An electron beam suspension zone melting furnace and melting method

Abstract

The invention discloses an electron-beam floating zone smelting furnace and a smelting method. The electron-beam floating zone smelting furnace comprises a furnace body and an argon filled fast cooling system, a water cooling system and a high-vacuum unit which are matched with the furnace body, wherein the furnace body comprises an upper furnace chamber and a lower furnace chamber, and the upper furnace chamber and the lower furnace chamber are in longitudinal and sealed butt joint in a working state; a loading fixing device for fixing a material bar is fixedly mounted in the working area of the furnace body, the working area of the furnace body is provided with a ring-type electron gun, the ring-type electron gun is provided with an electron gun moving system, narrow-area melting of the raw material bar is achieved under high-energy heat, gas is separated out, impurities are evaporated and single crystals are generated in the whole complex physical and chemical process, and smelting is achieved.

Description

technical field [0001] The invention relates to the smelting technology of high-purity refractory metals, in particular to an electron beam suspension area melting furnace and a smelting method. Background technique [0002] With the rapid development of science and technology, many high-tech fields such as aviation, aerospace, military industry, nuclear energy and bioengineering, and related equipment manufacturing and automatic control industries have also advanced rapidly. High-purity refractory metals and their alloy single crystal materials are due to their Its superior physical and chemical properties and mechanical properties have attracted more and more attention from scientists and technicians. Many research institutions at home and abroad have also made great investment in the preparation method of this high-purity refractory and alloy single crystal structure material. [0003] The main working principle of the electron beam melting technology is that the electro...

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Problems solved by technology

[0004] However, the electron guns of the current electron beam melting furnace are fixed in a fixed way, and the melting effect of some high-purity refractory and alloy single crystal structure materials is not good; and the current electron beam melting method generally uses the metal to be processed It is first melted, placed in a crucible, and then recombined to obtain a rod of new performance material (purified and made into a single crystal material). During these processes, the crucible is likely to be polluted, resulting in the purity of the final product obtained after smelting. to request

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