Wellste: Your Leading Skived Fin Heat Sink Manufacturer

Wellste can produce a skived heat sink that offers excellent thermal properties. With a dense population of uniformly shaped and distributed fins, these serve as a great solution.

Wellste will provide you high-quality thermal products that are applicable for industrial equipment and components like microelectronic.

Whether you are going to order skived fin heat sink for your business or personal projects, Wellste will handle your order, help you provide the best cooling solutions for your components.

Wellste manufactured skived fin heat sink using aluminium. Thus it comes with a thin finned heat sink.

These skived processes will serve as a perfect thermal solution. This skived fin heat sink can be used for cooling high-power electronic devices under air-cooled conditions.

Our skived fin heat sinks offer a highly optimized cooling solution as they allow for higher fin densities and higher aspect ratios in greater surface area.

If you are looking for a fin density, our skived fin heat sinks can be the best alternative used for extruded heat sinks.

At Wellste, skived fin heat sinks are being produced according to the required specifications of the product.

The final skived heat sinks are being machined using fabrication techniques such as CNC, Punching, Trapping, Welding, drilling, and so on.

Our in-house tooling manufacturing system solutions continually innovate that will guarantee you high precision products.

Our technical staffs are 24/7 available for support and fast response. Moreover, they help sort through the selections to find the most cost-efficient and cooling solutions for your important devices and other equipment.

Wellste serves more than 1000+ clients from different countries. We are well-known for designing and engineering excellent aluminum heat sinks and cooling solutions.

Skived Fin Heat Sink: The Ultimate FAQ Guide

I know you would like to learn more about skived fin heat sink.

A reason this guide covers everything you need to know about skived fin heat sink such as features, working principle, components, surface finish, attachment methods, etc.

What Is A Skived Fin Heat Sink?

These are heat sinks that will provide high and optimized cooling capabilities since they allow for a high fin density.

This is in contrast to extrusion techniques that do not offer a high fin density.

Besides, skived fin heat sinks lack interface joints that will restrict the flow of heat like that found in brazed or bonded fin heat sinks.

skived fin heat sink

Skived fin heat sinks are made using a single piece of metal material which gives a lower thermal resistance.

The low thermal resistance is made possible since the skived fin heat sink has no joint connecting the fins and the base.

When making skived fin heat sinks, you will slice the top part of the base which is known as skiving.

Afterward, you will fold it backward until it attains a perpendicular shape to the base.

Then, you will repeat the process at regular intervals for you to form the fins of the skived fin heat sink.

What Are The Benefits Of A Skived Fin Heat Sink?

Here are some of the advantages of skived fin heat sinks:

Suitable Conductivity

Skived fin heat sinks are made from a single metal profile meaning there is no connection between the fins and the base.

This feature will enhance the heat dissipation trait of the skived fin heat sinks and thermal conductivity can reach 100%.

High Fin Density

It is possible to make a skived fin heat sink with several fins which are thin and densely packed.

This will allow for a high heat dissipation efficiency.

Suitable Airflow

Skived fin heat sinks will allow for a great forced solution to the flow of air.

The skived fin heat sink processing method is simple than the alternative liquid-cooled heat sinks in the market.

Besides, skived fin heat sinks are also lightweight and cost less.

Size

Skived fin heat sinks are rarely limited to size and this means you can make them have a wider profile.

This proves true when you compare it to aluminum extrusion and other heat sink manufacturing processes.

Besides, this feature of skived fin heat sinks makes it possible to make larger versions that you can use to dissipate heat within machines of high power.

Customization

When customizing skived fin heat sinks, you will rarely require costly tooling and this will offer great flexibility in the design process.

Besides, you will separately cut the fins of the skived fin heat sinks using a similar tool thus decreasing the tooling costs.

Addition of Thermal Interface

Here, you can include a thermal interface material to the skived fin heat sinks.

This will allow you to suitably connect it to the heat source making a fully complete thermal solution.

What Are The Limitations Of A Skived Fin Heat Sink?

The limitations of a skived fin heat sink should not deter you from using one in your system.

Some of these limitations entail the following:

• During the skiving process, you will require large forces to cut the single metal block into slices then bend them.
• The outline of a skived fin heat sink compared to other variations of heat sinks is not as appealing.
• If the skived fin heat sinks it too thin, it can deform easily since its hardness is insufficient.
• Besides, the material construction of the skived fin heat sink will determine its thermal conductivity.

How Does Skiving Heat Sink Process Entail?

The process of manufacturing a skived fin heat sink entails the use of a skiving machine.

This machine has a blade that will cut the material construction of the skived fin heat sink into thin slices within a suitable length.

Afterward, the skiving machine will push the skived fins upwards.

Besides, you can use the skiving machine to make very thin fins for certain heatsink applications, as thin as 0.008 inches.

During the skiving process, there will be the formation of sharp corners and burrs at the extreme part of the fins.

This means you will pass the skived fin heat sink through a grinding machine to eliminate the sharp corners and burrs.

The grinding machine has a gear-generated grinder that will eliminate the defects of sharp corners and burrs.

This process will also smoothen the surface of the skived fin heat sinks and ensure the correct height of the final heat sink product.

What Are Some Design Specifications For A Skived Fin Heat Sink?

Skived fin heat sinks have the following design specifications:

Aluminum

Several manufacturers will use aluminum material when creating a skived fin heat sink.

One of the aluminum alloys that you will find in skived fin heat sinks is aluminum alloy 1050A.

This alloy contains one of the highest thermal conductivity values of 229 W/m•K, however, it is soft mechanically.

Besides, you can also use aluminum alloys such as 6060 alloys with thermal conductivity of 166 W/m•K.

Another aluminum alloy is 6063 which has a thermal conductivity value of 201 W/m•K.

The values of these aluminum alloys will depend on their temper.

Most skived fin heat sinks are made using aluminum alloy 6063 since it offers suitable machinability and its strength is relatively high.

Besides, you can make skived fin heat sinks with a fin thickness value between 0.25 mm and 0.8 mm.

This allows you to make extremely thin and lightweight fins.

Besides, the manufacturing method can make skived fin heat sinks with a height of up to 150 mm.

Copper

This is another suitable material for making skived fin heat sinks.

Copper has a high conductivity of heat and the cooling efficiency is also high.

Besides, the thermal conductivity of copper material is almost twice that of aluminum material.

However, copper is up to three times dense as aluminum material up to six times the cost of aluminum, depending on the market.

What Surface Finish Can You Use On A Skived Fin Heat Sink?

There are several surface finishes you can apply on a skived fin heat sink.

Besides, there are two variants to a surface finish to skived fin heat sinks fabrication processes.

These include finish texture and the protectant or exterior coating to the surface.

Some of the surface finishes include the following:

• Brushed texture

The surface of the skived fin heat sink will receive a unidirectional satin finish through metal polishing.

Besides, a brushed texture allows you to easily see the patterns of the parallel lines.

• Bead blast texture

This kind of surface finish leaves a uniform texture to the skived fin heat sink.

Besides, it has a low gloss making it less reflective.

• Polished texture

This surface finish will give the skived fin heat sinks a bright shine due to the polishing effect.

• Machined finish texture

The machine that operates on the skived fin heat sink will determine the texture that will appear.

• Sandblast texture

This surface texture will give the skived fin heat sink a uniform and matte finish.

• Powder coating

In this process, you will use an electrostatic charge to apply dry powder before curing it with heat.

The dry powder you will use is a thermoset polymer or a thermoplastic polymer.

This powder will form a surface finish on the skived fin heat sink that is more durable than regular paint.

• Anodized finish

Anodizing is the process of electrochemically creating a durable and corrosion-resistant surface finish.

It entails dipping the skived fin heat sink in a bath of electrolyte acid then passing an electric current through the bath.

This effect will form a bond to the skived fin heat sink.

The surface finish will not peel or chip and you can have extra processes done to it.

• Clear chromate finish

In this process, you will apply chromate coating using an electrochemical process to coat the skived fin heat sink.

It will form a decorative surface finish to the skived fin heat sink and also maintain its electrical conductivity.

• Electroless nickel plating

This is a chemical technique requiring no electrical current similar to that found in electrochemical processes like anodizing and clear chromate.

An electroless nickel plating will form an even metal layer on the skived fin heat sink.

Besides, for you to nickel plate the skived fin heat sink, you first need to conduct silver plating.

• Mill finish

This is the process of applying a surface finish on a skived fin heat sink once it exits the rolling mill or skiving machine.

Mill finish is normally rough and does not have a luster and may contain oxidation spots or contamination spots with the mill oil.

Besides, you will need to perform the following after conducting the mill surface finish process before considering the skived fin heat sink complete:

1. Machining
2. Polishing
3. Industrial etching, etc.

• Polishing

In this process, you will use an abrasive material to conduct a surface finish on the skived fin heat sink.

Polishing entails the elimination of nicks or scratches from the skived fin heat sink.

Besides, it will also enhance the luster and shine of the skived fin heat sink.

Once you polish the skived fin heat sink, you prevent oxidation, contamination, and corrosion.

• Silver plating

This is the process of electrodepositing a material on the skived fin heat sink.

Here, you will apply a silver layer on the skived fin heat sink at a thickness level of between 10 nanometers and 25 nanometers.

Silver plating will provide suitable anti-fretting, enhance electrical conductivity, and improve skived fin heat sinks against corrosion.

• PVDF

This stands for polyvinylidene fluoride and is a non-reactive thermoplastic fluoropolymer that you will produce by polymerizing vinylidene difluoride.

It offers suitable color and gloss maintenance.

Where Can You Use Skived Fin Heat Sink?

A skived fin heat sink will offer maximum heat transfer in areas with limited available space and high ventilation levels.

Besides, they are an affordable option when considering the low cost of tooling and enhanced fin surface area.

A skived fin heat sink will find its use in the following applications:

• Automotive parts
• Computer components such as graphic processing units [GPUs]
• Electronic components such as LEDs and transistors
• Industrial equipment and parts
• Telecommunication equipment
• Lighting lamps
• Household equipment
• Satellite equipment

What Are Some Design Guidelines To Consider When Making Skived Fin Heat Sinks?

Here are some values that indicate the limitation and suitable values in skived fin heat sinks that are of high quality and cost-effective:

• A maximum fin gap or spacing of 8.0 mm or 0.31 inches
• A minimum fin gap or spacing of 0.1 mm or 0.00 4 inches
• An unlimited maximum width
• A maximum fin length is 500 mm or 20 inches
• A maximum fin height of 100 mm or 4 inches
• The material construction is copper [C11000] or 6063 or 1060 aluminum alloys
• The recommended fin height is less than 50 mm or 2 inches
• The recommended thickness for the aluminum fins is between 0.2 mm and 1.2 mm or 0.008 inches and 0.047 inches
• A recommended copper fin thickness of between 0.1 mm and 0.6 mm or 0.004 inches and 0.024 inches

What Are Some Features Of A Skived Fin Heat Sink?

Some of the features you can find in a skived fin heat sink include the following:

• Plastic push-pin attachment that allows for simple insertion
• Minimal cost tooling for the non-standards
• The plastic pins allow for the integrity of the printed circuit boards [PCBs]
• Enhanced thermal performance
• No interface or joints between the base and the fins
• Availability of high fin density as opposed to extrusion processes
• A high aspect ratio of up to 50
• Short lead time
• Extremely thin fins
• Maximum heat dispersion within forced convection that has high airflow
• Ability to include heat pipes to further enhance the performance
• Extended serving duration due to an anti-oxidation surface finish treatment

What Are Some Major Categories Of Skived Fin Heat Sinks?

Some of the main categories of a skived fin heat sink are active, passive, and hybrid.

Here is how these categories of skived fin heat sink compare:

Passive Skived Fin Heat Sink

This category of skived fin heat sink will apply the convection methodology when cooling parts.

Heat will move up towards the fins of the skived fin heat sink because of its lightweight.

Besides, heat will not go to other parts via other forces of control mechanisms.

A passive skived fin heat sink achieves a high rate of heat dispersion and natural convection through the application of heat spreaders.

The skived fin heat sink may realize maximum heat transfer through convection and radiation processes.

passive skived fin heat sink

The convection process will occur continuously and make the air to flow around and inside the skived fin heat sink.

Passive skived fin heat sinks are cost-effective but are less effective than active skived fin heat sinks.

To sustain a suitable level of operating temperature, skived fin heat sinks depend on heat spreaders, pipes, sinks, or thermal interface materials [TIM].

Active Skived Fin Heat Sink

This category of skived fin heat sink contains additional fans in it to achieve suitable cooling within the parts.

The function of the fans is to blow the hot air inside the parts towards the skived fin heat sink.

This blowing effect will enhance the rate of airflow during the convection process which will, in turn, increase heat dissipation rate.

active skived fin heat sink

Some situations require you to use case fans as opposed to standard fans when drawing cool air from the surrounding environment.

The fans will also blow out hot air from the parts to the environment and this proves efficient as it enhances the thermal gradient of the heat sink.

Active skived fin heat sinks can use several active cooling mechanisms such as the following to achieve suitable rates of heat transfer:

1. Fans
2. Forced liquids
3. Blowers
4. Thermoelectric coolers [TECs]

Hybrid Skived Fin Heat Sinks

This category of skived fin heat sink will use a combination of passive and active skived fin heat sinks.

However, a hybrid skived fin heat sink is less common and normally operates with control systems to cool units depending on the temperature requirement.

hybrid skived fin heat sink

For instance, when the heat sink is functioning at cool levels, the system cools passively and not actively.

However, when the temperatures reach a higher level, the active part will activate and assist in cooling the parts.

What Are The Other Types Of Heat Sinks Besides Skived Fin Heat Sink?

There are several types of heat sinks available in the market and they include the following:

Extruded Heat Sinks

Most heat sinks come through the extrusion process of aluminum alloy.

Extruded heat sinks are affordable and you can customize them.

Besides, their performance ranges from low to high.

extruded heat sink

Their size depends on the size of the extrusion machine.

Bonded Heat Sinks

These heat sinks are suitable for applications requiring large heat sinks.

Besides, the base and the fins in bonded heat sinks can be from different materials.

Also, you can use both copper and aluminum to make the fins thereby enhancing thermal performance.

bonded heat sink

They are costly and provide moderate performance.

Stamped Heat Sinks

Here, you will stamp then solder metal fins on a base.

These heat sinks are suitable for low-power applications.

stamped heat sink

Besides, they are affordable and easy to make however, they provide low performance.

Forged Heat Sinks

These heat sinks are made through the compression of copper or aluminum through cold or hot processes.

forged heat sink

They provide medium performance and you can make them affordably and in large quantities but have limited designs.

CNC Machined Heat Sinks

These will provide high thermal conductivity, enabling you to attain complex geometries.

CNC machined heat sink

For this reason, the design is flexible but they are expensive and take time to make.

How Will You Identify A Skived Fin Heat Sink?

It is simple to identify a skived fin heat sink as they have a curve where blades end.

Also, the fins have a slight curve and are not entirely vertical, and this gets noticeable as the fins get longer.

What Is The Price Of A Skived Fin Heat Sink?

The price will range anywhere from 10 USD.

Of course, we offer competitive prices for all heat sinks.

What Factors Will Affect The Cooling Capacity Of A Skived Fin Heat Sink?

Some of these factors include the following:

• Fin design
• Surface finish and color
• Thermal resistance
• Cooling material
• Heat sink attachment
• Thermal interface

How Does Skiving Heat Sink Guarantee Optimal Thermal Performance?

Skiving heat sinks will guarantee suitable thermal performance since they lack joints between the fins and the base.

This is because skived fin heat sinks are made from a single block, therefore, providing low thermal resistance.

What Attachment Methods Can You Use On Skived Fin Heat Sinks?

The attachment method is how you will mount the skived fin heat sink to components that you intend to regulate their temperature.

Some of the attachment methods you can use include the following:

• Epoxy
• Thermally conductive tapes
• Wire form z-clips
• Threaded standoffs
• Clips
• Push pins from brass or plastic

What Are Some Future Trends Of Skived Fin Heat Sinks?

One of the future trends in the manufacture of skived fin heat sinks is the use of Carbon Nanotubes [CNT].

This is because they possess high thermal and electrical properties.

Other materials you can use include the following:

• Metal-diamond composites
• Graphene
• HOPG [highly ordered pyrolytic graphite]

I know you may also like bonded fin heat sink, pin heat sink, and anodized aluminum heat sink.

Contact us now for all your skived fin heat sinks