圆盘式旋流纺纱机的工艺参数对纺纱质量的影响
摘要
圆盘式旋流纺纱是在利用喷射气流加工纱线的技术、并针对克服喷气纺纱方法所存在问题的基础上发明的一种新型非自由端纺纱方法。它以梳辊牵伸机构代替喷气纺纱中的罗拉牵伸机构,具有牵伸速度快、效率高,牵伸部件磨损小等优点。
为了了解该纺纱方法的工艺参数对纺纱质量的影响,本论文首先讨论了影响圆盘式旋流纺纱的主要工艺参数,即:芯丝细度、第一喷嘴压力、第二喷嘴压力、梳辊转速、喂棉量、棉条号数、芯丝喂入张力和芯丝退绕张力。通过前期实验发现,该方法加工长丝包芯纱性能比较稳定,所以本论文以长丝包芯纱作为评价对象,改变工艺参数纺制纱线,并对所纺纱线的强伸性能和包覆性能进行了测试。
本论文通过单因素分析的方法分别对在这些工艺参数条件下生产的长丝包芯纱的包覆性能和强伸性能做出了分析,并对其中可能有交互效应的喂棉量和棉条号数两种工艺参数作了双因素方差分析。最终得出如下结论:
1、芯丝细度为50旦的包芯纱质量明显好于芯丝细度为150旦的包芯纱质量。
2、当第一级喷嘴气压为0.30～0.35MPa,第二级喷嘴气压为0.60～0.62MPa时,所纺纱线质量较好。
3、梳辊转速6000~8000转/分,喂棉量1.695~2克/分(偏小掌握),棉条号数2~2.58克/米(偏小掌握)时,所纺纱线质量较好。另外,在纺纱实践中还要将棉条号数和喂棉量的交互作用考虑进去。
4、芯丝喂入张力在0.012~0.05N时所纺纱线可以取得较好的包覆性能和强伸性能。
5、芯丝退绕张力为0.04 ~ 0.056 N时所纺纱线可以取得较好的包覆性能和强伸性能。
6、芯丝细度为50旦时,所纺纱线的强伸性能均好于原芯丝的强伸性能。说明外包纤维承担了一部分纱线力学性能。
Disc swirl spinning is a new-type non open-end spinning process. It makes use of jet air toproduce yarn in order to resolve the matters in air-jet spinning. It substitutes roller drafting systemwith combing roller drafting system, which ensures that the drafting system of disc swirl spinninghas the advantages of high drafting speed, high drafting efficiency, little abrasion, and etc.To understand the effect of the parameters of disc swirl spinning on spinning quality, mainparameters of disc swirl spinning that would affect spinning quality had been discussed firstly.They are the size of core filament, the pressure of the first nuzzle, the pressure of the second nozzle,combing roller speed, feed quantity of cotton, sliver linear density, feed tension and unwind tensionof core filaments. Through former research, core-filaments spun yarn was chosen as evaluationobject for the reason that its spinning process was steady. The yarn was spun with variedparameters of process, and the tenacity performance, as well as the coverage performance, wastested.
The method of single-factor analysis was used to analyze the tenacity and coverageperformances of the yarn processed in the condition of different spinning parameters. And a furtheranalysis was made by double-factor analysis on two parameters,which are feed quantity of cottonand sliver linear density that maybe have interaction. Finally, results were got as following:
1、when the size of core filament is 50 denier, the quality of core yarn is distinctly better thanthat of 150 denier.
2、when the pressure of the first nozzle is 0.30～0.35MPa,and the pressure of the secondnozzle is 0.60～0.62MPa,the yarn quality is much better than those in other conditions.
3、when combing roller speed is 6000~8000 r/min,feed quantity of cotton is 1.695~2 g/min(the smaller, the better),sliver linear density is 2~2.58g/m(the smaller, the better),the yarnquality is much better than those in other conditions. Besides, the interaction of the feed quantity ofcotton and the sliver linear density must be considered in disc spinning process.
4、when feed tension of core filament is 0.012~0.05N, the yarn shows a good tenacity andcoverage performance.
5、when unwind tension of core filament is 0.04 ~ 0.056 N, the yarn shows a good tenacity andcoverage performance.
6、the tenacities of all of the disc core spun yarns are better than those of the core filaments,which shows that sheath fibers bear a part of yarn tenacity.
为了了解该纺纱方法的工艺参数对纺纱质量的影响,本论文首先讨论了影响圆盘式旋流纺纱的主要工艺参数,即:芯丝细度、第一喷嘴压力、第二喷嘴压力、梳辊转速、喂棉量、棉条号数、芯丝喂入张力和芯丝退绕张力。通过前期实验发现,该方法加工长丝包芯纱性能比较稳定,所以本论文以长丝包芯纱作为评价对象,改变工艺参数纺制纱线,并对所纺纱线的强伸性能和包覆性能进行了测试。
本论文通过单因素分析的方法分别对在这些工艺参数条件下生产的长丝包芯纱的包覆性能和强伸性能做出了分析,并对其中可能有交互效应的喂棉量和棉条号数两种工艺参数作了双因素方差分析。最终得出如下结论:
1、芯丝细度为50旦的包芯纱质量明显好于芯丝细度为150旦的包芯纱质量。
2、当第一级喷嘴气压为0.30～0.35MPa,第二级喷嘴气压为0.60～0.62MPa时,所纺纱线质量较好。
3、梳辊转速6000~8000转/分,喂棉量1.695~2克/分(偏小掌握),棉条号数2~2.58克/米(偏小掌握)时,所纺纱线质量较好。另外,在纺纱实践中还要将棉条号数和喂棉量的交互作用考虑进去。
4、芯丝喂入张力在0.012~0.05N时所纺纱线可以取得较好的包覆性能和强伸性能。
5、芯丝退绕张力为0.04 ~ 0.056 N时所纺纱线可以取得较好的包覆性能和强伸性能。
6、芯丝细度为50旦时,所纺纱线的强伸性能均好于原芯丝的强伸性能。说明外包纤维承担了一部分纱线力学性能。
Disc swirl spinning is a new-type non open-end spinning process. It makes use of jet air toproduce yarn in order to resolve the matters in air-jet spinning. It substitutes roller drafting systemwith combing roller drafting system, which ensures that the drafting system of disc swirl spinninghas the advantages of high drafting speed, high drafting efficiency, little abrasion, and etc.To understand the effect of the parameters of disc swirl spinning on spinning quality, mainparameters of disc swirl spinning that would affect spinning quality had been discussed firstly.They are the size of core filament, the pressure of the first nuzzle, the pressure of the second nozzle,combing roller speed, feed quantity of cotton, sliver linear density, feed tension and unwind tensionof core filaments. Through former research, core-filaments spun yarn was chosen as evaluationobject for the reason that its spinning process was steady. The yarn was spun with variedparameters of process, and the tenacity performance, as well as the coverage performance, wastested.
The method of single-factor analysis was used to analyze the tenacity and coverageperformances of the yarn processed in the condition of different spinning parameters. And a furtheranalysis was made by double-factor analysis on two parameters,which are feed quantity of cottonand sliver linear density that maybe have interaction. Finally, results were got as following:
1、when the size of core filament is 50 denier, the quality of core yarn is distinctly better thanthat of 150 denier.
2、when the pressure of the first nozzle is 0.30～0.35MPa,and the pressure of the secondnozzle is 0.60～0.62MPa,the yarn quality is much better than those in other conditions.
3、when combing roller speed is 6000~8000 r/min,feed quantity of cotton is 1.695~2 g/min(the smaller, the better),sliver linear density is 2~2.58g/m(the smaller, the better),the yarnquality is much better than those in other conditions. Besides, the interaction of the feed quantity ofcotton and the sliver linear density must be considered in disc spinning process.
4、when feed tension of core filament is 0.012~0.05N, the yarn shows a good tenacity andcoverage performance.
5、when unwind tension of core filament is 0.04 ~ 0.056 N, the yarn shows a good tenacity andcoverage performance.
6、the tenacities of all of the disc core spun yarns are better than those of the core filaments,which shows that sheath fibers bear a part of yarn tenacity.
引文
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[3] 郁崇文.新型纺纱技术的发展,棉纺织技术,2003,31(1):9～12
[4] 宋士杰,张俊芬.村田 No.802H 型喷气纺纱机生产包芯纱的探讨与实践,天津纺织科技,2002,40(3):35～39
[5] 章友鹤.日本村田喷气纺纱技术与产品的最新进展,现代纺织技术,2000,8(4):53～56
[6] 秦贞俊.村田 RJS 喷气纺纱技术,纺织导报,1998(1):20
[7] 查正红,于修业.喷气纱径向结构研究,中国纺织大学学报,1998,24(4):82～85
[8] Zheng, Y.C.;Yu, C.W.. Numerical Simulation of Fiber Motion in the Nozzle of an Air-Jet Spinning Machine, Sen'i Gakkaishi (Journal of the Society of Fiber Science & Technology, Japan), 2004, 60 (2): 61～64
[9] Yonenaga, Akira.Improved Air Jet Spinning Process, International Textile Bulletin, 2003, 49(4): 40～42
[10] Murugan, T..Developments in air-jet spinning system, Indian Textile Journal, 2003,113 (8):39～43
[11] Xing M., Yu C..Spinning. Methods Coming Up, Textile Asia, 2003, 34(1): 33～35
[12] Watkins P..Survey of the European Yarn and Fabric Fairs for Autumn/Winter 2003/04, Textile Outlook International, 2002, (102): 44～68
[13] Murugan T.. Air-Jet Spinning: Latest Developments, Textile Magazine, 2002, 43 (12): 49～52
[14] 肖怡安,李鸣岐.四罗拉三区牵伸机构—喷气纺技术新发展,棉纺织技术,1995,23(4):59～61
[15] 新 型 纺 纱 技 术 与 设 备 的 发 展 _ 纱 线 _ 行 业 新 闻 _ 中 国 纱 线 网 ,www.zgsxw.com/news/ReadNews.asp?NewsID=3207 21K 2004-9-18
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[17] http://www.ttmn.com/Article/Article_Show.asp?ArticleID=14888)新型纺纱技术与设备的发展,2004-4-5
[18] 王善元 主编.变形纱.上海:上海科学技术出版社,1992:348～388
[19] MengHe Miao, et al. Air interlaced yarn structure and properties. Textile Res. J, 1995,65(8): 433～440
[20] 于 修 业 , 新 型 纺 纱 原 理 , 中 国 纱 线 网 — 行 业 资 讯 — 行 业 新 闻 — 综 合 ,www.zgsxw.com/news/readnews.asp?NewsiD=4362 11K 2004-12-20
[21] 刘建中,新型纺纱设备,211.68.112.22/fsyl/f6/fsxd/9.ppt 2636K 2004-7-4
[22] Ke11er A. H.,The New Airjet OE spinning system from Japan.Int.Text.Bull.,1981;(4):407—408
[23] 王瑞,狄剑锋,平行纺、自捻纺、涡流纺和静电纺的技术分析和发展趋向,天津纺织科技.1993,(1).-51-53,50
[24] 涡流纺纱,于修业,孙松编著,纺织工业出版社,北京,1991 年 1 月第一版
[25] 于修业,喷气纺纱和涡流纺纱的产品特点及其发展,中国纺织大学学报,1990.(4):118～126
[26] 李绍友,涡流纺腈纶纱茬针织行业内的应用,针织工业,1993.(6):18～20
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