Conformal coating removal system

14 April 2010 Manufacturing / Production Technology, Hardware & Services

HumiSeal recently débuted RemUVa, a machine designed to remove robust coatings from finished assemblies. It has a fully configurable nozzle to allow working on smaller intricate areas or removal of coating across a larger area with full control over air pressure and micro-abrasion material flow. The system’s flexibility and unique micro-abrasion material mean that it does not damage adjacent devices, interconnects or printed circuit boards (PCBs).

The RemUVa is a bench-top powder abrasion system designed to selectively remove conformal coatings including UV40 from various components on PCBs without causing any mechanical or ESD damage. The system uses a unique abrasive media known as carbo-blast, which is purported to be less aggressive than other alternatives. In situations where conformal coated components are sensitive to ESD, the machine utilises a point ioniser to effectively reduce the ESD from reaching levels that could potentially damage components. This process is achieved by introducing a flow of positive and negative ions into the abrasive path at the exit point of the nozzle tip. To aid the operator, the chamber is also lit with black light, making it easier to see the UV fluorescing coating that is to be removed.

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