EXTRUSION PRESS AND CONTROL METHOD FOR EXTRUSION PRESS

WIPO Patent Application WO/2013/035462

A1

Provided are an extrusion press and control method for an extrusion press, provided with a means which can prevent phenomena in which a billet is blown out during an extrusion process as well as prevent billet blowout with a simple and inexpensive constitution. The extrusion press drives a main cylinder device (12) to extrude, by means of a stem (24), a billet (20) filled into a container (18) from a die (16) and form a product (20A). A gap measurement means (60) that measures a gap, during the extrusion process, arising at the container seal surface formed by pressing the die side end surface of the container (18) against the container side end surface of the die (16) is provided on an end platen (10) on the outer edge part of the container side end surface of the die (16). When the gap arising during the extrusion process is measured and the measured value is within a predetermined range of allowable values, a set value for the extrusion rate is lowered and a warning is issued. When the measured value exceeds the predetermined allowable values, the extrusion process is stopped.

YAMAMOTO TAKEHARU (JP)
YAKUSHIGAWA ATSUSHI (JP)
NAKANO KOJI (JP)

PCT/JP2012/069621

March 14, 2013

August 01, 2012

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UBE MACHINERY CORP LTD (JP)
YAMAMOTO TAKEHARU (JP)
YAKUSHIGAWA ATSUSHI (JP)
NAKANO KOJI (JP)

B21C31/00; B21C51/00

JPH03146217A	1991-06-21
JP2010179332A	2010-08-19
JPH04251610A	1992-09-08

AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)

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