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EMI Shielding Frames

Conductive frames that minimize electromagnetic interference within critical aircraft electronics. These components maintain tight dimensional accuracy under high vibration, temperature changes, and electrical load.

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Process

CNC Milling, Wire EDM, Laser Machining, 5-Axis Cutting

Materials

Aluminum 6061-T6, Copper, Brass, Stainless Steel 304, Beryllium Copper

Tolerance

±0.005 mm

Finishes

Electroless Nickel Plating, Chromate Conversion, Silver Plating, Passivation

Precision CNC Machining

Advanced EMI Shielding Frames Solution for Reliable Aircraft Systems

These precision-machined frames provide electrical isolation, preventing interference between control circuits, sensors, and avionics modules. Tight tolerances and uniform plating deliver dependable conductivity and mechanical strength. Each frame undergoes conductivity mapping, vibration simulation, and thermal testing to ensure long-term reliability in extreme aerospace conditions.

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Material Selection and Surface Options

All materials are selected for strength, conductivity, and environmental endurance.

Aluminum 6061-T6 Copper Brass Stainless Steel 304 Beryllium Copper
Surface Finishes

Each finish enhances protection, appearance, and functionality.

  • Electroless Nickel Plating: Uniform coating for hardness and corrosion prevention.
  • Chromate Conversion: Maintains electrical contact while resisting oxidation.
  • Passivation: Enhances the durability of stainless steel by removing surface contaminants, thereby improving its corrosion resistance.
  • Silver Plating: Offers superior conductivity and minimizes resistance across connections.
Applications

Aerospace EMI Shielding Frames

Manufacturing high-precision conductive aluminum frames ensuring superior electromagnetic interference protection for critical avionics and flight systems.

  • Avionics PCB Frames

    High thermal conductivity with integrated electrical grounding paths.

  • Radar Waveguide Flanges

    Precision flat surfaces minimizing RF signal leakage gaps.

  • Radio Unit Chassis

    Monolithic design maximizing shielding effectiveness and durability.

  • Conductive PEEK Cages

    Lightweight static dissipation with high chemical resistance.

Capatibilities

Our Machining Capabilities

Advanced multi-axis machining ensures precise geometries and consistent conductivity. All parts meet the requirements of AS9100D, ISO 9001, and NADCAP compliance.

With ±0.005 mm accuracy, digital inspections, and validated coatings, every frame maintains electrical performance and structural integrity, supporting both low-volume prototypes and large-scale aerospace production with verified documentation and repeatable quality.

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Technical Parameters

Specifications / Values

Dimensional Tolerance

±0.03mm (Overall profile), ±0.01mm (Gasket groove width)

Flatness (Critical)

≤ 0.005mm per 100mm (Ensures zero-gap mating with PCB)

Max Part Envelope

400 x 400 x 50mm (Low-profile, multi-cavity structures)

Min Wall Thickness

0.3mm – 0.5mm (High precision thin-wall milling)

Surface Roughness

Ra 0.4µm (Contact surface), Ra 0.8µm (General)

Conductive Finish

SurTec 650 / Alodine 1200 (Low electrical resistance), Electroless Nickel

Corner Radius

R0.2mm – R0.5mm (To maximize internal PCB real estate)

process

Process & Quality

DFM Review: Engineering review analyzing load paths and datums.
CAM & Fixturing: Precision fixture design minimizing machining clamping errors.
In-Process Checks: Active process control via probing and sampling.
FAI & CMM: Comprehensive FAI reports verifying dimensional conformity.
Traceability: Full lot traceability from certified billet to delivery.
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Related Aerospace Components

  • RF Enclosures

    Contain and protect sensitive communication systems.

  • Electronic Chassis

    Maintain alignment and grounding in compact assemblies.

  • Avionics Casings

    Isolate high-frequency equipment from interference.

FAQ

Frequently Asked Questions

These are our common FAQs. If you need specifics: such as machines, quoting, lead time, shipping, quality process, packaging, or payment, please email info@aerocncparts.com.

Our engineers will reply with clear, detailed information.

How effective are EMI frames in blocking interference?
Depending on the frame design and plating type, they can suppress electromagnetic interference by up to 90 dB, thereby protecting critical flight control electronics.
Which material performs best for conductive stability?
Copper and beryllium copper deliver superior shielding efficiency and mechanical durability in high-frequency environments.
Are custom frame geometries possible?
Yes. Complex frame profiles and openings can be precisely machined to match housing configurations or gasketed interfaces, ensuring a seamless fit.
How is coating uniformity ensured?
Advanced plating control systems and post-process inspection verify layer thickness, adhesion, and electrical continuity.
What quality validation steps are included?
Every frame undergoes dimensional inspection, conductivity testing, and CMM verification before release, ensuring compliance with aerospace documentation standards and regulations.
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Full material traceability, 100% inspection, AS9100-ready process

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