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U.S. Department of Energy
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Adaptation of a conventional extrusion press to hydrostatic operation and some examples of application at high and low temperatures (in English and French)

Technical Report ·
OSTI ID:4936263
A description is presented of the technique used to transform a conventional vertical extrusion press for operation under hydrostatic pressures up to l3,000 bars. This is obtained by means of a mobile seal located at the rear part of the container. Hydrostatic extrusion can be performed up to 1200 deg C provided the proper lubricant is used. Examples of different types of extruded products are presented. They are either in the form of bars, tubes or sections and include cold extrusion of light alloys such as aluminum and magnesium; warm extrusion of copper-base alloys and zirconium alloys (e.g., zircaloy 4); and hot extrusion of stainless steels and nickel-base alloys. The plastic flow and the thermal exchanges are very complex. Some of the problems which have been encountered in developing and applying this technique are emphasized. (auth)
Research Organization:
CEA Centre d'Etudes Nucleaires de Grenoble, 38 (France). Div. de Metallurgie et d'Etude des Combustibles Nucleaires
Sponsoring Organization:
Sponsor not identified
NSA Number:
NSA-29-013138
OSTI ID:
4936263
Report Number(s):
CEA-CONF--2379; CONF-730670--2
Country of Publication:
France
Language:
English and French