CN114574783B - Amorphous nanocrystalline alloy strip and preparation method thereof - Google Patents

Amorphous nanocrystalline alloy strip and preparation method thereof Download PDF

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Publication number
CN114574783B
CN114574783B CN202011299457.9A CN202011299457A CN114574783B CN 114574783 B CN114574783 B CN 114574783B CN 202011299457 A CN202011299457 A CN 202011299457A CN 114574783 B CN114574783 B CN 114574783B
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strip
temperature
outer circumferential
circumferential surface
amorphous nanocrystalline
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CN114574783A (en
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陈文智
史扬
李百松
刘国栋
李志刚
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Antai Amorphous Technology Co ltd
Advanced Technology and Materials Co Ltd
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Antai Amorphous Technology Co ltd
Advanced Technology and Materials Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/008—Amorphous alloys with Fe, Co or Ni as the major constituent
    • 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
    • B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/11—Making amorphous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/003—Making ferrous alloys making amorphous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15341—Preparation processes therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15391—Elongated structures, e.g. wires
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention relates to an amorphous nanocrystalline alloy strip and a preparation method thereof. The amorphous nanocrystalline alloy strip is manufactured by adopting a planar flow technology, the fluctuation range of the temperature of alloy liquid in a nozzle bag is not more than 20 ℃, the fluctuation range of the temperature of the outer circumferential surface of a cooling roller before entering a puddle is not more than 50 ℃, and the fluctuation range of the stripping temperature of the strip when stripping the outer circumferential surface of the cooling roller is not more than 50 ℃. The method is used for preparing the material, and the difference of crystallization temperatures of the material is not more than 2 ℃ at different positions in the length and width directions of the material in the same furnace; the difference in crystallization temperature of the strip material between different heats is not more than 5 ℃. The amorphous nanocrystalline alloy strip prepared by the method has excellent crystallization temperature consistency, improves the subsequent heat treatment efficiency, and ensures the consistency of the magnetic properties of the strip or the iron core after heat treatment.

Description

Amorphous nanocrystalline alloy strip and preparation method thereof
Technical Field
The invention relates to the field of soft magnetic material research in the field of magnetic functional materials, in particular to an amorphous nanocrystalline alloy strip with good crystallization temperature consistency and a preparation method thereof.
Background
The amorphous nanocrystalline alloy is a kind of soft magnetic material which is rapidly developed in recent years, has higher magnetic permeability and lower alternating current loss compared with the traditional soft magnetic materials such as electrical steel, ferrite and the like, and has been widely applied to iron cores in magnetic components such as transformers, inductors, mutual inductors, motor stators and the like. When used in transformers, inductors, transformers, motor stators, etc., amorphous nanocrystalline alloy strips having a thickness of only about 0.025 mm are typically wound or stacked into cores. For a strip having a width of 50mm or more, it is often first cut into strips, and then core wound or the like.
The amorphous nanocrystalline strip is generally prepared by adopting a plane flow technology, and the method comprises the following steps: melting raw materials in a certain proportion into alloy liquid by a smelting furnace; then, pouring the alloy liquid into a nozzle bag with a slit nozzle at the bottom; alloy liquid in the nozzle bag flows out of the nozzle, spreads on the outer circumferential surface of the copper alloy cooling roller rotating at high speed below the nozzle, forms a molten alloy pool with a certain size between the outer circumferential surface of the cooling roller and the bottom surface of the nozzle, rapidly extracts and rapidly cools the alloy liquid, and simultaneously continuously supplements the alloy liquid in the nozzle seam into the pool, thereby forming a continuous thin strip with an amorphous or nanocrystalline structure. The thin strip is closely attached to the outer circumferential surface of the cooling roller, rotates at a high speed with the cooling roller, is peeled off at a proper position on the outer circumferential surface of the cooling roller by a high-pressure gas or a mechanical device, and is finally wound into a roll by a winding device.
In actual production, amorphous nanocrystalline ribbons are always manufactured in furnace times. In the process of producing an amorphous nanocrystalline strip, the size, quality, etc. of the outer circumferential surface of the cooling roll, the nozzle slit through which the alloy liquid passes, or other relevant portions generally gradually change with the production of the strip, resulting in gradual deterioration of the quality of the produced strip. When the quality of the strip deteriorates to some extent, the production of the strip must be stopped, the replacement or repair of the device or component parts that are no longer suitable for use must be performed, and then the strip production is restarted. The most notable feature of a certain strip manufacturing process, called a heat from start to end, is that the alloy liquid flowing out of the nozzle is not interrupted.
Subsequently, the amorphous nanocrystalline strip is wound or stacked into cores of various shapes, or cut into a desired shape, and then heat-treated. The heat treatment aims to eliminate internal stress generated by rapid solidification and iron core winding inside the strip and improve magnetic performance. Sometimes, an external magnetic field is applied to the core during the heat treatment to create a specific magnetic anisotropy, resulting in certain specific properties.
The choice of the heat treatment regime (especially the heat treatment temperature) of the amorphous nanocrystalline core is critical in order to obtain optimal magnetic properties. For example, as an iron-based amorphous alloy for a distribution transformer core, an optimum heat treatment temperature is about 150 ℃ or less below the crystallization temperature; as another example, for an iron-based nanocrystalline alloy, its optimal heat treatment temperature is between its first and second crystallization temperatures.
However, in the actual production of amorphous nanocrystalline strips, there is always some fluctuation in the crystallization temperature of the strip product, either at different locations within the same heat or between different heats. If the fluctuation of the crystallization temperature exceeds a certain limit, the optimal heat treatment temperature range is affected, and the following heat treatment is inconvenient: if the strip materials or the iron cores with larger difference in crystallization temperature are subjected to mixed furnace heat treatment, partial strip materials or iron cores deviate from the optimal heat treatment temperature range, so that larger inconsistency exists in magnetic performance among the strip materials or the iron cores. If the strip or core is exclusively heat treated with a crystallization temperature close to that of the strip or core, the production efficiency is significantly reduced.
Therefore, the crystallization temperature fluctuation of the amorphous nanocrystalline strip in the same furnace and among different furnaces is reduced, and the improvement of the consistency of the magnetic properties of the iron core after the subsequent heat treatment is important.
Disclosure of Invention
The invention aims to provide an amorphous nanocrystalline alloy strip with excellent crystallization temperature consistency and a preparation method thereof, so that subsequent heat treatment can be efficiently performed, and the consistency of magnetic properties of the strip or an iron core after the heat treatment is ensured.
The crystallization temperature is an important physical quantity of amorphous nanocrystalline strip that has a significant impact on the choice of strip heat treatment temperature. Therefore, the crystallization temperature fluctuation of the strip must be controlled so that the crystallization temperature deviation of the strip between the same heat and different heat is controlled within a certain range. The crystallization temperature of the amorphous nanocrystalline strip is mainly determined by two factors:
in the first aspect, the chemical composition of the amorphous nanocrystalline alloy material is a primary factor affecting its crystallization temperature. The deviation of the actual content of each main element from their target values is particularly critical, because the element content determines the position of the alloy on the phase diagram from the eutectic point, and further determines the amorphous forming ability and stability of the amorphous alloy. When the content of the main element is changed, the crystallization temperature is changed, so that the consistency of the crystallization temperature among different heats is affected. The main element is a chemical element that is intentionally added to impart or achieve a certain property to the alloy.
In order to ensure the consistency of the crystallization temperature of the amorphous alloy, the absolute value of the relative deviation of the actual content of each main element from its target value (the ratio of the absolute deviation of the content of each main element to its target value) must be not more than 2%. Preferably, the absolute value of the relative deviation of the actual content of each main element from its target value is not more than 1%.
In the second aspect, the difference of cooling effect of the amorphous nanocrystalline strip in the preparation process also has a certain influence on the crystallization temperature. Due to the fluctuation of the preparation process parameters, the cooling effect of the strip material in the same furnace and among different furnaces is inevitably inconsistent, so that the microstructure of the prepared amorphous nanocrystalline strip material is different, and the crystallization temperature of the strip material is caused to fluctuate. In order to ensure consistency of crystallization temperature, consistency of key process parameters in the process of manufacturing the strip, including alloy liquid temperature, roll surface temperature, strip stripping temperature and the like, must be ensured.
The components of the amorphous nanocrystalline alloy strip of the invention have the following general expression:
X a Y b Z c
wherein X is at least one of ferromagnetic transition metal elements Fe, co and Ni, and the total content a is 65-85at%; y is at least one of transition metal element Ti, zr, hf, V, nb, ta, cr, mo, W, mn, cu, ag, au, zn, al and Sn, and the total content b is 0-10at%; z is at least one of amorphous forming elements (also called metalloid elements) Si, B, P, C and the like, and the total content c is 15 to 30 at%. In addition, the alloy may contain an impurity element in a total amount of not more than 0.5 at%.
Before the belt is manufactured, measuring the actual content of each main element in the alloy liquid by using a direct-reading spectrometer, and enabling the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element between different heat ranges to be not more than 2 percent. Preferably, the absolute value of the relative deviation of the actual content of each main element from its target value between different heats is not more than 1%.
The amorphous nanocrystalline alloy strip is prepared by adopting a plane flow rapid solidification process, and the adopted raw materials are all industrial pure simple substances or alloys, and the specific preparation method is as follows:
firstly, smelting raw materials with a certain proportion into alloy liquid by a smelting furnace, and pouring the smelted alloy liquid into a tundish for temperature adjustment and production rhythm buffering. The tundish can be omitted when preparing the strip in small scale or laboratory; then, the alloy liquid was poured into a nozzle ladle having a slit nozzle at the bottom. Alloy liquid in the nozzle bag flows out from the nozzle, spreads on the outer circumferential surface of the copper alloy cooling roller rotating at high speed below the nozzle, and is rapidly cooled to form a continuous thin strip with an amorphous or nanocrystalline structure.
The fluctuation range of the alloy liquid temperature in the nozzle package is not more than 20 ℃ in different time periods in the same heat and between different heat; preferably, the temperature fluctuation range is not more than 10 ℃; more preferably, the temperature fluctuation range is not more than 5 ℃. The static pressure of alloy liquid at the nozzle is between 20 and 50 kPa; preferably, the static pressure of the alloy liquid is between 25 and 40 kPa.
The nozzle bag bottom is provided with a slit nozzle with the width of 0.2-0.5 mm.
A cooling roller with a copper alloy outer circumferential surface rotating at a high speed is arranged below the nozzle, and the surface linear speed is 15-30 m/s. The interior of the chill roll may be cooled with a flowing liquid, such as water.
The temperature fluctuation range of the outer circumferential surface of the cooling roll before entering the puddle is not more than 50 ℃ in different time periods in the same heat and between different heat. Preferably, the temperature fluctuation range of the outer circumferential surface of the cooling roll before entering the puddle is not more than 30 ℃. The outer circumferential surface temperature of the cooling roll means a temperature of the cooling roll at a quarter circumference of a surface of a belt forming position before entering the puddle during rotation thereof (for example, when a belt is formed by an upper casting method, a nozzle and the puddle are both provided at the topmost end of the cooling roll, a measuring point of the outer circumferential surface temperature of the cooling roll is located at a position corresponding to the middle of the width of the strip on the outer circumferential surface of the cooling roll at a central angle of 90 ° in the opposite direction of the strip ejected from the cooling roll, and is measured by a non-contact method such as an infrared thermometer or a thermal imager). The temperature of the outer circumferential surface thereof can be adjusted by adjusting the flow rate or temperature of the cooling water inside the cooling roll.
The distance between the bottom edge of the nozzle and the outer circumferential surface of the cooling roll (roll mouth spacing) is between 0.1 and 0.7 mm.
The outer circumferential surface of the cooling roll is previously processed so that its surface roughness Ra is between 0.20 and 0.40 mu m.
Ar, N are used for the space between the nozzle and the outer circumferential surface of the cooling roller 2 CO or CO 2 At least one of the above or a mixed gas thereof is subjected to atmosphere protection to prevent oxidation of the alloy liquid, reduce air entrainment, adjust the temperature of the alloy liquid in the puddle, and the like.
The outer circumferential surface of the cooling roll is continuously polished with a sandpaper (cloth) wheel, a metal brush wheel or a resin brush wheel containing abrasive grains to remove the residue accumulated on the surface and to maintain the surface roughness Ra thereof always between 0.20 and 0.40 μm.
The temperature (stripping temperature) fluctuation range of the strip material at the time of stripping the surface of the cooling roll is not more than 50 ℃ within the same heat for different time periods and between the heat. Preferably, the strip has a peel temperature fluctuation range of no more than 30 ℃. Strip peel temperature refers to the temperature of the strip just off the roll surface, with the measurement point being exactly midway between the widths of the strip's free surfaces. The adjustment of the peeling temperature can be achieved by changing the position of the peeling point of the strip material, changing the temperature of the outer circumferential surface of the cooling roll, and the like.
The width of the amorphous nanocrystalline alloy strip prepared by the method is 50-300 mm, and the thickness is 10-50 mu m.
The strip is synchronously wound into rolls with an automatic winding device.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min.
The amorphous nanocrystalline strip prepared by the method has the following properties:
the difference of the crystallization temperatures of the strips at different positions in the length and width directions of the strips in the same furnace is not more than 2 ℃; preferably, the difference is not greater than 1 ℃. The difference of the crystallization temperatures of the strips is not more than 5 ℃ among different heats; preferably, the difference is not greater than 2 ℃.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, by changing the chemical components and production process parameters of the alloy material, the prepared amorphous nanocrystalline alloy strip has excellent crystallization temperature consistency, the subsequent heat treatment efficiency is improved, and the consistency of the magnetic properties of the strip or the iron core after heat treatment is ensured. The amorphous nanocrystalline alloy strip provided by the invention is simple in preparation process and can be widely applied to the preparation of soft magnetic materials. The high lamination coefficient amorphous nanocrystalline alloy strip prepared by the method can be applied to various power or electronic transformer magnetic components.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
In the embodiment, the iron-based amorphous nanocrystalline alloy strip is prepared by adopting a plane flow rapid solidification process, and the adopted raw materials are industrial pure simple substances or alloys, and the specific preparation method is as follows:
firstly, smelting raw materials with a certain proportion into alloy liquid by a smelting furnace, and pouring the smelted alloy liquid into a tundish for temperature adjustment and production rhythm buffering. Then, the alloy liquid was poured into a nozzle ladle having a slit nozzle at the bottom. Alloy liquid in the nozzle bag flows out from the nozzle, spreads on the outer circumferential surface of the copper alloy cooling roller rotating at high speed below the nozzle, and is rapidly cooled to form a continuous thin strip with an amorphous or nanocrystalline structure.
The amorphous nanocrystalline alloy strip in this embodiment has the raw material composition of Fe 79 Si 9 B 12 Wherein the content of Fe which is a ferromagnetic transition metal element is 79at%, and the contents of Si and B which are metalloid elements are 9at% and 12at%, respectively. And analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtain that the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element among different heat ranges is not more than 1.2 percent.
The outer circumferential surface of the cooling roller in this embodiment is polished by a sand paper wheel, and the roughness Ra of the outer circumferential surface of the cooling roller is kept at 0.30 to 0.35 μm at all times.
In the comparison of the composition and crystallization temperature between different heats, 10-20 heats of strips are taken for comparison and relative deviation calculation in the embodiment.
The temperature of the alloy liquid in the nozzle package is continuously measured by adopting a thermocouple, in the embodiment, the temperature fluctuation range of the alloy liquid in the nozzle package is not more than 5 ℃ in different time periods in the same furnace, and the temperature fluctuation range of the alloy liquid in the nozzle package is not more than 7 ℃ among different furnaces.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 14 ℃ in different time periods in the same heat, and the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 29 ℃ among different heat; the fluctuation range of strip stripping temperature in different time periods in the same heat treatment is not more than 22 ℃, and the fluctuation range of strip stripping temperature in different heat treatments is not more than 29 ℃.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 1.5 ℃, and the difference of crystallization temperatures of different heat is not greater than 3.5 ℃.
The amorphous nanocrystalline alloy strip prepared by the method in this example has a width of 143mm and a thickness of 0.024mm.
Example 2
In the embodiment of the invention, the iron-based amorphous nanocrystalline alloy strip is prepared by adopting a plane flow rapid solidification process, and the adopted raw materials are all industrial pure simple substances or alloys, and the specific preparation method is as follows:
firstly, smelting raw materials with a certain proportion into alloy liquid by a smelting furnace, and pouring the smelted alloy liquid into a tundish for temperature adjustment and production rhythm buffering. Then, the alloy liquid was poured into a nozzle ladle having a slit nozzle at the bottom. Alloy liquid in the nozzle bag flows out from the nozzle, spreads on the outer circumferential surface of the copper alloy cooling roller rotating at high speed below the nozzle, and is rapidly cooled to form a continuous thin strip with an amorphous or nanocrystalline structure.
In the comparison of the composition and crystallization temperature between different heats, 10-20 heats of strips are taken for comparison and relative deviation calculation in the embodiment.
The amorphous nanocrystalline alloy strip in this embodiment has the raw material composition of Fe 82 Si 4 B 13 C 1 Wherein the content of Fe which is a ferromagnetic transition metal element is 82at%, and the contents of Si, B and C which are metalloid elements are respectively 4at%, 13at% and 1at%. And analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtain that the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element among different heat ranges is not more than 1.8 percent.
The outer circumferential surface of the cooling roller in this embodiment is polished by a metal brush wheel, and the roughness Ra of the outer circumferential surface of the cooling roller is kept at 0.25 to 0.27 μm at all times.
The thermocouple is adopted to continuously measure the temperature of the alloy liquid in the nozzle package, the temperature fluctuation range of the alloy liquid in the nozzle package at different times in the same furnace is not more than 17 ℃, and the temperature fluctuation range of the alloy liquid in the nozzle package between different furnaces is not more than 19 ℃.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 22 ℃ in different time periods in the same heat, and the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 35 ℃ among different heat; the fluctuation range of strip stripping temperature in different time periods in the same heat treatment is not more than 15 ℃, and the fluctuation range of strip stripping temperature in different heat treatments is not more than 35 ℃.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 0.6 ℃, and the difference of crystallization temperatures of different heat is not greater than 1.1 ℃.
The amorphous nanocrystalline alloy strip prepared by the method in this example has a width of 213mm and a thickness of 0.026mm.
Example 3
In the embodiment of the invention, the iron-based amorphous nanocrystalline alloy strip is prepared by adopting a plane flow rapid solidification process, and the adopted raw materials are all industrial pure simple substances or alloys, and the specific preparation method is as follows:
firstly, smelting raw materials with a certain proportion into alloy liquid by a smelting furnace, and pouring the smelted alloy liquid into a tundish for temperature adjustment and production rhythm buffering. Then, the alloy liquid was poured into a nozzle ladle having a slit nozzle at the bottom. Alloy liquid in the nozzle bag flows out from the nozzle, spreads on the outer circumferential surface of the copper alloy cooling roller rotating at high speed below the nozzle, and is rapidly cooled to form a continuous thin strip with an amorphous or nanocrystalline structure.
In the comparison of the composition and crystallization temperature between different heats, 10-20 heats of strips are taken for comparison and relative deviation calculation in the embodiment.
The amorphous nanocrystalline alloy strip in this embodiment has the raw material composition of Fe 83 Si 3 B 11 C 1 P 2 Wherein the content of Fe which is a ferromagnetic transition metal element is 83at%, and the contents of Si, B, C and P which are metalloid elements are 3at%, 11at%, 1at% and 2at%, respectively. And analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtain that the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element among different heat ranges is not more than 0.7 percent.
In this example, the surface of the cooling roller was polished by using a resin brush wheel containing abrasive grains, and the surface roughness Ra of the cooling roller was kept at 0.30 to 0.35. Mu.m.
The thermocouple is adopted to continuously measure the temperature of the alloy liquid in the nozzle package, the temperature fluctuation range of the alloy liquid in the nozzle package at different times in the same furnace is not more than 3 ℃, and the temperature fluctuation range of the alloy liquid in the nozzle package between different furnaces is not more than 5 ℃.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 12 ℃ in different time periods in the same heat, and the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 21 ℃ among different heat; the fluctuation range of strip stripping temperature in different time periods in the same heat is not more than 13 ℃, and the fluctuation range of strip stripping temperature in different heat ranges is not more than 19 ℃.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 0.9 ℃, and the difference of crystallization temperatures of different heat is not greater than 1.6 ℃.
The amorphous nanocrystalline alloy strip prepared by the method in this example has a width of 170mm and a thickness of 0.026mm.
Example 4
In the embodiment of the invention, the iron-based amorphous nanocrystalline alloy strip is prepared by adopting a plane flow rapid solidification process, and the adopted raw materials are all industrial pure simple substances or alloys, and the specific preparation method is as follows:
firstly, smelting raw materials with a certain proportion into alloy liquid by a smelting furnace, and pouring the smelted alloy liquid into a tundish for temperature adjustment and production rhythm buffering. Then, the alloy liquid was poured into a nozzle ladle having a slit nozzle at the bottom. Alloy liquid in the nozzle bag flows out from the nozzle, spreads on the outer circumferential surface of the copper alloy cooling roller rotating at high speed below the nozzle, and is rapidly cooled to form a continuous thin strip with an amorphous or nanocrystalline structure.
In the comparison of the composition and crystallization temperature between different heats, 10-20 heats of strips are taken for comparison and relative deviation calculation in the embodiment.
The amorphous nanocrystalline alloy strip in this embodiment has the raw material composition of Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 Wherein the content of ferromagnetic transition metal element Fe is 73.5at%, the contents of transition metal elements Cu and Nb are respectively 1at% and 3at%, and the contents of metalloid elements Si and B are respectively 13.5at% and 9at%. Analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtainThe absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element from the target value is not more than 0.6% between different heat levels.
In this example, the surface of the cooling roller was polished by using a sand paper wheel, and the surface roughness Ra of the cooling roller was kept at 0.28 to 0.31 μm all the time.
The thermocouple is adopted to continuously measure the temperature of the alloy liquid in the nozzle package, the temperature fluctuation range of the alloy liquid in the nozzle package at different times in the same furnace is not more than 5 ℃, and the temperature fluctuation range of the alloy liquid in the nozzle package between different furnaces is not more than 8 ℃.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 18 ℃ in different time periods in the same heat, and the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 28 ℃ among different heat; the fluctuation range of strip stripping temperature in different time periods in the same heat is not more than 27 ℃, and the fluctuation range of strip stripping temperature in different heat ranges is not more than 41 ℃.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 1.8 ℃, and the difference of crystallization temperatures of different heat is not greater than 4.8 ℃.
The amorphous nanocrystalline alloy strip prepared by the above method in this example had a width of 120mm and a thickness of 0.014mm.
Example 5
In the embodiment of the invention, the cobalt-based amorphous nanocrystalline alloy strip is prepared by adopting a plane flow rapid solidification process, and the adopted raw materials are all industrial pure simple substances or alloys, and the specific preparation method is as follows:
firstly, smelting raw materials with a certain proportion into alloy liquid by a smelting furnace, and pouring the smelted alloy liquid into a tundish for temperature adjustment and production rhythm buffering. Then, the alloy liquid was poured into a nozzle ladle having a slit nozzle at the bottom. Alloy liquid in the nozzle bag flows out from the nozzle, spreads on the outer circumferential surface of the copper alloy cooling roller rotating at high speed below the nozzle, and is rapidly cooled to form a continuous thin strip with an amorphous or nanocrystalline structure.
In the comparison of the composition and crystallization temperature between different heats, 10-20 heats of strips are taken for comparison and relative deviation calculation in the embodiment.
The raw material components of the amorphous nanocrystalline alloy strip in the example are Co 66 Fe 4 Mn 2 V 2 Si 8 B 18 Wherein the contents of ferromagnetic transition metal elements Co and Fe are respectively 66at% and 4at%, the contents of transition metal elements Mn and V are respectively 2at% and 2at%, and the contents of metal-like elements Si and B are respectively 8at% and 18at%. And analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtain that the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element among different heat ranges is not more than 0.9 percent.
In this embodiment, the surface of the cooling roller is polished by a cloth wheel, and the surface roughness Ra of the cooling roller is always kept between 0.31 and 0.34 mu m.
The thermocouple is adopted to continuously measure the temperature of the alloy liquid in the nozzle package, the temperature fluctuation range of the alloy liquid in the nozzle package at different times in the same furnace is not more than 13 ℃, and the temperature fluctuation range of the alloy liquid in the nozzle package between different furnaces is not more than 5 ℃.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 9 ℃ in different time periods in the same heat, and the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 14 ℃ among different heat; the fluctuation range of strip stripping temperature in different time periods in the same heat is not more than 13 ℃, and the fluctuation range of strip stripping temperature in different heat ranges is not more than 23 ℃.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 0.5 ℃, and the difference of crystallization temperatures of different heat is not greater than 1.2 ℃.
The amorphous nanocrystalline alloy strip prepared by the method in this example has a width of 55mm and a thickness of 0.039mm.
Comparative example 1
As a comparison, cases not conforming to the scope of the present invention were also set as comparative examples, respectively. In this comparative example, the iron-based amorphous nanocrystalline alloy ribbon was prepared in the same manner as in example 1.
The iron-based amorphous nanocrystalline alloy strip of the comparative example comprises the following raw materials in percentage by weight 78 Si 9 B 13 Wherein the content of Fe which is a ferromagnetic transition metal element is 78at%, and the contents of Si and B which are metalloid elements are 9at% and 13at%, respectively. And analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtain that the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element among different heat ranges is not more than 2.9 percent.
The thermocouple is adopted to continuously measure the temperature of the alloy liquid in the nozzle package, the temperature fluctuation range of the alloy liquid in the nozzle package at different times in the same furnace is not more than 6 ℃, and the temperature fluctuation range of the alloy liquid in the nozzle package between different furnaces is not more than 9 ℃.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 22 ℃ in different time periods in the same heat, and the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 29 ℃ among different heat; the fluctuation range of strip stripping temperature in different time periods in the same heat is not more than 16 ℃, and the fluctuation range of strip stripping temperature in different heat ranges is not more than 24 ℃.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 3.3 ℃, and the difference of crystallization temperatures of different heat is not greater than 6.7 ℃.
The amorphous nanocrystalline alloy strip prepared by the above method in this comparative example had a width of 143mm and a thickness of 0.024mm.
Comparative example 2
As a comparison, cases not conforming to the scope of the present invention were also set as comparative examples, respectively. In this comparative example, the iron-based amorphous nanocrystalline alloy ribbon was prepared in the same manner as in example 3.
The iron-based amorphous nanocrystalline alloy strip in the comparative example has the raw material components of Fe 83 Si 3 B 11 C 1 P 2 Wherein the content of Fe which is a ferromagnetic transition metal element is 83at%, and the contents of Si, B, C and P which are metalloid elements are 3at%, 11at%, 1at% and 2at%, respectively. And analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtain that the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element among different heat ranges is not more than 1.3 percent.
The thermocouple is adopted to continuously measure the temperature of the alloy liquid in the nozzle package, the temperature fluctuation range of the alloy liquid in the nozzle package at different times in the same furnace is not more than 18 ℃, and the temperature fluctuation range of the alloy liquid in the nozzle package between different furnaces is not more than 29 ℃.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 11 ℃ in different time periods in the same heat, and the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 18 ℃ among different heat; the fluctuation range of strip stripping temperature in different time periods in the same heat is not more than 21 ℃, and the fluctuation range of strip stripping temperature in different heat ranges is not more than 29 ℃.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 1.1 ℃ and the difference of crystallization temperatures of different heat is not greater than 5.5 ℃.
The amorphous nanocrystalline alloy strip prepared by the above method in this comparative example has a width of 170mm and a thickness of 0.026mm.
Comparative example 3
As a comparison, cases not conforming to the scope of the present invention were also set as comparative examples, respectively. In this comparative example, the iron-based amorphous nanocrystalline alloy ribbon was prepared in the same manner as in example 4.
The iron-based amorphous nanocrystalline alloy strip of the comparative example comprises the following raw materials in percentage by weight 73.5 Cu 1 Nb 3 Si 13.5 B 9 Wherein the content of ferromagnetic transition metal element Fe is 73.5at%, the contents of transition metal elements Cu and Nb are respectively 1at% and 3at%, and the contents of metalloid elements Si and B are respectively 13.5at% and 9at%. And analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtain that the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element among different heat ranges is not more than 1.1 percent.
The thermocouple is adopted to continuously measure the temperature of the alloy liquid in the nozzle package, the temperature fluctuation range of the alloy liquid in the nozzle package at different times in the same furnace is not more than 13 ℃, and the temperature fluctuation range of the alloy liquid in the nozzle package between different furnaces is not more than 18 ℃.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 55 ℃ in different time periods in different heats and is not more than 61 ℃ among different heats; the fluctuation range of strip stripping temperature in different time periods in the same heat is not more than 21 ℃, and the fluctuation range of strip stripping temperature in different heat ranges is not more than 46 ℃.
Sampling and cutting the strip into fragments at different positions in the length direction and the width direction of the strip in the same furnace. Samples were taken at the same location in different heats and sheared into pieces. The crystallization temperature of the sample was measured with a Differential Scanning Calorimeter (DSC). The sample temperature rise rate at the time of measurement was 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 3.5 ℃, and the difference of crystallization temperatures of different heat is not greater than 7.9 ℃.
The amorphous nanocrystalline alloy strip prepared by the above method in this comparative example had a width of 120mm and a thickness of 0.015mm.
Comparative example 4
As a comparison, cases not conforming to the scope of the present invention were also set as comparative examples, respectively. In this comparative example, cobalt-based amorphous nanocrystalline alloy ribbon was prepared in the same manner as in example 5.
The cobalt-based amorphous nanocrystalline alloy strip of the comparative example contains Co as the component 66 Fe 4 V 2 Si 8 B 20 Wherein the contents of ferromagnetic transition metal elements Co and Fe are 66at% and 4at%, respectively, the content of transition metal element V is 2at%, and the contents of metalloid elements Si and B are 8at% and 20at%, respectively. And analyzing the content of each main element in the alloy liquid by adopting a straight spectrometer to obtain that the absolute value of the relative deviation (the ratio of the absolute deviation to the target value) of the actual content of each main element among different heat ranges is not more than 1.2 percent.
The thermocouple is adopted to continuously measure the temperature of the alloy liquid in the nozzle package, the temperature fluctuation range of the alloy liquid in the nozzle package at different times in the same furnace is not more than 6 ℃, and the temperature fluctuation range of the alloy liquid in the nozzle package between different furnaces is not more than 9 ℃.
Continuously measuring the stripping temperature of the roll surface and the strip by using an infrared thermometer or a thermal infrared imager, wherein the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 26 ℃ in different time periods in the same heat, and the temperature fluctuation range of the outer circumferential surface of the cooling roll is not more than 35 ℃ among different heat; the fluctuation range of strip stripping temperature in different time periods in the same heat is not more than 52 ℃, and the fluctuation range of strip stripping temperature in different heat ranges is not more than 66 ℃.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, sampling and cutting into fragments at the same position in different heat, measuring the crystallization temperature of the sample by using a Differential Scanning Calorimeter (DSC), and measuring at a sample heating rate of 20 ℃/min. In this embodiment, the difference of crystallization temperatures of different portions of the same heat is not greater than 4.5 ℃, and the difference of crystallization temperatures of different heat is not greater than 6.8 ℃.
The amorphous nanocrystalline alloy strip prepared by the above method in this comparative example has a width of 60mm and a thickness of 0.038mm.
Table 1 shows the relative deviations of the actual contents of the main elements in the alloy liquid from the target values and the process parameters used for producing the strip.
Sampling and cutting into fragments at different positions in the length direction and the width direction of the strip in the same heat, and sampling and cutting into fragments at the same position in different heat. The crystallization temperature of the sample was measured with a Differential Scanning Calorimeter (DSC). The sample temperature rise rate at the time of measurement was 20 ℃/min. The measurement data are shown in Table 2.
As can be seen from tables 1 and 2, when the technical scheme specified by the invention is adopted, the crystallization temperature consistency of the strip material can achieve the purpose of the invention, and the consistency of the subsequent iron core heat treatment process and the consistency of the magnetic properties of iron core products can be ensured.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. A method for preparing an amorphous nanocrystalline alloy strip is characterized in that,
melting raw materials in a certain proportion into alloy liquid by a smelting furnace;
pouring the alloy liquid into a nozzle bag with a nozzle at the bottom, wherein the fluctuation range of the temperature of the alloy liquid in the nozzle bag is not more than 20 ℃;
the alloy liquid flows out of the nozzle, spreads on the outer circumferential surface of the cooling roller rotating at a high speed below the nozzle, and the fluctuation range of the temperature of the outer circumferential surface of the cooling roller before entering the puddle is not more than 50 ℃;
the alloy liquid is rapidly cooled to form a continuous thin strip with an amorphous or nanocrystalline structure, and the fluctuation range of the stripping temperature of the strip material when the outer circumferential surface of the cooling roller is stripped is not more than 50 ℃;
the difference of crystallization temperatures of the strips at different positions in the length and width directions of the strips in the same furnace is not more than 2 ℃;
the difference of crystallization temperatures of the strips is not more than 5 ℃ among different heats;
the amorphous nanocrystalline alloy strip raw material composition has the following general expression:
X a Y b Z c
wherein X is at least one of ferromagnetic transition metal elements Fe, co and Ni, and the total content a is 65-85at%; y is a transition metal element Ti, zr, hf, V, nb, ta, cr, mo, W, mn, cu, ag, au, zn and at least one of Al and Sn, and the total content b is 0-10at%; z is at least one of amorphous forming elements Si, B, P, C, and the total content c is 15-30at%, and the alloy also contains 0-0.5at% of impurity elements.
2. The method for producing an amorphous nanocrystalline alloy ribbon according to claim 1, wherein,
and the difference of crystallization temperatures of the strips at different positions in the length and width directions of the strips in the same furnace is not more than 1 ℃.
3. The method for producing an amorphous nanocrystalline alloy ribbon according to claim 1, wherein,
the difference in crystallization temperature of the strip material between different heats is not more than 2 ℃.
4. The method for producing an amorphous nanocrystalline alloy ribbon according to any one of claims 1 to 3, wherein the ribbon has a width of 50 to 300mm and a thickness of 10 to 50 μm.
5. The method for producing an amorphous nanocrystalline alloy ribbon according to claim 4, wherein,
the temperature of the outer circumferential surface of the cooling roll does not fluctuate by more than 30 ℃ before entering the puddle.
6. The method for producing an amorphous nanocrystalline alloy ribbon according to claim 5, wherein,
the strip has a fluctuation range of the peeling temperature of not more than 30 ℃ when peeling the outer circumferential surface of the cooling roll.
7. The method for producing an amorphous nanocrystalline alloy ribbon according to claim 5, wherein,
the outer circumferential surface of the cooling roller is polished by adopting a sand paper wheel, a sand cloth wheel, a metal brush wheel or a resin brush wheel containing abrasive particles, and the roughness Ra of the outer circumferential surface of the cooling roller is always kept between 0.20 and 0.40 mu m.
8. Amorphous nanocrystalline alloy ribbon produced according to the method of any one of claims 1-7.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105755404A (en) * 2016-05-16 2016-07-13 河北工业大学 Fe-based amorphous/nanocrystalline soft magnetic alloy thin belt and preparation method thereof

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US10316396B2 (en) * 2015-04-30 2019-06-11 Metglas, Inc. Wide iron-based amorphous alloy, precursor to nanocrystalline alloy
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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