Continuous melting furnace for producing quartz glass bar and manufacture technology

Abstract

The invention discloses a continuous melting furnace for producing a quartz glass bar and a manufacture technology. The continuous melting furnace comprises a furnace body and a furnace cover which are matched to each other, wherein a tungsten crucible is arranged in the furnace body; a heating net and heat insulating sand are arranged outside the tungsten crucible, and the heating net is connected with an electrode; high-temperature bricks, a water sleeve and a dust removing device are arranged at a port of the furnace; and the upper end of the tungsten crucible is communicated with a feeding device and a heat insulating device, and the lower end of the tungsten crucible is connected with a forming device. According to the continuous melting furnace disclosed by the invention, a mandril device in the tungsten crucible is removed; the forming device at the lower part of the tungsten crucible is used or stretching to form under a certain temperature; because the mandril device is removed, no bubble, air line and black core are generated; and moreover, the manufactured quartz glass bar has large diameter, and can be widely applied to industries such as a semiconductor industry, a solar energy industry and an optical fiber industry.

Description

technical field [0001] The invention relates to a device and a manufacturing process for continuously producing quartz rods. Background technique [0002] The existing continuous melting furnace cannot produce high-end quartz tube rods. The method of producing quartz glass rods has the following defects: a core rod is installed in the continuous melting furnace, and the feeding is adjusted by adjusting the position of the core rod device, and the vacuum is drawn through the core rod negative pressure. The method makes the pipe into a rod. Due to the backward technology, only small specifications can be produced, and the product has air bubbles. Because of the core rod device, the rod produced has a black core, which cannot produce high-quality products, which seriously limits its application range. Contents of the invention [0003] In view of this, the technical problem to be solved by the present invention is to provide a continuous melting furnace for producing quartz ...

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Problems solved by technology

[0002] The existing continuous melting furnace cannot produce high-end quartz tube rods. The method of producing quartz glass rods has the following defects: a core rod is installed in the continuous melting furnace, and the feeding is adjusted by adjusting the position of the core rod device, and the vacuum is drawn through the core rod negative pressure. The method makes the pipe into a rod. Due to the backward technology, only small specifications can be produced, and the product has air bubbles. Because of the core rod device, the rod produced has a black core, which cannot produce high-quality products, which seriously limits its Application range

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