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Increasing industrial concentration, promoting structural adjustment and upgrading, establishing the oil refining and ethylene refining enterprises mainly, including petrochemical downstream products, new materials, fine chemicals and chemical production as the main contents with a clear industrial chain of petrochemical parks, are the petrochemical industry development trend in China.
The petrochemical park fire and explosion evolution dimension are not only related with the accident causes, devices type and size, storage of flammable and explosive chemical materials, and regional security planning, but also related with the fire fighting techniques and equipments and other emergency technique factors.
[7] Xu Ming, Duo Yingquan, and Wu Tsung: "Chemical Industry Park security plan development history," China Safety Science Journal, vol. 18(2008),p.141
[9] Li Chuangui, Yanjun, and Liu, "based on the amount of the overall risk analysis of chemical park safety planning study," China Safety Science Journal, vol. 19, 2009
[10] WEI Li-jun, Duo Yingquan, Yu Lijian, Liu Ji, and Wu Zongzhi: "Chemical Industry Park planning methods and procedures of security," China Safety Science Journal, vol. 17, (2007), p. 45 [11] W.

Scholars have proposed a variety of overall strengthening schemes for this model [1, 2, 3], but all of them have the disadvantages of underutilization of materials and high construction cost.
Component name Section form Material Bailey chord Double channel steel 16Mn steel Bailey abdominal rod I8 16Mn steel Bailey support frame Angle steel 63×4 A3 steel Strengthening chord Double channel steel 16Mn steel Supporting steel tube φ609×16mm A3 steel Multiscale Finite Element Model Load Analysis.
Acknowledgments This research was funded by the National Science Foundation for Young Scientists of Jiang Xi (No. 20161BAB216113), the Natural Science Foundation of Jiang Xi (No. 20171BAB206050), and the China Postdoctoral Science Foundation (No. 2017M611993).
Journal of huazhong university of science and technology (natural science edition), 2018, 46 (5):110-114
Journal of Southeast University (Natural Science), 2009, 39 (1): 85-90.

Chernyak, Mechanical properties of steel in the area of small plastic deformations, Kiev, Academy of Sciences of the Ukrainian SSR, 1962, p. 104
Kondrashev, Assessment of the safety factor of machine parts subject to asymmetric loading, Eastern European Journal of Advanced Technologies. 6/7(66) (2013) 8-12
[18] Schijve Jaap, Fatigue of structures and materials, 2nd Ed.
Kudryavtsev, Yu.G.Matvienko, Zones of localization of plastic deformation in pre-deformed thin-sheet plastic materials, Investigation of the strength of materials and structures of nuclear technology, Moscow, Energoatomizdat, 1984, pp. 68-73
Molokov, Assessment of damage to ferrite-pearlitic steels under low-cycle loading conditions, Proceedings of the conference “Science.

Introduction A lot of new materials with special functions have been developed continuously, such as composite materials, high melting point materials with high rigidity, ceramic materials etc, which can not be processed and formed with high efficiency and low cost by traditional machining.
It is benefit to spay the materials with a high melting point such as ceramic powders.
Reinforcing materials used for backing treatment often consist of epoxy resin, alloys with low melting point and resin-based composite materials containing metal powders.
E0210024 from the Nature Science Foundation and Grant No. 2002H044 from the program of High Science and Technology of Fujian Province in China.
Neiser: Journal of Thermal Spray Technology Vol. 7(1998), p. 392

Catalytic Synthesis and Growth Mechanism of Multi-branched Carbon Fibers by Cupric Solution Precursors Qiuxiang Wang 1, a, Qian Zhang 1,b and Lifeng Dong 1, 2, c, * 1 College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.
China 2 Department of Physics, Astronomy, and Materials Science, Missouri State University, Springfield, Missouri 65897, USA awangqiuxiang0814@gmail.com, bzhangqian@qust.edu.cn, cdonglifeng@qust.edu.cn Keywords: Cupric solution; Chemical vapor deposition; Carbon fibers; Growth mechanism Abstract.
Because of their excellent properties carbon fibers have been applied for microwave absorbing material, lithium ion battery [4, 10, 11], capacitors [12], and biosensors [13, 14].
Acknowledgements This work was partially supported by the National Natural Science Foundation of China (51172113), the Shandong Natural Science Foundation (JQ201118 and ZR2012EMM006), the Taishan Overseas Scholar program from the Shandong Province Government, PR China, the Qingdao Municipal Science and Technology Commission (12-1-4-136-hz), and a Sabbatical Leave Award from Missouri State University.
Cui: Journal of Functional Materials (In Chinese) Vol. 39 (2008), p. 151 [17] X.

Boundary Conditions Constraints, material specifications and gravity effects were considered.
Some physical and materials properties are shown in tables 1 and 2.
Groover, Fundamentals of Modern Manufacturing, Materials, Processes and Systems., 4th, Ed., Danvers: John Wiley & Sons, Inc., 2010, pp. 507-512
Unsacar, "Design, Development and Testing of a Turning Dynamometer for Cutting Force Measurement," Materials and Design, vol. 27, no. 10, pp. 839-846, 2006
Rao, "Design and fabrication of dynamometer to measure radial component of cutting force and experimental investigation of optimum burnishing force in roller burnishing process," Indian Journal of Science and Technology, vol. 3, no. 7, pp. 737-742, 2010.

Fluorite, in a range of 2-3%, is usually added in the raw materials to catalyze the MgO reduction reaction [7-10].
Experimental Experimental Materials.
F Contents in Input and Output Materials for the Early Pilot Tests [15].
F in Input Materials and Output Mg Slag for the Present Pilot Tests.
An Mg slag recycling as building materials is important for saving valuable natural resources and decreasing the global warming impact.

Proceedings of the World Congress on Engineering and Computer Science, WCECS, 20-22, San Francisco, USA, (2010)
Ward, Effect of heat treatment and cooling rate on the microscopic structure of portland cement clinker, Journal of Research of the National Bureau of Standards, 26, 49-64, (1941)
Ranade, Rotary cement kiln simulator (RoCKS): Integrated modeling of pre-heater, Journal of Calciner, Kiln and Clinker Cooler, Chemical Engineering Science, 62 (9), 2590-2607, (2007)
Xie, Optimization and simulation of sinter cooling process, CIESC Journal, 62 (11), 3081-3087, (2011)
Wu, Investigating the general mathematics model of gas-solid heat transfer in the cooling process of high-temperature clinker and sintered material, Energy for Metallurgical Industry, 29 (2), 27-30.clinker .

Experimental procedure Materials.
Yu: Metallic Functional Materials, Vol. 13 (2006) No.5, p.13. 　　
Yu: The Chinese Journal of Nonferrous Metals, Vol.17 (2007) No.10, p.1637.
Wang: Materials Science and Engineering, A 402(2005) p.92
Shen: Material Science & Technology, Vol. 7 (1999) Sup, p.38.

In the later research work, the method provided can be applied simulation process by changing the process parameters for numerical simulation, so as to enhance the efficiency of double-metal composite seamless trial, avoiding the waste of materials and time.
The materials was made of external tube carbon steel Q235, which the Elastic modulus was 210GPa, Poisson's ratio was 0.3 and internal tube SUS316 stainless steel, which the Elastic modulus was 196GPa, Poisson's ratio was 0.3.
The material model was obtained by using the experimental material's true stress-strain curve.
Applied Mechanics and Materials, 2014, 470: 197-204
Journal of Northeastern University: Natural Science, 2001, 22(6):639-642.