Skived fin heat sink with close-cut fins
Peeled, scraped or skived: In any case, ultra-fine cooling fins from one piece
The special feature of the skived fin manufacturing process is that the cooling fins are "scraped" out of a single copper or aluminium metal block. This enables high precision and a very tight fin structure. This technique - also known as the skiving process - produces scraped radiators with narrow fin spacing, which is not possible with classic extruded heat sinks.
Advantages of the skived fin process in heat sink production
- Low tooling costs and therefore also suitable for small batches
- Very high thermal cooling capacity thanks to the high density of the cooling fins
- Lightweight, compact and yet powerful - ideal for space-limited applications.
- Very small heat sinks with fine fins and small fin spacing of < 0.3 mm possible
- Very large heat sinks with fin widths of up to 900 mm and fin heights of over 120 mm possible
- Perfect mechanical and thermal connection of base plate and cooling fins as they are cut directly from the material
- Cost-effective and environmentally friendly
In contrast to bonded or soldered versions, cut finned heat sinks from skived fin production offer minimised thermal resistance. There is no obstruction of the heat transfer from the base plate to the individual fins by foreign material. Skived finned heat sinks are manufactured from pure copper or a thermally highly conductive aluminium alloy.
Increased performance of skived fin heat sinks through a combination of different techniques
The skiving process turns a metal block into heat sinks with very fine and dense fins that have a high specific power density. In combination with other cooling technologies, the cooling performance can be significantly increased, making them ideal for high-performance electronics.
Skived Fin heat sink+ fan
The combination of skived fin heat sinks with fans creates a fast dissipation of the power loss, which enables higher cooling capacities. This technology is particularly advantageous in environments with little or no convection as it does not rely solely on natural airflow. Forced ventilation allows increased fin density for a larger surface area, which further increases heat exchange and therefore cooling efficiency. EKL offers a wide range of its own fan models as well as fans from well-known brands such as ebm-papst, SANYO DENKI, ADDA, JAMICON, STK and Everflow.
Skived Fin heat sink+ heat pipe
The rapid heat spread means that heat loss is quickly channelled away from the source. Heatpipes are particularly effective at transporting heat over longer distances, which enables the temperature to be distributed evenly across the entire heat sink. This contributes significantly to the avoidance of hotspots.
Skived Fin heat sink+ vapour chamber
The combination of the rapid heat spread of the Vapor Chamber with the fine, precise fins of the Skived Fin heat sinks creates an even heat distribution. The Vapor Chamber is lighter than the alternative, solid copper plate, which is particularly advantageous in mobile applications. This technology also effectively prevents the formation of hotspots.
Let's talk about your cooling task!
Thomas Würzer
Sales Department
+49 (0)7561 9837-44
t.wuerzer@ekl-ag.de
Make an appointment Enquiries by e-mail
Thomas Würzer
Sales Department
+49 (0)7561 9837-44
t.wuerzer@ekl-ag.de
Make an appointment Enquiries by e-mail
Peak performance with active cooling through fan support
The contact surfaces to the electronic component (e.g. semiconductor mounting surface) are milled precisely flat. Skived fin heat sinks are ideal for cooling thermoelectric modules and similar power modules. The low tooling costs for skived fins enable rapid prototype development and low-cost small series production. The dense arrangement of the cooling fins results in an extremely high surface area in a small space. If the chimney draught in the narrow spaces between the fins is not sufficient for natural air circulation, heat dissipation in the skived fin heat sink is actively supported by a fan.
Added value and extras
Our full service goes beyond the mere development, series production and logistics of your heat sinks. Do you need special bores or milling on your heat sinks? Do you want your heat sink to not only dissipate a lot of heat, but also look stylish? Would you like a product ready-to-plug-in with all accessories?
Welcome to EKL!
Welcome to EKL!
CNC machining
For prototypes, small series and customised reworking of heat sinks, we have modern 3- and 5-axis CNC milling machinesat our company headquarters. Complex machined and high-precision radiators are our speciality. Working areas of the machines:
Hermle C 400 (5-axis) 850 x 700 x 500 mm | Mikron VCE1000pro (3-axis) 1000 x 560 x 600 mm | Kondia B1050 (3-axis): 1000 x 500 x 600 mm
Hermle C 400 (5-axis) 850 x 700 x 500 mm | Mikron VCE1000pro (3-axis) 1000 x 560 x 600 mm | Kondia B1050 (3-axis): 1000 x 500 x 600 mm
Surface finishing
Our range includes various surface finishes to create a durable, corrosion-resistant surface. Nickel plating increases wear resistance and lustre. Chromating and passivation, especially with Surtec 650, provide additional protection against corrosion. Powder coating is another option for a robust and durable coloured surface. Painting and cathodic dip coating round off our wide range of surface colours and textures.
Attachments & accessories
Depending on the application, screws, springs or push pins ensure the secure and stable attachment of the heat sinks. Backplates provide additional stability and improved heat dissipation. Heat-conducting pastes and pads are naturally part of our range to enable optimum heat transfer between the heat sink and the heat source.
Secure packaging for transport
With a focus on perfect protection during transport, we develop packaging that not only fits perfectly but is also robust. Another important aspect of the range is the use of recyclable materials that contribute to sustainability and environmental friendliness.
Skived Fin high-performance heat sinks for PV, IT and TC
This technology is particularly advantageous for high-performance electronics where a compact design and high heat dissipation are required. In addition, this process does not incur any tooling costs, which also makes it attractive for small series and individual pieces. Applications can be found in computers and electronic components, telecommunications equipment, industrial devices and components, high-power LED lamps and inverters for photovoltaic systems.
- 30 years of experience
- Engineering in Germany
- Full Service Heat Sink
- Cost-efficient development
- Fast market launch
- Maximum quality
The EKL project stages for your cooling solutionChoose your point of entry!
Our offer is as flexible as your needs. Are you still early in the development phase and want an idea generator for the best cooling solution? Do you have a ready-made device that gets too hot? Or are you simply looking for an alternative or additional supplier for a heat sink already used in series production? In EKL you will always find a flexible, agile and responsible partner for the cooling of your electronic components and complete systems, whatever the project phase. We look forward to your enquiry!
Counselling
Concept
Concept
In personal contact and open dialogue with you, our engineers create the creative space and framework to design the best cooling solution for your requirements from the wealth of options available.
Development
Feasibility / simulation
Feasibility / simulation
We test the idea for your heat sink virtually in the thermal simulation. Realistic computer simulations allow variations in manufacturing processes, system structures and other parameters.
Performance optimisation
Even a well-functioning heat sink can still be optimised. We determine the "how" and "how much" by simulating different materials or cooling technologies, for example, as well as simulating various environmental parameters.
Cost optimisation
An expensive heat sink can often be made significantly cheaper by using an alternative manufacturing process. Whether with the same or application-specific performance: we support your product development in reducing costs.
Production drawing
Prototype construction
Prototype construction
Prototypes from our design department enable early testing and targeted solutions to problems in your device. We create your functional and design prototypes with our in-house CNC production.
Series production
small to large
small to large
By manufacturing in-house and in Asia, we can offer all types of heat sinks from small to large series at competitive unit prices. We impress our long-standing customers with our consistently high quality.
Sampling
Incoming goods inspection
Incoming goods inspection
We make no compromises when it comes to quality: Development takes place in Germany and all series products are analysed by our German test laboratory according to test plans using state-of-the-art methods.
Surface finishing
Anodising, powder coating, painting etc. protect your heat sinks from corrosion and environmental influences. But colour is not just chic, because dark-coloured heat sinks also emit more radiant heat.
Assemblies
Pre-assembly
Pre-assembly
We actively relieve your production with pre-assembled assemblies. This reduces your workload per device and guarantees the highest quality, because as cooling professionals we ensure that the heat sink is optimally attached.
Quality assurance
Test plans
Test plans
We test according to our own and customer-specific test plans using the latest rapid thermal measuring equipment, 3D measuring machines, assembly tests and testing of various application scenarios.
Packaging design
Packaging production
Packaging production
EKL develops and produces customised packaging to optimally protect your sensitive heat sinks or assemblies in the sometimes harsh transport and storage environments.
Warehouse
& Logistics
& Logistics
With large storage capacities, we offer production-related stocking and consignment warehouses, just-in-time deliveries, customised delivery schedules and flexible shipping options for your individual requirements.
Skived Fin manufacturing process in direct comparison
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| Extruded heat sinks | Cold forged heat sinks | Soldered heat sinks | Bonded cooling fins | Pressed cooling fins | Friction stir welding | Heatpipes | Vapour Chamber | Crimped heat sinks | Skived Fins | Die casting | Laserwelding | Vacuum brazing | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thermal conductivity | |||||||||||||
| Heat dissipation over long distances | |||||||||||||
| Design freedom and flexibility in shape and size | |||||||||||||
| Low tool costs / initial investment | |||||||||||||
| Favourable unit prices | |||||||||||||
| Low set-up costs | |||||||||||||
| Economic efficiency for small series | |||||||||||||
| Economic efficiency for large series | |||||||||||||
| Can be combined with other technologies | |||||||||||||
| Surface finishing / resistance | |||||||||||||
| Heat transfer | |||||||||||||
| Standard products | |||||||||||||
| Material density | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | |||||||
| Space-saving, large surface area in a small space | |||||||||||||
| Weight-saving | |||||||||||||
| Position dependence / gravity dependence | |||||||||||||
| Machinability | |||||||||||||
| Mechanical stability | |||||||||||||
| Low wear and tear | |||||||||||||
| Homogeneity (material, no additional materials) | |||||||||||||
| Suitability for large coolers | |||||||||||||
| Suitability for small coolers |
• less suitable | ••••• excellently suited | n.a.: not applicable
Let's talk about your cooling task!
Frank Sichler
Sales Manager
+49 (0)7561 9837-47
f.sichler@ekl-ag.de
Make an appointment Enquiries by e-mail
Frank Sichler
Sales Manager
+49 (0)7561 9837-47
f.sichler@ekl-ag.de
Make an appointment Enquiries by e-mail