Apparatus for the detection and measurement of particulates in molten metal
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United States of America Patent
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-
Sep 20, 2005
Grant Date -
Oct 14, 2004
app pub date -
Nov 21, 2003
filing date -
Nov 21, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A probe to measure particulates suspended in molten metal includes an inner tube forming a receiving chamber. The tube includes an orifice permitting molten metal to flow into the chamber. A gas passageway extends out of the tube for connection to a vacuum source. A first electrode including a first member extends into the chamber. A second electrode surrounds a portion of the tube. The first and second electrodes connect to a measurement device for measuring changes in the electrical potential produced by particulates passing through the orifice. A liquidus depressing material within the chamber lowers the liquidus temperature of the molten metal and permits a longer period for measuring particulates therein. A second member is connected to the gas passageway at a first end of the second member. A chill block spaced from the liquidus depressing material is attached to a second end of the second member.
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