L360管线钢热轧过程静态再结晶行为的研究

奥氏体再结晶行为是影响热轧钢带组织和力学性能的1个主要因素。在热模拟试验的基础上,采用应力松弛法和显微组织观察法,对含Nb和Ti的L360管线钢热轧过程奥氏体静态再结晶行为进行了研究,分析了应变、变形温度、应变速率、原始奥氏体晶粒尺寸对奥氏体静态再结晶的影响。利用线性回归分析,计算出试验钢静态再结晶激活能为203kJ;同时通过回归,得出试验钢热轧过程静态再结晶动力学方程。     

外部全景仿真的汽车模拟运行平台设计与实现

针对当今汽车展示中由于场地空间有限等诸多因素的限制无法有效、逼真地对车辆行驶过程中的外部动态全景进行展示的问题,结合当前市场需求与技术发展的实际状况,以汽车模型为基础,基于车辆行驶外部状态与全景的运行模拟,设计了一种实用的汽车模拟运行平台,并利用相对运动的思想与半实物仿真技术,通过车辆(模型)、车辆姿态控制、道路姿态控制、效果景物控制4个机械子系统,以及电子控制系统,构成了实时控制与功能模块控制两种工作模式,实现了平台的协同工作。最后,对实际仿真效果进行了实验测试。研究结果表明:该系统可对车辆行驶时的外部全景进行仿真模拟,并能够仿真出汽车的多种运行状态,是一种具有较高使用价值的汽车模拟运行平台。     

360m^2烧结机振动筛筛分性能改进设计

通过对360m2烧结成品振动筛存在的问题进行分析,制定解决方案,改造后提高了筛分效率,高炉的系数得到了很大提高。减少了振动筛的能源消耗,降低了设备故障率,且设备现场环境得到了改善。     

220kV同塔双回双分裂导线防覆冰舞动的研究与设计

笔者从线路设计角度进一步定性分析了单(或双分裂)导线覆冰舞动机理,指出使用现有抑舞装置应注意的问题:单导线(地线)耐张线夹和悬垂线夹的固定导线(地线)结构使固定点附近的单导线(地线)扭转刚度很大,易形成偏心覆冰并诱发舞动,进一步扩散至档内中央;绞制的导线单丝沿线不连续覆冰使单丝应力分布不均,以致导线内部不稳借助风力发生...     

K360钢堆焊合金层组织与抗裂性能

采用CO₂气体保护焊的堆焊方法,选用RD-YD450（Q）焊丝对试验所用母材中板（日本K360超级耐磨钢）进行焊接试验.利用光学显微镜、SEM,TEM,XRD对堆焊层组织进行了鉴定与分析.采用刚性固定对接裂纹试验对YD450（Q）的堆焊层的抗裂性进行研究.结果表明,堆焊层产生的裂纹为延迟裂纹,此裂纹产生的主要原因是焊接过程中的拘束应力过大.试验结果证明,采取焊前预热的方法,选择合理的预热温度能够避免裂纹的产生.     

NMG360耐磨钢板的研制

立足于国内的生产状况研制出NMG360耐磨钢板。其轧制态硬度大于360HBS,耐磨性能也已达到国外同类产品水平。     

A valid method of calculating virtual scene depth

Traditional methods of constructing virtual environ-ment are based on3D geometry models.Although ithas the advantage of easy interaction,it has the prob-lem of complex modeling and slowdisplaying.RecentlyImage Based Rendering(IBR)method has been pro-duced,which models the environment using pieces ofimages.In this method requiring time does not rely onthe environmentcomplexity,butithas the disadvantageof difficult interaction.In order to take advantage oftheir merits concurrently,a method bl…     

Interactive mobile equipment safety task-training in surface mining

Improving the quality of equipment training for the Heavy Equipment Operators (HEO) is a critical task in improving safety and eliminating equipment-related injuries in mining. One of major responsibilities for the HEOs is proper machine inspection. Traditional miner safety training includes the use of hardcopy documents and video instructions. However, modern mobile and computer technology offers tremendous potential to improve the training process. In this study, we apply a 360-degree camera, open-source platform WordPress™, and the software Unity3D in order to create materials and tools for the HEOs safety training to help trainees better understand the pre-shift safety machine inspection. The computer-based safety task training developed in this research is tested and implemented at a surface mine in the southern United States.     

A proposal for a 360° information system model for private health care organizations

At a time when communication, new media, and digitalization are transversal to the whole of society, private health care organizations have the possibility of making their business processes evolve. The objective is thus to seize the benefits associated to the active use of patients' electronic health records (EHRs) as the basis for personalized health care. In order to initially validate the health care sector acceptance of a 360° health care information system (HIS), focused on collecting patients' data to create the necessary knowledge for delivering personalized health care procedures and initiatives, a focus group involving a set of health-related professionals was performed. Despite recognizing the immense possibilities associated to EHR and its direct incorporation on a 360° HIS, the referred professionals still highlighted their concerns relative to the maintenance of adequate security and privacy levels. With this in mind, a proposal for a 360° HIS model is presented, and its main functional blocks are described with a focus on triggering patient/customer loyalty.     

深埋地铁隧道的保护性切割与清理施工

针对障碍物埋深大,切割难度高的特点,在综合比较同类设备性能的基础上,选用全回转钻机作为清障设备。结合具体工程对全回转切割清障的工作原理以及对破损隧道切割过程中对完好隧道的保护措施等加以介绍。工程实践表明:全回转钻机垂直精度好、施工效率高,在工程中针对具体情况采取的相应技术措施行之有效,成果可为其它同类工程提供借鉴与参考。