| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot-rolled steel plate having excellent rust-preventive properties secured, without needing to strictly regulate its steel content and its manufacturing process. SOLUTION: The method for manufacturing the hot-rolled steel plate having excellent rust-preventive properties by hot-rolling a raw steel material comprises the steps of; adjusting a thickness of the scale formed on the surface of the steel plate to 0.1 to 3μm by pickling; and then applying rust-preventive oil to the surface of the scale. COPYRIGHT: (C)2007,JPO&INPIT
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