Deepdrawing Forming with Ceramic Granules as Press Transfer Medium

Ceramic granules with four diameters were selected as pess transfer medium,and the deepdrawing forming experiments of columnar parts were carried out.The results showed that the transition region from the bulging region to the drawing region was easy to rupture,and the forming ability of the sheet increased with decrease of the diameter.When the quantity of ceramic granules was constant,and the ceramic granules diameter was larger than 0.6 mm,the forming ability of the sheet increaseed with the decrase of the diameter.The forming ability of the sheet didnt increase when the ceramic granules diameter was decreased to 0.6 mm.