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Vacuum Cleaning Techniques
Cleaning is the physical or chemical removal of undesired materials from the surface of apparatus. In vacuum technology, cleaning also involves removing those contaminants physically stack on the surface ( e.g. oils , grease and dust) or resulting from a chemical reaction e.g. oxides and sulfides .
Contaminants in vacuum systems are
- water vapor
- greases
- fluxes
- oils
- all other visible dirt’s
These contaminants can be found on:
- The surface of the vacuum system
- In holes and cracks
- Absorbed gases and vapors on the surface of the vacuum systems
- Absorbed gases and vapors in vacuum materials
- Chemically absorbed gases and vapors
The commonly used cleaning solvents include:
- Acetone – used extensively for cleaning and degreasing
- Ethyl alcohol – used as a cleaning and drying agent.
- Methyl alcohol – used for cleaning and drying , it’s very poisonous
- Isopropyl alcohol used for cleaning ,in brazing and soldering techniques
- Chloroethene – a solvent and a detergent for cleaning and degassing diffusion pumps.
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