Improvement of Formability in Cold Rolling of Hot Band for Over 980 MPa Grade High Tensile Strength Steel Sheet

• Published in: Tetsu-to-Hagane Vol. 100; no. 5; pp. 616 - 624
• Main Authors: Kobayashi, Masanori, Doi, Kodai, Kimura, Tomofumi, Koizumi, Shigeto, Kimijima, Kazuya, Sano, Kenichi, Akamizu, Hiroshi, Morimoto, Yoshio, Ishikawa, Takashi
• Format: Journal Article
• Language: English; Japanese
• Published: The Iron and Steel Institute of Japan 2014
• Subjects: coiling temperature; cold rolling; deformation resistance; high tensile strength steel; hot rolling; internal oxidation zone

To produce high tensile strength steel sheets in cold rolling with good thickness accuracy, it is important to supply material hot bands without harmful fluctuations in their deformation resistance. For the purpose, it is effective to set a high coiling temperature in the hot rolling stage. On the o...