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Method of forming a quartz crucible

A technology of quartz crucible and gypsum mold, which is applied in glass forming, glass manufacturing equipment, manufacturing tools, etc., can solve the problems such as easy occurrence of defects in the mouth of quartz crucible

Active Publication Date: 2016-07-06
徐州协鑫太阳能材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a method for forming a quartz crucible that solves the problem that the upper port of the quartz crucible is prone to defects during demoulding, in view of the problem that the upper port of the quartz crucible is prone to defects during demoulding.

Method used

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  • Method of forming a quartz crucible
  • Method of forming a quartz crucible

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Grooves are respectively arranged at the joints of two adjacent peripheral walls, and there are 8 grooves in total on the peripheral walls. The cross-sections of two adjacent grooves can be combined into a semi-ellipse, the semi-elliptical major axis is 13 mm, and the minor semi-axis is 8 mm.

[0052] The gypsum mold for preparing the quartz crucible is replenished by a water replenishing machine until the moisture mass in the mold core accounts for 15% of the total mass of the mold core, the moisture mass in the mold cover accounts for 8% of the total mass of the mold cover, and the moisture in the surrounding walls The mass accounts for 8% of the total mass of the surrounding perimeter walls.

[0053] Then use the atomized water gun to replenish water to the R corners of the four mold cores respectively until the water mass in the R corners of each mold core accounts for 18% of the total mass of the R corners of each mold core. The four R corners on the top are respe...

Embodiment 2

[0059] Grooves are respectively arranged at the joints of two adjacent peripheral walls, and there are 8 grooves in total on the peripheral walls. The cross-sections of two adjacent grooves can be matched to form a semi-ellipse, the semi-elliptical major axis is 15 mm, and the minor semi-axis is 10 mm.

[0060] The gypsum mold for preparing the quartz crucible is replenished by a water replenishing machine, until the moisture mass in the mold core accounts for 18% of the total mass of the mold core, the moisture mass in the mold cover accounts for 10% of the total mass of the mold cover, and the moisture in the surrounding walls The mass accounts for 10% of the total mass of the surrounding perimeter walls.

[0061] Then use the atomized water gun to replenish water to the R corners of the four mold cores respectively until the water mass in the R corners of each mold core accounts for 20% of the total mass of the R corners of each mold core. The four R corners on the top are...

Embodiment 3

[0067] Grooves are respectively arranged at the joints of two adjacent peripheral walls, and there are 8 grooves in total on the peripheral walls. The cross-sections of two adjacent grooves can be combined into a semi-ellipse, the semi-elliptical major axis is 17 mm, and the minor semi-axis is 12 mm.

[0068] The gypsum mold for preparing the quartz crucible is replenished by a water replenishing machine until the moisture mass in the mold core accounts for 20% of the total mass of the mold core, the moisture mass in the mold cover accounts for 12% of the total mass of the mold cover, and the moisture in the surrounding walls The mass accounts for 12% of the total mass of the surrounding perimeter walls.

[0069] Then use the atomized water gun to replenish water to the R corners of the four mold cores respectively until the water mass in the R corners of each mold core accounts for 22% of the total mass of the R corners of each mold core. The 4 R corners on the top are respe...

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Abstract

The invention discloses a method for forming a quartz crucible. The method comprises the following steps: supplementing water into a mold core of a plaster mold for preparing the quartz crucible till the mass of the water in the mold core accounts for 15%-20% of the total mass of the mold core, supplementing the water into a mold cover of the plaster mold till the mass of the water in the mold cover accounts for 8%-12% of the total mass of the mold core, supplementing the water into peripheral sidewalls of the plaster mold till the mass of the water in the peripheral side walls accounts for 8%-12% of the total mass of the peripheral side walls; supplementing water into an R angle of the mold core till the mass of the water in the R angle of the mold core accounts for 18%-22% of the total mass of the R angle of the mold core; spraying a mold release agent on the inner surface of the plaster mold for forming the quartz crucible; and assembling the plaster mold and forming the quartz crucible by slip casting in virtue of the plaster mold. According to the method, the uniform water in the plaster mold can be kept, the production of stress in the forming process of the quartz crucible is effectively avoided, and the production of defects on the quartz crucible can be further effectively avoided when the plaster mold is released.

Description

technical field [0001] The invention relates to the field of quartz crucible production, in particular to a method for forming a quartz crucible. Background technique [0002] Generally, plaster molds are used in the production process of quartz crucibles. The water absorption of gypsum can be used to quickly remove the water in the slurry, and then the crucible can be shaped. The plaster mold includes the mold cover, the surrounding walls and the mold core. When grouting molding is used for crucible molding, the mold cover, the surrounding walls and the mold core can form a crucible forming area. The quartz slurry first enters the crucible forming area through the sprue on the mold cover, and the plaster mold begins to absorb water to make the quartz The slurry forms a thin layer. With the increase of quartz slurry, the thin layer gradually thickens, and after a period of blank molding, a crucible blank is formed. When the quartz crucible reaches the demoulding condition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B20/00B28B1/26
CPCC03B19/02C03B20/00C03B40/02
Inventor 邓亮亮康平张凤何钊煊
Owner 徐州协鑫太阳能材料有限公司
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