Rinsing

In a dragout /rinsing process, is cold water effective or beneficial after a hot water rinse?


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Q. In a dragout /rinsing process, is cold water effective or beneficial after a hot water rinse?—C.S.

A. Additional rises are almost always beneficial to remove the “contaminant,” whether it is residual cleaner, plating chemicals, etc. However, the final rinse is often the one that usually is reserved for the end of the line. This is because if you counterflow your rinse tanks, some of that heat will be picked up in the rinse tank it is flowing into. Additionally, heating the last tank can aid in the drying process, which is often necessary following most aqueous processing.

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