Quartz Glass Valve Components Custom Fabrication

Quartz Glass Valve Components

The processing of quartz glass valve components belongs to the thermal processing technology in quartz glass field. The thermal and cold processing of quartz glass are often combined. For example, the tube end flange in the picture is machined by CNC or other methods. Then connect to the tube end through welding process. The proportion of thermal processing quartz glass far exceeds that of cold processing. Except for common quartz plates / discs and quartz parts, they belong to the scope of cold processing. Most of the other quartz products contain thermal processing.

The main characteristics of quartz glass

1. Heat resistance

The softening point of quartz glass is 1730 ℃. It can be used for a long time below 1100 ℃, and the temperature for short time use is up to 1450 ℃.

2. Light transmission

Quartz glass has good light transmittance in the entire optical spectrum 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%.

3. Electrical insulation

The electrical resistance of quartz glass is equivalent to 10,000 times that of ordinary glass.

4. Chemical stability

Quartz glass almost don’t react chemically with other acid-base substances except hydrofluoric acid.

5. Thermal stability

Quartz glass has low expansion coefficient, and it can withstand drastic temperature changes.

6. Hardness characteristics

With the hardness of Mohs level 7, the mechanical properties of quartz glass are better than hard glass and ceramics, and the strength of quartz glass improves with the increase of temperature, reaching its maximum when approaching the annealing temperature.