Temperature thermal insulation baffle for directional crystallization furnace

Abstract

The invention discloses a temperature thermal insulation baffle for a directional crystallization furnace. The baffle is composed of a hard graphite carbon felt layer (1), a soft graphite carbon feltlayer (2), a graphite paper layer (3) and a connecting member (4); the soft graphite carbon felt layer (2) is connected with the hard graphite carbon felt layer (1) through the connecting member (4),and the graphite paper layer (3) is located on the soft graphite carbon felt layer (2). The baffle has the advantages that the manufacturing is simple, the replacement is convenient and fast, the working efficiency can be greatly improved, the soft graphite carbon felt layer is fixed to the upper portion of the hard graphite felt layer by adopting a carbon fiber bolt, the replacement is convenient; a layer of the graphite paper with the thickness of (2-4) mm is placed on the soft graphite carbon felt layer to help to improve the reflective effect of heat, improve the thermal insulation effectof the thermal insulation baffle, improve the equipment temperature gradient, prevent the damage of the hard graphite carbon felt layer caused by the spattering of metal liquid in the pouring process,and save the cost.

Description

technical field [0001] The invention relates to the technical field of structural design and application of heat insulation baffles, and in particular provides a heat insulation baffle for the temperature of a directional crystallization furnace. Background technique [0002] In the process of preparing single crystal blades, a high temperature gradient is very important for the preparation of single crystal blades, and the design of the heat shield is an important aspect affecting the temperature gradient. The directional crystallization furnaces in advanced countries such as Europe and the United States have a relatively high temperature gradient (generally 50-80K / cm), so the pass rate of single crystal blades is relatively high, and there is still a big gap in this regard in China. [0003] People are eager to obtain a thermal insulation baffle plate with excellent technical effect for the temperature of directional crystallization furnace. Contents of the invention ...

AI Technical Summary

Problems solved by technology

The directional crystallization furnaces in advanced countries such as Europe and the United States have a relatively high temperature gradient (generally 50-80K / cm), so the qualified rate of single crystal blades is relatively high, and there is still a big gap in this regard in China.

Images