Ultrasonic Degassing of Molten Metals
1 Assignment
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Accused Products
Abstract
Methods for degassing and for removing impurities from molten metals are disclosed. These methods can include operating an ultrasonic device in a molten metal bath, and adding a purging gas into the molten metal bath in close proximity to the ultrasonic device.
7 Citations
38 Claims
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1-20. -20. (canceled)
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21. An ultrasonic device comprising:
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an ultrasonic transducer; an elongated probe comprising a first end and a second end, the first end attached to the ultrasonic transducer and the second end comprising a tip, wherein the elongated probe comprises a ceramic; a purging gas delivery system, wherein the purging gas delivery system comprises a purging gas inlet and a purging gas outlet, wherein the purging gas outlet is at or within about 3 cm of the tip of the elongated probe; and a booster between the ultrasonic transducer and the elongated probe, wherein the purging gas inlet is in the booster. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. An ultrasonic device comprising:
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an ultrasonic transducer; a unitary, generally cylindrical, elongated probe comprising a first end and a second end, the first end attached to the ultrasonic transducer and the second end comprising a tip, wherein the elongated probe comprises a Sialon; a purging gas delivery system, wherein the purging gas delivery system comprises a purging gas inlet and a purging gas outlet, wherein the purging gas outlet is at or within about 5 cm of the tip of the elongated probe; and a booster between the ultrasonic transducer and the elongated probe, wherein the purging gas inlet is in the booster. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification