| 摘要 |
PROBLEM TO BE SOLVED: To obtain a band steel for a blade having a uniform and fine carbide structure by optimizing a rolling condition at each rolling in a hot rolling process providing a certain thickness by conducting first and second hot rollings, and to provide a manufacturing method of the band steel for the blade.SOLUTION: A manufacturing method of a band steel for a blade, the band steel containing, by mass%, C:0.46 to 0.72%, Si:0.15 to 1.0%, Mn:0.45 to 1.0%, Cr:12.5 to 13.9%, Mo:0 to 1.5% and the balance Fe with impurities, includes heating a material for hot rolling up to a temperature of 1,000 to 1,300°C and conducting the hot rolling including first hot rolling with a rolling finishing temperature higher than 900°C and sequential second hot rolling at a temperature less than 900°C. |
