KAPSEL FOR INNESLUTNING I VAKUUM FOR VARMISOSTATISK PRESSNING AV KOMPONENTER AV METALL, HARDMETALL ELLER KERAMIK

The component is placed in the capsule in a vacuum, the capsule having a tubular shape with radial holes near its open end; and a round plug is placed in the open end to seal the radial holes. The capsule is pref. made of a refractory metal, e.g. Mo, Nb, Ta, W; and the length (L) of the plug pref. c...

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Bibliographic Details
Main Authors W SIEBMANNS, W HUTHER
Format Patent
LanguageSwedish
Published 11.08.1986
Edition4
Subjects
ARTIFICIAL STONE
CASTING
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
PRESSES
PRESSES IN GENERAL
REFRACTORIES
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
SLAG
TRANSPORTING
TREATMENT OF NATURAL STONE
WORKING CEMENT, CLAY, OR STONE
WORKING METALLIC POWDER
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Summary:The component is placed in the capsule in a vacuum, the capsule having a tubular shape with radial holes near its open end; and a round plug is placed in the open end to seal the radial holes. The capsule is pref. made of a refractory metal, e.g. Mo, Nb, Ta, W; and the length (L) of the plug pref. corresponds with the average free path length of a mol. of the residual gas in the capsule. At least one third of the plug length (L) is solid where it enters the capsule; and the capsule is pref. heated in vacuo before inserting the plug, so a shrink fit is obtd. on cooling; an induction coil is pref. used for this heating operation. An inexpensive but reliable method of sealing the evacuated capsule is provided so gas cannot enter during cold or hot isostatic pressing.
Bibliography:Application Number: SE19780008638