论文部分内容阅读
为了提高航空锻件的综合性能,通过等温锻压工艺研究了航空接头锻件的成形过程,采用Deform3D有限元软件对高筋薄壁铝合金航空接头锻件的锻压成形工艺进行了仿真研究,在实验室油压机上开展了缩比(1∶5)锻件的成形工艺实验.研究结果表明:在坯料与模具温度均为450℃、成形速度为0.1 mm/s的等温模锻工艺下,材料变形抗力比常规热模锻降低70%,材料在模腔中的流动性提高,锻件充填完好,锻件变形均匀,应力集中降低;等温锻造工艺可使锻件获得流线顺畅、晶粒细小、力学性能优良的纤维组织,避免了热模锻易出现的涡流、折叠、穿流、充填不满等锻造缺陷;仿真与实验结果吻合,为航空接头锻件锻压成形工艺的制订提供了依据.
In order to improve the comprehensive performance of aviation forging, the forming process of aviation joint forging was studied by isothermal forging process. The forging process of forging for high-strength thin-walled aluminum alloy aviation joint was simulated by Deform3D finite element software. (1: 5) forming process was carried out.The results show that the deformation resistance of the material is lower than that of the conventional hot die at the temperature of 450 ℃ and the forming speed of 0.1 mm / s Forging reduced by 70%, the material flow in the cavity to improve, forging filling intact, forging deformation uniform, reduce stress concentration; isothermal forging process can obtain forging streamline smooth, fine grain, excellent mechanical properties of the fibrous tissue, to avoid The hot die forging prone to eddy current, folding, flow, filling dissatisfaction and other forging defects; simulation and experimental results are consistent, for the aviation joint forging forming process provides the basis.