In order to reduce yarn hairiness,a contacting wetting device between the front roller nip and guider in ring spinning frame was presented to wet the fiber strands. High speed camera was used to shoot the triangle section of water. The data shows that the device with the bigger diameter guide wheel has a longer length of water triangle contacted with the yarn. By the tests on water consumption in spinning process,the data shows the device with bigger diameter guide wheel has more water consumption when the yarn count is the same. In the meantime,the bigger yarn count would increase the water consumption during the spinning process. Under these conditions, after the observation of yarn appearance and the data comparison of the harmful hairiness,the appearance of yarns in wet spinning is obviously improved, and the harmful bobbin hairiness of combed cotton yarn(JC)of 14.6 tex and JC 19.5 tex decreases by 35.9% and 41.1% compared with ring spinning, and the cone hairiness of JC 14.6 tex reduces by 41.6% compared with ring spinning. The results show that the device with the guide wheel which could wet the fiber strand can both satisfy the good hairiness reduction effect and good yarn quality.%为减少成纱毛羽,在环锭纺细纱机前钳口与导纱钩之间加装接触式给湿装置,对出三角区后的低捻段纤维须条给湿.借助高速摄影拍摄纱线与导纱轮接触所产生的水雾三角区长度发现,导纱轮直径越大,水雾三角区长度越长.通过测试一落纱平均耗水量,纱线细度相同条件下,随导纱轮直径增大,耗水量增多;同时,纱线细度增大也会增加纺纱耗水量.在上述条件下进行纺纱试验并测试成纱毛羽,14.6 tex精梳棉管纱3 mm及以上有害毛羽较普通环锭纺降低了35.9%,19.5 tex精梳棉纱有害毛羽降低了41.1%.14.6 tex精梳棉管纱络筒后3 mm及以上有害毛羽较普通环锭纺筒纱降低了41.6%.结果表明,对环锭纺须条给湿可大幅度减少成纱有害毛羽,从而提高纱线品质.
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