This measuring system consists of two triangulation
lasers of the ODS-Series and one PC. Data from the
laser systems are transmitted via a RS 422 interface to
the PC. Every 10 milliseconds the width is measured.
The data needed for slab positioning is linked within
the PC. After the complete cycling of slabs through the
width measurement all results are transmitted to the
supervisory process control system via Profibus or
Ethernet interface. Slab data is stored for 30 days so
that a subsequent analysis can be made at any time.
Billet Positioning
inside the furnace
The Laser Distance Meter measures, through the buffer
on the run-in roller table, off the billet front surface. As
high measuring rate ensures real time positioning in the furnace. By using a second Laser behind the supply table,
measuring at the foot of the billet is possible. This way
also double-row filling of short billets into the furnace
is accommodated. The Laser is protected by
appropriate cooling housing against heat damage
from the furnace.
Monitoring of material on the
roller table for automatic
positioning
The measuring system detects passing slabs on a cold
roller table after width measurement. The system tracks
the slabs on the roller table until they are pushed into a
furnace. The laser scanners (in protective housings) are
mounted beside at the roller table. The system extends
down a roller table of any length.
The devices send the measured values via an Ethernet
Interface to the measuring PC.
Slab measurement and
storage control from the
magnet crane
The measuring system consists of two laser scanners
attached to the crane cart. The laser scanners measure
across beam and along the slab(s) which hang off the
magnet. The pick up and setting down position of the
slabs is determined (in co-operation with the
warehouse-system) and also the widths and number of
slabs recorded. A safe collection of single slabs is
possible. The data from the laser scanners is processed
by an Embedded PC and passed on by Ethernet to the
supervisory stock control management system.
Slab position
measuring
With this measuring system slabs can be precisely
positioned before being pushed into furnace. The laser
system comprises 3 devices scanning devices along a
centerline 140 mm above the roller table.
When the slabs move or lie in the scan line, the
position is measured from the head and lengthways.
The raw data from the Laser Scanner (distances and
angle) are transferred to the measuring PC. The
PC evaluates the measurements and the compressed
information for the slab head and slab feed-position
will be create. With this Information the supervised
roller table control can place the slabs precisely.
Slab Width
Measurement
This slab width-measuring system consists of two laser
measuring systems which are mounted on both sides
of the roller table. The measuring systems measure on
the long edges of the slabs. By knowing the distance of
both systems to each other and the measured data the
slab width can be calculated. The evaluation takes
place either in a PC or a SPS. At evaluation it should
be noted that the slabs can diagonally pass through
whilst being measured and can have different forms.
