Extruded aluminium heat sinks by the extrusion process
Extruded heat sinks as a classic cooling solution and basis for high-performance combinations
With extruded aluminium heat sinks, large surfaces can be created cost-effectively in order to quickly dissipate power loss away from the electronic component. The cooling fins passively dissipate the energy to the surrounding air through heat radiation and convection. Ideally, they are arranged vertically to support natural air circulation through the chimney effect and have a black coating. This is because dark-coloured objects not only absorb more heat, they also radiate it better through long-wave infrared heat radiation.
Advantages of extruded heat sinks
- Low mould costs and inexpensive material
- Can be easily combined with other production technologies
- Proven standard process for heat sink production
- Ideal for medium and large series of an individually optimised cooling profile
- Various surface finishes possible (anodising, nickel plating, painting, powder coating)
Heat sink aluminium for the continuous casting process consists of special alloys in order to be pressed out of the forming die in a smooth and dimensionally stable manner. The variety of possible cross-sections is enormous and ranges from simple comb fins to very finely modelled fin structures and hollow chamber profiles.
Increased performance of profiled heat sinks through a combination of different techniques
The aluminium profiles produced using the extrusion process are an excellent basis for combining with other cooling technologies due to their material properties and the ability to create complex shapes. Profile heat sinks offer good value for money and can be customised to specific requirements thanks to their easy machinability.
Extruded heat sinks+ fan
Where natural convection is not sufficient for cooling electronic components, forced ventilation ensures rapid heat dissipation and draws in cold air from outside the enclosure. In combination with a higher fin density, significantly higher cooling capacities are possible. Compared to cooling by free convection alone, this combination with a fan requires less installation space and the cooling solution can be significantly smaller. 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.
Profile heat sink+ copper insert
Using a copper plate as a connecting element between the component and the extruded heat sink enables faster heat dissipation. This enables more efficient heat dissipation - especially for high-performance components. The weight saving compared to a solid copper cooler results in a lighter overall design. The copper plate buffers the component's power peaks, which ensures more stable performance even under high loads.
Profile heat sink+ heatpipes
The faster heat spread through heat pipes distributes the heat efficiently over the profile heat sink, which enables even heat distribution. This avoids hotspots and the heat can be transported to more distant locations, which is particularly relevant in compact systems. In addition, this combination of manufacturing processes enables weight savings without compromising cooling performance.
Profile heat sink+ vapour chamber
Exceptionally fast heat distribution is made possible by combining a profiled heat sink with a vapour chamber. This technology is more effective and lighter than conventional solid copper solutions and also offers the flexibility to be mounted in any installation position. In addition, the even heat distribution prevents hotspots and ensures a low temperature gradient. This makes them an ideal solution for demanding thermal applications where space and weight savings are crucial.
Let's talk about your cooling task!
Raphael Kroll
Sales Department
+49 (0)7561 9837-27
r.kroll@ekl-ag.de
Make an appointment Enquiries by e-mail
Raphael Kroll
Sales Department
+49 (0)7561 9837-27
r.kroll@ekl-ag.de
Make an appointment Enquiries by e-mail
Added value and extras
Our full service goes beyond the mere development, series production and logistics of your heat sinks. Do you need special holes 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 prototype construction, 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 optimum 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.
Aluminium cooling fins in typical application areas
Aluminium heat sinks are popular in many applications due to their high thermal conductivity and efficiency in heat dissipation. The extrusion process makes it possible to produce heat sinks in many different sizes and shapes. Aluminium itself is one of the metals with the highest thermal conductivity after silver, copper and gold, which makes it the material with the best price-performance ratio for heat sinks. In addition, extruded aluminium heat sinks offer an excellent balance between cost, performance, volume and weight.
- 29 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 entry point!
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.
Extruded heat sinks from the aluminium extrusion process in direct comparison
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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