Temperature and humidity controllable annealing furnace

Abstract

The invention relates to a temperature and humidity controllable annealing furnace, belonging to the technical field of precise annealing of glass materials and the like. According to the annealing furnace, an in-furnace temperature ascending and descending curves and uniformity are controlled by virtue of uniform heating and gas cycle through an internal heater and a flow guiding tank, meanwhile,a design that externally circulating gas is combined with fresh air to enter dehydration-preheating system is adopted, and the in-furnace humidity is maintained within a set range through in-furnacegas replacement. By controlling air inflow, the in-furnace pressure is in a micro-positive pressure state, and water steam at a furnace door cannot infiltrate into an in-furnace high temperature environment, so that the in-furnace humidity can be well maintained, and the independent control of the temperature and humidity of in-furnace gas in the annealing process is realized. The temperature andhumidity controllable annealing furnace can meet the requirements on the control of the temperature and humidity of special materials in the annealing process.

Description

technical field [0001] The invention relates to an annealing furnace with controllable temperature and humidity, belonging to the technical field of precision annealing of glass materials and the like. Background technique [0002] The glass components required for high-performance laser systems usually have large dimensions, and at the same time have very strict requirements on the stress and deformation of the glass material. Therefore, in the preparation process of related glass materials, it is necessary to perform an annealing process on large-size glass materials to gradually release the internal stress of the glass and improve the mechanical and optical properties. In the fine annealing process of glass materials, there are high requirements on the temperature rise and fall curves in the furnace and temperature uniformity. Because of the strong water absorption of high-performance laser neodymium glass, it is also necessary to realize the control of the temperature in...

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Problems solved by technology

[0003] The optimal temperature for annealing neodymium glass is around 650°C. At present, the annealing equipment for this type of glass material on the market mainly adopts electric annealing furnace, because of its good temperature controllability, good temperature uniformity and no pollution during the annealing process. However, none of the products currently on the market can effectively control the humidity in the furnace during the annealing process.

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