190
M
ARCH
2014
7-11 April 2014
The fin passes are cassettes stands
and typically consist of three four-roll
stands where two of the rolls are driven
in each stand. This design allows for a
strong stand, and the added strength of
the cassette results in lower distortion
under load than the conventional
stand configuration. The position of
the rolls can be individually adjusted,
and the position of the cassette can
also be adjusted, which allows for easy
adjustment of the pass line height.
API pipe mill with calibration sections
As the four rolls are contained within a
cassette, when a size change is required
all of the cassettes are changed at the
same time. The cassette changeover is
conducted automatically and typically
takes 10 to 15 minutes with no operator
involvement. When the changeover is
complete the motorised roll positioning
equipment, in conjunction with the HMI
screen menus and recipes, positions
the rolls at the predetermined optimum
position for each product.
While the mill is running, the tooling
in the cassettes that are off-line are
changed to the next size to be produced.
The cassette-style stands are also used
in the calibration section of the mill to
make round, square and rectangular
sections. On mills where a rotary
sizing mill is used to make precision
pipe, the cassette stands are used to
make square and rectangular structural
sections.
Fax: +81 78 992 9139
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Magnetic Analysis Corp
6G40
USA
WITH more than 85 years of experience
in designing and manufacturing non-
destructive test instruments and
systems for the metals industry,
Magnetic Analysis Corp will be featuring
its newest ultrasonic, eddy current and
flux leakage inspection systems for tube
manufacturers.
A demonstration eddy current 50mm
Rotary tester will be on display in
the booth. Designed to detect long,
continuous, seam type defects in tube
and bar, MAC’s Rotomac
®
Z unit will be
capable of rotating at 12,000 RPM with
four test channels. The higher RPM
allows faster throughput speeds on the
production line, and the new design
also provides greater convenience such
as shorter setup time, and quicker and
easier adjustments for different size
products.
Building on the success of MAC’s
Echomac
®
Rotary ultrasonic testers,
the company will be featuring a new
Spinning Tube ultrasonic test system at
Tube 2014.
This system features a unique APC
(automatic pitch control) transducer
carrier which contains the water
couplant and follows and adjusts to the
pitch of the tube as it rotates through the
tester.
