| 摘要 |
PURPOSE: A hot rolling method for preventing wear defect of down coiler side guide wear plate for stainless steel is provided to effectively prevent wear defect by spouting an aqueous graphite solution between down coiler side guide wear plates and hot bar. CONSTITUTION: In a method for hot rolling stainless hot bar(1) using a hot rolling line comprising a down coiler side guide wear plates(3) for guiding and advancing the stainless hot bar into a down coiler(2), the method comprises the steps of forming groove parts(4) having radius of curvature of 150 to 200 mm on a portion of the down coiler side guide wear plates(3) with which the edge part of the stainless hot bar is contacted, and forming a plurality of blow-off holes(5) on the groove parts; and coiling the hot bar by injecting an aqueous solution containing 30 to 40 vol.% of graphite onto the hot bar(1) through the blow-off holes at a pressure of 5 to 15 kgf/mm¬2 and supply flow rate of 2.2 to 11.1 L/min, wherein the groove parts(4) are formed with spaced apart from each other in a distance of 100 to 200 mm.
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