| 摘要 |
<p>A lead-acid battery utilizes positive grids made by fabrication techniques other than gravity casting that are treated so as to provide a modified surface, preferably having an Rq value (i.e., root mean square deviation of surface height and depth) of at least 50 greater than that of the untreated surface. Said surface modification may be carried out by media blasting (using glass beads or black diamond grit), steam curing techniques, chemical etching, passing the grid through knurled rolls, or using a water jet. The surface treatment zone is situated in unit (49) in the figure.</p> |
