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4131.钻头和卡盘隔离器的革新以减少锚杆钻机的噪音
[黑色金属冶炼和压延加工业] [2014-03-20]
Among underground coal miners, hearing loss remains one of the most common occupational illnesses.This paper documents the evolution of the bit isolator and chuck isolator. Laboratory testing confirms that production bit and chuck isolators reduce the A-weighted sound level generated during drilling.
关键词：钢铁；煤矿；钻头；锚杆钻进；职业安全与健康；噪音阻尼
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4132.提高外包尖晶石的AISI411铁素体不锈钢性能的表面处理
[黑色金属冶炼和压延加工业] [2014-03-20]
Ferritic stainless steels are promising candidates for IT-SOFC interconnect applications due to their low cost and resistance to oxidation at SOFC operating temperatures.To potentially extend interconnect lifetime and improve performance, a variety of surface treatments were performed on AISI 441 ferritic stainless steel coupons prior to application of a protective spinel coating.
关键词：钢铁；尖晶石；表面处理；不锈钢；互连材料；料电池
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4133.纯电动汽车的一种嵌入式智能仪表的设计与实现
[汽车制造业] [2014-03-20]
an automobile intelligent instrument is designed to meet new requirements of the pure electric vehicles by combining the embedded development board with the embedded configuration software MCGS.In this instrument,the hardware development platform is developed to communicate with the main controller of vehicles by extending CAN bus interfaces on the embedded development board,the main control chip of which is S3C2440.Moreover,the embedded configuration software MCGS is adopted to achieve the software design of the instrument system.
关键词：汽车；电动汽车；智能仪表；MCGS；控制器局域网总线
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4134.汽车铝合金车身面板的反弹补偿研究
[汽车制造业] [2014-03-20]
We put forward a new springback compensation method based on displacement compensation principle and the principle of curved surface fairing design methods.Though full cycle simulation and calculate springback value for each working procedure,then generate the springback compensation surface.The method's practical application effect is good.
关键词：汽车；金属板材成型；反弹补偿；铝合金；车身面板
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4135.碳含量对耐候钢的耐蚀性的影响
[黑色金属冶炼和压延加工业] [2014-03-20]
The corrosion resistance performance of different carbon content weathering steels were investigated by cycle immersion corrosion test, rust layer micro-analysis and electrochemical impedance spectra techniques. The results show that the corrosion resistance performance is enhanced with decreasing carbon content of weathering steel. And the corrosion potential of rust layer becomes more positive, corrosion current density decreases, the anode dissolution of rust layer is impeded and the rust layer have more protect performance for test steel with decreasing carbon content of weathering steel.
关键词：钢铁；耐候钢；耐蚀性；锈层
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4136.正交异性钢桥面桥梁的设计、建造和维护指南
[建筑业,黑色金属冶炼和压延加工业] [2014-03-20]
This Manual covers the relevant issues related to orthotropic steel deck bridge engineering, including analysis, design, detailing, fabrication, testing, inspection, evaluation, and repair.
关键词：钢铁；高速公路桥；桥面；测试；分析；设计；检验；评估
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4137.专用汽车发电机系统的功率匹配研究
[汽车制造业] [2014-03-20]
Aimed at the problem of power supply protection on vehicles as the special project platform,making use of the surplus reserve power of vehicles and installing moving shaft generator system is introduced.Dynamics model of vehicle with shaft generator system is established,the impact of shaft generator system to the vehicle is analyzed,and compared with the dynamics of prototype vehicle,the dynamics matching method of vehicle with moving shaft generator system is obtained.
关键词：汽车；轴带发电机系统；备用电源；动力因素
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4138.探索美国和国际中钢渣集料在硅酸盐水泥混凝土中的应用
[非金属矿物制品业,黑色金属冶炼和压延加工业] [2014-03-20]
The issue of sustainability in the built environment is increasingly important, particularly in the transportation sector.In this research, laboratory investigations of the use of steel slag as a portland cement concrete (PCC) aggregate were reviewed. Much of this research took place outside the United States.
关键词：钢铁；钢渣集料；硅盐酸水泥混凝土
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4139.一种新的高强度外包钢混凝土复合梁的性能研究
[黑色金属冶炼和压延加工业,非金属矿物制品业] [2014-03-20]
On the basis of the theoretical study and application of ordinary steel-encased concrete composite beam,this paper will focus on a new high-strength steel-encased concrete composite beam,and mainly studies high-performance steel Q420 and Q460,as well as high-strength concrete C60 and C80.Besides,an experimental study of 5 simply-supported beams is made,and the load-deflection curves of new SCCB are analyzed.The calculation formula of load which changes with depth of section and bending strength of the cross section is also analyzed.It is suggested that the calculated results announced should be identical with the experimental results.
关键词：钢铁；高强度外包钢混凝土复合梁；高性能；承载力
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4140.提高汽车侧向稳定性的四轮转向系统集成控制研究
[汽车制造业] [2014-03-20]
This paper presents the design of integrated control for four-wheel steering (4WS) vehicle.A vehicle nonlinear dynamics model is built based on a lateral dynamics simplified linear model.A more accurate sideslip and yaw rate controller is used for lateral dynamics model of 4WS vehicle.Then a vehicle model based on the individual channel and partial decoupling design paradigm is identified from the vehicle dynamics. The results of a stability analysis and simulations are presented to show that the 4WS integrated control system can markedly enhance good vehicle lateral maneuverability.
关键词：汽车；四轮转向系统；侧向稳定性；集成控制系统；部分解耦
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