WO2004035849A1 - カラー受像管用アパーチャーグリル用素材、アパーチャーグリルおよびカラー受像管 - Google Patents
カラー受像管用アパーチャーグリル用素材、アパーチャーグリルおよびカラー受像管 Download PDFInfo
- Publication number
- WO2004035849A1 WO2004035849A1 PCT/JP2003/013002 JP0313002W WO2004035849A1 WO 2004035849 A1 WO2004035849 A1 WO 2004035849A1 JP 0313002 W JP0313002 W JP 0313002W WO 2004035849 A1 WO2004035849 A1 WO 2004035849A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- aperture
- less
- picture tube
- grill
- Prior art date
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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
- C22C38/004—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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
-
- 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
Definitions
- the present invention relates to a material for an aperture grill for a color picture tube, an aperture grill, and a color picture tube incorporating the same. More specifically, excellent tensile strength and lightness
- the present invention relates to a material for an aperture-grill for a color picture tube having a high-temperature creep strength, an aperture-daryl, and a color picture tube incorporating the same.
- the aperture grille used for color picture tubes is welded to the frame with a large tension applied during manufacture, so the material for the aperture grille for color picture tubes has a tensile strength of at least 75 OMPa It is needed. For this reason, a low carbon steel plate which has been subjected to strong processing and reinforced is used as the material for the aperture and grill for the color picture tube which is currently used.
- heat treatment for blackening is performed after welding to the frame, but heat treatment is performed to maintain the tensioned state without loosening the tapes that make up the aperture grille after blackening. Is carried out at a temperature of 450 ° C below the recrystallization temperature of the steel in a short time of about 15 minutes.
- the diffusion phenomenon cannot be avoided under these black heat treatment conditions, and the diffusion causes the tape to elongate, causing the tape to be twisted or cut.
- the color picture tube is composed of an electron gun and a phosphor screen for converting an electron beam into an image.
- the inside of the picture tube is covered with a magnetic shield material to prevent the electron beam from being deflected by geomagnetism. .
- the aperture grill must also have the function as a magnetic shield material, and has a large magnetic flux density (Br) and a small coercive force (He) as magnetic properties. Materials with a large coercivity ratio (BrZHc) are required.
- the magnetic flux density is 0.8 Tesla (T) or less.
- Japanese Patent No. 25481333 discloses that N contains 40 to 100 PPM and Mn is 0.20.
- a method has been disclosed for reducing the creep elongation during the blackening treatment due to the high strength and high temperature creep properties of the ultra-low carbon steel sheet containing up to 0.60% by weight.
- the solute atom N since the solute atom N has a significantly smaller atomic radius than the solvent atom F e, N forms an interstitial solid solution in the Fe crystal lattice and forms a so-called Cottrell atmosphere.
- N in Fe has a high diffusion rate, so creep elongation, that is, N atoms gather around dislocation creep to form a Cottrell atmosphere like a cloud, dislocation creep Creep elongation is reduced due to the effect of suppressing the movement of It is believed to have the effect.
- the aperture grill must also have a function as a magnetic shielding material, and high soft magnetic characteristics are required, and these methods have limitations.
- An object of the present invention is to provide a material for an aperture grille for a color picture tube, which has excellent tensile strength and high-temperature creep strength and also has excellent magnetic properties as compared with current materials, and a method for producing the same. Disclosure of the invention
- the present inventor has conducted various studies to solve the above technical problem. As a result, by setting 1 to 0.05% by weight or more, the solid solution strengthening phenomenon of Si was found, and the excellent handling property was obtained. Thus, the present invention has achieved high strength characteristics, and has led to the present invention.
- the most important technical problem disclosed by the present invention is that by setting 31 to 0.051% by weight or more, the solid solution strengthening method of Si can realize high strength characteristics with excellent handling properties. .
- a color picture tube for aperture one grill material of the invention is, Mn and 0.60 weight 0/0 or more, the S i 0. 051% by weight or more, and A 1 0. 03 wt% or less, the balance F e Oyo ⁇ It is made of low carbon alloy steel consisting of unavoidable impurities.
- a color picture tube for aperture one grill material of the invention is, C and 0.05 wt% or less, Mn of 0.60 wt% or more, 3 1 0.051 weight 0/0 or more, and 0.1 a A 1 0 It is characterized by being made of a low-carbon alloy steel containing 3% by weight or less, with the balance being Fe and unavoidable impurities.
- a color picture tube for aperture one grill material of the invention is a 0.60 wt% or more Mn, the S i 0. 05 1% by weight or more, and A 1 0. 03 weight 0/0 or less, the balance F e It is characterized in that the low carbon alloy steel strip consisting of unavoidable impurities is subjected to shape modification by heat treatment at a temperature without recrystallization.
- C is 0.03% by weight or less and Mn is 0.60% by weight. /.
- the material for an aperture and a grill for a color picture tube according to the present invention comprises: Mn of 0.60% by weight or more, 31 of 0.051% by weight or more, and A1 of 0.03% by weight or less, with the balance Fe and inevitable
- a low-carbon alloy steel strip made of impurities is subjected to surface roughness treatment so that the surface roughness Ra (JISB 0601) is 0.1 to 0.8 ⁇ , and heat treatment is performed at a temperature that does not cause recrystallization. It is characterized by performing shape correction processing.
- the material for the aperture grille of the color picture tube of the present invention is as follows: C is 0.03% by weight or less, Mn is 0.60% by weight or more, 31 is 0.051% by weight or more, and A1 is 0.03% by weight. % Or less, and the low carbon alloy steel strip consisting of the balance Fe and unavoidable impurities is subjected to a surface roughness treatment so that the surface roughness Ra (JISB 0601) is in the range of 0.8 to 0.8 ⁇ m.
- the material is subjected to shape correction by heat treatment at a temperature that does not cause recrystallization.
- P is 0.10% by weight or less
- N is 0.0040 to 0.030% by weight
- ⁇ 1 ⁇ is 0.1% by weight. It is preferable that one or more of any one of 001% by weight or more and S is 0.10% by weight or less be contained within the above-mentioned respective component amounts.
- An aperture grill for a color picture tube according to the present invention is characterized by using the material for an aperture grill described above.
- a color picture tube according to the present invention is characterized in that the above-mentioned aperture grill is incorporated.
- the low-carbon steel used as the material of the aperture grill of the present invention is preferably a steel obtained by decarburizing and denitrifying using a vacuum degassing method to reduce carbides and nitrides in the steel and hot-rolled.
- the upper limit is preferably 0.05% by weight, more preferably 0.01% by weight or less, and the lower limit is vacuum degassing or open by a box-type annealing furnace.
- the content is preferably 0.0001% by weight, more preferably 0.0002% by weight or more, and more preferably 0.005% by weight, which can be practically reduced by coil annealing (OCA). % Or more.
- Mn is an important component of the present invention, and in order to improve the creep characteristics of the aperture grill, the content of Mn is preferably as large as possible, and the lower limit is set to 0.60% by weight. From the viewpoint of properties, the content is preferably 3.0% by weight or less.
- Si is in the range of 0.051 to 6.0% by weight. More preferably, the content is 0.051 to 1.0% by weight. More preferably, the content is set to 0.06 to 0.5% by weight.
- Si degrades the adhesion of the blackened film, so the amount was restricted to a small amount.
- the amount of Si can be relaxed from the conventional regulation by improving the annealing conditions for blackening and reducing the variation in surface roughness. Therefore, Si is positively added for the purpose of improving mechanical properties and reducing magnetic properties, especially coercive force (He), by using solid solution strengthening. At less than 0.051% by weight, no improvement in tensile strength due to solid solution is observed. Conversely, if the content exceeds 6.0% by weight, the adhesion of the blackened film is deteriorated. 6 to 6.0%.
- the content of S is preferably as small as possible, and is preferably 0.10% by weight or less. More preferably, the content is 0.05% by weight or less.
- A1 is an important element of the present invention like Mn, and is used as a deoxidizing agent in a steelmaking process, and has an effect of improving the cleanliness of steel. Therefore, the content is preferably 0.001% by weight or more.
- the upper limit should be 0.03% by weight or less.
- N must be added because it forms a solid solution in steel, increases the hardness of the material, and improves the tensile strength and creep strength. Furthermore, in order to form a nitride of high hardness, since the nitride is finely dispersed in crystal grains, it has an effect of inhibiting the movement of dislocation creep, and thus has an effect of particularly improving creep strength. You.
- 0.0040 weight. / 0 or more is preferable. More preferably, the content is 0.007% by weight or more.
- the amount of N is large, the amount of nitrides increases excessively and the material becomes embrittled. More preferably, the content is 0.017% by weight or less.
- Cu may be added as a solid solution in steel to increase the material hardness and improve the tensile strength and creep strength.
- the content is preferably more than 0.001% by weight.
- the content is more preferably 0.002% by weight or more, and even more preferably 0.003% by weight or more.
- the etching rate is reduced and the etching solution is contaminated, so that the content is preferably 2.0% by weight or less. More preferably, the content is 0.1% by weight or less.
- Cr may be added since it forms a solid solution in copper to increase the material hardness and improve the tensile strength and creep strength. When added, Cr suppresses the diffusion of N, which forms the Cottrell atmosphere, through interaction with the solid solution nitrogen (N) remaining in the steel. In particular, at high temperatures such as 455 ° C, the diffusion rate of N becomes extremely high, so that the effect of suppressing the movement of dislocations at high temperatures only with N is small.
- the lower limit of the amount of Cr added is preferably set to 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. On the other hand, if the Cr content is large, carbides are formed and the magnetic properties are impaired. The 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 upper limit is 0.10% by weight.
- Ti may be added if necessary. If added, 0.10% by weight or less is desirable. If the content exceeds 0.1% by weight, recrystallization during annealing is suppressed, and magnetic properties are degraded, or annealing at a higher temperature is performed, and a heat buckle is generated, which is not preferable.
- Nb may be added if necessary.
- 0.10% by weight or less is desirable. 0.10 weight. If the ratio exceeds / 0 , recrystallization during annealing is suppressed and the magnetic properties are degraded, or annealing at a higher temperature results in heat buckle, which is not preferable.
- B can be added as needed.
- the content is preferably 0.010% by weight or less. If the content exceeds 0.010% by weight, B evaporates during a high vacuum in the cathode ray tube, deteriorating the vacuum, which is not preferable.
- a method for producing a thin steel sheet as a material for an aperture grille of the present invention will be described.
- the molten metal having the above composition obtained by the ordinary melting method is subjected to vacuum degassing or deoxidizing treatment by A1, Si or the like, and is subjected to a continuous forming and hot rolling step to obtain a hot rolled sheet. In the pickling process, after descaling, cold rolling is performed to a thickness of 0.2 to 0.3 mm.
- finishing force is applied by cold rolling to a predetermined plate thickness of 0.05 to 0.20 mm.
- a box annealing furnace or a continuous annealing furnace may be used.
- heat treatment is performed in a temperature range where recrystallization is not performed without applying a surface roughness treatment, or in a temperature range where recrystallization is not performed after performing a surface roughness treatment.
- the atmosphere is preferably a non-oxidizing atmosphere, for example, particularly preferably a reducing atmosphere containing nitrogen and hydrogen.
- the surface roughness imparting treatment may be performed by a well-known method, for example, may be performed in a temper rolling step, and is further performed during cold rolling to a predetermined thickness of 0.05 to 0.2 Omm. You may. Before and after the heat treatment in a temperature range that does not cause recrystallization, a treatment for correcting the shape of the plate using a mechanical type tension leveler or a hydro tension leveler may be performed.
- the surface roughness Ra (JISB0601) of the cold rolled sheet is preferably in the range of 0.1 to 0.8 ⁇ . More preferably, the range is 0.4 to 0.6 / zm. If it is less than 0.1 / im, the adhesion to the resist is poor. If it exceeds 0.8, the adhesion is too good, and the resist at the portion to be dissolved during development tends to remain.
- Table 1 shows that steels having different chemical compositions (Examples 1 to 4 and Comparative Examples 1 to 5) were degassed under vacuum, and the molten slab was hot-rolled. Shows the chemical composition of a plate.
- FT in Table 1 indicates the finishing temperature of the hot rolled sheet.
- These hot-rolled sheets were washed with sulfuric acid and cold-rolled to obtain cold-rolled sheets having a thickness of 0.2 to 0.3 mm. afterwards An annealing treatment was performed using a continuous annealing furnace, and the sheet thickness was reduced to 0.10 mm by cold rolling. During this cold rolling, a constant surface roughness was given to the rolling rolls to adjust the surface roughness Ra of the cold rolled sheet.
- Table 2 summarizes the characteristic test results for the test materials obtained in this way.
- the tensile test at installation Tron type tensile testing machine, creep elongation is using creep testing machine (manufactured by Tokai Seisakusho), by applying a load stress 2 9 4 N Roh mm 2, 4 5 5 X 6 0 minute hold in the air And the elongation (%) when three cycles of holding at 455 ° C for 20 minutes in the air with a load stress of 2 94 ⁇ 2 were measured and evaluated. did.
- This creep strength test evaluation was determined based on the following criteria. That is, if the creep elongation in the column of “Characteristics” for the aperture-grill material shown in Table 2 was “0.3% or less”, it was judged to be acceptable. The reason is that after the aperture grill is welded to the frame, heat treatment for blackening is performed. The test conditions for the aperture grill material were set so that the aperture grill could be maintained in tension without loosening even after the aperture grill was attached to the frame under tension. Things. Under these conditions, the creep elongation was measured after applying a load stress of 29 A NZmm 2 to the aperture grill material and holding it at 455 ° C for 60 minutes.
- the tapes that make up the aperture grill can be maintained in tension without loosening even after the aperture grille is installed in the picture tube.
- An aperture grill for a color picture tube can be obtained.
- the electron beam is prevented from being deflected by geomagnetism, and a clear color picture tube without distortion can be obtained.
- the surface roughness Ra was measured according to JIS B0601.
- the adhesion to the resist is as follows: After applying water-soluble casein so that the thickness after drying is 5 to 6 m, apply a grid with a cutter to reach the steel plate and forcibly peel off with cellophane tape The test was performed. A case where there was no peeling was judged as pass (indicated by ⁇ in Table 2), and a case where there was a peeled part was judged as failed (indicated by X in Table 2).
- the ABBA one Chiya one grill material, 2 9 4 over N Bruno mm 2 load stress, cold and heat retention 2 0 min at 4 5 5 ° C The elongation after three cooling cycles is set to 0.6% or less.
- the aperture is a daryl material that can cope with the aperture grille even after the aperture grille is incorporated into the picture tube.
- the magnetic properties were determined by annealing at 455 ° C for 10 minutes, followed by the Epstein method (primary winding). Then, measure the residual magnetic flux density B r (T) and coercive force He (A / m) using the method of applying a secondary winding and applying an external magnetic field (measurement applied a magnetic field of 796 AZm). B r (T) / He (A / m) was determined. It is desirable that this magnetic property be at least 0.0025. Characteristic evaluation results
- Table 2 shows that the product of the present invention is excellent in any of the above-mentioned characteristics. Therefore, as a comprehensive evaluation, a symbol of ⁇ or ⁇ is shown in the column of judgment. ⁇ or ⁇ indicates the acceptable range, the tensile strength is 75 OMPa or more, the creep elongation under the test conditions shown above is 0.3% or less, the magnetic property (Br / Hc) is 0.0025 or more, Surface roughness Ra (JIS
- B 0601 shows a material having a characteristic of 0.1 to 0.8 / xm or more in force and good adhesion to a resist.
- ⁇ particularly indicates the case where the magnetic properties (Br / Hc) are as excellent as 0.003 or more.
- the comparative examples that do not fall within the scope of the present invention are inferior in any of the above-mentioned characteristics, and therefore, are indicated by the symbol X or ⁇ as the overall evaluation.
- ⁇ indicates a case where the tensile strength is slightly inferior.
- the material for the aperture grille of the color picture tube of the present invention is excellent in etching properties, and particularly, the rigidity and tensile strength are enhanced by the solid solution strengthening effect of Si for handling.
- Aperture grille made of this material has high tensile strength, high temperature creep strength and adhesion to resist, and has excellent magnetic properties (Br / Hc). ), It is possible to obtain an aperture-grill type color picture tube without color shift on the screen.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003271163A AU2003271163A1 (en) | 2002-10-18 | 2003-10-10 | Material for aperture grill for color image receiving tube, aperture grill, and color image receiving tube |
US10/531,718 US20060214552A1 (en) | 2002-10-18 | 2003-10-10 | Material for aperture grill color image receiving tube, aperture grill, and color image receiving same |
EP03751437A EP1553200A4 (en) | 2002-10-18 | 2003-10-10 | MATERIAL FOR A STRIP MASK FOR A COLOR PIPE, STRIP MASK AND COLOR PIPES |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002303868A JP2004137563A (ja) | 2002-10-18 | 2002-10-18 | カラー受像管用アパーチャーグリル用素材、アパーチャーグリルおよびカラー受像管 |
JP2002/303868 | 2002-10-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004035849A1 true WO2004035849A1 (ja) | 2004-04-29 |
Family
ID=32105087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/013002 WO2004035849A1 (ja) | 2002-10-18 | 2003-10-10 | カラー受像管用アパーチャーグリル用素材、アパーチャーグリルおよびカラー受像管 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060214552A1 (ja) |
EP (1) | EP1553200A4 (ja) |
JP (1) | JP2004137563A (ja) |
KR (1) | KR20050050675A (ja) |
CN (1) | CN1705764A (ja) |
AU (1) | AU2003271163A1 (ja) |
WO (1) | WO2004035849A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6425953A (en) * | 1987-04-16 | 1989-01-27 | Nippon Mining Co | Shadow mask and its production |
WO2002000955A1 (fr) * | 2000-06-26 | 2002-01-03 | Toyo Kohan Co.,Ltd. | Materiau constitutif d'un masque perfore pour tube image |
JP2003183779A (ja) * | 2001-12-18 | 2003-07-03 | Toyo Kohan Co Ltd | 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 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5382870A (en) * | 1992-09-21 | 1995-01-17 | Bmc Industries, Inc. | Stackable aperture masks |
JP3033426B2 (ja) * | 1994-03-11 | 2000-04-17 | 日本鋼管株式会社 | レジスト密着性および耐銹性に優れた電子部品用Fe−Ni系合金薄板およびFe−Ni−Co系合金薄板とその製造方法 |
JP3646512B2 (ja) * | 1998-03-23 | 2005-05-11 | Jfeスチール株式会社 | 材質ばらつきが少なくかつ溶接部低温靱性に優れた高強度高靱性鋼材およびその製造方法 |
JP2001040451A (ja) * | 1999-07-29 | 2001-02-13 | Kawasaki Steel Corp | プレス成形用熱延鋼板 |
-
2002
- 2002-10-18 JP JP2002303868A patent/JP2004137563A/ja active Pending
-
2003
- 2003-10-10 CN CNA2003801015339A patent/CN1705764A/zh active Pending
- 2003-10-10 EP EP03751437A patent/EP1553200A4/en not_active Withdrawn
- 2003-10-10 AU AU2003271163A patent/AU2003271163A1/en not_active Abandoned
- 2003-10-10 WO PCT/JP2003/013002 patent/WO2004035849A1/ja not_active Application Discontinuation
- 2003-10-10 US US10/531,718 patent/US20060214552A1/en not_active Abandoned
- 2003-10-10 KR KR1020057006652A patent/KR20050050675A/ko not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6425953A (en) * | 1987-04-16 | 1989-01-27 | Nippon Mining Co | Shadow mask and its production |
WO2002000955A1 (fr) * | 2000-06-26 | 2002-01-03 | Toyo Kohan Co.,Ltd. | Materiau constitutif d'un masque perfore pour tube image |
JP2003183779A (ja) * | 2001-12-18 | 2003-07-03 | Toyo Kohan Co Ltd | 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 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1553200A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1553200A1 (en) | 2005-07-13 |
KR20050050675A (ko) | 2005-05-31 |
CN1705764A (zh) | 2005-12-07 |
AU2003271163A1 (en) | 2004-05-04 |
US20060214552A1 (en) | 2006-09-28 |
EP1553200A4 (en) | 2006-05-03 |
JP2004137563A (ja) | 2004-05-13 |
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