Our Copper or Aluminum Heatsink, Vacuum Brazing Liquid Cooling Heatsink, Water Cooling Plate with Copper Pipe is of various types and fashionable designs, which explains why it is so competitive in the international market. We take the accumulation of resources and capabilities with a competitive advantage as our starting point, and aim to expand our scale and improve our efficiency. We have a strong after-sales service team in multiple locations, coupled with a modern customer center, to provide professional, timely and courteous service to all customers.
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.


Our company directly face customers, understand customer needs and customer satisfaction with the quality of existing Custom Power Battery Nmc Water Cooling Block Aluminum, improve product competitiveness. Since its inception, our company has always been adhering to the competitive concept of winning by price. Our company adheres to the consistent tenet of 'quality for survival, reputation for development', actively introduces high-tech and talents and realizes the enterprise development path of large-scale operation, intensive scientific research and technology and standardized production and service procedures.
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