IT1249635B - DEVICE FOR THE ATOMIZATION OF LIQUID METALS FOR THE PRODUCTION OF POWDERS - Google Patents

DEVICE FOR THE ATOMIZATION OF LIQUID METALS FOR THE PRODUCTION OF POWDERS

Info

Publication number
IT1249635B
IT1249635B ITRM910470A ITRM910470A IT1249635B IT 1249635 B IT1249635 B IT 1249635B IT RM910470 A ITRM910470 A IT RM910470A IT RM910470 A ITRM910470 A IT RM910470A IT 1249635 B IT1249635 B IT 1249635B
Authority
IT
Italy
Prior art keywords
hollow
outlet
symmetry
axis
chamber
Prior art date
Application number
ITRM910470A
Other languages
Italian (it)
Inventor
Giovanni A Barcaro
Original Assignee
Sviluppo Materiali Spa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sviluppo Materiali Spa filed Critical Sviluppo Materiali Spa
Priority to ITRM910470A priority Critical patent/IT1249635B/en
Publication of ITRM910470A0 publication Critical patent/ITRM910470A0/en
Priority to EP19920110712 priority patent/EP0520442A3/en
Publication of ITRM910470A1 publication Critical patent/ITRM910470A1/en
Application granted granted Critical
Publication of IT1249635B publication Critical patent/IT1249635B/en

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
    • B22F9/082—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 atomising using a fluid
    • 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
    • B22F9/082—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 atomising using a fluid
    • B22F2009/088—Fluid nozzles, e.g. angle, distance

Abstract

Dispositivo per l'atomizzazione di metalli liquidi, provvisto di un elemento cavo, con asse di simmetria longitudinale, in cui fluisce metallo liquido verso una sezione di uscita e di una camera a simmetria cilindrica racchiudente detto elemento cavo e con medesimo asse di simmetria longitudinale, in cui la sezione di uscita dall'elemento cavo del metallo è posta al di sotto delle sezioni di uscita dalla camera dei gas di atomizzazione i quali a loro volta fluiscono concentricamente in condotti anulari della camera svolgendo sia una energica azione frantumante, intersecando la vena fluida in forma di cono cavo con vertice sul detto asse di simmetria rivolto verso l'esterno, sia una efficace azione di contenimento, essendo proiettati parallelamente su tutta la periferia della vena fluida. Si ottengono così non solo polveri a granulometria fine, di morfologia sferica e con scarsissima presenza di satelliti (particelle piccole saldate a particelle grandi), ma anche un efficace controllo dei gas tale da eliminare fastidiosi fenomeni di splash-back e vortici localizzati intorno alle sezioni di uscita del metallo.Device for atomizing liquid metals, provided with a hollow element, with longitudinal symmetry axis, in which liquid metal flows towards an outlet section and with a cylindrical symmetry chamber enclosing said hollow element and with the same axis of longitudinal symmetry, in which the outlet section from the hollow metal element is placed below the outlet sections from the atomization gas chamber which in turn flow concentrically into the annular ducts of the chamber carrying out both an energetic crushing action, intersecting the fluid vein in the form of a hollow cone with vertex on said axis of symmetry facing outwards, it is an effective containment action, being projected parallel on the whole periphery of the fluid vein. In this way, not only fine particle size particles, with spherical morphology and very little presence of satellites (small particles welded to large particles) are obtained, but also an effective gas control to eliminate annoying splash-back phenomena and vortices located around the sections metal outlet.

ITRM910470A 1991-06-27 1991-06-27 DEVICE FOR THE ATOMIZATION OF LIQUID METALS FOR THE PRODUCTION OF POWDERS IT1249635B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITRM910470A IT1249635B (en) 1991-06-27 1991-06-27 DEVICE FOR THE ATOMIZATION OF LIQUID METALS FOR THE PRODUCTION OF POWDERS
EP19920110712 EP0520442A3 (en) 1991-06-27 1992-06-25 Device for atomizing liquid metals for powder production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM910470A IT1249635B (en) 1991-06-27 1991-06-27 DEVICE FOR THE ATOMIZATION OF LIQUID METALS FOR THE PRODUCTION OF POWDERS

Publications (3)

Publication Number Publication Date
ITRM910470A0 ITRM910470A0 (en) 1991-06-27
ITRM910470A1 ITRM910470A1 (en) 1992-12-27
IT1249635B true IT1249635B (en) 1995-03-09

Family

ID=11400227

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910470A IT1249635B (en) 1991-06-27 1991-06-27 DEVICE FOR THE ATOMIZATION OF LIQUID METALS FOR THE PRODUCTION OF POWDERS

Country Status (2)

Country Link
EP (1) EP0520442A3 (en)
IT (1) IT1249635B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106180739B (en) * 2016-10-10 2018-08-14 江西悦安超细金属有限公司 A kind of aerosolization nozzle being used to prepare minute spherical powder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1118623A (en) * 1954-03-26 1956-06-08 Mannesmann Ag Method and apparatus for manufacturing metal powder
US3588951A (en) * 1968-11-08 1971-06-29 William G Hegmann Fractional disintegrating apparatus
GB8622949D0 (en) * 1986-09-24 1986-10-29 Alcan Int Ltd Alloy composites
DE3811077A1 (en) * 1988-03-29 1989-10-19 Mannesmann Ag DEVICE FOR SPRAYING A SPRAYING RAY OF LIQUID METAL

Also Published As

Publication number Publication date
EP0520442A3 (en) 1993-08-04
EP0520442A2 (en) 1992-12-30
ITRM910470A0 (en) 1991-06-27
ITRM910470A1 (en) 1992-12-27

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970630