CN110629127A - Method for manufacturing invar alloy foil - Google Patents

Method for manufacturing invar alloy foil Download PDF

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Publication number
CN110629127A
CN110629127A CN201911151714.1A CN201911151714A CN110629127A CN 110629127 A CN110629127 A CN 110629127A CN 201911151714 A CN201911151714 A CN 201911151714A CN 110629127 A CN110629127 A CN 110629127A
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invar alloy
strip
cold rolling
molten steel
invar
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CN110629127B (en
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宋红宇
刘海涛
王国栋
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Northeastern University China
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Northeastern University China
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236Cold rolling
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/004Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/08Ferrous alloys, e.g. steel alloys containing nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium

Abstract

A process for preparing the invar alloy foil includes such steps as smelting molten steel, conticasting to obtain the invar alloy casting band by dual-roller conticaster, (2) cooling by 10 ~ 100 deg.C/s, (3) pickling, cold rolling, intermediate annealing, pickling, and cold rolling again, (4) final annealing at 600 ~ 900 deg.C for 5 ~ 60 min.

Description

Method for manufacturing invar alloy foil
Technical Field
The invention belongs to the technical field of materials, and particularly relates to a method for manufacturing an invar alloy foil.
Background
The invar alloy is an Fe-Ni alloy containing about 36 percent (mass fraction) of Ni, has extremely low average linear expansion coefficient, and still has better matching of strength, plasticity and toughness at low temperature; therefore, the method is mainly used for manufacturing precise instruments, laser resonant cavities and special transmission cables, and is particularly a core material of a Liquefied Natural Gas (LNG) transport ship. The invar alloy foil has the characteristics of high magnetic saturation strength and small coercive force, has good corrosion resistance, can be used as a magnetic shielding material, and has been widely applied to the electronic and information industries.
The typical production process of invar mainly comprises the following steps: vacuum induction melting, ingot casting, peeling, heating, forging, coping, heating, hot rolling, solution treatment, acid washing, coping, coil splicing, cold rolling, continuous bright heat treatment, cold finish rolling and packaging; production practices show that the production efficiency and the yield are seriously reduced by peeling and grinding treatment, so that the comprehensive yield from steel ingots to cold-rolled strips is only about 50%, a large amount of resources and energy are wasted, and the foil is more unfavorable for preparation. In contrast, electrodeposition has been developed to prepare invar alloy foils; however, the grain size of the invar alloy foil obtained by adopting the electrodeposition method is in the nanometer level, so that the electrodeposited invar alloy foil has high hardness, poor toughness and poor thermal stability, and a gamma fiber texture (preferred orientation <111>// ND) which is unfavorable for the magnetic property can be formed in the product; on the other hand, the method needs to adopt electrolyte to prepare the foil, so that environmental pollution is easily caused, and product performance fluctuation can be caused when the electrolyte performance is unstable; therefore, the two existing production processes of the invar alloy foil do not accord with the green development direction of the metal material industry, and how to optimize the production process, improve the yield, reduce the cost and improve the product performance becomes the pursuit target of the metallurgy workers.
Disclosure of Invention
The invention aims to provide a method for manufacturing an invar alloy foil, which gives full play to the advantages and the potential of a thin-strip continuous casting technology in the regulation and control of the invar alloy structure and the texture, obtains an invar alloy foil product by adjusting a process flow, and has the characteristics of short process flow and high yield.
The method of the invention is carried out according to the following steps:
1. smelting molten steel by adopting an intermediate frequency vacuum induction furnace, pouring the smelted molten steel into a cavity formed by two crystallizing rollers and two side sealing plates through a tundish by utilizing a double-roller thin strip continuous casting device to form a molten pool, solidifying the molten steel in the molten pool along with the rotation of the crystallizing rollers and leading out the molten steel at the speed of 20 ~ 80m/min to prepare an invar alloy casting strip;
2. cooling the invar alloy casting belt to room temperature by a cooling unit at a cooling speed of 10 ~ 100 ℃/s to obtain a normal-temperature casting belt;
3. pickling a normal-temperature cast strip to remove surface iron scales, then carrying out primary cold rolling, wherein the reduction rate of the primary cold rolling is 30.0 ~ 93.0.0%, so as to obtain a primary cold-rolled sheet, carrying out intermediate annealing on the primary cold-rolled sheet, wherein the temperature is 600 ~ 900 ℃, and the time is 5 ~ 60min, so as to obtain an intermediate annealed sheet, pickling the intermediate annealed sheet to remove the surface iron scales, then carrying out secondary cold rolling, wherein the reduction rate of the secondary cold rolling is 85 ~ 98.7.7%, so as to prepare a secondary cold-rolled sheet;
4. and (3) carrying out final annealing on the secondary cold-rolled sheet at the annealing temperature of 600 ~ 900 ℃ for 5 ~ 60min to prepare the invar alloy foil.
The chemical components of the invar alloy casting strip comprise, by mass, 35. 35 ~ 37.5.5% of Ni, 0.001 ~ 0.5.5% of C, less than or equal to 0.6% of Si, less than or equal to 0.9% of Mn, less than or equal to 2.5% of Ti, less than or equal to 1.2% of Al, less than or equal to 0.1% of Zr, less than or equal to 0.2% of rare earth elements, less than or equal to 0.02% of S, less than or equal to 0.02% of P, and the balance of Fe.
The width of the invar cast strip was 100 ~ 2000 mm.
In the above step 1, the arc length of contact between the molten steel and the surface of the crystallization roll was 100 ~ 250mm, and the height of the liquid surface of the molten pool at the time of tapping was 80 ~ 220 mm.
In the above steps 3 and 4, the intermediate annealing and the final annealing are performed under an argon atmosphere.
The thickness of the invar alloy foil is 0.02 ~ 0.1.1 mm.
The width of the invar foil described above is 100 ~ 2000 mm.
The double-roller thin-strip continuous casting is a leading-edge technology which integrates sub-rapid solidification and rolling deformation and directly produces a strip with the thickness of 1 ~ 10mm by using liquid metal as a raw material, can obviously inhibit the segregation of harmful elements and greatly reduce the oxidation of a cast strip billet by utilizing the sub-rapid solidification characteristic of the technology and the rapid secondary cooling after casting, can hopefully eliminate the forging and hot rolling processes because the thickness of the invar alloy cast strip billet is smaller and the plasticity is good, fundamentally avoids the cracking problem caused by poor thermoplasticity, obviously improves the production efficiency and the yield, on the other hand, the grain size of the invar alloy foil prepared by the double-roller thin-strip continuous casting process is in the micron level, can avoid the problems of high hardness, poor toughness, poor thermal stability and the like of the electrodeposited invar alloy foil, and can also hopefully avoid the formation of a gamma fiber texture which is unfavorable for the magnetic performance by exerting the advantages of the double-roller thin-strip continuous casting on the texture control.
Compared with the prior art, the invention has the characteristics and beneficial effects that:
(1) by utilizing the sub-rapid solidification characteristic of twin-roll thin strip continuous casting and the rapid secondary cooling after casting, the segregation of harmful elements can be effectively inhibited, the oxidation of a cast strip is reduced, and the yield is obviously improved; moreover, forging and hot rolling procedures in the traditional flow can be eliminated, the cracking problem caused by poor thermoplasticity is fundamentally avoided, and the cracking phenomenon does not occur under the condition that the width of the cast strip is 2000 mm; the preparation process can be greatly simplified, and the production efficiency is improved;
(2) compared with the electro-deposition preparation flow, the invar alloy foil prepared by adopting the twin-roll thin strip continuous casting has the remarkable advantages of low hardness, good toughness, good thermal stability and strong cubic texture ({ 001} <100> preferred orientation), and can greatly reduce the emission of pollutants.
Drawings
FIG. 1 is a schematic process flow diagram of a method for manufacturing an invar alloy foil according to the present invention;
FIG. 2 shows the texture of the invar foil in example 1 of the present invention;
FIG. 3 is a final annealed sheet texture of a comparative test in example 1 of the present invention;
FIG. 4 shows the texture of the invar foil in example 2 of the present invention;
FIG. 5 is the final annealed sheet texture of a comparative test in example 2 of the present invention.
Detailed Description
The twin roll strip casting apparatus used in the examples of the present invention and the comparative examples had a diameter of the crystallization roll of 500 ~ 1000 mm.
The width of the invar alloy cast strip obtained in the inventive example and the comparative example was 100 ~ 2000 mm.
Texture testing of the annealed sheets in the examples and comparative examples of the present invention was performed on a Bruker D8 Discover type X-ray diffractometer by measuring three incomplete pole figures of {111}, {200}, and {220} of the sample and calculating the Orientation Distribution Function (ODF) by using the series expansion method; the dimension of the sample measured was 22mm (rolling direction) × 20mm (width direction perpendicular to rolling direction).
In the embodiment and the comparative example of the invention, the annealing atmosphere is argon atmosphere, and the purity of the adopted argon is more than 99.99 percent.
The invar alloy foil in the present example had an average grain size of 5 ~ 20 μm.
The hardness of the invar foil in the embodiment of the invention is 120 ~ 180HV and 180 HV.
The invar alloy foil in the embodiment of the invention has good thermal stability, and after annealing at 600 ~ 900 ℃, the average grain size difference is within 15 mu m, so that the phenomenon of obvious grain growth of the electrodeposited invar alloy foil can not occur.
The texture of the invar alloy foil in the embodiment of the invention is strong cubic texture.
The width of the invar cast strip and the invar foil in the examples of the present invention was 100 ~ 2000 mm.
When continuous casting is carried out in the examples of the present invention and in the comparative examples, the contact arc length of molten steel with the roll surface of the crystallization roll is 100 ~ 250mm, and the liquid level height of the molten pool is 80 ~ 220 mm.
In the embodiment of the invention, when continuous casting is carried out, the superheat degree of the upper surface of a molten pool is controlled to be 15 ~ 70 ℃.
The thickness of the invar alloy cast strip in the embodiment of the invention is 2.5 ~ 5 mm.
Example 1
The flow is shown in figure 1;
smelting molten steel by adopting a medium-frequency vacuum induction furnace, pouring the smelted molten steel into a cavity formed by two crystallizing rollers and two side sealing plates through a tundish by utilizing a double-roller thin-strip continuous casting device to form a molten pool, solidifying the molten steel in the molten pool along with the rotation of the crystallizing rollers and leading out the molten steel at the speed of 20m/min to prepare an invar alloy casting strip, wherein the invar alloy casting strip comprises the following components, by mass, 35% of Ni, 0.005% of C, 0.1% of Si, 0.2% of Mn, 0.01% of S, 0.01% of P and the balance of Fe and inevitable impurities; the thickness of the invar alloy casting strip is 3 mm;
cooling the invar alloy casting belt to room temperature by a cooling unit at a cooling speed of 10 ~ 100 ℃/s to obtain a normal-temperature casting belt;
pickling the normal-temperature cast strip to remove surface iron oxide scales, and then carrying out primary cold rolling, wherein the reduction rate of the primary cold rolling is 88.3%, so as to obtain a primary cold-rolled sheet; under the condition of argon atmosphere, carrying out intermediate annealing on the primary cold-rolled sheet at the temperature of 900 ℃ for 10min to obtain an intermediate annealed sheet; pickling the intermediate annealed sheet to remove surface iron oxide scales, then carrying out secondary cold rolling, wherein the reduction rate of the secondary cold rolling is 98.3%, and preparing a secondary cold-rolled sheet;
under the condition of argon atmosphere, carrying out final annealing on the secondary cold-rolled sheet at the annealing temperature of 700 ℃ for 30min to prepare an invar alloy foil with the thickness of 0.05mm and a strong cubic texture ({ 001} <100> preferred orientation), as shown in FIG. 2;
adjusting the components of the molten steel, and carrying out a comparative test according to the steps, wherein the components of the cast ingot comprise 32.0 percent of Ni, 0.6 percent of C, 0.3 percent of Si and 0.5 percent of Mn in percentage by mass; the final annealed sheet texture achieved was diffuse as shown in fig. 3.
Example 2
The method is the same as example 1, except that:
(1) the invar alloy casting strip comprises, by mass, 37.5% of Ni, 0.5% of C, 0.6% of Si, 0.8% of Mn, 2.5% of Ti, 1.0% of Al, 0.01% of S, 0.01% of P, 0.1% of Zr and 0.2% of rare earth elements; the thickness of the invar alloy casting strip is 2.5 mm; the leading-out speed is 60m/min during continuous casting;
(2) the reduction rate of the primary cold rolling is 75 percent; the intermediate annealing temperature is 800 ℃, and the time is 20 min; the secondary cold rolling reduction rate is 96.8 percent,
(3) the final annealing temperature is 900 ℃, the time is 20min, the thickness of the invar alloy foil is 0.02mm, and the texture is strong cubic texture ({ 001} <100> preferred orientation), as shown in FIG. 4;
the process steps are adjusted to carry out a comparative test according to the method, the steel plate is directly cold-rolled to 0.02mm after acid cleaning, namely the cold rolling reduction rate is 99.2%, intermediate annealing is cancelled, and the texture of the obtained final annealed plate is diffused, as shown in figure 5.
Example 3
The method is the same as example 1, except that:
(1) the invar alloy casting strip comprises, by mass, 36% of Ni, 0.3% of C, 0.3% of Si, 0.4% of Mn, 1.5% of Ti, 0.5% of Al, 0.02% of S, 0.01% of P and 0.06% of Zr; the thickness of the invar alloy casting strip is 5 mm; the leading-out speed is 30m/min during continuous casting;
(2) the reduction rate of the primary cold rolling is 80 percent; the intermediate annealing temperature is 700 ℃, and the time is 30 min; the secondary cold rolling reduction rate is 90 percent,
(3) the final annealing temperature is 800 ℃, the time is 10min, the thickness of the invar alloy foil is 0.1mm, and the texture is strong cubic texture ({ 001} <100> preferred orientation);
adjusting the components of the molten steel, and carrying out a comparative test according to the steps, wherein the components of the cast ingot comprise 32.0 percent of Ni, 0.1 percent of C, 0.3 percent of Si and 0.9 percent of Mn in percentage by mass; the final annealed sheet texture achieved is diffuse.
Example 4
The manufacturing method is different from that of example 1 in that: the first cold rolling reduction rate is 50%, the intermediate annealing temperature is 800 ℃, the time is 20min, and the second cold rolling reduction rate is 98.7%; the texture of the obtained invar alloy foil is strong cubic texture.
Example 5
The manufacturing method is different from that of example 2 in that: the final annealing temperature is 700 ℃, and the annealing time is 10 min; the texture of the obtained invar alloy foil is strong cubic texture.
Example 6
The manufacturing method is different from that of example 3 in that: the thickness of the invar alloy cast strip is 1.5mm, the primary cold rolling reduction rate is 35%, the intermediate annealing temperature is 900 ℃, the time is 30min, the secondary cold rolling reduction rate is 89.7%, the final annealing temperature is 700 ℃, and the time is 30 min; the texture of the obtained invar alloy foil is strong cubic texture.
Example 7
The manufacturing method is different from that of example 1 in that: the invar alloy casting strip comprises 36 percent of Ni, 0.001 percent of C, 0.01 percent of Si, 0.01 percent of S, 0.02 percent of P and 2.5mm of the thickness of the invar alloy casting strip according to mass percentage; the leading-out speed is 30m/min during continuous casting; the primary cold rolling reduction rate is 30 percent, the intermediate annealing temperature is 600 ℃, the time is 60min, and the secondary cold rolling reduction rate is 98 percent; the final annealing temperature is 600 ℃, and the time is 60 min; the thickness of the invar alloy foil is 0.035 mm; the texture of the obtained invar alloy foil is strong cubic texture.
Example 8
The manufacturing method is different from that of example 1 in that: the invar alloy casting strip comprises 36 percent of Ni, 0.03 percent of C, 0.9 percent of Mn, 1.2 percent of Al, 0.01 percent of S, 0.01 percent of P and 5mm of the thickness of the invar alloy casting strip in percentage by mass; the leading-out speed is 80m/min during continuous casting; the first cold rolling reduction rate is 93 percent, the intermediate annealing temperature is 900 ℃, the time is 5min, and the second cold rolling reduction rate is 85 percent; the final annealing temperature is 900 ℃, and the time is 5 min; the thickness of the invar alloy foil is 0.053 mm; the texture of the obtained invar alloy foil is strong cubic texture.

Claims (6)

1. The manufacturing method of the invar alloy foil is characterized by comprising the following steps of:
(1) smelting molten steel by adopting an intermediate frequency vacuum induction furnace, pouring the smelted molten steel into a cavity formed by two crystallizing rollers and two side sealing plates through a tundish by utilizing a double-roller thin strip continuous casting device to form a molten pool, solidifying the molten steel in the molten pool along with the rotation of the crystallizing rollers and leading out the molten steel at the speed of 20 ~ 80m/min to prepare an invar alloy casting strip;
(2) cooling the invar alloy casting belt to room temperature by a cooling unit at a cooling speed of 10 ~ 100 ℃/s to obtain a normal-temperature casting belt;
(3) pickling a normal-temperature cast strip to remove surface iron scales, then carrying out primary cold rolling, wherein the reduction rate of the primary cold rolling is 30.0 ~ 93.0.0%, so as to obtain a primary cold-rolled sheet, carrying out intermediate annealing on the primary cold-rolled sheet, wherein the temperature is 600 ~ 900 ℃, and the time is 5 ~ 60min, so as to obtain an intermediate annealed sheet, pickling the intermediate annealed sheet to remove the surface iron scales, then carrying out secondary cold rolling, wherein the reduction rate of the secondary cold rolling is 85 ~ 98.7.7%, so as to prepare a secondary cold-rolled sheet;
(4) and (3) carrying out final annealing on the secondary cold-rolled sheet at the annealing temperature of 600 ~ 900 ℃ for 5 ~ 60min to prepare the invar alloy foil.
2. The method of claim 1, wherein the invar alloy strip comprises Ni 35 ~ 37.5.5 wt%, C0.001 ~ 0.5.5 wt%, Si 0.6 wt%, Mn 0.9 wt%, Ti 2.5 wt%, Al 1.2 wt%, Zr 0.1 wt%, RE 0.2 wt%, S0.02 wt%, P0.02 wt%, and Fe and inevitable impurities.
3. The method of claim 1, wherein the width of the invar alloy strip is 100 ~ 2000 mm.
4. The method of claim 1, wherein in the step (1), the length of the arc of contact between the molten steel and the surface of the rolls of the crystallizing rolls is 100 ~ 250mm, and the height of the molten bath surface at the time of tapping is 80 ~ 220 mm.
5. The method for manufacturing an invar alloy foil according to claim 1, wherein the intermediate annealing and the final annealing in steps (3) and (4) are performed under an argon atmosphere.
6. The method of claim 1, wherein the invar foil has a thickness of 0.02 ~ 0.1.1 mm.
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CN112024835A (en) * 2020-07-27 2020-12-04 河北博远科技有限公司 Production method of low-permeability cold-rolled stainless steel strip
CN112962033A (en) * 2021-02-01 2021-06-15 山西太钢不锈钢股份有限公司 High-strength invar alloy and processing method thereof
CN113210423A (en) * 2021-04-21 2021-08-06 鞍钢联众(广州)不锈钢有限公司 Manufacturing method of invar alloy hot-rolled steel coil
CN114433847A (en) * 2022-02-11 2022-05-06 寰采星科技(宁波)有限公司 Preparation method of high-cleanness metal foil and preparation method of metal mask strip
CN115161444A (en) * 2022-08-12 2022-10-11 山西太钢不锈钢精密带钢有限公司 Low-expansion alloy 4J36 precision foil and superfine crystal solid solution heat treatment method and application thereof
CN115305331A (en) * 2022-08-18 2022-11-08 山西太钢不锈钢精密带钢有限公司 Low-expansion alloy 4J36 stress-relief annealing process for half-etching
CN115533050A (en) * 2022-09-30 2022-12-30 华南理工大学 Ultrathin invar strip prepared by melt-spinning method and method thereof
CN115679219A (en) * 2022-11-14 2023-02-03 寰采星科技(宁波)有限公司 Iron-nickel alloy foil for precise metal mask plate and preparation method thereof
CN116987976A (en) * 2023-09-25 2023-11-03 安泰科技股份有限公司 Iron-nickel-based precise alloy material for FMM mask, alloy strip and smelting method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126915A (en) * 1981-01-28 1982-08-06 Sumitomo Electric Ind Ltd High-strength low-expansion alloy wire
WO2001038594A1 (en) * 1999-11-25 2001-05-31 Nippon Mining & Metals Co., Ltd. Fe-Ni BASED ALLOY FOR SEMI-TENSION MASK EXCELLENT IN MAGNETIC CHARACTERISTICS, AND SEMI-TENSION MASK AND COLOR CATHODE-RAY TUBE USING THE SAME
CN104962816A (en) * 2015-07-15 2015-10-07 东北大学 Ultrathin oriented silicon steel sheet and short-process manufacturing method thereof
CN108570605A (en) * 2018-05-24 2018-09-25 东北大学 High-strength high-plasticity low-density steel plate based on double roller continuous casting and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126915A (en) * 1981-01-28 1982-08-06 Sumitomo Electric Ind Ltd High-strength low-expansion alloy wire
WO2001038594A1 (en) * 1999-11-25 2001-05-31 Nippon Mining & Metals Co., Ltd. Fe-Ni BASED ALLOY FOR SEMI-TENSION MASK EXCELLENT IN MAGNETIC CHARACTERISTICS, AND SEMI-TENSION MASK AND COLOR CATHODE-RAY TUBE USING THE SAME
CN104962816A (en) * 2015-07-15 2015-10-07 东北大学 Ultrathin oriented silicon steel sheet and short-process manufacturing method thereof
CN108570605A (en) * 2018-05-24 2018-09-25 东北大学 High-strength high-plasticity low-density steel plate based on double roller continuous casting and its manufacturing method

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