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Machined Heat Sink

High-precision machining: CNC and EDM processes achieve tight tolerances and intricate geometries not possible with extrusion or casting. Efficiency in precision is key for demanding thermal applications.

Superior surface finish: Machined surfaces offer smooth, high-quality finishes that improve thermal transfer and interface contact performance.

Material flexibility: Compatible with diverse alloys, including high-conductivity aluminum and copper, enabling selection based on thermal and mechanical requirements.

No tooling constraints: Eliminates the need for dedicated molds or dies, reducing upfront tooling costs and enabling rapid prototyping and short production runs.

Supports complex features: Capable of creating deep pockets, undercuts, integrated mounting, threaded holes, and alignment features in a single process.

Ideal for low to mid-volume runs: Best suited for prototyping, specialized devices, or where customized geometries are essential.

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Machined Heat Sink Product

Customization Capabilities

We deliver customized machined heat sink solutions tailored precisely to your functional, thermal, and mechanical design needs.

Material Options: Aluminum alloys (e.g., 6061-T6, 6063-T5), as well as high-conductivity copper variants.
Machining Methods: CNC milling, 5-axis CNC, wire ED M, sinker EDM-each optimized for precision and complexity.
Tolerances: Tight tolerance performance, e.g., ±0.02 mm for hole positions, flatness ≤ ±0.05 mm on contact surfaces.
Surface Finish Options: Flat-milled, fly-cut, sandblasted, anodized (aluminum), nickel-plated (copper), or brushed textures.
Integrated Features: Machined-in mounting bosses, tapped holes, thermal interface pockets, or alignment guides.
Prototype & Small Batch Production: Rapid turnaround without tooling investment-ideal for validation and low-volume runs.
Complex Geometry Support: Enables fabrication of high-fin-density, multi-directional, or 3D channel heat sinks.
Material Versatility: Suitable for both aluminum and copper, enabling fine-tuned thermal performance per application.

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Why Partner with Sinoextrud for Your Machined Heat Sink Needs?

We are more than just an aluminum profile supplier — we’re your efficient, reliable, long-term partner.

With Us, You Get:Faster turnaround，Stable quality，Competitive pricing，End-to-end support.

Large-Scale Manufacturing：Our factory spans 1,000 mu (about 667,000 m²), with full in-house capabilities from aluminum smelting and billet casting to extrusion, surface treatment, and CNC machining.

One-Stop Solution：With 43 extrusion lines (500–5500 tons) and a dedicated mold partner, we provide fast production, custom profiles, and integrated services to simplify your supply chain.

Quality You Can Trust：Strict quality control ensures consistent dimensions, strength, and finish, reducing your risk and increasing reliability.

Fast Delivery & Cost Efficiency：Self-produced billets, in-house processing, and batch production mean faster lead times and lower overall costs.

Advanced Finishing Options：Anodizing and both vertical and horizontal powder coating lines deliver durable, high-quality surface finishes tailored to your product needs.

Factory Overview

Furnace workshop

Aluminum bar production

Mold Warehouse

500-5500 Tons Extruder

Spraying workshop

Anodizing workshop

Deep Processing Workshop

CNC Machining Workshop

Finished goods warehouse

Finished goods warehouse

Finished goods warehouse

Export warehouse

5500 Ton Extrusion Press

Aluminum extrusion press

Large Aluminum Extrusion Line

Aluminum extrusion production line

Extrusion workshop

IATF 16949 Certification

TUV

Finished goods warehouse

Export warehouse

-Standard Packing Option-

* Long bar length profiles 3.0-6.0 meters*

Protective Film

Shrink Sleeve

Brown Paper

Craft Paper

* Short bar length profiles 0.3-3.0 meters*

EPE Foam

Poly Bag

Wooden Crate

Wooden Case

-Loading & Shipment-

Pallet Loading

Bulk Loading

LCL Loading

Expedited Express

STEPS

How to work with us

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Quote & Estimation
Begin with a thorough evaluation of the design's feasibility, followed by a prompt, detailed estimate.
Sample & Test
Creating a prototype to assess dimensions and ensure the mold's precision aligns with the requirements.
Extrude & Finish
Producing the aluminum profile with pinpoint accuracy to the given specifications and applying desired finishes.
Pack & Deliver
Tailored packaging for the extruded profiles, ensuring safe and efficient loading for prompt delivery.

Machined Heat Sink-FAQ's

What materials can you machine?

We machine both aluminum (e.g., 6061-T6, 6063-T5) and copper alloys, selected as per thermal or mechanical requirements.

How precise are your machined features?

We achieve tight tolerances-such as ±0.02 mm for hole locations and flatness within ±0.05 mm-ensuring high thermal performance.

Can complex geometries be produced?

Yes, our machining processes support intricate geometries, undercuts, deep pockets, and multi-directional fins.

Are surface finishes customizable?

Absolutely-options include fly-cut, sandblasted, anodized (for aluminum), nickel plating (for copper), and brushed textures.

Is this suitable for prototyping or small orders?

Yes, without the need for molds or dies, machined heat sinks are ideal for rapid prototyping and small-volume production.

How does this compare to extrusion in terms of cost?

Machining offers flexibility and precision but may be costlier for high-volume runs due to longer machining times.

Can assembly features be integrated directly?

Yes, we can machine mounting bosses, tapped holes, and interface pockets directly into the part.

What surface quality advantages does machining bring?

Machined surfaces minimize thermal interface resistance and ensure better heat conduction through smoother contact areas.

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Sinoextrud: Your Machined Heat Sink Manufacturer

Our machined heat sinks are crafted using advanced CNC milling and EDM technologies that deliver exceptional precision, enabling complex features and exceptional flatness for optimal thermal performance.

The smooth finishes achieved through machining significantly reduce thermal interface resistance-resulting in improved heat transfer efficiency and reliability.

With full support for both aluminum and copper materials and no need for expensive tooling, our solutions are ideal for prototypes or low-to-mid volume production demanding customization and speed.

From threaded mounting features to optimized fin geometries and alignment guides, our machining capabilities allow seamless integration, reducing further assembly steps and improving product reliability.

For applications where thermal performance, precision, and customization are non-negotiable, our machined heat sinks represent a high-performance and versatile solution tailored to your engineering needs.

Machined Heat Sink : The Ultimate FAQ Guide

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