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Karimi Zarchi3,c 1,2,3 Iran University of Science and Technology Engineering, Narmak, Tehran,16844 ,Iran am_ghadi@metaleng.iust.ac.ir, bmansour_soltanieh@iust.ac.ir, cKarimizarchi@iust.ac.ir Keywords: TRD, Borax salt bath, Low & High carbon Ferro Chromium, Diffusion chromium layer, Carbide chromium.
Xiaoxu: Materials Journal of Wuhan University of Technology- Materials Science Edition Vol. 25 (2010), p. 596
Ohta: Material Engineering Vol. 9 (1987), p. 183
Chen: Materials Chemistry and Physics Vol. 91 (2005), p. 192

Nitride-related Compounds Preparation from Waste Aluminum Dross by Self-propagating High-temperature Process Jaeryeong Lee a, Ikkyu Lee b, Heeyoung Shin c, Jonggwan Ahn d, Dongjin Kim e and Hunsaeng Chung f Minerals & Materials Processing Div., Korea Institute of Geoscience and Mineral Resources, 30 Gajeong-dong, Yuseong-gu, Daejeon 305-350, Korea a jrlee@kigam.re.kr, blik7595@hanmail.net, chyshin@kigam.re.kr, ddran@kigam.re.kr, e jkim@kigam.re.kr, fhschung@kigam.re.kr Keywords: Aluminum Dross, Aluminum Oxynitride, Self-propagating High-temperature Process Abstract.
Al-dross with a high Al content is generally called "white dross", which typically occurs as a compact material in large clotted lumps or blocks.
Aluminum powder was also used as a reactant material with the mean size of 34 µm and a purity of 99% (granular shape, Alcoa Inc., USA).
Kevorkijan: Composites Science and Technology, Vol. 59 (1999), p. 1745 [4] T.
Holt: Journal of Materials Science, Vol. 22 (1987), p. 710 [6] H.

Design and Precision Analysis of Muzzle Angle Measurement System Zhou Jian-ping1, 2, Wu Xiao-yun2, a, Zhang Peng-fei2, Gu Guo-hua2 1 School of Mechanical Engineering, Nanjing University of Science &Technology, Nanjing 210094 2Artillery Academy, Hefei, Anhui Province, China, 230031, awuxingky@163.com Key words: Muzzle angle, measurement system, error analysis, precision analysis Abstract: The traditional muzzle angle measurement method measured by optical range quadrant can’t satisfy the demand.
The theoretic axis of the bore is the ligature of section geometry centers in the origination position O and the muzzle A, which is OA. 2 Measurement Principles of Muzzle Angle and Design of Measurement System 2.1 Calculation model of muzzle angle When the firing angle is zero, the largest bending angle of barrel is: (1) Here, ——largest bending angle of barrel when the firing angle is zero; ——bending angle of barrel by self-weight, which can be calculated by: (2) E——elastic modulus of material; K——moment of inertia of section; Q——weight of barrel; L——barrel length out of cradle along the muzzle orientation.
International Journal of Machine Tools &Manufacture. 1999(39):1087-1101
Nanjing University of Science and Technology. 1998,8:1-7-117

Parameters of permanent magnet, focusing coil and tracking coil Material Parameter1 Parameter2 Permanent Magnet Relative permeability 1.06 Remnant flux density（T） 1.4 Focusing coil Current 0.3 (A) 56 turns Tracking coil Current 0.3 (A) 56 turns Figure 3 The simulation results of the spatial distribution of magnetic field (a) The magnetic field produced by the focusing coil (b) The magnetic field produced by the tracking coils (c) The magnetic field produced by the permanent magnet (d) The overall synthetic magnetic field of the actuator Through the simulation, it can be concluded that the magnetic field of the actuator is symmetric to the center of the actuator but not uniform.
Acknowledgements This work was supported by the National Natural Science Foundation of China (51075254), the Shanghai Pujiang Program (11PJ1404000) and the Innovation Program of Shanghai Municipal Education Commission (11YZ16).
Meng, “Research on the focus servo system of DVD”, Master Thesis, Shanghai, College of Information Science and Engineering of Fudan University, 2004
Park, “Dynamic characteristics of stepped cantilever beams connected with a rigid body”, Journal of Sound and Vibration, vol. 255, no. 3, pp. 701-717, 2003

(Nature Science Edition), 08(2007),5-8 ] is (3) As σ is quite small, the high-order terms can be ignored, therefore the simulation results could meet the requirements of the algorithm. 4 Hardware implementation based on FPGA The FPGA chip is EP2CC8Q208C8, one of the CycloneII FPGA of Altera, and it has abundant on-chip resource with 8256 logic elements, 9-bit elements Embedded multiplier, 2 PLL, up to 165888 bits of RAM, and 138 programmable I/Os[[] Weihai Chen, Zhaojin Wen, Zhiyue Xu, Jianhua Wang, Implementation of 2-axis Circular Interpolation for a FPGA-based 4-axis Motion Controller, 2007 IEEE International Conference on Control and Automation Guangzhou, CHINA - May 30 to June 1, 2007:600-605 ], the Verilog HDL hardware description language and TestBench file was written in EDA tool QuartusII 13.0,simulate the function in ModelSim-Altera 10.1d emulator by using TestBench file, then we design the PCB board to get the material arc interpolation controller, and use
This interpolation is able to guarantee all of the interpolation points fall on the arc, and there is no cumulative error[[] Jianxin Jin, Controllable step interpolation method for arbitrary space curves of machine tools in CNC system, Chinese journal of mechanical engineering,04(2000), 95-97 ].
This work is supported by science and technology of Lanzhou, Gansu province, China under grant #213188 References

The Research of Clock Traffic Congestion Model and Synchronization Technology Baifen Liu1, a, Ying Gao2, b 1 School of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang, China 2 School of Basic Sciences, East China Jiaotong University, Nanchang, China achair0088@yahoo.com.cn Keywords: Ethernet, STM32F407VG, Flow model, Delay-constraint routing, Clock synchronization.
Introduction The time is dimensionless order metric the material evolution or events.
Measurement and control precision of the measurement and control system in this industrial environment restricting modern monitoring techniques in the development of modern science and technology.
[5] Shir-Kuan Lin, Chao-Min Wang and Shyh-Jier Wang, “Design and implementation of anti hand shaking position control for a voice coil motor,” Journal of Applied Physics, vol.103, no.7, pp.07F128, 2008.

Numerical Study of Interior Trajectory of Missile Ejection Based on Mechanics Yongquan Liu1,2,a, Anmin Xi1,b , Hongfei Liu1,c 1School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China 2School of Architecture & Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China arichiel_lau@163.com, bxi_anmin@163.com, cliuhongfei_zt@163.com Keywords: interior trajectory simulation, FLUENT, flow field Abstract.
Both the peak value of the calculations and the max. test data are acceptable according to the material of the missile bottom.
[4] Yanhui Tang et al.: Working Process Simulation of Gas and Steam Launching System, Journal of Naval Aeronautical and Astronautical University, Vol.24(2009), p.431-434

Sih. in: Mechanics of Fracture Material Science and Technology Press,London(2004),p.53 [10] S.M.Yin, X.S.Xü, H.Y.Li and G.Wang in: Advanced mathematics (Vol.1), East China University of Science and Technology Press, Shanghai(2004),p.40 [11] K.C.Wu：submitted to International Journal of Fracture(2000).

Introduction Sediment carrying capacity is one of the keys of the sediment study, is the basic of studying material transport, bed scour, coastal evolution and many other problems.
[2]Dou, Fengwu Dong, The carrying capacity of the tidal currents and waves,Chinese Science Bulletin, 40 (1995) 443-446
China Environmental Science Press(1992)
Journal of Hydraulics Division84(1958)

The brittle coal is considered as linear elastic material, and the basic equations for solving the plane problem of elasticity were presented by Muskelishvili [2].
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51074109), by the Major State Basic Research Project (2010CB732005), and by the Program for Innovative Research Team of MOE (IRT1027).
International Conference on Mining Science & Technology (Xuzhou, China, October 18-20, 2009).
Xie: Journal of Sichuan University Vol. 40 (2008), p. 13-21 (in Chinese)