Hot plate for keeping molten metal in a molten state
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United States of America Patent
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Nov 8, 1994
Grant Date -
N/A
app pub date -
Oct 26, 1993
filing date -
Oct 26, 1993
priority date (Note) -
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Abstract
A hot plate is used with a molten metal storage container in which a molten metal or bath is temporarily stored prior to any subsequent casting process, and keeps the molten metal temporarily stored in the storage container at a specific constant temperature by heating the molten metal as required. The temperature of the stored molten metal is controlled so that it cannot fall below the particular temperature. The hot plate includes a heating unit formed in a flat shape from any suitable heat resistant, electrically insulating material and having an electric heating wire or coil therein: and A box unit made of any suitable ceramic material has the flat heating unit freely inserted and removably mounted therein. As a variation of the hot plate, the box unit may include a ceramic coating layer formed on the outer peripheral surface thereof, the ceramic coating layer being reinforced with any suitable fibrous ceramic textile. Leads from the electric heating wire or coil may be drawn through the lateral side of the box unit near an upper open side at the top of the box unit.
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