Pressure control glass melting device and method

Abstract

The invention relates to a pressure control glass melting device and a pressure control glass melting method. The pressure control glass melting device comprises a closed furnace body; the furnace body comprises a charging part, a melting part and a discharging part sequentially from top to bottom, wherein the melting part is heated by an induction heating mode. The furnace body adopts a sealing structure, the melting pressure in the furnace can be controlled to 10<-3> to 0.3 MPa, vacuum negative pressure and gas positive pressure can be realized conveniently, or oxidation, reduction and inertatmosphere can be formed through gases with different properties; the consistency of the pressure and atmosphere in the furnace is guaranteed and influenced by impurities such as external air and water is avoided; meanwhile, component control in the melting process of the raw materials of the glass is facilitated, consistency of composition and performance of the glass is benefited and batch application of products is facilitated. A water-cooled metal furnace body avoids dust pollution, the temperature of the furnace wall is close to room temperature, and pollution to the glass caused by erosion of the oxidation and reduction atmospheres is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of glass preparation, in particular to a pressure-controlled glass melting device and method. Background technique [0002] With the development of modern optoelectronic information technology, new special glass materials with special optical, electrical and mechanical properties are developing rapidly, such as laser glass, infrared glass, magneto-optical glass, semiconductor glass, etc., in the fields of military industry, aerospace, optical communication, etc. Applications are increasingly widespread. [0003] Special performance often means special material composition, special preparation technology and special equipment. In order to achieve or improve certain special properties, the melting of special glass must generally be carried out under special melting atmosphere and pressure. For example, germanate and aluminate system infrared glass must be melted in a dry and anhydrous environment to eliminat...

AI Technical Summary

Problems solved by technology

However, the above methods have great limitations. The related devices and technologies are not universal, and most of them are only partial improvements of traditional equipment technologies. Meet the melting requirements of different varieties of special glass

In addition, at present, most special glass is still melted by refractory material heat preservation and resistance heating, the melting efficiency is low, and the erosion under high temperature and special atmosphere can easily pollute the glass, which is not conducive to the preparation of high-performance glass

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