常用润滑油品牌号新旧国标与国际标准对照——实现进口设备用润滑油国产化

机械设备的润滑是设备维修工作十分重视和关心的问题。我国石油工业的飞速发展,油品品种的日趋增多,精制深度的不断提高和新油品相继问世,为设备维修工作者提供了正确地选油、合理地用油和进口设备用润滑油国产化的可能,而贯彻执行润滑油品“新国家标准”,是正确地选油、合理地用油,实现设备有效润滑的前提。     

埃克森美孚启用亚太区新的Signum实验室

中国上海,2013年6月19日,埃克森美孚正式启用建于埃克森美孚上海研发中心的亚太区新的Signum实验室。位于中国的新实验室是埃克森美孚在亚太区的第一个Sig-num实验室,可为客户提供高品质的油品分析,帮助其提高设备的性能。凭借40多年的油品分析专业知识,埃克森美孚Signum油品分析服务专为监测在用油品的关键指标而量身定制。该服务提供快速和非侵入性的方法,评定设备的运营状况并帮助实现其最佳性能。     

梅钢热轧产线油品降耗研究与成果

针对梅钢热轧在2013年度两条产线设备用油过程中存在的问题,通过技术攻关及优化改善等系列措施,减少设备用油量,延长油品使用周期,提高了用油效能,取得了全年油品消耗下降26%的目标效果。     

油价波动中的企业成本控制

国际油价的上涨,使企业生产成本大幅上升,降低油品的采购成本,是控制以油品为燃料或原料企业生产成本上升的途径之一。     

1500mm热轧宽带油膜轴承润滑技术研究

1 500 mm热轧宽带生产线润滑系统是油膜轴承运行的关键部件,通过研究,分析了润滑条件,从油液污染度、油温、油压、油品监控等方面提高,使油膜轴承实现长周期稳定运行。     

关于强化油品检测中心职能的探讨

阐述强化南钢油品检测中心职能的必要性,探讨油品检测中心职能需要补充、强化的主要工作内容,以及需要相应增加的油品检测仪器。期望能对南钢发展转型提供有益的参考。     

中厚板轧钢液压系统油品质量的维护

介绍了中厚板轧钢生产线在日常维护中采取的一系列提高油品质量的方法措施,减少了系统及设备的故障,保证了生产顺利进行。     

一钢不锈钢设备开展早期科学合理润滑初探

对一钢不锈钢项目建设初期开展油品的合理归并，有效的油品状态监测，正确的维护标准制订，以确保油品和设备寿命最大化，油品数量和润滑维护成本最小化，为润滑管理达到国内领先水平，国际先进水平，提出了个人的观点和思路。     

单机架六辊可逆轧机液压系统温升故障的分析与处理

液压系统是以液压油作为工作介质进行能量转换和传递动力的,因此油品的选择和使用是非常重要的,本文着重对轧机液压系统的油品因季节性温度过高导致无法正常转车的故障展开综合分析和论证提出改进措施。     

WOD－1型油品含水率检测仪在高线润滑系统的应用

在工业设备的润滑和液压系统中，油品含水率是一项重要的技术指标，关系到润滑状况、工作稳定性和设备安全运行。介绍WOD—1型油品含水率检测仪在杭钢高线公司的应用实况。     

赣南钨矿山资源状况调查与思考

通过赣南钨矿山资源调查,反映钨矿山资源状况不容乐观。据地质报告中统计,赣南累计探明WO3储量149.98万t,其中上平衡表113.67万t,而保有储量仅有46.7万t;国有钨矿山保有储量26.4万t,可利用的储量10.4万t,可服务年限大都在10a以下。因此,建议尽快对赣南的国有钨矿山开展新一轮的地质找矿,寻找新的接替基地,控制钨矿产量,对尾砂综合回收和利用。     

Optimum Design of Welded Steel Plate Girder Bridges Using a Genetic Algorithm with Elitism

The genetic algorithm (GA) is a general optimization technique that has some unique features that are especially suitable for structural engineering problems. This work uses a simple GA with elitism to find the optimum design of welded steel plate girder bridges. The objectives are to minimize the weight and the cost of the girders. Two types of plate-girder bridges are studied: a single-span bridge and a two-equal-span continuous bridge. Bridges with various span lengths, in increments of 20?ft, are investigated; results are tabulated, parametric studies are made, and meaningful conclusions are drawn.     

无缝钢管中非金属夹杂物特性研究

峰位于4869 eV位置,对应于元素锡的四价氧化态。锡泥中含有的主要成分为SnO2。     

客运专线用100米钢轨矫直断裂原因分析

 客运专线用100米60kg/m重轨在焊轨厂拼焊后,当四面矫直时发生断裂。采用光学显微镜及扫描电镜（TEM）等方法对钢轨矫直时断裂原因进行了分析和研究。结果表明：钢轨断裂是由于距钢轨端部约100mm轨底边缘处存在凸台缺陷,此凸台在钢轨拼焊后进行除瘤时除瘤刀将其铲平,致使钢轨产生冷裂纹,进而在矫直时断裂。通过控制万能精轧上下辊的辊径差以及调整轧制线高度等方面,使钢轨出轧机时尽量保持平直,避免上翘或扣头,从而消除凸台缺陷的产生。     

Stability and Accuracy of Weighted Four-Point Implicit Finite Difference Schemes for Open Channel Flow

The unsteady motion of streams, with a free surface, has been described by a system of equations that were proposed by Saint-Venant in 1871. These are universally known as “Saint-Venant’s equations.” Weighted four-point implicit finite difference schemes are largely used for their numerical solution in the case of one-dimensional flow. For these models, stability, dissipation, and dispersion are first investigated by looking at the truncation error and then by using Fourier’s classic linear analysis. Variations of the space and time weighting coefficients, the Courant number, the Froude number, and the frictional resistance term are examined in this paper. In particular, instabilities are analyzed that are due to the progressive accumulation of dispersion errors, which are the consequence of an increasing frictional resistance term. However, in this case the numerical scheme requires a dissipation mechanism. Computational suggestions are given for this mechanism.     

矿产资源定价方法的实证研究

文中分析了资源－环境－经济一体化核算的研究现状及存在的问题,界定了矿产资源核算的内涵及其对象,论述了矿产资源定价的理论基础,探讨了矿产资源的各种定价方法及其优缺点,适用范围,建立相应的估价模型,并进行了实证分析,这项研究对我国的资源－－环境－经济一体化核算的理论研究与实践进展具有重要的理论意义和现实意义。     

浅谈推行标准化操作的实践

针对推标工作的指导思想、基本原则、基本步骤、具体做法、实施措施、工作速度,制定了有效办法,保证了推标工作的有序进行,克服了推标工作的随机育目性,在岗位操作标准制定时,打破以往三大进修规程的理论体系强,岗位操作弱的特点,抓典型、树样板、以点带面、以面推动全局。     

TiO2应用性能的影响因素及其改善措施

分析了影响TiO2遮盖力、耐候性、分散性等应用性能的因素,重点阐述了金红石型TiO2表面包覆硅铝氧化物的方法及对这些应用性能的影响,在此基础上对包覆机理进行探讨。同时分析了我国TiO2包覆技术存在的主要问题并指出相应对策。     

Satisfactions and interests.

The problem of defining satisfaction and the difficulties in distinguishing interests and satisfactions are indicated. "Aside from the final, consummatory activity, satisfaction cannot be identified in terms of activities, as can interests… . Because opinion items are not as stable as interest items, it is doubtful that they can be as useful as interest items in predicting future behavior." 5 characteristics of interests are that they: are acquired, are persistent, vary in intensity, function in acceptance-rejection behavior, are indicated in readiness to act. "Interest tests are diagnostic because no two persons have acquired the same lists of activities nor are the activities classified in the same manner as liked or disliked. Moreover, people engaged in an occupation have to a marked degree similar interests, and so people in one occupation can be differentiated from members of other occupations." Major topics are: job satisfaction and job success; opinion, attitude, interest, and satisfaction; measurement of motivation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Evaluation of Uplift Interpretation Criteria for Drilled Shaft Capacity

Representative interpretation criteria are examined to evaluate the capacity of drilled shaft foundations under axial uplift loading. A wide variety of uplift load test data are used, and these data are divided into drained and undrained databases. The interpretation criteria are applied to these load test data to establish a consistent uplift interpretation criterion. The results are comparable for both drained and undrained loading. In general, the undrained load test results show somewhat less variability than the drained results. Based on these analyses, the QL2, Q0.5in, and slope tangent methods are the more reliable and consistent, and specific design recommendations for the interpretation of uplift drilled shaft load test are given, in terms of both capacity and displacement.