Improvement of free solidified surface of melt spun Al-12 mass%Si alloy strips by forming roll.

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  • メルトスピニング法によるＡｌ‐１２ｍａｓｓ％Ｓｉ合金板の自由凝固面の成形ロールによる改善
  • メルトスピニングホウ ニ ヨル Al 12 massパーセント Si ゴウキン

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A forming roll was introduced in a conventional melt spinning process to improve free solidified surface of the strip. Effect of the forming roll was tested at the condition as below. Roll speed ranges from 2 to 12m/s. Roll gap is 0.2mm. Slit size is 0.8 × 20mm. Ejection gas pressure is 20kPa. Distance between nozzle and forming roll ranges from 40 to 160mm. Forming load is 98N. Specimen is Al-12 mass%Si alloy. Roll speed and nozzle-forming roll distance are the most important factors in this process. Because they affect the solidification on the free solidified surface. The flatness and microstructure of the strip can be made sound by the modified process of this study.

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