1. ZAWARD CORPORATION
www.zaward.com
TEL: +886-2-2221-7098 FAX.: +886-2-2221-7200
e-mail: info@zaward.com
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ZAWARD Thermal Technology Insights
Introduction of Friction Stir Welding (FSW)
Having an issue with wide area of heat source but restricted by limitation of tooling machine to produce
size-appropriated heat sink? And conventional welding method decreases efficiency due to filler material and
consumes higher energy as well as releases fume and smoke. In this case, “Friction Stir Welding” (FSW), a
solid-state joining process that joins two materials with pin tool, is the state of the art solution and popularly used
in thermal and across other industry.
How FSW works
Placing pin tool between the joint area of two pieces of materials, the rotating shoulder creates friction heat
which softens edges of the materials to a plastic state (but not melt). As the pin tool moves along, it generates
welding pressure itself and stirs the two pieces together. Once the tool pulls away, the two pieces are joined into
one solid-state bond and made in solely of parent material.
FSW is primarily used in aluminum and complex structure such as stocked copper, diversified intensity of fins and
precision hole drilling.
Our capacity of FSW process as below: (mm)
Length Width Height Base Thickness Pitch
Maximum 1500 ∞ 240 30 -
Advantages and Benefits
Competitive Price: Join smaller extrusion block to larger size heat sink to reduce cost.
Limitless Size: Zero limitation in width gives high flexibility in larger project. (see capacity chart above)
Practical Process: No filler material, low energy consumption, shorter lead time.
Stable Quality: Similar characteristics and high resistance to fatigue stress as bond between two pieces is made of
the original material.
Advanced Technology: Simple and automatic stirring machine eliminates set-up cost and operates in
multi-directions including vertical and horizontal.
Flexibility & Functionality: Welding different alloys such as stocked copper, diversified intensity of fins and do
precision hole drilling.
Applications
- Energy system
- Transportation industry
- Liquid cooling device
- Telecom equipment
Other than FSW process, we provide complete variety of heat sink in different process like extrusion, skive, forge,
die casting and CNC machining, as well as wide range of dimensions DC/AC fan and blower.
Regarding to any issue of thermal solution and heat dissipation, we are always ready with our passionate
enthusiasm to provide you professional cooling advice. For more information of our products, please visit our
website. If you have any question, please feel free to contact us.
With Best Regards,
ZAWARD CORPORATION
Carmen Chen/ Managing Director