Ultrasonic degassing of molten metals
First Claim
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1. An ultrasonic device comprising:
- 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 consists of 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 the tip of the elongated probe; and
a booster between the ultrasonic transducer and the elongated probe.
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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.
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Citations
13 Claims
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1. 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 consists of 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 the tip of the elongated probe; and a booster between the ultrasonic transducer and the elongated probe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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 consists of a ceramic; a purging gas delivery system, wherein; the purging gas delivery system comprises a purging gas inlet and a purging gas outlet; the purging gas delivery system comprises a purging gas delivery channel in the elongated probe; and 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. - View Dependent Claims (10, 11, 12, 13)
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Specification