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Experimental Procedure for Warm Spinning of Cast Aluminum Components
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A Numerical and Experimental Study on a Pre-Twisted Ring Spinning System.

Keyi Wang1,2, Wenliang Xue3,4, Longdi Cheng5,6

  • 1Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China. kywang@dhu.edu.cn.

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|April 11, 2019
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Summary
This summary is machine-generated.

This study enhances ring spinning productivity by adding a pre-twister, increasing output by 30% for cotton yarns. Modifications improve fiber structure, potentially reducing yarn properties slightly.

Keywords:
CFDnozzlepre-twisterproductivityring spinningyarn properties

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Area of Science:

  • Textile Engineering
  • Fluid Dynamics

Background:

  • The ring spinning process is dominant in textile manufacturing.
  • Rising labor costs necessitate increased productivity in spinning.

Purpose of the Study:

  • To investigate modifications for enhancing ring spinning productivity.
  • To analyze the impact of a pre-twister and holding roller on yarn formation.

Main Methods:

  • Computational Fluid Dynamics (CFD) simulations were used to model airflow.
  • Spinning tests were conducted to validate simulation results.

Main Results:

  • Pre-twister parameters like cavity conical degree and nozzle count significantly influence airflow and yarn twist.
  • Axial and tangential nozzle angles have minimal impact on resultant yarn twist.
  • Fiber bundles gain a strengthened structure from pre-twister vortex, allowing less subsequent twisting.

Conclusions:

  • Adding a pre-twister and holding roller can increase ring spinning productivity by up to 30% for medium cotton yarns.
  • This modification results in a slight, acceptable decrease in yarn properties.