Process for preparing a powder mixture and its use

US5628046A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Norbert Dautzenberg · Wegberg, DE
• Karl-Heinz Lindner · Mülheim, DE
• Klaus Vossen · Meerbusch, DE

Key dates

• Filing date: Oct 31, 1995
• Grant date: May 6, 1997
• Expiry date: Oct 31, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S75/95
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for fabrication of sintered articles from a molybdenum-containing steel alloy by atomization, pressing, and sintering. The melt used for atomization has a molybdenum content determined as a function of the sintering temperature which lies in a range of 1050.degree.-1350.degree. C. The carbon content of the powder mixture is no more than 0.05% by weight and the reduction annealing takes place in a temperature range of 850.degree.-950.degree. C.