Method for prolonging service life of amorphous alloy smelting crucible and smelting method for amorphous alloy

An amorphous alloy and crucible technology, which is applied to the device for coating liquid on the surface, coating, surface pretreatment, etc., can solve problems such as failure of the crucible, and achieve the effect of prolonging the service life.

Inactive Publication Date: 2016-07-20
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention overcomes the technical problem of crucible failure due to damage to the inner wall of the crucible in the prior art, and provides a method for improving the service life of the crucible for smelting amorphous alloys, especially suitable for smelting amorphous alloys with high activity and good fluidity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Crucible treatment process: 1. Preheat the alumina crucible to 200°C; 2. Add 15 parts by weight of zirconia powder (median particle size D50 is 2 microns) to 85 parts by weight of alcohol; 3. Fully stir and shake to form homogeneous suspension. 4. Spray the above-mentioned suspension onto the inner wall of the preheated crucible with a coating thickness of 2-5 microns; after 1 minute, add zirconium-based amorphous alloy raw materials (Zr 55 Al 10 Cu 30 Ni 5 ) for smelting.

[0036] Alloy smelting process: The smelting furnace selected for smelting is a 600KG vacuum induction melting furnace, and 400KG of zirconium alloy raw material is added to each furnace, the refining temperature is 1100°C, and the refining temperature is kept for 10 minutes. After refining, the alloy is poured.

[0037] After the alloy is cast, the ingot is sampled for component testing, and the residue in the crucible after casting is cleaned. After the temperature in the crucible drops to abou...

Embodiment 2

[0039] Crucible treatment process: 1. Preheat the alumina crucible to 100°C; 2. Add 25 parts by weight of zirconia powder (median particle size D50 is 5 microns) to 75 parts by weight of alcohol; 3. Fully stir and shake to form homogeneous suspension. 4. Spray the above-mentioned suspension onto the inner wall of the preheated crucible with a coating thickness of 5-10 microns; after 5 minutes, fill in zirconium-based amorphous alloy raw materials (Zr 55 Al 10 Cu 30 Ni 5 ) for smelting.

[0040] Alloy smelting process: The smelting furnace selected for smelting is a 600KG vacuum induction melting furnace, and 400KG of zirconium alloy raw material is added to each furnace, the refining temperature is 1100°C, and the refining temperature is kept for 10 minutes. After refining, the alloy is poured.

[0041] After the alloy is cast, the ingot is sampled for component testing, and the residue in the crucible after casting is cleaned. After the temperature in the crucible drops ...

Embodiment 3

[0054] Crucible treatment process: 1. Preheat the mullite crucible to 50°C; 2. Add 10 parts by weight of zirconia powder (median particle size D50 is 2 microns) to 90 parts by weight of alcohol; 3. Fully stir and shake, A homogeneous suspension was formed. 4. Spray the above suspension onto the inner wall of the preheated crucible with a coating thickness of 2-5 microns; after 20 minutes, add copper-based amorphous alloy raw materials (Cu 46 Zr 42 Al 7 Y 5 ) for smelting.

[0055] Alloy smelting process: The smelting furnace selected for smelting is a 600KG vacuum induction melting furnace, 400KG of alloy raw materials are added to each furnace, the refining temperature is 1100°C, and the refining temperature is kept for 10 minutes. After refining, the alloy is poured.

[0056] After the alloy is cast, the ingot is sampled for component testing, and the residue in the crucible after casting is cleaned. After the temperature in the crucible drops to about 300°C, continue t...

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Abstract

The invention provides a method for prolonging the service life of an amorphous alloy smelting crucible. The method comprises the steps that inorganic powder is added into a solvent to prepare suspension liquid; then, the inner wall of the crucible is sprayed and coated with the suspension liquid and subjected to short-time drying at the temperature lower than 600 DEG C, and a protective coating is formed on the inner wall of the crucible; and the inorganic powder is inorganic oxides and / or inorganic nitrides. The crucible is processed through the method provided by the invention, and the method is simple, easy to carry out, low in cost and remarkable in effect.

Description

technical field [0001] The invention belongs to the field of zirconium-based amorphous alloy smelting, and more specifically, the invention relates to a method for improving the service life of an amorphous alloy smelting crucible and a method for smelting an amorphous alloy. Background technique [0002] Amorphous alloys have been a research hotspot since they were first discovered in 1960. In the 1990s, the multi-element alloying method was adopted to reduce the critical cooling rate of amorphous alloys, realize the preparation of bulk amorphous alloys, and make the engineering application of such materials possible. The structure of short-range order and long-range disorder of amorphous alloy makes it have excellent mechanical properties such as high strength, high elastic limit, and good wear resistance. [0003] Due to its excellent amorphous forming ability, zirconium-based amorphous has become one of the earliest commercialized bulk amorphous. In the smelting of zirc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10B05D1/02B05D3/02
Inventor 李运春朱琦
Owner BYD CO LTD
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