Apparatus and method for hot pressing irregularly shaped refractory articles

Patent · Tue Jan 24 00:00:00 EST 1978

OSTI ID:6300576

Steinkamp, W E; Ballard, A H

A die system is described for hot pressing irregularly shaped refractory articles. These articles are provided with high uniform density and dimensional accuracy. Two partially pressed compacts of the refractory material are placed in a die cavity between displaceable die punches having compact-contacting surfaces of the desired article configuration. A floating, rotatable block is disposed between the compacts. The displacement of the die punches towards one another causes the block to rotate about an axis normal to the direction of movement of the die punches to uniformly distribute the pressure loading upon the compacts for maintaining substantially equal volume displacement of the powder material during the hot pressing operation.

• Assignee: Department of Energy
• OSTI ID: 6300576
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBIDES
HOT PRESSING
NITRIDES
OXIDES
REFRACTORIES
ALUMINIUM
CHROMIUM
DENSITY
DIES
HAFNIUM
MOLYBDENUM
NIOBIUM
PLASTICITY
SILICON
STATORS
TANTALUM
TUNGSTEN
TURBINE BLADES
VANADIUM
ZIRCONIUM
CARBON COMPOUNDS
CHALCOGENIDES
ELEMENTS
FABRICATION
MATERIALS WORKING
MECHANICAL PROPERTIES
METALS
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
PRESSING
REFRACTORY METALS
SEMIMETALS
TRANSITION ELEMENTS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication