【正文】 astic 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 technologyInjection Molding CAE technology is based on plastics processing theology 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 (United Kingdom), (America), (Canada) and (America), etc. to carry out a series of plastic melt in the moldtype cavity flow and cooling of basic research. At a reasonable simplification, based on 60 years pleted a onedimensional flow and cooling analysis programs, 70 years to plete the twodimensional cooling analysis programs, and 80 years from the injection molding CAE technology has begun to theoretical research into the practical phase, launched a threedimensional flow and cooling analysis and the study extended to packing, fiber orientation and war page prediction of molecular and other fields. After 90 years carried out into the flow, packing, cooling and stress analysis, the whole process of injection molding processes are integrated technologies, for the injection mold design provides a reliable guarantee that its application is mold design in the history of a major change.2 The role of Injection Molding CAE technologyIt shows the design of injection molds using traditional methods and the use of injection molding CAE technical design features and differences in mold. It can be seen using traditional methods of design of injection mold design success will rely heavily on the experience of designers, but also for plex parts gate position is reasonable or not, the location of the exhaust slot settings, to determine the location of weld lines and so very difficult. Die in delivery will normally take before the test mode after repeated changes, until the products have been qualified, which inevitably led to the extension of the production cycle, and generally difficult to obtain an optimal design and process parameters. The use of injection molding CAE technical design, mold is not true, because of mold design concept stage, can make use of CAE technology in injection molding process simulation flow, making usually only in the mold tryout phases in order to find problems, such as short shots, weld lines or holes appear in the surface appearance of parts and other issues have been avoided. While helping the designer to plete the balance of the system, such as flow channel design, exhaust ducts, setting, rationally determine the injection molding process parameters, etc. , so that usually makes the must be repeated tryout to determine structural parameters 39。 the mold die design and process parameters in the conceptual stage able determine, reduce the mold design and manufacturing cycle and improve the mold design quality.Therefore, the role of injection molding CAE software, mainly as follows:(1) Optimize design of plastic productsPlastic wall thickness, gate number and location of the design of flow channel system for the quality of plastic products have a significant impact. Depends on the experience of the past, designers using manual methods to achieve, timeconsuming effort, but the use of CAE technology quickly design the best products.(2) Optimize the plastic mold designCan be cavity size, gate location and number of flow channel dimensions and cooling systems to optimize the design. On the puter simulation test mold, mold repair mold and improve quality and reduce the number of actual tryout.(3) To optimize injection process parametersSimulation of the injection process and found possible shape defects determine the best injection pressure, clamping force, mold temperature, and melt temperature, injection time and cooling time.This shows that the injection molding CAE technology in terms of improving productivity, reduce mold design and manufacture cycle and to ensure product quality, or reduce costs, reduce labor intensity and so on, have very significant technical advantages and economic significance.3 Injection Molding CAE software types and their detailsTo date, a mature business are more injection molding CAE software, Moldflow Corporation Moldflow software and ACTech, Inc. (February 2000, was Moldflow Merger) and C~Mold software is an excellent representative。 There are also foreign The TMCONCEPT, CAD Mold, Fidap, Stirml00, Polyflow and China s Taiwan region Moldexpeer software applications are relatively wide。 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。s range of products, the pany issued since 1976 the world39。s first set of injection molding CAE software, has been a leading injection molding CAE software market. To 2004, Moldflow Injection Molding CAE software in the global market share of over 75%.MoldFlow software includes three parts: MoldFlow Plastics Advisers(product optimization consultant, MPA), MoldFlow Plastics Insights, MPI), and MoldFlow Plastics Xpert(injection molding process control