新型复合曲面型砧的锻造性能比较

Forging Performance Comparison of New Composite Surface-anvil

以大型钢锭锻造过程为研究对象,通过理论建模和数值模拟,对大锻件变形的均匀性进行研究,将新型复合曲面型砧和传统V型砧的锻造结果进行比较,以求找出在用不同砧子进行锻造时,锻件内部的应力、应变状态。结果表明,复合曲面型砧在锻件组织性能优化上具有优势,其不但能使大型锻件心部得到很好的压实效果,有效地消除了钢锭内部出现的偏析、疏松及缩孔缺陷,而且大型锻件表面金属变形也能得到很好的控制,消除了锻造过程中的难变形区。

Taking the large-scale steel ingot forging process as study object,through theory modeling and numerical simulation,the uniformity of the heavy forging distortion was researched;through comparing the forging effect between V swage block and compound surface swage block,the forging＇s internal stress and strain condition was discussed.The results show that the compound surface swage block in the forging structure and property optimization has superiority,which can enable the large-scale forging core to obtain very well compactive effort,effectively eliminate the segregation,shrink and porosity flaw that appears in the steel ingot interior,also can make the large-scale forging surface＇s metal flow under very good control,and eliminate the difficult deformation range in the forging process.