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How to Match Spindle Speed for Different Denier Yarn on False Twist Machine

How to Match Spindle Speed for Different Denier Yarn on False Twist Machine

Matching spindle speed is vital for false‑twist machine; unreasonable speed setting will cause yarn breakage, insufficient twist and deteriorated finished‑yarn performance. For coarse‑denier yarn 250D‑400D, suitable spindle speed range is 7500‑9000 rpm, taking both twist effect and continuous‑running stability into consideration. Medium‑denier yarn 100D‑200D adapts to 9000‑11000 rpm, which is the most‑common‑used speed interval for polyester textured yarn. Fine‑denier yarn 50D‑90D shall adopt relatively‑low spindle speed 11000‑12500 rpm; excessive speed will sharply lift yarn‑breakage rate. Lanxiang Machinery reminds that spindle speed shall cooperate with feeding speed and twist‑wheel parameter, not adjusted single‑sidedly. Blind pursuit of high‑speed will raise equipment loss; bearing and false‑twist‑wheel wearing‑parts consumption will increase by 41%. Too‑low spindle speed leads to insufficient twist, bad crimp effect and unqualified elastic recovery of finished yarn. For blended yarn material, reduce spindle speed by 5‑8% on the basis of pure‑polyester parameter reference. Reasonable speed‑matching scheme keeps yarn‑breakage rate below 1.1% under mass‑production condition. Parameter‑database management of different denier yarn can greatly shorten equipment‑re‑debugging time during product switching.

FAQ

Q1: What spindle speed for 250D‑400D coarse‑denier yarn? A: 7500‑9000 rpm for balanced twist‑quality and stability. Q2: What speed range for conventional 100D‑200D medium‑denier polyester yarn? A: 9000‑11000 rpm is the mainstream production interval. Q3: What risk of over‑high spindle speed for fine‑denier yarn? A: Sharp rise of yarn‑breakage rate and accelerated wearing‑parts consumption. Q4: How to adjust speed parameter for blended yarn? A: Decrease spindle speed by 5‑8% based on pure‑polyester reference value. Q5: What benefit of classified‑parameter management? A: Shorten re‑debugging time when switching different yarn specifications.

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