PROCESS FOR PRODUCING ALUMINUM MATERIAL FOR ELECTRODE OF ELECTROLYTIC CAPACITOR, ALUMINUM MATERIAL FOR ELECTROLYTIC CAPACITOR, METHOD FOR PRODUCING ELECTRODE MATERIAL FOR ELECTROLYTIC CAPACITOR, AND ALUMINUM ELECTROLYTIC CAPACITOR

摘要

A process for producing an aluminum material for an electrode of an electrolytic catacitor, wherein an aluminum slab is sequentially subjected to a hot rolling, a cold rolling and a final annealing, characterized in that it comprises a step of contacting the aluminum material with a heated body after the above hot rolling step, to thereby heat the material. The step of contacting with a heated body may be carried out at an arbitrary point of the whole process after the hot rolling. It may be carried out one or more times in the period from the start to the end of the cold rolling step. It may be carried out after the cold rolling and before the final annealing, or after the final annealing.