Welcome to our websites!

Some Basic Knowledge About Quartz Tube Heater

Quartz tube heating systems are widely used in various far-infrared heating devices. Due to the difficulty of design calculation, the application of quartz tube heating system is limited, the key is to choose the right quartz tube.

Quartz tube is a special industrial technology glass made of silica, which is a very good base material. Quartz glass has a series of excellent physical and chemical properties. It is commonly used in electric fire barrels, electric ovens, electric heaters, and plays a role in heating.

Quartz tube should be used for closed tube diffusion, which is because the quartz tube can withstand high temperatures of about 1250 °C, and it will become very soft and sticky above 1800 °C, and can be made into the desired shape. On the other hand, because the raw material used in quartz tube is special grade crystal stone, high purity, containing few harmful impurities, and ensuring quality for diffusion and alloy preparation, quartz tube is often used for closed pipe diffusion.

Quartz tube is the use of special processing of opalescent quartz glass tube, with resistance material as a heating element, because opalescent quartz glass can absorb almost all of the visible and near-infrared light from the heating wire radiation, and can be converted into far-infrared radiation. However, the industrial infrared heating tube basically eliminated the milky white quartz tube, because its material is relatively brittle, so it cannot form a long milky white heating tube. And the milky white color has a shading effect, which blocks its heat.

The relevant technical performance of quartz tube heaters is as follows:

1. High temperature resistance

The softening point temperature of quartz glass is about 1730 °C, which can be used for a long time at 1100 °C, and the maximum use temperature in a short time can reach 1450 °C

2. Corrosion resistance

In addition to hydrofluoric acid, quartz glass hardly reacts with other acids, and its acid resistance is 30 times that of ceramics and 150 times that of stainless steel, especially at high temperatures, which is unmatched by any other engineering material.

3. Good thermal stability

The thermal expansion coefficient of quartz glass is extremely small, can withstand severe temperature changes, heat the quartz glass to about 1100 °C, put into room temperature water will not explode

4. Good light transmission performance

Quartz glass has good light transmittance performance in the entire spectral band from ultraviolet to infrared, and the visible light transmittance is more than 93%, especially in the ultraviolet spectral region, the maximum transmittance can reach more than 80.

5. Good electrical insulation performance

The resistance value of quartz glass is equivalent to 10,000 times that of ordinary glass, which is a good electrical insulation material and has good electrical properties even at high temperatures 

The plastic extrusion machinery made by Laizhou Kaihui Machinery Co., Ltd. is suitable for different types of electric heater. We can recommend according to customer’s need. Welcome to contact with us to get more information. 


Post time: Mar-01-2023