The water-cooling plate adopts the friction stir welding process, which makes the design of the water channel more free, and the reliability of the seal is better. At the same time, it can be treated with a hard anode surface.
Friction stir welding is a solid-phase connection method under the action of mechanical force and frictional heat. In friction stir welding, a cylindrical stirring head with a special shoulder and needle protrusion is rotated and slowly inserted into the workpiece to be welded. The frictional shear resistance between the stirring head and the welded material generates frictional heat, which makes the adjacent area of the stirring head The material is thermally plasticized (welding temperature generally does not reach or exceed the melting point of the material to be welded). When the stirring head rotates and moves forward, the plasticized metal material transfers from the front to the back of the stirring head and moves on the stirring head. Under the combined action of friction, heat generation and forging and pressing on the surface of the workpiece, a dense solid phase connection joint is formed.
Technical features:
1. There are no fusion welding pore defects, no element burnout, no thermal cracks in the weld, and high reliability without leakage is always guaranteed;
2. There is no segregation of elements and structure during solidification, and the microstructure of the welding zone is isotropic with no excess height;
3. The welding process is simple and belongs to the type of welding without flux: no wire filling, no grooves, no pre-welding treatment, no protective gas;
4. The processing process is environmentally friendly, without light and gas pollution;
5. The welding area has small shrinkage and small deformation;
6. Due to the high cost of equipment, the current processing cost is high, and the proficiency of skilled workers is high.
