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Saturday, October 12, 2013

Management

[pic] [pic] part cleaning From Wikipedia, the free encyclopedia Jump to: navigation, search move cleaning is essential to many industrial exhibites, as a prelude to surface close or to protect reasonable components. Electroplating is contributionicularly sensitive to part cleanliness, since molecular layers of oil can resist adhesion of the coating. ASTM B322 is a standard guide for cleaning metals precedent to electroplating. Cleaning processes let in solvent cleaning, hot saltlike detergent cleaning, electrocleaning, and acid etch. The nigh common industrial discharge 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 dilly-dally 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 recitation of thi s 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.
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