TPT September 2017

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I NDUS T RY
8 SEPTEMBER 2017
SeAH Changwon and SMS group build
tube extrusion press line in record time
SEAH Changwon Integrated Special
Steel (SeAH CSS) in South Korea has
commissioned a tube extrusion press
line, which SMS has recently supplied
in record time.
The 50-MN tube extrusion press line
installed in Changwon in South Korea
has an annual capacity of 35,000 tons of
tubes in diameters between 2" and 10"
in Fe and Ni-based austenitic steels,
duplex and super-duplex alloys as well
as special steels made of nickel-based
alloys. With the inauguration of the
plant taking place less than 24 months
after the contract signing, the team of
SeAH and SMS group specialists have
succeeded in sticking to an extremely
tight project schedule.
Within the scope of the contract
SMS group supplied a multi-stage IAS
induction heating plant, a vertical 20-
MN piercing press, a 50-MN extrusion
press and the run-out facilities. T
pusher-type two-strand horizon
induction heating plant with integrat
temperature equalisation chamb
processes billets of 204 to 380mm in
diameter. The billets are reheated in the
four-station vertical induction heating
plant before being prepared in the
piercing and expansion press for the
process in the tube press.
After a three-station final heating
process the billets are transferred to the
tube press. The run-out facilities with
quench and cooling table are designed
for extrusion lengths of up to 22m. SMS
group also supplied associated ancillary
equipment such as glass lubrication
systems, manipulation and auxiliary
equipment and a machine for making
glass pads.
In South Korea, SeAH Changwon
Integrated Special Steel produces
stainless steel bars, wire rod and
tube extrusion press line SeAH CSS
will expand its capacities and be able to
offer a wider range of tube diameters,
wall thicknesses and extruded lengths.
“We wanted to become more
productive. We are sure that we will
achieve this with our new extrusion
line. The extended range of products
will allow us to open up new customer
segments,” said CSS corporate senior
manager Kang Seung-Hoon. “With
SMS group we had a perfect partner,
capable of offering the complete
process chain – from reheating down
to the finished tube – from a single
source.”
The contract for the supply of the
equipment was signed in July 2015.
During the engineering phase it became
bvious that IAS and the SMS group’s
xtrusion press team worked efficiently
gether.
The equipment was installed and
commissioned in close cooperation with
the SeAH project team. The first tube
was extruded in January 2017. The of-
ficial inauguration took place by the end
of March. In recognition of the project
execution SeAH CSS CEO Lee Jee-
Yong presented SMS group executive
vice-president Ulrich Vohskämper with a
plaque of appreciation.
SMS group – Germany
Fax:
Website:
Rafter upgrades Yoder QVW-250 tube mill
RAFTER Equipment Corporation has
shipped a new RT-2000S strip entry
table, HFI weld squeeze box, and
double-sided turkshead straightener to
a North American tube producer.
The equipment will replace equipment
on a Yoder Manufacturing QVW-250
tube mill that was no longer robust
enough for the tubular products being
produced. The strip entry table was
updated to utilise common parts from
the company’s popular idle side roll
stand design. The unit’s guide roll blocks
now slide on bushed rods that allow mill
scale and dirt to fall away and be more
easily cleaned. The adjusting screws are
made of stainless steel with the centre
portion protected from contamination by
a telescoping screw cover.
The HFI weld squeeze box has a
familiar three-roll arrangement but
incorporates the company’s latest heavy-
duty, push on centre weld box design. The
design has been a popular retrofit item
since its introduction in 2015. Finally, the
turkshead straightener is a double-sided
version for straightening and de-twisting
of both round and rectangular tubes. The
unit includes removable faceplates for
enhanced quick-change possibilities and
two-axis remote adjustment of the entry
faceplate. The motorised adjustment
allows straightness corrections to be
made from a location downstream of the
turkshead.
Rafter Equipment Corporation – USA
Email:
Website:
The SeAH Changwon team