【正文】 nsultant, MPA), MoldFlow Plastics Insisht (injection molding simulation analysis, MPI), and MoldFlow Plastics Xpert (injection molding process control specialists, MPX). Under normal circumstances, the most monly used MPI, is mainly used for injection molding process simulation to get the best number and location of the gate, reasonable flow channel system and cooling system, and cavity size, gate size, runner size and cooling systems to optimize the size and the injection molding process parameters may also be optimized. Moldflow Software Moldflow analysis techniques can be divided into three kinds, namely, Midplane, Fusion and 3D [23]. 4 Moldflow analysis of Midplane Midplane (in the surface flow) applications began in the 20th century, the 80s. The grid is a threenode triangular element, its principle is the 3D geometric model of simplified geometric model of the neutral surface (to be created in the model grid the middle of the wall thickness), using established simulation analysis of the neutral surface, ie to flow in plane to simulate threedimensional solid flow. The analysis of technological development has been very mature and stable, and the advantages for the analysis of speed and high efficiency. The simulation shown in Figure 3. Based on the flow of surface flow simulation of injection molding technology, software applications, the longest, widest range. But the practice shows that, based on the surface flow simulation software in the application of technology that has significant limitations, specifically as follows: (1) The user must construct a midsurface model. Using manual directly from the physical model structure in the surface model is very difficult and often takes a lot of time and can not be converted from other CAD models. (2) can not be described in a number of threedimensional features. If they can not describe the inertia effect, gravitational effects on melt flow, which fail to predict jet phenomenon, melt the forefront of Quan phenomena. (3) The use of CAD phase of the product model and stages of the use of CAE analysis model is not unified, so that the inevitable second modeling, CAD and CAE systems integration can not be achieved. 5 Moldflow39。 and domestic in the Eighth FiveYear period began research in this area, and now Huazhong University of Technology HSCAE software and Zhengzhou University, Z Mold software in China in the leading position. Moldflow software is specialized in injection molding CAE software and consulting for Moldflow39。 There are also foreign The TMCONCEPT, CADMold, Fidap, Stirm100, Polyflow and China39。 Injection Molding CAE Technology 0 Introduction Plastic products from product design to production, including molding plastic products design, mold design, mold manufacturing and injection molding process parameters and several other main areas. The traditional injection mold design mainly rely on the designer39。s experience, while the injection molding process is very plex, plastic melt flow properties of different and everchanging products and die structure, process conditions vary, forming various defects, mold design often require repeated trialmode, maintenance mode can be put into production, with little of a successful, identify problems, not only to readjust the process parameters, or even to modify the plastic products and molds, not only timeconsuming and laborious, but also reduces product development time . The use of injection molding CAE technology in mold manufacturing prior to simulate injection molding process (including filling, packing and cooling) and the early detection of problems, optimize mold design and process conditions set to reduce the number of test mode in order to improve production efficiency, has bee a injection molding technology is an important direction of development. 1 The history of Injection Molding CAE technology Injection Molding CAE technology is based on plastics processing rheology and heat transfer of the basic theory, the melt in the mold cavity in the flow, heat transfer physics, mathematical model, using numerical solution method of constructing the theory, the use of puter visualization technology image, visually simulate the dynamics of the actual shape of the melt filling and cooling process, an analysis techniques. The 20th century, 60 years, the United Kingdom, the United States and Canada and other countries of the scholars, such as JRPearson (United Kingdom), JFStevenson (America), MRKamal