基于问题原型的采矿方法选择专家系统的研究

本文针对矿山的实际需要，以矿山工作人员应用对象，在充分分析矿块回采问题的基础上，提出了三种问题原型，建立了领域问题的知识库，编制了推理机，用户接口，解释，知识库管理等程序模块，形成了采矿专家系统的框架，为进一步开发奠定了基础。     

在2008年年会上的讲话

今天下午的会议时间比较紧凑，计划的内容都进行完了，最后，我就当前不锈钢面临的几个问题再做一个分析。前面楼会长、吴部长、吴理事长实际都已经讲到了，中国的不锈钢已经走入了一个新的发展阶段，这有值得高兴的一面，但大家也应该客观地看到，我们出现的问题确实也和世界并轨了，这就是一直困扰不锈钢世界的两大问题，第一是市场问题，第二是原料问题，     

浅析我国有色金属产业组织结构

本文通过对我国有色金属产业组织结构现状的典型分析，揭示了目前存在的主要问题，分析了造成这些问题的原因，提出了解决这些问题的理论主张和政策措施。     

从湿法硫酸镍中去除锰、铁的新工艺研究

简这了湿法制备硫酸镍过程中以NaClO为氧化剂，CaCO3为中和剂除锰，铁工艺中存在的主要问题，针对这些问题，将该工艺改进为以KMnO4为氧化剂，NaOH为中和剂去除锰，铁，结果表明，新工艺有效扼制了原工艺中存在的主要问题，较大地提高了生产效率，降低了生产成本。     

应用线性规划模型解决铁合金企业产品结构优化问题

利用线性规划理论，建立了数学模型，解决了铁合金企业产品结构优化问题，文中探讨了关于目标函数，约束条件，模型背景等问题。     

关于钢铁工业的投资问题

本文通过战略分析提出了钢铁工业的投资问题，进而论述了在从战略层次上分析投资问题时应该认真思考的企业结构优化，投资问题内函，“量力而行，滚动发展”市场的容量性，竞争性和变化性，科技进步水平的定位与投入资金的矛盾性和统一性等重要问题。并且对投资决策的知识化程度和创造性作了分析。     

浅析我国有以金属产业组织结构

本文通过对我国有以金属产业组织结构现状的典型分析，揭示了目前存在的主要问题，分析了造成这些问题的原因，提出了解决这些问题的理论主张和政策措施。     

浅谈信号灯与合闸接触器的合理选配

本文论述了高低压控制系统中，合闸接触器与其信号灯合理选配的问题，对存在的问题进行了理论分析，提出了预防措施。     

压滤机液压系统中液压油的污染与防污

对我厂压滤机液压系统故障率高的原因进行了分析，着重分析了液压油被污染的原因及危害，并提出了改进的措施，通过解决压滤机液压系统中油的密封问题。和增加过滤网，精过滤器，精选各种液压元件等措施，解决了压滤机液压系统故障率高的问题，并提出了液压系统使用过程中应注意的问题。     

计算机技术图书分类标引存在的问题及对策

从文献分类的实践出发，提出了对计算机技术图书分类标引工作存在的问题，分析了问题的原因，提出了解决问题的方法。     

Aspects of Technological Development of Wind Turbines

The wind turbine technology has a unique technical identity and unique demands in terms of the methods used for design. Remarkable advances in wind power design have been achieved due to modern technological developments. Since 1980, advances in aerodynamics, structural dynamics, and “micrometeorology” have contributed to a five percent annual increase in the energy yield of the turbines. Current research techniques are producing stronger, lighter, and more efficient blades for the turbines. The annual energy output per turbine has increased enormously and the weight of turbine and the noise they emit have been halved over the last few years. The deployment of modern wind turbines has resulted in experience in the production and use of wind turbines, which has led to improved turbines and reduced cost of wind-generated electricity. The paper reviews the research and development of technology of wind turbines and its impact on the cost of wind energy systems. Also the important gaps between the theoretical research and practical implementation have been analyzed and the problems associated with this have been discussed. The need and areas for further research and development effort have also been outlined.     

The economics of the use of cermet seals in steam turbines

Summary The use of cermet sealing materials in steam turbines improves their reliability and produces considerable savings in fuel and money.Our calculations showed an increase in the profitability of various types of turbines and made possible the determination of the saving per 1000 kW of turbine capacity, to equal 107 rub. This, in turn, makes possible savings, which in 1970 will amount to 2,183,000 rub., by fitting all new turbines with cermet sealing elements.     

Virtual Wind Speed Sensor for Wind Turbines

A data-driven approach for development of a virtual wind-speed sensor for wind turbines is presented. The virtual wind-speed sensor is built from historical wind-farm data by data-mining algorithms. Four different data-mining algorithms are used to develop models using wind-speed data collected by anemometers of various wind turbines on a wind farm. The computational results produced by different algorithms are discussed. The neural network (NN) with the multilayer perceptron (MLP) algorithm produced the most accurate wind-speed prediction among all the algorithms tested. Wavelets are employed to denoise the high-frequency wind-speed data measured by anemometers. The models built with data-mining algorithms on the basis of the wavelet-transformed data are to serve as virtual wind-speed sensors for wind turbines. The wind speed generated by a virtual sensor can be used for different purposes, including online monitoring and calibration of the wind-speed sensors, as well as providing reliable wind-speed input to a turbine controller. The approach presented in this paper is applicable to utility-scale wind turbines of any type.     

武钢CCPP起动变频器组成及起动工序

武汉钢铁（集团）公司CCPP（燃气-蒸汽联合循环发电）电厂配置两台燃气轮发电机,为提高运行效率,减小起动过程中对设备造成的冲击,都采用变频器进行起动。本文重点研究对起动变频器的选型和工艺要求,介绍在燃气轮机起动过程中起动变频器的工序要求,包括吹扫、盘车、正常起动、重起动、多台机组起动等过程,介绍起动变频器的整体结构和控制器组成,描述燃气轮机起动过程中起动变频器的实际运行工序,给出起动变频器运行过程中的输出实时曲线和特性。武钢CCPP电厂通过采用起动变频器起动发电机,提高了机组运行效率,实现了快速倒机操作,并减小了起动过程中对电网和设备的冲击,提高了电网的利用率。     

Life assessment for creep and fatigue of steam turbine components

Improvement of life assessment technologies for power plant materials and components is important in order to meet demands for economy and reliability. As for steam turbines, blade root and disc joints are one of the critical parts in turbines that experience the most severe creep and fatigue damage under high temperature or corrosive environment. In these parts, the structural stress concentration areas are close to the contact planes of blades and rotors, and this produces a complicated stress-strain field. Therefore, life assessment technologies based on precise stress analysis methods and damage mechanisms are necessary to ensure the reliability and economy of steam turbines. In this paper, creep and fatigue tests results by using component specimens simulating blade and rotor joint portions are described. Damage mechanisms of joint portions were investigated based on the observations of the micro-crack initiation and growth behaviors. Life assessment methodologies for joint structures are also discussed, based on the micro-damage, micro-crack or micro-cavity, and nonlinear finite element analyses of component specimens.     

硅钢产线进口焊机设备管理策略

宝钢股份武汉钢铁有限公司硅钢事业部青山工厂产线进口焊机种类多,机型杂,管理难度大.本文结合多年的进口焊机技术管理经验,形成了以进口焊机运行稳定性与焊缝质量可靠性为目标的主要管理理念,介绍了进口焊机管理团队模式、核心内容、技术管理、现场管理、备件国产化、焊机智能化几方面的思路,实现了进口焊机的可靠稳定运行,减少了断带和重焊事故的发生.     

Influence of Mechanical Draft Tube Fish Barrier on the Hydraulic Thrust of Small Francis Turbines

Environmental regulations have required from hydroelectric power plants more effective means of restricting the access of fish into the draft tube of hydraulic turbines. The decline of fish populations on rivers used for electricity generation has motivated the installation of mechanical gates as fish barriers on the tailrace pipe of hydroelectric power plants as a technical solution to preserve aquatic wild life. However, variations in the flow conditions through the turbine runner may modify the performance characteristics of turbines, thus affecting their capacity for electricity production. This note presents an experimental study of the influence of draft tube gates on the hydraulic forces acting on Francis turbines. A Francis turbine test bench was specially designed to allow this investigation. Measurements of the hydraulic thrust in relation to the level of flow restriction at the draft tube exit indicate that the mechanical gates excessively increase the axial load on the runner shaft, which may shorten the hydrogenerator unit life.     

Saving resulting from the use of nickel-free sintered materials in turbogenerator packings

Summary A calculation has been made, on the basis of operating data, of the saving resulting from the use of nickel-free packing inserts in steam turbines. It is shown that, as a result of this measure, the efficiency of steam turbines rises by 1.6, and the saving per turbogenerator installation is 33 tons of fuel and 200 kg of nickel.Translated from Poroshkovaya Metallurgiya, No. 12, pp. 43–45, December, 1966.     

Research and development of hot-corrosion resistant superalloys

The hot-corrosion resistant superalloys have been widely applied in the gas turbines for power generation industry,the marine gas turbines in the aircraft carrier and missile destroyer as well as the aeroengines in shipboard aircraft and offshore fighter plane.Based on the ten kinds of hot-corrosion superalloys that were developed by the authors in the recent 10 years,the paper has reviewed the status and development of hot-corrosion resistant superalloys in domestic and overseas.The characteristics of chemical composition, microstructure,mechanical properties and manufacturing process are analyzed emphatically.Simultaneously the applications of hot-corrosion resistant superalloys are introduced as well.     

广东口岸进口铁矿石质量情况分析

介绍了2003～2005年度广东口岸进口铁矿石业务基本概况和品质检验情况，并对各进口国在铁矿石品种、检测项目等方面作出了全面质量分析，最后针对铁矿石进口市场秩序、质量状况等方面问题提出一些具体建议．