Abstract Rolled sheets may turn up or down after passing the roll gap. The curling occurs under asymmetric conditions, e.g., different roll speeds, diameters, frictions, etc. Even under apparently symmetric conditions, the curling incidentally occurs in hot rolling. In this study, low carbon sheets with controlled upper and lower oxide scale were hot-rolled with 15% reduction in thickness. The rolled sheets always curled toward the side with thin oxide scale and that severe curling occurred when upper and lower oxide scales deformed differently. It is concluded that surface oxide scale is a hidden factor to cause curling in hot steel rolling.

中文翻译：

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由表面氧化皮引起的热轧钢板卷曲

摘要 卷材在通过辊缝后可能会上下翻转。卷曲发生在不对称条件下，例如不同的辊速、直径、摩擦等。即使在表面对称的条件下，卷曲也会在热轧中偶然发生。在这项研究中，控制上下氧化皮的低碳薄板被热轧，厚度减少了 15%。轧制的板材总是向氧化皮薄的一侧卷曲，上下氧化皮变形不同时，卷曲严重。结果表明，表面氧化皮是引起热轧卷曲的一个隐性因素。