A method for continuous preparation of iron-based amorphous thin strip

An iron-based amorphous and thin strip technology, which is applied in the field of amorphous alloy preparation, can solve the problem that detailed parameters such as melting temperature, heat preservation measures, cooling speed, and casting and rolling force have not been disclosed, and no specific process protection nodes and technical implementation plans have been seen. and other problems, to achieve the effect of small deformation, inhibit the formation and growth of crystal nuclei, and increase the cooling rate

Active Publication Date: 2021-02-05
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent (publication number CN1486800A) discloses a continuous casting and rolling technology of bulk amorphous alloys. The metal melt melted in the crucible is injected into two relatively rotating water-cooled rolls, and a bulk amorphous plate is prepared by double-roll casting and rolling. , rods, etc., but the patent does not see specific process protection nodes and technical implementation plans, and does not disclose detailed parameters such as melting temperature, heat preservation measures, flow control measures, cooling speed, casting and rolling force, etc.

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  • A method for continuous preparation of iron-based amorphous thin strip
  • A method for continuous preparation of iron-based amorphous thin strip
  • A method for continuous preparation of iron-based amorphous thin strip

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Experimental program
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Effect test

Embodiment 1

[0039] Alloy composition: Fe 69 C 5 Si 3 B 5 P 8 Cr 3 Al 2 Mo 5 (atomic percentage at.%, the same below);

[0040] Distribution method: deep into the roll gap;

[0041] Preparation process:

[0042] a. Prepare 20kg of raw material according to the atomic percentage, put it into a vacuum induction melting furnace, and evacuate it to 0.05Pa, heat the alloy raw material until it is completely melted, and continue melting at 1500°C for 10 minutes.

[0043] b. Turn off the vacuum pump, fill the vacuum induction melting furnace with high-purity argon with a volume purity of 99.999% to atmospheric pressure, open the gate valve, put down the guide tube, and pass the alloy through the guide tube (the preheating temperature of the guide tube 1000℃) into the tundish protected by high-purity argon.

[0044] c. After the alloy is soaked in the tundish, open the stopper, and evenly distribute the alloy melt through the distribution nozzle (the preheating temperature of the distrib...

Embodiment 2

[0049] Alloy composition: Fe 69 C 5 Si 3 B 5 P 8 Cr 3 Al 2 Mo 5 ;

[0050] Distribution method: deep into the roll gap;

[0051] Preparation process:

[0052] a. Prepare 20kg of raw material according to the atomic percentage, put it into a vacuum induction melting furnace, and evacuate it to 0.03Pa, heat the alloy raw material until it is completely melted, and continue melting at 1500°C for 20 minutes.

[0053] b. Turn off the vacuum pump, fill the vacuum induction melting furnace with high-purity argon with a volume purity of 99.999% to atmospheric pressure, open the gate valve, put down the guide tube, and pass the alloy through the guide tube (the preheating temperature of the guide tube 900°C) into the tundish protected by high-purity argon.

[0054] c. After the alloy is soaked in the tundish, open the stopper, and evenly distribute the alloy melt through the distribution nozzle (the preheating temperature of the distribution nozzle is 1200°C) into the gap of ...

Embodiment 3

[0059] Alloy composition: Fe 69 C 5 Si 3 B 5 P 8 Cr 3 Al 2 Mo 5 ;

[0060] Distribution method: deep into the roll gap;

[0061] Preparation process:

[0062] a. Prepare 20kg of raw material according to the atomic percentage, put it into a vacuum induction melting furnace, and evacuate it to 0.08Pa, heat the alloy raw material until it is completely melted, and continue melting at 1400°C for 20 minutes.

[0063] b. Turn off the vacuum pump, fill the vacuum induction melting furnace with high-purity argon with a volume purity of 99.999% to atmospheric pressure, open the gate valve, put down the guide tube, and pass the alloy through the guide tube (the preheating temperature of the guide tube 950°C) into the tundish protected by high-purity argon.

[0064] c. After the alloy is soaked in the tundish, open the stopper, and evenly distribute the alloy melt through the distribution nozzle (the preheating temperature of the distribution nozzle is 1200°C) into the gap of ...

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Abstract

The invention belongs to the field of amorphous alloy preparation, and in particular relates to a method for continuously preparing iron-based amorphous alloy thin strips by using a double-roller method. First, melt the alloy raw material or the preliminarily prepared master alloy in a vacuum induction melting furnace to obtain an iron-based amorphous master alloy melt. After the temperature control meets the requirements, fill in argon and open the gate between the vacuum induction melting furnace and the tundish. The valve guides the melt into the tundish protected by high-purity argon through the preheated runner. After the flow control stopper of the tundish is opened, the alloy melt is uniformly distributed through the distribution nozzle and injected into the gap of the casting roll, and is cooled by the water-cooled casting roll to form an amorphous strip. Import the coiling device. The whole casting-rolling-cooling-coiling process is completed in the casting machine cavity protected by high-purity argon. In the present invention, the amorphous formation process is short, the cooling rate is fast, and the preparation process is continuous. Using the method of the present invention, the iron-based amorphous thin strip can be prepared efficiently and continuously, and the application of the iron-based amorphous alloy is promoted.

Description

technical field [0001] The invention belongs to the field of amorphous alloy preparation, and in particular relates to a method for continuously preparing iron-based amorphous alloy thin strips by using a double-roller method. Background technique [0002] Amorphous alloy, also known as metallic glass or glassy alloy, is a new type of special alloy material whose material state is obviously different from that of crystalline state, which is prepared by modern rapid solidification metallurgy technology. Due to the unique atomic structure arrangement and metal bond composition of amorphous alloys, amorphous alloys have better mechanical, physical and chemical properties than traditional crystalline metal materials. This makes amorphous alloys have broad application prospects in aerospace, weapon industry, precision instruments, biomedicine and power transmission. [0003] The preparation of early amorphous alloys required a large cooling rate (>10 6 K / s), at that time, am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02B22D11/06B22D11/14
Inventor 张晨阳袁国张元祥王洋康健李振磊王黎筠王国栋
Owner NORTHEASTERN UNIV LIAONING
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