Thermally and Chemically Resistant, Tin-Based Tooling for Glass Melting

Tech ID: 30215 / UC Case 2019-577-0

Abstract

Researchers at the University of California, Davis have developed a tin-based tooling that exhibits high thermal shock resistance and has low chemical reactivity. This tooling can be produced using standard slip casting techniques by incorporating newly-developed additives.

Full Description

Platinum toolings are used currently for most glass melting applications. These toolings need to be reused in order to be cost-effective. The toolings must also withstand extreme thermal shocks and not dissolve when molten glass is inside of them – so as to maintain the desired chemical composition of the final glass product. After use, the toolings are frequently cleaned with hydrofluoric acid. Current tooling production processes thus use very expensive materials: a cheaper alternative for toolings is desirable.

Researchers at the University of California, Davis have developed such an alternative – a tin-based, ceramic tooling that has high thermal shock resistance and low chemical reactivity. The tolling can be produced using standard slip casting techniques. The resulting tooling maintains industry standards for both thermal characteristics and resistance to chemical attack – all at a much lower cost than current alternatives.

Applications

  • Tooling for glass melting and production

Features/Benefits

  • Tooling is resistant to thermal shocks
  • Tooling is chemically resistant; it will not dissolve when glass is melted inside
  • Tooling can be cleaned with hydrofluoric acid without dissolving
  • Produced with standard slip casting techniques

Patent Status

Patent Pending

Contact

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Inventors

  • Castro, Ricardo H.R.
  • Killilea, Sean

Other Information

Keywords

crucible, thermal shock, slip casting, tooling

Categorized As