Friction Stir Welding (FSW) is a method used to create a sealed gap by joining baseplates and cover plates together, forming a water cooling plate. This process falls under the category of seamless connection forming. The FSW water cooling plate process offers flexibility in design, with no visible weld points but high reliability. It allows for the manufacturing of very thin water cooling plates, with the entire water cooling plate thickness ranging from 5-7mm, meeting lightweight standards. The application of the FSW process enables designers to have greater flexibility in their designs and turn their innovative designs into products more effectively.

Furthermore, the water channels in the water cooling plate become easier to configure due to the application of the friction stir welding process. These channels can be designed as single-pass or multi-pass, or they can be produced using an extrusion and subsequent welding method, allowing for rapid mass production and a significant increase in production capacity.