Method for making metal powder of low oxygen content

US4104342A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Otto Wessel · Duisburg, DE
• Georg Hofmann · Lauffen am Neckar, DE
• Hartmut Gesell · Duisburg, DE
• Werner Scholz · Duisburg, DE

Key dates

• Filing date: Aug 29, 1972
• Grant date: Aug 1, 1978
• Expiry date: Aug 29, 1992

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S264/51
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for making metal powder by atomizing molten metal is improved by causing the solidifying metal droplets to be subjected to a whirling flow of a powdery coolant such as a different powder, e.g. quartz sand or powder separated from the extracted flow of powder just made and cooled additionally. The whirling flow is sustained by blowing an inert gas in up direction into the powder collection chamber.