CN1393574A - High-strength alloy strip for corroding plane screen frame with fine perforating permanent - Google Patents
High-strength alloy strip for corroding plane screen frame with fine perforating permanent Download PDFInfo
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- CN1393574A CN1393574A CN02108079A CN02108079A CN1393574A CN 1393574 A CN1393574 A CN 1393574A CN 02108079 A CN02108079 A CN 02108079A CN 02108079 A CN02108079 A CN 02108079A CN 1393574 A CN1393574 A CN 1393574A
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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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- 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
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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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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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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- Organic Chemistry (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
The invention develops a high strength Fe-Ni-Co based or Fe-Ni based alloy strip for a flat mask which has excellent etching pierceability. In an Fe-Ni-Co based alloy having a composition containing, by mass, 4.0 to 6.0% Co and 36.0 to 38.0% Ni+Co, and the balance Fe with inevitable impurities, or an Fe-Ni based alloy having a composition containing 35.0 to 37.0% Ni, and the balance Fe with inevitable impurities, 0.05 to 0.40% Nb is further incorporated, and the content of O as inevitable impurities is <=0.0050%. The composition of inclusions of a >=10 mu m length present in the cross section parallel to the rolling direction before etching piercing consists of multiple oxide of niobium oxide and oxide containing at least one or more kinds selected from Al and Si.
Description
Technical field
The present invention relates to the shape of the electron beam penetrating component of shadow mask is made pure flat (here, so-called pure flat, mean that its front glass is the planar situation under situation about being assembled on the cathode-ray picture tube, comprise that also mask has the situation of very large radius-of-curvature and only has the situation of curvature in one direction), even do not take alloy doming effect, that have low heat expansion property as not producing yet, relate to the alloy that in corrosion, has good corrosion failure as its manufacturing process with high briliancy raising electron beam intensity.
Background technology
In the color cathod-ray picture tube, by display frame on the phosphor body that will strike the face glass inboard by the electron beam that electron beam gun penetrates.Direction by the magnetic force controlling electron beam is the deflection yoke, establishes the mechanism that is divided into pixel unit in the front of face glass, is called mask or color separation mechanism, so that electron beam impinges upon on the phosphor body of regulation.The generation type of the mask that the color cathod-ray picture tube is used roughly is divided into shadow mask mode and opening grid (aperture egrill) mode, carrying out drawing after shadow mask is processed into the mask material corrosion point-like or stitches shape forms, the opening grid is after corrosion processing becomes the braid shape, stretches and is erected on the frame material applying very big tension force on the above-below direction again.Variety of way respectively possesses some good points and weakness, and any mode all has employing on market.
Up to now, it is main flow that the picture of cathode-ray picture tube is made the spherical structure with certain curvature, but require to have the cathode-ray picture tube of plane picture, the reflection of the illumination of the distortion of this plane picture picture when oblique direction is seen and fluorescent lamp etc. is few always.Under this situation, shadow mask with drawing type of this very big advantage of frame material that does not need to set up usefulness, owing to can not keep intensity by the frame material that sets up usefulness, so in order to improve the shape hold facility of self, add high strength unit and usually improve intensity, with radius-of-curvature increase very large flat tube with mask practical application.
But, such situation has appearred, even add to improve the element nb of intensity, and when corrosion failure, see through and produce the very big bad occurrence frequency height of corrosion such as concavo-convex on the crooked or wall that is being corroded of the shape in hole of electron beam.
About the corrosion failure of shadow mask, the past just sees and has been to improve the motion that degree of irregularity is an object.For example, open among the clear 61-190032, proposed by in the Ni-Fe alloy, stipulating its carbon content can to reduce scheme to the deleterious carbide of corrosion failure the spy.This is because reduce carbide, makes the erosional surface cunning that flattens, the cause of the concavo-convex disappearance in grain boundary.But, add in the shadow mask as the element nb that improves intensity, corroding bad state is not the big this level of degree of irregularity, owing to the corrosion that is spot is bad, even reduce the forming element of the tiny precipitate of this carbon etc., can not fully satisfy the requirement that improves corrosion failure.
Summary of the invention
For increasing the radius-of-curvature of punching press type shadow mask, in other words, become the plane in order to make it, must improve the strength of materials, therefore, we can say and must add Nb.But, compare with the material that does not add Nb, the electron beam through hole becomes ellipse mostly during corrosion failure, distinguishes after this part is investigated, at the niobium oxide of most bad partial memory in Nb and 0 formation.As mentioned above, must add Nb,, just become the problem when the good plane screen frame of corrosion failure is provided with alloy so how to make niobium oxide become harmless object for improving intensity.
The present inventor has studied not only without detriment to characteristics such as intensity with great concentration, but also has made niobium oxide become the method for harmless object.At this moment, having considered to make oxygen level extremely low, is below 0.0020%, can make niobium oxide innoxious, even but the also remaining big niobium oxide of the oxygen amount of this degree.So, becoming the complex inclusion that constitutes by niobium oxide and other oxide compound to making inclusion, the problem that whether can reduce the size of per 1 inclusion is studied.Effect to the oxide compound forming element of sneaking into inevitably in melt raw material is investigated, and finds the occasion of the oxide compound a kind or more of compound oxide compound in containing Al, Si at least, and corrosion failure is good.The composite oxides of the complex inclusion of aluminum oxide and niobium oxide and silicon-dioxide and niobium oxide are all much smaller than niobium oxide monomer, and therefore, deduction can improve corrosion failure.
Like this, the present invention is:
(1) the good plane screen frame high-strength alloy strip of a kind of corrosion failure, its characteristics are, according to mass percent (%), by Co:4.0%～6.0%, Ni+Co:36.0%～38.0%, all the other are in the Fe-Ni-Co class alloy of Fe and unavoidable impurities formation, also contain Nb 0.05%～0.40%, and, oxygen in the unavoidable impurities is below 0.0050%, and the length that is present in before the corrosion failure on the rolling parallel cutting surfaces is that the above inclusion composition of 10 μ m is niobium oxide and contains Al at least, the composite oxides of the oxide compound more than a kind among the Si.
(2) the good plane screen frame high-strength alloy strip of a kind of corrosion failure, its characteristics are, according to mass percent (%), in by Ni:35.0%～37.0%, Fe-Ni class alloy that all the other constitute for Fe and unavoidable impurities, also contain Nb:0.05%～0.40%, and, oxygen in the unavoidable impurities is below 0.0050%, and the length that is present in before the corrosion failure on the rolling parallel cutting surfaces is that the above inclusion composition of 10 μ m is niobium oxide and the composite oxides that contain the oxide compound more than a kind among Al, the Si at least.
(3) the described plane screen frame high-strength alloy strip in above-mentioned (1) or (2) contains Si:0.01%～0.05%.
(4) the described plane screen frame high-strength alloy strip in above-mentioned (1)～(3) contains Al:0.01%～0.03%.
As mentioned above, in Fe-Ni-Co class alloy or Fe-Ni class alloy, add an amount of Nb, can improve intensity significantly,, can improve the corrosion failure of plane screen frame with high-strength alloy by controlling this composition of inclusions.
Like this, finally can obtain Fe-Ni-Co class or Fe-Ni class high-strength alloy strip, this alloy bar can the time not produce to be processed under the situation that recovery rate reduces phenomenon and approaches the mask that pure planar flat tube is used in corrosion.
Embodiment
Substance of the present invention is to improve corrosion failure by making niobium oxide become composite oxides.Below, inclusion of the present invention is formed to relating to, the reason of determinant element describes.
Inclusion is formed: if inclusion is formed the niobium oxide monomer, the electron beam through hole easily produces crooked unfavorable condition during corrosion failure.This is because niobium oxide looks very big from being melted to before solidifying easily.Therefore, make inclusion become composite oxides, carry out the compound oxide compound if not a kind the oxide compound that contains at least among Al, the Si does not just have effect, so the regulation inclusion consists of niobium oxide and contains the composite oxides of the oxide compound more than a kind among Al, the Si at least.
Nb:Nb adds as the element that intensity is improved.If Nb is less than 0.05%, its effect is little, if Nb greater than 0.4 0%, then easily form niobium oxide, and thermal expansivity increases sharply.Therefore, containing the Nb amount is located in 0.05～0.40% scope.
O: if O is many, then the inclusion total amount increases, and it is very big that inclusion is also looked easily, so O is few more good more.But, under the monomeric situation of niobium oxide,, also not too effective to reducing big inclusion even reduce O.Therefore, the oxygen amount 0.0050% that will not increase protoxydic cost on industrialness is set at the upper limit.
Co, Ni:Co reduce thermal expansivity, also work to improving proof stress simultaneously.Ni is in order not produce harmful tissue such as martensite and to realize the necessary element of low-thermal-expansion.But, each have only scope in occasion that contains Co and the occasion that do not contain Co.If outside this scope, then thermal expansivity increases.Therefore, Co is 4.0%～6.0% o'clock, and Ni+Co is made as 36.0%～38.0%, or in the occasion of newly not adding Co, Ni is made as 35.0～37.0.
In addition, about Co,, contain Co inevitably though in technical scheme 2, do not set forth.For example, the material of amount such as 0.01%～0.02%Co shown in the No.6～No.8 in the table 1, the No.10 etc. is included in the claim scope of technical scheme 2.
The situation of adding as deoxidant element when Al:Al has situation about entering with the unavoidable impurities form from melt raw material and auxiliary material and adopts melting method.Al is less than 0.01%, can not make niobium oxide and aluminum oxide form composite oxides fully, and Al is greater than 0.03%, Al surplus then, and the monomeric inclusion cohesion of aluminum oxide can scratch cold roll, and finally this scar copies on the material surface.Therefore, Al is made as 0.01%～0.03%.
The situation of adding as deoxidant element when Si:Si has situation about entering with the unavoidable impurities form from melt raw material and auxiliary material and adopts melting method.Si is less than 0.01%, can not make niobium oxide and silicon-dioxide form composite oxides, and Si is greater than 0.05%, Si surplus then, and silica-based corrosion product hinders corrosion failure.Therefore, Si is made as 0.01%～0.05%.
Except that the above-mentioned element of mentioning, unavoidable impurities has C, S, P, N, Mn, Ti, Mg, Ca, Cr, Cu etc., enters with the unavoidable impurities form from melt raw material, auxiliary material and smelting furnace material.In the occasion of using as shadow mask, consider corrodibility and formability etc., preferably C is below 0.01%, and S is below 0.005%, P is below 0.005%, N is below 0.005%, and Mn is 0.01%～0.40%, and Ti is below 0.02%, Mg is below 0.005%, Ca is below 0.005%, and Cr is below 0.10%, and Cu is below 0.10%.In addition, in these unavoidable impurities, S in the grain boundary or the intragranular segregation, makes the hot workability variation with the form of S or S compound, and less than 0.10% occasion, S content is preferably below 0.0015% at Mn content.
Below, manufacture method is illustrated.The fusing of alloy of the present invention can be adopted the vacuum melting method, also can adopt secondary refining method.But must utilize the balance of niobium oxide and other oxide compound, it is compound that inclusion is carried out.In addition, because the avidity of Nb and oxygen is strong, measure so also must consider the Nb that consumes because of deoxidation.From these factors, melting raw materials and refining finish, and adjust to desirable alloying constituent and adjust to after the predetermined component scope of Si or Al, add niobium raw material, by 10 minutes to 1 hour leave standstill, make inclusion compound.In addition, be occasion below 0.0015% at S content, must use when carrying out vacuum melting to contain the extremely low raw material of S amount, so from the consideration of cost aspect, the most handy secondary refining method carries out desulfurization.
In addition, make the inclusion compound tense, be easy to generate the monomeric gathering of aluminum oxide, prevent to assemble so preferably handle to wait by Ca with Al.
Like this, cast after finally adjusting to alloying constituent, castmethod can adopt bottom pouring type, also can adopt the notes formula.In addition, also the ingot casting that obtains like this can be carried out remelting as electrode.
Resulting ingot casting forges the back and removes scale on surface, carries out hot rolling and cold rolling, carries out clean annealing and cold rolling then repeatedly, carries out finally cold rollingly at last, is cold-rolled to the specific thickness of 0.10～0.30mm scope.Then, as required, carry out shape aligning and stress relieving, carry out rip cutting again and to be cut into the plate of regulation wide, thereby obtain material for shadow mask.After the material for shadow mask degreasing, apply photoresist on the two sides, oven dry figure and after the video picture carries out corrosion failure processing, cuts off singly, becomes the material for shadow mask unit.
Anneal (for example at N in non-oxidizable atmosphere, for example reductibility atmosphere in the material for shadow mask unit
2-H
2In the mixed gas, under 750 ℃～950 ℃ temperature, annealed 15～30 minutes), give press formability.At last, after pure flat mask after the drawing carries out degreasing, at atmosphere or CO/CO
2Carry out melanism in the atmosphere and handle, form black oxide film in its surface.
The drawing type of indication of the present invention " pure flat mask " is that for example outer surface curvature radius R:100000mm is above, planeness: the maximum height of picture curved face part/active area Diagonal Dimension be below 0.1%, have a mask that almost approaches pure flat form.
[embodiment]
The composition of the alloy that table 1 expression embodiment and comparative example are used.[table 1] (%)
| ??No | ????Co | ?????Ni | ????Nb | ??????O | ?????Al | ?????Si | ???Co+Ni |
| ????1 | ????4.9 | ????32.5 | ????0.08 | ????0.0042 | ????0.005 | ????0.008 | ????37.4 |
| ????2 | ????5.4 | ????32.0 | ????0.15 | ????0.0038 | ????0.008 | ????0.008 | ????37.4 |
| ????3 | ????4.1 | ????33.5 | ????0.31 | ????0.0026 | ????0.015 | ????0.022 | ????37.6 |
| ????4 | ????5.7 | ????31.0 | ????0.29 | ????0.0019 | ????0.024 | ????0.007 | ????36.7 |
| ????5 | ????4.8 | ????32.2 | ????0.31 | ????0.0032 | ????0.005 | ????0.015 | ????37.0 |
| ????6 | ????0.01 | ????35.8 | ????0.33 | ????0.0028 | ????0.002 | ????0.045 | ????- |
| ????7 | ????0.02 | ????36.0 | ????0.38 | ????0.0019 | ????0.034 | ????0.025 | ????- |
| ????8 | ????0.02 | ????35.6 | ????0.12 | ????0.0042 | ????0.009 | ????0.007 | ????- |
| ????9 | ????4.6 | ????32.4 | ????0.20 | ????0.0018 | ????0.042 | ????0.018 | ????37.0 |
| ????10 | ????0.01 | ????36.3 | ????0.31 | ????0.0027 | ????0.002 | ????0.058 | ????- |
| ????11 | ????4.8 | ????32.4 | ????0.32 | ????0.0048 | ????0.002 | ????0.008 | ????37.2 |
| ????12 | ????4.4 | ????33.0 | ????0.29 | ????0.0038 | ????0.003 | ????0.009 | ????37.4 |
| ????13 | ????0.01 | ????35.8 | ????0.31 | ????0.0042 | ????0.002 | ????0.007 | ????- |
| ????14 | ????0.02 | ????36.5 | ????0.38 | ????0.0032 | ????0.007 | ????0.008 | ????- |
| ????15 | ????4.5 | ????32.1 | ????0.46 | ????0.0045 | ????0.002 | ????0.025 | ????36.6 |
| ????16 | ????0.01 | ????36.4 | ????0.37 | ????0.0067 | ????0.012 | ????0.011 | ????- |
| ????17 | ????0.01 | ????36.2 | ????0.55 | ????0.0034 | ????0.012 | ????0.032 | ????- |
| ????18 | ????4.8 | ????32.5 | ????0.02 | ????0.0021 | ????0.019 | ????0.012 | ????37.3 |
| ????19 | ????0.01 | ????36.0 | ????0.02 | ????0.0038 | ????0.002 | ????0.007 | ????- |
The alloy of these compositions is at first used electric furnace smelting iron, nickel and cobalt, in order to CaO and CaF
2For the slag of main component carries out refining in the LF ladle, carry out vacuum decarburization and deoxidation again.Though carry out deoxidation, also can both combinations carry out deoxidation here, with Al or Si.When the composition beyond the Nb reaches specified amount, add niobium raw material, become the liquation of predetermined component, leave standstill after 30 minutes and cast with the method for making a bet.In occasion, before leaving standstill, add the nickel calcium alloy with the Al deoxidation.
Resulting ingot casting unavoidable impurities is: C is 0.003%～0.007%, S is 0.0005%～0.0025%, P is 0.001%～0.003%, and O is 0.002%～0.004%, and N is 0.002%～0.004%, Mn is 0.02%～0.3%, Ti is 0.002%～0.005%, and Mg is below 0.002%, and Ca is below 0.002%, Cr is 0.01%～0.02%, and Cu is 0.01%～0.02%.Then, forge,, roll into 3mm thickness, carry out pickling, obtain cold rolling preceding web with carrying out hot rolling behind the mechanical means removal iron scale.
Then, carry out cold rolling and clean annealing repeatedly, become the cold rolling material of the about 0.12mm of thickness, carry out carrying out rip cutting behind the shape aligning and to become the plate of regulation wide, just obtain material for shadow mask.
The corrosion failure of this material is investigated in order to following method.The thin plate of 300mm * 300mm is carried out alkaline degreasing, the back two sides of the washing of spraying applies negative resist, carry out after the prebake, the diameter of putting spacing and be 400 μ m, one side be the diameter of 100 μ m, opposing backside surface be 200 μ m point-like photomask and expose.In the occasion of using negative resist, the part of being exposed is dissolved when video picture thereafter, exposes material surface.In the occasion of using positive resist, use the photomask opposite to get final product with light-struck part.Video picture is carried out by 30 ℃ hot water spray in heat baking back, washes behind the perpendicular film, becomes the corrosion thin slice.
Then, the ferrous chloride aqueous solution with 70 ℃ 45 Baumes corrodes the formation communicating pores from the two sides under 0.3MPa pressure.After corrosion finishes, etchant resist is peeled off with alkali lye.
With 100 of resulting corrosion masks, the stereomicroscope inspection window shape with 10 times has unusual part under light and the reflected light seeing through, and has calculated fraction defective with the mask sheet number that has inclusion in this unusual part.
In addition, observe material section 50mm with EPMA
2, be that the composition of the inclusion more than the 10 μ m is analyzed to the length that exists.
The present invention is the material that plane screen frame is used, so also measured intensity and thermal expansivity.About intensity, strike out annealing before the shadow mask and be and in the reductibility atmosphere, anneal (825 ℃ * 15 minutes, hydrogen in), estimate with the intensity after softening.In fact, carry out tension test, measure 0.2% proof stress, and at room temperature measure Young's modulus with flexural resonance method according to " JIS R 1605 " standard.This method is performed such, in order to carry out flexural vibration freely, on the top and bottom of the test film of hanging up by drive-side and detector side mounting line, apply motivating force from vibrator, produce maximum amplitude by detector, and measure the node of vibration, determine the resonance vibration number one time, according to the quality and the size of resonance vibration number and test film, formula in accordance with regulations calculates kinetic Young's modulus.
Alloy No.1～No.10 of the present invention is as shown in table 2, and the corrosion fraction defective that causes because of the reason of inclusion is below 3%, has good corrosion failure.[table 2]
| ??No | Inclusion number more than the length 10 μ m is (individual/50mm 2) | The above composition of inclusions of length 10 μ m (element of measuring with EPMA) | Shielding fraction defective (%) | 0.2% proof stress (MPa) | Young's modulus (GPa) | Remarks |
| ????1 | ????11 | Nb, Al, O or Nb, Ti, Al, O | ????3 | ????305 | ????135 | Example of the present invention |
| ????2 | ????12 | ?Nb，Al，O | ????3 | ????318 | ????136 | |
| ????3 | ????9 | Nb, Al, O or Nb, Si, O | ????1 | ????322 | ????136 | |
| ????4 | ????6 | Nb, Al, O or Nb, Ti, Al, O | ????0 | ????331 | ????137 | |
| ????5 | ????5 | ?Nb，Al，Si，O | ????0 | ????327 | ????136 | |
| ????6 | ????7 | Nb, Si, O or Mn, Si, O | ????1 | ????298 | ????146 | |
| ????7 | ????4 | Nb, Al, Ti, O or Nb, Si, O | ????0 | ????295 | ????148 | |
| ????8 | ????15 | Nb, Al, O or Nb, Ti, Al, O | ????3 | ????291 | ????139 | |
| ????9 | ????18 | ?Nb，Al，Si，O | ????2 | ????318 | ????137 | |
| ????10 | ????12 | Nb, Si, O or Mn, Si, O | ????2 | ????296 | ????140 | |
| ????11 | ????18 | Nb, O or Nb, Ti, O | ????8 | ????325 | ????135 | Comparative example |
| ????12 | ????15 | ?Nb，O | ????5 | ????324 | ????136 | |
| ????13 | ????32 | ?Nb，O | ????13 | ????298 | ????145 | |
| ????14 | ????18 | Nb, O or Nb, Ti, O | ????7 | ????301 | ????145 | |
| ????15 | ????14 | Nb, O or Nb, Ti, O or Nb, Ti, Al, Si, | ????5 | ????335 | ????138 | |
| ????16 | ????22 | Nb, O or Nb, Al, O | ????9 | ????298 | ????143 | |
| ????17 | ????15 | Nb, O or Nb, Al, O | ????7 | ????320 | ????141 | |
| ????18 | ????5 | Al, Mn, O or Mn, O | ????0 | ????292 | ????128 | |
| ????19 | ????4 | Mn, O or Mn, Si, O | ????0 | ????250 | ????134 |
In addition, we can say, realize that fully 0.2% proof stress is that 290MPa is above, Young's modulus is more than the 135GPa, have without a doubt intensity with alloy as plane screen frame.Wherein, the fraction defective that satisfies the No.3～No.7 of technical scheme 3 or technical scheme 4 is below 1%, and is good especially.
And depart from the No.11～No.14 of the composition of inclusions of technical scheme 1 or technical scheme 2 defineds, because of the inclusion reason, the corrosion fraction defective is more than 5%.In addition, surpassing No.15, the No.17 of the Nb content range of technical scheme 1 or technical scheme 2 regulations, is the above niobium oxides of 10 μ m owing to there is length, so fraction defective surpasses 5%.And the No.16 that oxygen surpasses specified amount also reaches 9% because of the reason fraction defective of niobium oxide.Be lower than No.18, the No.19 of the Nb content range of technical scheme 1 or technical scheme 2 defineds, 0.2% proof stress is low, or Young's modulus is low, certainly as plane screen frame with being inappropriate.
Claims (4)
1. plane screen frame high-strength alloy strip that corrosion failure is good, it is characterized in that, according to mass percent (%) (following represent) with %, by Co:4.0%～6.0%, Ni+Co:36.0%～3 8.0%, all the other are in the Fe-Ni-Co class alloy of Fe and unavoidable impurities formation, also contain Nb 0.05%～0.40%, and, oxygen in the unavoidable impurities is below 0.0050%, and the length that is present in before the corrosion failure on the rolling parallel cutting surfaces is that the above inclusion composition of 10 μ m is niobium oxide and contains Al at least, the composite oxides of the oxide compound more than a kind among the Si.
2. plane screen frame high-strength alloy strip that corrosion failure is good, it is characterized in that, according to mass percent (%), in by Ni:35.0%～37.0%, Fe-Ni class alloy that all the other constitute for Fe and unavoidable impurities, also contain Nb:0.05%～0.40%, and, oxygen in the unavoidable impurities is below 0.0050%, and the length that is present in before the corrosion failure on the rolling parallel cutting surfaces is that the above inclusion composition of 10 μ m is niobium oxide and the composite oxides that contain the oxide compound more than a kind among Al, the Si at least.
3. according to claim 1 or the described plane screen frame high-strength alloy strip of claim 2, contain Si:0.01%～0.05%.
4. according to the described plane screen frame high-strength alloy strip of claim 1～claim 3, contain Al:0.01%～0.03%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP89055/2001 | 2001-03-27 | ||
| JP2001089055A JP3469882B2 (en) | 2001-03-27 | 2001-03-27 | High strength alloy strips for flat masks with excellent etching piercing properties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1393574A true CN1393574A (en) | 2003-01-29 |
| CN1152972C CN1152972C (en) | 2004-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021080798A Expired - Fee Related CN1152972C (en) | 2001-03-27 | 2002-03-27 | High-strength alloy strip for corroding plane screen frame with fine perforating permanent |
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| Country | Link |
|---|---|
| JP (1) | JP3469882B2 (en) |
| KR (1) | KR100486325B1 (en) |
| CN (1) | CN1152972C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3626445B2 (en) * | 2001-10-02 | 2005-03-09 | 日本冶金工業株式会社 | Fe-Ni alloy for low thermal expansion and high rigidity shadow mask excellent in surface property and etching processability and method for producing the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04120251A (en) * | 1990-09-11 | 1992-04-21 | Nippon Steel Corp | Shadow mask material and its production |
-
2001
- 2001-03-27 JP JP2001089055A patent/JP3469882B2/en not_active Expired - Fee Related
-
2002
- 2002-03-26 KR KR10-2002-0016434A patent/KR100486325B1/en not_active IP Right Cessation
- 2002-03-27 CN CNB021080798A patent/CN1152972C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3469882B2 (en) | 2003-11-25 |
| CN1152972C (en) | 2004-06-09 |
| KR20020076175A (en) | 2002-10-09 |
| KR100486325B1 (en) | 2005-04-29 |
| JP2002285291A (en) | 2002-10-03 |
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