Rotating pipe and manufacturing method thereof

Abstract

The invention relates to a rotary tube and a production method thereof, belonging to the field of special mechanical techniques for producing tubular products. The rotary tube comprises a matrix, wherein in the chemical components of the matrix, the ratio of Al2O3 and SiO2 is over 2.5, and the content of Al2O3 in the chemical components of the matrix is over 60%. Aiming to the shortcomings of the prior art, in the inventive rotary tube, a dense surface layer is sprayed or glazed on the blank surface, the surface layer contains lanthanum and cerium rare earths, and the surface of the rotary tube after high-temperature calcination is dense and has high mechanical strength of internal structure, so as to improve the glass corrosion resistance and service life of the rotary tube.

Description

technical field [0001] The invention belongs to the technical field of machinery specially suitable for manufacturing tubular products, and in particular relates to a rotating tube applied to a glass tube drawing kiln and a manufacturing method thereof. Background technique [0002] Rotary tube is a high-grade refractory material suitable for glass vacuum devices, tube-shaped light source equipment, solar reflective tubes and other glass tube furnaces. , There are very few pinholes and pores. Only in this way can the drawn glass tubes be of good quality. [0003] Since the 1980s, my country began to develop the rotary tube made of burnt gemstone. Due to the defects of the burnt gemstone itself, the service life of the rotary tube is very short, which greatly affects the output and quality of the drawn glass tube. , The structure of the material is not dense, and it is not resistant to the erosion of glass liquid. Moreover, with the technological progress of glass melting fu...

AI Technical Summary

Problems solved by technology

[0005] At the same time, as a refractory material used in high-temperature occasions, the rotating tube itself is particularly important in terms of its strength at high temperatures. Usually, the temperature at which molten glass enters the drawing tube through the feed channel is between 1100°C and 1300°C. The rotating tube must be able to Bear this temperature and have high strength, otherwise it will deform, affect the quality of the drawn tube, and the rotating tube itself will be damaged