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This study deals with the influences of the modified elements of spinning mechanism, spinning speed (8000 rpm, 9000 rpm, 10000 rpm), twist multiplies (αe3.0~8.5) and yarn count (Ne8's ~24's ) on the physical proporities of yarn strength, yarn elongation, twist (tpi) and their coefficient of variations in the ring spinning of 100% stainless fibers. The yarn breaks witch results from the uneven distribution in spinning triangle and worse fibers cohesion are caused, by the limitation of the mechanical design, the shaking of the frame while the fibers are twisted, the unstable ballon formation and the great variation of yarn tension, when spinning of 100% stainless fibers and the ordinal ring spinning frame is used. The reasons are because stainless fibers has higher bending as well as torsional rigidity, lower elongation, less crimps, worse fibers cohesion and higher cofficient variation of fibers length. During the yarn formation , the friction between the fibers and traveller is very high. This leads to the traveller wear and increase the friction drag in the spinning process. In order to overcome the above mentioned problems, a new stabilizer and oil device were constructed and mounted to the ring spinning frame. The experimentals were carried on by using the roving of stainless fibers with width and length of 8μm×50mm/1000k respectively as raw material. The results show that the yarn breaking strength increase 12~30% the yarn breaking elongation increase 0.1~0.2% and the coefficient variation reduced while the new stablizer and oil device was used. Meanwhile, it can also long then the life of traveller and decrease variation of the number. of yarn cross section
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