Dragin / Dragout Rinsing

Description

• Dip the part in the same rinsing solution before and after the plating bath

Advantages

• Process chemicals (rather then pure water) are transferred into the process bath through dragout
• Up to ½ of the chemicals lost from a process tank can be carried back
• Reduce the concentration in later rinse by up to ½

Limitations

• Can cause a build-up of contaminants

Implementation Process

• Use one tank, or hydraulically connect two tanks (one on either side of the process bath)
• Ideal for systems that have low evaporation
• Train and monitor employees – give incentives for superior performance

Resource

• Cushnie, George C. Jr. Pollution Prevention and Control Technology for Plating Operations. National Center for Manufacturing Sciences, Ann Arbor, MI, 1994.
• Finishing.com