Page 23 - ITAtube Journal 3 2025

Technical papers
NAKATA FFX 24” line “simulation graphic
image result
This capability also enables NAKATA to min-
imize trial-and-error forming tests during
on-site commissioning, significantly reduc-
ing startup time and risk.
As a representative example, simulation
results for a 24-inch OD pipe with 22 mm
wall thickness using X70-equivalent materi-
al were presented
NAKATA also introduced its newly devel-
oped FFX mill design. In this configuration,
the FFX forming rolls are non-driven, while
universally designed pinch-roll (PR) stands
are installed between each FFX BD stand to
provide the driving force. In addition, each
FFX BD stand can be pulled out toward
the operator side, significantly improving
accessibility for maintenance work such as
roll position recalibration.
In addition to the FFX system, NAKATA
presented its latest development of an-
other universal roll system, the ROLL BOX,
which is applied in the shaping section. This
system supports a wide range of square
and rectangular sizes and has already been
applied to mill lines from 5 inches up to 24
inches.
Good strip top-end threading to FFX section
Stable strip traveling to CL section
Smooth strip top-end threading in to SQ stand
(important KEY point for coil-to-coil mill line)
ITAtube Journal December 2025 23