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1.Through theoretical treatment,the authors suggest that a samlpe length of 250 meters isreasonable or taking the value of short term evenness as the total evenness of the yarn,anddeduce a formula to express he relation between the CV% of the sample L_w which is lessthan 250 meters,and the total evenness as ollows:γ=([1-((?)
本文用理论推导得出:以250m 作为试样长度,用其所测定的短片段不匀率值替代纱条总不匀率值,是合理的。 并且导出了取小于250m 长度片段L_W 时,所测定的CV%(变异系数)值占总不匀率的比率γ的关系式γ=([1-((?)收藏指正
2.The test mechanisms of capacitor evenness tester and EIB photoelectric yarn appearance tester are analyzed. The capacitor evenness tester gives out the mean volume or mass of yarn section in test scope, but the EIB photoelectric yarn appearance tester reveals the diameter variation of yarn projection area, these two methods reflect the different property of yarn evenness, and their results are not in be in accordence.
分析了电容式条干均匀度仪和EIB光电式纱线外观测试分析仪的测试原理 ,指出 :电容式条干均匀度仪测试的是测量区内一段纱条的体积或质量的平均值 ,而EIB光电式纱线外观测试分析仪测试的是纱线某一投影面上的直径变异。 两者反映了纱线条干均匀度不同的内容 ,不完全一致收藏指正
3.This paper systematically analyses the factor of the yarn evenness coefficient of variability,nip,slub and nep,and expounds the yarn spinning technology control methods on the process of spinning. The writer advances the measures on systematic control Uster Statistics of the yarn.
对成纱乌斯特统计值中的条干CV %值、细节 /km、粗节 /km、棉结 /km的影响因素进行了系统分析 ,阐述了纺纱各工序工艺的控制方法 ,对成纱质量的系统控制提出了具体措施收藏指正
4.Practice of improving Evenness CV% of Combed Cotton Knitted Yarn
降低精梳针织棉纱条干CV值的实践收藏指正
5.Via orthogonal test, optimum process parameters and application scope are defined as follows: bleaching agent 1.5g/L(active chlorine), bleaching at 30℃ for 30 minutes, pH value 5.5. The bleached linen yarn features good breaking length and evenness of size.
通过正交试验,确定新型酸性漂白剂亚麻粗纱漂白工艺的最佳工艺参数,即漂白剂浓度1.5g/L(有效氯),温度30℃,时间30min,pH值5.5。 漂白后的亚麻粗纱断裂长度和条干均较好。收藏指正
6.The experiments indicate that a reasonable choice of spinning apparatus can improve the evenness and hairiness value of the yarn.
通过试验表明合理选用纺纱器材可逐步改善成纱的条干值和毛羽值。收藏指正
7.Investigaton on Relationship between Raw Material and Strength Evenness CV% of Single Polyester Spun Yarn
涤纶短纤纱线的单强CV%值与原料的关系收藏指正
8.Detection methods of slub yarn are introduced, it is thought that an exact judge of slub yarn could be detected with capacitance evenness tester, which can be popularized.
摘要介绍了竹节纱的常用测试方法，认为电容式条干仪检测方法对竹节作出较准确的判断，此法可加以推广。收藏指正
9.Abstract: The spectrogram characteristic of cotton yarn with defects and the basic concept of relation between the spectrogram and the defective installation are described in this paper.Simultaneously ,the general method for building a specialist software system of diagnoses cotton yarn evenness defects is pointed out.
文摘:论述了纱条条干疵病在波谱图上的表现及波谱图与设备故障的关系的基本概念,提出了建立条干疵病诊断专家系统的一般方法.收藏指正
10.An Analysis of Top Roller Quality and Yarn Evenness
胶辊性质与成纱质量的试验分析收藏指正
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