Application Field

Quartz Furnaces

Field Introduction

Quartz glass features a single component of silicon dioxide. This kind of glass has a Mohs hardness up to level seven, with good high-temperature resistance, a low expansion coefficient, and good thermal shock resistance, chemical stability and electrical insulation properties. It is also able to transmit ultraviolet and infrared rays. The material is widely used in the production of electric light sources, semiconductors, optical fiber communications, lasers, optical coatings, laboratory instruments, medical equipment and high temperature and corrosion resistant chemical instruments, chemical industry, electronics, metallurgy, building materials and national defense industries.
The current generation of quartz drawn tube furnaces are known as continuous melting furnaces; these offer obvious advantages for continuous production compared with older models. High-purity quartz sand is continuously fed from the upper end of the furnace into the tungsten tube, while the tungsten rod is heated to above 2,100°C to provide suitable resistance. The high-purity quartz sand gradually melts into a quartz solution, flows out from the mouth of the material table from top to bottom, where it is cooled and formed instantly. The material table and the former combine to draw quartz tubes of different diameters and thicknesses, as well as continuous quartz melting products such as quartz plates and quartz rods.



■    One of the first enterprises in China engaged in the research and production of tungsten and molybdenum materials, inheriting more than 70 years' experience in the research and production of tungsten and molybdenum materials from CISRI.

■    In the 1990s, we began to participate in the localization process of quartz drawn tubes, breaking the monopoly of imports, and witnessed the innovation of tungsten crucibles in the continuous quartz melting industry.

■     We can customize products based on customer needs; we also boast sufficient production capacity to protect the development of quartz drawn tube enterprises.

■    Advanced tungsten-molybdenum densification technology maximizes the corrosion and deformation resistance of the former, reducing the frequency of furnace shutdowns and maintenance, and eliminating blistering on quartz drawn tubes.

■    Tailor tools for producing high-quality quartz for the entire continuous quartz melting industry, have production experience in various types of continuous quartz melting furnaces, and provide a full set of tungsten and molybdenum material accessories required for continuous quartz melting furnaces.

■    High-purity tungsten and molybdenum will not cause any pollution to the quartz, while the service life of a single set of 350-type tungsten tubes can be as long as 17 years, setting a new benchmark for the industry.

■     Leading technology, leading the global industry. The company boasts a wealth of experience in large-scale tungsten tube production, providing customers with ultra-large Φ1000 × 1300 mm single tungsten tubes, meeting industry demands for solar PVs, semiconductors, and fiber optic communication.。