Woven bowl body prefabricated body and coating bowl body made of same

Abstract

The invention provides a woven bowl body prefabricated body which is used for the bottom of a crucible, namely the bottom of the crucible. The bowl body prefabricated body is a bowl-shaped net-shapedbody and is formed by weaving one or more carbon fiber ropes, and the net-shaped body of the bowl body prefabricated body is formed by aligning the one or more carbon fiber ropes in the first direction inclining by a first angle relative to a center shaft, and aligning one or more carbon fiber ropes along a second direction inclined at a second angle relative to the central shaft; wherein the second angle is the same as the first angle, and wherein the first direction and the second direction are symmetrical with respect to a central axis; or, the bowl body prefabricated body comprises a plurality of axial strips, wherein one or more carbon fiber ropes are spirally woven around the axial strips. The bowl body is woven in a crossed or spiral mode, weaving is simpler, the bowl bottom is densified, and the supporting strength of the crucible bottom is enhanced.

Description

technical field [0001] The invention relates to the application of a carbon fiber composite material in the manufacturing process of monocrystalline silicon or polycrystalline silicon, in particular to a bowl prefabricated body made of carbon fiber composite material weaving and a coated bowl made of the prefabricated body. Background technique [0002] In the production of crystals, one part is the crucible. The material of the crucible is generally graphite, ceramics, metal, etc., and there are problems such as crucible cracking, erosion and loss of strength. Moreover, as the diameter of the growing crystal becomes thicker, the diameter of the corresponding furnace becomes larger, which requires higher and higher reliability of the thermal field. Due to the limitation of the strength of the crucible bottom of the existing crucible, the larger the diameter, the greater the wall thickness requirement, so the weight is very heavy, and the heat capacity is high, resulting in c...

AI Technical Summary

Problems solved by technology

Due to the limitation of the strength of the crucible bottom of the existing crucible, the larger the diameter, the greater the wall thickness requirement, so the weight is very heavy, and the heat capacity is high, resulting in cumbersome operation, increased energy consumption, and increased cost.

[0003] Therefore, the bottom of the crucible of the prior art also has a place to improve

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