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spinning yarn     
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  纺纱
     Optimizing design of two key technology parameters shows that spinning yarn quality is better when air negative pressure of profile suction pipe is 320.50×9.8 Pa and space of feeding filament and roving is 10.68 mm.
     对两个关键工艺参数的优化设计表明,当异形吸管空气负压为320. 50×9. 8Pa,喂入长丝和粗纱间距为10. 68mm时,所纺纱线质量较好。
短句来源
     Management Measures of Rotor Spinning Yarn Quality
     转杯纺纱质量管理措施
短句来源
     According to spinning consistence index,spinning yarn strength,spinning yarn integrated quality,IFQI =(Len?10)/Mic×Strwas the best chose.
     经过分析,反映纺纱均匀性指数、单纱强力、成纱综合品质可选择模型IFQI=(Len?10)/Mic×Str。
短句来源
     A Discussion on the Effect of Spinning Technology on the Quality of Rotor Spinning Yarn
     纺纱工艺对转杯纱质量影响的探讨
短句来源
     The Structure of air jet spinning yarn and the main factors which influence yarn strength including fiber properties,semi product qualities and technological parameters are introduced to improve yarn strength.
     主要介绍了喷气纺纱的成纱结构和影响其强力的因素——纤维性能、半成品质量及工艺参数,旨在找出提高成纱强力的措施。
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  细纱
     Abstract Having summed up the experience of optimum seeking NFR series top roller and apron on integration key task test machine, the writer emphasizes the adjustment importance of pre-spinningand spun yarn process,and optimum seeking roving and spinning yarn drafting process parametersimultaneously,focus on the system engineering.
     本文总结了在一条龙攻关试验机台上,配套优选NFR系列胶辊胶圈的经验,并从系统工程着眼,强调同时要做好前纺及细纱各工序整机,并同时优选粗、细纱牵伸工艺。
短句来源
     Comparison test on different accessories and different processes regarding uneveness and more fuzzy yarn of spinning yarn shows that lower CV value requires reasonable selection of drafting process,roller space,roving twist factor and good cot while lower fuzzy yarn requires reasonable selection of guiding hook,spindle,and collector plus rings and travelers.
     针对细纱条干不匀和毛羽较多的问题 ,通过选用不同器材采用不同工艺进行对比试验 ,指出要降低细纱条干CV值需合理选择牵伸工艺、罗拉隔距、粗纱捻系数和胶辊 ; 要减少细纱毛羽需合理选配导纱钩、锭子、集合器和钢领、钢丝圈。
短句来源
     By testing and experiment, effects on hairiness formation caused during the process of spinning and spinning yarn were discussed, analyzing some technical parameters affecting hairiness formation in the process of yarn fining and winding and providing some reference for decreasing yarn hairiness.
     通过试验和专题测试,探讨了纺纱原料和纺纱工艺流程中各工序影响毛羽形成的规律,分析了细纱和络筒工序影响毛羽形成的一些工艺参数,为进一步减少纱线毛羽提供一定的参考依据。
短句来源
     Conclusion is made that application the top cradle with weighting bar is of improvment of the spinning CV value,of increase of the draft multiple of spinning yarn,of increase roving feed-in,hence the roving frame efficiency.
     指出应用该器材可改善成纱条干水平,并可提高细纱总牵伸倍数,从而增加粗纱定量并提高粗纱机效率。
短句来源
     In this article, back region drafting form has been analysed and the effect of the curve drafting up-cradle on the back region drafting form is introduced. After the tests of the compact spinning yarn and the curve up-cradle drafting yarn, it is shown that the curve drafting up-cradle has an obvious effect to improve the yarn evenness of 14.6 tex yarn and 9.8 tex yarn, but the yarn evenness of 7.3 tex yarn has been deteriorated.
     对现有的细纱机后区牵伸形式进行分析,介绍了曲线牵伸上销对后区牵伸形式的影响,并对普通紧密纱和曲线牵伸上销纱线进行了测试,结果表明曲线牵伸上销对14.6tex和9.8tex的紧密纺成纱条干改善明显,但7.3tex的紧密纺成纱条干恶化。
短句来源
  
     Technology practice of 4.2 tex cotton combed spinning yarn
     4.2tex纯棉精梳的工艺实践
短句来源
     According to spinning consistence index,spinning yarn strength,spinning yarn integrated quality,IFQI =(Len?10)/Mic×Strwas the best chose.
     经过分析,反映纺均匀性指数、单强力、成综合品质可选择模型IFQI=(Len?10)/Mic×Str。
短句来源
     A Discussion on the Effect of Spinning Technology on the Quality of Rotor Spinning Yarn
     纺工艺对转杯质量影响的探讨
短句来源
     Technical and management measures to raise the quality of rotor spinning yarn
     提高转杯质量的技术与管理措施
短句来源
     Model of spinning yarn quality
     原棉成品质质量模型
短句来源
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  精梳纱
     Technology practice of 4.2 tex cotton combed spinning yarn
     4.2tex纯棉精梳纱的工艺实践
短句来源

 

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      spinning yarn
    On the other hand, the spinning yarn breaks occurs in the yarn peel-off zone in the rotor groove when continuous fibre spin-in is interrupted.
          


    The method for increasing the total draft on the cotton ringframe by using a single controlling flume is described. The total draft of the ordinary 3-line double apron system is increased to about 40 by means of an improved fiber movement control in the back draft zone (or the break draft zone as it is usually called). A flume is inserted between the second and third rollers for this purpose, and the whole mechanism remains almost unchanged exceptroller weightings and settings. The flume has an open channel...

    The method for increasing the total draft on the cotton ringframe by using a single controlling flume is described. The total draft of the ordinary 3-line double apron system is increased to about 40 by means of an improved fiber movement control in the back draft zone (or the break draft zone as it is usually called). A flume is inserted between the second and third rollers for this purpose, and the whole mechanism remains almost unchanged exceptroller weightings and settings. The flume has an open channel shape and its width varies with the count of the yarn spun. It is found that a channel width of 25 mm. is suitable for spinning yarns of 21-32 English counts. The mechanism performs well in spinning, as the properties of the yarn spun are satisfactory. The shape of the flume and its positions relative to the 2nd and 3rd rollers have great influence in spinning. It is found that the distance between the second roller center and the front edge of the flume should be within 10-12 mm., the bottom of the channel at the rear end should be leveled 2 mm. above the gripping points at the second and third rollers, while that at the front edge, 1 mm. below. So the flume should be inclined forward to the roller stand. The flume can control the fiber movement better because it gives good contact between fibers in the drafting zone, provides required inter-fiber pressures at different sections, and makes the width of the strand narrow enough after drafting so that it makes continuous drafting possible.

    本文对在棉纺精纺机上利用控制管加大牵伸倍数的可能性进行了讨论,并进行了纺纱试验。文中指出,在日东式牵伸机构的后区中,加装控制管,可使精纺机的总牵伸倍数增大至40倍左右。文中包括32支(英制)细纱的试验结果。文中第二节对控制的设计要求进行了讨论。控制管的尺寸、安装位置纺纱条件及试纺的成纱品质叙述在第三节中。第四节对控制管的作用及加控制管后牵伸区域中的摩擦力分布等进行了初步的理论探讨。文中指出,所用的控制管为直槽形,槽的宽度在2.5毫米左右,控制管须自前向后倾斜。

    This paper deals with a series of studies of structures of rotor-spun yarns.The yarns were spun on different types of spinning unit with various parameters and were compared with ring-spun yarns. The results showed that,although different types of the spinning unit and varying parameters influence the structure of the yarns spun,the basic structure and the charac-teristic of the ordinary or the normal rotor-spun yarns remained unchanged.In other words the...

    This paper deals with a series of studies of structures of rotor-spun yarns.The yarns were spun on different types of spinning unit with various parameters and were compared with ring-spun yarns. The results showed that,although different types of the spinning unit and varying parameters influence the structure of the yarns spun,the basic structure and the charac-teristic of the ordinary or the normal rotor-spun yarns remained unchanged.In other words the disadvantageous arrangement of the fibres and lack of compactness were apparent in all the yarns spun in our experiment,irrespective of the changes of parameters or spinning unit types,consequently,this may be regarded as the chief cause for the,lower strength of rotor-spun yarn in comparison with ring-spun yarn. Based upon the facts found in this experiment,methods to improve the rotor-spun yarn structure for elevating its quality were sngested.

    本文对几种不同机构及不同工艺参数的气流纺纱器所纺的纱,进行了成纱结构的试验与分析,并与环锭纱作了比较.试验结果表明,不同机构和不同工艺参数的纺纱器所纺的气流纱之间在结构上虽有差别,但是,它们在基本的结构属性上是相同的,表现出气流纱中纤维排列形态较差,结构蓬松.这就是气流纱强力一般都比环锭纱低的主要原因.同时本文根据各种纺纱器所纺气流纱与环锭纱之间的差异,结合一些理论分析,提出改进气流纱质量的一些初浅的看法,与大家共同商榷.

    An analysis is made of the external and internal configuration of jet-spun yarns,based on a great number of experiments.The results show the basic structure of jet-spun yarn is that of a fasciated yarn,i.e.the front end of most fibres wrap around the core of the yarr. In the light of those results,the mechanism of jet-spinning and some factors influencing the yarn quality have been discussed preliminarily.

    本文在大量试验的基础上初步分析了喷气纱的外形结构和内在结构,得出喷气纱基本上是由多数纤维的头端包缠在纱芯上的一种包缠形结构。同时初步探讨了它的成纱机理和影响纱条质量的若干因素。

     
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