Quartz crucible manufacturing method and forming device

Abstract

The invention provides a quartz crucible manufacturing method and a forming device, relates to the technical field of solar photovoltaics, and provides a crucible mold comprising a top barrel and a crucible bottom, in the forming process of a crucible blank, a first included angle is formed between the crucible mold and the horizontal plane, and when the crucible mold rotates at a first rotating speed, the raw materials are enabled to form a first blank on the inner wall o fthe top barrel, and when a second included angle is formed between the crucible mold and the horizontal plane and the crucible mold rotates at a second rotating speed, the raw materials are enabled to form a second blank on the inner wall of the bottom of the mold, and the quartz crucible is manufactured through the crucible blank composed of the first blank and the second blank, the raw materials can be prevented from sliding down to the center of the bottom of the crucible mold under the action of gravity, the forming rate of the crucible blank is increased, and then the manufacturing efficiency of the quartz crucible is improved.

Description

technical field [0001] The invention relates to the field of solar photovoltaic technology, in particular to a method for manufacturing a quartz crucible and a molding device. Background technique [0002] In the process of producing monocrystalline silicon by the Czochralski method, polycrystalline silicon raw materials need to be placed in a quartz crucible, heated to form a molten polycrystalline silicon solution, and single crystal silicon rods are obtained by pulling crystals from the molten polycrystalline silicon solution. Quartz crucible, as the main container in the manufacturing process of monocrystalline silicon, plays a vital role in the production process of monocrystalline silicon. [0003] In the prior art, the arc method is mainly used to produce quartz crucibles. First, raw materials (such as quartz sand) are poured into an inclined and rotating mold, and molded parts are used to form a crucible body on the inner wall of the mold through the rotation of the ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for manufacturing a quartz crucible and a molding device, aiming at solving the problem that during the manufacturing process of a quartz crucible, raw materials tend to slide toward the center of the bottom of the crucible mold, resulting in a low molding rate of the crucible body and reducing the manufacturing efficiency of the quartz crucible. The problem

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