IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0502558
(2009-07-14)
|
등록번호 |
US-8216339
(2012-07-10)
|
발명자
/ 주소 |
- Forbes Jones, Robin M.
- Kennedy, Richard L.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
9 인용 특허 :
140 |
초록
▼
One non-limiting embodiment of an apparatus for forming an alloy powder or preform includes a melting assembly, an atomizing assembly, and a field generating assembly, and a collector. The melting assembly produces at least one of a stream of a molten alloy and a series of droplets of a molten alloy
One non-limiting embodiment of an apparatus for forming an alloy powder or preform includes a melting assembly, an atomizing assembly, and a field generating assembly, and a collector. The melting assembly produces at least one of a stream of a molten alloy and a series of droplets of a molten alloy, and may be substantially free from ceramic in regions contacted by the molten alloy. The atomizing assembly generates electrons and impinges the electrons on molten alloy from the melting assembly, thereby producing molten alloy particles. The field generating assembly produces at least one of an electrostatic field and an electromagnetic field between the atomizing assembly and the collector. The molten alloy particles interact with the at least one field, which influences at least one of the acceleration, speed, and direction of the molten alloy particles. Related methods also are disclosed.
대표청구항
▼
1. A method of forming one of a powder and a solid preform, the method comprising: producing at least one of a stream of molten alloy and a series of droplets of molten alloy in a melting assembly substantially free from ceramic in regions of the melting assembly contacted by the molten alloy;genera
1. A method of forming one of a powder and a solid preform, the method comprising: producing at least one of a stream of molten alloy and a series of droplets of molten alloy in a melting assembly substantially free from ceramic in regions of the melting assembly contacted by the molten alloy;generating particles of the molten alloy by impinging at least one electron field comprising a three-dimensional shape on the molten alloy from the melting assembly to atomize the molten alloy and produce molten alloy particles;producing at least one of an electrostatic field and an electromagnetic field, wherein the particles of the molten alloy interact with and are influenced by the field; andcollecting the molten alloy particles as one of a powder and a solid preform. 2. The method of claim 1, wherein producing at least one of a stream of molten alloy and a series of droplets of a molten alloy comprises melting a material using at least one of a vacuum double-electrode remelting device, a device comprising an electroslag remelting device and a cold induction guide, an electron beam melting device, and an electron beam cold hearth melting device. 3. The method of claim 1, wherein, prior to impinging the electron field on the molten alloy, a negative charge is induced in the molten alloy. 4. The method of claim 1, wherein the particles of molten alloy interact with and are influenced by the at least one of an electrostatic field and an electromagnetic field such that at least one of the acceleration, speed, and direction of the particles of molten alloy is affected in a predetermined manner. 5. The method of claim 1, wherein the at least one of an electrostatic field and an electromagnetic field is generated by a device comprising at least one high voltage DC power supply, and wherein one of the positive pole and negative pole of the at least one power supply is electrically connected to one of the atomizing assembly and the collector, and the other of the atomizing assembly and the collector is electrically grounded. 6. The method of claim 1, wherein the at least one of an electrostatic field and an electromagnetic field is generated by at least one magnetic coil that generates an electromagnetic field, and wherein the particles of molten alloy pass through the at least one magnetic coil. 7. The method of claim 1, wherein collecting the particles of molten alloy comprises collecting the particles on or in one of a surface, a platen, a mandrel, a mold, a chamber, and a can. 8. The method of claim 1, wherein collecting the particles of molten alloy comprises holding a collector at one of a ground potential and a positive potential to thereby attract negatively charged molten alloy particles produced by impinging electrons on the molten alloy. 9. The method of claim 1, wherein the method forms a powder product. 10. The method of claim 1, wherein the method comprises one of spray forming and nucleated casting and produces a solid preform as a product. 11. A method of atomizing an alloy, the method comprising: producing at least one of a stream of molten alloy and a series of droplets of molten alloy in a melting assembly, wherein the melting assembly induces a negative charge in the molten alloy; andgenerating particles of the molten alloy by impinging at least one electron field comprising a three-dimensional shape on the molten alloy from the melting assembly to atomize the molten alloy and produce molten alloy particles. 12. The method of claim 11, wherein prior to impinging the electron field on the molten alloy, a negative charge is induced in the molten alloy. 13. The method of claim 11, wherein the melting assembly is substantially free of ceramic in regions of the melting assembly contacted by the molten alloy.
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