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 Posted: Sun 14:54, 09 Jan 2011 Post subject: moncler daunenjacke Based on computer simulation o |
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Based on computer simulation of the filling characteristics of EPC
This topic of a 110t-class aluminum smelter to magnetic field coupling simulation calculated the magnetic field inside the furnace and the flow field, for the aluminum smelter design and application of electromagnetic stirrer reference. While promoting EMS in the aluminum industry in the application. Stirrer length 4.3m, height 0.6m, magnetic stirrer and the melt distance of 0.8m, the model shown in Figure 1. Figure 1 Model diagram of a physical model and mathematical model legislation l'2 simplify the calculation, the magnetic field of a 1.1 during the realistic simulation of physical model for the flow of molten aluminum, molten aluminum on the magnetic stirrer and the 1:1 size of building mode. Trapezoidal cross-section aluminum smelter where the nominal capacity of 110t, the melt surface area of 60m, depth 0.9m; stirred flow calculation, make the following assumptions and simplifications. ① melt is incompressible conductive fluid, the characteristic parameters of molten aluminum, such as viscosity, conductivity and magnetic permeability are scalar constants; ② in the mixing process, ignoring the surface slag layer and the impact of fluctuations on the flow; ③ not consider the flow of molten aluminum on the magnetic field. Received date :2007-09-30 Fund Project: Inner Mongolia Natural Science Foundation of China (200607010708) dielectric tube first author: Huang Jun, male, born in 1980, Master, Inner Mongolia University of Science and Technology of Materials and Metallurgy, Inner Mongolia ( 014010), telephone; 13664037796, E-mail; hjun8420 @ 126. COrn Therefore, EPC Riser design and casting process are needed and different measures of traditional casting cavity. EPC in the design of commonly used when the end of Riser Note program. Also in the pouring liquid metal at the same time, in the light cast around the escape from the bubble of gas, so that negative pressure can increase the degree of mold to accelerate the gas to escape and reduce the air gap pressure level,[link widoczny dla zalogowanych], so that the filling process more smoothly, to ensure filling the continuity and integrity, access to quality castings. 3 Conclusions (1) lost foam casting process of a bubble in a liquid metal by sand 3 interaction and the role of the media, the existence of liquid metal and foam air gap asked to form a resistance to filling, making the lost foam casting process and space casting cavity vary greatly, and the filling speed is much slower than the casting cavity. (2) EPC the filling process, due to air gap spacing and gas escape the changing capacities, may lead to the filling speed for the present cycle of change. References [1] Cui Ying Ju, Lee, Liu Hongwei, et al. SIMULATIONS EPC ordinary casting process ij]. Materials Technology, 2006,6 (2): 3336. [2] Chen Yao Jian, Kelvin Wong, Kang Jinwu. EPC injection material filling process of foam beads Study ij]. Special Casting & Nonferrous Alloys, 2005,25 (7) :436-438. [3] Chen Yao Jian, Kelvin Wong, Kangjin Wu,[link widoczny dla zalogowanych], et al. EPC technology at home and abroad Progress EJ]. Special Casting & Nonferrous Alloys, 2005,[link widoczny dla zalogowanych],25 (10) :623-626. [4] ZHU Li-juan, Dong Xiuqi. EPC within the liquid metal flow in the type [J]. Casting, 2005 (6) :603-605. [5] Tian Xuefeng, Fan 19 fields, Huang Naiyu. AZ91 alloy filling process of EPC research [J]. Materials and Metallurgy, 2006 (3) :226-230, [6] Lv Zhigang, Kelvin Wong, ginger is not home, and so on. Of EPC characteristics of filling factors [J]. Modern Cast Iron, 2001 (1) :12-14. [7] Du Qiang, LI Dianzhong, Hu Zhiyong, casting filling process flow and heat transfer in the coupled simulation [J]. Casting, 2000 (6) :336-339. [8] Hu Hongjun, Ming-Bo Yang, Gong Xibing, et al. Numerical simulation of casting process optimization [J]. Journal of Materials Science and Engineering, 2006 (6): 5153. [9] ZHU Li-juan, Dude Xi, Dong Xiuqi, et al. EPC casting system of choice [J]. Casting, 2006 (12): 13,191,321. [1O] MIRBAGHERIH, SERAJZADEHS, VARAHRAMN. Modellingoffoamdegradationinlostfoamcastingprocess [J]. MaterialsandDesign ,[link widoczny dla zalogowanych],2006,27:115-124. [11] Yuan Zizhou,[link widoczny dla zalogowanych], Qiu Shan, Kuang Yi. Lost foam casting process simulation [J]. Special Casting & Nonferrous Alloys, 2005,25 (2) :113-114. (Editor: Zhang Zheng He) 119
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