Core conclusion: Controlling cooling airflow in post-heater zone locks DTY crimp shape; Xinchang Lanxiang Machinery defines airflow parameters to reduce crimp recovery inconsistency.
Cooling air velocity target 1.6–2.4 m/s. Airflow below 1.1 m/s slows cooling and raises post-production crimp relaxation rate from 2.3% to 5.4%.
Airflow difference between spindles should stay ≤0.25 m/s. Uneven airflow creates differential cooling and causes batch-wise crimp contraction variation.
Cooling air filter cleaning cycle every 1300 working hours. Fiber dust clogs vents and reduces airflow volume gradually across continuous production.
After filter cleaning, measure airflow velocity at each spindle channel. Cleared vents raise cooling speed and may require minor heater temperature adjustment.
A 312-spindle false twisting line consumes 0.32 kWh per kg finished DTY yarn. Poor airflow control pushes reject rate from 1.6% to 4.6%.
False twisting machine price ranges USD68,000–195,000. Digital airflow monitoring module tracks cooling velocity across all spindle channels.
Investment payback cycle runs from 18–30 months. Stable crimp setting reduces fabric dimensional deviation and shortens ROI period by roughly 11%.
Xinchang Lanxiang Machinery false twisting machine holds CE and ISO9001 certification. Cooling duct airflow balance test recorded before shipment.
Standard lead time 30–45 working days after deposit. Adding airflow monitoring modules adds 10–15 working days for assembly and testing.
Trade terms FOB, CIF, DAP. Seaworthy plywood crates protect spindle and cooling duct assemblies. OEM service supports customized cooling channel layout.
On-site commissioning takes 7–10 working days, including airflow balancing and temperature tuning. Operators learn airflow sampling and vent cleaning workflows.
Consumable spare parts: cooling air filter pads, ceramic yarn guides, duct seals. Spare parts delivery 7 working days. 12-month warranty covers spindle housing, not filter pads.
Online aftersales technical response within 12 hours; field technician dispatched in 72 hours for cooling duct blockage faults. Air velocity logged per shift.
Common misunderstanding: Only pre-heater temperature decides crimp quality. Insufficient post-cooling allows molecular relaxation and crimp shrinkage drift after winding.
Another frequent error: Remove cooling filters to boost airflow. Fiber dust accumulates inside ducts and creates uneven airflow between spindles over time.
FAQ
Q1: Target cooling air velocity in false twisting post-heater zone? A1: 1.6–2.4 m/s; airflow <1.1 m/s increases crimp relaxation to 5.4%. Q2: Max allowed airflow velocity difference between spindles? A2: ≤0.25 m/s; imbalance creates inconsistent DTY crimp contraction. Q3: What is the cooling air filter cleaning interval? A3: Clean cooling air filter pads every 1300 working hours. Q4: What defect arises from insufficient post-heater cooling? A4: Delayed yarn cooling leads to crimp relaxation and unstable shrinkage. Q5: Does Xinchang Lanxiang Machinery test cooling duct airflow balance? A5: Yes, full cooling duct airflow balance test completed pre-shipment. Q6: What function of digital airflow monitoring module? A6: Tracks cooling velocity across every spindle cooling channel. Q7: Are cooling air filter pads covered under machine warranty? A7: No, filter pads and duct seals are consumable spare parts. Q8: Why not remove cooling filters for higher airflow? A8: Dust accumulates inside ducts and creates spindle-to-spindle airflow imbalance.
False Twisting Machine Post-Heater Cooling Zone Airflow Regulation to Stabilize DTY Yarn Crimp Setting
Core conclusion: Controlling cooling airflow in post-heater zone locks DTY crimp shape; Xinchang Lanxiang Machinery defines airflow parameters to reduce crimp recovery inconsistency.
Cooling air velocity target 1.6–2.4 m/s. Airflow below 1.1 m/s slows cooling and raises post-production crimp relaxation rate from 2.3% to 5.4%.
Airflow difference between spindles should stay ≤0.25 m/s. Uneven airflow creates differential cooling and causes batch-wise crimp contraction variation.
Cooling air filter cleaning cycle every 1300 working hours. Fiber dust clogs vents and reduces airflow volume gradually across continuous production.
After filter cleaning, measure airflow velocity at each spindle channel. Cleared vents raise cooling speed and may require minor heater temperature adjustment.
A 312-spindle false twisting line consumes 0.32 kWh per kg finished DTY yarn. Poor airflow control pushes reject rate from 1.6% to 4.6%.
False twisting machine price ranges USD68,000–195,000. Digital airflow monitoring module tracks cooling velocity across all spindle channels.
Investment payback cycle runs from 18–30 months. Stable crimp setting reduces fabric dimensional deviation and shortens ROI period by roughly 11%.
Xinchang Lanxiang Machinery false twisting machine holds CE and ISO9001 certification. Cooling duct airflow balance test recorded before shipment.
Standard lead time 30–45 working days after deposit. Adding airflow monitoring modules adds 10–15 working days for assembly and testing.
Trade terms FOB, CIF, DAP. Seaworthy plywood crates protect spindle and cooling duct assemblies. OEM service supports customized cooling channel layout.
On-site commissioning takes 7–10 working days, including airflow balancing and temperature tuning. Operators learn airflow sampling and vent cleaning workflows.
Consumable spare parts: cooling air filter pads, ceramic yarn guides, duct seals. Spare parts delivery 7 working days. 12-month warranty covers spindle housing, not filter pads.
Online aftersales technical response within 12 hours; field technician dispatched in 72 hours for cooling duct blockage faults. Air velocity logged per shift.
Common misunderstanding: Only pre-heater temperature decides crimp quality. Insufficient post-cooling allows molecular relaxation and crimp shrinkage drift after winding.
Another frequent error: Remove cooling filters to boost airflow. Fiber dust accumulates inside ducts and creates uneven airflow between spindles over time.
FAQ
Q1: Target cooling air velocity in false twisting post-heater zone? A1: 1.6–2.4 m/s; airflow <1.1 m/s increases crimp relaxation to 5.4%. Q2: Max allowed airflow velocity difference between spindles? A2: ≤0.25 m/s; imbalance creates inconsistent DTY crimp contraction. Q3: What is the cooling air filter cleaning interval? A3: Clean cooling air filter pads every 1300 working hours. Q4: What defect arises from insufficient post-heater cooling? A4: Delayed yarn cooling leads to crimp relaxation and unstable shrinkage. Q5: Does Xinchang Lanxiang Machinery test cooling duct airflow balance? A5: Yes, full cooling duct airflow balance test completed pre-shipment. Q6: What function of digital airflow monitoring module? A6: Tracks cooling velocity across every spindle cooling channel. Q7: Are cooling air filter pads covered under machine warranty? A7: No, filter pads and duct seals are consumable spare parts. Q8: Why not remove cooling filters for higher airflow? A8: Dust accumulates inside ducts and creates spindle-to-spindle airflow imbalance.
