著者

小松 芳成 後藤 正治 麻生 節夫

出版者

秋田大学

雑誌

秋田大学工学資源学部研究報告 (ISSN:13457241)

巻号頁・発行日

vol.24, pp.19-25, 2003-10-31

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Small-sized "Tatara-buki" furnace and "Oroshigane" furnace were made for laboratory working. Iron sand mined from Mukaihama beach in the city of Akita was applied to "Tamahagane" making based on combined use of the Tatara-buki process and the Oroshigane process. After washing in water and magnetic dressing, the iron sand was smelted by means of the "Tatara-buki" process and Kera (iron bear) with lower phosphorous and surfur contents was made in reproducibility of 20 % yield. The carbon content of the Kera was 2.43〜3.04 mass% which was significantly lower than that in blast furnace process. Next, the Kera was refined by the Oroshigane process to make Tamahagane which was a high quality iron containing 0.63mass%C, 0.04mass%Si, 0.048mass%S and 0.075mass%P. The microstructure of the Kera and the Tamahagane was well understood from the carbon contents. A series of the experiments mentioned above was conducted as an appropriate practice on an education program "Creative Techno-Craft" for the undergraduate course in the Department of Materials Science and Engineering, Akita University.