Bushing plate for drawing low-dielectric high-temperature glass fiber

Abstract

The invention provides a bushing plate for low-dielectric high-temperature glass fiber drawing, which comprises a main body, the main body comprises two oppositely arranged side walls, two oppositely arranged plugs and a bottom plate, and the bottom plate is fixedly connected with each side wall and each plug to form a groove-shaped accommodating space; electrodes are respectively arranged on the outer sides of the two plugs; a plurality of separated wire drawing areas are arranged on the bottom plate, discharge spouts which are uniformly distributed in a rectangular array are arranged in the wire drawing areas, and the discharge spouts are formed by stretching the inner walls of through holes which are correspondingly distributed in the bottom plate to one side far away from the groove-shaped accommodating space; the distance between every two adjacent wire drawing areas is 11.5-16 mm, the distance between every two adjacent rows or columns of discharge spouts is 6-7 mm, and the diameter of each discharge spout is 1.15-1.55 mm. The discharge spout distance, the discharge spout inner diameter, the electrode distance, the electrode thickness and the like are redesigned, peripheral discharge spout distribution is optimized, effective control over the temperature of the bushing plate is improved, and the quality abnormal problems that due to the fact that the temperature is uneven, deviation exists in tension, and filament flying, hairiness and the like are likely to be caused are solved.

Description

technical field [0001] The invention relates to the technical field of glass fiber processing, in particular to a bushing plate for low-dielectric high-temperature glass fiber drawing. Background technique [0002] Low-dielectric high-temperature glass drawing process generally uses high-boron glass as the raw material for drawing, and finally obtains glass fiber products. The bushing plate is one of the main devices in glass fiber production, and it is a trough container. During the drawing process, the molten glass flows into the bushing plate, and is adjusted to a suitable temperature in the bushing plate, then flows out through the nozzle on the bottom plate, and is stretched into continuous glass fibers by the high-speed rotating wire drawing machine at the exit. The bushing is generally composed of platinum-rhodium alloy, which generally contains 90% Pt and 10% Rh at present, and is strengthened by zirconium dispersion. [0003] In actual production, the temperature ...

AI Technical Summary

Problems solved by technology

[0005] 1. The volatility of boron in raw materials leads to the reduction of the service life of the bushing;

[0006] 2. The existing bushings cannot meet the high temperature requirements of 1380±20°C, and the service life of the bushings will be reduced at this temperature;

[0007] 3. The bushing plate of the existing low-dielectric high-temperature glass drawing equipment cannot meet the quality requirements of existing products

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