Refractory Sheets. (Metalcasting Supplies).Zircar Refractory Composites, Inc., has developed the Refractory Sheet Type RSLE-57, a low expansion high strength reinforced silica matrix composite. The refractory sheet exhibits a low coefficient of expansion Noun 1. coefficient of expansion - the fractional change in length or area or volume per unit change in temperature at a given constant pressure expansivity coefficient - a constant number that serves as a measure of some property or characteristic which provides remarkable resistance to the thermal shock Thermal shock in mechanical models Thermal shock is the name given to cracking as a result of rapid temperature change. Glass and ceramic objects are particularly vulnerable to this form of failure, due to their low toughness, low thermal conductivity, and high up to 1200C in an oxidizing atmosphere and permits its use with rapid variation in temperature in that zone. It also offers a low thermal conductivity, electrical insulation Electrical insulation A nonconducting material that provides electric isolation of two parts at different voltages. To accomplish this, an insulator must meet two primary requirements: it must have an electrical resistivity and a dielectric strength , high chemical purity chemical purity, n the degree to which a substance is undiluted or unmixed with extraneous material, typically expressed as a percentage (%). and resistance to corrosion from molten metal and glass. Zircar Refractory Composites, Inc. Select No. 035 at www.moderncasting.com/info. |
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