| 摘要 |
PROBLEM TO BE SOLVED: To provide a bar steel rolling method capable of reducing the rolling load without degrading any quality of a steel material. SOLUTION: When a bar steel is manufactured by applying the finish rolling to a rolling stock after a continuously-cast bloom is roughly rolled to obtain the rolling stock for the bar steel, the rolling stock subjected to rough rolling is subjected to the cooling treatment immediately before the finish rolling, the surface temperature of the material to be rolled is adjusted to the temperature range below the Ar<SB>3</SB>point and above the M<SB>S</SB>point, and then, the rolling stock is subjected to the finish rolling before the surface temperature exceeds the Ac<SB>3</SB>point. COPYRIGHT: (C)2011,JPO&INPIT |
