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As China's aerospace industry to a modern, high-speed direction, lightweight aerospace tools increasingly urgent requirement to aluminum and steel trend is growing. Especially lightweight requiring high levels in aircraft, spacecraft, and certain machinery and equipment and other important structural parts, in recent years, extensive use of aluminum castings and forgings to replace the original steel structure. Along with China-made large aircraft project started, a large aluminum forgings research has become the focus of attention. In the current view large aluminum forgings has the following three main difficulties: the strict quality requirements, process complexity, high production costs. In this paper, large aluminum forgings forging process and production status at home and abroad are briefly introduced, select the parting plane as a typical large aluminum forging parts, described in detail in aluminum forgings and Numerical Simulation of Forming Technology CAD CAE two areas work. Because large aluminum forgings shape complex structure, its feasibility, stability, forming quality (including full shape, folding, organizational deficiencies), material utilization and how to reduce load and improve die life, are forming process in formulating its The focus must be considered. In this paper, three-dimensional modeling software CATIA CAD platform under the large aluminum forgings and die design process analysis. For its forming process several key technical problems, using the finite element numerical simulation software Deform its forming process simulation. Through numerical simulation, optimization of the structure of the pre-shape forgings, die structure and blank size, reaching the optimization of process parameters to optimize mold structure, the purpose of elimination of forming defects. A comprehensive analysis of large aluminum forgings forming process friction coefficient, press speed, billet preheating temperature on the maximum forming load impact and friction coefficient, press speed, mold hardness influence the amount of wear on the mold, and through minimal polynomial two squares fit between them have been investigated. Finally, experimental method, the process plan and mold design rationality and scientific validated, the simulation results were compared with the experimental situation, summed up the successful experience of the research. Through this research projects will forging process, finite element theory, numerical simulation technology and mold CAD technology combine to achieve the shorten product development cycles, improve die life, lower costs and other purposes. The research topics of similar large-scale production of aluminum alloy forgings and related mold design to provide theoretical and practical basis, and can be directly used to guide production.
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