Full-density, net-shape powder consolidation using dynamic magnetic pulse pressures

The full-density consolidation of powders into net-shape parts yields high green strength, low shrinkage, short sinter times, superior mechanical properties, and low manufacturing costs. The conventional low-cost, single-press, single-sinter process typically densifies powders at > 65% green dens...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:JOM (1989) 1999-07, Vol.51 (7), p.36-37
Hauptverfasser: Chelluri, Bhanu, Barber, John P.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The full-density consolidation of powders into net-shape parts yields high green strength, low shrinkage, short sinter times, superior mechanical properties, and low manufacturing costs. The conventional low-cost, single-press, single-sinter process typically densifies powders at > 65% green density. This article desribes the Magnepress process, a powder-prcoessing technique wherein pulsed magnetic pressures consolidate powders into full-density parts without admixed lubricants or binders. The Magnepress techique is especially suitable for producing net-shape products with radial symmetry (e.g., rods, cylindrical parts with internal features, tubular shapes, and high aspect-ratio specimens). Materials mentioned include tungsten-steel composites, samarium cobalt, aluminum 7075, tungsten, plastic-coated iron, 4405, M2 tool steel, 304 stainless, HTSC, and alumina.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-999-0108-5