Process for the production of parts having a cavity by pressing

Details Process for the production of parts having a cavity by pressing Process for the production of parts having a cavity by pressing

1990-11-21

1992-03-03

Simmons, David A.

Metal working

Method of mechanical manufacture

With testing or indicating

295271, 295276, 264112, 264313, 419 66, 419 67, 425DIG44, 425DIG124, B23P 1700

Patent

active

050920235

ABSTRACT:
A process for the production of, in particular, ceramic parts having a cavity by press molding or pressing sealed sheaths.
The core used for defining the cavity and preventing subsequent machining operations is initially more voluminous than the desired cavity and has an adequate ductility to allow partial extrusion during pressing. This avoids often excessive mechanical stresses, which can lead to a bursting or shattering of the densified part when the sheath is removed. This process has, application to the hot isostatic pressing of fragile materials.

REFERENCES:
patent: 1637707 (1927-08-01), Porter

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