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再沸器疲劳失效分析 贾国栋1,史进1,刘步宇2,谢国山1,孙亮1,姜海一1,王军2,陈照和1 (1.中国特种设备检测研究中心,北京,100013;2.北京燕山石化,化学品事业部,北京,102500) 摘要:在奥氏体不锈钢制再沸器的上管板与壳程筒体焊接的管板一侧发生蒸气泄漏.采用化学成分分析,力学性能测定,宏,微观检验,有限元应力计算及振动测试等方法对再沸器的材料,加工工艺和工作状况进行了综合分析.结果表明,管板材料性能较差,在制造该再沸器过程中受焊接热循环和较高应力水平的影响,造成在热影响区形成微裂纹,进而又在工作介质和应力的作用下在该区域发生疲劳损伤而形成宏,微观裂纹致蒸气泄漏.提出了......
J. Cent. South Univ. Technol. (2011) 18: 1677-1684 DOI: 10.1007/s11771-011-0888-y Combined effect of steel fibres and steel rebars on impact resistance of high performance concrete CHEN Xiang-yu..., Dalian 116023, China; 2. Centre of Mathematics, University of Minho, Braga 4700, Portugal ? Central South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: The impact properties......
): 022301. DOI: 10.1115/ 1.4038071. [12] KANG X M, WANG L. Experimental analysis of axial load internal circulation ball screw pair of friction torque and the impact [J]. Applied Mechanics and Materials... J. Cent. South Univ. (2021) 28: 1357-1376 DOI: https://doi.org/10.1007/s11771-020-4537-1 Precision loss of ball screw mechanism under sliding-rolling mixed motion behavior QI Bao-bao(齐宝宝)1, 2......
Article ID: 1003-6326(2005)06-1429-04 Effect of ball milling and electrolyte on properties of high-voltage LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O4 spinel FANG Hai... 410083, China; 2. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China) Abstract: Effect of ball milling and electrolyte on the properties of high-voltage......
J. Cent. South Univ. (2016) 23: 2542-2549 DOI: 10.1007/s11771-016-3315-6 Numerical analysis of loaded stress and central displacement of deep groove ball bearing YANG Lei(杨磊)1, 2, DENG Song(邓松)1, 2... Heidelberg 2016 Abstract: The aim of this work is to develop a three-dimensional model of deep groove ball bearing to investigate the loaded stresses and central displacements of bearing rings......
Air flow patterns and noise analysis inside high speed angular contact ball bearingsZHAI Qiang(翟强), YAN Ke(闫柯), ZHANG You-yun(张优云), ZHU Yong-sheng(朱永生), WANG Ya-tai(王亚泰) (Key Laboratory for Modern Design and Rotor Bearing System of Ministry of Education(Xi’an Jiaotong University), Xi’an 710049, China;)Abstract:The vortex formed around the rolling ball and the high pressure region formed around......
; Abstract: A method was presented to prepare aluminide coatings on metals by combining the pack aluminizing with the ball impact process. This technique applied mechanical vibration to a retort, which was loaded with pack-aluminizing powder, specimens and alloy balls. Pack aluminizing was carried out with repeated ball impact, which......
]. 金属学报, 1997, 33(4): 381?385. YANG Jun-you, ZHANG Tong-jun, CUI Kun, HU Zheng-hua. Analysis of impact behavior during ball milling[J]. Acta Metallurgica Sinica, 1997, 33(4): 381?385. ...-MgO powders prepared by high-energy ball milling WU Cai-xia1, 2, ZHU Shi-gen1, 2, MA Jun1, 2, ZHANG Mei-lin1 (1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China; 2......
Ni(OH)2 particles synthesized by high energy ball milling LIU Yuan-gang(刘元刚), TANG Zhi-yuan(唐致远), XU Qiang(徐 强), ZHANG Xiao-yang(张晓阳), LIU Yong(柳 勇) School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China Received 17 October 2005; accepted 6 March 2006 Abstract: High energy ball milling(HEBM) method was applied to synthesize nickel hydroxide......
Article ID: 1003-6326(2005)05-1077-04 Impact toughness of tungsten films deposited on martensite stainless steel HUANG Ning-kang(黄宁康), YANG Bin(杨 斌), WANG De-zhi(汪德志) (Key Laboratory... steel Charpy specimens by magnetron sputtering followed by electron beam heat treatment. Charpy impact tests and scanning electron microscopy were used to investigate the ductile-brittle transition......
