ArcelorMittal Mexico has recently announces the start-up of the Hot Skin Pass Mill station, within the Hot Rolling Mill, which will contribute to improving the quality and flatness of hot-rolled steel strips. ArcelorMittal Mexico CTO Mr Jorge Nieto said “We are very happy to reach today an important step in the advancement of our new rolling mill, thanks to the latest generation technologies in terms of flatness control, our new HSM has a hot skin pass mill that allows us to guarantee our customers full compliance with the elongation tolerances of the sheet, with excellent flatness performance and high surface quality.” Flatness defects are common in the hot rolling process and are mainly characterized by waves along the length of the sheet. This waviness is caused by differences in elongation across the width of the steel strip during rolling, a defect that can be corrected through a cold process within the hot skin pass mill. In this process, the steel strip is subjected to differential elongations across the width, mostly in the narrow regions and less in the wavy regions. The result is a high-quality laminate in order to satisfy the most demanding needs of consumers, mainly in industries such as the production of containers, containers, cabinets and panels. It should be noted that one of the objectives of the new rolling mill is to produce a wide range of sheets with a final thickness of 25.4mm to a minimum of 1.2mm, required by the different industries of the Mexican market, as well as the production of high-quality steels in low carbon, ultra low carbon, high strength low alloy, API grades, etc.