Folded ply yarn: unlooping, poor beam splitting, "ear" yarn, big yarn, corrugated yarn, messy edge yarn, damaged edge, sticky edge yarn; unlooping and uneven wire arrangement: incorrect process position, inappropriate winding ratio; beam splitting is too wide: tension is too large, the spacing between the clustering plate slots is too wide; messy edges of the yarn cake: the edge and the inner layer of the yarn bundle are twisted into the yarn guide eye; foreign matter in the yarn cake: crusting; broken wire: wire arrangement steel wire, clustering plate scars, excessive tension. Causes of poor beam splitting: ①, low drawing tension; ②, too small spacing between the clustering plate slots; ③, human factors in drawing: beam splitting is not separated (10 9), improper installation of the wire arrangement steel wire; big yarn
Folded big head yarn: The diameters of the two ends of the silk cake are quite different and obviously inconsistent; the cause: the center of the buncher and the center of the wire arrangement shaft are not on the same vertical line, and the offset is too large. Corrugated yarn: The surface is uneven, like a silk cake with ripples on the water surface; the cause: ①, the movement of the moving cylinder and the wire arrangement shaft is inconsistent; ②, the head belt is seriously worn; the cause of the messy edge yarn: ①, the wire drawing personnel peel the inner and outer layers of the yarn; ②, the wire drawing machine parameters (winding ratio) are chaotic; ③, the "E" spacing is small, the tension is large, and the width is too large
Folded ear yarn: ①, unwinding: the position of the wire drawing process is not appropriate (N, R)\the spacing of the clustering plate slot is too large; ②, the number of product splits is large (10---5), the yarn is soft; ③, the winding machine wire shuttle shakes seriously; ④, the edge yarn is damaged at the crease of the original silk ①, the operator uses too much force when cutting the knife wire; ②, the silk cake contacts the hanger when hanging the drum; ③, the silk cake contacts the edge of the yarn car during the drying process. Sticky yarn ①, the weight of the silk cake is too large; ②, the product combustibles are too high; ③, the paper tube has glue seepage; ④, the viscosity of the impregnation agent is high. Wool yarn ①, the oiling effect is poor; ②, the tension is large during the production process; ③, the wire arrangement and clustering device are damaged; ④, winding in; direct yarn: wool yarn, split yarn, concave and convex deformation, spider web yarn, dirty yarn, bump, yellow yarn; Hairy yarn Hairy yarn: single fibers are densely distributed on the tow, and the surface or end face of the silk cake is like a "hedgehog"; causes: ①, the product is not coated with impregnation agent; ②, the tow is not cooled well; ③, the wire drawing machine's wire arrangement box does not retreat properly (too slowly) resulting in yarn squeezing ④, the machine is involved in the operation of hairy yarn Split yarn Split yarn: one tow becomes two; causes: ①, the tow is not placed in the wire arrangement shuttle when loading; ②, the tension is too small during the drawing process and the slot jump occurs; ③, the tow jumps when the drawing machine changes the head; ④, the second-layer operator did not pay attention when loading the car, and did not put the split bundles completely into the same cluster slot; causes of concave and convex deformation yarn: ① low or high temperature of the leak plate; ② too large or too small tension ③ problem with the backward setting of the wire drawing machine Spider web yarn ① low or high temperature of the leak plate; ② too small drawing tension; ③ improper drawing parameter settings; ④ high smoothness of the impregnation agent; ⑤ the wire drawing machine's wire arrangement box retreats too fast; ⑥ The speed and parameters of the wire drawing machine are disordered; ⑦ In the case of double-part drawing, the weight difference between the inner and outer cylinders is large (leaking plate) ⑧ Shuttle wear ⑨ Abnormal position of the bunching wheel Dirty yarn ①, one or two layers of rust water droplets, splashing on the yarn; ②, wire drawing machine oil leakage (wire arrangement box); ③, cooling fins and support beams are used for too long and produce cracking, etc.; ④, the stone mill that has been wiped by the oil roller is not cleaned before loading; ⑤, other accidents are willing to cause yarn to fall; damage ① Failure to load according to regulations during loading (standard distance 3CM-5CM) ② Yellow yarn is damaged during the transfer of the yarn car ①, the drying temperature is too high; ②, the mesh of the silk cake is too large; ③, the product adhesion rate is too high; ④, the product migration is too large; VI. Handling of abnormal products Handling of wire drawing column flow, continuous hole and flash flow 1. Column flow In principle, column flow is not allowed. If local wire breakage occurs during normal wire drawing, the head should be changed immediately. If column flow is required for various reasons, fine yarn and direct yarn must be loaded and marked separately. The allowed flow rate of twisted hard yarn is less than 3%. Any excess must be loaded and marked separately. The allowed flow rate of twisted soft yarn is less than 15%, and the tex must be controlled to be qualified. Any excess must be loaded and marked separately. 2. Flash flow and continuous holes are not allowed. If flash flow and continuous holes exist, the on-site operators will mark and load these products separately.
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