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KAWASAKI STEEL TECHNICAL REPORT
No.8 ( September 1983 )

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Development of a Low-Carbon Resulfurized Free Cutting Steel by Continuous Casting, and Its Properties

Takashi Nishimura, Soh-ichi Koishi, Yoshiji Yamamoto, Yoshinobu Wada, Kimio Mine, Yutaka Shinjo
Synopsis :
A technique for continuous casting of low-carbon resulfurized free cutting steels has been established at Mizushima Works. Inhibiting the generation of blowholes and the fusion of refractories is important in continuous casting of this type of steel. The sound blooms have been produced by the control of deoxidization and the selection of suitable refractories for this material. The features of continuous cast products are that the sulfides are not so elongated by hot rolling as those of ingot products, and they are small and uniformly distributed. Therefore, the continuous cast products are not inferior in machinability and superior in cold forgeability to conventional ones from ingots. It is expected that continuous casting will be used in the future for producing low-carbon free cutting steels, because of the excellent workability of products and energy saving and high productivity of the process.
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