Ultrasonic degassing of molten metals

US9617617B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9617617-B2
Application numberUS-201314024932-A
CountryUS
Kind codeB2
Filing dateSep 12, 2013
Priority dateApr 9, 2010
Publication dateApr 11, 2017
Grant dateApr 11, 2017

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

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.

First claim

Opening claim text (preview).

What is claimed is: 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 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 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. 2. The ultrasonic device of claim 1 , wherein the ceramic is a Sialon. 3. The ultrasonic device of claim 2 , wherein the elongated probe is a unitary part. 4. The ultrasonic device of claim 1 , wherein the ceramic is silicon carbide. 5. The ultrasonic device of claim 4 , wherein the elongated probe is a unitary part. 6. The ultrasonic device of claim 1 , wherein the tip of the elongated probe comprises a ceramic. 7. The ultrasonic device of claim 6 , wherein the ceramic is a Sialon. 8. The ultrasonic device of claim 1 , wherein the ultrasonic device comprises two or more elongated probes. 9. The ultrasonic device of claim 1 , wherein the elongated probe is generally cylindrical and the ceramic is silicon carbide. 10. The ultrasonic device of claim 1 , wherein the elongated probe is a unitary part. 11. The ultrasonic device of claim 1 , wherein the purging gas delivery system is capable of a volumetric flow rate in a range from about 0.1 to about 150 L/min. 12. The ultrasonic device of claim 1 , wherein the purging gas delivery system comprises a purging gas delivery channel in the elongated probe. 13. The ultrasonic device of claim 1 , further comprising a cooling system surrounding at least a portion of the elongated probe. 14. The ultrasonic device of claim 13 , wherein the cooling system comprises channels for a cooling fluid. 15. An ultrasonic device comprising: 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 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. 16. The ultrasonic device of claim 15 , wherein the purging gas delivery system comprises a purging gas delivery channel in the elongated probe. 17. The ultrasonic device of claim 15 , wherein the purging gas delivery system is capable of a volumetric flow rate in a range from about 0.1 to about 150 L/min.

Assignees

Inventors

Classifications

  • Refining by treating with gases, e.g. gas flushing {also refining by means of a material generating gas in situ} · CPC title

  • Introducing a fluid jet or current into the charge (F27D3/18 takes precedence) · CPC title

  • the fluid being a treatment gas · CPC title

  • C22B9/02Primary

    Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action {including acoustic waves; (C22B9/003, C22B9/006, C22B9/05, C22B9/22 take precedence)} · CPC title

  • using inert or reactive gases (C22B21/066 and C22B21/068 take precedence) · CPC title

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Frequently asked questions

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What does patent US9617617B2 cover?
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.
Who is the assignee on this patent?
Southwire Co Llc
What technology area does this patent fall under?
Primary CPC classification C22B9/02. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Apr 11 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).