CN1470668A - High-strength low heat-expansion Fe-Ni-Co series alloy thin band with good magnetic characteristic for shadow mask - Google Patents
High-strength low heat-expansion Fe-Ni-Co series alloy thin band with good magnetic characteristic for shadow mask Download PDFInfo
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- CN1470668A CN1470668A CNA031474292A CN03147429A CN1470668A CN 1470668 A CN1470668 A CN 1470668A CN A031474292 A CNA031474292 A CN A031474292A CN 03147429 A CN03147429 A CN 03147429A CN 1470668 A CN1470668 A CN 1470668A
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- 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
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- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
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Abstract
The present invention provides an Fe-Ni-Co alloy having high strength and a low coefficient of thermal expansion, along with excellent magnetic properties. The present invention provides an Fe-Ni-Co alloy thin strip for shadow masks having high strength and a low coefficient of, thermal expansion, along with excellent magnetic properties by controling the total content of the educt of 2-5Mum and the impurity in an range of 0.5Mug/m<3>-1.5Mug/m<3>, comprising, on a mass basis, 30 to 35% Ni, 2 to 6% Co, 0.1 to 0.4% Nb, 0.2 to 0.5% Mn, and the rest Fe and unavoidable impurities, wherein the unavoidable impurities includes 0.005% or less C, 0.002% or less S and 0.005% or less N and the grain size before etching through said strip is 7.0 to 10.0 in terms of grain size number stipulated in JIS G 0551.
Description
Technical field
The present invention relates to that a kind of to be used for the used Fe-Ni-Co of the effective shadow mask of drawing type shadow mask, particularly planar imaging be alloy thin band, the Fe-Ni-Co that is specifically related to a kind of intensity, thermal expansivity, etching and excellent in magnetic characteristics is an alloy thin band.
Background technology
Thin plate in recent years, aspect the watching easily of display image, the requirement of plane picture improved, even also can obtain intensity and is applied to shadow mask as high-strength material.For example, the spy opens that the 2001-262278 communique discloses with Ni:27%～47%, below the Co:22%, Nb:0.005%～0.1%, C: the composition of N:0.002%～0.02%, 0.000013≤[%Nb] [%N]≤0.002＜0.01%,, separate out fine niobium nitride in a large number, the granularity that makes grain fineness number be refined into JIS G0551 is numbered the close grain more than 10, so reaches the method for high strength.
In addition, international open 01/59169A1 has proposed to add up to 0.01%～0.8% by what add among Nb, Ta, the Hf more than one in the composition of Ni:30%～35%, Co:2%～8%, Mn:0.01%～0.5%, improves the method for yield strength and Young's modulus etc.
With 36%Ni-Fe alloy phase ratio, can expect that the little and Fe-Ni-Co low thermal deflection of thermal expansivity is an alloy, the electron beam incident angle that begins to be used for the picture end is the effective shadow mask of planar imaging of acute angle, as large-scale planar imaging pipe material for shadow mask more than 19 inches, can use material by element high strengths such as interpolation Nb.Large-scale in this way picture tube, electron beam is owing to the effect of external magnetic field departs from from original electron beam orbit, this phenomenon is commonly referred to as magnetic deflection, its offset dimensions must increase in the picture end, with 36%Ni-Fe alloy phase ratio, Fe-Ni-Co be alloy except that magnetic properties originally with regard to poor, also easily form carbide, nitride, carbonitride for reaching the elements such as Nb that high strength adds, it is disclosed to open 2001-262278 as the spy, for example by 800～900 ℃ of ageing treatment several hours, fine precipitate is separated out in a large number, can cause that magnetic deflection obviously increases.So-called herein magnetic deflection, be meant cathode-ray picture tube in the AC magnetic field degaussing, in case produce magnetic field by earth magnetism magnetization, thereby make electron beam depart from the phenomenon of original track thus, shield as it with covered cathode ray picture tube front and shadow mask on every side and inner shield.Therefore, when the magnetic properties of material for shadow mask worsens, owing to must become to guarantee originally magnetic shielding by thickening shadow mask and inner shield material, increasing, so press for the shadow mask high-strength material of excellent in magnetic characteristics.
Summary of the invention
The present invention be directed to the problems referred to above and propose, the Fe-Ni-Co that purpose provides the low thermal coefficient of expansion of a kind of intensity height, excellent in magnetic characteristics is an alloy.
The magnetic shielding of shadow mask utilizes the heat treated material of having implemented to be equivalent to the preceding softening annealing of punching press, can estimate according to the coercive force of direct current magnetic properties.For example, with maximum field 795A/m (=100e) measure 850 ℃ of insulations 15 minutes and during by about 40 ℃ of/minute refrigerative materials, if coercive force below 50A/m, the material for shadow mask that can use as large-scale picture tube more than 19 inches without a doubt.In addition, after this thermal treatment, if 0.2% yield strength more than 300MPa, endurance to external impacts is good, if 25 ℃～150 ℃ mean thermal expansion coefficients is 1.2 * 10
-6/ ℃ below, also can the no problem material for shadow mask of thermal deflection.
So for satisfying above-mentioned characteristic, the inventor etc. are alloy with regard to the Fe-Ni-Co that contains Nb,, studied the maximum validity of element solid solution to intensity and magnetic properties as the method that under the condition that does not reduce its intensity, improves magnetic properties.Found that, by being controlled at suitable scope as Nb, Mn, C, S and the N in carbide, nitride, sulfide and their compound sources, can suppress the precipitate amount, make its solution strengthening, state before state before punching press annealing is etching and punching is set in grain fineness number effective than big purpose optimum range.
That is, one of of the present invention being, is the terminal stage that alloy is made at Fe-Ni-Co of the present invention, and grain growing and carbide, nitride etc. are separated out and interrelated, and handles by grain growth and can suppress to separate out, and the result has utilized the phenomenon of promotion solid solution.Separate out as grain growth and inhibition, common intensity reduces, and still, in alloy system of the present invention, by solution strengthening, can reach more than the 300MPa with 0.2% yield strength.In addition, if crystal grain is bigger, can improve magnetic properties.
In addition, of the present invention two are, are conceived to the precipitate amount determined in above-mentioned phenomenon, reduce the precipitate amount as far as possible.Few as the precipitate amount, generally can reduce precipitation-hardening, but, can reach more than the 300MPa with 0.2% yield strength mainly by the solution strengthening of Nb.Though solid solution Nb itself does not directly improve magnetic properties, the minimizing of few precipitate amount and inclusion amount has improved magnetic properties indirectly.
In addition, be to find in the alloy at Fe-Ni-Co, by making the Si solid solution, help directly reducing coercive force.
That is, the present invention is as follows:
(1) a kind of shadow mask of excellent in magnetic characteristics is an alloy thin band with high strength and low thermal expansion Fe-Ni-Co, it is characterized in that: press quality percentage, form by Ni:30%～35%, Co:2%～6%, Nb:0.1%～0.4%, Mn:0.2%～0.5%, surplus Fe and unavoidable impurities, in unavoidable impurities, below the C:0.005%, below the S:0.002%, below the N:0.005%, and the grain fineness number before the etching and punching, pressing the grain fineness number numbering of JIS G 0551 regulation, is 7.0～10.0.
(2) a kind of shadow mask of excellent in magnetic characteristics is an alloy thin band with high strength and low thermal expansion Fe-Ni-Co, it is characterized in that: press quality percentage, form by Ni:30%～35%, Co:2%～6%, Nb:0.1%～0.4%, Mn:0.2%～0.5%, surplus Fe and unavoidable impurities, in unavoidable impurities, C:0.005% is following, S:0.002% following, below the N:0.005%, and the total amount of 0.2 μ m～5 μ m precipitates, inclusion is 0.5 μ g/mm
3～1.5 μ g/mm
3
(3) shadow mask as each described excellent in magnetic characteristics in above-mentioned (1) or (2) is an alloy thin band with high strength and low thermal expansion Fe-Ni-Co, it is characterized in that: contain 0.03%～0.10% Si with solid solution condition.
Embodiment
Describe embodiments of the present invention below in detail.
Fe-Ni-Co of the present invention is that the characteristics of alloy are, is that alloy is implemented in the solid solution that intensity and magnetic properties aspect are effectively used elements such as Nb to greatest extent with Fe-Ni-Co.Be controlled at the optimum range that solution strengthening is given full play to by content, reduce the impurity element amount that becomes the precipitate source, realize that two of intensity and magnetic properties are upright Nb.In addition, except that carrying out the composition adjustment, preferably by thermal treatment again the solid solution precipitate to reduce the precipitate amount.
In addition, be that the grain fineness number of alloy is set to suitable size by Fe-Ni-Co of the present invention, can realize that after final calendering intensity and magnetic properties two are upright.
Si is not as precipitate and inclusion, and existence more helps magnetic properties as solid solution Si.
Solid solution capacity about Si, utilize the square surface of SIMS (2 secondary ion mass spectroscopy) scanning 100 μ m, to there not being the local position that detects the part (precipitate or inclusion) of Si in a large number, further to analyze, the quantitative values the when concentration range of Si is not had big variation is as solid solution capacity.
In addition, with following method quantitative evaluation precipitate and inclusion amount.
In 10v/v% methyl ethyl diketone-1v/v% tetramethyl ammonium chloride-methyl alcohol electrolytic solution, flood alloy thin band, use current density 400A/m
2With interior constant current electrolysis (electric weight of 3360 coulombs/g of two plate) dissolving 10g.Dissolved solution at first filters with the membrane filter of aperture 5 μ m, and filtrate is filtered with the membrane filter of aperture 0.2 μ m again, and after the drying, the increase quality of 0.2 μ m membrane filter is as the amount of 0.2 μ m～5 μ m precipitates and inclusion.
Remove this quality with volume of dissolution, obtain the 0.2 μ m～5 μ m precipitates of unit volume and the amount of inclusion.
Adopt aforesaid method, the precipitate and the inclusion that become filtration residue are NbN, NbC, MnS, Al
2O
3, SiO
2, the minuteness particle of MnO, MgO and their mixtures etc. and their bunch shape polymer, that its polymeric form has is spherical, ellipticity, bar-shaped etc. multiple, but size about precipitate among the present invention and inclusion, use commentary valency method, after electrolysis, determine whether to filter with the membrane filter of regulation mesh.
The following qualification reason of explanation composition of the present invention etc.
Nb: if the Nb amount is few, does not rely on precipitate and can not fully improve intensity, magnetic properties worsens.On the other hand, if the Nb amount too much, thermal expansivity increases.Therefore, Nb content is decided to be 0.1%～0.4%.
Mn: if the Mn amount is few, because the grain boundary segregation of S and nickelous sulfide can not prevent that hot workability from worsening.In addition, if the Mn amount is many, thermal expansivity increases, and a large amount of MnS worsens magnetic properties.Therefore, Mn content is decided to be 0.2%～0.5%.
C: if the C amount is many, carbide and carbonitride increase, and magnetic properties is worsened.Therefore, C content is decided to be below 0.005%.
S: if the S amount is many, cause thermal crack easily, a large amount of MnS of generation worsen magnetic properties.Therefore, S content is decided to be below 0.0020%, preferably is lower than 0.0010%.
N: if the N amount is many, nitride and carbonitride increase, and magnetic properties is worsened.Therefore, N content is decided to be below 0.005%.
Si: if Si exists with solid solution Si, the many more magnetic propertiess of its content are good more.Its effect be lower than 0.03% o'clock little.In addition, if but surpass 0.10%, along with the increase of thermal expansivity, generate a large amount of etching dirts, stop up the etching nozzle easily.Therefore, Si content is decided to be 0.03%～0.10%.
Grain fineness number: press JIS G 0551 grain fineness number numbering, if the grain fineness number before the etching and punching is lower than 7.0, because grain fineness number is excessive, etching forms the picture entry, and as the undercapacity of shadow mask, endurance to external impacts weakens.If grain fineness number surpasses 10.0,, can not obtain enough magnetic shieldings even reduce precipitate because crystal grain is too small.Therefore, press JIS G 0551 grain fineness number numbering, its suitable scope is 7.0～10.0.
Precipitate and inclusion: exist in the alloy at Fe-Ni-Co of the present invention: though when dissolving generate and in operation thereafter shape change the Al that almost not have variation on the amount with viscous deformation
2O
3, SiO
2, MgO, MnO and their compound, mixture; Though a certain amount of when reaching casting solidification, NbC, the NbN and their compound and the MnS etc. that change on the annealing equivalent through thereafter hot worked heating and cold rolling.Hinder that the magnetic wall shift is moving, the size of the precipitate that influence magnetic properties and inclusion is smaller, if but above 5 μ m, can ignore its influence.In addition, be difficult to correct precipitate and the inclusion that is lower than 0.2 μ m of holding, experiment is found can judge that by the 0.2 μ m～precipitate of 5 μ m and the amount of inclusion magnetic properties very denys.The few more magnetic properties of the precipitate of this scope and inclusion is good more, but along with minimizing, intensity slowly descends.Therefore, the precipitate of this scope and inclusion are generally at 0.5 μ g/mm
3～1.5 μ g/mm
3, more preferably at 0.5 μ g/mm
3～1.0 μ g/mm
3Scope, help making magnetic properties and intensity two upright.
Embodiment
The present invention is described by the following examples.
With the regulation raw material of the fusing of VIM method, casting composition as shown in table 1, make the ingot casting of about 500kg.Then, more than 5 hours, forge into the thick chunk of about 100mm in the heating of 1250 ℃～1300 ℃ scopes, 1150 ℃～1250 ℃ of the post-heating of stripping off the skin carry out hot rolling, obtain the thick hot-rolled sheet of about 3mm.The iron scale of hot-rolled sheet is removed in pickling, and cold rolling repeatedly then and annealing obtains the thick strip of 0.15mm at last.In being rolled down to the preceding annealing (=final annealing) of 0.15mm thick cold rolling (=finally cold rolling), make material reach temperature in 800 ℃～1100 ℃ scope, by approximately surpassing under the temperature of recrystallization temperature more than 700 ℃, material insulation 5～60 seconds makes crystal grain footpath and precipitate quantitative changeization.That is, low if material arrives temperature, short in the above soaking time of recrystallization temperature, the relation that crystal grain reduces, precipitate increases, solid solution capacity reduces is then arranged.No.1～the No.8 of the embodiment of the invention, material arrive temperature at 1000 ℃～1100 ℃, and the above soaking time of recrystallization temperature is adjusted in 15～40 seconds scope.Final cold rolling reduction settings is 25%, but is preferably in 15%～45% the scope.
Table 1
| Composition No | ????C | ??Mn | ????S | ??Ni | ???Co | ???Nb | ????N |
| ????A | ??0.002 | ??0.22 | ?0.0008 | ??32.1 | ??5.0 | ??0.32 | ?0.0028 |
| ????B | ??0.004 | ??0.25 | ?0.0012 | ??32.0 | ??4.9 | ??0.11 | ?0.0022 |
| ????C | ??0.001 | ??0.32 | ?0.0015 | ??32.5 | ??5.0 | ??0.25 | ?0.0022 |
| ????D | ??0.004 | ??0.37 | ?0.0006 | ??31.8 | ??4.0 | ??0.22 | ?0.0024 |
| ????E | ??0.003 | ??0.32 | ?0.0010 | ??33.5 | ??3.4 | ??0.28 | ?0.0023 |
| ????F | ??0.004 | ??0.27 | ?0.0007 | ??32.1 | ??5.0 | ??0.25 | ?0.0036 |
| ????G | ??0.003 | ??0.27 | ?0.0005 | ??32.0 | ??4.9 | ??0.25 | ?0.0032 |
| ????H | ??0.004 | ??0.25 | ?0.0012 | ??32.0 | ??4.9 | ??0.11 | ?0.0022 |
| ????I | ??0.008 | ??0.26 | ?0.0012 | ??32.8 | ??4.2 | ??0.15 | ?0.0042 |
| ????J | ??0.004 | ??0.15 | ?0.0018 | ??32.1 | ??5.4 | ??0.25 | ?0.0028 |
| ????K | ??0.003 | ??0.55 | ?0.0015 | ??32.2 | ??5.1 | ??0.30 | ?0.0032 |
| ????L | ??0.003 | ??0.28 | ?0.0026 | ??32.0 | ??4.3 | ??0.31 | ?0.0035 |
| ????M | ??0.003 | ??0.25 | ?0.0015 | ??36.1 | ??1.5 | ??0.30 | ?0.0032 |
| ????N | ??0.004 | ??0.02 | ?0.0013 | ??32.1 | ??9.5 | ??0.06 | ?0.0028 |
| ????O | ??0.003 | ??0.25 | ?0.0015 | ??32.4 | ??5.1 | ??0.45 | ?0.0034 |
| ????P | ??0.003 | ??0.26 | ?0.0013 | ??29.3 | ??5.2 | ??0.10 | ?0.0067 |
| ????Q | ??0.003 | ??0.27 | ?0.0017 | ??32.0 | ??5.1 | ??0.01 | ?0.0032 |
In addition, about the material for shadow mask of making, in investigation solid solution Si amount, grain fineness number numbering (GS.No), precipitate amount and etching, at 8%H
2-N
2850 ℃ are incubated 15 minutes in the shielding gas, cool off by about 40 ℃/minute, estimate coercive force, 0.2% yield strength, thermal expansivity (25 ℃～150 ℃ mean thermal expansion coefficientses) then.
In addition, about etching, the optical lithography of application of known in the alloy band that above-mentioned operation is made has the round shape peristome of a plurality of diameter 80 μ m on the single side surface that cuts into the square strip of 50mm, on the opposing party's surface
Form the mask against corrosion of the circular open portion of a plurality of diameter 180 μ m on the relative position, then, blow atomisation at 50 ℃ of ferric chloride in aqueous solution with 45 Baumes, form the hole, observe etched form, the ferric chloride in aqueous solution after the while filtered etch, the generating capacity of observation dirt.
Measurement result sees Table 2.
Table 2
| ????No | Composition No | Solid solution Si (%) | ??GS ??No | Precipitate amount (μ g/mm 3) | Coercive force (A/m) | Yield strength 0.2% (MPa) | Thermal expansivity (10 -6/℃) | Etching | |
| ????1 | ????A | ????0.05 | ??8.3 | ????1.2 | ????41 | ????326 | ????1.0 | No problem | Example |
| ????2 | ????B | ????0.04 | ??9.6 | ????1.3 | ????44 | ????332 | ????0.9 | No problem | |
| ????3 | ????C | ????0.05 | ??8.5 | ????0.9 | ????38 | ????322 | ????1.0 | No problem | |
| ????4 | ????D | ????0.07 | ??8.0 | ????1.0 | ????39 | ????324 | ????1.0 | No problem | |
| ????5 | ????E | ????0.05 | ??7.6 | ????1.1 | ????38 | ????318 | ????1.1 | No problem | |
| ????6 | ????F | ????0.02 | ??7.9 | ????1.1 | ????48 | ????328 | ????1.0 | No problem | |
| ????7 | ????G | ????0.12 | ??7.7 | ????1.2 | ????40 | ????338 | ????1.2 | Dirt is many | |
| ????8 | ????H | ????0.04 | ??9.6 | ????0.7 | ????35 | ????317 | ????0.9 | No problem | |
| ????9 | ????A | ????0.05 | ??10.3 | ????1.2 | ????58 | ????338 | ????1.2 | No problem | Comparative example |
| ???10 | ????B | ????0.05 | ??6.6 | ????1.1 | ????32 | ????287 | ????1.0 | Draw entry | |
| ???11 | ????I | ????0.05 | ??8.1 | ????1.7 | ????55 | ????327 | ????1.2 | No problem | |
| ???12 | ????J | ????0.05 | ??8.6 | ????1.3 | ????52 | ????325 | ????0.9 | No problem | |
| ???13 | ????K | ????0.05 | ??8.6 | ????1.6 | ????49 | ????322 | ????1.7 | No problem | |
| ???14 | ????L | ????0.05 | ??8.0 | ????1.8 | ????58 | ????331 | ????1.1 | No problem | |
| ???15 | ????M | ????0.05 | ??8.0 | ????1.5 | ????46 | ????290 | ????2.2 | No problem | |
| ???16 | ????N | ????0.05 | ??8.0 | ????0.6 | ????29 | ????302 | ????1.9 | No problem | |
| ???17 | ????O | ????0.05 | ??9.7 | ????1.9 | ????62 | ????338 | ????1.4 | No problem | |
| ???18 | ????P | ????0.05 | ??8.3 | ????1.2 | ????59 | ????342 | ????1.6 | No problem | |
| ???19 | ????Q | ????0.04 | ??7.9 | ????0.7 | ????28 | ????280 | ????1.1 | No problem |
The embodiment of the invention all has good coercive force, thermal expansivity, etching.In addition; No.6 among the present invention (alloy F), No.7 (alloy G) are the embodiment that solid solution Si amount exceeds the claimed scope 4 of the present invention; compare with other the present invention; No.6 is because solid solution Si amount is few; coercive force is not so good; No.7 is because solid solution Si amount is many, and thermal expansivity is big, and the dirty generating capacity of the thing during etching is many.
In addition; No.9 (alloy A), No.10 (alloy B) are the embodiment that the grain fineness number before the etching and punching exceeds the claimed scope 1,3 of the present invention; No.9 is because the grain fineness number numbering is excessive; coercive force is bad; No.10 is because the grain fineness number numbering is too small; 0.2% yield strength can not satisfy the shock-resistance requirement, and the hole of etching and punching shape is the picture entry simultaneously.No.11 (alloy I)～No.19 (alloy Q) is the embodiment that certain composition exceeds the claimed scope 1,2 of the present invention, and No.11 is because the C amount is too much, and No.12 is because the Mn amount is very few, and coercive force is big.The reason that the No.12 coercive force is big can be thought solid solution Mn deficiency.No.13 is because the Mn amount is too much, and thermal expansivity is big, can not satisfy caloritropic requirement.No.14 is because the S amount is too much, and precipitate increases, and coercive force increases.Because No.15 Ni and Co, No.16 Co, No.18 Ni exceed the claimed scope 1,2 of the present invention, thermal expansivity is big, can not satisfy caloritropic requirement.In addition, No.18 is because the N amount is too much, and precipitate increases, and coercive force also increases.No.17 is because the Nb amount is too much, and precipitate increases, and coercive force also increases, and thermal expansivity is also big simultaneously.No.19 is because the Nb amount is very few, and 0.2% yield strength can not satisfy the shock-resistance requirement.
More than, comparing with the present invention, comparative example No.9～No.19 is as the effective shadow mask of planar imaging, and particularly there is variety of issue in 19 o'clock above large-scale picture tube shadow mask materials.
Adopt the present invention, it is alloy thin band with Fe-Ni-Co that the shadow mask of a kind of anti-external impact, excellent in magnetic characteristics can be provided.Thus, particularly adopting large-scale picture tube or loud speaker more than 19 inches, with with the mode of cathode-ray picture tube adjacency, because can be than general thickness attenuate shadow mask, in inner shield and circuit modifications, do not increase unnecessary cost again, so can reduce the manufacturing cost of cathode-ray picture tube.
Claims (4)
1. the shadow mask of an excellent in magnetic characteristics is an alloy thin band with high strength and low thermal expansion Fe-Ni-Co, it is characterized in that: press quality percentage, form by Ni:30%～35%, Co:2%～6%, Nb:0.1%～0.4%, Mn:0.2%～0.5%, surplus Fe and unavoidable impurities, in unavoidable impurities, below the C:0.005%, below the S:0.002%, below the N:0.005%, and the grain fineness number before the etching and punching, pressing the grain fineness number numbering of JIS G 0551 regulation, is 7.0～10.0.
2. the shadow mask of an excellent in magnetic characteristics is an alloy thin band with high strength and low thermal expansion Fe-Ni-Co, it is characterized in that: press quality percentage, form by Ni:30%～35%, Co:2%～6%, Nb:0.1%～0.4%, Mn:0.2%～0.5%, surplus Fe and unavoidable impurities, in unavoidable impurities, C:0.005% is following, S:0.002% following, below the N:0.005%, and the total amount of 0.2 μ m～5 μ m precipitates, inclusion is 0.5 μ g/mm
3～1.5 μ g/mm
3
3. the shadow mask of excellent in magnetic characteristics as claimed in claim 2 is an alloy thin band with high strength and low thermal expansion Fe-Ni-Co, it is characterized in that: the grain fineness number before the etching and punching, and press the grain fineness number of JIS G 0551 regulation and number, be 7.0～10.0.
4. the shadow mask as each described excellent in magnetic characteristics in the claim 1～3 is an alloy thin band with high strength and low thermal expansion Fe-Ni-Co, it is characterized in that: contain 0.03%～0.10% Si with solid solution condition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002202177 | 2002-07-11 | ||
| JP2002202177A JP2004043879A (en) | 2002-07-11 | 2002-07-11 | HIGH STRENGTH LOW THERMAL EXPANSION Fe-Ni-Co BASED ALLOY THIN STRIP FOR SHADOW MASK HAVING EXCELLENT MAGNETIC PROPERTY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1470668A true CN1470668A (en) | 2004-01-28 |
| CN1215189C CN1215189C (en) | 2005-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031474292A Expired - Fee Related CN1215189C (en) | 2002-07-11 | 2003-07-10 | High-strength low heat-expansion Fe-Ni-Co series alloy thin band with good magnetic characteristic for shadow mask |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20040241035A1 (en) |
| JP (1) | JP2004043879A (en) |
| KR (1) | KR100517771B1 (en) |
| CN (1) | CN1215189C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220535A (en) * | 2011-06-07 | 2011-10-19 | 江苏大学 | Zero expansion composite material |
| CN106158218A (en) * | 2015-05-14 | 2016-11-23 | Tdk株式会社 | Soft magnetic metal powder and soft magnetic metal compressed-core |
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| JP5570136B2 (en) * | 2008-04-28 | 2014-08-13 | キヤノン株式会社 | Alloy and alloy manufacturing method |
| JP6788852B1 (en) * | 2019-10-08 | 2020-11-25 | 大日本印刷株式会社 | Metal plate manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100259299B1 (en) * | 1998-04-21 | 2000-06-15 | Lg Electronics Inc | Shadow mask of color cathode ray tube and method for fabricating the same |
| TWI250216B (en) * | 2000-02-09 | 2006-03-01 | Nippon Mining Co Ltd | Fe-Ni-Co alloy for completely flat mask of press-formed type, and completely flat mask and color cathode-ray tube using the same |
| EP1134300A3 (en) * | 2000-03-17 | 2002-05-22 | Hitachi Metals, Ltd. | Fe-Ni alloy |
| JP3557395B2 (en) * | 2000-12-27 | 2004-08-25 | 日鉱金属加工株式会社 | Method for producing Fe-Ni alloy material for press-molded flat mask |
-
2002
- 2002-07-11 JP JP2002202177A patent/JP2004043879A/en active Pending
-
2003
- 2003-07-08 KR KR10-2003-0046099A patent/KR100517771B1/en not_active IP Right Cessation
- 2003-07-08 US US10/614,100 patent/US20040241035A1/en not_active Abandoned
- 2003-07-10 CN CNB031474292A patent/CN1215189C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220535A (en) * | 2011-06-07 | 2011-10-19 | 江苏大学 | Zero expansion composite material |
| CN102220535B (en) * | 2011-06-07 | 2013-01-23 | 江苏大学 | Zero expansion composite material |
| CN106158218A (en) * | 2015-05-14 | 2016-11-23 | Tdk株式会社 | Soft magnetic metal powder and soft magnetic metal compressed-core |
| CN106158218B (en) * | 2015-05-14 | 2018-05-29 | Tdk株式会社 | Soft magnetic metal powder and soft magnetic metal compressed-core |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040007272A (en) | 2004-01-24 |
| KR100517771B1 (en) | 2005-09-28 |
| CN1215189C (en) | 2005-08-17 |
| US20040241035A1 (en) | 2004-12-02 |
| JP2004043879A (en) | 2004-02-12 |
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Owner name: NIKKO METAL MFG. CO., LTD. Free format text: FORMER OWNER: NIPPON MINING AND METALS CO., LTD. |
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Effective date of registration: 20050218 Address after: Kanagawa Applicant after: Nippon Mining Co. Co-applicant after: Japan Steel Works, Ltd. Address before: Tokyo, Japan Applicant before: Nippon Mining & Metals Co., Ltd. Co-applicant before: Japan Steel Works, Ltd. |
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