Precise forming technique for continuous glass fibre

Abstract

The invention discloses a precision forming technique of continuous glass fiber; the chosen components of the glass are as follows: 53.5 to 54 percent of SiO2, 14.2 to 14.8 percent of Al2O3, 6.5 to 6.8 percent of B2O3, 22.5 to 23 percent of CaO, MgO being less than 0.5percent, 0.5 to 0.8 percent of R2O (Na2O, K2O), Fe2O3 being less than 0.4 percent, TiO2 being less than 0.5 percent, 0.3 to 0.5 percent of F; the raw materials of the glass are melt in a melting department according to the material percentage; the glass hotspot temperature in the melting department is controlled within 1350 to 1450 DEG C; the glass temperature at the inlet of a main pathway is controlled within 1370 to 1400 DEG C; the glass temperature at the outlet of the main pathway is controlled within 1360 to 1370 DEG C;, the glass temperature on an operation pathway is controlled within 1260 to 1330 DEG C, and the glass liquid height in the operation pathway is controlled within 250mm to 300mm; the upper mouth of a plate-inserted cooler is arranged at the place that is 2 to 3.5mm from the outlet of a forming tip of a leakage plate; the inlet water temperature of the plate-inserted cooler is controlled within 20 + / - 2 DEG C, and outlet water temperature is controlled within 25 + / - 2 DEG C; the environment flow of the wire drawing process is controlled at 2mm / H2O of negative micro-pressure with the temperature controlled within 20 to 25 DEG C; by adopting the invention, the forming of the continuous glass is more accurate, and end breaking, flying wire and monofilament diameter are evidently reduced; the shortage of uneven density is overcome.

Description

technical field [0001] The invention relates to the forming technology of continuous glass fiber, in particular to the technology of precise forming of continuous glass fiber. Background technique [0002] Continuous glass fiber has excellent characteristics such as high temperature resistance, corrosion resistance, high strength, light weight, good electrical insulation performance, low moisture absorption, and small elongation. It is an irreplaceable basic material for the development of modern industry, agriculture, and international cutting-edge science. [0003] There are many kinds of continuous glass fibers, and the glass components mainly include E glass fiber (alkali-free glass fiber), C glass fiber (medium-alkali glass fiber), A glass fiber (high-alkali glass fiber), M glass fiber (high modulus glass fiber) ), R glass fiber (high silica glass fiber) and AR glass fiber (alkali-resistant glass fiber), etc. The continuous glass fiber forming process provided by the i...

AI Technical Summary

Problems solved by technology

[0005] However, the control of the above factors in the prior art is not strict enough, so that defects such as broken ends, flying wires, and uneven diameter and linear density of single wires often occur during the wire drawing process.

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