Fused Quartz Frit / Fritted Disc Welded to the End of Quartz Tube

Fused Quartz Frit / Fritted Disc Welded to the End of Quartz Tube

Quartz frit welded on quartz tube are generally welded in the middle up and down positions of fused quartz tube. This can utilize the shrinkage of the quartz tube wall to fix sintered disc. But if quartz frit needs to be fixed at both ends of the quartz tube, the method of shrinking quartz tube wall cannot be used. Therefore, quartz fritted disc can only be directly welded to the quartz tube end through welding. During the welding process, the welding points must be located at the edges. If the range of torch burning is too large, it will damage the porosity of the quartz sinter. For quartz frits with smaller porosity, incorrect welding methods are more likely to damage the porosity. The biggest cost of customizing a quartz frit tube is often the quartz frit. So the processing must be very careful.

Fused Quartz Glass Features:

Fused quartz glass is a special industrial glass made of silicon dioxide. It is a very good basic material. Quartz glass has a series of excellent physical and chemical properties.

1. High temperature resistance. The softening point of fused quartz glass is about 1730℃ and can be used for long time working under 1100℃~1250℃.  And working at 1450℃ in a short time.

2. Corrosion resistance. In addition to hydrofluoric acid, fused quartz glass is inert to other acids. Its acid resistance is 30 times as ceramic, 150 times as stainless steel. Especially, any other material cannot make a comparison with chemical stability of fused quartz at high temperature

3. The thermal stability is good. Thermal expansion coefficient is extremely small. And it can withstand severe temperature changes such that heating up to 1100℃ and putting it in normal temperature water will not crack.

4. The light transmittance is good. Quartz glass has good transmittance in the whole spectral band from ultraviolet to infrared. The transmittance of the visible light is above 95%. Especially in the ultraviolet spectrum band and the maximum transmittance is over 85%.

5. The electrical insulation performance is good. Resistance value of quartz glass equaling to 10000 times of ordinary glass. It is an excellent electrical insulating material and has good electrical properties even under high temperature.

As a leading China fused quartz glass supplier and manufacturer, we are providing best price as well as quality for all kinds of customized fused quartz products. We are also willing to look for long term partners who are a distributor or wholesaler specialized in fused quartz glass in local.

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Fused quartz glasses have the excellent properties for their following features:

• High working temperature
• Thermal shock resistance
• High electrical insulation
• Optical transparency
• Chemical inertness