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The high cost of plating solution is attributed to the tin concentrate chemical, which accounts for 57% of the plating chemical expenses. In this study, the consumption of this chemical was reduced by placing more pure tin (Sn) anode bars in the plating cells. The rationale was that since more tin can be provided by the anode bars, less tin concentrate chemical will be consumed. This study has confirmed that the introduction of more pure Sn anodes in the plating cells has compensated for the inherent loss of tin in solution due to oxidation and drag-out. The implementation of this change realized a reduction of 44% in the monthly cost of chemicals used by the Plating Section.
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