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A Study of the Scale Structure of Hot-Rolled Steel Strip by Simulated Coiling and Cooling

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Abstract

The morphological development of oxide scale on hot-rolled steel strip under various simulated coiling and cooling conditions was investigated. Oxide-scale structures developed were classified into several categories, and the conditions under which each category formed were identified and mapped. It was found that oxide scale formed under normal coiling and cooling conditions had a structure that was difficult to pickle. Increased cooling rate after coiling, or coiling at a temperature below 350°C, improved this structure. The conditions under which a magnetite layer at the wüstite–steel interface was formed during continuous cooling were also identified and the mechanisms of its formation discussed.

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  1. BHP Steel Research Laboratories, PO Box 202, Port Kembla, New South Wales, 2505, Australia

    R. Y. Chen & W. Y. D. Yuen

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  1. R. Y. Chen
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  2. W. Y. D. Yuen
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Chen, R.Y., Yuen, W.Y.D. A Study of the Scale Structure of Hot-Rolled Steel Strip by Simulated Coiling and Cooling. Oxidation of Metals 53, 539–560 (2000). https://doi.org/10.1023/A:1004637127231

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