熔体直纺205 dtex/192f细旦扁平涤纶的开发

介绍了熔体直纺生产205 dtex/192f细旦扁平涤纶预取向丝(POY)的工艺路线,并讨论了纺丝温度、冷却成形、上油位置及方式、卷绕工艺、喷丝板选型等对生产细旦扁平涤纶POY的影响.结果表明:选择较高的纺丝温度,严格控制环吹风条件,适当提高集束点位置,优化上油均匀性,降低纺丝速度,适当提高卷绕张力,降低成型角,可制得质量较好的细旦扁平涤纶POY.     

开发细旦涤纶短纤维的工艺控制优化

采用卷绕高速空气喂入、干法拉伸的工艺,生产细旦涤纶短纤维。通过优化生产负荷、纺丝速度、骤冷风工况、拉伸卷曲工艺等,研发出了高强高模低伸型的1.20 dtex细旦涤纶短纤维。     

32头直纺异形涤纶全拉伸丝的染色影响因素

在32头熔体直纺侧吹风纺丝卷绕设备上生产异形涤纶细旦全拉伸丝(FDY),对影响纤维染色性能的诸多因素进行分析,讨论了熔体质量、输送及纺丝温度、冷却上油、拉伸卷绕等工艺条件及日常管理对异形涤纶FDY染色性能的影响,解决了32头直纺异形涤纶FDY生产过程中存在的染色问题。     

国产高速纺丝拉伸一步法生产涤纶长丝工艺探讨

常州合成纤维厂和上海二纺机协作,采用自行仿制的KarlFishcher干燥机和上海二纺机的纺丝拉伸联合机配套,生产涤纶细旦长丝。通过对干燥、纺丝拉伸卷绕工艺摸索和试生产,认为采用现有设备工艺能生产涤纶细旦长丝。     

576f多孔涤纶预取向丝的生产工艺

采用熔体直纺工艺生产了576 f多孔涤纶预取向丝,讨论了主要的工艺条件。通过试验得出:熔体黏度为0.640 d L/g,纺丝温度为290.5℃,环吹风压为48 Pa,双油嘴上油,预网络气压为0.065 MPa,卷绕张力为25 c N的工艺条件下,可生产出质量优良的576 f多孔涤纶预取向丝。     

涤纶FDY竹节丝生产工艺探讨

介绍了涤纶FDY竹节丝的生产过程 ,探讨了切片质量、纺丝温度、侧吹风、卷绕工艺对生产FDY竹节丝的影响。结果表明 ,采用合理的干燥工艺 ,控制好纺丝温度 ,上油率 ,第一、第二热辊速度 ,可纺出质量优良的FDY竹节丝     

TCS法生产阳离子可染涤纶

探讨了用 TCS法生产阳离子可染涤纶时 ,CDP切片含水率、纺丝温度、冷却成形、拉伸等工艺参数的选择。结果表明 :采用合理的干燥工艺可获得含水率稳定在 2 0 μg/ g以内的 CDP干切片 ,纺丝系统采用两套联苯加热保温 ,降低侧吹风速度 ,提高侧吹风温度 ,热管温度为 168～ 175℃ ,卷绕速度为 4.5～ 4.8km/ min时 ,可生产出质量优良的阳离子改性涤纶长丝     

阻燃异形涤纶FDY长丝工艺探索

探讨了用TCS法生产阻燃异形涤纶长丝时,切片含水率、纺丝温度、冷却成形、拉伸等工艺参数的选择。结果表明:采用合理的干燥工艺可获得含水率稳定在18μg/g以内的阻燃干切片,1#联苯锅炉温度控制在268~270℃,2#联苯锅炉温度控制在270~272℃,热管温度为168~172℃,卷绕速度为4.4~4.6km/min时,可生产出质量优良的阻燃异形涤纶长丝。     

83 dtex/72 f大有光扁平涤纶全拉伸丝的工艺优化

为了进一步改善83 dtex/72 f大有光扁平涤纶全拉伸丝(FDY)的生产状况,达到提高满卷率、稳定生产的目的,讨论了喷丝板工艺、底部加热器温度、无风区高度、集束高度和卷绕速度对83 dtex/72 f大有光扁平涤纶FDY生产稳定性的影响.试验表明:减小喷丝板微孔的长宽比、降低卷绕速度对生产稳定性的提升影响较大;调整...     

75 dtex／49f一步法异收缩涤纶纤维的工艺研究

探讨了一步法生产异收缩涤纶纤维（ITY）的纺丝、拉伸、复合网络、卷绕工艺条件，分析了涤纶异收缩纤维的收缩率变化及其对织物绒感产生的作用。表明通过有效的工艺控制可以得到很好的起绒效果。     

Introduction of the production of vibrocast corundum and mullite-corundum burner blocks for sintering machine hearths at Western Siberia Metallurgical Combine

Conclusions At the Western Siberia Metallurgical combine there has been built a machine for vibrocasting of refractories on which the production of large heat resistant corundum and mullite-corundum burner blocks for sintering machine hearths has been introduced. The annual saving for a single sintering machine is 33,000 rubles.Translated from Ogneupory, No. 7, pp. 34–36, July, 1987.     

Automatische Seifenverpackung mit dekorativer Dehnfolie

Automatic Packaging of Soap in Decorative Elastic Foils Industrial production of luxury soaps requires a packaging which is befitting to the value of the product. A prerequisite for this is that the soap pieces must be handled carefully during packaging. For this purpose a fully automatic machine has been developed, which can be used in conjunction with elastic foils that are suitable for packaging the sensitive soaps with complex forms. The packaging machine can be adapted to various types of soap pieces and have an hourly capacity of up to 1500 pieces. The machine can also be equipped with accessories, such as labelling device and automatic transport. Only a single person is needed to operate the machine. Thus, considerable saving of personnel cost is possible.     

Oriented short glass-fiber composites. II. Analysis of parameters controlling the fiber/glycerine orientation process

Nine parameters related to the fiber/glycerine orientation process are analyzed. These parameters can be divided into machine, material and processing variables. The effect of each parameter on the cumulative percent of oriented fibers within specified angle limits (±10 deg) is discussed. Similar effects were found on an accumulative exponential function which is represented by a single empirical constant. Five parameters are shown to have major effects on the alignment which can be achieved in the mats. These parameters include: temperature of the fiber/glycerine dispersion, pressure head on the dispersion and three geometrical variables of the orientation machine.     

A spinning disk for a machine for spinning viscose fibres

Conclusions A spinning disk of the described construction ensures obtaining a viscose fibre which conforms to the requirements of technical conditions, is easily removed from the spinning machine spindle, and can be disassembled without breakage.The spinning disk construction ensures reliable and simple centering on the spinning machine spindle and ensures an insignificant wobble of the working surface relative to its axis of rotation.Translated from Khimicheskie Volokna, No. 3, pp. 50–51, May–June, 1983.     

基于单片机的PID温控系统在塑料挤出机中的应用

针对在塑料挤出过程中温度控制的重要性，介绍了一种新型的PID温度控制系统。该系统采用高性能单片机芯片，可以方便地对系统加热、冷却周期及PID的各个参数进行在线设定和修改，提高了塑料挤出机的温控精度。     

乙烯装置急冷油循环泵频繁泄露问题的根治

急冷油循环泵的机械密封频繁泄漏是困扰乙烯行业的老难题,通过分析泄露产生的根源,采用双端面干气密封技术替代传统单端面机械密封技术,对急冷油循环泵的机械密封系统进行了改造。实践证明,采用干气密封技术改造乙烯工业生产装置中的急冷油循环泵,不仅可以避免人员伤害和环境污染事故的发生,避免造成装置停车,裂解炉炉管结焦、堵塞报废等严重的经济损失事故的发生,还可以降低乙烯生产的消耗定额,为国家节约一定的能源,并创造良好的社会效益和经济效益。     

即时局部建模在填料塔液泛气速预测的应用

填料塔在工业生产中应用广泛,准确预测填料塔的液泛气速具有重要的应用价值。实际的填料类型多种多样,获取的填料数据也存在差异,单一全局模型的预测效果受到一定的限制。首先给出了岭参数极限学习机模型及其节点增加的递推算法,以有效更新在线模型。结合即时学习方式,提出了局部递推岭参数极限学习机在线建模方法,用于填料塔液泛气速的预测。实验结果表明所提出方法能更充分挖掘数据间的相关信息,预测效果优于相应的全局模型。     

TRG-3-80A三鼓式全钢丝载重子午胎一次法成型机

从整体结构和电控系统等方面的特点介绍了TRG-3-80A三鼓式全钢丝载重子午胎一次法成型机，它是为改善两鼓式一次法成型机生产效益低及产品精度和质量较差的缺陷而研制的，如果推广使用，将会将高我国高等级全钢子午线轮胎的产量和质量，并能为国家节省大量外汇。     

EFFECT OF BLOW BOXES ON EVAPORATION DURING CYLINDER CONTACT IN A PAPER MACHINE DRYER SECTION

In this paper an inexpensive configuration for a cylinder blow box (CBB) and its effect on the evaporation rate are described. The objective of this work was to determine the effect of the blow boxes on drying intensity on a paper machine. The pilot machine trials were simulated with a computer program. Based on these results two cases were simulated for a commercial paper machine with and without blow boxes on single cylinders. The results revealed that when using the blow boxes on single cylinders, the drying rate can be increased by up to 15%. The potential for using this kind of configuration is biggest at the beginning of a dryer section. A simple construction of blow boxes makes this technique useful especially in boosting the drying performance of older paper and board machines. The exhaust air from the boxes can be utilized in ventilation of dryer pockets.     

EFFECT OF BLOW BOXES ON EVAPORATION DURING CYLINDER CONTACT IN A PAPER MACHINE DRYER SECTION

ABSTRACT

In this paper an inexpensive configuration for a cylinder blow box (CBB) and its effect on the evaporation rate are described. The objective of this work was to determine the effect of the blow boxes on drying intensity on a paper machine. The pilot machine trials were simulated with a computer program. Based on these results two cases were simulated for a commercial paper machine with and without blow boxes on single cylinders. The results revealed that when using the blow boxes on single cylinders, the drying rate can be increased by up to 15%. The potential for using this kind of configuration is biggest at the beginning of a dryer section. A simple construction of blow boxes makes this technique useful especially in boosting the drying performance of older paper and board machines. The exhaust air from the boxes can be utilized in ventilation of dryer pockets.