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Stepped cooling and continuous casting method of massive amorphous alloy

An amorphous alloy, step-by-step cooling technology, which is used in the continuous casting of amorphous alloys and the continuous casting of zirconium-based bulk amorphous alloys by step cooling , to achieve the effect of shortening the production cycle, saving mold manufacturing costs, and simple process methods

Inactive Publication Date: 2004-12-15
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, during conventional continuous casting, the alloy liquid is poured into the condenser at a certain superheated temperature. The superheated heat at the melting point temperature significantly affects the cooling strength of the alloy liquid in the condenser, making continuous casting of large amorphous alloys very difficult

Method used

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  • Stepped cooling and continuous casting method of massive amorphous alloy
  • Stepped cooling and continuous casting method of massive amorphous alloy

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Embodiment Construction

[0022] As shown in the figure, the continuous casting device of the present invention adds a liquid flow disperser 4 on the basis of the existing device. There is a heating element 3 on the outside of the crucible 1, and a column with an adjustable flow rate is placed in the middle of the crucible 1. There is a liquid flow diffuser 4 under the plug 2 and the crucible 1, and a condenser 6 filled with cooling liquid 7 is arranged under the liquid flow diffuser 4.

[0023] The alloy is melted and overheated in the crucible 1 (resistance heating, induction heating or other heating methods are acceptable), and poured into the liquid flow distributor 4 made of refractory material, and its flow rate can be controlled by adjusting the lifting height of the plunger 2 . The alloy liquid is divided into many fine streams after passing through the liquid flow disperser 4, and such streams are cooled in the process of free fall, and the cooling intensity is controlled by adjusting the type,...

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Abstract

The large block amorphous alloy stepwise cooling continuous casting method includes: firstly, melting alloy material in crucible, heating to above melting point, heat-insulating, then removing plunger of crucible to make molten alloy flow out from cast gate of crucible bottom portion and flow into lower liquid flow disperser, quickly-cooling the dispersed fine-small molten alloy flow to about nasal tip temp. Tn of nucleation C curve, then pouring the low-temp. molten alloy into casting mould, further cooling to below vitrification point and condensing to obtain the invented amorphous alloy whose mechanical and physicochemical properties are identical to that of copper mould heavy cast amorphous material.

Description

Technical field: [0001] The invention relates to an amorphous alloy continuous casting method, in particular to a zirconium-based bulk amorphous alloy step-by-step cooling continuous casting method, which belongs to the technical field of metal material casting. Background technique: [0002] Compared with ordinary crystalline alloys, amorphous alloys have many superior mechanical properties and physical and chemical properties. Therefore, bulk casting amorphous alloys with three-dimensional dimensions of more than 1 mm have been developed since the 1990s. extensive attention in the materials science and engineering community. However, this type of material still requires a high cooling rate during casting, and its preparation methods are currently mainly limited to overall liquid quenching, copper mold casting, metal high pressure casting, vacuum suction casting, squeeze casting, arc melting and furnace condensation etc. (Fu Li, Development Status of Slowly Cooled Bulk Amo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/112B22D27/04C22C45/00
Inventor 李金富阎志杰何顺荣周尧和
Owner SHANGHAI JIAO TONG UNIV
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