Casting material for producing casting molds for casting high-melting point materials
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United States of America Patent
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Feb 6, 2007
Grant Date -
May 19, 2005
app pub date -
Dec 7, 2001
filing date -
Dec 7, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The casting-mold material designed to manufacture casting molds used in casting high melting-point substances. The casting mold formed from a powder component containing magnesium oxide and aluminum oxide and a liquid component. The powder component additionally contains a calcium aluminate and an alkali fluoride or an earth alkali fluoride and the liquid component contains a polyelectrolyte and a basic component, the latter determining the liquid component pH value between 10 and 14. A fluid slip is prepared by mixing the powder and liquid components and is dried, hardened and sintered to produce a hollow mold.
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