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Technology of directly producing low-hydroxyl quartz tube

A quartz tube, low hydroxyl technology, applied in the direction of manufacturing tools, glass molding, glass manufacturing equipment, etc., to achieve the effects of saving electricity, stable quality, and reducing production costs

Active Publication Date: 2016-06-15
JIANGSU XINYIDING QUARTZ TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of reasonable structure, which can directly produce low-hydroxyl quartz tube at one time under the premise of ensuring product quality.

Method used

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Embodiment Construction

[0015] The specific implementation method of the one-time "invention of a process for directly producing low-hydroxyl quartz tubes" of the patent of the present invention is:

[0016] (1) Add 50-160 mesh quartz sand into the special corrosion-resistant and wear-resistant stainless steel automatic feeding device, the original hydroxyl group is at 118ppm, and feed hydrogen automatically;

[0017] (2) Simultaneously and equal amount of feeding into the tungsten crucible through the 4 feeding tubes set on the tungsten crucible furnace cover;

[0018] (3) Quartz sand is melted at a high temperature through a heating system in a tungsten crucible, and the temperature is controlled at 2000±20°C;

[0019] (4) The liquid melted at high temperature flows out of the furnace mouth of the tungsten crucible vertically along the shaper set at the end of the central mandrel in the tungsten crucible. A nitrogen supply system is installed in the shaper, and the nitrogen flow rate is 0.08m 3 / h...

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Abstract

The present invention discloses a technology of directly producing low-hydroxyl quartz tube. Materials are added into a tungsten crucible. Quartz sand is subjected to a high temperature melting in the tungsten crucible. The high-temperature melted liquid flows out of the furnace mouth of the tungsten crucible vertically along a former arranged at the end of a central core rod within the tungsten crucible. The liquid passes through a drawing quartz tube by a drawing machine and is subjected to a second hydroxyl group content lowering via a nitrogen gas supply system and a heating device, and then a quartz tube semi-product is obtained. The quartz tube semi-product enters into a cooling device at a cooling temperature of 100-160 DEG C. The cooled quartz tube semi-product is cut to obtain a quartz tube product. The one-time directly produced low-hydroxyl quartz tube technology is time-saving, labor saving, and energy saving. The produced low-hydroxyl quartz tube is free of scratches and rubs, does not damage tube materials, pipe, is free of secondary pollution, reduces a lot of production costs, is stable in quality, and can absolutely reach standards and meet customer requirements.

Description

technical field [0001] The patent of the present invention relates to a process invention for directly producing low-hydroxyl quartz tubes, especially the direct production of low-hydroxyl quartz tubes by using a continuous melting furnace. Background technique [0002] The current production process of using the traditional continuous furnace to produce dehydroxylated (low hydroxyl) quartz tubes is: 1. Put the quartz sand with low original hydroxyl group into the hopper; 2. Heat the quartz sand in the high temperature tungsten Melting in the crucible; 3. The quartz tube is drawn into shape by the former and the material table; 4. The specification of the tube is controlled by the laser control system; Carry out manual cutting; 7. Quality inspectors conduct quality inspection, packaging, measurement, and warehousing; 8. Dehydration workers go to the pipe warehouse to pick up the tubes and put the quartz tubes into the dehydration furnace (dehydration furnaces are divided int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B20/00
Inventor 谢大春
Owner JIANGSU XINYIDING QUARTZ TECH CO LTD
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