A process for directly producing low-hydroxyl quartz tubes
A technology of quartz tube and low hydroxyl, which is applied in the direction of manufacturing tools, glass molding, glass manufacturing equipment, etc., to achieve the effects of reducing production costs, saving electric energy, and stabilizing quality
Active Publication Date: 2017-12-26
JIANGSU XINYIDING QUARTZ TECH CO LTD
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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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Experimental program
Comparison scheme
Effect test
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 invention discloses a process for directly producing low-hydroxyl quartz tubes. Feed into the tungsten crucible; quartz sand is melted at high temperature in the tungsten crucible; 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; the liquid is pulled by a tube pulling machine The produced quartz tube passes through the nitrogen gas supply system and the heating device to reduce the hydroxyl content for the second time to obtain the quartz tube blank; the quartz tube blank enters the cooling device, and the cooling temperature is within 100°C-160°C; the cooled quartz tube Quartz tube products are obtained after the blank is cut. The invention directly produces low-hydroxyl quartz tubes at one time, saves time, saves labor, saves electric energy, has no scratches, no abrasions, no damage to the tubes, no secondary pollution, reduces a large amount of production costs, stable quality, and 100% reach standards and 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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IPC IPC(8): C03B20/00
Inventor 谢大春
Owner JIANGSU XINYIDING QUARTZ TECH CO LTD