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The difference between chemical degreasing and electrolytic degreasing

Vangel 2023-08-03 10:32:36

the difference between chemical degreasing and electrolytic degreasing:

  1. Principle: Chemical degreasing involves using active components in chemical solvents or alkaline solutions to interact with oil molecules, dissolving or emulsifying the grease and removing it from the metal surface. Electrolytic degreasing, on the other hand, uses the electrolytic action of direct current to remove the surface grease through oxidation at the anode and reduction at the cathode.

  2. Operation: Chemical degreasing typically requires immersing the metal workpiece in a chemical solvent or solution and allowing sufficient time for the degreasing process to complete. Electrolytic degreasing, on the other hand, involves using an electrolytic cell with electrodes, immersing the workpiece as the cathode in the electrolyte, and applying a specific current and voltage to remove the grease through electrolytic reactions.

  3. Degreasing effectiveness: The effectiveness of chemical degreasing depends on the composition and concentration of the solvent or solution and can achieve good degreasing results in a relatively short time. Electrolytic degreasing can remove grease more thoroughly, as well as oxide layers and other contaminants from the metal surface.

  4. Application range: Chemical degreasing is applicable to various types of metal surfaces, including steel, aluminum, copper, etc. Electrolytic degreasing is mainly suitable for the surface treatment of precision parts such as electronic and optical components.

It’s important to note that both chemical degreasing and electrolytic degreasing should be selected based on the specific material of the workpiece and process requirements. Furthermore, safety precautions and environmental protection should be taken into consideration during their application.