Hans-Joachim Pahnke Book

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The open die press for Japan
Casting & Forging
In 1971, a 80/100 MN push down press was put into
operation at Japan Casting & Forging (JCF) in Tobata,
Japan with a 250 metric tonne rail manipulator and a
press drive consisting of twelve RP 500 pumps.
The construction of this press featured a multi-part
cast steel frame with a two-column construction and
three main cylinders. All smaller presses mentioned
previously only used one main cylinder, with the exception
of the 27 MN Union Electric press, which was
a three-cylinder pull down press. With the JFC press,
an upset pressure of 450 bar was also achieved at
a working pressure of 315 bar. The 450 bar was created
by four of twelve RP 500, which featured smaller
pistons.
A few years later, the 110 MN open die press, the largest
open die press in two-column design for a long
time, was put into operation at Creusot-Loire.
100 MN press for Japan Casting & Forging (1972):
clamped columns screwed to the cross head
PAHNKE Engineering for
Creusot-Loire (1976):
110 MN press with several tie rods
per column (= pre-tensioned frame)