What must be done to the surface after using chemical cleaners on greasy parts?

The process of cleaning greasy parts prior to liquid penetrant testing is crucial for accurate results. After using chemical cleaners, it is essential to thoroughly rinse the surface free of any residue. This step ensures that no cleaning agents, oils, or contaminants remain that could interfere with the penetrant's ability to be absorbed into cracks or porosity in the material being tested. Residual cleaners can create a barrier that prevents proper inspection, leading to false interpretations of the surface condition.

Rinsing also removes any remaining chemical agents that might react with the penetrant or developer, ensuring the integrity of the testing process. By achieving a clean surface, it maximizes the effectiveness of the penetrant and the reliability of the inspection results.