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Solvent degreasing

Solvent degreasing is a process used to prepare a part for further operations such as electroplating or painting. Typically it uses petroleum, chlorine, or alcohol based solvents to dissolve the machining fluids and other contaminants that might be on the part.

Process
Solvent degreasing is a process in which a cleaning agent is applied directly to the surface by spraying, brushing, or whipping. This process removes oil, grease, dirt, loose particles, and any other contaminates that may exist on the surface of the material.

Characteristics include: cleans almost all electronic assemblies, electrical components, and almost all metals. Parts are usually dried at an elevated temperature, however usually not below room temperature. Almost any size or shape of a part can be cleaned.

Spraying
The most common cold solvent operation, this is usually used in small maintenance degreasers using a petroleum or mineral solvent. Usually to remove the bulk of the material, and prepare it for the cleaning tank. Although if the part does not need to be perfectly clean, then the operation can be ended after spraying. Spraying can also be used as a prequel other degreasing operations such as vapor degreasing which gives a better clean.

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.[2]This is not to be confused with Pickling where the part would be soaked in the bath for an extended period of time. This operations 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. Mainly they consist of the submersion tank. However, some have circulation and filtering systems, and some sort of elevation mechanism.