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回转水纺丝法是一种制备圆形戳面光滑连续细丝的新技术．喷射速度是重要工艺参数之一．对Ｆｅ－Ｓｉ－Ｂ合金，当喷射速度过小时．只的得到缩颈状丝或粉丝历位．当喷射速度与水层速度之比Ｖｊ／Ｖｗ大于１．１９时，只能得到弯曲状细丝当Ｖｊ／Ｖｗ小于１．０６时，得到短丝．仅当Ｖｊ／Ｖｗ在１．１１—１．１６之间，才能得到光滑连续细丝．
Rotary spinning method is a kind of preparation of circular stamping surface smooth continuous filament new technology. Jet speed is one of the important process parameters. Fe-Si-B alloy, when the injection speed is too small. Only by necking silk or fan calendar. When the ratio of jet velocity to water velocity Vj / Vw is greater than 1.19, only curved filaments can be obtained. When Vj / Vw is less than 1.06, short filaments are obtained. Only when Vj / Vw is between 1.11 and 1.16 can smooth continuous filaments be obtained.