<section data-role="outer" class="article135" label="edit by 135editor"><section class="_135editor" data-tools="135编辑器" data-id="113965"><section style="margin: 20px auto;"><section style="padding-right: 5px;"><section style="display: flex;justify-content: flex-start;align-items: flex-end; transform: translateZ(10px);transform: translateZ(10px);-webkit-transform: translateZ(10px);-moz-transform: translateZ(10px);-ms-transform: translateZ(10px);-o-transform: translateZ(10px);"><section class="assistant" style="width: 35px; max-width: 35px !important;"><img class="assistant" style="vertical-align: inherit; width: 100%; display: block;" src="https://bcn.135editor.com/files/images/editor_styles/270ed76bd8373cf86f3c3af20ffb0624.gif" data-width="100%" draggable="false" data-ratio="0.37735849056603776" data-w="53"></section></section><section style="padding: 0px 9px 0px 8px; margin-top: -7px;"><section style="border-top: 1px solid rgb(249, 208, 66); background-color: rgb(255, 249, 234); padding: 25px 10px;"><section data-autoskip="1" class="135brush" style="text-align: justify; line-height: 1.75em; letter-spacing: 1.5px; color: rgb(51, 51, 51); background: transparent;"><p style="vertical-align:inherit;" hm_fix="315:272"><span style="text-decoration-style: solid; text-decoration-color: rgb(51, 51, 51); font-family: 微软雅黑, &quot;Microsoft YaHei&quot;, sans-serif;">&nbsp; &nbsp; 气流纺纱的断头主要原因是纤维在凝聚并合过程中的成纱强力弱环引起的。气流纺纱机纺杯转速很高，其离心力较大，纺杯内的负压又很高，因而纺杯内的纤维在加捻过程中所受的空气阻力也较大。当纤维束还处在棉条阶段被剥离离开凝聚槽后，由于其捻回少，所以此时其抗挠的能力很差。若纤维束的强力小于纺杯内的摩擦阻力、空气阻力及离心力所形成的张力，纱条即会产生断头。<br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; word-wrap: break-word !important; overflow-wrap: break-word !important;">&nbsp; &nbsp; &nbsp;实践证明，纺杯纱条的断头绝大多数发生在剥离点与假捻头间的棉条段。具体可分为两种：加捻前断头和加捻后断头。加捻前断头的主要原因是输送纤维至凝聚槽时，在凝聚、并合过程中纤维排列受到不同的作用力发生了破坏，出现了超前或滞后运动所引起的，重点是棉条中的的杂质，微尘，死棉束以及操作和负压的不稳定。加捻后断头主要是在捻度传递过程中，捻度的损失大，纱条的体积和捻度发生变化所引起的断头。&nbsp;</span></p></section></section></section><section style="display: flex;justify-content: flex-end;align-items: flex-end;margin-top: -12px;"><section style="background-color: rgb(249, 208, 66); display: flex; width: 36px; height: 25px; transform: skew(-15deg); max-width: 36px !important;"><section style="background-color: rgb(255, 255, 255); width: 4px; height: 100%; margin-left: 6px; overflow: hidden; max-width: 4px !important;"></section><section style="width: 4px; height: 100%; background-color: rgb(255, 255, 255); margin-left: 6px; overflow: hidden; max-width: 4px !important;"></section><section style="width: 4px; height: 100%; background-color: rgb(255, 255, 255); margin-left: 6px; overflow: hidden; max-width: 4px !important;"></section></section></section></section></section></section><section data-role="paragraph" class="_135editor"><p><br></p></section></section>