Atomization unit for atomizing metal melts, in particular for powder-metallurgical purposes

Patent metadata

Field	Value
Publication number	US-12447530-B2
Application number	US-202218693131-A
Country	US
Kind code	B2
Filing date	Nov 2, 2022
Priority date	Nov 3, 2021
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

An atomization unit ( 1 ) for atomizing metal melts, in particular for powder-metallurgical purposes, includes a crucible ( 2 ) having a base outlet ( 4 ). A melt nozzle ( 16 ) is arranged below the base outlet ( 4 ) and a gas nozzle ( 9 ) is preferably arranged concentrically with respect to the melt nozzle ( 16 ). The melt nozzle ( 16 ) is formed in multiple parts and comprises a casing body along with a nozzle core ( 17 ). The nozzle core ( 17 ) passes through a conical seat within the casing body.

First claim

The invention claimed is:

1. An atomization unit ( 1 ) for atomizing metal melts, comprising:
a crucible ( 2 ) having a base outlet ( 4 );
a melt nozzle ( 16 ) that is arranged below the base outlet ( 4 ); and
a gas nozzle ( 9 ) that is arranged concentrically with respect to the melt nozzle ( 16 ),
wherein the melt nozzle ( 16 ) is formed in multiple parts and comprises
a casing body and
a nozzle core ( 17 ),

wherein the nozzle core ( 17 ) passes through a conical seat inside the casing body,
wherein the casing body comprises a heating body ( 12 ), and
wherein the heating body ( 12 ) rests against a contact surface of the casing body.

2. The atomization unit ( 1 ) according to claim 1 ,
wherein the casing body is a perforated brick ( 7 ).

3. The atomization unit ( 1 ) according to claim 1 ,
wherein the nozzle core ( 17 ) is held between the casing body and a base of the crucible ( 2 ).

4. The atomization unit ( 1 ) according to claim 1 ,
wherein the nozzle core ( 17 ) is held concentrically and in a positive-locking manner in the conical seat of the casing body by a circumferential collar ( 18 ).

5. The atomization unit ( 1 ) according to claim 1 ,
wherein the casing body comprises at least one resistance heating element embedded therein.

6. The atomization unit ( 1 ) according to claim 1 ,
wherein the heating body ( 12 ) is formed as a heating pad and is embedded between the casing body and a gas nozzle body ( 8 ) of the gas nozzle.

7. The atomization unit ( 1 ) according to claim 1 ,
wherein the heating body ( 12 ) is a ceramic heating element.

8. The atomization unit ( 1 ) according to claim 6 ,
wherein the heating body ( 12 ) is inserted into a base-side recess of the casing body and is in heat-conducting contact with both the casing body and the gas nozzle body ( 8 ).

9. The atomization unit ( 1 ) according to claim 1 ,
wherein an outer contour of the nozzle core ( 17 ) forms a parting joint with the crucible ( 2 ) and with the casing body, and
wherein the parting joint is formed as a labyrinth seal.

10. The atomization unit ( 1 ) according to claim 1 ,
wherein the atomization unit ( 1 ) is configured for atomizing metal melts for powder-metallurgical purposes.

Assignees

• Sms Group Gmbh

Inventors

• Weiland Peter
• Vogl Norbert
• Pürling Reiner
• Gellings Lukas

Classifications

• B22F2009/088

  Fluid nozzles, e.g. angle, distance · CPC title

• B22F2009/0888

  casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control · CPC title

• B22F2009/0892

  casting nozzle; controlling metal stream in or after the casting nozzle · CPC title

• B22F9/082 Primary

  atomising using a fluid (using centrifugal force B22F9/10) · CPC title