STAGING DRAFTTechnical ranges are for preliminary assessment; they will be updated upon manufacturer confirmation.

ARMA / THERMAL MANAGEMENT

Skived heatsinks.
Single-piece.
Project-specific.

Fin and base made from the same metal. Thin fin geometries and heatsink solutions shaped according to your drawings.

Send your technical drawing ↗Explore the production process ↓

ALUMINUM & COPPEREVALUATION BASED ON DRAWINGS

Process samples of dense and straight-fin skived heatsinks — 01 / PROCESS SAMPLESingle-piece base and fin structureTaken from the image provided by the manufacturer.

SKIVING TECHNOLOGY

From base to fin,
a seamless structure.

In the skiving process, thin slices are cut and lifted from the surface of the metal to form the fins. This ensures the fins remain part of the same piece as the base.

There is no secondary joint between the fin and the base. Optimal fin spacing, material, and geometry are evaluated in conjunction with airflow, heat load, and available mounting space.

Single-piece construction

The fin and base are formed from the same metal.

Thin fin geometry

Fin thickness and placement are evaluated based on the project.

Finishing according to the drawing

Mounting surfaces, connections, and finishing requirements are addressed together.

FROM METAL TO HEATSINK

See production up close.

Short process videos showing the fin forming and finishing stages.

01 / FIN FORMING

The metal is sliced. The fins are raised.

Sequential cuts create the fin structure integrated with the base.

02 / FINISHING

The top of the fin is machined. Burrs are removed.

Top milling and brushing complete the finishing process of the part.

These videos are process examples shared by the equipment manufacturer.

TECHNICAL FRAMEWORK

Let your measurements speak the same language.

Let's review your design together by defining the length, width, and fin dimensions separately.

SKIVED HEATSINK / REPRESENTATIVE GEOMETRY

Skived heatsink showing dense and thin parallel fins attached to a single-piece base; W is width, L is length, and H is fin height.

WDirection of fin array

LDirection of fin length

HFin height from base

FIN CROSS-SECTION / ENLARGED DETAIL

In the fin cross-section, t is the thickness, p is the pitch between the center points of two fins, and g is the net gap between the surfaces.

t Fin thicknessp Fin pitchg Net gap

Not to scale. The number and spacing of the fins are illustrated representatively.

DRAFT PRODUCTION RANGES

Fin thickness (t)

0.2–1 mm

Fin height (H)

40–120 mm

Heatsink length (L)Aluminum / fin direction

50–400 mm

Heatsink width (W)Direction of fin alignment

Maximum 1600 mm

Copper heatsink length (L)

Maximum 300 mm

Fin pitch ratio (Al / Cu)

1:2–1:10

Net fin gap (g)

Pending confirmation

These ranges are for preliminary work. The feasibility of the dimensions is verified via technical drawings based on the material, geometry, and tool selection. For the fin pitch, the 1:2–1:10 ratio in the top table of the manufacturer's datasheet is used; this value is not a pitch interval in mm. The definition of the ratio and the net fin clearance are pending confirmation. Base thickness and tolerances are determined on a project-by-project basis.

MATERIAL & DESIGN

Engineering that starts
with material selection.

We address weight, mounting space, and thermal requirements together. The alloy and material condition are evaluated alongside the manufacturability of the part.

Aluminum

For projects where weight and thermal requirements are considered together.

Copper

For applications where heat conduction, weight, and part geometry are considered together.

APPLICATION AREAS

Let's evaluate it together with your project's operating conditions.

01 / POWER ELECTRONICS

Inverters and drives ↗

Power module, mounting surface, and airflow requirements.

02 / ENERGY & CHARGING

Power conversion ↗

Evaluating heat load and mechanical layout together.

03 / ELECTRONIC SYSTEMS

Telecom and server projects ↗

Available space, airflow channels, and cooling requirements.

FAQ

What you need to know
before drawing.

What is the difference between a skived heatsink and an extruded one?

In the skiving process, fins are created by cutting and lifting them from a solid block of metal. In extrusion, the profile cross-section is shaped by forcing it through a die. The appropriate method is selected based on material, fin geometry, quantity, and application conditions.

Do denser fins always provide better cooling?

Fin spacing must be evaluated in conjunction with airflow. It is just as important for air to move through the channels as it is to have a large fin surface area. Forced convection and natural convection applications may require different geometries.

What information should I provide for a quote?

Share your technical drawing, material, quantity, mounting area, and critical tolerances. For thermal assessment, include details on heat load, heat source dimensions, ambient temperature, airflow, and target temperature.

FROM DRAWING TO SOLUTION

Let’s shape your
heatsink together.

Share your technical drawing and operating conditions. We will evaluate the material, fin geometry, and finishing options for your project.

Submit a skived heatsink request ↗arma@arma.com

Drawing · Material · Quantity · Operating conditions

Skived heatsinks.Single-piece.Project-specific.

From base to fin,a seamless structure.