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| 1 | Convex shaping process simulation during counter-rotating electrochemical machining by using the finite element method显示文摘In counter-rotating electrochemical machining(CRECM), a revolving cathode tool with hollow windows of various shapes is used to fabricate convex structures on a revolving part. During this process, the anode workpiece and the cathode tool rotate relative to each other at the same rotation speed. In contrast to the conventional schemes of ECM machining with linear motion of a block tool electrode, this scheme of ECM is unique, and has not been adequately studied yet. In this paper, the finite element method(FEM) is used to simulate the anode shaping process during CRECM, and the simulation process which involves a meshing model, a moving boundary,and a simulation algorithm is described. The simulated anode profiles of the convex structure at different processing times show that the CRECM process can be used to fabricate convex structures of various shapes with different heights. Besides, the variation of the inter-electrode gap indicates that this process can also reach a relative equilibrium state like that in conventional ECM. A rectangular convex and a circular convex are successfully fabricated on revolving parts. The experimental results indicate relatively good agreement with the simulation results. The proposed simulation process is valid for convex shaping prediction and feasibility studies as well. | Wang Dengyong Zhu Zengwei Wang Hongrui Zhu Di | 2016 | Chinese Journal of Aeronautics2016，29，2： | 8 |
| 2 | A review of soil heavy metal pollution from mines in China: Pollution and health risk assessment显示文摘 | Zhiyuan Li Zongwei Ma Tsering Jan van der Kuijp Zengwei Yuan Lei Huang | 2014 | Science of the Total Environment2014，，： | 7 |
| 3 | Effects of Shielding Coatings on the Anode Shaping Process during Counter-rotating Electrochemical Machining显示文摘Electrochemical machining(ECM) has been widely used in the aerospace, automotive, defense and medical industries for its many advantages over traditional machining methods. However, the machining accuracy in ECM is to a great extent limited by the stray corrosion of the unwanted material removal. Many attempts have been made to improve the ECM accuracy, such as the use of a pulse power, passivating electrolytes and auxiliary electrodes. However, they are sometimes insufficient for the reduction of the stray removal and have their limitations in many cases. To solve the stray corrosion problem in CRECM, insulating and conductive coatings are respectively used. The different implement processes of the two kinds of coatings are introduced. The effects of the two kinds of shielding coatings on the anode shaping process are investigated. Numerical simulations and experiments are conducted for the comparison of the two coatings. The simulation and experimental results show that both the two kinds of coatings are valid for the reduction of stray corrosion on the top surface of the convex structure. However, for insulating coating, the convex sidewall becomes concave when the height of the convex structure is over 1.26 mm. In addition, it is easy to peel off by the high-speed electrolyte. In contrast, the conductive coating has a strong adhesion, and can be well reserved during the whole machining process. The convex structure fabricated by using a conductive iron coating layer presents a favorable sidewall profile. It is concluded that the conductive coating is more effective for the improvement of the machining quality in CRECM. The proposed shielding coatings can also be employed to reduce the stray corrosion in other schemes of ECM. | WANG Dengyong ZHU Zengwei WANG Ningfeng ZHU Di | 2016 | Chinese Journal of Mechanical Engineering2016，29，5： | 6 |
| 4 | The pulsed high magnetic field facility and scientific research at Wuhan National High Magnetic Field Center显示文摘Wuhan National High Magnetic Field Center(WHMFC)at Huazhong University of Science and Technology is one of the top-class research centers in the world,which can offer pulsed fields up to 90.6 T with different field waveforms for scientific research and has passed the final evaluation of the Chinese government in 2014.This paper will give a brief introduction of the facility and the development status of pulsed magnetic fields research at WHMFC.In addition,it will describe the application development of pulsed magnetic fields in both scientific and industrial research. | Xiaotao Han Tao Peng Hongfa Ding Tonghai Ding Zengwei Zhu Zhengcai Xia Junfeng Wang Junbo Han Zhongwen Ouyang Zhenxing Wang Yibo Han Houxiu Xiao Quanliang Cao Yiliang Lv Yuan Pan Liang Li | 2017 | Matter and Radiation at Extremes2017，2，6： | 5 |
| 5 | Abrasive-assisted Nickel Electroforming Process with Moving Cathode显示文摘In traditional electroforming process for revolving parts with complex profiles, the drawbacks on surface of deposits, such as pinholes and nodules, will lead to varying physical and mechanical properties on different parts of electroformed components. To solve the problem,compositely moving cathode is employed in abrasive-assisted electroforming of revolving parts with complicated profiles. The cathode translates and rotates simultaneously to achieve uniform friction effect on deposits without drawbacks. The influences of current density and translation speed on the microstructure and properties of the electroformed nickel layers are investigated. It is found that abrasive-assisted electroforming with compound cathode motion can effectively remove the pinholes and nodules,positively affect the crystal nucleation, and refine the grains of layer. The increase of current density will lead to coarse microstructure and lower micro hardness, from 325 HV down to 189 HV. While, faster translational linear speed produces better surface quality and higher micro hardness, from 236 HV up to 283 HV. The weld-ability of the electroformed layers are also studied through the metallurgical analysis of welded joints between nickel layer and 304 stainless steel. The electrodeposited nickel layer shows fine performance in welding. The novel compound motion of cathode promotes the mechanical properties and refines the microstructure of deposited layer. | Jianhua REN Zengwei ZHU Chunqiu XIA Ningsong QU Di ZHU | 2017 | Chinese Journal of Mechanical Engineering2017，30，2： | 4 |
| 6 | Mechanical electrodeposition of bright nanocrystalline nickel显示文摘A new mechanical electrodeposition technology was proposed, and nanocrystalline nickel deposit with bright and smooth surface was prepared in the bath without any additive agents. Unlike traditional methods, the novel technology employed dynamical hard particles to continuously polish the cathode surface and disturb the nearby solution during electrodepositing. Experimental results showed that the polishing effect of hard particles can effectively prevent the hydrogen bubbles and impurities from adhering on the deposit surface and avoid the production of pits, pinholes and nodules. Furthermore, comparing with the deposit prepared by traditional methods, the one prepared by the novel technology was substantially refined with grain size ranging from 30 to 80 nm. Every diffraction peak's intensity of the deposit was reduced, the preferential orientation degree of (200) decreased and those of (111) and (220) increased. The microhardness notably increased. The magnetic properties were also changed with decreased saturation magnetization and increased coercive force. It was also found that variation of current density and cathode rotational speed could affect the structure and properties of the nickel deposits prepared by this technology. | ZHU ZengWei ZHU Di QU NingSong | 2008 | Science China(Technological Sciences)2008，51，7： | 3 |
| 7 | Effects of process parameters on mechanical properties of abrasive-assisted electroformed nickel显示文摘A cathode mandrel with translational and rotational motion, which was supposed to obtain uniform friction effect on surface, was employed in abrasive-assisted electroforming for revolving parts with complex profile. The effects of current density, translational speed and rotational speed on the deposit properties were studied by orthogonal test. The tensile strength,elongation and micro hardness value were measured to find out how the factors affected the properties. The optimized results show that changes of current density affect the tensile strength of nickel layer most, while translational speed has the most remarkable influences on both elongation and micro hardness. The low rotational speed affects the properties least. In this experiment, a smooth nickel layer with tensile strength 581 MPa, elongation 17% and micro hardness 248 HV is obtained by the orthogonal test. | Ren Jianhua Zhu Zengwei Zhu Di | 2016 | Chinese Journal of Aeronautics2016，29，4： | 2 |
| 8 | Eco-industrial parks: national pilot practices in China显示文摘 | Ling Zhang Zengwei Yuan Jun Bi Bing Zhang Beibei Liu | 2009 | Journal of Cleaner Production2009，，5： | 2 |
| 9 | 显示文摘 | ZENGWei(曾威) WANGJun-Ying(王俊影) DONGLin(董琳) etal | | TianjinKejiDaxueXuebao0，，： | 1 |
| 10 | Conserving water by optimizing production schedules in the dyeing industry显示文摘 | Jiang Wei Yuan Zengwei Bi Jun | 2010 | J Clean Product2010，18，16： | 1 |
| 11 | Experience in corrective surgery for Ebstein's anomaly in 139 patients显示文摘 | Renfu Z Zengwei W Hongyu Z | 2001 | J Heart Valve Dis2001，10，3： | 1 |
| 12 | 血停跳液对复杂型先天性心脏病心肌保护作用的研究显示文摘在52例复杂先天性心脏病心内矫正术中,应用血停跳液(BCP)加强心肌保护,与晶体停跳液(CCP)比较。记录转流前和再灌注10min时心肌ATP、环磷酰胺(CP)含量及术前,术后6、12、24、48、72h内肌酸磷酸激酶(CPK)、肌-脑混合肌酸磷酸激酶同工酶(CK-MB)、天门冬氨酸氨基转移酶(AST)、乳酸脱氢酶(LDH)变化。结果显示:BCP组心肌ATP、CP贮备较CCP组增加;术后72h内,BCP组CK-MB值低于CCP组。其峰值只是CCP组的55.2%(P<0.05)。血停跳液能增加心肌能量储备,提高心肌抗缺血的能力,减轻心肌损伤的程度。BCP心肌保护的效果优于CCP. | zhu Ping Wang Zengwei (Zhujiang Hospita1 , First Military Medical University, Guangzhou 5l0282) | 1995 | 解放军医学杂志1995，20，6： | 1 |
| 13 | Environmental risk source management system for the petrochemical industry显示文摘 | Chen Qinqin Qian Jia Zengwei Yuan Lei Huang | 2013 | Process Safety and Environmental Protection2013，，： | 1 |
| 14 | The Circular Economy: A New Development Strategy in China显示文摘 | Zengwei Yuan Jun Bi | 2006 | Journal of Industrial Ecology2006，2006，： | 1 |
| 15 | Eco-industrial parks:national pilot practices in China 显示文摘 | ZHANG Ling YUAN Zengwei BI Jun | 2010 | Jour-nal of Cleaner Production2010，18，5： | 1 |
| 16 | Eco-efficiency analysis of industrial system in China: A data envelopment analysis approach显示文摘 | Bing Zhang Jun Bi Ziying Fan Zengwei Yuan Junjie Ge | 2008 | Ecological Economics2008，，1： | 1 |
| 17 | The Circular Economy: A New Development Strategy in China 显示文摘 | Zengwei Yuan Jun Bi Yuichi Moriguichi | 2006 | Journal of Industrial Ecology2006，10，1： | 1 |
| 18 | Abrasive polishing assisted nickel electroforming process显示文摘 | Zhu Di Zhu Zengwei Qu Ningsong | 2006 | CIRP Annals-Manufacturing Technology2006，55，1： | 1 |
| 19 | Abrasive Polishing assisted nickel electroforming process 显示文摘 | Zhu Di Zhu Zengwei | 2006 | CIRP Annals-Manufacturing Technology2006，55，1： | 1 |
| 20 | Eco-efficiency analysis of industrial system in China:A data envelopment analysis approach显示文摘 | Zhang Bing Bi Jun Fan Ziying Yuan Zengwei Ge Junjie | 2008 | Ecological Economics2008，68，1： | 1 |
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