论薄板坯连铸连轧产品质量优势

通过对薄板坯连铸连轧工艺的分析，深入研究了其产品的质量优势，同时还指出了在产品生产过程中需要重点注意解决的一些问题。     

Finding feasible mold parting directions using graphics hardware

We present new programmable graphics hardware accelerated algorithms to test the 2-moldability of geometric parts and assist with part redesign. These algorithms efficiently identify and graphically display undercuts as well as minimum and insufficient draft angles. Their running times grow only linearly with respect to the number of facets in the solid model, making them efficient subroutines for our algorithms that test whether a tessellated CAD model can be manufactured in a two-part mold. We have developed and implemented two such algorithms to choose candidate directions to test for 2-moldability using accessibility analysis and Gauss maps. The efficiency of these algorithms lies in the fact that they identify groups of candidate directions such that if any one direction in the group is undercut-free, all are, or if any one is not undercut-free, none are. We examine trade-offs between the algorithms' speed, accuracy, and whether they guarantee that an undercut-free direction will be found for a part if one exists.     

过程控制级模拟轧钢系统的研制及在热轧试车中的应用

宝钢集团上海第一钢铁有限公司(后面简称一钢)新建的不锈钢工程1780热轧项目中,为了能在较短周期内完成所有的应用软件开发与测试任务,特别研制了模拟轧钢功能。本论文主要阐述利用计算机的集成思想,结合热轧工艺,来开发模拟轧钢功能,以及利用模拟轧钢进行现场各种情况的模拟测试。     

安钢高线粗中轧机导卫设计特点

介绍了安钢自行设计的高线粗中轧机导卫装置的设计原则和特点。     

特钢长型材轧制技术新进展

在可持续发展原则指导下，强化控轧控冷、高精度轧制和改进表面与外形质量是当前特钢轧制技术发展的重点。     

仿西班牙横移车断齿事故分析及改进

某炼钢厂仿西班牙产品制造的板坯横移车运行机构采用分别驱动、变频调速、无人操纵自动控制技术。其减速器齿轮多次发生点蚀、塑性变形、断齿等事故或故障 ,严重时曾出现轮齿全部被剃光的现象。经分析 ,其根本原因是承载能力不足。通过重新选型设计 ,加大减速器中心距 ,彻底根除了断齿等事故隐患     

起落架落震试验飞机机轮三向冲击位移的动态测量

为了研究飞机起落架受冲击载荷时的功量吸收状况，须在起落架落震试验中，对飞机着陆瞬间起落架机轮在空间三个方向上冲击位移的动态变化量进行测量。为此，本文设计了四自由度空间定位装置，并使其与计算机连接，实现了落震试验过程中，起落架在高速冲击状态下机轮三向位移的有效测量与记录。     

Integration of batching and scheduling for hot rolling production in the steel industry

This paper investigates the hot rolling production scheduling problem in the steel industry and proposes a new mixed integer programming model for this problem based on the monolithic modeling strategy that integrates batching and scheduling. Using this strategy, the new model can simultaneously schedule multiple turns and simultaneously determine the production timetable of these turns in a global optimal view. A long-term tabu search heuristic using frequency-based memory is developed to obtain near-optimal solutions for this problem. Three kinds of speed-up strategies are developed to accelerate the search procedure of the proposed tabu search. A practical scheduling system combining the proposed mathematical model and the tabu search heuristic has been developed and tested on instances collected from practical production data. The experimental results show that the proposed mathematical model and the tabu search heuristic outperform both the current manual scheduling method and the traditional serial method.     

初轧机主传动系统扭转自激振动的稳定性

用变量摄动法对初轧机主传动系统扭转自激振动的稳定性进行了初步研究，讨论了稳定性条件，为初轧机打滑状态的诊断、监测提供了参考依据。     

天然调味料──酵母抽提物的研究进展

着重论述了酵母抽提物的特性、在食品中的应用前景、制造方法、工业化生产中存在的问题及其解决方法，并对酵母抽提物的发展方向作一展望。