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Tandem cold mill, Ma’aden, Saudi Arabia

All-inclusive supply for integrated aluminum production complex

To establish itself as a major producer of aluminum hot and cold strip, joint venture Ma'aden-Alcoa built a production site in Ras Al Khair, Saudi Arabia. We supplied the main hot and cold rolling equipment plus the strip processing lines. Included in our supply scope was a four-stand tandem cold mill (TCM) in CVC® plus 4-high design with a capacity of 400,000 tpy of can-grade strip.

It's a special feature of the TCM that it operates in discontinuous mode in this first project stage. However, the mill is already prepared for conversion into a fully continuous facility, including carousel reel, in the future. Here is how the process starts: the hot strip goes into the coil preparation station of the TCM for preparation of the strip head end. Also integrated in the entry section is a double-head expanding payoff reel. It features strip centering control systems. Next in line, the mill stands incorporate CVC® plus as well as positive and negative work-roll bending systems. The high-tech actuators ensure optimal strip flatness, close thickness tolerances, and flawless surfaces. The exit-area tension reel winds the finished strip onto sleeves. Reeling completed, a coil car and pallet conveyor system transport the coil to the offline strip inspection.

All this equipment was supplied by SMS group. AluControl®, part of our X-Pact® electrical and automation program, ensures reliable rolling. It provides perfect control based on the data from the specific process sequence as well as product-oriented general information from aluminum hot and cold rolling mills.

Reference Tandem cold mill, Ma’aden, Saudi Arabia  Image Reference Tandem cold mill, Ma’aden, Saudi Arabia  Image Reference Tandem cold mill, Ma’aden, Saudi Arabia  Image Reference Tandem cold mill, Ma’aden, Saudi Arabia  Image

Layout of the Ma'aden cold rolling facility. SMS group supplied the TCM, a single-stand cold rolling mill, and a strip processing line.

Main technical data

Materials AA3xxx, 5xxx
Strip width 1,050 – 2,100 mm
Strip thickness 0.20 – 6.00 mm (entry); 0.15 – 2.00 mm (exit)
Rolling speed 1,900 m/min.
Coil weight Max. 32 t
Capacity 400,000 tpy