Secondary Hardening Characteristics and Those Effects on the Wear and Thermal Shock Resistance of 5%Cr-Mo-V Steel Roll for Cold Strip Mill.

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概要

• 論文の詳細を見る

• Secondary hardening characteristics and those effects on a wear and a thermal shock resistance of the 5%Cr-2%Mo-1%V steel roll for cold strip mill were studied.The secondary hardening by a tempering was induced both by the precipitation of carbide during holding stage and by the transformation of retained austenite to a fresh martensite (FM) during the cooling stage.The increase in FM volume % raised the hardness in secondary hardening. The hardness of FM was calculated as Hv935. The wear and thermal shock resistance decreased as the volume % of FM increased. This is due to the preferential carbide precipitation on grain boundaries.On the practical viewpoint, the suitable micro-structure for the work roll is the tempered martensite containing a 20% of FM. The work roll showed an excellent wear and thermal shock resistance compared to the conventional roll tempered at low temperature.

• The Iron and Steel Institute of Japanの論文

著者

• Nakano Shozaburo

  Engineering and Construction Division, Kawasaki Steel Corp.

• Kimura Tatsumi

  Iron and Steel Research Laboratories, Kawasaki Steel Corp.

• Ishii Masatake

  Iron and Steel Research Laboratories, Kawasaki Steel Corp.

• Amano Keniti

  Iron and Steel Research Laboratories, Kawasaki Steel Corp.

• Ueda Syuzo

  Iron and Steel Research Laboratories, Kawasaki Steel Corp.

• Oka Yutaka

  Iron and Steel Research Laboratories, Kawasaki Steel Corp.

関連論文

• Secondary Hardening Characteristics and Those Effects on the Wear and Thermal Shock Resistance of 5%Cr-Mo-V Steel Roll for Cold Strip Mill.

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