Precision For in Place Gasket Aluminum Exhaust Side Shield
H&S Manufacturing was contacted by a manufacturer of test and measurement equipment for fabrication of an aluminum exhaust side shield. This complex project required a CNC milled component that was fitted with a gasket to shield electronics from electromagnetic interference.
The client provided us with 2D CAD drawings, which we derived a 3D model from using Creo Parametric engineering software. The shield was made from 6061-T6 aluminum and milled to 6.360″ x 3.750″ x .383″ utilizing our Leadwell V40iT 5-axis vertical machining center. A clear chromate coating was applied to the aluminum per ASTM B449-93 standards; the class 3 coating retards corrosion, acts as a base for the gasketing material, and has low electrical contact impedance.
To produce the extensive layout of the gasket, liquid gasket material was dispensed using a Nordson EFD industrial dispensing robot model # JR 2053N. This form in place process applied a bead of SNN60RXP Laird gasket material to the aluminum substrate forming a precise gasket.
Our quality program utilized in-process dimensional and visual inspections. Fulfilling all customer requirements, we held milling tolerances to ±.001″ and gasket tolerances to ± .003″ on bead width and ±.005″ on location.
To learn more about this CNC milling and gasket forming project, please see the table below or contact us today.