“Many users are looking to automate their inspection process, in order to increase their quality level. Systems are available that can integrate a camera and lighting, directly into a selective coating robot, or can be used in a standalone fashion separate machine.”
“There are numerous challenges involved in automating the inspection process, not least of which is the variation in brightness of fluorescence of the conformal coating materials, both batch-to-batch variations and between different conformal coating materials. Silicone materials in particular can have very low levels of fluorescence.”
“Other issues relate to the 3D nature of the substrate, light scattering leading to distortion of the images, background fluorescence of metallic solder joints/component leads and tall components or component bodies restricting the field of view, rendering it nearly impossible to inspect beneath or around through hole capacitors and connectors.”
Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating inspection.
Phil Kinner is the European Sales Manager for Precision Valve and Automation (PVA,) the world’s leading conformal coating dispensing solution provider. Prior to joining PVA, Mr. Kinner worked for the leading conformal coating manufacturer HumiSeal for 12 years, starting as a Development Chemist and lastly serving as the Business Director North America and Asia. Mr Kinner is therefore well qualified to speak on matters relating to both chemistry and the associated dispensing processes, and has a great familiarity with the global conformal coating business.
Each Month as part of the Nexus Newsletter a panel of experts are asked their opinions on a challenging area in conformal coating. Their responses are published to help others solve their issues.
The Experts for Conformal Coating come from a range of backgrounds and areas allowing a wide scope for knowledge transfer.
Click here to View the Nexus Associate Conformal Coating Experts.
Please note that all of the Associate conformal coating technical experts express their own opinions free of charge and have no financial affiliation to Nexus. Any opinions expressed by the experts is not the viewpoint of Nexus3c Ltd.