Trametal rolling mill is a quarto universal reversing mill
with automatic gauge control and it is designed for production
of 400,000 tons/year.
1. Slabs
In its yard Trametal may store up to
80.000 tons.
Production process starts from steel slabs. The slabs are
flame-cut to 'daughter' slabs having the size related to the
final dimensions of the plate to be produced.
2. Reheating furnace: pusher furnace (KWAERNER) The daughter slabs are reheated in one 3 ways
pusher furnace which
operates with natural gas. The slabs slide along in 3 rows.
3. Descaling (INOXHIP) After exiting from the reheating furnace, slabs move through
descaling station for water scale removal under pressure of 220
bars.
4. Quarto reversing rolling mill (DANIELI)
Slabs are then rolled by a quarto reversing mill where they
pass forth and back between the rolls in order to reduce the
thickness. The number of passes depends on the initial thickness
of the slabs and on the dimension of the plate and it is calculated
automatically by the automation system.
Main characteristics:
- start up: february 2003
- rolling pressure: 4,000 tons
- range: 5-150 mm in thickness, up to 3,050 mm in width
Accurate thickness tolerances are guaranteed through a
sofisticated on line x-ray gauge meter.
Process
){kind=link}
){kind=link}