烟企物流系统中积放控制技术的研究与应用

针对物流输送系统中关键技术——积放控制进行实践研究,提出一种更为方便、实用的积放控制方法,给出相关控制原理及控制程序,并与现有积放控制技术进行相关性能对比。实践证明,该积放控制方法应用于链条输送机的控制,能够有效降低系统硬件成本,具有稳定性高、适应范围广以及调试方便等优势。     

整车涂装车间前处理电泳线输送形式的对比研讨

介绍了整车涂装车间前处理电泳线现有积放式悬挂输送机、摆杆链输送机的应用情况,同时介绍了RoDip输送机,并对3种输送形式进行了对比研讨。     

篦冷机弧形阀中控显示放料曲线及其作用

<正>篦冷机弧形阀放料运行的好坏不仅影响到熟料的冷却,还影响熟料的质量以及篦冷机的安全运行。由于我公司万吨线篦冷机采用悬摆传动方式,对灰斗积料的要求更高。试生产期间,多次发生因弧形阀放料不正常物料堆积,致使篦冷机悬摆传动倾斜造成回转窑停机的事故。     

东营凹陷胜坨南部沙三中亚段浊积体系研究

胜坨南部沙三段沉积中发育有大量的浊积砂体,它们构成了完整的浊积岩体系。广泛发育的浊积岩为周围可作为良好生油层和盖层的深水暗色泥岩所包围,成藏条件优越。因此,我们对东营凹陷胜坨南部沙三中浊积岩体系进行了精细地质研究。在井震结合建立研究区地层格架的基础上,结合钻井、测井资料,对该区大量发育的如坨74、坨143浊积砂体作了统层划分,在此基础上,明确了该区浊积砂体的空间展布特征。结果表明,胜坨南部沙三中浊积岩的砂体展布主要受来自北部陈家庄凸起和东部东营三角洲两大物源控制,此外,古地貌对浊积岩砂体展布也有一定程度的影响。通过浊积岩砂体展布特征和沉积模式的进一步明确,为今后的浊积岩隐蔽油气藏勘探提供了借鉴意义。     

瓷件尺寸控制的最新研究

通常我们是通过收缩放尺来控制瓷件尺寸，试验说明，控制光坯体的压实密度能很好地控制瓷件尺寸。     

层序约束下的储层预测及属性优化方法研究

埕岛东斜坡含油气层系主要集中在下第三系东营组Ⅳ砂组,储集类型为水下浊积扇体,储层识别难度大,影响了勘探进程。本文根据斜坡带浊积扇体在层序格架下的沉积特点,从宏观上控制储层的空间分布,结合层序约束,进行属性聚类分析和属性优选,建立属性与地质体岩性、物性之间的联系模式,进行有效的储层预测,取得了较好的效果。     

车西地区沙四下红层油藏成藏特征分析

济阳坳陷车西地区沙三段浊积扇体是岩性、构造一岩性油气藏发育的有利区带。该区浊积扇体的成藏与储层物性有密切的关系,在不同类型浊积扇体分类的基础上,进一步结合物性定量分析,总结出不同类型扇体的物性特征及其对油气运移效能的影响规律,可对该区沙三段浊积扇体油气藏勘探有一定的指导意义。     

水道型浊积扇“断肠状”成藏模式研究——以渤南洼陷沙三下为例

充分运用地震、测井、录井、岩心等资料,通过不整合面、进积-退积转换面和洪泛面等转换面建立了渤南洼陷沙三下亚段高精度等时地层格架。通过岩心观察和平面相分析发现工区内主要发育水道型浊积扇沉积,扇体又分为水道和漫溢两个亚相,具有垂直断层推进和顺断层散开、多期扇体叠合连片的特征;储层展布受多条东西向断层和南北向沟道控制,砂体成分成熟度和结构成熟度都较低,但是目的层段存在的异常高压通过抑制成岩作用、削弱压实作用、增强溶蚀作用改善了储层物性;加之水道砂体被众多次级断层切割,形成构造一岩性油气藏和岩性油气藏,在此基础上,提出了水道型浊积扇"断肠状"成藏模式。     

一种塑料板抓取输送机构的工作方法

正本发明公开了一种塑料板抓取输送机构的工作方法,塑料板抓取输送机构包括放料桶体和输送架,输送架处于放料桶体的右侧处,放料桶体的中部具有放料内腔,放料内腔的内侧壁上设有竖直通槽,放料桶体的下部外侧壁上固定有提升气缸,提升气缸的推杆的端部     

基于火积耗散热阻的内置双旋线换热管性能研究

基于换热器火积耗散热阻理论,采用三维数值模拟计算方法,以水为流动介质,分别对内置双旋线外径为9mm、12mm、15mm、18mm的换热管的管内流场和火积耗散热阻进行研究,分析了内置双旋线换热管的传热和流动特性,结果表明：内置双旋线换热管内流体呈现三维螺旋状流动,管壁面附近周向和径向速度明显增强,从而中心区域流体和壁面附近流体充分混合;内置双旋线换热管的换热量与其积耗散热阻相对应,积耗散热阻越小,换热量越大;内置双旋线换热管的积耗散热阻随着雷诺数的增大而减小;内置双旋线换热管的协同性均优于光管,说明内置双旋线换热管具有良好的综合换热性能.     

普通冷轧钢板与镀锌板车身共线硅烷表面处理技术研究及应用

将以普通冷轧钢板为主材的车身导入镀锌板车身硅烷处理生产线上后,普通冷轧钢板车身出现了大面积的前处理、底漆质量问题。通过配方调整和工艺改进解决了普通冷轧钢板车身前处理后产生白色点状物及电泳漆膜上出现缩孔、爆孔、块状花斑等问题,成功实现了镀锌板车身和普通冷轧钢板车身在硅烷处理线上的混线生产。     

浅谈车身试制涂装线的规划设计

简要介绍了车身试制涂装线工艺方案的规划设计。对车身试制涂装线工艺方式、机械化方式、前处理室、喷漆室、烘干室、PVC室等非标准设备的结构、功能及试制涂装车间的＂三废＂处理、消防、安全防护等进行了优化设计,使车身试制涂装线满足试制车身的涂装质量要求和节能环保的要求,为车身试制涂装线的工艺规划设计提供了一种新的理念。     

新型多功能橇体的设计与应用

针对目前汽车生产线需新老产品混线生产,而原有橇体机构无法实现的状况,通过对新老产品的底部结构数模进行分析研究,设计出一款新型多功能橇体。介绍了该橇体的设计实施过程、结构组成、工作原理及相关技术要求等。     

工程机械驾驶室涂装颗粒分析与控制

电泳涂装质量分涂层内在特性指标和外观质量。外观质量直接体现涂装线的管理水平,而涂层表面颗粒的多少是涂膜质量的重要评价因素,也体现了整条线的综合水平。本文结合三一车身有限公司电泳涂装线实际情况,对驾驶室产品进行了颗粒缺陷采样分析,重点分析涂装颗粒的产生原因和采取的相应措施,缺陷发生率下降75％,改善效果显著。     

Surface forces and inertial effects on moving contact lines

A new mathematical model for the flow field near a dynamic contact line is presented in this paper. The new model takes into consideration the existence of unbalanced forces at the fluid-fluid interface. These forces could be caused by the presence of surface tension gradients, surface deformation or body forces such as London-var der Waals forces, unretarded London-var der Waals forces, electrostatic double-layer forces, etc. Inertia effects on the moving contact line is also studied.     

A Cross between Bread Wheat and a 2D(2R) Disomic Substitution Triticale Line Leads to the Formation of a Novel Disomic Addition Line and Provides Information of the Role of Rye Secalins on Breadmaking Characteristics

A bread wheat line (N11) and a disomic 2D(2R) substitution triticale line were crossed and backrossed four times. At each step electrophoretic selection for the seeds that possessed, simultaneously, the complete set of high molecular weight glutenin subunits of N11 and the two high molecular weight secalins of rye, present in the 2D(2R) line, was carried out. Molecular cytogenetic analyses of the BC₄F₈ generation revealed that the selection carried out produced a disomic addition line (2n = 44). The pair of additional chromosomes consisted of the long arm of chromosome 1R (1RL) from rye fused with the satellite body of the wheat chromosome 6B. Rheological analyses revealed that the dough obtained by the new addition line had higher quality characteristics when compared with the two parents. The role of the two additional high molecular weight secalins, present in the disomic addition line, in influencing improved dough characteristics is discussed.     

涂装线π型烘道的改造

重点叙述了涂装线上π型烘道的改造方法及改造后的使用效果；改造后使货厢与车身达到同一涂装质量水平，降低了烘道升降段事故发生率，充分发挥涂装线的设计潜能     

Rates of depletion of linoleic acid from fat depots of selected lines of mice differing in growth rate and adiposity

Rates of depletion and half-lives of linoleic acid from epididymal, subcutaneous and retroperitoneal fat pads and the residual body were compared among 5 genetically diverse strains of mice: M16, a polygenic obese line developed by selection for high postweaning gain; ICR, a control line from which M16 was derived; H₆, a nonobese strain selected for large 6-week body weight; L₆, selected for small 6-week body weight; and C₂ a control line from which H₆ and L₆ were initiated. Rates of depletion and half-lives of linoleic acid were obtained on a fat-free diet following an enrichment period of feeding a diet high in linoleic acid. The M16 mice have an increased capability of synthesizing fat from carbohydrates as shown by a continued increase in fat depot weights when fed the fat-free diet. The 4 other lines showed no subsequent increase in fat depot weights on the fat-free diet. Rates of depletion of linoleic acid were significantly different among lines in each of the 4 depots. Ranking of lines for depletion rates was similar among the 3 discrete depots, but a more rapid rate of depletion was observed in subcutaneous and retroperitoneal fat depots than in the epididymal fat depot. Rates of depletion in line M16 were slower than in the ICR control line. Line H₆ had a slower rate of depletion than line L₆. Line L₆ deviated more from the C₂ control than did line H₆, indicating an asymmetric correlated selection response. The decreased depletion rate of linoleic acid in fat tissue of M16 and H₆ mice suggests the possibility that the turnover rates of fatty acids have been reduced in these lines as a result of a reduction in lipolytic activity. The increased depletion rate of linoleic acid in L₆ mice suggests that selection for small body size has substantially increased the rate of fat turnover. The experiment demonstrates that genetic differences among lines in fat turnover have accurued as corelated responses to selection for growth rate.     

传统磷化转锆系薄膜前处理的前期工艺试验

锆系薄膜或硅烷薄膜前处理在国内主机厂已有部分应用,但多数为新建薄膜线,直接按薄膜工艺规划并使用,而对老线由传统磷化转为锆系薄膜前处理的研究甚少。为研究工厂传统磷化转薄膜前处理的可行性,降低转换带来的风险,本文设计了一系列实验,结合工厂现有电泳漆和车身板材,通过对泳透力、上电电压、停线性能、电泳入槽方式、打磨印遮盖等的研究,验证薄膜前处理与电泳漆以及车身板材的配套性能。通过实验结果评估薄膜前处理的使用对工艺参数、外观质量等方面的影响,为进行传统磷化转薄膜前处理工作打好基础。结果表明:薄膜前处理工艺对停线时间较为敏感,但其他工艺参数波动对其影响不大,并且在泳透力及电泳成膜的表现上也优于传统磷化。     

Convective drying of porous material containing a partially miscible mixture

Non-hygroscopic capillary porous bodies were dried by convection to investigate the influence of a two-phase moisture on the drying characteristics. The samples were wetted with the ternary liquid mixture 2-propanol/water/1-butanol. This system forms two liquid phases at low propanol concentrations. The drying rate is not significantly influenced by a two-phase moisture. Selectivity is influenced by the drying conditions as well as the characteristics of the capillary porous body. In the two-phase region selectivity can be shifted most effectively by the temperature of the drying air and by the pore size of the porous body. Selectivity can even inverted if the initial moisture composition is close to the boundary line. In the porous body a moisture profile, as well as a concentration profile, was measured.