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为了精确预测发动机叶片辊轧过程中的温度、应力、应变的分布,优化了辊轧工艺参数。轧辊作为刚体,叶片作为多段线性弹塑性体,建立了以侵蚀为特征的叶片辊轧动力学模型,研究了高精度非线性叶片在热、冷辊轧过程中金属的流变特性。通过对比分析仿真数据,研究了热、冷轧叶片的特点。结果表明:与叶片热轧工艺相比,冷轧时的所需轧制力要大于热轧时的58%,表面残余应力稍大些,应变大小接近相同。该分析结果可为优化叶片辊轧工艺提供借鉴。
In order to accurately predict the distribution of temperature, stress and strain in the rolling process of engine blades, the rolling process parameters are optimized. The roll as a rigid body and the blade as a multi-section linear elastic-plastic body established the blade rolling dynamics model characterized by erosion, and studied the rheological properties of the metal during the hot and cold rolling of the high precision nonlinear blade. Through comparative analysis of simulation data, the characteristics of hot and cold rolled blades were studied. The results show that the required rolling force during cold rolling is larger than that of hot rolling by 58% compared with the hot rolling process. The surface residual stress is slightly larger and the strain is approximately the same. The results of this analysis can provide reference for optimizing the blade rolling process.