Preparation method of low-hydroxyl large-diameter large-length quartz piece

A large-diameter, quartz-mass technology, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve the problem of unable to meet product requirements in the optical fiber field, difficult to solve the load-bearing problem of large-diameter and long quartz tube mass, unable to prepare quartz In order to achieve the effect of low hydroxyl content, high strength and high softening point

Inactive Publication Date: 2013-07-31
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 traditional plasma horizontal external solid-phase deposition technology relies on the chucks at both ends of the lathe to support the quartz ingot body, so it is difficult to solve the load-bearing problem of the central base tube for large diameter and long quartz tube ingots, and it is almost impossible to prepare diameters greater than 200mm and length Quartz ingots over 1800mm cannot meet the product requirements of the optical fiber field to keep pace with the times

Method used

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  • Preparation method of low-hydroxyl large-diameter large-length quartz piece
  • Preparation method of low-hydroxyl large-diameter large-length quartz piece
  • Preparation method of low-hydroxyl large-diameter large-length quartz piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Example 1 (eg image 3 ):

[0071] Dimensions of low hydroxyl, large diameter and long length optical fiber preform quartz tube:

[0072] The outer diameter is 200mm, the inner diameter is 43mm, and the length is 1800mm.

[0073] The first step: making mounds uses the flame 2 generated by the plasma torch 1 as the heat source for melting quartz glass; Spray on the central base tube (or base rod) 3 and continuously melt into a glass state; the molten quartz glass reciprocates and rotates up and down with the center base tube (or base rod) 3 (at this time, the plasma torch 1 maintains motionless state), finally forming a hollow or solid columnar solid glass mound 7.

[0074] The plasma torch 1 is placed on the side of the central base tube (or base rod) 3 at an angle of 90° to the axis, and the central base tube (or base rod) 3 makes a vertical reciprocating motion along the axis direction, accompanied by a rotational motion ( At this time, the plasma torch 1 remains ...

Embodiment 2

[0078] Example 2 (eg Figure 4 )

[0079] Dimensions of low hydroxyl, large diameter and long length optical fiber preform quartz tube:

[0080] The outer diameter is 220mm, the inner diameter is 43mm, and the length is 2000mm.

[0081] The first step: making mounds uses the flame 2 generated by the plasma torch 1 as the heat source for melting quartz glass; Spray on the central base tube (or base rod) 3 and continuously melt into a glass state; the molten quartz glass follows the rotation of the central base tube (or base rod) 3 and the up and down reciprocating motion of the plasma torch 1 (at this time, The central base tube (or base rod) 3 only maintains rotational motion without axial translational motion), and finally forms a hollow or solid columnar solid glass mound 7 .

[0082] The plasma torch 1 is placed on the side of the central base tube (or base rod) 3 at an angle of 90° to the axis. At this time, the central base tube (or base rod) 3 only keeps rotating, and...

Embodiment 3

[0086] Example 3 (as Figure 5 ):

[0087] Dimensions of low hydroxyl, large diameter and long length optical fiber preform quartz tube:

[0088] The outer diameter is 230mm, the inner diameter is 43mm, and the length is 2300mm.

[0089] The first step: making mounds uses the flame 2 generated by the plasma torch 1 (two plasma torches) as the heat source for melting quartz glass; Under the heating of the plasma flame 2, it sprays on the central base tube (or base rod) 3, and continuously melts into a glass state; the molten quartz glass moves up and down with the central base tube (or base rod) 3. , the plasma torch 1 remains motionless), and finally a hollow or solid columnar solid glass ingot 7 is formed.

[0090] The plasma torch 1 (two plasma torches) is placed on the side of the central base tube (or base rod) 3 at an angle of 90° to the axis, and the central base tube (or base rod) 3 reciprocates vertically along the axis Movement is accompanied by rotation (at this ...

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Abstract

The invention relates to a preparation method of a quartz product, and especially relates to a preparation method of a low-hydroxyl large-diameter large-length quartz piece. According to the invention, the piece is prepared with a plasma vertical solid-phase external deposition method. One or a plurality of plasma torches can be configured. During a smelting process, the plasma torch is maintained unmoved, or is subjected to translational motions up and down on a vertical axis. The smelting temperature which is quartz piece surface temperature is 1800-2500 DEG C. Quartz sand is delivered in from a blanking pipe at a plasma torch upper port or by plasma device central airflow. A central base pipe or base rod is fixed on a glass machine tool, and simultaneously rotates when performing translational movements up or down on the vertical axis. Along with the relative movements of the plasma flame and the central base pipe or base rod, the quartz sand is deposed and molten layer by layer, such that a hollow quartz blank piece or a solid quartz blank piece is formed. With the plasma vertical solid-phase external deposition novel method, the prepared quartz piece has the characteristics high purity, low hydroxyl content, high softening point, high strength, high temperature resistance, and uniform diameter.

Description

technical field [0001] The invention relates to a method for preparing quartz products, in particular to a method for preparing a low-hydroxyl large-diameter and long-length quartz ingot, and also a method for preparing a large cylinder for an optical fiber preform rod. Background technique [0002] Inserting a core rod into a large-size sleeve to form an optical fiber preform (RIC)—as an optical fiber preform production technology, has occupied an extremely important position in the global optical fiber production field for many years. Plasma horizontal solid-phase external deposition (PSOD) is the main technology for producing large-size bushings, which has the characteristics of excellent quality, simple process, and cost advantages. Such as figure 1 As shown, the plasma horizontal external solid phase deposition technology uses a high-frequency electromagnetic field to ionize the working gas (compressed air, argon, etc.) The hollow quartz wool mound is directly formed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B20/00C03B37/018
CPCC03B2207/52C03B19/1423
Inventor 李文彦谷巨明孙丽丽张锦王春玲刘晓光秦卫光刘旭阳
Owner 久智光电子材料科技有限公司
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