Hermetically sealed solvent degreasing technologies for exceptional performance under vacuum
SOLVENT DEGREASER TYPICAL WASHING CYCLE
Firbimatic Metal Cleaning Division solvent systems perform the complete washing and drying cycle inside an hermetically sealed process chamber into which one or more component baskets have been introduced. Based on the type of solvent degreaser or the process selected all, or just some of the cleaning phases listed below, are performed under vacuum:
When the cycle is initiated the process chamber is placed under vacuum and a brief pre-wash is performed with solvent sprayed at high pressure directly onto the parts. This solvent charge is sourced from the main holding tank (T1). Upon completion of the pre-wash the solvent, which now contains 90% of the contaminants in solution, is then directed to the system’s integral distillation unit which purifies the liquid by fractional distillation.
Main CleaningFor components with complex geometric features or for high volume “bulk” items a main wash with full immersion is essential. A solvent degreaser is again introduced into the process chamber from the main holding tank (T1). Basket manipulation (oscillation or rotation) plus the addition of further mechanical agitation by spray under immersion and/or ultrasonic energy remains an option at this point. During this phase the solvent can also be mechanically filtered before it is returned to T1. In a continuous process solvent from T1 is directed to the distillation unit where it is gradually distilled and the purified solvent returned to a second tank (T2) in readiness for a final liquid clean of 100% pure solvent.
Where circumstances demand pure solvent from T2 can be introduced into the process chamber by spray action.