Influence of Multi-Orifice Nozzle Shape on Thickness Uniformity of Amorphous Ribbon in Single Roller Process

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  • Sato Yuichi
    Process Technology Research Laboratories, Nippon Steel Corporation
  • Yamada Toshio
    Advanced Materials & Technology Research Laboratories, Nippon Steel Corporation
  • Sato Takashi
    Advanced Materials & Technology Research Laboratories, Nippon Steel Corporation

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Other Title
  • 単ロールアモルファス薄帯の板厚の均一性に及ぼす多孔ノズル開口形状の影響
  • タン ロール アモルファス ハクタイ ノ イタアツ ノ キンイツセイ ニ オヨ

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Casting examinations by using a multi-orifice nozzle were carried out to establish a casting process for ultra-wide ribbon in the single roller process. Orifices of every nozzle used were parallelogram. The dimensions of the orifices of the nozzle were varied to examine the influence of design of the orifice of the nozzle on the uniformity in the thickness of ribbon obtained. It was found that the design of the orifices of the nozzle affected the uniformity in the ribbon thickness. The ribbon with uniform thickness was obtained by using of a nozzle consisting of orifices whose total length along the casting direction was constant across the width of the ribbon obtained. This seems to mean that a nozzle with design optimized in the present work makes the length of the melt puddle in the casting direction uniform across the width of the ribbon, which results in the ribbon with uniform thickness.

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