Study on Licker-In and Flat Speeds of Carding Machine and Its Effects on Quality of Cotton Spinning Process

Spinning has a significant influence on all textile processes. Combinations of all the capital equipment display the process’ critical condition. By transforming unprocessed fibers into carded sliver and yarn, the carding machine serves a critical role in the textile industry. The carding machine’s licker-in and flat speeds are crucial operational factors that have a big influence on the finished goods’ quality. The purpose of this study is to examine the link between licker-in and flat speeds and how they affect the yarn and carded sliver quality. A thorough experimental examination on a carding machine was carried out to accomplish this. The carded sliver and yarn produced after experimenting with different licker-in and flat speed combinations were assessed for important quality factors including evenness, strength, and flaws. To account for changes in material qualities and machine settings, the study also took into consideration the impact of various fiber kinds and processing circumstances. The findings of the investigation showed a direct relationship between the quality of the carded sliver and yarn and the licker-in and flat speeds. Within a limited range, greater licker-in speeds were shown to increase carding efficiency and decrease fiber tangling. On the other hand, extremely high speeds led to more fiber breakage and neps. Higher flat speeds, on the other hand, helped to enhance fiber alignment, which increased the evenness and strength of the carded sliver and yarn. Additionally, it was discovered that the ideal blend of licker-in and flat rates varied based on the fiber type and processing circumstances. When being carded, various fibers displayed distinctive behaviors that necessitated adjusting the operating settings in order to provide the necessary quality results. The study also determined the crucial speed ratios between the licker-in and flat speeds that reduced fiber breakage and increased the caliber of the finished goods. The results of this study offer useful information for textile producers and process engineers to improve the quality of carded sliver and yarn while maximizing the performance of carding machines. Operators may choose machine settings and parameter adjustments wisely by knowing the impacts of licker-in and flat speeds, which will increase textile industry efficiency, productivity, and product quality.

Study on Licker-In and Flat Speeds of Carding Machine and Its Effects on Quality of Cotton Spinning Process

Spinning has a significant influence on all textile processes. Combinations of all the capital equipment display the process’ critical condition. By transforming unprocessed fibers into carded sliver and yarn, the carding machine serves a critical role in the textile industry. The carding machine’s licker-in and flat speeds are crucial operational factors that have a big influence on the finished goods’ quality. The purpose of this study is to examine the link between licker-in and flat speeds and how they affect the yarn and carded sliver quality. A thorough experimental examination on a carding machine was carried out to accomplish this. The carded sliver and yarn produced after experimenting with different licker-in and flat speed combinations were assessed for important quality factors including evenness, strength, and flaws. To account for changes in material qualities and machine settings, the study also took into consideration the impact of various fiber kinds and processing circumstances. The findings of the investigation showed a direct relationship between the quality of the carded sliver and yarn and the licker-in and flat speeds. Within a limited range, greater licker-in speeds were shown to increase carding efficiency and decrease fiber tangling. On the other hand, extremely high speeds led to more fiber breakage and neps. Higher flat speeds, on the other hand, helped to enhance fiber alignment, which increased the evenness and strength of the carded sliver and yarn. Additionally, it was discovered that the ideal blend of licker-in and flat rates varied based on the fiber type and processing circumstances. When being carded, various fibers displayed distinctive behaviors that necessitated adjusting the operating settings in order to provide the necessary quality results. The study also determined the crucial speed ratios between the licker-in and flat speeds that reduced fiber breakage and increased the caliber of the finished goods. The results of this study offer useful information for textile producers and process engineers to improve the quality of carded sliver and yarn while maximizing the performance of carding machines. Operators may choose machine settings and parameter adjustments wisely by knowing the impacts of licker-in and flat speeds, which will increase textile industry efficiency, productivity, and product quality.

精梳工艺对混色纱纤维径向混和效果的影响

为探讨精梳工艺对涤粘混色纱纤维径向混和效果的影响,基于纤维成像法观察混纺纱横截面的纤维分布情况,建立了混纺纱横截面纤维径向混和不匀率的数学模型,采用涤粘普梳混纺工艺路线与涤粘精梳混纺工艺路线分别制备两种混纺比的涤粘混色纱,计算两种混色纱的纤维径向混和不匀率。结果表明:涤粘精梳混纺工艺能够显著提高纱线截面内的纤维径向混和均匀性;与涤粘普梳纱相比,涤/粘混纺比为65/35时,涤粘精梳混纺纱的涤纶径向混和不匀率降幅为42.88%,粘胶纤维径向混和不匀率降幅为41.91%;涤/粘混纺比为50/50时,涤粘精梳混纺纱的涤纶、粘胶纤维径向混和不匀率降幅分别为40.57%、39.55%;涤粘普梳混纺工艺对纤维混纺比的控制更加准确。

四川甲基卡地区某锂辉石矿工艺改造方案

针对四川甲基卡地区某锂辉石矿生产过程中存在回收率低的问题,首先对现场流程查定结果进行分析,并在实验室进行了试验研究,确定造成以上问题的主要原因是入选粒度偏粗、浮选机选型及配置不合理等因素造成的。针对该问题并依据该锂业选矿厂本身的实际情况,制定了增加五叠层高频振动细筛及筛上再磨系统、BF浮选机改造应用的技改方案。在尽可能不停产的情况下对该锂辉石矿进行了技术升级改造。为后续类似的矿山工艺改造提供参考。

基于PLC控制的煤矿识别卡自动装配产线设计

煤矿识别卡产品装配大部分采取人工工序分步骤装配的作业模式,在对现有的识别卡装配工艺进行调研后,总结出一套优化自动装配柔性工艺的措施,并基于此措施开发了一套基于PLC控制的识别卡自动装配产线平台,提升产品的生产效率,彻底解决识别卡产线装配产量不足的问题,极大提升煤矿产品的交付能力。通过分析煤矿识别卡产品自动装配产线平台的来料工装方案,研制了一种识别卡产品自动装配产线平台装置,提出了装配产线机械臂和气动组件装置代替或尽量减少人工作业的装配模式。通过PLC多融合自动控制的技术手段,增加了装配过程环节各工序的视觉检验过程,形成了识别卡产品自动装配产线平台和实际自动装配应用场景。

基于机器视觉技术的红外与可见光人脸图像配准

为解决某些环境图像中人脸轮廓模糊,人脸面部特征单一问题,提出基于机器视觉技术的红外与可见光人脸图像配准方法。采集红外与可见光人脸图像,对其进行直方图均衡化处理,采用Canny边缘算子方法提取人脸图像轮廓,并依据轮廓的梯度大小以及方向特征实现红外与可见光人脸图像配准。实结果表明:该方法可有效提升红外与可见光人脸图像的配准度,在无遮挡时配准度数值为0.961,在遮挡10%和20%时,配准度数值分别为0.949和0.944,由此说明该方法应用效果较为显著。

高校校园卡业务一站式服务流程设计

当前,信息化建设在高校不断深入推进,校园卡作为一项重要的智慧校园基础设施,其服务流程设计显得尤为关键。文中旨在探讨高校校园卡业务一站式服务流程的设计方案,着重分析了校园卡系统多角色服务需求、基于Core-Plus平台的流程开发和用户体验设计。此外,文中进一步讨论了流程优化策略,包括优化各类人员的校园卡申办流程、新进教师校园卡申办流程以及对流程优化前后效果的分析,以提高办理效率和用户满意度。最后,通过案例分析,展示了流程设计的具体应用与服务效能的提升,同时考虑了服务平台的数据安全与管理问题。该研究对实现高校校园卡服务的高效化和智能化具有重要的理论意义和实践价值。

联锁停电非正常接发车进路准备设计与分析

联锁是保障车站列车安全控制的重要信号系统。为了解决联锁系统故障停电状态下,办理非正常接发车作业过程中产生大量人工纸质作业和反复沟通确认作业的问题,提出一种用户通过按钮选排非正常进路、自动获取进路设备状态并生成确认表的改进方案。通过模拟联锁环境,设计系统功能与结构,开发一套能够依据真实数据独立运行的软件系统,系统同时实现将行车安全控制卡电子化的控制流程形式。相比于传统作业方式,所提方案能够减轻行车人员的劳动强度,提高非正常接发车进路的组织效率,具有一定的普适性和高效性。

基于数字化工卡的工作过程系统化课程建设研究与实践

分析综述了工作过程系统化课程设计理念内涵及研究进展、课程建设实践现状,并以H职业技术学院推行的数字化工卡课程建设为例进行经验性总结,从而提出从专业到课程的系统化实施路径。

基于多卡合一的智慧医院就诊流程再造

目的:探讨如何利用信息化技术实现基于多种卡介质的门诊、急诊、体检就诊流程再造。方法:分析目前医院门急诊流程存在的问题,基于医院信息系统、门诊医生工作站系统、排队叫号系统、实验室信息系统、影像存储与传输系统等10个系统对患者就诊流程进行再造。结果:实现患者从诊前线上预约,自助机签到,诊室挂号,自助机、手机端缴费,采血、检查登记,检验、心电报告打印全流程再造,满足门诊患者、急诊患者、体检患者持二代身份证或院内电子就诊码等多种就诊介质就诊。结论:基于多卡合一的智慧医院就诊流程再造,提升了患者就医体验,优化了患者就医流程,减少了医院运营成本。

数字化技术在电石监管业务中的应用

通过实施数字化信息化管理项目,对电石入厂、称重、卸车、检验进行全过程信息化监控。以IC卡为信息载体,实现业务联动、数据交互和信息共享,对电石业务进行全过程监控,从而达到减少人为因素,规避风险、减员增效的目的。

涡流纺涤粘色纺纱工艺优化

为了纺好涡流纺涤粘色纺纱,以纺特黑T/R 19.7 tex纱为例,详细介绍其原料指标、纺纱工艺流程;着重从梳棉采用“陆S”纺纱工艺重定量配置,并条注重改善纤维伸直平行度,涡流纺工艺参数及电清、捻接器设置要点等方面进行优化。通过优化前后成纱质量对比,表明:纺涡流纺特黑T/R 19.7 tex品种时,加强操作管理、优化工艺配置、严控温湿度,纺纱车速达500 m/min,生产效率约为98.5%,成纱质量良好。

环保转杯牛仔纱外观规律探究

为探究环保转杯牛仔纱的外观颜色规律,减少牛仔面料生产中存在的环境污染问题,以黑色粘胶条子和白色粘胶条子为原料,在双分梳转杯纺试验机上纺制黑白颜色纤维比例相同、纤维混合次数不同的双分梳转杯纺牛仔纱;详述实验方案及实验用纺纱工艺,利用MATLAB图像处理技术探索纱线外观及结构;验证不同纤维比例、不同织造工艺条件下的牛仔面料风格。指出:双分梳转杯纺牛仔纱外观颜色沿轴向间隔分布且具随机性;当黑白2种颜色的纤维比例均为50/50时,大直径转杯所纺纱线较小直径转杯所纺纱线,黑色纤维更多地分布于表面;在相同转杯周长中白色纤维比例沿纱线轴向呈先减小后增大再减小趋势;双分梳转杯牛仔纱外观颜色分布不匀是由于2种纤维在转杯中混合不均匀引起的。

基于冰冻装卡的镁锂合金零件铣削工艺参数对切削温度的影响与仿真验证

本文以镁锂合金材料的卫星机箱壳体零件为对象,研究不同铣削工艺参数加工镁锂合金壳体时冰冻装卡方式降低壳体温度效果。借助冰冻盘和红外测温仪进行镁锂合金壳体铣削加工实验,探索冰冻装卡工艺方法对镁锂合金壳体零件及切削区域的温度影响效果。结果表明,主轴转速n在1500~3500r/min、背吃刀量ap在0.3~0.7mm、进给量F在300~550mm/min的工艺参数范围内,冰冻装卡方法能有效控制镁锂合金壳体零件的加工部位和切削区域的温度,使镁锂合金壳体零件的切削加工过程零件温度和切削区域平均温度,远远低于镁锂合金材料燃点温度,显著避免加工过程中切屑燃烧的安全隐患,极大提高加工效率。该工艺方法在某卫星的陀螺仪控制壳体加工中成功应用。

PERC太阳电池退火EL石英舟卡槽印的原因排查与改善措施研究

PERC太阳电池作为目前光伏市场上的主流太阳电池产品,其良品率的稳定及提升受到了太阳电池厂家的高度重视。针对在电致发光(EL)检测时发现PERC太阳电池存在退火EL石英舟卡槽印占比异常的情况,为排查产生原因,对退火工序中使用的石英舟的各个环节进行了分析,并提供了改善措施。分析结果显示:低压石英舟饱和工艺与低压退火工艺过程中的尾气倒灌污染是退火EL石英舟卡槽印太阳电池占比异常的主要原因;通过采用优化变频真空泵设置和加装单向阀的措施,改善了退火工序中尾气倒灌的问题,将生产线退火EL石英舟卡槽印太阳电池月平均占比由0.667%~1.260%降至0.205%,有效提升了PERC太阳电池的良品率。以期为光伏行业改善退火EL石英舟卡槽印问题提供新思路和新方向。

群决策下高校辅导员考核评价体系研究

高校辅导员作为大学生成长成才的“引路人”、思政教育的“排头兵”,其职业素养和专业能力的高低与学生未来发展息息相关,对高校辅导员进行考核评价是提高其职业素养和专业能力的重要环节。当前,各高校对辅导员的考核方案不尽相同,辅导员考核缺乏相对权威、系统的考核评价体系,考核过程中存在导向不明确、体系不完善、内容不全面的问题。根据高校辅导员的工作特点,基于群决策理论分析考核主体的构成,结合辅导员工作“九项职责”内容,运用BSC理论设计考核评价指标体系,并利用AHP分析法确定考核指标的权重,为构建科学、合理的高校辅导员考核评价体系提供参考模型。

基于AHP和模糊综合评价的校园一卡通服务评价研究

研究师生用户对校园一卡通服务质量评价以期为校园一卡通改善用户体验提供参考。基于高校师生用户体验视角,结合校园一卡通服务特点以及已有成熟理论研究,构建服务评价体系,确定自身特征等3个一级指标和卡片设计等10个二级指标。利用层次分析法确定指标权重,选取郑州某高校校园一卡通服务实例并结合模糊综合评价量化评价结果。分析研究结果可知,校园一卡通所提供服务基本涵盖校园生活,用户不仅看重功能的服务质量也重视校园一卡通能否保障用户信息安全;但郑州某高校校园一卡通服务仍面临着如何拓展校园卡使用场景、提高使用效率、及时回馈用户意见以及完善校园卡支付策略等问题。

日常行为报告卡改善发展性障碍儿童课堂挑战性行为的研究

系统回顾使用日常行为报告卡对发展性障碍儿童课堂挑战性行为进行干预的核心研究,从日常行为报告卡的理论基础、实施过程与注意事项、实证研究支持三个方面进行述评、反思与展望,发现日常行为报告卡是一种有效的干预工具,可用于解决儿童的行为问题,促进积极行为的发展,能为发展性障碍儿童课堂挑战性行为干预研究提供启示和借鉴。

纺织器材专件创新助力纺纱质量升级

为了提升纺织器材专件制造水平和应用效果,通过回顾国产纺织器材专件的发展变化,分析其使用中存在产品市场定位不高、与工艺匹配不良、不按规定更换、盲目使用高效工艺、将性价比误等于“比价廉”、高端器材专件发展受限制以及管理滞后等问题存在的原因;详述国产纺织器材专件在组合技术创新运用、“三柔”工艺创新,以及上销、压力棒、集棉器、胶辊胶圈、摇架等器材专件在适纺多种纤维方面的创新。指出:国产纺织器材专件基础薄弱,某些性能相比国外先进水平仍有提升空间,其创新制造及应用,可有效提升纱线的档次和适应品种多样化的需求;纺织企业要重视技术改造,更要重视纺织器材专件的维修保养;纺织器材专件制造企业应创新研发高端产品、做好销售全过程服务,纺织企业要运用优化组合、工艺优配、技术创新等方法,充分发挥纺织器材专件功效,着力解决纺纱难题、提升纺纱质量。