摘要
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 forecast the distribution of temperature, stress and strain of aero-engine blade accurately in the rolling process,the process parameters were optimized. Roller was regarded as rigid body. Blade was regarded as segmental linear elastic-plastic body. Dynamic model of rolling process with erosion features was established. Metal fluidity of high precision nonlinear blade in the cold and hot rolling process was researched. Through the comparison with simulation data, hot and cold rolling characteristics of blade were researched. The results show that compared with hot-rolled blade,rolling force of cold-rolled is greater 58% than that of hot-roUed,and blade surface has larger residual stress, and strain is close to the same. Analysis results can provide reference for optimization of blade rolling process.
出处
《热加工工艺》
CSCD
北大核心
2013年第13期84-86,91,共4页
Hot Working Technology
关键词
叶片
热轧
冷轧
金属流动性
blade
hot rolling
cold rolling
metal fluidity
