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Official startup of ThyssenKrupp Steel, Alabama, USA
Jan 31, 2011
Hot-strip rolling mill in the Thyssenkrupp Alabama plant
Hot-strip rolling mill in the Thyssenkrupp Alabama plant
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On December 10, 2010, the official opening of the new integrated works complex of ThyssenKrupp Steel USA and ThyssenKrupp Stainless USA took place in Calvert in the federal state of Alabama.
The scope of the german main supplier included a high-performance hot-strip rolling mill with an annual capacity of altogether 5.3 million t of steel strip, a
combined pickling line and tandem cold rolling mill, a continuous pickling line, an acid regeneration plant, four hot-dip galvanizing lines with two furnaces and an offline skin-pass mill.
In the stainless steel section, the supply scope included a hotstrip pickling and annealing line.
The plants and facilities will enable ThyssenKrupp Steel USA to produce a very wide range of steel strip. The main customers are the domestic appliances, construction and tube-manufacturing industries as well as the automotive industry, in particular the large carmakers in close geographical proximity in the
south of the USA.
The core component of the new plant complex is the high-performance hot-strip rolling mill with a capacity of altogether 5.3 million t of strip. The mill produces strip of high-quality steel grades, including multiphase steels and high-strength grades as well as around 1 million t of stainless steel strip each year.
The complete electrical and automation system was tested and optimized under the plug & work scheme already during the construction phase of the works. The operator training sessions were likewise able to start well ahead of commissioning and thus also contributed to a rapid run-up phase.
The pickling line/tandem cold mill is currently the most powerful of its kind, with an annual capacity of 2.5 million t. Furthermore, cold-rolled strips that are subject to particularly stringent surface-quality demands are able to run through the offline skin-pass mill.
In addition to the pickling line/tandem cold mill, 1.1 million t of hot strip can be treated in the continuous pickling line. The acid in both sections of the plant is conditioned by means of an innovatory acid regeneration plant. The hydrothermal conditioning technology is characterized by reduced emission values, high energy savings and low operating and maintenance costs.
For the further processing stages, four hot-dip galvanizing lines have been supplied to ThyssenKrupp Steel USA. The lines are designed to be highly flexible, with their annealing furnaces, coating equipment and temper mills. A very wide range of corrosion-protected strip products with tailor-made properties are manufactured on the lines.
An annealing and pickling line for the endless processing of hot-rolled stainless steel strips is part of the stainless steel complex. On this line, comprising an annealing furnace, mechanical scale breaker and the pickling section, hot strips of stainless steel grades are pre-treated for further processing in the cold rolling mill.
In addition, make sure to read these articles:
ThyssenKrupp Nirosta to extend production range
ThyssenKrupp Europe to modernize hot-strip mill in Duisburg-Beeckerwerth, Germany
ThyssenKrupp Steel Europe to modernize hot strip rolling mill in Duisburg-Bruckhausen, Germany
ThyssenKrupp Steel, Germany, to invest in hot strip production
ThyssenKrupp Metal Forming: Sale contract signed with Gestamp
Stainless steel from Germany for the “One World Trade Center”
Thyssenkrupp Metal Forming to be sold to Gestamp, Spain
Official startup of ThyssenKrupp Steel, Alabama, USA
ThyssenKrupp Steel Europe in Duisburg, Germany, to modernize continuous slab caster
Second blast furnace fired up at ThyssenKrupp CSA in Brazil
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