几种细纱质量问题的分析与解决
2018-11-21 17:49:06   来源：   评论：0 点击：

 
摘要：为了提高成纱质量，分析50 cm机械波、频繁产生的偶发性短粗节、突发性特大毛羽管纱和粗节多于棉结这4种细纱工序棘手质量疵病的具体体现及其产生的根本原因，通过更换加长上销为SX2-6833型上销、配合适宜的粗纱捻度和后区牵伸倍数、调整中上罗拉后移量以解决50 cm机械波；通过增大隔距和下胶圈张力，及时清洗并保养下胶圈、增大相对湿度，以消除频繁产生的偶发性短粗节；通过提高锭速、减少变频电机速度分段、程序调整缩短变频器速度阶升时间，以改善突发性特大毛羽管纱；注意原棉选配、梳理度、牵伸的合理分配、牵伸力与握持力的匹配，以避免粗节多于棉结问题的发生。指出：这4种问题都是由设备、工艺、器材和环境等因素综合影响造成；在生产中应注重控制宏观质量疵病的产生以及产品质量的稳定。
关键词：细纱；机械波；毛羽；偶发性短粗节；棉结；张力；隔距
中图分类号：TS104.2      文献标志码：B      文章编号：1001-9634(2018)05-0021-05
 
收稿日期：2018-02-07
作者简介：谢家祥（1974—），男，山东夏津人，工程师，主要从事纺纱工艺和质量管理方面的工作。
   
Abstract:In order to improve yarn quality,analysis is done to the concrete embodiment of four kinds of yarn defects in spinning process and the main causes including the mechanical waves of 50 cm,frequent occurrence of accidental short slub,bobbin yarn with accidental oversized hairiness and slubs more than neps.The mechanical waves of 50 cm can be solved through replacing the extended top cradle with the top cradle SX2-6833,considering the roving twist and rear zone drafting multiple,and adjustment of the posterior displacement of middle and top rollers.The frequent occurrence of accidental short slub can be solved through increasing the gauge and the tension of the bottom apron,timely cleaning and maintaining the bottom apron,and increasing the relative humidity.The bobbin yarn with accidental oversized hairiness can be solved through increasing the spindle speed,reducing the piecewise speed of converter motor,shortening the speed stepping time of the inverter by program adjustment.As to the problem of slubs more than neps is concerned,attention should be paid to the selection of raw cotton,equitable distribution of carding degree and drafting,and matching of drafting force and gripping force.It is pointed out that the four problems mentioned above are caused by factors such as equipment,process, accessories and environment.We should pay attention to the control of macroscopic defects and the stability of product quality.
Key Words:spinning;mechanical wave;hairiness;accidental short and thick;nep;tension;gauge
 
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