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Numerical simulation analysis on cold closed-die forging of differential satellite gear in car Yaozong Zhanga, *, Jianbo Huangb , Xue Lin a , Quanshui Fang a a School of Material Science and Engineering, He'nan University of Science and Technology, Luoyang471003, He'nan,PR China b Salira ( China) Optical Network Systems, Ltd,Shanghai201203,PR China *Corresponding author: zyz@mail.haust.edu.cn (Y.Z.
Although the gear cutting technology can guarantee the stability of production, but the technology has low productivity, low utilization of materials, high spending of equipment.
The material used in experiment was pure industry aluminum.
On consider of the product practice where the simple billet is hoped to use, combine with the admissible stress of the mold material, the Ø20×38.2 column billet was chosen.
Liang, Development of double-action hydraulic die-sets for flashless-die-forging,J.Journal of Jilin University of Technology (Natural Science Edition).4(2004)544-546

About 100 grams of polystyrene material was pyrolysis per batch.
Styrene is used as the main raw material for polystyrene production.
This is consistent with the results of research conducted by Muis (2019), who has examined the process of pyrolysis using raw materials in the form of polystyrene plastic at a temperature of 400°C where the amount of liquid product produced increases with an increase in the ratio of natural zeolite catalyst addition [12].
Kinetics Modeling of Waste Plastic Mixture Pyrolysis for Liquid Fuel Production.International Journal of Innovative Technology and Exploring Engineering (IJITEE). pp.1116-1120
Series: Materials Science and Engineering.

The reasons are probably that debris flow is weakening in force or intensity and the supply of material source is becoming gradually less and fine, or it resulted from gravity differentiation[23].
Acknowledgments This study was supported by the National Natural Science Foundation of China (No. 40238059) and the special grand national science-technology project of china (No. 2008ZX05023).
Li: submitted to Journal of Hydrodynamics Ser.
Gong: submitted to Earth Science (Journal of China University of Geosciences) (2004) (In Chinese)
Shanmugam: submitted to Earth-Science Reviews (2002).

Method Material Three kinds of soil, clay, loam and sand were considered and taken from Hunan province in china.
Acknowledgements This study received financial support from the Key Study Project of National Natural Science Foundation of China (50939006), the National 973 Program of China (2006CB403404)，the Key technologies of “Three Red Lines” management in river basin based on the water cycle and its accompanying process (2013ZY02), the Study on Water Ecological Civilization Construction Based on Dualistic Water Cycle and Associated Process Integrated Simulation (2013QN02), and the Creative Research Group Fund Project of National Natural Science Foundation of China (51021006).
Journal of Hydrology, 2006, 324: 10-23
Stratified soil infiltration characteristics during rainfall.Journal of Soil and Water Conservation,2012, 25(5):217-219, 223
Advances in Water Science, 2012, 23(1): 59-66

Shenyang institute of automation of Chinese academy of sciences and Beijing Institute of Technology have studied the transmission of navigation system and motion planning problem respectively.
In order to simplify the calculation of the system, the analysis of the moment of inertia is as follows: 1) The DC servo motor plays a leading role to the moment of inertia, and it occupies a large share in the whole system. 2) The transmission device and the gear mechanism are usually made of aluminum material, the value of inertia converted onto the motor axis is small.
Acknowledgements This paper is supported by the National Science Fund for natural youth (61105099), Shenyang city science and technology project (F12-277-1-70).
Journal of Interventional Cardiac Electrophysiology, 21(1), 19-26
International journal of computer assisted radiology and surgery, 2009, 4(4): 307-315

Study on Mineral Blending Models for Poly-metallic Open-pit Mine Li Dia, HU Nai-lianb, Li Guo-qingc, Gong Jiand State Key Laboratory of High-Efficient Mining and Safety of Metal Mines (University of Science and Technology Beijing), Ministry of Education, China: Beijing, 100083 alidilidi6@sina.com, bhnl@ustb.edu.cn, cqqlee@ustb.edu.cn, dgjd8722@163.com Keywords: mineral blending; poly-metallic deposit; multi-objective model solving Abstract.
The recovery rate of copper and molybdenum is 85% and 70% according to the data material in this mine.
Aknowledgement Supported by the National Natural Science Foundation of China (Grant No. 51104010) Supported by the Fundamental Research Funds for the Central Universities (Grant No.
Journal of University of Science and Technology Beijing. 2002(3): 239-242
Journal of University of Science and Technology Beijing. 2010(9): 1107-1112

The particle density gradually decreases between the surface of the material and the electrode and is stable in the area of 0.08-0.1m.
Acknowledgments This study was supported by National Natural Science Foundation of China (grant no.
Journal of Vacuum Science & Technology. 2014, A 32: 021303
Journal of Physics D: Applied Physics. 2016, 49: 195203
Particle simulation methods for studies of low-pressure plasma sources, Plasma Sources Science & Technology. 2011, 20: 024001

When compared to traditional materials [7,8].
Materials and Methods Materials.
Graphene materials information from the supplier.
Chemistry of Materials, Chemistry of Materials. 2(1990) 557–563
Bilewicz, Synthesis and modification of reduced graphene oxide aerogels for biofuel cell applications, Materials Science-Poland. 33 (2015) 292–300

Ren, Physical metallurgy of Ti-Ni-based shape memory alloys, Progress in Materials Science, 50 (2005) 511-678
Some recent developments, Materials Science and Engineering A, 378 (2004) 2-10
Van Humbeeck, Phase stability at martensitic transformation in Zr-based shape memory intermetallics, Materials Science Forum, 738-739 (2013) 15-19
Van Humbeeck, Phase transformations and shape memory effect in alloys of Zr-Ni-Co system, Materials Science Forum, 738-739 (2013)123-127
Odnosum, High temperature martensitic transformation and shape memory behavior in HfIr intermetallic compound, Materials Science Forum, 738-739 (2013) 72-76.

The utilization of natural materials provides benefits to the environment in terms of degradability.
They are high specific strength and modulus materials, low priced, recyclable and are easily available.
Materials and Methods Materials.
CCD Camera Lens Stage Fig. 7: Optical microscope equipment Materials and Methods Surface Roughness Test.
Aditiawati, “Asian Journal of Plant Sciences Review Article Review on Quality Enhancement of Bamboo Utilization : Preservation , Modification and Applications.”