| 摘要 |
PURPOSE: A method is provided which manufactures a hot rolled stainless steel sheet having superior surface quality by installing steam sprayers at the outlet side of widthwise rolling rolls and the outlet side of No. 1 rough rolling stand during the hot rolling process, thereby effectively preventing "M" shaped defects. CONSTITUTION: In a hot rolling process producing stainless, the hot rolling method for preventing surface defects during rough rolling of stainless steel comprises the step of installing steam sprayers(14) at points each of which are 2500 mm distanced from the outlet side of widthwise rolling rolls(17) and the outlet side of No. 1 rough rolling stand(18) during the hot rolling process so as to prevent "M" shaped defects generated at the No. 1 rough rolling stand(18) and the No. 2 rough rolling stand(19), thereby spraying stream onto the slab surface of up to 200 mm points of both edge parts of a stainless steel slab in a pressure of 15 to 25 kgf/cm¬2 and hurriedly building a rough structured scale layer on the rolled material before rolling a stainless steel rolled material with No. 1 rolls and No. 2 rolls of the rough rolling stands so that the stainless steel rolled material is smoothly rolled using the scale layer as a lubricating agent.
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