IMPROVEMENTS IN OR RELATING TO THE PRODUCTION OF HOLLOW BODIES FROM METAL POWDER

Patent · Tue Aug 01 00:00:00 EDT 1961

OSTI ID:4843499

Davies, T J

A method is described for loose-sintering metal powder to form hollow bodies in which the likelihood of cracking during sintering and cooling is reduced. The method consists of loose-sintering the metal powder about a supporting core in a mold. The mold is of hollow cylindrical form and the core is in the form of a longitudinally corrugated thin walled tube and is of readily contractible material to accommodate shrinkage. The core is of wire gauze and is externally coated with a refractory oxide so as to present a smooth outer surface and thereby enable the production of a smooth bored tubular body. Axial end loading is applied to the sleeve of wire gauze so as to provide a regulated radial support for the tubular body during the sintering. Beryllium powder may be formed in this manner at 1200 deg C. (N.W.R.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-15-028021
• OSTI ID: 4843499
• Report Number(s): GB 874129
• Country of Publication: United Kingdom
• Language: English

Related Subjects

BERYLLIUM
CASTING
COATING
CONFIGURATION
COOLING
CRACKS
CYLINDERS
DEFORMATION
METALS, CERAMICS, AND OTHER MATERIALS
OXIDES
POWDER METALLURGY
PRESSURE
SHRINKAGE
SINTERING
SURFACES
TUBES