Quartz glass tube is a special industrial glass made of silica, which is a very good basic material. Quartz glass has a series of excellent physical and chemical properties. It is used in electric fire barrels, electric stoves, electric heaters and integration Intelligent thermostatic water heater Inside, it plays the role of heating.

The expansion coefficient of quartz glass heating tube is very small, and it will not burst when it is put into water immediately after heating. Therefore, the heating tube used in heating equipment can fully radiate the heat generated by the middle electric heating wire after it is powered on. There is an opal quartz glass heating tube, which can fully radiate the heat generated by the electric heating wire, Therefore, milky white quartz glass heating tubes are used as electric heating tubes. Because they are milky white, it is difficult to see the electric heating wires inside. In fact, there are electric heating wires. Transparent quartz glass heating tube has the characteristic of being able to pass through ultraviolet rays, so good ultraviolet sterilization lamps are processed with transparent quartz glass heating tube.

The softening point of quartz glass is about 1730 ℃, which can be used for a long time at 1100 ℃, and for a short time at 1450 ℃. Corrosion resistance. Except hydrofluoric acid, quartz glass hardly reacts with other acids. Its acid resistance is 30 times that of ceramics and 150 times that of stainless steel. In particular, its chemical stability at high temperatures is unmatched by any other engineering materials. However, no matter how good it is, there are also disadvantages. Here are three major disadvantages of quartz glass heating tubes:

1. Short life:

After working for a period of time, the electric heating film begins to decay and the power drops significantly. Generally, the non-metallic heater cannot work normally after using for a period of time.

2. Low security:

The glass tube is brittle, non ductile, non pressure resistant and easily broken. If the water pressure is too high, the glass tube will break. The current on the outer wall of the glass tube will be connected with the water in the glass tube, making the water live and endangering life safety.

3. Low thermal efficiency of the whole machine:

Because the heating principle of the quartz glass heating tube is that the electric heating film transfers the heat energy to the water flowing through the tube through the side close to the glass tube after power on, thus heating the water. At the same time, the other side in contact with the air will emit a lot of heat into the air, greatly reducing the thermal efficiency.