Device and method for producing metal powder using an induction coil and an intermediate coil

US12343800B2 · kind B2 · utility

Assignee

• ALD VACUUM TECHNOLOGIES GMBH · DE

Inventors

• Henrik FRANZ · Alzenau, DE
• Christian Lehnert · Bad Vilbel, DE
• Markus WINTON · Karben, DE
• Sergejs Spitans · Frankfurt am Main, DE

Key dates

• Filing date: May 9, 2022
• Grant date: Jul 1, 2025
• Expiry date: May 9, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A device for producing metal powder. This includes a melting chamber, a downstream atomization tower, and a nozzle assembly for atomizing a melt jet. The device further includes an induction coil disposed within the melting chamber and operated at a melting frequency fmelt, the induction coil is adapted to locally melt a material rod at least section-wise received therein, to produce the melt jet to be atomized, and a separate intermediate coil disposed within the melting chamber and operated at a base frequency fbase, wherein said intermediate coil is disposed downstream of the induction coil and aligned coaxially with the induction coil. The intermediate coil is configured to superheat the melt jet in a region between the induction coil and the nozzle assembly. The following applies to a frequency ratio FBS of the base frequency fbase to the melting frequency fmelt, 1≤FBS=fbase/fmelt≤500.