<section data-role="outer" class="article135" label="edit by 135editor"><section data-id="us105848" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(34, 34, 34); letter-spacing: 0.544px; text-align: justify; font-size: 16px; border-width: 0px; border-style: none; visibility: visible; font-family: 微软雅黑; overflow-wrap: break-word !important;" class="_135editor"><section data-id="us105845" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; border-width: 0px; border-style: none; visibility: visible; overflow-wrap: break-word !important;" class="_135editor"><section label="powered by 135editor.com" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"><section data-id="us105844" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; border-width: 0px; border-style: none; visibility: visible; overflow-wrap: break-word !important;" class="_135editor"><section data-id="us158593" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; border-width: 0px; border-style: none; visibility: visible; overflow-wrap: break-word !important;" class="_135editor"><section data-id="us151103" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; border-width: 0px; border-style: none; visibility: visible; overflow-wrap: break-word !important;" class="_135editor"><p style="margin-bottom: 15px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; line-height: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; line-height: 29px; visibility: visible; overflow-wrap: break-word !important;">1、</strong><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; line-height: 29px; visibility: visible; overflow-wrap: break-word !important;">工艺优化的依据</strong></span></p></section></section></section></section></section></section><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(34, 34, 34); letter-spacing: 0.544px; text-align: justify; font-size: 16px; visibility: visible; font-family: 微软雅黑; overflow-wrap: break-word !important;" class=""><p style="margin-bottom: 20px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; text-indent: 0em; line-height: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">细纱不匀主要由随机不匀、喂入粗纱工艺流程的附加不匀、及细纱工艺流程的附加不匀三部分组成。第一部分取决于原棉质量，第二部分取决于粗纱的质量，因此要降低细纱工序的不匀，就必须降低细纱工序的附加不匀。而细纱工序的附加不匀主要是由牵伸部分造成的。</span></p><p style="margin-bottom: 20px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; text-indent: 0em; line-height: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">细纱后区牵伸的作用是承担部分总牵伸，同时为前区牵伸作准备，由于喂入的粗纱有捻度，若后区为简单罗拉牵伸，工艺配置不当，会直接影响成纱质量和正常牵伸。</span></p><p style="margin-bottom: 15px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; line-height: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">2、</strong><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">细纱后区双压力棒工艺</strong></span></p><p style="margin-bottom: 20px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; text-indent: 0em; line-height: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">在后区牵伸区内，为了有效的控制纤维，握持距以偏小为好。传统工艺采用紧罗拉隔距的方法减小握持距，罗拉隔距的减小必然会带来重加压，将会缩短工艺器材的寿命。</span></p><p style="margin-bottom: 20px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; text-indent: 0em; line-height: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">为不影响细纱工艺器材的使用寿命，提出在后区使用双压力棒，加强对纤维的控制，采用这种工艺，既有利于控制牵伸区内纤维的运动，又可避免须条在罗拉钳口下打滑，从而改善输出须条的均匀度。</span></p><p style="margin-top: 20px; margin-bottom: 20px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; line-height: 2em; text-align: left; overflow-wrap: break-word !important;" align="left"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; line-height: 2em; text-indent: 0em; overflow-wrap: break-word !important;">3、</strong><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; line-height: 2em; text-indent: 0em; overflow-wrap: break-word !important;">结束语</strong></span></p><p style="margin-top: 20px; margin-bottom: 20px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; line-height: 2em; text-align: left; overflow-wrap: break-word !important;" align="left"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;">从以上试验数据可以看出，使用后区双压力棒后，成纱条干CV%、-40细节及+35粗节明显改善。</span></p><p style="margin-bottom: 20px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; line-height: 2em; text-indent: 0em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;">3.1通过一系列试验，证明后区双压力棒对提高成纱质量有明显效果，因此进行了推广使用。有利于在不增加成本的情况下，提高成纱质量。</span></p><p style="margin-bottom: 20px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; line-height: 2em; text-indent: 0em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;">3.2在大面积上车后，个别品种出现断头较多的情况，增加了运转的劳动量。经上车检查发现是部分须条纤维牵伸不开造成的，因此必须加大力度研究在使用后区双压力棒时，粗纱捻度、细纱后区牵伸倍数的配置。</span></p><p style="margin-bottom: 5px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; line-height: 2em; text-indent: 0em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;">3.3 后区双压力棒的系列试验是在V型牵伸细纱机上进行的，在其他牵伸形式的细纱机上使用的情况还需通过进一步试验才能得出结论。</span></p></section></section>