摘要
在叶片锻造过程中,由于变形量大,锻出的叶片会出现如褶皱、裂纹这样的缺陷。为了提高生产效率,一般要求在螺旋压力机上一次锻造成形。因此,采用合理的毛坯结构形式在最小成形载荷下来获得最低程度的缺陷就显得十分重要。常规用来选择叶片锻坯合理结构形式的方法有诸多缺点,采用有限元方法将会在很大程度上弥补这些不足。
Because of huge deformation of turbine blade in the process of forging, the defects, such as folds and cracks, appear in blade forgings.In order to increase the production efficiency, the blade forgings are usually made by the hammer within one stroke using screw press. So it is very important to use suitable shape of forging stocks to get the best forgings in the condition of the lowest loads. There are many demerits in the traditional method to optimize the forging stock shape of blade in factory, but these demerits can be greatly overcome through the 3-D FEM simulation on computers.
出处
《热加工工艺》
CSCD
北大核心
2007年第1期74-76,共3页
Hot Working Technology
