Skived heatsink

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Skived Heatsink

Skived heatsink use a single block of material such as copper or aluminum and cut out fins with high density, High fins, extra-long heat sink structure by the dedicated skivied machine using high skiving precision cutting technology, skived heatsink breaks through the limitation of the thickness and length ratio of conventional heat sinks and can produce high density heat sink.The fins and the base is “one piece”. So skived heat sink efficiency is two times than traditional heat sink due to the skived heat sink without any connection, and high purity materials. Thermal conductivity efficiency can reach 100% of the profile material. Lori skived heat sink widely used in photovoltaic industry, electric vehicles, inverters, communication products, led light in green house and so on.

Skived heatsink manufacturing process

The  manufacturing of skived heatsink needs mature skived fin production technology, advanced large skived fin machine tools and technical cooperation from engineers. The specific production process is as follows:

1. Customize the suitable profile according to the skived heat sink design size, and then put the profile on the skived fin machine in the correct operation mode.

2. Set the parameters of the skived fin machine, and input the data of the skived fin needed to be produced, such as the data of fin spacing, fin height and fin thickness.

3. Start the skived fin machine, and the engineer monitor the machine, check the semi-finished products to see whether they meet the data requirements, and make abnormal adjustment.

4. Cut semi-finished skived fin heat sink into the specified design size.

5. Processed the cut semi-finished skived heat sink, deburring, tapping, etc.

6. If there is buried heat pipe design in the design drawing, grooving, pressure the heat pipe, epoxy resin welding and other processing processes should be carried out on the back of the skived heatsink.

7. Finish the whole production process by packing the finished skived heatsink.  

Skived Heat Sink Benefits/Features

1. Skived heatsink can be an alternative to extruded heat sinks when looking for a fin density which can’t be achieved by extrusion technology.

2. Skived heatsink fabrication does not need expensive tooling which provides greater design flexibility. Instead, each fin is cut separately using the same tool which allows for lower tooling costs.

3. Skiving heat sink can be made of copper and aluminum, enables solid copper solutions.The skiving process is a good thermal solution for high power cooling.

4. Skived heat sink leading the heat innovation innovation high density ,high thermal performance, high aspect ratio, excellent performance. 

5. Skived heat sink without interface joint between the fins and base, improved thermal performance than traditional heat sink.

Skived Heat Sink Types

1. Copper Skived heatsink: Copper thermal conductivity is good, plus the skived fin technology can achieve the maximum heat dissipation area per unit volume, greatly improve the overall heat dissipation performance. So lori copper skived fin heat sink is used in high end chip, cpu heat dissipation, server and other fields

2. Aluminum skived fin heat sink: Generally made of pure aluminum, thermal conductivity is higher than aluminum alloy, and with skiving technology, heat dissipation performance is more stable than aluminum extrusion heat sink. Lori aluminum skived heat sink widely used in photovoltaic industry, electric vehicles, inverters, led lights ,communication products and so on.

Skived Heatsink Manufacturing Capability

The following dimensions are the capabilities for skived heat sinks with high quality and low cost.

Materials: Copper (C11000) or Aluminum (6063)

Dimensions as below:

Maximum fin width: 500 mm (20″)

Max fin height: 100 mm (4”)

Recommended fin height: <50 mm (2”)

Minimum fin thickness: 0.15 mm (0.006”)

Minimum fin gap: 0.25 mm (0.01”)

Skived fin thickness: 0.1mm~2mm

Recommended fin thickness: 0.3-0.6 mm (0.012-0.024”)

Base thickness:1-30 mm.

Max Flow length: 3000mm.

Tolerance of + / - 0.2 mm.

Skived Heat Sink Application

Skived heat sink will be more widely used, skived fin process can also cooperate with other cooling process in production, such as the heat pipe technology, also can match the water cooled heat sink process, micro channel and so on, according to the characteristics of different motor production produce heat sink in different shapes and sizes, with a variety of process can improve the heat sink performance, at the same time reduce the cost. Skived fin for the profile material requirements are not high, can be aluminum profile can be copper profile.

Skived copper heat sink is a cost effective solution when considering the low tooling cost and the optimized fin surface area. Skived heat sink are widely use in the following applications:

1. Computer and electronic component

2. Telecommunication equipment

3. Industrial equipment and component

4. LED Lighting and household appliances industry

5. Automotive components

6. 5g base station and server 

Skived Heatsink Design Guidelines

1. Skived heat sink Airflow lengths limited by cutter, maximum heat dissipation under forced convection (with high airflow)

2.Skived fin can be designed very thin fins and very high with high density

3. Skived fin heat sink material can be Aluminum and Copper.

4. Alumimum skived heat sink with high aspect ratios( up to 50)

5.Skived heat sink without  filler material

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