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Acknowledgements This work was supported by the National Natural Science Foundation of China under Grant no.10772061.
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The writer use the process combined Stereolithography with traditional casting technique, which is most maturerapid prototyping technology at present,to achieve the low cost and high efficiency in the process of foundry practice for the torque converter pump wheel, and achieve the purpose of the rapid manufacturing. 1 Making pump wheel's prototype by Stereolithography 1.1 Stereolithography and its characteristics Rapid prototyping technology has been developed in recent years ,and it is the floorboard which contains of directly according to CAD model to make the fast production samples or parts of completed sets of technology.It integrated with CAD technology, the numerical control technology, laser technology, material technology, and other modern sciences and technology achievements.
Fig. 4 Whole model which contains of the feeding system 2.2 Making the type shell of pump wheel The shell is made up of adhesive and refractory powder and and sand materials,and completed in the process of preparation coating(coating:Silicon sol, ethyl silicate, sodium silicate), dry sand and atherosclerosis.It includes surface, transition layer , back layer and the sealing plasma layer,the surface coating contact with the liquid metal in order to guarantee the surface quality, surface smooth, densification, smooth and solid of the casting.
Acknowledgements This work was financially supported by the Guangxi Science Foundation (No.2011GXNSFF018004), and the Guangxi Scientific and Technological Project (No.11107002-12).
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[2] Cui Hong-bing, Yang Tie-nan, Qian Hui-fen.Manufacturing the modelling core of fired molded by SLS method(Selective laser sintering).Journal of modern manufacturing technology, 2002(9): 23-24

Introduction The most economical method of preparation protective layer is that protective layer is formed on the surface of the material by electrodeposition method.
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Moreover, uniform load on every beam is 25KN/m and the materials of structure are composed of C30 concrete and Q345 steel.
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In the rock cutting process, the mechanical system has highly nonlinear characteristics due to the anisotropic rock materials.
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Aknowledgement National "twelfth five-year" science and technology support plan(Number:2012BAD29B04-4) References [1] Tao Wen quan:The numerical heat transfer (Second Edition) . (2002) [2] M.S.KUBIAK and M.
JAKUBOWSKI:CFD Simulations as a Supporting Tool for Process and Construction optimization in Food Industry Production Practice: A Case Study of a Single Truck Smoking Chamber[J].Italian Journal of Food Science, Vol. 11(2013),P.251 [3] Foster A M, Barrett R, James S J: Measurement and prediction of air movement through doorways in refrigerated rooms [J] .
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It is significant for improving product disassemblability performance and saving time, cost and materials [1-3].Virtual disassembly simulation of varying target component for complex products becomes more necessary when disassembly planning and analysis focus on changing disassembly demand (i.e. maintenance or precious parts recycling).
Table 2 The weight information in the DWHG Edge Contact Combination Disassembly tool Accessed direction Weight <9,1> MF(30) P(4) SD(14) One(3) 51 <19,1> SF(18) P(4) SD(14) One(3) 39 ... ... ... ... ... ... (15,16) FM(30) P(4) H(7) One(3) 44 Acknowledgement This work is supported by the National Natural Science Foundation ,China(No.50905159), the Natural Science Foundation of Zhejiang Province, China(No.Z107416)and the Doctoral Fund of Ministry of Education of China(No.200803340031).
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