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表面性状に優れた冷延鋼板の製造方法
专利权人:
株式会社神戸製鋼所
发明人:
武田 実佳子,中久保 昌平,小泉 重人,長瀬 佳之
申请号:
JP20130177048
公开号:
JP6118684(B2)
申请日:
2013.08.28
申请国别(地区):
日本
年份:
2017
代理人:
摘要:
PROBLEM TO BE SOLVED: To provide a useful method for producing a cold rolled steel sheet capable of suppressing a pickup flaw on the basis of the formation of reduced iron and even a pickup flaw on the basis of the oxidization of a steel sheet surface, and excellent in surface quality.SOLUTION: When a steel sheet is annealed in a continuous annealing furnace having a non-oxidative atmosphere following cold rolling, the annealing is performed while the vicinity of a feed roll having a temperature of 600°C or more is in the atmosphere of a gas composition having an oxygen concentration of less than 100 ppm (hereinafter, the same in a volume reference and a gas concentration) and a hydrogen concentration of 200 ppm or more and satisfying a relation of following formula (1), a hydrogen concentration (ppm)×0.04
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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