片梭织造工艺的设计(摘要)

随着纺织工业新技术的发展和相关高新技术的不断引进,纺织厂使用无梭织机将越来越多,其中片梭织机具有引纬可靠性佳,品种适应性强,产品品质优,原料、备件、能源消耗低的优点,但片梭织机所需一次性投资费用高,因此用好片梭织机、充分发挥效率、加速资金回收是极为关键的。工艺设计时,由于片梭织机采用摆动式后梁和摩擦联轴器型式的自动送经装置和送纬系统,片梭织造经纱从织轴满轴到空轴经纱张力比有梭稳定,纬纱采用储纬器,使纬纱张力大且稳定,加上片梭织机采用“小开口,大张力”的工艺,总织缩率比有梭小,因此片梭织造在箱号设计中,同品种织物的箱号要适当加密。织轴轴辐的选择也要考虑梭导片的插人需要,尽量使经纱与梭导片平行,以利于减少经纱的断头。纬密牙选择时,对高密织物,由于织口动态不稳定影响,在采用手册理论计算时,也应考虑实际织口的游动,以防纬密过高,影响经济效益。     

利德:片梭行业内的"单打冠军"

位于苏州市相城区北桥镇一角的苏州利德纺织机件有限公司于1990年建厂,别看厂区规模不大,可在纺织机件行业里,这是个不容小觑的“单打冠军”.该公司的“片梭织机片梭壳体制造方法”成功获得国家的发明专利,片梭的生产规模已跃居亚洲第一.     

利德:片梭行业内的“单打冠军“

位于苏州市相城区北桥镇一角的苏州利德纺织机件有限公司于1990年建厂,别看厂区规模不大,可在纺织机件行业里,这是个不容小觑的“单打冠军“.该公司的“片梭织机片梭壳体制造方法“成功获得国家的发明专利,片梭的生产规模已跃居亚洲第一.……     

片梭织机投梭机构液压缓冲器的研究

本文建立了片梭织机投梭机构液压缓冲力的计算方程式,并举例算出缓冲力和梭子速度,算得缓冲力高达一千多公斤,它成为设计投梭机构的重要数据。     

引进织机的技术经济分析及选型

根据工程经济学的投资决策理论,结合剑杆、喷气、片梭三种织机的技术经济指标,建立了织机选型的经济判据模型,并对上述三种织机的动态回收期、净现金流量、产品成本结构及经济寿命等投资人所关心的经济指标进行了分析,以有助于对织机的选型作出正确的决策.     

片梭织造工艺的设计

本文着重就片梭织造与有梭织造在工艺设计方面不同之处进行论述，为引进片梭织机厂家用好设备提供设计参考。     

Sulzer 片梭织机送经和卷取机构分析

介绍了Ｓｕｌｚｅｒ片梭织机送经和卷取机构的结构,分析了送经和卷取的纬密范围,对消化与使用引进设备有一定的指导意义。     

圆中空夹层钢管混凝土压扭构件工作机理研究

为了对圆中空夹层钢管混凝土构件在压、扭复合受力下的工作机理进行研究,采用大型通用有限元软件ABAQUS对圆实心钢管混凝土压、扭复合受力构件进行建模计算,现有的试验验证了计算结果与计算方法的正确性.再采用同样的方法对圆中空夹层钢管混凝土构件在压、扭复合受力状态下进行了模拟计算.通过计算发现,扭矩—转角全过程关系曲线分为弹性、弹塑性、塑性强化三阶段.通过对三个阶段扭矩—转角全过程关系曲线、内外钢管和混凝土的应力分布云图、三者间相互作用力以及轴压比影响的分析,结果表明,在加载过程中,当轴压比较小时,随着轴压比的增大,极限扭矩增加;当轴压比较大时,随着轴压比增大,极限扭矩降低.     

SGT-322型储纬器

SGT-322型储纬器是为剑杆织机和片梭织机配套.其技术原理是当储纬电机开启后,驱动由绕纱盘、摆鼓等组成的卷绕储纱机械将纱从筒子上退绕卷贮到储纬鼓上,存储纱卷间有一固定间隔.储纬电机采用变频调速,体积小,性能优,其技术水平已达到当前国际同类产品水平.     

SGT-322型储纬器

SGT-322型储纬器是为剑杆织机和片梭织机配套.其技术原理是当储纬电机开启后,驱动由绕纱盘、摆鼓等组成的卷绕储纱机械将纱从筒子上退绕卷贮到储纬鼓上,存储纱卷间有一固定间隔.储纬电机采用变频调速,体积小,性能优,其技术水平已达到当前国际同类产品水平.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the