Immersion
The part is immersed in a tank of solvent and usually agitated like a washing machine for clothes to get all of the contaminant off. It is then hung on a rack over the tank to allow drying. This is not to be confused with pickling, during which the part would be soaked in the bath for an extended period of time. This operation covers a relatively short period and doesn't clean as deeply as pickling.
Soaking is typically the most common application of this process. The material is left to soak until all the dirt or contaminates are removed from the surface. However, the work piece may also be sprayed or have solvent directly whipped on it. These two applications are typically used for spot cleaning
Due to the ability of the solvent to reach in all places, virtually all parts of any shape or size can be cleaned using solvent degreasing. The only restriction lies in the size of equipment available. Solvent degreasing equipment is available in a wide variety of sizes and shapes and mainly consists of a submersion tank. However, some degreasing equipment has a circulation and filtering system or some sort of elevation mechanism.
Read more about this topic: Solvent Degreasing, Process