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Mold design and process experiment of open die cold extrusion of spline shaft Liu Yingchun Weifang University of Science and Technology, ShanDong WeiFang, china; liuych@163.com Key words: spline shaft; Open die extrusion; The mold; Local upsetting Abstract: in view of the 125 cc motorcycle transmission of spline shaft, spline is discussed in open die extrusion die structure characteristics and the influence of the spline forming mold springback problem, put forward the choice among the formability of open die extrusion into the die Angle, can avoid squeezing into the mold mouth occurs when local upsetting. 1.
The introduction Now with the method of open die cold extrusion forming of spline shaft has got wide attention both at home and abroad, the advanced technology has many characteristics, such as saving material, high quality, high efficiency.
The formability of spline open die extrusion experiment 3.1 the formability and calculation are put forward Spline when open mold squeeze in into the mold mouth is easy to appear the phenomenon of local upsetting, this is because the billet extrusion P per unit area is greater than the yield strength of material sigma S.
[3] diao seal, Zhang Kaifeng LY12 hemispherical pieces of the dynamic explicit finite element simulation of deep drawing process [J] journal of metal forming technology, vol. 1, 20200
[5] Wan Min Yang Yuying, Li Shuoben mechanics modeling and numerical analysis of conical part stamping process [J] shaping engineering journal, vol. 7, No. 4 Dec., 2000

Xu: Journal of Transducer Technology, Vol.23 (2004) pp.86-88
Zhou: New Carbon Materials,Vol.16 (2001), pp.73-78
Yu: Chinese Journal of Electron Devices, Vol.27 (2004) No.3, pp.527-532 (in Chinese)
Gou: Material Dymanic (Science Publishing Company, China 2005)

The DPs is composed by function parameters which mean what to do, structure parameters which represent how to do and constraints which are restrictions about material, physical rules and other attributes of the structures.
What kinds of Constraint equations are established is determined by the features of structures, which could be function, material and geometry.
[2] G.Q.Zhang, W.G.Zhang and Y.F.Zhong: Journal of Computer Aided Design & Computer Graphics, Vol.17 (2005), p. 328-332
[3] H.J.Somg and Z.H.Lin: Chinese Journal of Mechanical Engineering, Vol.39 (2003), p. 83-87
[4] X.T.Wei, J.R.Tan and S.C.Wang: Mechanical Science and Technology, Vol.18 (1999), p. 1013-1015

Effect of fluidized-bed carrier material on biological ferric sulphate generation.
Journal of Membrane Science.
Journal of Hazardous Materials.

Materials and methods Reagents and instruments Co3O4 nano particle and deionized water was prepared by Analysis Science Centre of Northeastern University.
Journal of Tianjin University.
Journal of Inorganic Material.

In this paper, the effects of different additives and other factors on limestone dissolution rate was studied by using acid titration method. 2.Experimental 2.1 Experimental material The limestone samples from Ji county of Tianjin were analyzed by the complexometric titration method and flame atomic absorption spectroscopy in order to determine the contents of CaCO3 and MgCO3, the results are shown in Table 1.
Optimization of a wet FGD pilot plant using fine limestone and organic acids [J].Chemical Engineering science, 2001, 56:3275-3287
Hazardous Materials B,2000,79(1):159-171
Journal of Chemical Engineering of Chinese Universities,2003,17(5): 540-544
Journal of the air Pollution Control Association,1981,31(12):1249-1253

Design attack angle analysis for fixed-pitch variable-speed wind turbine Jie Zhao1,a, Xiongwei Liu2,b, Lin Wang3,c, Xinzi Tang4,c 1School of Mechanical Engineering, Xiangtan university, Xiangtan, 411105, China 2,3,4School of Computing, Engineering and Physical Science, University of Central Lancashire, UK azhaojiehunan@163.com, bxliu9@uclan.ac.uk Keywords: Attack angle, blade design optimization, wind turbine, fixed-pitch, variable-speed Abstract The purpose of this paper is to find the optimum design attack angle for fixed-pitch variable-speed wind turbine blade design, given the base-line wind turbine and the blade airfoil.
One of the major Research and Design areas for innovative wind turbine technologies is the blade design optimization, such as the determining of the optimal composite material [1], and the vibratory load reduction [2].
Journal of Materials Processing Technology, volume 167, Issues 2-3, 30 August 2005, Page 463-471
Chinese Journal of Aeronautics, Vol 17 No.3, August, 2004

At present, the mostly used method for cranes’ fatigue analysis is the nominal stress method: First, based on the S-N curve of the material, considering relevant influence coefficients, the S-N curve of the structure is obtained.
(2) Equivalent stress spectrum Generally, the material’s resistance index is obtained under symmetric cyclic load with zero mean, while the stress spectrum under random load has the mean of not zero.
In this study, the material of the container crane’s key structures is Q235, the coefficients m and C are usually given the values of -4.7059 and 14.357, respectively.
Journal of Hubei University of Technology, (2002).
Journal of Wuhan University of Technology (Transportation Science & Engineering). 31 (2007) 293-295.

Material properties of the model are also defined in ABAQUS, and the definition of material properties is shown in Table.1.
Material properties definition Part name Elastic modulus (M Pa) Poisson ratio Density (t·mm-1) Housing of main reducer 1.73E+05 0.3 7.55E-09 Housing lid of rear axle 2.06E+05 0.3 7.90E-09 Half-axle sleeve 2.06E+05 0.3 7.90E-09 Gear 2.06E+05 0.27 7.90E-09 Bearing 2.10E+05 0.3 7.90E-09 First 20-order modes of the assembly were calculated.
Journal of Vibration and Shock, 2006, 25(1):136-139
Journal of Hefei University of Technology (Natural Science), 2009, 32 (S1):167-170

First, Reaction materials (Deionized Water, Glucose Solution) are preheated in each Double plunger high-pressure metering pump and then will be transferred into a high-pressure tank reactor as soon as they get a certain preheated temperature later.
Experiment Material Glucose: Jinan Limin Pharmaceutical Co., LTD and added deionized-water made into different concentrations; calcium hydroxide: AR (Analytically Pure), TianJin kermel Chemical Agent Development Center; Glycine: AR (Analytically Pure), TianJin kermel Chemical Agent Development Center.
Acknowledgements The authors would like to acknowledge the financial support from the Natural Science Foundation Project of Heilongjiang (E201034).
Destruction of aniline wastewater by supercritical water oxidation[J].JOURNAL OF PETROCHEMICAL UNIVERSITIES, 2005, 18(4): 5-7,11.
A Review on investigation of hydrogen production by biomass catalytic gasification in supercritical water[J].Journal of Chemical Industry and Engineering,2002,53(3) :221-228.