Abstract
As well known, the application of plating treatments to a product shaped by deep-drawing into a battery case for a portable telephone from a disc-shape sheet usually accompanies difficulty, since the case has a narrow and high depth. To solve this problem, the application of a plating treatment to a sheet before deep-drawing is a key point. Moreover, keeping the plated film not to come off during deep-drawing process is also important. In this study, the Ni-plated sheet having diffusion layers between the Ni plate and a base steel was deep-drawn by 12 steps to manufacture a battery case. Mechanical properties and surface conditions of the deep-drawn sheet were investigated. Results obtained in this study show that a good Ni plated battery case was successfully manufactured.
