共查询到19条相似文献,搜索用时 203 毫秒
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探讨假捻集聚纺纱线的性能特点.测试了不同捻系数假捻集聚纱线的各项主要性能,并与同捻度的传统环锭纱线进行了对比试验分析.结果表明:捻系数为280的假捻集聚纱线.其条干CV值均比同捻系数的传统环锭纱差,而纱线的毛羽指数、断裂强度和断裂伸长率也只有在假捻器转速比适当的条伴下才好于传统环锭纱.而当捻系数为360时,假捻集聚纱线的条干CV值和断裂强度只有在假捻器转速比较低时才好于传统环锭纱,而毛羽指数和断裂伸长率则可在较大的假捻器转速比范围内优于环锭纱. 相似文献
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为更好地提高棉纤维的成纱性能,利用自主研发的假捻装置,在加装假捻装置的环锭细纱机上分别控制装置的速度、位置和纺纱方式,纺制了28.1 tex 棉纱,并对成纱质量进行了测试分析。测试结果表明:假捻器在纺纱过程中的最优转速为300 r/min,速度过大或过小都会影响纱线的强力和毛羽;假捻点与前罗拉钳口的连线和水平线之间夹角的正切值为0.7 时成纱效果最佳,假捻器的位置可改变纱路进而影响加捻三角区的大小和状态,纺纱过程中优选假捻器的合适位置有利于提高成纱质量;假捻器与斜位纺结合使用,改善了单一假捻纺纱情况下的纱线性能。 相似文献
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采用瑞士AmslerTex公司生产的花式纱装置,通过改变工艺参数,例如锭子速度、钢丝圈质量和合股捻系数等,可以在环锭细纱机上生产不同性能的83.3 tex花式股线纱.这些性能包括纱线强度、断裂强力、断裂伸长率,以及断裂功等.其中,纱线的强度和断裂强力随着钢丝圈质量的增加而增大.断裂功最大值则出现在锭速较低和钢丝圈质量较小时,而选定的合股捻系数对纱线性能的影响并不显著. 相似文献
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为提高环锭纺成纱质量,提出一种机械预捻环锭纺纱方法,并对其原理及预捻装置的方案设计进行介绍.通过纺纱试验探究了捻度对成纱强力和纱线毛羽性能的影响,并利用显微镜观察了预捻环锭纱的表面形态,同时测量了预捻环锭纺纱过程中的加捻三角区宽度,证明了预捻环锭纺的有效性.试验结果表明:机械预捻环锭纺在提高成纱强度、减少纱线毛羽方面效... 相似文献
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With the objective of reducing the hairiness of Siro spun yarns, two types of air‐jet nozzle differing in the angle of sub‐holes and suitable for an air vortex ring spinning system were designed and fabricated. The performance of the JetSiro spinning system on short staple fiber materials and the effects of the different parameters on the hairiness of JetSiro spun yarns, such as nozzle pressure of compressed air, distance between front roller nip and inlet of nozzle, and nozzle structure, were investigated using the Taguchi method. The physical properties of JetSiro spun yarns with those of conventional Siro spun yarns were compared. The results show that the parameters, air pressure and distance between front roller nip and inlet of nozzle have the strongest and weakest effect on yarn hairiness. In addition, the optimum spinning conditions were determined. The application of the air‐jet nozzle exhibits significant reductions in yarn hairiness of 40%. The results revealed no significant effect of the air‐jet nozzle on the yarn tensile properties and evenness. 相似文献
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主要阐述了纺纱速度、前罗拉钳口与第一喷嘴隔距、纺纱气压三大工艺参数对喷气纱强力的影响,通过实验确定最优的参数. 相似文献
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提高细纱条干均匀度的工艺优化配置 总被引:7,自引:3,他引:7
为了提高细纱条干均匀度,全面分析了细纱工艺与成纱条干均匀度的关系,并对影响成纱条干均匀度的关键工艺进行了优化试验.结果表明:采用较小的前区罗拉隔距、较小的钳口隔距及较大的前胶辊加压,适当增加粗纱捻系数,使用不处理软胶辊,增大胶辊直径等措施,可以提高成纱条干均匀度. 相似文献
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探讨立达环锭纺纱系统的应用技术。针对立达环锭纺纱系统设备的性能特点,开清棉工序优选各部隔距及速度,降低了筵棉棉结的增长率及短绒;梳棉工序采取优化各部隔距、适当降低刺辊速度、增大锡林刺辊的线速比等措施,加快纤维转移,减少纤维损伤;并条工艺配置中重点提高纤维的伸直度,合理设计牵伸分配和罗拉隔距;粗纱工序重点掌握好纺纱张力,合理配置工艺参数,改善粗纱内在质量;细纱采用"两大两小"针织纱工艺,并对前胶辊与中铁辊的中心距进行了优化,最终使所生产的C 14.6 tex纱的主要质量指标达到了Uster 2007公报5%水平。 相似文献
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为了了解传统和赛络纺锦纶长丝包芯纱的差异,以便更好地组织生产,对现有细纱机进行了改造,分别生产了传统和赛络纺同品种的锦纶长丝包芯纱,并对成纱质量进行了测试。对这2种包芯纱的纺纱机构、成纱质量和纺纱工艺进行了比较,指出传统包芯纱可在加装了芯丝喂入机构和预牵伸机构的细纱机上生产,赛络纺包芯纱可在加装了赛络纺装置和包芯纱装置的细纱机上纺制;赛络纺包芯纱的质量性能明显优于传统包芯纱,尤其在包覆效果、毛羽和条干均匀度方面;二者的粗纱牵伸倍数、芯丝预牵伸倍数、罗拉隔距、罗拉加压相似,但赛络纺包芯纱所采用的粗纱喂入隔距应小些,赛络纺包芯纱的捻系数比传统的低,而锭速可大些。 相似文献
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成纱毛羽的影响因素及控制措施 总被引:8,自引:6,他引:2
探讨影响环锭纺纱毛羽的因素及控制措施.通过分析纤维长度和细度,清棉、梳棉、精梳落棉,粗纱捻度.细纱锭子速度、钳口大小、钢领、钢丝圈,络筒工艺参数对成纱毛羽的影响,指出:环锭纺纱毛羽的产生与纺纱原料、工艺配置、纺纱专件使用状况等诸多因素有关,其重点在细纱和络筒.减少毛羽首先要合理配棉,控制好原料细度和短绒;合理配置前纺工艺及落棉,控制半成品短绒含量;正确选配粗纱捻系数、细纱速度、钳口等工艺参数;合理选配和使用钢领、钢丝圈;选用金属槽筒并合理配置络筒速度和张力,可使成纱毛羽得到有效的控制. 相似文献
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AbstractIn the ring-spinning process, the area between the front roller nip and twisting point is spinning triangle, and its geometry influences the fiber tension distribution in the spinning triangle directly and determines the properties of spun yarns. Therefore, in the paper, one kind of mechanical false-twisting device was introduced on the ring spinning, which can affect the twist propagation and change the spinning triangle geometry actively. First, the modification of the false-twisting device on the DTM129 ring-spinning frame was introduced. Taking the medium cotton yarn spinning as an example, corresponding ring yarn, Sirospun yarn, compact yarn were spun on the modified spinning frame under different designed twist factors, and the applicability of the false-twisting device on different spinning method was discussed. It is shown that comparing with the common yarn, the Hairiness and Strength of the modified yarns are all improved, and the effect of false-twisting device on yarn qualities is more effective for the low-twist yarn. Comparing with the ring spinning, the improvement degree of the modified compact spinning is a little smaller. Then, the long-staple cotton ring yarn, polyester and medium cotton blend ring yarn, polyester ring yarn were spun on the modified spinning frame under different designed twist factors, and the applicability of the false-twisting device on different fibers was discussed. It is shown that the influence of the false-twisting device on the long-staple cotton yarn and polyester yarn is little. That is, the false-twisting device given in the paper would be more applicable on the short fiber spinning under the low designed twist factor. 相似文献