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Method for producing quartz casing tube for optical fiber prefabricated stick

A technology of optical fiber preform and quartz sleeve, which is applied in the direction of manufacturing tools, glass molding, glass manufacturing equipment, etc., can solve the problems of high one-time investment and high hydroxyl content, and achieve good melting quality, low hydroxyl content, and temperature resistance good performance

Inactive Publication Date: 2008-12-03
久智光电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The one-time investment of the artificial synthesis method is high, and helium protection is required in the production process, but my country's helium resources are scarce, and the product also has the disadvantage of high hydroxyl content

Method used

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  • Method for producing quartz casing tube for optical fiber prefabricated stick
  • Method for producing quartz casing tube for optical fiber prefabricated stick
  • Method for producing quartz casing tube for optical fiber prefabricated stick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1: Quartz sleeve size: outer diameter 35mm, wall thickness 5.1mm.

[0058] The first step: first select high-purity quartz powder (total impurity content <50ppm), use plasma flame 1 as the heat source, and deposit quartz sand layer by layer on the outer circle of the center base tube 3 in the high-frequency plasma mound machine according to a certain track. Deposit 1.4 kg per hour, directly coat the molten quartz powder 4 on the center base tube 3, and deposit it for 70 hours to form a quartz ingot 5; the second step: cold working with a metal cutting machine and diamond and other abrasive tools to the quartz ingot Grinding and honing the inner hole and outer circle. Grind the outside of the quartz wool ingot 5 into a regular cylindrical shape. Appearance size: outer diameter 139mm, inner diameter 82.12mm, length 1655mm. The third step: cleaning and drying, using trichloroethylene as a degreasing agent for degreasing for 20 minutes, using 1.5% hydrofluoric acid as a...

Embodiment 2

[0059] Embodiment 2: Quartz sleeve size: outer diameter 33mm, wall thickness 5.35mm.

[0060] The first step: first select high-purity quartz powder (total impurity content <50ppm), use plasma flame 1 as the heat source, deposit quartz sand layer by layer on the outer circle of the center base tube 3 in the high-frequency plasma mound machine, 1.5 per hour Kg, the molten quartz powder 4 is directly coated on the center base tube 3, and deposited for 67 hours to form a quartz ingot 5; the second step: cold processing uses a metal cutting machine tool to use diamond and other abrasive tools on the inner and outer holes of the quartz ingot Round for grinding and honing. Grind the exterior of the quartz wool mound 5 into a cylindrical shape with an outer diameter of 138mm, an inner diameter of 81.3mm, and a length of 1600mm. The third step: use trichloroethylene as a degreasing agent for degreasing for 18 minutes, using 1.5% hydrofluoric acid as a cleaning agent for pickling for 10 mi...

Embodiment 3

[0061] Embodiment 3: Quartz sleeve size: outer diameter 35mm, wall thickness 5.1mm.

[0062] The first step: first select high-purity quartz powder (total content of impurities <50ppm), use plasma flame 1 as the heat source, deposit quartz sand layer by layer on the outer circle of the center base tube 3 in the high-frequency plasma mound machine, 1.7 per hour Kg, the molten quartz powder 4 is directly coated on the center base tube 3, and deposited for 65 hours to form the quartz ingot 5; the second step: cold processing uses a metal cutting machine to use diamond and other abrasive tools on the inner and outer holes of the quartz ingot Round for grinding and honing. Grind the exterior of the quartz wool mound into a cylindrical shape with an outer diameter of 139mm, an inner diameter of 80.9mm, and a length of 1635mm. The third step: using trichloroethylene as a degreasing agent for degreasing for 17 minutes, using 1.5% hydrofluoric acid as a cleaning agent for pickling for 10 m...

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Abstract

The invention discloses a method for producing a quartz sleeve for a fiber precast rod. The method comprises the following steps of: 1 weight manufacturing; 2 mechanical cold machining; 3 cleaning and drying; 4 tube drawing in a medium-frequency contactless mode; and 5 checkup and packaging, wherein, in step one, a weight is manufactured by adopting an external sedimentation mode of plasma horizontal type solid phase; in step two, an inner hole and an outer circle of the quartz weight are subject to the machining of grinding and honing by adopting a metal cutting machine tool matched with diamond and other grinding tools; in step three, the quartz weight is subject to degreasing, acidification, washing by pure water, drying and packaging for standby; in step four, the net quartz weight is hung in a medium-frequency furnace, heated up to a certain temperature, softened and deformed and drawn into the needed quartz sleeve by a tube drawing machine; and in step five, the quartz sleeve is checked and packaged. The method adopts plasma flame for heating and fully melts down raw materials in order that no bubble is in the gross quartz weight and can not introduce external impurities in order that melted quartz powder has high purity; the melted quartz powder has a characteristic of low hydroxyl group; secondary molding adopts medium frequency for heating and has no hydrogen and oxygen sources; and the final quartz sleeve has low hydroxyl content and good temperature resistance.

Description

Technical field [0001] The invention relates to a production method of quartz products, in particular to a production method of a quartz sleeve for optical fiber preform rods. Background technique [0002] At present, there are not many companies producing quartz sleeves for optical fiber preforms, mainly Heraeus in Germany. Their production methods mainly use synthetic quartz powder using continuous melting method, SiCl4+H2+O2→SiCl4+H2O→4HCl+ SiO2. The artificial synthesis method has a high one-time investment and requires helium protection during the production process. However, my country's helium resources are relatively small, and the product also has the disadvantage of high hydroxyl content. Summary of the invention [0003] In order to overcome the defects in the prior art, the present invention provides a method for producing a quartz sleeve for an optical fiber preform. This method uniformly melts the quartz powder under the action of a high-frequency electric field, a...

Claims

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Application Information

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IPC IPC(8): C03B20/00C03B37/012
CPCC03B2201/03C03B2201/04
Inventor 张锦杨兴华张晓风李文彦
Owner 久智光电子材料科技有限公司
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