WO2000055383A1 - Materiau pour masque perfore, son procede de production, masque perfore et tube recepteur d'images - Google Patents
Materiau pour masque perfore, son procede de production, masque perfore et tube recepteur d'images Download PDFInfo
- Publication number
- WO2000055383A1 WO2000055383A1 PCT/JP2000/001402 JP0001402W WO0055383A1 WO 2000055383 A1 WO2000055383 A1 WO 2000055383A1 JP 0001402 W JP0001402 W JP 0001402W WO 0055383 A1 WO0055383 A1 WO 0055383A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- shadow mask
- ppm
- hot
- rolled
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
-
- 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
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
- C21D3/02—Extraction of non-metals
- C21D3/04—Decarburising
-
- 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
- C21D8/0226—Hot rolling
-
- 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
- C21D8/0257—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding
-
- 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 cold-rolled steel sheet as a shadow mask material used for a shadow mask used in a color picture tube, a method for manufacturing the same, a shadow mask using the cold-rolled steel sheet, and a picture tube incorporating the shadow mask. . Background art
- Cold rolled steel sheets which are materials for shadow masks, have conventionally been manufactured by the following manufacturing process. That is, low-carbon steel manufactured by a steel maker is pickled and cold-rolled to a predetermined thickness, then degreased, and then subjected to decarburization annealing in a box-type annealing furnace in a wet water atmosphere. The thickness of the final product was reduced by secondary cold rolling as needed.
- the cold rolled steel sheet manufactured by this manufacturing method is photoetched by an etching maker, annealed, pressed, and blackened, and then assembled into a picture tube.
- C in the original cold-rolled steel sheet is not sufficiently decarburized, it may cause poor etching and poor press forming.
- the amount of C after decarburization annealing is 0.000. It has been essential that the content be 15% or less, and more preferably 0.008%.
- Japanese Patent Application Laid-Open Nos. 56-139396, 2-196210, and 8-269692 have been proposed.
- Publication No. 7 has been proposed.
- the above publication describes the regulations of steel components and annealing conditions, etc. However, it was still insufficient to satisfy stable etching and press-forming properties for high definition.
- the present invention solves the above-mentioned problems of the prior art, and provides a shadow mask material having uniform and excellent etching properties and press moldability in a coil, a method for manufacturing the same, and a shadow using the cold-rolled steel sheet. It is an object of the present invention to provide a mask and a picture tube incorporating the shadow mask. Disclosure of the invention
- the material for the shadow mask of the present invention has a component of N ⁇ 0.030 weight. /. B: 5 ppm ⁇ B-1 1/14 X N ⁇ 30 ppm, and the balance is characterized by being composed of Fe and unavoidable impurities.
- the material for the shadow mask of the present invention has a component of C ⁇ 0.008 weight. /. , S i ⁇ 0.03% by weight, Mn: 0; ⁇ 0.5 wt%, P ⁇ 0.02 wt. /. , S ⁇ 0.02% by weight, A1: 0.01 ⁇ 0.07% by weight. / 0 , N ⁇ 0.03 0 weight. / o, B: 5 ppm ⁇ B-1 l / l 4 XN ⁇ 30 ppm, with the balance being Fe and unavoidable impurities.
- the components are contained in the relationship of N ⁇ 0.030% by weight, B: 5 ppm ⁇ B—11 1/14 XN ⁇ 30 ppm.
- the remainder of the slab consisting of Fe and unavoidable impurities was hot-rolled to three points or more, hot-rolled at a winding temperature of 540 to 680 ° C, and pickled. After cold rolling, the residual C content was 0.0008 weight in the continuous annealing process. / 0 or less.
- the components are C ⁇ 0.008% by weight and S i ⁇ 0.03% by weight. /. , Mn: 0.1-0.5 weight. /. , P ⁇ 0. 0 2 weight 0/0, S ⁇ 0. 0 2 weight. /. A1: 0.01 to 0.07 weight. /. , N ⁇ 0. 0 0 3 0 by weight 0/0, B: 5 ppm ⁇ B- ll / l 4 are contained in relation XN ⁇ 3 0 ppm
- a steel slab consisting of Fe and unavoidable impurities is hot-rolled at a point A or higher, the coiling temperature is 540 to 680 ° C, pickled, and cold-rolled. Then, in the continuous annealing process, the residual C content was 0.0008 weight. / 0 or less.
- the shadow mask of the present invention is characterized by using the shadow mask material.
- the picture tube according to the present invention is characterized in that the shadow mask is incorporated therein.
- FIG. 1 is a graph showing the relationship between the etching property and the relational expression between the B content and the N content.
- N in steel is desirable because it forms nitrides with A 1, reduces solute N and reduces the aging effect. Further, in order to ensure press moldability as a shadow mask material, it is necessary to minimize the amount, so that the upper limit is desirably 0.0030% by weight. More preferably, the weight is 0.0020 or less.
- B in steel has an excellent effect of etching as a shadow mask material because it makes the crystal grains of the thin copper plate uniform.
- the effect of the addition is remarkable in an ultra-thin shadow mask having a plate thickness of about 0.1 to 0.2 mm, which is used recently.
- B in steel is an element effective for fixing solid solution N, so it is desirable to add B.
- an excessive addition of B makes the crystal grains finer and impairs the magnetic properties.
- B is desirably contained in a range satisfying the above formula. That is, if the relationship between B and N is within this range, as shown in FIG. 1, it is understood that excellent etching properties are exhibited.
- a so-called ultra-thin shadow having a plate thickness of about 0.08 mm to 0.2 mm which is used in recent years, is used to regulate the following as a billet component as a raw material of a hot-rolled steel sheet.
- the amount of C in the hot-rolled steel sheet greatly affects the continuous annealing process for decarburization. If the content exceeds 0.0030% by weight, the decarburization in the continuous annealing process is not sufficient, and the shadow mask material In order to reduce the content to 0.08% by weight or less, the annealing temperature must be increased and the annealing time must be increased, resulting in an increase in production cost and a decrease in productivity. It is desirably 30% by weight. More preferably, the content is 0.0020% by weight or less.
- Si in the shadow mask material is an element that inhibits blackening in the blackening process in the manufacture of a picture tube, and a smaller amount is preferable, but it is an element that is inevitably contained in A1 killed steel. It is preferable that the upper limit is set to 0.03% by weight. More preferably, the weight is 0.02. / 0 or less.
- Mn in the hot-rolled steel sheet is used to prevent red hot brittleness during hot-rolling due to the impurity S. Since the ultrathin shadow mask material of the present invention is liable to crack during cold rolling, it is preferable to positively add a predetermined amount thereof. This effect is preferably added at 0.1% by weight or more, more preferably at 0.2% by weight or more. More preferably, it is at least 0.25% by weight.
- the content is preferably 0.5% by weight. It is more preferably at most 0.4% by weight. More preferably, it is 0.35 weight ⁇ 1 ⁇ 2 or less.
- the P in the shadow mask material has poor magnetic properties due to the refinement of crystal grains, and the smaller the P, the better. Particularly, the effect of the ultra-thin shadow mask material of the present invention is remarkable, and the content is preferably not more than 0.02% by weight.
- S in the hot-rolled steel sheet is an element that is inevitably contained, is an impurity component that causes red-hot embrittlement during hot rolling, and is desirably as small as possible. Since the ultrathin shadow mask material of the present invention is liable to crack during cold rolling, it is preferable to actively remove the material. This effect is preferably at most 0.02% by weight, more preferably at most 0.015% by weight. More preferably, the content is 0.01% by weight or less.
- A1 in the hot-rolled steel sheet is added to the steel bath as a deoxidizing agent during steelmaking and is removed as slag. However, if the added amount is small, a stable deoxidizing effect cannot be obtained. Also, it is preferable that A 1 is actively added to form a nitride of A 1 N during hot rolling and annealing to fix N and prevent aging due to solid solution N. In particular, it is preferable to add the ultrathin shadow mask material of the present invention to the ultrathin shadow mask material, because if the material contains impurities such as oxides, cracks are likely to occur during cold rolling. This effect is preferably added 0.0 1 wt 0/0 above. It is more preferably at least 0.015% by weight.
- the content is 0.05% by weight or less. More preferably, 0.04 weight. / 0 or less.
- Remaining part The remaining part does not regulate elements that are inevitably contained so as not to impair Fe and etching properties and press formability.
- the slab heating temperature and the hot rolling conditions are not specified in the present invention. However, if the slab heating temperature is lower than 110 ° C, the hot rollability deteriorates and the hot rolling temperature is secured. From the viewpoint, it is desirable that the temperature be higher than 110 ° C. On the other hand, if the slab heating temperature is too high, the decomposition and re-solid solution of the nitride will be promoted, so it is desirable that the temperature should not exceed 122 ° C.
- the lower limit of the winding temperature is preferably set at 540 ° C in consideration of the quality stability in the coil width direction and the longitudinal direction during hot rolling. On the other hand, if the temperature exceeds 680 ° C, the descaling property deteriorates. Therefore, it is desirable to set the temperature in the range of 540 to 680 ° C.
- Pickling and primary cold rolling may be performed under ordinary conditions.
- Continuous annealing step is an important step in the present invention, the plate temperature 7 5 0 ° C or higher, soaking time 6 0 seconds, the hydrogen concentration 0-7 5% annealing atmosphere, the remaining N 2 power 'in the scan, It is desirable to perform continuous annealing at a dew point of ⁇ 30 to 70 ° C. (Annealing temperature)
- Annealing temperature affects the decarburization efficiency and etchability.If it is less than 750 ° C, it takes a long time to decarburize, not only lowering the productivity, but also reducing the recrystallization texture after annealing. There is unevenness, and uniform etching properties cannot be obtained. Therefore, the annealing temperature is preferably set to 750 ° C or higher.
- the annealing time is preferably set to 60 seconds or more. If the time is less than 60 seconds, decarburization as an ultra-thin shadow mask material is insufficient, and it is difficult to reduce the target C content to 0.0008% or less.
- the upper limit is not particularly limited, but is preferably 120 seconds or less from the viewpoint of productivity and prevention of coarse grains.
- the C content of the ultra-thin shadow mask material can be reduced to 0.0008% or less. Even if the hydrogen concentration exceeds 70%, there is no difference in the decarburization time, and the cost is rather increased. Therefore, the upper limit is preferably set to 70%. If the dew point is within the range of 30 to 70 ° C, the C content of the ultra-thin shadow mask material can be reduced to 0.0008% or less.
- the rolling ratio of the secondary cold rolling after the annealing is preferably 4 :! to 90% in order to impart the necessary strength to the ultra-thin shadow mask material. If it is 40% or less, the required strength cannot be obtained, and if it is 91% or more, the number of times of rolling increases and the productivity decreases, so the upper limit is preferably made 90%.
- the second cold rolling a material having a final thickness of the ultra-thin shadow mask material of the present invention of 0.1 to 0.2 mm is obtained.
- a slab having the chemical composition shown in Table 1 was hot-rolled into a hot-rolled steel sheet of 2.3 mm, pickled and then cold-rolled to a thickness of 0 A 3 mm cold-rolled sheet was used. Thereafter, in a continuous annealing process, decarburization annealing was performed under various conditions. Table 2 shows the annealing conditions and the C content in the steel after annealing. Furthermore, an ultra-thin shadow mask material with a thickness of 0.1 mm was manufactured by cold rolling.
- Example 1 1 7 6 0 6 0 5 2 0 0.0007
- Example 2 1 7 7 5 6 0 5 2 0 0.0006
- Example 3 1 8 0 0 6 0 5 0 1 3 0 0.0005
- Example 4 2 7 7 5 6 0 5 2 0 0.
- FIG. 1 shows the results of evaluating the etching properties at this time. If the ordinate is the etching property and the abscissa is the relational expression between the B content and the N content, the etching property is as follows. Excellent results were obtained in the range of 0 Ppm.
- the etching becomes uneven in the etching process in the process of manufacturing the shadow mask, the shape of the etching holes becomes uneven, and the unevenness of the surface becomes large. Unless it is not more than 08%, satisfactory etching properties cannot be obtained. Also, if the amount of C is large, it becomes hard and the shape freezing property is deteriorated at the time of press forming, so that the amount of C must be similarly low.
- B has the effect of fixing N and preventing the occurrence of stretcher strain due to aging of solid solution N, and has the effect of homogenizing recrystallized grains, and has a large effect of stabilizing etching properties. Required amount.
- excessive addition results in high quality due to the refinement of crystal grains by B and deterioration of magnetic properties.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020017011376A KR20010112308A (ko) | 1999-03-12 | 2000-03-08 | 섀도우 마스크용 소재, 그 제조방법, 섀도우 마스크 및수상관 |
EP00907946A EP1172451B1 (en) | 1999-03-12 | 2000-03-08 | Material for shadow mask, method for production thereof, shadow mask and image receiving tube |
DE60006225T DE60006225T2 (de) | 1999-03-12 | 2000-03-08 | Material für schattenmaske, verfahren zu dessen herstellung, schattenmaske und bildempfangsröhre |
AU29388/00A AU2938800A (en) | 1999-03-12 | 2000-03-08 | Material for shadow mask, method for production thereof, shadow mask and image receiving tube |
US09/936,289 US6803712B1 (en) | 1999-03-12 | 2000-03-08 | Material for shadow mask, method for production thereof, shadow mask and image |
US10/410,306 US6946041B2 (en) | 1999-03-12 | 2003-04-10 | Material for shadow mask, method for production thereof, shadow mask and image receiving tube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6654299 | 1999-03-12 | ||
JP11/66542 | 1999-03-12 |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09936289 A-371-Of-International | 2000-03-08 | ||
US09/936,289 A-371-Of-International US6803712B1 (en) | 1999-03-12 | 2000-03-08 | Material for shadow mask, method for production thereof, shadow mask and image |
US10/410,306 Division US6946041B2 (en) | 1999-03-12 | 2003-04-10 | Material for shadow mask, method for production thereof, shadow mask and image receiving tube |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000055383A1 true WO2000055383A1 (fr) | 2000-09-21 |
Family
ID=13318906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/001402 WO2000055383A1 (fr) | 1999-03-12 | 2000-03-08 | Materiau pour masque perfore, son procede de production, masque perfore et tube recepteur d'images |
Country Status (8)
Country | Link |
---|---|
US (2) | US6803712B1 (ja) |
EP (1) | EP1172451B1 (ja) |
KR (1) | KR20010112308A (ja) |
CN (1) | CN1110575C (ja) |
AU (1) | AU2938800A (ja) |
DE (1) | DE60006225T2 (ja) |
TW (1) | TWI225101B (ja) |
WO (1) | WO2000055383A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102041444A (zh) * | 2010-12-21 | 2011-05-04 | 南阳汉冶特钢有限公司 | 一种低碳低硅优质碳素结构钢及其生产方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4102115B2 (ja) | 2002-06-12 | 2008-06-18 | 新日本製鐵株式会社 | 加工性、時効性及びほうろう特性が優れたほうろう用鋼板及びその製造方法 |
US7301623B1 (en) | 2003-12-16 | 2007-11-27 | Nanometrics Incorporated | Transferring, buffering and measuring a substrate in a metrology system |
CN100430511C (zh) * | 2005-06-30 | 2008-11-05 | 宝山钢铁股份有限公司 | 一次冷轧荫罩带钢及其制造方法 |
CN102719731B (zh) | 2012-06-28 | 2016-03-02 | 宝山钢铁股份有限公司 | 二次冷轧荫罩带钢及其制造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01136933A (ja) * | 1987-11-21 | 1989-05-30 | Nippon Steel Corp | 深紋り用冷延鋼板の製造方法 |
JPH02254139A (ja) * | 1989-03-28 | 1990-10-12 | Toyo Kohan Co Ltd | シャドウマスク用素材およびその製造法 |
JPH08269627A (ja) * | 1995-03-30 | 1996-10-15 | Kawasaki Steel Corp | シャドウマスク用冷延鋼板およびその製造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6191332A (ja) * | 1984-10-08 | 1986-05-09 | Nippon Steel Corp | 磁気シ−ルド性と黒化処理性のすぐれたシヤドウマスク用鋼板の製造方法 |
CA1331127C (en) * | 1988-10-07 | 1994-08-02 | Masaomi Tsuda | Method of producing fe-ni series alloys having improved effect for restraining streaks during etching |
EP0515954B1 (en) * | 1991-05-30 | 1996-01-10 | Hitachi Metals, Ltd. | High-fineness shadow mask material and process for producing the same |
JPH06264190A (ja) * | 1993-03-12 | 1994-09-20 | Toshiba Corp | シャドウマスク用素材 |
FR2728724B1 (fr) * | 1994-12-27 | 1997-01-24 | Imphy Sa | Procede de fabrication d'un masque d'ombre en alliage fer-nickel |
JPH1150149A (ja) * | 1997-07-29 | 1999-02-23 | Sumitomo Metal Ind Ltd | シャドウマスクフレーム用冷延鋼板の製造方法 |
JP3043701B2 (ja) * | 1998-02-06 | 2000-05-22 | 大日本印刷株式会社 | カラーブラウン管用の展張型マスクおよびその素材 |
-
2000
- 2000-03-06 TW TW089103943A patent/TWI225101B/zh not_active IP Right Cessation
- 2000-03-08 WO PCT/JP2000/001402 patent/WO2000055383A1/ja not_active Application Discontinuation
- 2000-03-08 CN CN00804868A patent/CN1110575C/zh not_active Expired - Fee Related
- 2000-03-08 DE DE60006225T patent/DE60006225T2/de not_active Expired - Fee Related
- 2000-03-08 KR KR1020017011376A patent/KR20010112308A/ko not_active Application Discontinuation
- 2000-03-08 AU AU29388/00A patent/AU2938800A/en not_active Abandoned
- 2000-03-08 EP EP00907946A patent/EP1172451B1/en not_active Expired - Lifetime
- 2000-03-08 US US09/936,289 patent/US6803712B1/en not_active Expired - Fee Related
-
2003
- 2003-04-10 US US10/410,306 patent/US6946041B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01136933A (ja) * | 1987-11-21 | 1989-05-30 | Nippon Steel Corp | 深紋り用冷延鋼板の製造方法 |
JPH02254139A (ja) * | 1989-03-28 | 1990-10-12 | Toyo Kohan Co Ltd | シャドウマスク用素材およびその製造法 |
JPH08269627A (ja) * | 1995-03-30 | 1996-10-15 | Kawasaki Steel Corp | シャドウマスク用冷延鋼板およびその製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1172451A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102041444A (zh) * | 2010-12-21 | 2011-05-04 | 南阳汉冶特钢有限公司 | 一种低碳低硅优质碳素结构钢及其生产方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1172451A1 (en) | 2002-01-16 |
DE60006225D1 (de) | 2003-12-04 |
US6946041B2 (en) | 2005-09-20 |
US20030175145A1 (en) | 2003-09-18 |
TWI225101B (en) | 2004-12-11 |
KR20010112308A (ko) | 2001-12-20 |
EP1172451B1 (en) | 2003-10-29 |
CN1343263A (zh) | 2002-04-03 |
AU2938800A (en) | 2000-10-04 |
US6803712B1 (en) | 2004-10-12 |
DE60006225T2 (de) | 2004-07-29 |
EP1172451A4 (en) | 2002-08-21 |
CN1110575C (zh) | 2003-06-04 |
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