High-vacuum continuous casting forming equipment and process for precious metal layered composite materials

Abstract

The invention belongs to the field of continuous casting technology, and in particular relates to a high-vacuum continuous casting forming equipment and process for precious metal layered composite materials. It is composed of device, dummy mechanism, secondary cooling device and auxiliary equipment. The continuous casting process is as follows: equipment assembly and reliable connection; vacuuming the furnace body; heating and melting the two metals; first performing continuous casting of the outer layer metal, and then making the core metal enter the outer layer metal tube, in the composite crystallizer and Under the action of the secondary cooling device, it is solidified and combined with the outer metal. When the continuous casting bar reaches a certain length, it can be sawn off as needed. The advantages are: it can guarantee the high-vacuum continuous casting environment required by precious metals, the smelting and forming of inner and outer metals, and the compounding of bimetallic interfaces are all realized in a state of no oxidation and pollution; the preparation process is short and efficient.

Description

technical field [0001] The invention belongs to the technical field of continuous casting, and in particular provides a bimetal suitable for the melting point of the outer layer metal higher than the melting point of the core metal, especially a bimetal primary casting that requires high smelting and casting conditions, is easy to absorb gas, and is easy to oxidize. High-vacuum continuous casting forming equipment and technology of precious metal layered composite materials for composite forming. [0002] technical background [0003] Precious metal wires such as gold and silver are key materials necessary for the electronic information industry due to their excellent electrical conductivity, welding performance and stability. With the rapid development of the electronic information industry, people have higher and higher requirements for metal wires, with thinner wire diameters, higher conductivity, more suitable strength and stiffness, and lower costs. Traditional single-m...

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Problems solved by technology

However, the limitation of the conventional one-time continuous casting direct compounding method is that the melting, heat preservation, and casting of metals are all in the atmospheric environment. Even metals with stable chemical properties such as gold and silver cannot meet the requirements of the process when the quality of the finished product is high. Require

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