To provide a method for manufacturing a copper iron-based alloy cast slab which can obtain the copper iron-based alloy cast slab with small segregation of iron concentration depending on positions of the cast slab even if it is solidified to be a comparatively large-sized ingot.
The newly developed method for manufacturing the copper iron-based alloy cast slab comprises mixing, melting and solidifying a material composed of 3 to 50 mass% iron, 97 to less than 50 mass% copper, and inevitable impurity. In the method, melting is carried out in a high-frequency melting furnace at 2,000 Hz or higher. Tapping is carried out to a tundish with its horizontal cross-sectional area twice as large as that of the melting furnace or larger, and the status is kept for 1-3 minutes. Thereafter, the molten metal is poured through a discharge outlet into a ladle including an electromagnetic stirring device. While the molten metal is being stirred, it is poured into a water-cooled mold and is quickly solidified at cooling speed of 100-150°C/min.
MATSUMURA TOSHIAKI
SHIMAMURA HIDERO
Masaki Yamada
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