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Metals
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Metals:
Flat Products Hot Rolling
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FLAT PRODUCTS HOT ROLLING
Avtron Flat Products Hot Rolling Control Systems ensure the highest mill production availability and the best rolling performance possible. Our engineered system solutions have proven we are the Uptime and Performance Experts in North America and Asian Mills. Our zero-downtime, cost-effective and easy-to-install limited system upgrades can get your mill operating at peak performance for a fraction of the cost of an all-new system.
Avtron has many drive installations on world-record producing Continuous Casting and Hot Rolling Mills. We can offer your mill engineered diagnostic and drive system solutions for all areas of Hot Strip and Plate Mills including Steckel and Roughing Mills, Edgers, Scale Breakers, Coil Boxes, Crop Shears, Holding/Runout Tables, Finishing Mills, and Downcoilers.
Avtron also offers its Performance View Process Diagnostic System for Hot Rolling Applications. The system automatically uploads and stores events, status bits, drive values, and PLC data from the controllers used in these areas of the mill. This data can be viewed, searched, and manipulated easily and quickly through our P.V. Viewer software to allow faster problem identification and repair. It can also be used as part of a Predictive or Preventive Maintenance Program to establish 'normal running conditions' for later comparisons. |
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Blooming
Mills |
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Avtron has retrofit experience in several
projects to upgrade Blooming Mills. We have done both the Main Mill and
the Auxiliary Drives for these applications.
Our ADDvantage-32
(TM)
Advanced
Firing Module has been used for SCR retrofits on Main Mill 12-pulse
drives and our ADDvantage-32 Advanced DC Drive has been used for the
auxiliary sections. These retrofits can save tens of thousands of dollars in capital expenditures
and can be done with Zero-Downtime installation and startup schedules.
We also have AC drives available for the table sections of these
mills. We offer both a stand-alone, non-regenerative and a common DC
bus design for regenerative, reversing applications. These can be
applied in either one-drive/one-motor/one roll or
one-drive/multi-motor/multi-roll configurations. Our AC drives are
available up to 2000 HP and 690 VAC. |
 Hot Strip Mill AC
System Applications |
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Hot Strip Mills |
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Avtron drives have been used on all sections
of Hot Strip Mills including the main drives for the Roughing and
Finishing Mills. We have applied our ADDvantage-32
(TM)
DC Drives and SCR
Retrofits in both 6-pulse
and 12-pulse arrangements, our AC Flux Vector
Drives and our family of Motor and Generator (MG) Set Field Regulators
for Hot Mill Upgrades. We have also applied our AC
drive family to Holding and Runout Table Applications.
Avtron
specializes in retrofits in the Hot Mill for either obsolete SCR drives
or MG set applications. Our ADDvantage-32 Advanced Firing Module can
fire up to 48 forward and 48 reverse parallel SCR bridges. It has been
designed to upgrade older drives like the General Electric Silcomatic
and the Westinghouse M4.
MG set upgrades use Avtron’s ADDvantage-32
Advanced Generator Field and Motor Field Regulators. These are
available for any size MG Set. We have also used these products for
Crop Shear and Downcoiler projects. These retrofits can be applied for
a fraction of the cost of new drives and can be easily installed with
Zero-Downtime on the Mill.
We also have experience with AC Drives
in many system designs for Holding and Runout Table applications. These
include stand-alone AC drives for multiple parallel motors and common DC
bus applications where each AC drive runs one motor and one roll. |
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Hot Strip Mill AC
System Applications |
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Plate Mills |
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Avtron ADDvantage-32
(TM)
DC Drives have also been used for upgrading Plate Mills. This product line is ideally suited
for retrofitting old Plate Mill Drive Systems because we offer a
combination of retrofit options for the Main Mill Drives and new
armature supplies for the Auxiliary Drives.
For the Main Drives, we have experience
with both MG set upgrades and SCR retrofit packages. Our ADDvantage-32
Family of drive products includes standard designs for generator field
regulators, motor field regulators, and 12-pulse, multi-parallel solid
state drive retrofits. The size of the typical auxiliary drives on these
mills is ideally suited for the compact armature drive sizes we offer.
The architecture for a Plate Mill System
typically consists of the drives communicating to both the drive PLC and
the Mill Master System. The communication is implemented using the
high-speed, fiber-optic Ethernet Network that is built
into each drive.
With this architecture, the mill rolling schedule can be easily
downloaded to the Rolling Mill drives between each pass for setting up
the mill for the next pass. |
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Zero-Downtime, Phased Plate Mill Drive Upgrade |
ADDvantage-32 (TM)
is a trademark of Avtron Industrial Automation, Inc. |
