Quartz Cold Casting enables the production of quartz glass components that conventional manufacturing methods cannot produce. This innovative casting process based on a liquid sol allows for precise and flexible component geometries made of quartz glass in a single casting. The result is components with smooth transitions, high mechanical stability, user-friendly handling or functional structures such as integrated sealing surfaces.

The process offers decisive advantages, particularly for complex designs, small volumes, or applications with high requirements for cleanability and sample recovery.

In short: Quartz Cold Casting greatly shortens the path from concept to fully functional quartz glass parts, improving time-to-market. With QCC, OEM customers benefit from exceptional manufacturing expertise that significantly accelerates product development.

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Using the QCC process, a silicon-containing casting material is introduced into molds at room temperature. After curing, the material is converted into high-purity fused silica in a thermal step, meeting the required optical performance specifications.

The resulting product is manufactured as a single, seamless component. This monolithic design replaces multiple production steps typically required for conventional fused silica components, enabling a more efficient, transparent, and well-documented manufacturing process.

This manufacturing approach offers a high degree of design freedom. As the molds can be flexibly adapted, the geometry of the desired components can be precisely tailored for accurate and straightforward integration into the customer’s application. Functional features, such as sealing surfaces between glass and customer components made from materials like polymers, can be directly integrated into the quartz structure.

In the QCC process, highly pure synthetic raw materials are used to produce ultrapure quartz glass, ideally suited for a variety of optical, analytical, and technical applications. The properties of the resulting quartz glass are essentially equivalent to those of standard commercial quartz glasses.

Hellma Material 511 refers to a transparent quartz glass grade characterized by exceptionally high transparency from the UV to the IR spectral range.

Hellma material 518 is a carbon-doped, black-colored fused silica that serves as an absorber in optical applications

Data sheets containing additional material properties are available upon request:

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