| 摘要 |
A zinc ball mixing tank is provided to reduce the input amount of sulfuric acid by regularly managing the zinc concentration within the plating solution. A zinc ball mixing tank(500) comprises a plating solution supply conduit(SP) in which the plating solution is flowed in from a plating solution storage tank; a zinc ball supporting plate(530) in which a plurality of penetration holes(TH) is punched in the surface; an overflow hole(540) is punched on the top circumference; a solution receiver(550) installed in the lower part of the overflow hole; a recovery pipe(RP) connecting to the lower part of the solution receiver; and a zinc ball input hole(520), a sulfuric acid input hole(521) and an inlet hole(522) in the upper side of the zinc ball mixing tank.
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