Semi-continuous hot mill line, Ma‘aden Aluminium, 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.

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This hot rolling line is a semi-continuous 1 + 4 mill with a capacity of 650,000 tpy. It includes a four-high reversing roughing stand that applies a maximum rolling force of 40 MN and rolls incoming ingots with a thickness of up to 635 mm. The rolls in the rougher are driven by a twin drive featuring a nominal motor rating of 2 x 4,500 kW. Further downstream, the finishing mill comprises four 4-high mill stands. They roll the 30-mm-thick transfer bars in one run down to final thicknesses between 7.0 and 2.0 mm. The mill reaches a maximum rolling speed of 600 m/min and a top rolling force of 40 MN. Fully integrated here are our high-tech actuators that ensure closest strip thickness tolerances, optimal strip profile, and perfect strip surfaces. We equipped the complete rolling plant with our X-Pact® electrical and automation system. Another stand-out feature is AluControl®. It provides precise control based on the specific process sequence data plus product-oriented general information for aluminum hot and cold rolling.

Main technical data

Materials

AA5xxx; AA3xxx

Strip width

1,050 - 2,100 mm

Strip thickness

2.0 - 7.0 mm

Coil weight

32 t

Capacity

650,000 tpy

Image - Ma‘aden‘s hot and cold rolling complex
Ma‘aden‘s hot and cold rolling complex