Under high temperature applications, the thermal expansion coefficient of quartz glass is extremely low, usually between 0.5 × 10 ⁻⁶/℃ and 0.55 × 10 ⁻⁶/℃. This characteristic enables it to maintain excellent dimensional stability and almost no deformation even when subjected to drastic temperature changes. As a professional quartz product customization manufacturer, Luweiya Quartz is committed to providing you with high-performance quartz components that meet harsh working conditions and meet the application needs of various extreme environments.

We are well aware that in environments with high temperatures or sudden temperature differences, the thermal expansion and contraction of materials are often the core factors leading to equipment failure. Our product is designed to solve this problem: with its ultra-low coefficient of thermal expansion, quartz products can effectively resist thermal stress and avoid cracking or deformation during rapid heating or cooling processes. Whether it's semiconductor manufacturing, precision optics, or high-temperature reactors, our customized quartz components ensure dimensional accuracy and safe operation under extreme conditions, significantly extending service life and reducing maintenance costs.

Objective analysis of thermal expansion coefficient of quartz glass

The core reason why quartz glass (fused silica) has become the preferred material in the field of high temperature and precision lies in its unique physical properties:

Extremely low coefficient of thermal expansion (CTE): In the range of room temperature to high temperature, its CTE is about 0.5 × 10 ⁻⁶/℃ to 0.55 × 10 ⁻⁶/℃. In contrast, ordinary soda lime glass has a temperature of about 9 × 10 ⁻⁶/℃, while aluminum has a temperature as high as 23 × 10 ⁻⁶/℃. This means that under the same temperature difference, the size change of quartz glass is only 1/20 of ordinary glass and 1/40 of metal.

Excellent thermal shock resistance: Due to its extremely low coefficient of expansion, quartz glass generates minimal thermal stress internally when heated or cooled, and can withstand sudden temperature changes without breaking.

Dimensional stability: Quartz glass can maintain excellent geometric dimensional stability even at sustained high temperatures up to 1200 ℃, which is crucial for precision instruments and semiconductor wafer processing.

Customized Expansion: For more extreme applications, we also provide customized services for titanium doped quartz glass. By doping titanium dioxide, the thermal expansion coefficient can be further reduced to near zero, meeting the nanometer level precision requirements of extreme ultraviolet lithography (EUV) and ultra stable optical cavities.

Application value and full specification customization services

Our quartz products not only provide standardized tubes, rods, and plates, but also focus on providing customized processing services for global customers with full specifications and complex geometric shapes.

Solving the problem of high temperature thermal stress: In industrial furnaces and diffusion furnaces that require frequent temperature rise and fall, our customized quartz furnace tubes and boats can withstand repeated thermal shocks, solving the problem of traditional materials being prone to explosion and having a short lifespan.

Ensuring precise optical surface shape: In laser systems and space telescopes, temperature fluctuations can cause lens focal length drift. Our low expansion quartz substrate ensures that the optical system maintains design accuracy over a wide temperature range.

Seamless docking of dissimilar materials: To address the issue of sealing failure caused by differences in expansion coefficients when connecting quartz and metal flanges, we provide optimized transition structure design and specialized flexible sealing solutions to ensure the airtightness and reliability of the system at high temperatures.

Why choose us?

As a source customization manufacturer, we have the full industry chain capability from raw material screening to precision cold/hot processing. We not only provide high-purity quartz (over 99.99%) and synthetic quartz materials, but also equipped with diamond precision machining and high-temperature flame polishing equipment to ensure that the fixed parts achieve optical grade surface quality. Whether it's small-scale R&D sampling or large-scale industrial production, we can provide highly competitive delivery time and cost advantages.

Customer application case: Upgrading of continuous casting immersion nozzles in a large steel enterprise

Application background: In the continuous casting process of a large steel manufacturing enterprise, the molten steel is injected from the intermediate ladle into the critical node of the crystallizer - the immersion nozzle, which faces extreme working conditions for a long time. This component needs to withstand severe impacts from room temperature to molten steel temperatures above 1600 ℃, as well as high-speed erosion and chemical corrosion from molten steel.

Challenges faced: Traditional refractory materials often struggle under such high temperature conditions. Cracking and peeling caused by thermal shock not only contaminate the molten steel and form inclusions, but can also lead to production interruption in severe cases. In addition, manganese in high manganese steel water will undergo chemical reactions with conventional quartz, corrode the nozzle, and affect the service life and purity of the steel.

Our solution:

We have customized a high-purity fused silica immersion nozzle for it. With unparalleled thermal shock stability, this product can withstand significant temperature differences while maintaining structural integrity. For the special working conditions of high manganese steel, we have optimized the formula and microstructure, improved the chemical inertness of the material, and ensured the stability and cleanliness of the steel water flow. At the same time, we provide precision customization services for various sizes and wall thicknesses to perfectly adapt to customers' different models of continuous casting equipment.

Application effectiveness:

The upgraded customized quartz nozzle performs excellently during continuous casting, effectively resisting the erosion and thermal stress of high-temperature molten steel, greatly reducing the risk of cracking and peeling. This not only significantly extends the service life of the water outlet, reduces the frequency of shutdown and component replacement, but also ensures the purity of the molten steel from the source, bringing considerable economic benefits and production safety guarantees to customers.

If you are facing challenges in material selection or dimensional stability in high-temperature applications, please feel free to contact us at any time for exclusive quartz product customization solutions and quotations!

Luverre Quartz manufactures and sells a wide range of high quality quartz glass, including quartz tubes, quartz plates, quartz rods, quartz windows, quartz crucibles, quartz boats, quartz flanges, quartz beakers, quartz glass instruments, and more. We can meet all kinds of customized requirements for quartz glass products.