OPEN END PAMUK İPLİĞİ İLE ÇALIŞAN İĞNELERİN AŞINMASININ DEĞERLENDİRİLMESİ

Örme prosesinde, iğneler ana elemanlardır ve dilli iğneler atkılı örme makilerinde sıklıkla kullanılmaktadır. Örme kumaşların üretim kalitesi; aşınmaya neden olan lif, iplik ve iplik içerisindeki kirli malzemeler ile devamlı temas halinde olan örme iğnesinin uzun ömrüne ve kalitesine bağlıdır. Bu çalışmanın amacı, % 100 open end pamuk ipliği ile çalışıldığında örme iğnesinin kanca, pim ve topuk kısmında meydana gelen aşınmanın araştırılmasıdır. Yapılan deneysel çalışma sonucunda, iğne ilk olarak pim kısmından kırılmış ve bu esnada iğnenin başka bir yüzeyinde kırılma meydana gelmemiştir. Fakat çekilen SEM görüntüleri detaylı olarak incelendiğinde, hem iğne topuk yüzende hem de iğne kancasının iç yüzeyinde aşınmanın meydana geldiği görülmüştür ve ortaya çıkan bu aşınmanın miktarının oluşturulan ilmek sayısı arttıkça daha belirgin hale geldiği görülmüştür

Anahtar Kelimeler:

Dilli iğne, elektron mikroskobu, open-end iplik, aşınma, atkılı örme

EVALUATION OF WEAR IN NEEDLES WORKING WITH OPEN END COTTON YARN

For the knitting process, needles are the main elements and latch needles are used in large quantities in weft knitting machines. Production quality of knitted fabrics is heavily dependent on the longevity and quality of the needles and they are in contact with fibers, yarns and contaminants in the structure of the yarns which results in wear. The purpose of this research is to investigate the problem of accelerated wear on latch needle especially in hook, butt and pivot parts of the latch needle in the case of using 100% cotton open-end yarn. According to the results, the needle fractured from rivet part and there were no fractures at any place of the needle. However, with reference to the SEM views of the needles, there was wear on both needle butt and interior surface of the needle hook. Also, the wear became clear as the number of knitted courses was increased

Keywords:

Latch needle, scanning electron microscopy, open-end yarn, wear, weft knitting,

PDF

___

1. Cukul, D; Candan, C; Turan, S., 2010 "Utilizing Scanning Electron Microscopy Stereoscopy to Explain the Wear Behavior of Latch Needles" Textile Research Journal, Vol.80, No.1, pp.25-34.
2. Ward, S. G, 1986, “OE Yarn Properties Responsible for Accelerated Wear of Latch Needles”, Master thesis, North Carolina State University.
3. Thavamani, A, 2003, “Interaction of Yarn with Metallic Surfaces”, Master thesis, North Carolina State University.
4. Little T., Smith, G. and Ward S., 1986, “Latch Needle Wear with Open End Cotton Yarn”, ATI, Vol.9, pp.1-3.
5. Atasu, A., and Candan, C., 2000, “Parameters Influencing Latch Needle Wear”, Melliand Textilberichte Int. Textile Rep. Vol. 81, No.3, pp.172- 174.
6. Seidel, A. and Bühler, G., 1990, “Abrasive Knitting Element Wear Caused by Filament and Staple Fiber Yarns”, ITB Fabric Forming, Vol. 57, pp.33-46.
7. Jones J., 2001, “Abrasion Characteristics of Ring-Spun and Open-End Yarns”, Master thesis, North Carolina State University.
8. Egerton, G.S. and Fisher K.M, 1970, “Use of the Scanning Electron Microscope in a Study of the Abrasive Properties of Textile Yarns Part I: Evaluation of Wear on Latch Knitting Needles”, Textile Research Journal, Vol. 40, No.9, pp.780-784.
9. Schijve J., 2011, “Fatigue of Structures and Materials”, Kluwer Academic Publishers, Dordrecht, The Netherlands, 2011, ISBN 0-7923-7013-9 (HB).
10. Lee Y., Pan J., Hathaway R. and Barkey M., 2005, “Fatigue Testing and Analysis”, Elsevier Butterworth-Heinemann Publishers, Oxford, UK.
11. Yang X., Dong C., Shi D. and Zhang L., 2011, “Experimental investigation on both low cycle fatigue and fracture behavior of DZ125 base metal and the brazed joint at elevated temperature”, Material Science and Engineering A, Vol. 528, No.22-23, pp.7005-7011 . 12. Jian H., Jiang F., Wen, K., Jiang L., Huang H. and Wei, L., 2009, “Fatigue Fracture of High Strength Al-Zn-Mg-Cu Alloy”, Transactions of Nonferrous Metals Society of China, Vol. 19, No.5, pp. 1031-1036.
13. Egerton, G.S. and Fisher K.M, 1970, “Use of the Scanning Electron Microscope in a Study of the Abrasive Properties of Textile Yarns Part III: Mechanism of Wear on Knitting Needles”, Textile Research Journal, Vol.40, No.9, pp.788-792.