A vertical composite ring rolling process was used to manufacture small grooved ring parts,and the ring rolling forming process of small grooved ring parts was simulated by Simufact finite element software and verified on D51 ring rolling machine.The numerical sim-ulation results reveal the distribution and evolution laws of forming factors such as geometry,strain and temperature in the ring rolling process.To study the influence of different shapes of drive rolls on ring rolling forming,the numerical simulation study of drive rolls with different angles was carried out.The results show that drive roll angle of 25.4° can produce greater rolling force and internal plastic strain,but it is easy to produce elliptical defects and insufficient filling of mold.Therefore,selecting a moderate angle can guarantee the ring rolling quality of workpiece.By comparing the numerical simulation results before and after idle rolling,it is found that the ellipse de-fect can be significantly improved and the size uniformity of ring parts can be improved by idle rolling.
关键词
复合环轧成形/小型凹槽环件/成形因素/主动辊夹角
Key words
composite ring rolling/small grooved ring parts/forming factor/drive roll angle
维普
万方数据