Abstract
The relationship between the dome reversal pressure of a DI (drawn and ironed) beverage can, with a body diameter of about 53 mm, and the base profile is investigated experimentally. The material used is 0.18 mm-thick steel with a tensile strength of 466 MPa in the rolling direction. The factors studied in the base profile are the base diameter, the rim radius, the dome shoulder radius, the dome radius and the dome depth. Within the limits before the occurrence of normal snap-through buckling of the dome, the dome reversal pressure is improved by decreasing the base diameter, increasing the dome depth or increasing the dome shoulder depth. Due to the rim inside wall moving towards the region of the rim radius with bottom growth, the dome shoulder depth is a very important factor. A good correlation between the dome reversal pressure and the dome shoulder depth is obtained. Three base profiles that have sufficient dome reversal pressure are proposed for a ‘202 diameter’ (about 53 mm diameter) DI can made of a 0.18 mm-thick steel sheet with tensile strength of 466 MPa in the rolling direction. The relationship between the dome reversal pressure and the thickness and the strength of the material is obtained for the three base profiles. Using this relationship, one can calculate the thickness and strength ( σ B−0) needed to withstand any dome reversal pressure required.
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