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Custom Precision Machining for Heat Sink Plates

DEK provides heat sink plates with a flatness of ±0.01 mm, using CNC milling and anodizing. We specialize in the prototyping and production of aluminum heat sinks, and our 5-axis machining technology ensures stable thermal performance and precise assembly fit.
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Heat Sink Plates
Introduction

Precision Machining of Custom Heat Sink Plates

Precision Machining of Custom Heat Sink Plates

Heat sink plates require tight flatness, accurate slot positioning, and consistent surface finish to ensure efficient thermal transfer. Deep milling of thin walls and maintaining parallelism are common machining challenges.

At DEK, we use multi-axis CNC milling, vacuum clamping, and optimized tool paths to achieve tight flatness control and accurate dimensional stability. Anodizing and nickel plating are applied for enhanced heat dissipation and corrosion resistance.

Every part is inspected with CMM and surface roughness testers to ensure full compliance with the drawings, even on high-volume runs. Our machining engineers balance cost, tolerance, and thermal performance in each project.

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±0.01mm Flatness

Ensures stable heat transfer

±0.02mm Slot Accuracy

Reliable component assembly

Ra 0.8µm Finish

Improved contact performance

Anodizing Option

Type II and Type III (Hardcoat) available.
capabilities

Machining Capabilities

5-Axis Milling for Flatness Control

We use 5-axis CNC to handle thin plates without deformation, combining vacuum fixtures and controlled tool pressure. Flatness up to ±0.01mm is achieved.

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Surface Treatment Integration

We provide anodizing, nickel plating, and chromate conversion. Each coating is tested for thickness and conductivity with spectrometers.

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Thermal Performance Optimization

Machining strategies minimize residual stress, while post-process grinding ensures maximum contact area for efficient heat transfer.

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Complete Dimensional Verification

All heat sink plates undergo CMM inspection, flatness measurement, and roughness testing. Each batch comes with dimensional reports.
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DFM Support from Start

Our engineers provide DFM feedback before production to ensure manufacturability of slot depths, hole tolerances, and thermal interfaces.
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Stable Delivery Process

We manage production flow from pilot runs to mass production, with SPC monitoring and contingency planning for urgent orders.
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Export-Grade Packaging

Plates are packed with foam, anti-static film, and fumigation-free wooden crates for heavy shipments. Edge protection prevents scratches.
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TESTIMONIALS

Testimonials

What Makes Us Different

Precision, fast turnaround, and zero defects - mechanical engineers rely on DEK when failure is not an option.

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6-12h

6-12h Quote

You receive a manual quotation within 6–12 hours, considering tolerance and surface finish, not automated estimates.
1 PC

1 PC MOQ

We support one-piece prototype orders, letting you validate design before mass production.
30+

30+ Alloys

You can choose from aluminum, copper, or custom alloys with guaranteed material certification.
FAQ

Heat Sink Plate Buying FAQs

Please provide a 3D CAD file (STEP, STP, IGS,) and a 2D PDF drawing specifying materials, tolerances, surface finish, and quantity. You can upload them securely on our quote page.
Depending on complexity, material availability, and finishing requirements, prototypes typically ship within 7 to 14 business days. Let us know if you have an urgent deadline.
Yes, we have extensive experience machining high-conductivity copper alloys like C110 and C101. We use specific tooling and processes to manage copper's unique machining properties.
We use precision fly cutting or grinding as a final step. Flatness is then verified using a CMM with a touch probe to ensure it meets the tolerance specified on your drawing.
Yes, we treat all client drawings and data with the strictest confidence. We are happy to sign a Non-Disclosure Agreement (NDA) before you share your project details.
Each heat sink is placed in custom-cut foam or a compartmentalized tray to prevent movement. For large or heavy orders, we build fumigation-free wooden crates for maximum protection during transit.

Put Your Heat Sink Plates into Production Today

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