| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method to surely obtain the scale excellent in adhesion in a high carbon hot rolled steel plate having a C content of >=0.2 wt.%. SOLUTION: A production method of a high carbon hot rolled steel plate excellent in scale adhesibility, when a high carbon hot rolled steel plate having a C content of >=0.2 wt.% is coiled to a coil shape, consists of a process, in which a steel plate after hot rolling is coiled to a coil shape at a coiling temp. of 500-600 deg.C before pearite transformation is completed, a process, in which the coiled steel plate is placed at >=500 deg.C in the atmosphere of an oxygen concentration of <=5% within 20 minutes after coiling, and a process, in which the coiled steel plate placed in the atmosphere is cooled down to 400 deg.C of the steel plate temp. at an average cooling rate of 10 deg.C/hr.
|
