Patent · US Expired

Process for the production of high temperature resistant, high density ceramic molded articles

US4606874A · kind A · utility

2Cited by

3References

7Claims

0Family size

Assignee

Nukem, LLC · DE

Inventors

Milan Hrovat · Rodenbach, DE
Hans Huschka
Heinrich Porth · Hanau, DE
Lothar Rachor
Thomas Schmidt-Hansberg · Frankfurt, DE

Key dates

Filing date	Jan 2, 1985
Grant date	Aug 19, 1986
Priority date	—
Expiry date	Jan 2, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S264/65
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

There is described a process for the production of high temperature resistant, high density ceramic molded articles at a temperature above 1300.degree. C. and at high pressure in a mold. For this purpose, the blank is heated outside the mold, transferred with a die at 1 to 10 m/sec into the cold mold, compressed there and ejected in the pressing direction. Thereby, the residence time in the mold must be less than 3 msec and the sum of the transport time of the blank from heating up to the mold and the residence time in the mold so regulated that the temperature drop between the nucleus of the blank and the surface of the blank does not exceed 150.degree. C.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.