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In this paper,technology of blended various length staple fibers processing together was studied,60Nm ramie/vinylon/polyester/cotton fibers blended yarn was formed on the roving frame by mixing the cotton/polyester short fibers slivers and ramie/vinylon long fibers slivers together.

通过对长短纤维纺纱的工艺路线及关键工序的生产技术进行研究和创新,在苎麻粗纱机上将涤/棉短纤维条与麻/维长纤维条进行复合,纺出60Nm麻/维/涤/棉长短纤维复合纱。

The causes of scratch on the bottom surface of sheet,long or short length of shearing were analyzed,and the corresponding improvement measures were put forward.

介绍了宝钢热轧薄板生产线D1型飞剪的主要特点、基本结构和工作原理;重点分析了该飞剪在使用中存在钢板下表面划伤、剪切长短尺等问题的产生原因,并提出了相应的改进措施。