Molten metal heating method
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United States of America Patent
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-
Jul 18, 1989
Grant Date -
N/A
app pub date -
Jun 17, 1988
filing date -
Jun 24, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A molten metal heating method according to this invention employs a heater comprising: at least one heat evolving substance disposed in contact with a molten metal held in a container with one surface thereof; and an electrode disposed in contact with the other surface of the heat evolving substance but not in contact with the molten metal. With this arrangement, a voltage is applied between the electrode and the molten metal to flow an electric current in the heat evolving substance in thicknesswise thereof and causes the heat evolving substance to evolve heat to heat the heater at a high temperature. Thus, the heater heats the molten metal, and controls the temperature of the molten metal. As a whole, this invention improves the quality of metal products. In particular, the heater is less likely to be broken by the heat confinement in it, and can be made of a wide variety of materials.
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