提高须条中纤维伸直平行度的措施
2023-02-08 14:17:11   来源：   评论：0 点击：

  关键词：伸直平行度；转移；握持；梳棉；并条；牵伸；重量法
中图分类号：TS104.25            文献标志码：A            文章编号：1001-9634(2023)01-0061-05
 
收稿日期：2022-04-19
作者简介：王学元（1969—），男，山东巨野人，工程师，主要从事棉纺技术与产品质量管理方面的研究。
   
Abstract:In order to improve the straightness and parallelism of fiber in strand and improve yarn quality，the causes of hooked fiber and fiber arrangement morphology are analyzed during fiber holding transfer，adhesion transfer and flapping transfer in the cylinder-doffer triangle area of carding process，the specific measures to improve fiber straightness and parallelism in the carding and drawing process and the rational configuration of processes are discussed.The principle，required items，operation procedure and precautions of testing fiber straightness and parallelism by gravimetric method are introduced.It is pointed out that the straightness and parallelism of the fibers in strand is an important index to measure the fiber arrangement structure in the semi-products of carding，drawing and roving.Carding process through selecting the card clothing，appropriately increasing the cylinder speed，increasing the cohere ratio，optimizing the gauge，appropriately reducing the output of carding machine，straightening out the airflow state，improving the running state of equipment，appropriately increasing the cotton mesh tension，and the drawing process through reasonable design of drafting ratio and drafting distribution，optimization of roller gauge and assurance of equipment in good condition；by mastering the odd number rule，reasonably distributing the drafting load according to the drafting type，reasonably controlling the temperature and humidity of each process and the moisture regain of semi-products and other aspects of the process to achieve reasonable configuration，fiber straightness and parallelism can be improved.Using gravimetric method to measure fiber straightness and parallelism has the characteristics of simple operation，good reproducibility and high accuracy.Taking corresponding measures according to the fiber straightness and parallelism index of semi-products in each process has remarkable effect on improving yarn quality.
Key Words:straightness and parallelism；transfer；hold；carding cotton；drawing；drafting；gravimetric method
 
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