Heat sink with crimped fins for high cooling capacity
Lightweight and powerful electronics cooling in a customised design
Crimped heat sinks are known for their high performance and flexibility in use. Ideally, they are made from a combination of a copper base plate and aluminium cooling fins. The high thermal conductivity of copper ensures rapid heat spreading and heat distribution to the aluminium fins. This favours optimised heat dissipation to the large aluminium surface. The high-strength mechanical connection, which is created by pressing the aluminium cooling fins into the base plate, results in very low thermal resistance. This manufacturing process does not require soldering or gluing.
Advantages of the crimping process in heat sink production
- Solderless connection for simple, distortion-free assembly
- Purely mechanical process ensures a reliable connection with very low thermal resistance
- Copper-aluminium combination perfectly combines high thermal conductivity with weight reduction
- Large number of thin fins increases the surface area
- Flexible design possible without fin interlinking
- Perfect ratio of weight, size and cooling capacity results in effective and economical cooling
- Performance can be increased with heat pipes
- Various surface finishes possible
(chromating, painting, powder coating, etc.)
The use of punched aluminium fins creates a very large surface area for heat radiation. This saves weight and makes the heat sink very light. In addition, the fins can be cut precisely to the application using a customised punched shape, creating a distinctive design for the heat sink. Crimped heat sinks are suitable for various surface finishes such as painting, chromating or powder coating.
Increased performance of crimped coolers through a combination of different techniques
Crimped heat sinks offer an efficient solution to thermal management problems, especially when combined with other cooling technologies. The combination of copper and aluminium allows for high power density, while the ability to use many thin fins maximises the surface area for heat exchange. In combination with forced ventilation or liquid coolers, as well as surface treatments such as powder coating, the cooling performance can be further increased.
Crimped heat sink+ fan
The combination with a fan promotes the rapid removal of heat from the cooling fins and offers the possibility of achieving higher cooling capacities. Forced ventilation is ideal in environments with little or no convection. The fin density can be increased, thus improving heat dissipation. At the same time, a smaller installation space is sufficient for the cooling solution. The reduced size - compared to systems with free convection - therefore allows a more compact design. 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.
Crimped heat sink+ copper plate
A copper plate as a connecting element between the component and crimped fins enables faster heat dissipation. This results in more efficient heat dissipation - especially for high-performance components. The weight saving compared to a full 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.
Crimped heat sink+ heatpipe
The faster heat spread through heat pipes distributes the heat efficiently over the crimped 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.
Crimped heat sink+ vapour chamber
The rapid heat spread of the vapour chamber enables efficient heat transfer over the entire surface of the crimped heat sink, while the lower weight compared to solid copper plates facilitates handling and integration into systems. Even heat distribution ensures ideal cooling performance by avoiding hotspots.
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 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.
Crimped heat sinks in electronic systems for high-performance electronics
The crimped heatsinks are often used in high-performance electronics that rely on efficient heat dissipation without fans in confined spaces. These include, for example, high-end graphics cards, CPUs and LEDs, which generate a large amount of heat and require reliable cooling that is as passive as possible. The ability of a crimped heat sink to distribute heat quickly and over a larger heat sink surface area makes it a favoured choice for such applications.
- 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.
Direct comparison of press-fit manufacturing processes
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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