Our company has a reasonable talent structure and experienced technical team to provide customers with high-quality AL Extrusion Heat Sink, OEM Folded Fin Heat Sinks, Zipper Fin Heat Sink and services. We strive to meet all legal and ethical requirements and, whenever possible, we strive to go beyond them. We have an experienced design team that can provide customized services according to the different needs of customers. Whether we are pursuing innovation or expanding our business, we carry the responsibility to move forward. Our company has many years of production and sales experience and we can well understand and cooperate with customers' needs and make response.
Technical principles of Friction Stir Welding
The welding joint is rotating, heating and moving on the surface of the product, high temperature makes the material soften, and the welding seam is weld by joint.


Typical friction stir welding in product surface
FSW seam in the material surface (cross section)

a: Welding area
b: Heat joint affected area
c: Heat affected area
d: Material

No bubble and flawless in weld seam.
Smooth surface, welding performance is good.
Friction stir welding feature:
1. Simple welding: automation, No pretreatment, No protection gas
2. Environment protection: No smoke, Nonradiative
3. Automation of welding: Similar to milling machine, Easy to operate the machine, Automatic welding, Low noise & No pollution.
4. Small shrink & small deformation
Suitable for various forms of welding

FSW welding joint performance
Comparison of impact toughness (5083 is LF4)

AL FSW joint performance (7075,2014,2219/5083)

FSW vs MIG, Deformation comparison

FSW strengths
Soild state welding technology, no filler, with excellent connector performance.
Can be welded aluminum, copper, magnesium and other nonferrous alloys non-ferrous metals.
This method is highly automated.
Very suitable for aluminum or copper liquid cooling plate welding.

FSW in liquid cooling plate
FSW technology is wildly used in high power machine, aviation, telecom, military and etc.
In liquid cooling plate, traditional welding method is brazing, electron beam welding and etc, but this welding method can not do well in both good sealing and good pressure performance, so there are high defect rate. But FSW can do better in good sealing and good pressure performance, so FSW technology is using for liquid cooling plate.

FSW process in machining liquid cooling plate


FSW Liquid cooling plate structure
Leaking test
Pressure: 2MPa, no leaking in 15 min
FSW Pressure: 4MPa, no leaking in 20 min, better performance
Calculation: In 15mm cold plate, FSW 1mm structure can bear at least 10 MPa pressure.


We are committed to providing customers with a full range of services such as consulting, design and production of the OEM Aluminum GPU Water Cooling Block. We adhere to the 'integrity as the fundamental, quality for survival, reputation win the market' business philosophy, to provide users with premium products and service, and is willing to sincerely cooperate with customers all over the world! On the one hand, our company pays attention to personnel training, improves the production technology level of all staff, on the other hand, pays attention to infrastructure construction and increases investment.
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