[pic] [pic]separate cleaning From Wikipedia, the free encyclopedia Jump to: navigation, search separate cleaning is essential to many industrial subprogrames, as a prelude to surface close or to protect small components. Electroplating is contributionicularly sensitive to part cleanliness, since molecular layers of oil can preclude adhesion of the coating. ASTM B322 is a standard guide for cleaning metals introductory to electroplating. Cleaning processes let in solvent cleaning, hot alkalescent detergent cleaning, electrocleaning, and acid etch. The nigh common industrial screen out for cleanliness is the waterbreak test, in which the surface is well rinsed and held vertical. Hydrophobic contaminants such as oils cause the water to ivory and break up, allowing the water to clog out rapidly. Perfectly clean metal surfaces be deliquescent and will retain an unbroken winding-clothes of water that does non bead up or drain off. ASTM F22 describes a edition of t his test. This test does not detect hydrophilic contaminants, but the electroplating process can displace these easily since the solutions are water-based. Surfactants such as soap reduce the sensitivity of the test, so these must be thoroughly rinsed off. |Contents | |[hide] | |1 Definitions and classifications | |2 Elements and their interactions | |2.
1 Parts and materials to be cleaned | |2.2 Contaminations | |2.3 Charging | |2.4 Place of cleaning | |2.5 Cleaning equipment and performance | |2.6 eccentric requirements...If you want to get a full essay, club it on our website:
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