Glass is a widely used inorganic non-metallic material with a wide range of applications. They can be used in a wide range of fields, including architecture, household goods, art, and musical instrument making. In addition to the commonly used tempered and patterned glass, there are also types with higher technical requirements, such as optical glass and tinted glass. This article will introduce the working principle of the float glass furnace and focus on what kind of furnace the all-electric glass melting furnace is.
1. Working principle of float glass tank.
The working principle is that two liquids have different densities, so one floats on top and the heavier one floats to the bottom. Float glass is formed in a tin bath. That is, the molten glass liquid flows continuously from the overflow channel and the flow channel into the tin bath, spreads on the surface of the tin liquid, and flows forward due to the attractive force of the transfer roller. In certain temperature systems, surface tension and gravity are used to complete the alignment and thinning. After cooling, the glass is lifted by a roller table and leaves the tin bath and enters an annealing lehr for cross-cutting, inspection and packaging. This specialized process produces versatile, high-quality float glass with high productivity and long operating cycles. Features of float glass: smooth surface without ripples, good transmittance. Flexible function matching to reduce cutting losses. We can provide the necessary materials for manufacturing at different processing levels.
2. What is an all-electric glass melting furnace?
All-electric glass melting furnace: also called all-electric melting furnace, also called electric melting furnace. When it was discovered that hot glass conducts electricity, it became possible to melt glass with electricity as a heat source, and electric melting furnaces began to be used to melt glass. Electric melting furnaces gradually began to partially replace flame furnaces. Glass melting vessels heated by the surface of a flame have a long history. Although many improvements have been made to the design over the long-term use, there are still some major shortcomings, such as low thermal efficiency, the electric melting furnace has a complex structure, large volume and poor working environment. In the late 1940s, electric foundries began to be used for commercial production. In terms of use, electric melting furnaces have outstanding advantages such as fast melting speed, simple structure, high degree of automation and good working environment. Its basic principle is to use electric energy as a heat source. Resistive heating elements, usually silicon carbide or molybdenum disilicide, are mounted on the side walls of the furnace chamber and provide indirect heating by resistive radiation. Some crucible furnaces for melting special glass use induction heating, which relies on the induction of eddy currents in the furnace and the glass liquid to heat it. The furnace bath directly uses the glass liquid in the furnace as a heating element, so that the glass liquid can be heated to different levels. To heat the glass liquid, electric furnaces are arranged in groups and layers at different locations, and the temperature system is controlled by regulating energy consumption. With this method, the temperature in the space above the surface of the glass liquid is very low (called the cold top of the furnace). Therefore, energy is mainly consumed to melt the glass and conduct heat through the furnace walls. There is no heat loss due to exhaust gases, and there is no environmental pollution due to exhaust emissions. The thermal utilization rate is high, eliminating the need to install a combustion system or a waste heat recovery system. Battery furnaces can be automatically controlled, require less maintenance personnel, and provide a comfortable working environment, but they consume more energy. Suitable for melting fireproof, volatile and dark glass. The large battery of furnaces can produce 150 tons of bottle glass per day.
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