2 mm. Next, aging treatment is performed at a temperature of 300 to 700 ° C. for 10 minutes to 20 hours. When the amount of added Cu or Cu and P is large, the recrystallization temperature rises, so that the aging treatment may be carried out at around the upper limit of 700 ° C., but preferably the precipitation of Cu is performed. The aging treatment is preferably performed at a temperature of 450 to 550 ° C. in consideration of the amount and the particle size of the precipitate. If the aging temperature is lower than 300 ° C, the ε phase does not sufficiently precipitate and the required tensile strength cannot be obtained. On the other hand, aging at a temperature exceeding 700 ° C causes overaging, and the ε phase re-dissolves in the steel to lower the tensile yield strength. The aging treatment depends on the heating temperature and heating time. Either furnace or continuous annealing furnace can be used.
また、 別の態様として、 上記の極低炭素鋼を熱延、 および酸洗し、 冷間圧延を 施して 0.1〜0.6 mmの板厚とし、 次いで 500〜800°Cの温度で中間焼鈍 して結晶粒径を調整した後、 二次冷間圧延を施して最終板厚を 0.035〜0.2 mmの板厚とし、 その後上記の時効処理を施してもよい。 焼鈍温度が 500°C未 満の場合は軟化が不十分となり、 二次冷延後に上記の時効処理を施すと引張強度 が極端に高くなる、 一方、 焼鈍温度が 800°Cを超えると、 二次冷延後に上記の 時効処理を施しても所望の引張強度が得られない。  In another embodiment, the above ultra-low carbon steel is hot-rolled, pickled, cold-rolled to a thickness of 0.1 to 0.6 mm, and then annealed at a temperature of 500 to 800 ° C. After adjusting the crystal grain size, secondary cold rolling may be performed to a final thickness of 0.035 to 0.2 mm, and then the above aging treatment may be performed. If the annealing temperature is lower than 500 ° C, the softening becomes insufficient.If the above aging treatment is performed after secondary cold rolling, the tensile strength becomes extremely high.On the other hand, if the annealing temperature exceeds 800 ° C, the Even if the above aging treatment is performed after the next cold rolling, a desired tensile strength cannot be obtained.
(実施例）  (Example)
以下、 実施例にて本発明をさらに詳細に説明する。  Hereinafter, the present invention will be described in more detail with reference to Examples.
表 1に示す化学組成を有する 9種類の鋼（ A〜I ) を真空脱ガスして溶製した スラブを熱間圧延し、 2.5 mmの熱延板とした。 これらの熱延板を硫酸酸洗し た後冷間圧延し、 板厚が 0. lmmおよび 0.3 mmの 2種類の冷延板とした。 そ の後、 板厚が 0.1 mmの冷延板については直接時効処理を施し、 板厚が 0.3 m mの冷延板については中間焼鈍を施し、 板厚が 0.1 mmとなるように二次冷間 圧延した後、 時効処理を施した。 このようにして得られた供試材を、 簡易型のェ ブスタイ ン式磁気測定装置を用い、 1◦エルステッ ドの磁界をかけて、 磁束密度 と保磁力を測定し、 B r ( kG) /H c ( O e ) を求めた。 また、 引張強度をテ ンシロンにて、 クリープ強度はクリープ試験機（東海製作所製） を用い、 負荷応 力 30 k g f Zmm2をかけて、 大気中において 455°Cで 15分保持した際の 伸び （％) を測定し評価した。 表 2に中間焼鈍および時効処理条件と供試材の特 性を示す。 卿 toil A slab obtained by vacuum degassing nine types of steels (A to I) having the chemical compositions shown in Table 1 was hot-rolled into hot-rolled sheets of 2.5 mm. These hot-rolled sheets were subjected to sulfuric acid washing and then cold-rolled to obtain two types of cold-rolled sheets having a thickness of 0.1 mm and 0.3 mm. After that, the cold-rolled sheet with a thickness of 0.1 mm is directly aged, the cold-rolled sheet with a thickness of 0.3 mm is subjected to intermediate annealing, and the secondary cold-rolling is performed to a thickness of 0.1 mm. After rolling, an aging treatment was performed. The specimen obtained in this way was measured for magnetic flux density and coercive force by applying a magnetic field of 1 ° Elsted using a simple eBstein-type magnetometer, and the B r (kG) / H c (O e) was determined. Further, the tensile strength at Te Nshiron, creep strength is used creep test machine (manufactured by Tokai Seisakusho) under load stress 30 kgf ZMM 2, elongation when held for 15 minutes at 455 ° C in the atmosphere ( %) Was measured and evaluated. Table 2 shows the intermediate annealing and aging conditions and the characteristics of the test materials. Lord toil
Z9I ·ο 19 *2 200 '0 10 Ό 10 ·0 ΙΛ ·0 L00 ·0 I  Z9I ο 19 * 2 200 '0 10 Ό 10 00 ΙΛ0 L00
6SI ·0 Lf 'I ZOO '0 io -o 10 ·0 Lf ·0 S00 ·0 Η 6SI 0 Lf 'I ZOO' 0 io -o 10 0 Lf 0 S00 0 Η
Z9 'I ZOO '0 10 ·0 20 ·0 tf ·0 500 "0 0 丄 6S ·0 E9 200 ·0 10 ·0 10 ·0 9f ·0 S00 Ό Δ Z9 'I ZOO' 0 10 0 0 20 tf 0 500 "0 0 丄 6S 0 E9 200 0 10 10 0 9f 9 S0 00 Δ
LSI '0 6S "I E00 ·0 io ·ο 10 ·0 L ·0 900 Ό Ή LSI '0 6S "I E00 · 0 io · ο 10 · 0 L · 0 900 Ό Ή
100 ·0 19 zoo ·0 10 ·0 10 ·0 ·0 丄 00 ·0 α t-000 '0 09 Ί ZOO '0 10 '0 10 ·0 ·0 S00 ·0 3 100 · 0 19 zoo · 0 10 · 0 10 · 0 · 0 丄 00 · 0 α t-000 '0 09 Ί ZOO' 0 10 '0 10 · 0 · 0 S00 · 0 3
091 Ό so -o zoo -o ιο ·ο 10 ·0 8 ·0 刚 ·0 a 091 Ό so -o zoo -o ιο · ο 10 · 0 8 · 0 刚 · 0 a
891 ·0 εο ·0 200 '0 10 ·0 10 ·0 Lf ·0 900 ·0 V d N S ι S u η 3 891 0 εο 0 200 '0 10 0 10 10 Lf 0 900 0 V d N S ι S u η 3
^Μ^^ (mm) ^ ^ ^ Μ ^^ (mm) ^ ^
一 L One L
Z.6HO/86df/X3d  Z.6HO / 86df / X3d
81LLP/66 OM 表 2 81LLP / 66 OM Table 2
時効処理および中間焼鈍条件と供試材の特性 試料 , 中間焼鈍条件 時効処理条件 降伏強度 クリーブ 区 分 伸び  Aging treatment and intermediate annealing conditions and properties of specimens Sample, intermediate annealing conditions Aging treatment conditions Yield strength Cleave section Elongation
温度 rc) 時間（分） 温度（ 時間 (分） (kgf/nim2) (%) Temperature rc) Time (minute) Temperature (time (minute) (kgf / nim 2 ) (%)
A ― - 450 400 2.0 80 0.30 比較例 A ―-450 400 2.0 80 0.30 Comparative example
B 一 450 400 2.5 82 0.25 本発明 B-1 450 400 2.5 82 0.25 The present invention
C 一 - 450 400 3.4 75 0.05 本発明 C-450 400 3.4 75 0.05 The present invention
D 一 - 450 400 3.2 77 0.05 本発明 D 1-450 400 3.2 77 0.05 The present invention
E 1 一 一 250 1500 1.4 91 0.30 比較例 E 1 1-1 250 1500 1.4 91 0.30 Comparative example
E 2 一 一 300 1200 2.5 84 0.29 本発明 E 2 11 300 1200 2.5 84 0.29 The present invention
E 3 一 - 500 250 3.7 75 0.01 本発明 E 3 1-500 250 3.7 75 0.01 The present invention
E 4 ― ― 700 10 4.3 65 0.05 本発明 E 4 ― ― 700 10 4.3 65 0.05 The present invention
E 5 - 一 750 8 8.0 54 0.30 比較例 E 5-1 750 8 8.0 54 0.30 Comparative example
F - 一 450 400 2.8 88 0.04 本発明 F-450 450 2.8 88 0.04 The present invention
G - 450 400 2.0 90 0.03 比較例 G-450 400 2.0 90 0.03 Comparative example
H 1 450 600 450 400 2.3 87 0.05 比較例 H 1 450 600 450 400 2.3 87 0.05 Comparative example
H 2 500 500 450 400 2.5 85 0.01 本発明 H 2 500 500 450 400 2.5 85 0.01 Invention
H3 650 150 450 400 2.6 84 0.01 本発明 H3 650 150 450 400 2.6 84 0.01 The present invention
H4 800 20 450 400 2.7 83 0.01 本発明 H4 800 20 450 400 2.7 83 0.01 Invention
H 5 850 10 450 400 2.0 89 0.01 比較例 H 5 850 10 450 400 2.0 89 0.01 Comparative example
I 450 400 1.6 92 0.01 比較例 産業上の利用可能性 I 450 400 1.6 92 0.01 Comparative example Industrial applicability
請求項 1のアパーチャ一ダリル用素材は、 C uを 0.05〜2.5重量％含有す る低炭素鋼板からなり、 請求項 2のアパーチャ一グリル用素材は、 C uを0.05 〜2.5重量％および Pを 0.00 1〜0.4重量％含有する低炭素鋼板からなるの で優れた磁気特性、 強度を有している。  The material for aperture daryl of claim 1 is made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu, and the material for aperture grill of claim 2 contains 0.05 to 2.5% by weight of Cu and P Since it is made of a low carbon steel sheet containing 0.001 to 0.4% by weight, it has excellent magnetic properties and strength.
請求項 3の製造法は、 C uを 0.05〜2.5重量％含有する低炭素熱延鋼帯を 冷間圧延した後、 3 00〜700°Cの温度で時効処理するものであり、  The method according to claim 3 is to cold-roll a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and then to perform aging treatment at a temperature of 300 to 700 ° C.
請求項 4の製造法は、 C uを0.05〜2.5重量％ぉょびPを0.00 1〜0. 4重量％含有する低炭素熱延鋼帯を冷間圧延した後、 3 00〜70 0°Cの温度で 時効処理するものであり、  The method according to claim 4, wherein the low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P is cold-rolled, and then subjected to 300 to 700 °. Aging treatment at the temperature of C,
請求項 5の製造法は、 C uを 0.05~2.5重量％含有する低炭素熱延鋼帯を 冷間圧延し、 次いで 500〜 800°Cの温度で中間焼鈍を施した後二次冷間圧延 し、 その後 300〜700°Cの温度で時効処理するものであり、  The method according to claim 5 is to cold-roll a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu, then to subject it to intermediate annealing at a temperature of 500 to 800 ° C, and then to perform secondary cold rolling. And then aging at 300-700 ° C,
また請求項 6の製造法は、 C uを 0.05〜2.5重量％および Pを 0.00 1〜 0.4重量％含有する低炭素熱延鋼帯を冷間圧延し、 次いで 500〜800°Cの温 度で中間焼鈍を施した後二次冷間圧延し、 その後 300〜70 CTCの温度で時効 処理するものであるので、 これらの製造法により、 優れた引張強度と優れた高温 クリープ強度を有し、 かつ優れた磁気特性を有する、 カラ一受像管用アパーチャ ―グリル用の素材を製造できる。  The method according to claim 6 is characterized in that a low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P is cold-rolled, and then at a temperature of 500 to 800 ° C. Since it is subjected to intermediate annealing and then to secondary cold rolling, and then to aging at a temperature of 300 to 70 CTC, it has excellent tensile strength and excellent high temperature creep strength by these manufacturing methods, and Apertures for empty picture tubes with excellent magnetic properties-Materials for grills can be manufactured.
そして請求項 7〜1 0のアパーチャ一グリル又は受像管は、 フレームに溶接さ れた後黒化するための熱処理が施されても、 アパーチャ一グリルを構成している 各テ一プが弛むことがない。  In the aperture grille or picture tube according to claims 7 to 10, even if a heat treatment for blackening is performed after being welded to the frame, each tape constituting the aperture grille is loosened. There is no.

Claims

請 求 の 範 囲 The scope of the claims
1. C uを 0.05〜2.5重量％含有する低炭素鋼板からなるカラー受像管用 アパーチャ—ダリル用素材。 1. A material for aperture daryl made of low carbon steel sheet containing 0.05 to 2.5% by weight of Cu for color picture tubes.
2. C uを 0.05〜2.5重量％および Pを 0.001〜0.4重量％含有する 低炭素鋼板からなる力ラー受像管用ァパーチャ一グリル用素材。 2. A low-carbon steel plate aperture and grill material made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P.
3. C uを 0.05〜2.5重量％含有する低炭素熱延鋼帯を冷間圧延した後、 300〜700°Cの温度で時効処理してなることを特徴とするカラ一受像管用ァ パーチヤ一グリル用素材の製造方法。 3. A cold cathode tube tube aperturer characterized by cold rolling a low carbon hot rolled steel strip containing 0.05 to 2.5 wt% Cu and then aging at a temperature of 300 to 700 ° C. Manufacturing method for grilling material.
4. C uを 0.05〜2.5重量％および Pを 0.001〜0.4重量％含有する 低炭素熱延鋼帯を冷間圧延した後、 300〜700°Cの温度で時効処理してなる ことを特徴とする力ラー受像管用アパーチャ一グリル用素材の製造方法。 4. A low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of cold-rolled steel is cold-rolled and then aged at 300 to 700 ° C. For manufacturing a material for an aperture and a grill for a picture tube.
5. C uを 0.05〜2.5重量％含有する低炭素熱延鋼帯を冷間圧延し、 次い で 500〜80 (TCの温度で中間焼鈍を施した後二次冷間圧延し、 その後 300 〜700°Cの温度で時効処理してなることを特徴とするカラ一受像管用ァパーチ ャ一グリル用素材の製造方法。  5. Cold-rolled low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu, followed by 500 to 80 (intermediate annealing at a temperature of TC, followed by secondary cold rolling, and then 300 A method for producing a material for an aperture and a grill for a color picture tube, wherein the material is subjected to aging treatment at a temperature of up to 700 ° C.
6. Cuを 0.05〜2.5重量％および Pを 0.001〜0.4重量％含有する 低炭素熱延鋼帯を冷間圧延し、 次いで 500〜800°Cの温度で中間焼鈍を施し た後二次冷間圧延し、 その後 300〜 70 TCの温度で時効処理してなることを 特徴とするカラ一受像管用ァパーチャ一グリル用素材の製造方法。  6. Cold-rolled low-carbon hot-rolled steel strip containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P, and then subjected to intermediate annealing at a temperature of 500 to 800 ° C, followed by secondary cold rolling. A method for producing a material for an aperture and a grill for a color picture tube, which comprises rolling and then aging at a temperature of 300 to 70 TC.
7. C uを 0.05〜2.5重量％含有する低炭素鋼板からなる力ラ一受像管用 アパーチャ一グリル。  7. Aperture grille for picture tubes made of low carbon steel containing 0.05 to 2.5% by weight of Cu.
8. C uを 0.05〜2.5重量％および Pを 0.001〜0.4重量％含有する 低炭素鋼板からなる力ラ一受像管用ァパーチャ―グリル。  8. An aperture grille for picture tubes made of low carbon steel containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P.
9. Cuを 0.05〜2.5重量％含有する低炭素鋼板からなるカラ一受像管用 アパーチャ—ダリルを組み込んだカラ一受像管。 9. A color picture tube incorporating an aperture daryl made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu.
10. C uを 0 · 05〜2.5重量％および Pを 0.001〜0.4重量％含有す る低炭素鋼板からなるカラー受像管用アパーチャ一グリルを組み込んだカラ一受 像管。 10. A color picture tube incorporating a color picture tube aperture grill made of a low carbon steel sheet containing 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P.
PCT/JP1998/001197 1998-03-19 1998-03-19 Material for aperture grill for color picture tube, process for making the same, aperture grill, and picture tube WO1999047718A1 (en)

Priority Applications (3)

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AU64201/98A AU6420198A (en) 1998-03-19 1998-03-19 Material for aperture grill for color picture tube, process for making the same,aperture grill, and picture tube
PCT/JP1998/001197 WO1999047718A1 (en) 1998-03-19 1998-03-19 Material for aperture grill for color picture tube, process for making the same, aperture grill, and picture tube
JP2000536899A JP3475213B2 (en) 1998-03-19 1998-03-19 Material for aperture grill for color picture tube, method of manufacturing the same, aperture grill and picture tube

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP1211330A4 (en) * 1999-05-31 2004-11-10 Toyo Kohan Co Ltd Aperture grill material for color picture tube, production method therefor, aperture grill and color picture tube
JPWO2005033349A1 (en) * 2003-10-06 2006-12-14 新日本製鐵株式会社 High-strength electrical steel sheet, processed parts thereof, and manufacturing method thereof
JP2008261053A (en) * 2002-06-26 2008-10-30 Nippon Steel Corp Electrical steel sheet and manufacturing method thereof

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JPS63255340A (en) * 1987-04-13 1988-10-21 Hitachi Metals Ltd Flat tension shadow mask material and production thereof
JPH0867945A (en) * 1994-08-26 1996-03-12 Nisshin Steel Co Ltd Steel sheet for apeature frame and its production

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JPS63255340A (en) * 1987-04-13 1988-10-21 Hitachi Metals Ltd Flat tension shadow mask material and production thereof
JPH0867945A (en) * 1994-08-26 1996-03-12 Nisshin Steel Co Ltd Steel sheet for apeature frame and its production

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1211330A4 (en) * 1999-05-31 2004-11-10 Toyo Kohan Co Ltd Aperture grill material for color picture tube, production method therefor, aperture grill and color picture tube
JP2008261053A (en) * 2002-06-26 2008-10-30 Nippon Steel Corp Electrical steel sheet and manufacturing method thereof
JPWO2005033349A1 (en) * 2003-10-06 2006-12-14 新日本製鐵株式会社 High-strength electrical steel sheet, processed parts thereof, and manufacturing method thereof
US8097094B2 (en) 2003-10-06 2012-01-17 Nippon Steel Corporation High-strength electrical steel sheet and processed part of same
JP5000136B2 (en) * 2003-10-06 2012-08-15 新日本製鐵株式会社 High-strength electrical steel sheet, shape processed parts thereof, and manufacturing method thereof

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