REDUCTION OF RUPTURE STRENGTH OF METAL CANS

摘要

To guard against explosion, the rupture strength of an aluminium or alloy electrolytic capacitor can 11 is weakened in a controlled manner by impressing a partial shear pattern 10 in its base. When the can is subjected to excessive pressure a slow leak initially develops, as shown at the centre of a cross, and a further pressure rise is required before the leak rate is augmented by a progressive separation of the pattern along the shear lines. The capacitor section is located within the can by dimples in the base 12/13. IMAGE