Line-Up of Solutions to Effectively Roll High-Quality Stainless Products
Stainless steel is characterized by high strength and an appealing finish. Various mill designs, including KZR mill, HZ mill, and 6-high Universal Crown Control Mill (UC-MILL) with small-diameter work rolls are offered in tandem or single reversing configuration, in order to achieve efficient rolling of hard stainless products. Finishing Skin-Pass Mills with large diameter work rolls are integrated into Annealing and Pickling Lines (APL) and are also available as stand-alone reversing machines.
The KZR mill is a 20-high roll cluster mill for rolling ultra-thin and/or high-strength material to the required product thickness and strip shape accuracy. Two ultra-small diameter rolls enable the rolling of special material thanks to their small roll indentation. In a conventional ZR mill, only two backing bearings (B and C) are used for shape control (AS-U system), which limits high-speed rolling with high rolling reduction. To resolve this, the KZR mill was developed, featuring a double AS-U system (A, B and C, D) and effective automatic shape control, boosting production rates for rolling high-strength material.
Revolutionizing Shape Control in Mill Rolling
The innovative KZR Double-As-U concept, developed by Sendzimir, enhances shape control in mill rolling. This design controls the secondary eccentrics of the “A” and “B” shafts together as a unit, with shafts “C” and “D” also being controlled together, offering unmatched crown-in/crown-out shape control. This feature allows for higher rolling speeds and greater production rates, making it ideal for intermediate gauge high-production rolling mills where shape meter control is crucial.
Stainless steel rolling mill stand
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