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Numerical Simulation of High Frequency Electromagnetic Field in Soft Contact Continuous Casting Mold
Online since: February 2012
Authors: Xing Juan Wang, Li Guang Zhu, Peng Tian, Yue Kai Xue, Wei Chen, Wei Tian
Model
In this paper, the size of model and the parameters of simulation are that the power frequency is 20KHz, the current strength is 630A, the coil turns is 5, the coil height is 90mm, the coil width is 40mm, the number of kerfs are 16, the width of slit is 0.5mm, the conductivity of steel is 8.5×10-7, the relative permeability of copper is 1, the relative permeability of air is 1, the relative permeability of filling material is 1.
Acknowledgements This work was supported by the National Natural Science Foundation Project of China(51074063) and the Hebei Province Outstanding Youth Science Foundation Project(E2010000930) References [1] Li TJ, Jin JZ.
A new technology process of materials in the electromagnetic field.
Stability of an interface between viscous fluid subject to a high-frequency magnetic field and consequences for electromagnetic casting [J].Journal of Fluid Meehan1995,287:133.
Acknowledgements This work was supported by the National Natural Science Foundation Project of China(51074063) and the Hebei Province Outstanding Youth Science Foundation Project(E2010000930) References [1] Li TJ, Jin JZ.
A new technology process of materials in the electromagnetic field.
Stability of an interface between viscous fluid subject to a high-frequency magnetic field and consequences for electromagnetic casting [J].Journal of Fluid Meehan1995,287:133.
Online since: December 2014
Authors: Xiao Yu Ye, Xu Luo, Xue Gang Xiong
Panzhihua, Sichuan, China, 617000
2University of Science and Technology Beijing, Beijing, China, 100083
axuegangxiong@163.com, b39440938@qq.com, cyexiaoyupzh@163.com
Keywords: Ti microalloying, liquid chromatography TiN, N content, elongation
Abstract.
Test material and method In order to verify the optimum N content of medium-Ti Q345B, and study the influence of N content on the microstructure and mechanical properties of medium-Ti Q345B, industrial trial production of Q345B with two different N contents was carried out.
Transactions of Materials and Heat treatment, 2010, 31 (12): 71-79
Journal of University of Science and Technology Beijing, 31 (SUPPL. 1): 150-153.
Test material and method In order to verify the optimum N content of medium-Ti Q345B, and study the influence of N content on the microstructure and mechanical properties of medium-Ti Q345B, industrial trial production of Q345B with two different N contents was carried out.
Transactions of Materials and Heat treatment, 2010, 31 (12): 71-79
Journal of University of Science and Technology Beijing, 31 (SUPPL. 1): 150-153.
Online since: February 2022
Authors: Stanislav G. Danilchenko, Anton V. Petrukhin, Konstantin F. Selemenev, Gennady V. Barsukov, Olga G. Kozhus, Dmitry I. Titov
Main Part
The productivity of applying the polymer shell to the surface of the abrasive grain in the fluidized bed is estimated as the mass of the processed material per hour of operation of the installation.
, (3) where t is the time; is the radius-vector of a material point simulating a moving particle at time t; , is its speed and acceleration at this moment; is the Hamilton differential operator by argument , - by argument ; is the six-dimensional elementary volume of the phase space centered at the point where the material point falls with probability at time t (n is the number of particles per volume unit); J is the collision term of the equation; is the density function of the distribution of particles according to their positions in the geometric space and the velocity space at different moments of time; is convolution-scalar multiplication sign.
Funding This research was supported by the Russian Science Foundation, grant no. 20-79-00347.
IOP Conference Series: Earth and Environmental Science, Vol. 50, No. 1, (2017) 012001
The International Journal of Advanced Manufacturing Technology (2021)1-8
, (3) where t is the time; is the radius-vector of a material point simulating a moving particle at time t; , is its speed and acceleration at this moment; is the Hamilton differential operator by argument , - by argument ; is the six-dimensional elementary volume of the phase space centered at the point where the material point falls with probability at time t (n is the number of particles per volume unit); J is the collision term of the equation; is the density function of the distribution of particles according to their positions in the geometric space and the velocity space at different moments of time; is convolution-scalar multiplication sign.
Funding This research was supported by the Russian Science Foundation, grant no. 20-79-00347.
IOP Conference Series: Earth and Environmental Science, Vol. 50, No. 1, (2017) 012001
The International Journal of Advanced Manufacturing Technology (2021)1-8
Online since: December 2011
Authors: Xian Ming Zhang, Bin Chen, Ge Liu
However, each of parameters is a large inertia and delay to wear resistance of the coating, and is slow time-varying and nonlinear,there is hard to build an accurate mathematical model or physical model which be described in many ways, so when studied high velocity arc spraying system modeling and simulation and identification system, generally based on experiences of trial or approximate to describe with multiple linear models at the equilibrium point
of nonlinear systems, which for such a serious arc spraying system how to do a smooth nonlinear change, reducing the small error which is still a lack of effective methods, the fuzzy model identification method is considered to be a feasible method to solve such problems [2-5].
1 Arc spraying materials and methods
In order to obtain performance of the coating, experiments with ZPG-400A arc spraying machine, choose low carbon steel substrate, wire coating for the common wear and corrosion resistance of stainless steel 1Cr13 diameter of
With the spray voltage increased, the coating hardness decreased, and there is a slow downward trend below 30V and a rapid decline tends between 30V-40V in state, because the spray voltage increases, it will increase the temperature of the end of the wire material, the larger droplet size, metal oxide particles, oxide increased, will increase the coating hardness; Maintain the arc voltage between 30V-40V, causing the increase of coating porosity, and the burning of carbon coating also increased ,the carbon content decreased, the result of combined effects, with the spray voltage rise high, the coating hardness decreased.
Acknowledgement This work was financially supported by the Science and Technology of Chongqing Municipal Education Commission funded project (KJ090704, KJ100722); and the Key Science and Technology Research Program of Chongqing (CSTC, 2009AB3234), Chongqing University Innovation Team Project (KJTD201019).
Journal of System Simulation, Vol.20(2008), p. 1246-1250 [4] Bradley D.
With the spray voltage increased, the coating hardness decreased, and there is a slow downward trend below 30V and a rapid decline tends between 30V-40V in state, because the spray voltage increases, it will increase the temperature of the end of the wire material, the larger droplet size, metal oxide particles, oxide increased, will increase the coating hardness; Maintain the arc voltage between 30V-40V, causing the increase of coating porosity, and the burning of carbon coating also increased ,the carbon content decreased, the result of combined effects, with the spray voltage rise high, the coating hardness decreased.
Acknowledgement This work was financially supported by the Science and Technology of Chongqing Municipal Education Commission funded project (KJ090704, KJ100722); and the Key Science and Technology Research Program of Chongqing (CSTC, 2009AB3234), Chongqing University Innovation Team Project (KJTD201019).
Journal of System Simulation, Vol.20(2008), p. 1246-1250 [4] Bradley D.
Online since: October 2011
Authors: Zhi Dong Bao, Shi Mi Peng, Xiao Rui Li, Ya Ning Wang
Interstitial material.
The total content of interstitial material is 10%, of which the matrix content (mainly illite) is 40%, and the average cement content is 6%.
There is no interstitial material between pores and particles around are smooth and clean.
Journal of Jilin University:Earth Science Edition.
Earth Sciences Frontiers.
The total content of interstitial material is 10%, of which the matrix content (mainly illite) is 40%, and the average cement content is 6%.
There is no interstitial material between pores and particles around are smooth and clean.
Journal of Jilin University:Earth Science Edition.
Earth Sciences Frontiers.
Online since: January 2014
Authors: Yun Feng Zhang, Yang Wan, Jing Yao Zhang
Hydrocarbon migration mechanisms of Hailar - Tamsag Basin
Yang Wan1,a ,Yunfeng Zhang1,b, Jingyao Zhang1,c
1Northeast Petroleum University,Daqing,China
( Earth Sciences of Northeast Petroleum University,DaQing, 163318 P.R.China)
awayne617@163.com , b yunfeng4510@163.com , c453608048@qq.com
Key Words:Hailar - Tamsag ;Reservoir distribution
Abstract:Based on the discourse of Hailar - Tamsag Basin description of hydrocarbon accumulation period and the distribution of hydrocarbon accumulation controlling factors, the paper pointed out Hailar - Tamsag basin specific landforms, which has significance to the study of ocean basins hydrocarbon migration mechanisms.
Preparation of Material Surface Structure Similar to Hydrophobic Structure of Lotus Leaf [J].
Journal of Materials Science & Engineering , 2007, 25(4): 602-605
Preparation of Material Surface Structure Similar to Hydrophobic Structure of Lotus Leaf [J].
Journal of Materials Science & Engineering , 2007, 25(4): 602-605
Online since: August 2018
Authors: Orbay Daysal, Ali Kara
In a study related to crash performance of aluminum alloy wheels [7], investigators focused on material and damage modelling by using real wheel samples.
But in real condition, failure strain for a ductile material mainly is dependent upon the stress state that is subjected to.
Besides, proper numerical model in terms of force-displacement curve can be obtained by using stress triaxiality dependent material and damage models.
International Journal of Mechanical and Industrial Engineering (IJMIE) Vol. 1-6 (2012), p.2231-6477
[9] Kamal, M.B., Subramania, G.S., Balabhadruni, N., Oery, T.: Prediction of Aluminum Wheel Distortion under Pothole Impact. 2016 Science in the Age of Experience Conference, Boston, USA, 2016
But in real condition, failure strain for a ductile material mainly is dependent upon the stress state that is subjected to.
Besides, proper numerical model in terms of force-displacement curve can be obtained by using stress triaxiality dependent material and damage models.
International Journal of Mechanical and Industrial Engineering (IJMIE) Vol. 1-6 (2012), p.2231-6477
[9] Kamal, M.B., Subramania, G.S., Balabhadruni, N., Oery, T.: Prediction of Aluminum Wheel Distortion under Pothole Impact. 2016 Science in the Age of Experience Conference, Boston, USA, 2016
Online since: September 2013
Authors: Yap Ping Zhang, Si Yang Wang, Yu Wei, Yong Li Zhang
Figure 3 Finite Element Model of the Head-on Collision between Heavy truck and Rigid Guardrail
Through the import of the geometric model, mesh generation, material definition, contact definition and so on, the finite element model of the whole vehicle is established, and. it includes 29092 nodes and 24878 units.
In the collision process, the dynamic response of each parts of heavy truck involves in the big deformation mechanical process, such as geometric nonlinearity, material nonlinearity and complex contact friction problem, and numerical method mainly based on finite element method is very suitable for this kind of research.
Mathematical Models & Methods in Applied Sciences, 2012, 22(11) [2] Wen He, Weigang Zhang, Zhihua Zhong.
Vehicle Science, 2007, 55: 175~183
European Journal of Mechanics a solid, 2006, (22): 15
In the collision process, the dynamic response of each parts of heavy truck involves in the big deformation mechanical process, such as geometric nonlinearity, material nonlinearity and complex contact friction problem, and numerical method mainly based on finite element method is very suitable for this kind of research.
Mathematical Models & Methods in Applied Sciences, 2012, 22(11) [2] Wen He, Weigang Zhang, Zhihua Zhong.
Vehicle Science, 2007, 55: 175~183
European Journal of Mechanics a solid, 2006, (22): 15
Online since: June 2012
Authors: Jian Xin Deng, Ze Wu, Jun Zhao
It was thought that a reduction in this problem could be achieved by developing advanced tool materials [2,3], optimizing tool geometries, application of coating tools[4], or developing self-lubricated tools[5, 6].
Experimental procedures The selected cutting tool material for this study was cemented carbide (WC/Co) with the flowing properties: hardness 91.5 HRA, flexural strength 1200 Mpa, thermal conductivity 50.2 W/m·k, thermal expansion coefficient 5.5×10-6/℃, density 13.1 g/cm3.
Acknowledgements This work is supported by “the National Natural Science Foundation of China (51075237)”, “the Taishan Scholar Program of Shandong Province”, “the Natural Science Foundation of Shandong Province (ZR2010EZ002)”, “the Independent Innovation Foundation of Shandong University (2011JC001)”, “the Specialized Research Fund for Doctoral Program of Higher Education (20110131130002)” and “973 Program (2009CB724402)”.
Chen: Journal of Beijing Polytechnic University Vol. 15 (1989), p. 96-106 [In Chinese] [9] ISO 3685: Tool life testing with single point turning tools (International Organization for Standardization, Geneva 1993).
Experimental procedures The selected cutting tool material for this study was cemented carbide (WC/Co) with the flowing properties: hardness 91.5 HRA, flexural strength 1200 Mpa, thermal conductivity 50.2 W/m·k, thermal expansion coefficient 5.5×10-6/℃, density 13.1 g/cm3.
Acknowledgements This work is supported by “the National Natural Science Foundation of China (51075237)”, “the Taishan Scholar Program of Shandong Province”, “the Natural Science Foundation of Shandong Province (ZR2010EZ002)”, “the Independent Innovation Foundation of Shandong University (2011JC001)”, “the Specialized Research Fund for Doctoral Program of Higher Education (20110131130002)” and “973 Program (2009CB724402)”.
Chen: Journal of Beijing Polytechnic University Vol. 15 (1989), p. 96-106 [In Chinese] [9] ISO 3685: Tool life testing with single point turning tools (International Organization for Standardization, Geneva 1993).
Online since: May 2007
Authors: Li Lei, Gao Yang Zhao, Huang Li Zhang, Ren Zhong Xue, Yuan Qing Chen
Preparation of YBCO Superconducting Films by Sol-gel Process
Gaoyang Zhaoa, Huangli Zhang, Renzhong Xue, Yuanqing Chen and Li Lei
School of Material Science and Engineering, Xi'an University of Technology, No.5, Jinhua South
Road, Xi'an, Shaanxi, 710048, China
a
zhaogy@xaut.edu.cn
Keywords: YBCO; sol-gel; superconducting film; chelator
Abstract.
The amount of fluorine(F) in the precursor solution prepared with the TFA salts for Ba, Y, and Cu as starting materials(all-TFA),was so large that the calcinations was time-consuming and that large amount of HF was resulted in the heat treatment, which influences the properties of YBCO film.
This work is financially supported by the National Natural Science Fund of China (No:904401009), and by the National Key Foundational Research Foundation (No:2003CCA 03300).
Cima, Physica C 403 (2004) 191-199 [4] Sukeharu Nomoto, Ryo Teranishi , Akihiro Sato, Hiroshi Fuji, Yuji Aoki, Teruo Izumi, Yuh Shiohara, Physica C 426-431 (2005) 966-972 [5] Takeshi Araki, Toshiharu Niwa, Yutaka Yamada, Izumi Hirabayashi, Junko Shibata ,Yuichi Ikuhara, Kazumi Kato, Takeharu Kato,Tsukasa Hirayama, Journal of Applied Physics. 92 (2002)3318-3325 [6] Yoshitaka Tokunaga, Tetsuji Honjo, Teruo Izumi , Yuh Shiohara ,Yasuhiro Iijima, Takashi Saitoh , Tomotaka Goto , Atsuya Yoshinaka,Akimasa Yajima, Cryogenics 44 (2004) 817-822 [7] Y.
The amount of fluorine(F) in the precursor solution prepared with the TFA salts for Ba, Y, and Cu as starting materials(all-TFA),was so large that the calcinations was time-consuming and that large amount of HF was resulted in the heat treatment, which influences the properties of YBCO film.
This work is financially supported by the National Natural Science Fund of China (No:904401009), and by the National Key Foundational Research Foundation (No:2003CCA 03300).
Cima, Physica C 403 (2004) 191-199 [4] Sukeharu Nomoto, Ryo Teranishi , Akihiro Sato, Hiroshi Fuji, Yuji Aoki, Teruo Izumi, Yuh Shiohara, Physica C 426-431 (2005) 966-972 [5] Takeshi Araki, Toshiharu Niwa, Yutaka Yamada, Izumi Hirabayashi, Junko Shibata ,Yuichi Ikuhara, Kazumi Kato, Takeharu Kato,Tsukasa Hirayama, Journal of Applied Physics. 92 (2002)3318-3325 [6] Yoshitaka Tokunaga, Tetsuji Honjo, Teruo Izumi , Yuh Shiohara ,Yasuhiro Iijima, Takashi Saitoh , Tomotaka Goto , Atsuya Yoshinaka,Akimasa Yajima, Cryogenics 44 (2004) 817-822 [7] Y.