| 摘要 |
PURPOSE:To improve rolling workability, by subjecting molten phosphor bronze to rapid cooling under prescribed conditions so as to inhibit the development of dentritic structure, etc., and form a fine structure. CONSTITUTION:The molten phosphor bronze 1 is cooled rapidly at 10<2>-10<5> deg.C/sec cooling rate to undergo solidification. Successively, this solidified matter 11 is continuously cooled down to ordinary temp. In this way, grain size is regulated to <=50mum and the development of dendritic structure and segregation layer can be inhibited.
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