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4061.回火温度对35crmnsimo铸钢的微观结构和机械性能的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
The tempering temperature on microstructure and mechanical properties of 35CrMnSiMo cast steel are studies in this article.Results showed that 880℃ x30min 35CrMnSiMo cast steel after quenching water,hardness up to 49.6HRC,reached 39.04 J/cm2 toughness.
关键词：钢铁；回火温度；微观结构；机械性能
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4062.回火温度对铌钛微合金化低碳贝氏体钢组织性能的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
The effect of tempering temperature on microstructures and mechanical properties of niobium and titanium microalloying low carbon bainite steel was investigated.The results indicate that the mechanical properties change is mainly controlled by the structure evolution,and as the structure evolution during tempering is complex,the mechanical properties do not monotonously increase or decrease with the increasing of tempering temperature.
关键词：钢铁；回火温度；铌钛微合金；低碳贝氏体；组织性能
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4063.报废汽车钢板的粉碎试验与仿真研究
[汽车制造业,黑色金属冶炼和压延加工业] [2014-03-26]
The shredding test and simulation of steel-plate of scrap automobile are mentioned in this text.The result of experiment and simulation are compared.The situation of experiment and attaining the simulation result by the postprocessor program of ANSYS has found a reliable analysis method.The engineering software of ANSYS/ LS-DYNA is used to simulate.
关键词：汽车；钢铁；报废汽车；汽车钢板；粉碎试验；计算机模拟
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4064.基于视觉的移动机器人路径跟踪
[电气机械和器材制造业] [2014-03-26]
关键词：光机电；机器人；视觉；移动路线
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4065.利用奶牛和肉牛畜牧生产的可再生能源及环境的可持续发展.卷1：热化学转化与直接燃烧法
[电力、热力、燃气及水生产和供应业] [2014-03-26]
Manure-based biomass (MBB) has the potential to be a source of green energy at large coal-fired power plants and on smaller-scale combustion systems at or near confined animal feeding operations. Although MBB particularly cattle biomass (CB) is a low quality fuel with an inferior heat value compared to coal and other fossil fuels, the concentration of it at large animal feeding operations can make it a viable source of fuel. The overall objective of this interdisciplinary proposal is to develop environmentally benign technologies to convert low-value inventories of dairy and beef cattle biomass into renewable energy. Current research expands the suite of technologies by which cattle biomass (CB: manure, and premature mortalities) could serve as a renewable alternative to fossil fuel.
关键词：生物质能；动物粪便；可再生能源；热转化；水污染控制
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4066.脉冲电流对钢坯显微组织演化影响的实验研究
[黑色金属冶炼和压延加工业] [2014-03-26]
This paper studies the influence to the microstructural evolution of low carbon steel and low carbon Nb steel through experiments in order to improve the microstructure of billet.The results of the study show that electropulsing has significant impact on the phase transformation from austenite to ferrite of low carbon steel and low carbon Nb steel,which improves nucleation rate of ferrite inside austenite grain.
关键词：钢铁；钢坯；显微组织；脉冲电流；铁素体；成核现象
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4067.液压系统建模和降级机器人的工作装置运动控制
[电气机械和器材制造业] [2014-03-26]
Based on the electro-hydraulic proportional system of a demolition robot working device,a simplified mathematical model was established by analyzing dynamic characteristics of the electro-hydraulic proportional valve,flow equation,the continuity equation and force equilibrium equations,and the fuzzy self-adaptive PID controller was designed to realize position control of working equipment.The simulations reveal that,compared with traditional PID,the fuzzy self-adaptive PID controller has these advantages such as smaller overshoot,good dynamic response and steady state performance.
关键词：光机电；机器人；电液比例系统；模糊自适应PID
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4068.木质纤维素生物质原料性质对内生真菌VOC属性的改变
[电力、热力、燃气及水生产和供应业] [2014-03-26]
Endophytic fungi have been shown to produce a range of moderate-molecular weight hydrocarbons (volatile organic compounds-VOC) directly from cellulosic biomass without any pretreatment. These organisms have the capacity to alter their VOC profile as a function of carbon source. We cultured a number of these fungi on potential biofuel biomass (corn stove, eucalyptus and switchgrass) as the sole carbon source and their growth rates were compared to potato dextrose agar. We then performed a VOC profile of the biomass-supported fungal cultures. Our findings are an important first step in developing industrial hosts (microbes or fungi) with both biomass deconstruction and fuel synthesis pathways.
关键词：生物质能；液体燃料；挥发性有机化合物；真菌；木质纤维素
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4069.冷却速率对bearing-B钢铁的金相组织和硬度的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
Effects of cooling rate on metallographic and hardness ofbearing-B steel were investigated in presem research. The results showed it consists of ferrite and pearlite formed in the initial stage of the transformation in the studied bearing-B steels cooled at 0.5 ℃/s.
关键词：钢铁；冷却速率；金相组织；硬度；bearing-B钢铁
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4070.磁轮式爬壁机器人的设计与实现
[电气机械和器材制造业] [2014-03-26]
This paper presents a climbing robot, with wheeled locomotion and adhesion through permanent magnets. This machine was developed to be used in the inspection of several types of man-made ferromagnetic structures, such as towers for wind turbines, fuel storage tanks, ship hulls, etc., in order to, for instance, detect weaknesses due to corrosion. In this article are presented the main aspects taken into consideration for its design, as well as several constructive aspects, among which are detailed its mechanical and electrical construction, the implemented control architecture and the Human-Machine Interface (HMI) for its control. The distinguishing characteristic of this robot is its dynamic adjustment system of the permanent magnets to assure the machine adhesion to the surfaces when crossing slightly irregular and curved surfaces with a large radius.
关键词：光机电；机器人；磁轮式
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