Method for continuously preparing copper-based amorphous thin strip

A thin strip, amorphous technology, applied in the field of amorphous alloy preparation, can solve the problem that no specific process protection node and technical implementation plan, smelting temperature, heat preservation measures cooling rate, casting and rolling force and other detailed parameters are not disclosed. , to achieve the effect of small deformation, good heat conduction under pressure, and large cooling rate

Active Publication Date: 2019-05-31
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.

Method used

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  • Method for continuously preparing copper-based amorphous thin strip
  • Method for continuously preparing copper-based amorphous thin strip
  • Method for continuously preparing copper-based amorphous thin strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Alloy composition: (Cu 60 Zr 20 Hf 10 Ti 10 ) 99.9 O 0.1 (Atomic percentage at.%, the same below);

[0039] Distribution method: deep roll gap cloth flow;

[0040] Preparation process:

[0041] a. Prepare 20kg of raw materials according to atomic percentage, put them into a vacuum induction melting furnace, and evacuate to 0.05 Pa, heat the alloy raw materials until they are completely melted, and continue smelting at 1500°C for 10 minutes.

[0042] b. Turn off the vacuum pump, fill the vacuum induction melting furnace with 99.999% pure argon to atmospheric pressure, open the gate valve, lower the draft tube, and pass the alloy through the draft tube (the preheating temperature of the draft tube) (920℃) into the tundish protected by high-purity argon.

[0043] c. After the alloy is soaked in the tundish, open the stopper, and evenly distribute the alloy melt through the flow nozzle (the preheating temperature of the flow nozzle is 1150 ℃) into the roll gap of the casting roll, s...

Embodiment 2

[0048] Alloy composition: (Cu 46 Zr 42 Al 7 Y 5 ) 99.9 O 0.1 ;

[0049] Distribution method: deep roll gap cloth flow;

[0050] Preparation process:

[0051] a. Prepare 20kg of raw materials according to atomic percentage, put them into a vacuum induction melting furnace, and evacuate to 0.03Pa, heat the alloy raw materials until they are completely melted, and continue smelting at 1400°C for 20 minutes.

[0052] b. Turn off the vacuum pump, fill the vacuum induction melting furnace with 99.999% pure argon to atmospheric pressure, open the gate valve, lower the draft tube, and pass the alloy through the draft tube (the preheating temperature of the draft tube) (900℃) into the tundish protected by high-purity argon.

[0053] c. After the alloy is soaked in the tundish, open the stopper rod, and evenly distribute the alloy melt through the flow nozzle (the preheating temperature of the flow nozzle is 1100 ℃) into the roll gap of the casting roll, so that the alloy is quickly cooled and r...

Embodiment 3

[0058] Alloy composition: (Cu 60 Zr 20 Hf 10 Ti 10 ) 99.9 O 0.1 ;

[0059] Distribution method: deep roll gap cloth flow;

[0060] Preparation process:

[0061] a. Prepare 20kg of raw materials according to atomic percentage, put them into a vacuum induction melting furnace, and evacuate to 0.08Pa, heat the alloy raw materials until they are completely melted, and continue smelting at 1500°C for 10 minutes.

[0062] b. Turn off the vacuum pump, fill the vacuum induction melting furnace with 99.999% high-purity argon to atmospheric pressure, open the gate valve, lower the draft tube, and pass the alloy through the draft tube (the preheating temperature of the draft tube is 900 ℃) into the tundish protected by high-purity argon.

[0063] c. After the alloy is soaked in the tundish, open the stopper, and evenly distribute the alloy melt through the flow nozzle (the preheating temperature of the flow nozzle is 1150 ℃) into the roll gap of the casting roll, so that the alloy is quickly cool...

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Abstract

The invention belongs to the field of amorphous alloy preparation, and particularly relates to a method for continuously preparing a copper-based amorphous thin strip through a double-roller method. The method comprises the steps that alloy raw materials or preliminarily-prepared master alloy are molten in a vacuum induction melting furnace to obtain a copper-based amorphous master alloy melt, after temperature control meets requirements, argon is introduced, a gate valve between the vacuum induction melting furnace and a tundish is opened, and the melt is guided into the tundish with high-purity argon shield through a preheating flow pass; after a flow control plug bar of the tundish is opened, the alloy melt is injected into a casting roller gap after being evenly distributed through a distribution nozzle and cooled through a water cooling casting roller to form an amorphous strip, and the amorphous strip is cooled through a row roller and guided into rolling equipment. The whole cast rolling-cooling-rolling process is completed in a casting machine cavity with high-purity argon shield. The amorphous alloy forming process is short, the cooling speed is high, the preparation process is continuous, the copper-based amorphous thin strip can be efficiently and continuously prepared by means of the method, and application and development of amorphous alloy are promoted.

Description

Technical field [0001] The invention belongs to the field of amorphous alloy preparation, and specifically relates to a method for continuously preparing a copper-based amorphous alloy thin strip by using a double-roll method. Background technique [0002] Amorphous alloy, also called metallic glass (Metallic Glass) or glass alloy (Glassy Alloy), is a new and special alloy material prepared by applying modern rapid solidification metallurgy technology with a material state that is obviously different from that of crystalline state. 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 requires a large cooling rate (> 10 6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/06C22C1/00C22C45/00
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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