ABSTRACT
What makes ¯ushing so di¥erent from the mainstream of cleaning processes? Flushing is truly a unique process with subtleties that can make it di£cult to develop. So what is ¯ushing? Webster’s says it is to “cleanse with a rush of water.” From this simple de©nition the basic idea of a ¯uid moving across a
Overview .......................................................................................................321 What Is Flushing? .........................................................................................321 Why Flush? ....................................................................................................322 How Clean Is Clean? ....................................................................................323 What and When to Flush? ...........................................................................323 Choosing a Solvent .......................................................................................324 Verifying the Process: Is It Really Clean? ..................................................324 Environmental Considerations ...................................................................325 ¤e Virtual System .......................................................................................325 ¤e Iterative Process: A Second System ....................................................327 Match the Process to the Need ...................................................................327 ¤e Final Iteration ........................................................................................328 A Final ¤ought ............................................................................................329 Reference .......................................................................................................329
surface to mechanically remove soils can be visualized. However, what is missing is the idea of cleaning enclosed, basically inaccessible surfaces. ¤is goes beyond blind holes and slots to the concept that parts requiring ¯ushing, to clean internal surfaces, are unable to utilize surface inspection to verify cleanliness. ¤us, the process takes on a completely di¥erent context.
