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TECH BRIEF Closing the Gap in Critical Cleaning Challenges Solvents may be the answer to a shop's need for efficient, reliable and sustainable cleaning of precision machined parts. By Doris Schulz M any applications require a precision cleaning process to ensure that machined metal parts fulfll high cleanliness demands. When metal chips and non-polar residues such as oils, greases and cooling lubricants must be removed, a solvent is often the best choice. If used in a vacuum sealed cleaning machine, the solvent ofers reliable and cost-efective cleaning that also satisfes regulatory guidelines. Machined metallic parts inevitably get dirty during the manufacturing process, and in many industries, requirements for parts cleanliness are becoming tighter. Choosing the appropriate cleaning process can be challenging. Te cleaning agent's capacity to dissolve contaminants afects quality, costs and the stability of the cleaning process. 38 PRODUCTION MACHINING :: FEBRUARY 2013 :: The Safecare system consists of two specially designed, double-walled containers for fresh and used solvent and ensures, in combination with closed cleaning machines, a practically emission-free operation. Image source: Safechem :: Closed solvent cleaning machines can be adapted to specific requirements regarding cleanliness, throughput, part geometry and (if necessary) preservation.