Record startup of new CC8 caster at voestalpine Stahl

Quick ramp-up and excellent product quality of the Danieli slab caster in Linz with 29 casting sequences in a row

In January 2015, voestalpine awarded Danieli with the order for a new high-tech slab caster to replace slab caster CC3 at the LD Stahlwerk 3 in Linz, Austria, to produce top quality grades in a flexible and competitive way.

On 18th January 2018, voestalpine and Danieli started-up the CC8 slab caster, which was installed during normal operation of the other casters.

After 5 weeks the new caster was already producing on 5 shifts, and during the first 13 weeks covered almost all the contractual steel

This is an impressive result when considering the product mix, including electrical steels with a silicon content greater than 2.0%, ULC, LC, structural steels (including micro-alloyed), press hardening grades, HC, and special steel grades (TRIP, 9% nickel). At the moment nearly 100% of exposed automotive grades are produced on CC8.

The machine, which is producing slabs with a nominal thickness of 225 mm and widths ranging from 740 mm up to 1,820 mm, is equipped with the most advanced Danieli technological packages, which in addition to quality and flexible production, ease maintenance operations, among which we mention:

> Q-MAP for complete thermal map for breakout and sticking prevention

> Q-WIDTH for fast width change during casting

> Q-LEVEL+ automatic mold level control system

> Q-COOL dynamic secondary cooling system, based upon meshless model

> Q-CORE and Q-PULSE perform dynamic soft reduction and measurement of liquid core position which guarantee top product quality

> Q-ROBOT executes 5 operations, allowing man-free tundish and lancing operations.

Danieli Rotelec in-mould and strand electromagnetic stirring devices allow consistent production of exposed grades for automotive.

Austrian voestalpine is pleased with the successful ramp-up of the caster and is looking forward to further milestones.

source: Danieli