| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a lead-base alloy grid for a lead-acid battery having excellent mechanical strength, corrosion resistance, and growth resistance. SOLUTION: In the method producing the lead-base alloy grid for the lead-acid battery performing heat treatment in a Pb-Ca-Sn alloy grid containing 0.06 mass% or less calcium, natural aging for 2-750 hours is performed in the Pb-Ca alloy grid before heat treatment. Natural aging is performed in the Pb-Ca-Sn alloy grid for the prescribed hours before heat treatment, a precursor which becomes a nuclear of a deposit is produced before heat treatment, and since the precursor is grown in the deposit by heat treatment, deposition is advanced finely and quickly, a grid having highest strength can be obtained in spite of low Ca content of 0.06 mass% or less, deformation during active material coating can be prevented. Since the Ca content is low, the Pb-Ca alloy has high corrosion resistance and growth resistance and long life. COPYRIGHT: (C)2009,JPO&INPIT |
