Hot-dip galvanizing line no. 4 at voestalpine Stahl, Austria
Hot dip galvanizing line for latest high-strength steel
The furnace in hot-dip galvanizing line no. 4 enables the customer to manufacture the latest high-strength steel grades and galvanize the strip with the best surface quality. ANDRITZ METALS supplied the mechanical equipment for the entire strip transport. The capacity is around 450,000 tons per annum, with a maximum speed of 350 m/min.
Furnace section
The furnace of the hot dip galvanizing line no. 4 at voestalpine Linz enables the customer to manufacture the latest highstrength steel grades and to galvanize the strip with the best surface quality. This is achieved by a new concept of a direct heated furnace which permits extremely exact atmosphere. The radiant tube section is equipped with the proven on-off technology with low-pollution burners. In the cooling section the differential rapid jet cooling technology – DRJC – is installed. This fast cooling section sets new standards through highest cooling rates with constant and controlled cooling across the strip width.
| Technical data of the line | |
| Line capacity | 450,000 tons per year |
| Strip thickness | 0.4-2.0 mm |
| Strip width | 750-1,750 mm |
| Coil weight | max. 35 t |
| Entry section speed | max. 300 m/min |
| Process section speed | max. 220 m/min |
| Exit section speed | max. 350 m/min |
| Steel grades | CQ, DQ, DDQ, EDDQ, HSLA, CP, TRIP |
| Zinc coat weight | total 60-350 g/m² |
