Pollution Prevention for Metal Platers - Dragout Reduction (Spanish): Chapter 04: Slow Withdrawal Rates and Increased Drainage Time
Chapter Abstract: This is clip 4 of 7 for this video. Withdrawing parts at a slower rate and allowing them to drain for a longer period of time are the best ways to reduce Dragout. On manual lines, try to slowly remove parts by counting to five as the part is removed from the bath. For hoist lines, make sure the hoist is set to the slowest rate possible. Fast withdrawals leave a thicker layer of Dragout on the part. Parts should be hung and allowed to drain completely before moving them on to the rinse tank.
Author: US EPA Region IX / MFASC / CMTC
Publication Date: 1997
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|Chapter 01: Introduction to Pollution Prevention and Dragout|
|Chapter 02: Overview of Techniques / Proper Parts Racking|
|Chapter 03: Process Bath Controls and Chemical Additions|
|Chapter 04: Slow Withdrawal Rates and Increased Drainage Time|
|Chapter 05: Proper Use of Available Dragout Reduction Equipment|
|Chapter 06: Review|
|Chapter 07: Conclusions|
Partially funded by:
Nebraska Department of Environmental Quality, NDEQ