ローラダイによるコルゲート容器の成形性

抄録

Deep drawing, which is one of the press working, is a processing technique for forming a seamless bottomed cup from a single metal plate. We attempted to form a container having a corrugated shape on the side wall part using deep drawing. In order to reproduce the corrugated shape on the side wall of the cup, steel balls were arranged in the shoulder of the die without gaps. In addition, the balls rotate freely during forming. The blanks were commercially extra-low carbon steel SPCC and austenitic stainless steel SUS304. The initial diameter and thickness of blank of SPCC are 70 to 95 mm and 0.5 mm. The initial diameter and thickness of blank of SUS304 are 70 to 85 mm and 0.3, 0.4, 0.5 mm. The metal sheets were successfully drawn without the cracks. It was found that the corrugated cups were successfully formed by using the roller die.