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A kind of technical method of repairing arc quartz crucible

The technology of a quartz crucible and a process method is applied in the direction of chemical instruments and methods, manufacturing tools, glass forming, etc., which can solve problems such as poor penetration and connection effects, hidden cracks falling off, and poor melting effects, so as to maintain heat transfer efficiency, Avoid safety hazards and reduce energy consumption

Active Publication Date: 2020-07-31
曲靖晶澳光伏科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems of poor melting effect, poor permeation and connection effect, and prone to hidden cracks falling off in the prior art, and provides a new repairing process method, which adopts layer-by-layer superposition in the repairing process. The process method is adopted, and the temperature control method of the internal and external temperature difference is adopted, so that the repair is in the fusion of the welding rod in the molten state, and the filling effect is good.

Method used

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  • A kind of technical method of repairing arc quartz crucible
  • A kind of technical method of repairing arc quartz crucible

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Embodiment Construction

[0026] The following is attached Figure 1-2 To further explain the present invention in detail:

[0027] ①Prepare the crucible: transfer the graphite crucible and the quartz crucible with damaged points to the workbench. During and after the transfer, always keep the crucible open upward.

[0028] ②Grinding: Use a grinding head to polish the defective spots in the inner cavity of the quartz crucible from the inside to the outside, and stop grinding until the damaged spots disappear and form pits. The pits are round pits or square pits. Or conical pits.

[0029] ③Clean the crucible: clean the graphite crucible and the quartz crucible at the same time, and dry after cleaning. When cleaning the quartz, use pure water to remove the dust left by the grinding in the quartz crucible. Use absorbent cotton and pure water to clean the inner and outer walls of the quartz crucible several times. Scrub, the outer wall of the quartz crucible is washed with a brush and pure water several times, ...

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Abstract

The invention discloses a novel process method for repairing an arc quartz crucible. The method comprises the following steps of 1, transferring a crucible; 2, performing grinding; 3, cleaning the crucible; 4, performing crucible local inside and outside preheating; 5, repairing concave pits; 6, performing post treatment. During the preheating, the inside and outside temperature difference type preheating is used; during the concave pit repairing, the used bending process is a multilayer filling process; the connection performance is good.

Description

Technical field [0001] The invention belongs to the field of silicon crystal preparation devices, and particularly relates to a process method dedicated to repairing quartz crucibles. Background technique [0002] In the production of Czochralski silicon single crystals, quartz crucibles are used as consumables that directly contact the raw materials. Its cleanliness, hardness, bubble layer thickness and other standards are very strict, so as to ensure normal crystal pulling under long-term high temperature conditions. , Without the occurrence of seepage and leakage. The arc method quartz crucible will inevitably produce bubbles and black spots during the production process. The bubbles in the crucible affect the strength of the crucible. When the bubbles are in the crystal pulling environment (negative pressure and high temperature environment), it is very likely Bursts and bubble bursts will cause silicon liquid leakage. The silicon liquid leakage will lead to adhesion and scr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B20/00C30B15/10
CPCC03B20/00C30B15/10
Inventor 刘军波何京辉范玉华李卫涛范玉东韩佳焦鹏李运波刘康
Owner 曲靖晶澳光伏科技有限公司
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