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Superficial View on Stretcher-bender Leveller In-stalled before Pickling Facility

Zhou Minwen; Cheng Qilign (AISC Design and Research Institute)  
Hot rolled strip must be pickled for surface descaling of strip and have good shape prior to cold rolling. A stretcher-bender leveller installed before pickling fa-cility can repeatedly bend strip, compress and stretch to cause its surface scale to crack and even to fracture, preparing favourable interface for scale removal by pickling solu-tion and leading to full scale removal. When leveled by bend the strip is applied by a tension,under the influence of the tension and repeated leveling by bending strip is per-manently elongation deformed,improving shape of strip. As a result to add a stretcher-bender leveller to the front of pickling facility is an effective measure for raising the effi-ciency of scale removal and pickling as well as improving shape of hot rolled strip.
【CateGory Index】: TG33
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