摘要
本文探讨了从冷却吹风条件、卷绕张力、摩擦辊与膨胀芯轴间的接触压力、卷绕往复导丝器内滑块与槽筒沟槽磨损、纺丝温度及熔体挤出量的波动等因素对条干不匀率的影响。通过加强技术管理,改变由原随机抽样为分层取样法,对卷绕所有绽位每两天进行一次条干测试。并在喷丝板下100mm处加设保温插板,以防止喷丝板面温度的波动和冷却气流的干扰。侧吹风风压由仪表指示改为U形管显示,灵敏度高且直观。试验表明最佳工艺参数为:侧吹风风速0.45—0.60m/s,在纺267dtex/36f时卷绕张力为20—25cN,接触压力(背压)120—130kPa,按此工艺参数生产,条干不匀率可由1.5%降至1.1—1.2%。
The effects of the following factors, such as the condition of cooling air blowing, winding tension, the contact pressure between the friction roller and expasion shaft, spinning temperature as well as the fluctuation of the melt extrusion qantity, on the sliver unevenness have been investigated in this paper. Through the technical management, replacing the original random sampling with stratified sampling, the sliver unevennesses were tested at all the winding positions every two days, and an additional heated board was put at the position of 100mm under the spinneret so as to avoid the fluctuation of the temperature and the interference of the cooling air, the quench air pressure was indicated by U tube instead of instrument. The test results show that the optimal process parameters are: quench air speed 0.45-0.60m/s, winding tension 20—25cN for spinning 267dtex/36f and contact pressure 120-130kPa. With these attentioned above, the sliver unevenness can be decreased from 1.5% to 1.1-1.2%.
出处
《合成纤维工业》
CAS
CSCD
1989年第3期11-15,共5页
China Synthetic Fiber Industry
