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.

HIGHLIGHTS OF THIS PRECISION CNC MILLING OF AN ALUMINUM EXHAUST SIDE SHIELD PROJECT

CNC Milling Aluminum Capabilities Applied/Processes

Primary:
FIP Form In Place Liquid Dispensing of Gasket
CNC Milling

Secondary:
Coating
Part Marking

Equipment Used to Manufacture Part

Leadwell V40iT 5 axis Vertical Machining Center
Nordson EFD Industrial Dispensing Robot Model # JR 2053N

Overall Part Dimensions

6.360 x 3.750 x .383

Tightest Tolerances

+/- .001 for machining, +/- .003 for liquid dispensing

Material Used

Aluminum 6061-T6

Material Finish

Chemical Conversion Coating ASTM B449-93 class 3

  • Color: Clear
In process testing/inspection performed

Dimensional Inspection, Visual Inspection

Industry for Use

Test and Measure

Volume

250

Delivery/Turnaround Time

30 w/days

Delivery Location

Austin, TX

Standards Met

RoHS, Customer Specifications, 2D CAD Drawing, 3D Model provided in Creo Parametric formerly known as Pro/E,
ASTM B449-93 class 3

Product Name

Primary Side Shield