WO2000047791A1 - Matiere pour masque perfore destine a un tube-image couleur, masque perfore et tube-image couleur - Google Patents

Matiere pour masque perfore destine a un tube-image couleur, masque perfore et tube-image couleur Download PDF

Info

Publication number
WO2000047791A1
WO2000047791A1 PCT/JP2000/000758 JP0000758W WO0047791A1 WO 2000047791 A1 WO2000047791 A1 WO 2000047791A1 JP 0000758 W JP0000758 W JP 0000758W WO 0047791 A1 WO0047791 A1 WO 0047791A1
Authority
WO
WIPO (PCT)
Prior art keywords
shadow mask
weight
picture tube
color picture
less
Prior art date
Application number
PCT/JP2000/000758
Other languages
English (en)
Japanese (ja)
Inventor
Tsuneyuki Ide
Takahiko Miyazaki
Susumu Shigemasa
Yasuo Tahara
Masahiro Fukumoto
Taizo Sato
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 AU24603/00A priority Critical patent/AU2460300A/en
Publication of WO2000047791A1 publication Critical patent/WO2000047791A1/fr

Links

Classifications

    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • 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 shadow mask material for a color picture tube, a shadow mask, and a picture tube incorporating the same. More specifically, the present invention relates to a material for a shadow mask for a color picture tube having excellent tensile strength and high-temperature creep strength, a shadow mask, and a color picture tube incorporating the same.
  • This curved surface cathode ray tube has a problem that eyes are easily fatigued due to irregular reflection of external light rays such as lighting. Therefore, flattening of the cathode ray tube has been desired.
  • the flat surface of the cathode ray tube progresses, the flat surface may not be achieved on the slightly curved mask surface which the conventional cathode ray tube employs.
  • An object of the present invention is to provide a picture tube capable of coping with the above-mentioned completely flat surface CRT, and furthermore to provide an excellent tensile strength and high-temperature creep strength.
  • SUMMARY OF THE INVENTION It is an object of the present invention to provide a color picture tube having a certain degree. Disclosure of the invention
  • the shadow mask material for a color picture tube according to the present invention is characterized by being made of a low-carbon steel containing Mn in an amount of from 0.02 to 0.5% by mass. ⁇
  • the material for a shadow mask for a color picture tube according to the present invention is characterized by comprising a low carbon steel containing 0.00001 to 0.08% by weight of C and 0.02 to 0.5% by weight of Mn.
  • the material preferably contains S at 0.05% by weight or less, Ai at 0.0 ID 01 to 0.1% by weight, and N at 0.0000 to 0%. 0.15% by weight, preferably 0.001 to 0.1% by weight of Cu, and 0.001 to 0.1% by weight of Cr. Desirably, 11 is contained in a content of 0.001 to 0.1% by weight.
  • a shadow mask for a color picture tube uses the material for a shadow jif mask described in any of the above.
  • a color picture tube according to the present invention is characterized by incorporating the shadow mask.
  • the color picture tube according to the present invention is characterized in that the shadow mask is attached to a frame in a state where tension is applied in a vertical direction.
  • the color picture tube according to the present invention is characterized in that the shadow mask is attached to a frame while applying tension in the vertical and horizontal directions.
  • the tension in the left-right direction is preferably smaller than the tension in the vertical direction.
  • Shadow mask material of the present invention and under load stress 2 0 kgf Zmm 2, in which the elongation at the time of holding 4 ⁇ 5 0 ° CX 6 0 min was set to 3% or less 0.1
  • the shadow mask of the present invention has an elongation of 0.5% or less when a load stress of 20 kgf Zmm 2 is applied to the shadow mask after being incorporated in the color picture tube, and held at 450 ° C. for 60 minutes. It is characterized by being such that it becomes.
  • the shadow mask of the present invention is fixed (for example, welded) to the frame in a state where a large tension is applied in the vertical direction as a result of adjusting the components contained in the shadow mask material. Further, the shadow mask of the present invention is a jO C which is fixed to the frame in a state where a slight tension is applied in the horizontal direction of the frame as compared with the vertical direction.
  • the shadow mask material of the present invention even in a heat treatment step called a so-called blackening treatment, even after the heat treatment is performed while tension is applied to the shadow mask, the shadow mask itself becomes loose and wrinkled. It has sufficient high-temperature creep strength to maintain a state that does not occur.
  • the low-carbon steel used as the material of the shadow mask of the present invention is preferably a low-carbon steel that is decarbonized and denitrified using a vacuum degassing method to reduce carbides and nitrides in the steel and hot-rolled. .
  • the upper limit is 0.08% by weight. More preferably, the content is 0.06% by weight or less, and further preferably, the content is 0.04% by weight or less.
  • the lower limit is 0.0001 weight, which can be reduced practically by vacuum degassing or open coil annealing (OCA) using a box annealing furnace.
  • the content is ⁇ %.
  • the content is more preferably 0.0002% by weight or more, and even more preferably 0.003% by weight or more.
  • Mn since Mn is a solid solution in steel and is an element that increases the material hardness by solution hardening, the tensile strength and creep strength are improved. Furthermore, Mn is an element that must be added to combine with S in steel to fix S contained in steel as Mn S and prevent hot embrittlement. From this viewpoint, the content is preferably at least 0.02% by weight, and more preferably at least 0.04% by weight.
  • the content of Mn is preferably as small as possible, and the content is preferably 0.5% by weight or less. More preferably, the content is 0.47% by weight or less.
  • the content of Si is preferably as small as possible because it impairs the etching property and degrades the adhesion of the blackened film, and is preferably 0.3% by weight or less.
  • the content of S is small, and the content should be 0.05% by weight or less. Is desirable.
  • the content is preferably 0.001% by weight or more. More preferably, the content is 0.002% by weight or more. More preferably, the content is 0.003% by weight or more.
  • the A1 content is preferably 0.1% by weight or less and> 0 when subjected to a normal steelmaking process. More preferably, the content is 0.08% by weight or less. More preferably, the content is 0.06% by weight or less.
  • the content is preferably 0.0001% by weight or more.
  • the content is more preferably 0.0002% by weight or more, and even more preferably 0.0003% by weight or more.
  • the content is preferably as follows.
  • the content is more preferably 0.013% by weight or less, and even more preferably 0.011% by weight or less.
  • the content is preferably 0.001% by weight or more.
  • the content is more preferably at least 0.002% by weight, and even more preferably at least 0.003% by weight.
  • the etching rate is reduced and the etching solution is contaminated. More preferably, the content is 0.09% by weight or less. More preferably, the IC content is 0.08% by weight or less.
  • the content is preferably 0.001% by weight or more.
  • the content is more preferably at least 0.002% by weight, and even more preferably at least 0.003% by weight.
  • the content is preferably 0.1% by weight or less, more preferably 0.09% by weight or less. More preferably, the content is 0.08% by weight or less.
  • the content is preferably 0.001% by weight or more.
  • the content is more preferably at least 0.002% by weight, and even more preferably at least 0.003% by weight.
  • Ni is an expensive element
  • its content is preferably not more than 0.1% by weight. More preferably, the content is 0.09% by weight or less. More preferably, the content is 0.08% by weight or less.
  • the molten metal having the above composition obtained by the ordinary melting method is subjected to vacuum degassing or deoxidation treatment with A 1, Si or the like, and is subjected to a continuous forming and hot rolling step to obtain a hot rolled sheet.
  • a pickling process after descaling, cold rolling is performed to obtain a sheet thickness of 0.2 to 0.8 mm.
  • finishing is performed by cold rolling to a predetermined thickness of 0.05 to 0.20 mm.
  • a box annealing furnace or a continuous annealing furnace may be used for the annealing treatment.
  • a water-soluble casein resist was applied on both sides of the shadow mask material shown in Table 1, and after drying, the resist on both surfaces of the material was patterned using a glass dry plate on which a pair of front and back patterns were drawn. Next, exposure, hardening, and baking are performed, and then, on both sides of the patterned resist, a spray of ferric chloride solution having a liquid temperature of 60 ° C and a specific gravity of 48 ° Be is used as an etching solution. Etching was performed by spraying. After the etching, the resist was stripped off with an alkaline solution, washed, dried, and dried to produce a shadow mask.
  • the shadow mask of the present invention is fixed to a frame under a tension.
  • this fixing method the welding method is most often used.
  • the center portions of the upper and lower frames of the frame are forcibly bent slightly inward, and the shadow mask is fixed in this state.
  • the upper and lower frames that have been deflected inside are returned to their original positions (the compulsory force is released)
  • the shadow mask is loaded with vertical tension.
  • the vertical stress applied to the above shadow mask is in a state where several tens of kg ⁇ / mm- is applied to the actual machine, but in a test, apply 20 kgf Zmm2 to if If the elongation at 450 ° C. for 60 minutes is 0.5% or less, the problem that the shadow mask becomes loose during use of the picture tube does not occur.
  • the shadow mask material in the state of the shadow mask material before the so-called blackening process, it is desirable that the mechanical property evaluation be strictly evaluated in view of the fact that the material passes through a heat treatment process called a blackening process after the material is formed. Therefore, the shadow mask material, the elongation when the test to over 2 0 1 kgf Zmm 2 of applied stress, and held 4 5 0 ° CX 6 0 min 0.3
  • Table 1 shows the chemical composition of hot rolled 2.5mm hot-rolled slabs obtained by vacuum degassing steels ( ⁇ to ⁇ ) with different types of chemical compositions. Show. These hot-rolled sheets were washed with sulfuric acid and cold-rolled to obtain cold-rolled sheets having a thickness of 0.3 mm. After that, annealing was performed using a continuous annealing furnace, and the sheet thickness was reduced to 0.1 mm by cold rolling.
  • Table 2 summarizes the characteristic tests of the test materials obtained in this way.
  • creep elongation is using creep testing machine (manufactured by Tokai Seisakusho), by applying a load stress 2 0 kgf Zmm 2, 4 5 0 ° CX 6 0 minute hold in the air And the elongation (%) after applying the applied stress of 20 kgf Zmm 2 ⁇ 3 times in the atmosphere at 450 ° C for 20 minutes three times And evaluated.
  • Table 1 Chemical composition of test material (steel plate)
  • the reason why the creep elongation in the column of ⁇ Characteristics of a shadow mask material '' described in Table 2 is set to ⁇ 0.3% or less '' is that the shadow mask is blackened after being welded to the frame. Even after the shadow mask is attached to the frame with the tension applied after the blackening process, the tension is applied without loosening the shadow mask, assuming that heat treatment is performed. This defines the test conditions for shadow mask materials that can be retained. Under these conditions, creep elongation was measured after applying a load stress of 2 O kgf / mm 2 to the shadow mask material and holding it at 450 ° C for 60 minutes. If this growth is less than 0.3%,
  • a heating process such as a baking process and a glass sealing process that is performed after the color picture tube is assembled into the picture tube is performed after the blackening process. For this reason, the creep elongation of the shadow mask is larger than that of the shadow mask material.
  • the shadow mask material, 20 over kg f / mm 2 of applied stress, when you turn the heating and cooling repetition of 20 minutes for 3 at room temperature and 450 ° C Is set to be less than 0.6%. If the elongation is 0.6% or less, it can be used as a flat mask shadow mask even after the shadow mask is installed in the picture tube.
  • the etching characteristics were evaluated by the etch factor value and the etching surface roughness.
  • the etching conditions were half-etching using a ferric chloride solution adjusted to a solution specific gravity of 1.498 at a solution temperature of 50 ° C., a spray pressure of 3.0 kgf / cm 2 , and an etch factor value was obtained.
  • the etching surface roughness was evaluated by the etch factor value and the etching surface roughness
  • Ra value was obtained and evaluated by jf laser one focus displacement meter.
  • the product of the present invention is excellent in any of the above characteristics. Is indicated in the column of judgment.
  • the comparative product which does not fall within the scope of the present invention is inferior in any of the above characteristics, and therefore, is indicated by the symbol X as an overall evaluation.
  • the material for a shadow mask for a color picture tube, the shadow mask, and the picture tube incorporating the shadow mask of the present invention have excellent tensile strength and high-temperature creep strength. Can be flattened.

Abstract

L'invention se rapporte à une matière pour masque perforé destiné à un tube-image couleur, qui se caractérise en ce qu'elle est constituée d'un acier à faible teneur en carbone contenant 0,02 à 0,5 % en poids de Mn, en ce qu'elle est constituée d'un acier à faible teneur en carbone contenant 0,0001 à 0,08 % en poids de C et 0,02 à 0,5 % en poids de Mn, ou en ce qu'elle contient 0,05 % en poids ou moins de S, 0,001 à 0,1 % en poids de Al, 0,0001 à 0,015 % en poids de N, 0,001 à 0,1 % en poids de Cu, 0,001 à 0,1 % en poids de Cr, et 0,001 à 0,1 % en poids de Ni. L'invention se rapporte également à un tube-image couleur caractérisé par un masque perforé fixé de telle manière à un bâti qu'une tension est communiquée au masque perforé suivant la verticale, ou qu'une tension est communiquée au masque perforé à la fois suivant la verticale et suivant l'horizontale.
PCT/JP2000/000758 1999-02-12 2000-02-10 Matiere pour masque perfore destine a un tube-image couleur, masque perfore et tube-image couleur WO2000047791A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU24603/00A AU2460300A (en) 1999-02-12 2000-02-10 Material for shadow mask for color picture tube, shadow mask, and color picture tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/35056 1999-02-12
JP3505699 1999-02-12

Publications (1)

Publication Number Publication Date
WO2000047791A1 true WO2000047791A1 (fr) 2000-08-17

Family

ID=12431389

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/000758 WO2000047791A1 (fr) 1999-02-12 2000-02-10 Matiere pour masque perfore destine a un tube-image couleur, masque perfore et tube-image couleur

Country Status (2)

Country Link
AU (1) AU2460300A (fr)
WO (1) WO2000047791A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62249339A (ja) * 1986-04-21 1987-10-30 Sony Corp 陰極線管の色選別機構
US5610473A (en) * 1994-09-09 1997-03-11 Kabushiki Kaisha Toshiba Color cathode-ray tube
JPH10219397A (ja) * 1997-02-06 1998-08-18 Toyo Kohan Co Ltd シャドウマスク用鋼板、シャドウマスク及び受像管

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62249339A (ja) * 1986-04-21 1987-10-30 Sony Corp 陰極線管の色選別機構
US5610473A (en) * 1994-09-09 1997-03-11 Kabushiki Kaisha Toshiba Color cathode-ray tube
JPH10219397A (ja) * 1997-02-06 1998-08-18 Toyo Kohan Co Ltd シャドウマスク用鋼板、シャドウマスク及び受像管

Also Published As

Publication number Publication date
AU2460300A (en) 2000-08-29

Similar Documents

Publication Publication Date Title
EP1099771B1 (fr) Tole en acier inoxydable pour masque perfore, procede de fabrication associe et masque perfore
JP3548606B2 (ja) アパーチャーフレーム用鋼板およびその製造方法
WO2000047791A1 (fr) Matiere pour masque perfore destine a un tube-image couleur, masque perfore et tube-image couleur
JP3544590B2 (ja) カラー受像管用磁気シールド用素材
US20020117241A1 (en) Method of manufacturing Fe-Ni alloy material for pressed flat mask
WO2001059169A1 (fr) Alliage fe-ni-co pour masque entierement plat du type masque forme a la presse, masque entierement plat correspondant et tube cathodique couleur utilisant un tel masque
TWI258511B (en) Low-expansion Fe-Ni alloy for semi-tension mask, semi-tension mask of the alloy, and color picture tube using the mask
WO2000070110A1 (fr) Materiau pour masque perfore destine a un tube de reception d'image couleurs, son procede de production, masque perfore et tube de reception d'images
WO2000049189A1 (fr) Masque perfore destine a un tube-image couleur, masque perfore et tube-image couleur
US6917150B2 (en) Raw material for shadow mask for color image receiving tube
WO2000070109A1 (fr) Materiau pour masque perfore destine a un tube de reception d'images couleurs, son precede de production, masque perfore et tube de reception d'images
WO2000070111A1 (fr) Materiau destine a un masque perfore de tube recepteur d'images en couleurs, procede de production associe, masque perfore et tube recepteur d'images
GB2336940A (en) Shadow mask for a color picture tube
WO2000070108A1 (fr) Materiau pour masque perfore, masque perfore et tube de reception d'images couleurs comportant ce masque perfore
JP3793122B2 (ja) カラー受像管用マスク用材料の製造方法
JP2683674B2 (ja) 陰極線管の色選別機構
JP3600818B2 (ja) カラー受像管用マスク用材料、カラー受像管用マスクおよびカラー受像管
JP3469559B2 (ja) 黒化処理後の低熱膨張性に優れたフラットマスク用Ｆｅ−Ｎｉ−Ｃｏ系合金
JP2003183779A (ja) カラー受像管用シャドウマスク用素材、シャドウマスクおよび受像管
JPH0251973B2 (fr)
JPS61201757A (ja) シヤドウマスク材及びシヤドウマスク
JP2002004004A (ja) カラー受像管用シャドウマスク用素材、シャドウマスクおよび受像管
JP2001329341A (ja) カラー受像管用シャドウマスク素材、シャドウマスクおよびカラー受像管
TW403930B (en) A steel sheet for shadow mask, a shadow mask, a producing method of shadow mask, and a color picture tube
JP2004115895A (ja) カラー受像管用シャドウマスク用素材、シャドウマスクおよびカラー受像管

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
ENP Entry into the national phase

Ref country code: JP

Ref document number: 2000 598683

Kind code of ref document: A

Format of ref document f/p: F

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase