REMET® UK Fused Silica is made from pure, natural white silica rich sand at 1980oC. At this temperature, the crystalline quartz melts and becomes non-crystalline. The resulting refractory is a pure material that is readily available, which provides a long life slurry practical for both ferrous and non-ferrous metal casting.
REMET UK Fused Silica has excellent thermal characteristics, as it exhibits a very low level of thermal expansion (5.0 x 10-7 cm/cmoC). Whilst it also provides low thermal conductivity, together these attributes provide a refractory with excellent thermal shock resistance.
This product provides for excellent slurry stability as well as good pH stability, when used in the primary coating. This will aid in preventing the solution from dropping out, which is crucial in achieving an even coat application, essential in avoiding surface defects.
The shell produced using REMET UK Fused Silica, is both light weight and highly permeable. Whilst the refractories unique behaviour under extreme heat, creates a shell that once cooled, allows for an easier knockout.
This material is offered in a wide variety of powder and grain sizes, including our Ez-Cast shell system, for both primary and secondary coat slurry applications.