Title:
IMDIRECT METAL ROD* SHAPE MATERIAL AND PIPE EXTRUSION MACHINE FOR USE IN ISOTHERMAL EXTRUSION
Document Type and Number:
Japanese Patent JPS5449967
Kind Code:
A
Abstract:
In order to prevent heat loss by conduction from the billet and billet container in an indirect extrusion press, the sealing plate, which closes off one end of the billet container bore, is made in two parts which are spaced apart when an extrusion stroke is not taking place so that an air gap appears between the two parts to interrupt the path of heat conduction through the sealing plate to the rest of the extrusion press. The air gap may be produced in the pressure plate, between the sealing plate and the moving cross-head, instead of or in addition to the gap in the sealing plate.
Inventors:
STEYVERS WINFRIED (DE)
ZILGES FRANZ-JOSEF (DE)
ZILGES FRANZ-JOSEF (DE)
Application Number:
JP10744278A
Publication Date:
April 19, 1979
Filing Date:
September 01, 1978
Export Citation:
Assignee:
SCHLOEMANN SIEMAG AG (DE)
International Classes:
B21C23/21; B21C27/00; B21C29/04; (IPC1-7): B21C23/21; B21C27/00