FR2391799A1 - Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows - Google Patents
Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flowsInfo
- Publication number
- FR2391799A1 FR2391799A1 FR7717296A FR7717296A FR2391799A1 FR 2391799 A1 FR2391799 A1 FR 2391799A1 FR 7717296 A FR7717296 A FR 7717296A FR 7717296 A FR7717296 A FR 7717296A FR 2391799 A1 FR2391799 A1 FR 2391799A1
- Authority
- FR
- France
- Prior art keywords
- tube
- hole
- magnetic field
- fed
- rotating magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/10—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The molten metal or alloy is fed down a stationary tube (a) with a small outlet hole (b) in its bottom end; and the melt is rapidly rotated inside tube (a) by a rotating magnetic field created by a fixed stator surrounding tube (a). The result is that fine droplets of metal leave hole (b) as a cone of spray with its apex in hole (b). The pref appts. used a tube (a) with an axial calibrated hole (b); and stator coils fed with 3-phase electric current and possibly using magnetic pole pieces or circuits; or the coils may consist of tubular conductors fed with oil for removing heat. Tube (a) may be made in two parts. The process and device is used esp. to mfr. metal powder or shot of controlled size, or for collecting the drops on a cooled support or drum to mfr. sheet or tubes. The process can be also used to achieve chemical or physical transfers between the droplets and a gas, e.g. for oxidin.; removal of oxide; or degassing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7717296A FR2391799A1 (en) | 1977-05-27 | 1977-05-27 | Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7717296A FR2391799A1 (en) | 1977-05-27 | 1977-05-27 | Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2391799A1 true FR2391799A1 (en) | 1978-12-22 |
FR2391799B1 FR2391799B1 (en) | 1981-10-30 |
Family
ID=9191740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7717296A Granted FR2391799A1 (en) | 1977-05-27 | 1977-05-27 | Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2391799A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987007546A1 (en) * | 1986-06-13 | 1987-12-17 | Extramet | Method and device for the granulation of a molten material |
EP0260617A1 (en) * | 1986-09-16 | 1988-03-23 | Centrem S.A. | Process and apparatus for preparing and finishing metallic materials |
WO1988008345A1 (en) * | 1987-04-28 | 1988-11-03 | Otdelenie Problem Preobrazovania I Ispolzovania El | Method and device for making granules from a metal melt |
WO1990011379A1 (en) * | 1989-03-17 | 1990-10-04 | Fiziko-Tekhnichesky Institut Akademii Nauk Belorusskoi Ssr | Method and installation for processing scrap of aluminium and of its alloys |
EP3479926A1 (en) | 2017-11-06 | 2019-05-08 | Technische Universität Graz | Method for modifying the particle shape and the particle size distribution of aluminum-based powders |
-
1977
- 1977-05-27 FR FR7717296A patent/FR2391799A1/en active Granted
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987007546A1 (en) * | 1986-06-13 | 1987-12-17 | Extramet | Method and device for the granulation of a molten material |
FR2600000A1 (en) * | 1986-06-13 | 1987-12-18 | Extramet Sa | PROCESS AND DEVICE FOR GRANULATING A MOLTEN METAL |
AU606600B2 (en) * | 1986-06-13 | 1991-02-14 | Extramet Industries | Method and device for the granulation of a molten material |
EP0260617A1 (en) * | 1986-09-16 | 1988-03-23 | Centrem S.A. | Process and apparatus for preparing and finishing metallic materials |
US4863509A (en) * | 1986-09-16 | 1989-09-05 | Centrem S.A. | Method and apparatus for producing and further processing metallic substances |
WO1988008345A1 (en) * | 1987-04-28 | 1988-11-03 | Otdelenie Problem Preobrazovania I Ispolzovania El | Method and device for making granules from a metal melt |
WO1990011379A1 (en) * | 1989-03-17 | 1990-10-04 | Fiziko-Tekhnichesky Institut Akademii Nauk Belorusskoi Ssr | Method and installation for processing scrap of aluminium and of its alloys |
GB2235701A (en) * | 1989-03-17 | 1991-03-13 | Fiz Tekhn I Akademii Nauk Bssr | Method and installation for processing scrap of aluminium and of its alloys |
EP3479926A1 (en) | 2017-11-06 | 2019-05-08 | Technische Universität Graz | Method for modifying the particle shape and the particle size distribution of aluminum-based powders |
Also Published As
Publication number | Publication date |
---|---|
FR2391799B1 (en) | 1981-10-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CA | Change of address | ||
TP | Transmission of property | ||
CA | Change of address | ||
TP | Transmission of property | ||
ST | Notification of lapse |