大方坯连铸机离线检修设备对中台的改进与完善

介绍了大方坯连铸机离线设备对中台及样规的改进方案.改进后,大大缩短了设备检修时间,降低了工人的劳动强度.     

精密铜带圆盘纵剪机

通过对精密铜带圆盘剪切机的工作原理和工艺过程进行研究，对引进的美国剪切机进行了技术改造，设计制作了新的装置，实现了软态铜带的剪切。     

卷取机前侧导板的设计结构分析

卷取机前侧导板的作用是把带钢对准轧制中心线送入夹送辊,并在进入夹送辊时导板夹持带钢以减少钢卷的塔形。     

顶头形状对穿孔毛管壁厚均匀性及能耗影响的研究

针对目前穿孔顶头形状研究所存在的问题,在实验室内就提高一次穿孔毛管的壁厚均匀性及降低能耗进行了系统的试验研究,初步研制成功一种新型的平头对心顶头。     

混凝土现浇箱形拱圈与拱架联合作用研究

混凝土箱型拱桥在无支墩拱式拱架上现浇施工时,采用分环分段的施工方法,可以利用拱圈与拱架的联合作用,减少钢拱架的用钢量,达到节省施工成本的目的.通过大型通用有限元软件MSC.Marc2005的模拟及实桥测试数据的分析,发现先期浇注的混凝土拱环与拱架的联合作用明显,拱圈可承担其自重的43%,即拱架只承担拱圈重量的57%,利用联合作用可节约用钢量达30%.同时提出了一个估算拱架承担拱圈重量的公式,该公式简便实用,并通过两种施工工艺的计算结果验证了该公式的准确性,可用于指导初步设计.     

Fine grinding of silicon wafers: a mathematical model for the chuck shape

Fine grinding of silicon wafers is a patented technology to manufacture super flat semiconductor wafers cost-effectively. Two papers on fine grinding were previously published in this journal, one discussed its uniqueness and special requirements, and the other presented the results of a designed experimental investigation. As a follow up, this paper presents a study aiming at overcoming one of the technical barriers that have hindered the widespread application of this technology, namely, the difficulty and uncertainty in chuck preparation. Although the chuck shape is critically important in fine grinding, there are no standard procedures for its preparation. Furthermore, the information on the relation between the set-up parameters and the resulting chuck shape is not readily available. In this paper, a mathematical model for the chuck shape is first developed. Then the model is used to predict the relations between the chuck shape and the set-up parameters. Finally, the results of the pilot experiments to verify the model are discussed.     

曲轴成品质量中心定心法及算法研究

提出了一种加工曲轴定位中心孔的新工艺方法,即成品质量中心法,能够改善传统曲轴定心工艺的许多不足。采用逆向工程技术,获取曲轴毛坯曲臂部分的所有几何信息,然后依据动平衡特性,迭代搜索预测了曲轴成品质量中心轴线,从而实现曲轴成品质量中心定心法的关键算法。     

测量归心改正模型的完善

针对目前归心改正计算模型存在的问题，提出了用于归心改正计算的通用严密的数学模型．用该模型进行计算，可保证野外观测量在数学化算过程中不损失精度．     

拓展青年岗位建功品牌内涵的探索与实践

新时代向国有企业共青团工作提出了新的挑战,国网安徽省电力有限公司团委坚持聚焦主责主业,把牢围绕中心、服务大局工作主线,找准共青团和青年工作的切入点和着力点,在有效组织带领青年服务大局、拓展青年岗位建功品牌的内涵等方面进行了探索实践,总结了相对完善的工作方法,形成了具有特色的青年岗位建功品牌“一团一工程”,彰显新时代国有企业共青团的定位和价值。     

Architectural Patents and Open-Source Architectures: The Globalisation of Spatial Design Innovations (or Learning from ‘E99’)

Patents are the strongest form of intellectual property rights available internationally, so far unbeaten by open source as a body of innovation and know-how. Mark Garcia , senior lecturer in the Department of Architecture & Landscape at the University of Greenwich, London, here considers the pros and cons of the patent system for architects in the digital age: from issues over patent categorisation by type, to possibilities of micro-royalties through the capacity of design software to track every stage of input from multiple contributors.