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V-N微合金化高强度球扁钢截面均匀性研究陈雪慧1,杨才福1,张倩1,苏航1(1.北京市钢铁研究总院结构材料研究所)摘 要:针对高强度球扁钢截面性能不均匀的特点,采用金相显微镜,透射电镜,相分析等试验分析方法,研究了V-N微合金化对其截面性能均匀性的影响.结果表明,V-N微合金化技术改善了球扁钢的截面性能均匀性,显著提高了球头心部的性能,这和V在球扁钢不同部位的不同析出行为密切相关.球头心部比其他部位具备更充分的V(C,N)析出动力学条件,析出强化效果更明显,弥补了因组织差异带来的强度损失,减小了截面性能差异.<......
Effect of SrO Content on Structure,Thermal Properties and Chemical Stability of Bi2O3-B2O3-ZnO-SrO Low-melting Glass for Si-Al Alloy Package伍治伦1,ZHANG Ming1,ZHANG Chunyan1,孟范成1,林慧兴21. College of Materials Science and Engineering, Chongqing University of Technology2. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences摘 要:
) Abstract: The solder joint reliability of a 0.5mm lead pitch, 240-pin quad flat package(QFP) was studied by nonlinear finite element analysis(FEA). The stress/strain distributions within... is equal to or less than 0.65mm, then it is called a fine-pitch surface mount component(SMC)[2]. As a typical model of fine-pitch SMC, the lead pitch of quad flat package(QFP) has been developed from early......
Preparation and Properties of Asphalt Modified with a Composite Composed of Waste Package Poly(vinyl chloride) and Organic MontmorilloniteChangqing Fang,Xiaolong Liu,Ruien Yu,Pei Liu,Wanqing LeiCollege of Printing and Packing Engineering, Xi’an University of Technology摘 要:A composite composed of waste package poly(vinyl chloride)(WPVC) and organic......
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Abstract: A self-designed test machine of continuously semisolid extending extrusion was made to produce the flat bar of A2017 alloy. The slurry of A2017... extrusion; flat bar; microstructure
......板坯电磁成形载荷计算方法及分布特性
来源： 《中国有色金属学报1998年第3期》——黄尚宇 常志华 王立峰 吴莉花 张猛 姜奎华 王仲仁
:U272.3; V211 文献标识码:A 文章编号:1672-7207(2008)05-1029-06 Aerodynamic performance for container flat wagon passing in ... on unsteady N-S equation of three dimensional and compressible viscous fluid, the aerodynamic performance for the fast special container flat wagon at the speed of 160 km/h was calculated numerically......
Transport Behaviour of La3＋ with Flat－Sheet－Sandwich Supported Liquid Membrane Extraction System易涛,严纯华,李标国,李洁,朱国斌,杜启云,王利生,胡小平摘 要:ＴｒａｎｓｐｏｒｔＢｅｈａｖｉｏｕｒｏｆ Ｌａ３＋ ｗｉｔｈ Ｆｌａｔ－Ｓｈｅｅｔ－ＳａｎｄｗｉｃｈＳｕｐｐｏｒｔｅｄ ＬｉｑｕｉｄＭｅｍｂｒａｎｅＥｘｔｒａｃｔｉｏｎＳｙｓｔｅｍＹｉＴａｏ(易涛)；ＹａｎＣｈｕｎｈｕａ(严纯华)；ＬｉＢｉａｏｇｕ?..关键词:......
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济钢智能自动化维检系统的建立与应用范鹍1,刘云雷1(1.山东省济南市济钢集团有限公司自动化部)摘 要:针对大型钢铁企业在自动化维检方面降低维检成本,保障设备稳定运行,减少维检人员的需求,通过分析自动化维检工作内容,提出并实施了济南钢铁股份有限公司智能自动化维检系统.系统在控制层数据安全无扰采集的基础上,实现了基于Web的智能化维检,在满足企业需求的同时,搭建了一个良好的管理平台,提升了企业的维检管理水平,并为扁平化管理提供了条件.该系统已在济钢部分生产线投入运行,效果良好.关键词:自动化维检； 数......
