courtesy of DataPhysics

The effective removal of cooling lubricants is essential for ensuring high surface quality and reliable downstream processing.
Contact angle measurements and free surface energy (SFE) analysis offer a fast, efficient, and non-destructive method for
evaluating the performance of cleaning agents after cooling lubricant application. By characterising surface wettability,
residual contamination and cleaning effectiveness can be quantitatively assessed, enabling informed decisions to optimize
processes and conserve resources.

This application note presents a rapid assessment approach using the PCA 200 portable
contact angle goniometer from DataPhysics Instruments. Precise SFE values are obtained within seconds using a single-click
measurement on a compact, stand-alone device, making it well suited for in-line quality control and incoming goods inspection.
Measurements on two different material surfaces under various processing conditions demonstrate that contact angle
and SFE analysis provide a reliable and efficient tool for comparing cleaning effectiveness and supporting resource-efficient
manufacturing processes.

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