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Composite multilayer crucible for beryllium aluminum alloy induction melting and preparation method thereof

A beryllium aluminum alloy, induction melting technology, applied in the field of composite multi-layer crucible for beryllium aluminum alloy induction melting and its preparation, to achieve the effect of no spatter, high structural strength and stable chemical properties

Active Publication Date: 2021-10-15
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a composite multilayer crucible for beryllium-aluminum alloy induction melting, which solves the problem that there is no suitable crucible for beryllium-aluminum alloy induction melting in the prior art

Method used

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  • Composite multilayer crucible for beryllium aluminum alloy induction melting and preparation method thereof
  • Composite multilayer crucible for beryllium aluminum alloy induction melting and preparation method thereof
  • Composite multilayer crucible for beryllium aluminum alloy induction melting and preparation method thereof

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Embodiment 1

[0060] as attached Figure 1-3 As shown, the present invention provides a composite multilayer crucible for beryllium-aluminum alloy induction melting, comprising an inner crucible 1, a middle crucible 2 and an outer crucible 3 fixedly connected sequentially from the inside to the outside; the inner crucible 1, The tops of the middle crucible 2 and the outer crucible 3 are straight cylindrical; the bottoms of the inner crucible 1 and the middle crucible 2 are hemispherical; the outer surface of the bottom of the outer crucible 3 is Rectangular with a hemispherical bottom inner surface.

[0061] The outer surface of the middle crucible 2 is integrally processed into a threaded surface 5, and its inner surface is a flat surface; the top inner wall of the inner crucible 1 is circumferentially provided with a circle of concave diversion grooves 4, and the inner layer The inner surface of the crucible 1 is a flat surface.

[0062] The composite multi-layer crucible for beryllium ...

Embodiment 2

[0070] This embodiment provides a method for preparing a composite multilayer crucible for beryllium-aluminum alloy induction melting. The structure of the composite multilayer crucible in this embodiment is as shown in Example 1, wherein the thickness of the inner layer crucible is 10 mm, and the middle layer The thickness of the crucible is 6mm, and the thickness of the outer crucible is 7mm;

[0071] Its specific preparation method is:

[0072] (1) Preparation of inner crucible

[0073] Ingredients: Prepare raw materials according to the following parts by weight: 96.5 parts of beryllium oxide (BeO), with a particle size of 500 mesh; 1.5 parts of calcium oxide (CaO), with a particle size of 350 mesh; 2 o 3 ) 1.0 part, particle size 350 mesh; silicon carbide (SiC) 1.0 part, particle size 500 mesh.

[0074] Add the above-mentioned raw materials and water twice their weight into a ball milling jar. The material of the grinding balls is corundum, and the ball-to-material rat...

Embodiment 3

[0085] This embodiment provides a method for preparing a composite multilayer crucible for beryllium-aluminum alloy induction melting. The structure of the composite multilayer crucible in this embodiment is as shown in Example 1, wherein the thickness of the inner layer crucible is 8mm, and the middle layer The thickness of the crucible is 5mm, and the thickness of the outer crucible is 8mm;

[0086] Its specific preparation method is:

[0087] (1) Preparation of inner crucible

[0088] Ingredients: prepare raw materials according to the following parts by weight: 95 parts of beryllium oxide (BeO), particle size 600 mesh; 1.0 part of calcium oxide (CaO), particle size 300 mesh; yttrium oxide (Y 2 o 3 ) 1.0 parts, particle size 300 mesh; silicon carbide (SiC) 3.0 parts, particle size 550 mesh.

[0089] Add the above-mentioned raw materials and water twice the weight into the ball mill jar. The material of the grinding balls is corundum, and the ball-to-material ratio is 3:1...

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Abstract

The invention discloses a composite multilayer crucible for beryllium-aluminum alloy induction melting and a preparation method thereof, which solves the problem in the prior art that there is no crucible suitable for beryllium-aluminum alloy induction melting. The composite multi-layer crucible of the present invention comprises an inner layer crucible, a middle layer crucible and an outer layer crucible which are fixedly connected sequentially from the inside to the outside; the inner layer crucible is composed of 92.5-97.5 parts of beryllium oxide, 1.0-2.0 parts of calcium oxide, and 0.5-2.0 parts of yttrium oxide. 2.0 parts, made of 1.0-3.5 parts of silicon carbide; the middle crucible is made of graphite; the outer crucible is made of 90-95 parts of calcium oxide, 1-3 parts of magnesium oxide, 2-4 parts of yttrium oxide, and 1-1.5 parts of zirconia , made from 0.5 to 1.5 parts of clay. The composite multilayer crucible structure of the invention has high structural strength and can shield a considerable part of the induced magnetic field. The chemical properties are stable, there is no splashing of the melt during the melting process, the degree of oxygenation is low, and some single-layer structures are replaceable and reusable, with long service life.

Description

technical field [0001] The invention belongs to the field of heat-resistant materials for high-temperature smelting, and in particular relates to a composite multilayer crucible for beryllium-aluminum alloy induction smelting and a preparation method thereof. Background technique [0002] Since the melting point of beryllium aluminum alloys with high beryllium content is generally higher than 1000 ° C, and the melt must always be kept in a relatively high vacuum environment, the current melting technology of cast beryllium aluminum alloys mainly uses vacuum induction melting, vacuum arc melting and high vacuum electron beam melting And other technologies. Among them, vacuum induction melting has the characteristics of large melting volume, relatively simple process rules, and uniform distribution of alloy components in the melt. Combined with the mold shell prepared by 3D printing, investment casting of beryllium aluminum alloy can be realized, and various shapes and complex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/08C04B35/01C04B35/622C04B35/626C04B35/63B32B9/00B32B9/04B32B7/12
Inventor 余良波杨苏王晶李鱼飞张晨张俊
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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