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Jerusalem Cross单元频率选择表面吸波特性的试验研究张钧秀,周万城,罗发,朱冬梅西北工业大学凝固技术国家重点实验室摘 要:对传统的频率选择表面耶路撒冷十字单元进行优化,并研究单元形状,尺寸,介质层厚度以及金属贴片厚度对含FSS吸波体雷达吸波性能的影响.结果表明,通过设计适当的FSS单元形状,并调节单元尺寸以及贴片层和介质层的厚度,可以实现对吸波体共振频率和反射率值的调整,得到符合设计要求的吸波体.关键词:频率选择表面;耶路撒冷十字;吸波性能;......
氰化尾液除铜 提高金氰化浸出率实践肖晓林1,2,周勋3(1.四川省成都市成都理工大学地球科学学院2.四川省成都市四川省冶金地勘局3.北京科技大学土木与环境工程学院)摘 要:松树南沟金矿氰化厂尾液含铜高,耗氰量大,金浸出率达不到设计指标.为解决这个问题,进行了长时间的试验研究.根据试验结果,采用两步沉淀法除铜,尾液全循环工艺,并进行了工业试验.试验结果表明,采用该工艺可以从氰化尾液中回收铜,提高金氰化浸出率,实现氰化尾液全循环.关键词:氰化； 金浸出率； 氰化尾液； 除铜； 全循环......
Finite element analysis of rolling process for variable cross-section bladeKONG Xiang-wei(孔祥伟), LI Jia(李佳), LI Bin(礼宾) (School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China)Abstract:Due to the variation of the blade cross-section, the deformation stress and strain of the workpiece keep changing during the rolling process and the conventional rolling......
Surface grain refinement mechanism of SMA490BW steel cross joints by ultrasonic impact treatmentBo-lin He,Lei Xiong,Ming-ming Jiang,Ying-xia Yu,Li LiSchool of Mechanical & Electronic Engineering,East China Jiaotong University摘 要:Ultrasonic impact treatment(UIT) is a postweld technique for improving the fatigue strength of welded joints. This technique......
J. Cent. South Univ. (2016) 23: 3153-3159 DOI: 10.1007/s11771-016-3381-9 Parametric analysis of mixed lubrication characteristics in work zone of strip rolling WU Jian-qing(吴建清), LIANG Xiao-ping(梁小平... and outlet speed ratio are determined by integrating differential equations based on rolling parameters. The lubrication characteristics at the roll-strip interface with different surface roughness......
Mechanism transition of cross slip with stress and temperature in face-centered cubic metalsK.Q.Li1,2,Z.J.Zhang1,J.X.Yan1,2,J.B.Yang1,2,Z.F.Zhang1,21. Laboratory of Fatigue and Fracture for Materials...,different mechanisms of cross-slip could take place,depending on the stacking fault energy,applied stress and tempe rature.It is crucial to classify the mechanisms of cross-slip because each mechanism......
advantage lies in the fact that the controller in each layer can be designed specifically for a certain purpose. In this research, a three-layered cross coupling scheme in a four-axis motion control system... ability to achieve high contouring accuracy.Key words:layered modeling; ship model machining; motion control; cross coupling control......
Influence of the finish rolling temperatures on the microstructure and texture evolution in the ferritic stainless steelsFei GAO,Zhenyu LIU,Haitao LIU and Guodong WANG The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China摘 要:The influence of the finish rolling temperature on the microstructure and texture......
Shear deformation and grain refinement in pure Al by asymmetric rolling ZUO Fang-qing(左方青)1, JIANG Jian-hua(蒋建华)1, SHAN Ai-dang(单爱党)1, FANG Jian-min(方建敏)1, ZHANG Xing-yao(张杏耀)2 1. School...; Abstract: Asymmetric rolling(ASR), as one of severe plastic deformation(SPD) methods, was widely used to make ultra-fined materials with enhanced performance. Internal marks......
MODELING OF FERRITE GRAIN GROWTH OF LOW CARBON STEELS DURING HOT ROLLING Y.T.Zhang1,Y.Y.Li1,D.Z.Li1 (1.Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016, China... Q235B during hot rolling. By using this model, the initial ferritegrain size after continuous cooling and ferrite grain growing in coiling procedure canbe predicted. Finally, in-plant trials were......
