CN110629127B - Method for manufacturing invar alloy foil - Google Patents
Method for manufacturing invar alloy foil Download PDFInfo
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- CN110629127B CN110629127B CN201911151714.1A CN201911151714A CN110629127B CN 110629127 B CN110629127 B CN 110629127B CN 201911151714 A CN201911151714 A CN 201911151714A CN 110629127 B CN110629127 B CN 110629127B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-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
- B21B1/46—Metal-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
- B21B1/463—Metal-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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous 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
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- 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
- C21D8/0236—Cold rolling
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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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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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- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
Abstract
A method for manufacturing an invar alloy foil belongs to the technical field of materials and comprises the following steps: (1) smelting molten steel, and preparing an invar alloy casting strip by using a double-roll thin strip continuous casting device; (2) water cooling at a cooling speed of 10-100 ℃/s; (3) carrying out acid washing and primary cold rolling; carrying out intermediate annealing on the primary cold-rolled sheet, pickling again, and then carrying out secondary cold rolling; (4) and finally annealing the secondary cold-rolled sheet, wherein the annealing temperature is 600-900 ℃, and the annealing time is 5-60 min. The method can effectively inhibit the segregation of harmful elements, reduce the oxidation of the invar alloy casting strip and obviously improve the yield; the cracking problem caused by poor thermoplasticity can be avoided, and the invar alloy foil has the advantages of low hardness, good toughness, good thermal stability and strong cubic texture.
Description
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 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 20-80 m/min to prepare an invar alloy casting strip;
2. cooling the invar alloy cast strip to room temperature by a cooling unit at a cooling speed of 10-100 ℃/s to obtain a normal-temperature cast strip;
3. 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 30.0-93.0%, so as to obtain a primary cold-rolled sheet; carrying out intermediate annealing on the primary cold-rolled sheet at the temperature of 600-900 ℃ for 5-60 min 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 85-98.7%, and preparing a secondary cold rolled sheet;
4. and finally annealing the secondary cold-rolled sheet at the annealing temperature of 600-900 ℃ for 5-60 min to prepare the invar alloy foil.
The invar alloy casting strip comprises, by mass, 35-37.5% of Ni, 0.001-0.5% 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 and inevitable impurities.
The width of the invar alloy casting strip is 100-2000 mm.
In the step 1, the contact arc length of the molten steel and the surface of the crystallizing roller is 100-250 mm, and the liquid level height of the molten pool during derivation is 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 mm.
The width of the invar alloy foil is 100-2000 mm.
The twin-roll 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 1-10 mm by taking liquid metal as a raw material; by utilizing the sub-rapid solidification characteristic of the technology and the rapid secondary cooling after casting, the segregation of harmful elements can be obviously inhibited, and the oxidation of a cast strip blank is greatly reduced; because the invar alloy cast strip blank has small thickness and good plasticity, the forging and hot rolling processes can be expected to be cancelled, the cracking problem caused by poor thermoplasticity is fundamentally avoided, and the production efficiency and the yield are obviously improved; 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, so that the problems of high hardness, poor toughness, poor thermal stability and the like of the electrodeposited invar alloy foil can be avoided; furthermore, by taking advantage of the texture control of the twin-roll strip casting, it is also expected to avoid the formation of a γ -fiber texture that is detrimental to magnetic properties.
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 diameter of the crystallization roll of the twin roll strip casting apparatus used in the examples and comparative examples of the present invention was 500 to 1000 mm.
The width of the invar alloy cast strip obtained in the embodiment of the invention and the width of the invar alloy cast strip obtained in the comparative example are 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 average grain size of the invar alloy foil in the embodiment of the invention is 5-20 μm.
The hardness of the invar alloy foil in the embodiment of the invention is 120-180 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 is avoided.
The texture of the invar alloy foil in the embodiment of the invention is strong cubic texture.
The width of the invar alloy casting belt and the invar alloy foil in the embodiment of the invention is 100-2000 mm.
In the embodiment of the invention and the comparative example, when continuous casting is carried out, the contact arc length of molten steel and the roller surface of the crystallizing roller is 100-250 mm, and the liquid level height of a 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 ℃.
In the embodiment of the invention, the thickness of the invar alloy casting strip 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 cast strip to room temperature by a cooling unit at a cooling speed of 10-100 ℃/s to obtain a normal-temperature cast strip;
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 (1)
1. The manufacturing method of the invar alloy foil is characterized by comprising the following steps of:
(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, wherein the contact arc length of the molten steel and the roller surfaces of the crystallizing rollers is 100-250 mm, the liquid level height of the molten pool when the molten pool is led out is 80-220 mm, and the molten steel in the molten pool is solidified along with the rotation of the crystallizing rollers and is led out at the speed of 20-80 m/min to prepare an invar alloy casting strip; the invar alloy casting belt comprises the chemical components of, by mass, 36-37.5% of Ni, 0.3-0.5% of C, 0.3-0.6% of Si, 0.4-0.8% of Mn, 1.5-2.5% of Ti, 0.5-1.0% of Al, 0.06-0.1% of Zr, less than or equal to 0.2% of rare earth elements, less than or equal to 0.01% of S, less than or equal to 0.02% of P, and the balance of Fe and inevitable impurities, and has a width of 100-2000 mm;
(2) cooling the invar alloy cast strip to room temperature by a cooling unit at a cooling speed of 10-100 ℃/s to obtain a normal-temperature cast strip;
(3) 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 30.0-93.0%, so as to obtain a primary cold-rolled sheet; carrying out intermediate annealing on the primary cold-rolled sheet at the temperature of 600-900 ℃ for 5-60 min to obtain an intermediate annealed sheet; the intermediate annealing is carried out under the condition of argon atmosphere; 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 85-98.7%, and preparing a secondary cold rolled sheet;
(4) carrying out final annealing on the secondary cold-rolled sheet, wherein the annealing temperature is 600-900 ℃, and the annealing time is 5-60 min, so as to prepare the invar alloy foil; the final annealing is carried out under the condition of argon atmosphere; the thickness of the invar alloy foil is 0.02-0.1 mm.
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| CN112024835B (en) * | 2020-07-27 | 2022-03-25 | 河北博远科技有限公司 | Production method of low-permeability cold-rolled stainless steel strip |
| CN112962033B (en) * | 2021-02-01 | 2021-11-19 | 山西太钢不锈钢股份有限公司 | High-strength invar alloy and processing method thereof |
| CN113210423B (en) * | 2021-04-21 | 2022-02-22 | 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 |
| CN115161444B (en) * | 2022-08-12 | 2024-01-19 | 山西太钢不锈钢精密带钢有限公司 | Low-expansion alloy 4J36 precise foil and superfine crystal solid solution heat treatment method and application thereof |
| CN115533050B (en) * | 2022-09-30 | 2024-03-29 | 华南理工大学 | Ultra-thin 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 |
| CN116987976B (en) * | 2023-09-25 | 2024-01-02 | 安泰科技股份有限公司 | Iron-nickel-based precise alloy material for FMM mask, alloy strip and smelting method |
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| JPS57126915A (en) * | 1981-01-28 | 1982-08-06 | Sumitomo Electric Ind Ltd | High-strength low-expansion alloy wire |
| JP2001152292A (en) * | 1999-11-25 | 2001-06-05 | Nippon Mining & Metals Co Ltd | Fe-Ni ALLOY FOR SEMI-TENSION MASK EXCELLENT IN MAGNETIC PROPERTY, SEMI-TENSION MASK USING THE SAME, AND COLOR CATHODE RAY TUBE |
| CN104962816B (en) * | 2015-07-15 | 2017-10-24 | 东北大学 | A kind of very thin directional silicon steel and its short route manufacture method |
| CN108570605B (en) * | 2018-05-24 | 2020-01-31 | 东北大学 | High-strength high-plasticity low-density steel plate based on twin-roll continuous casting and manufacturing method thereof |
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