| 摘要 |
The present invention provides an effective method for mechanically removing iron oxide films formed on surfaces of a hot rolled steel strip with a high temperature. The method comprises the steps of: maintaining a steel strip coil at a high temperature as it is at a temperature of 400° C. or more until the phase transformation is completed, after hot rolling; water-cooling the steel strip coil at a speed of at least 50° C./sec to 100° C. or less while uncoiling the coil; correcting the shape of the steel strip using a correction rolling mill; removing oxide films formed on surfaces of the shape-corrected steel strip by injecting water jets to the surface; and drying the steel strip free of oxide films and winding the steel strip. Also, the present invention provides an apparatus for carrying out this method.
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