| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold for continuous casting of a lead-acid battery grid capable of remarkably prolonging the mold life even in sever heat cycles only by slightly increasing a mold production cost. SOLUTION: A casting mold of a lead-acid battery grid is engraved with an NC engraving machine in a mold material having a surface hardness of HRc25 to HRc35, made of an iron alloy containing C, Si, Cr, Mo, and V, and the lead-acid battery grid is continuously casted using a ring-shaped mold material 1, a casting mold 2 formed on the surface, and a rotating shaft 3 of the mold material.
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