Can the induction heating brazing machine weld aluminum and copper?

The induction heating brazing machine can weld aluminum and copper.

Theoretically speaking, as long as the temperature of the two mother bodies of the aluminum and copper welding parts can reach about 500 degrees, and as uniform as possible, the welding can be achieved. The welding wire is welded by Wei Oding ALCU-Q303 copper-aluminum welding wire, but unfortunately The induction welding machine is difficult to control the copper and aluminum joints, especially the induction temperature of aluminum, and the induction frequency of copper and aluminum are different. It is difficult to make the temperature of the two metals to achieve uniform and synchronous heating. This is an induction device A difficulty in raising the temperature, not a difficulty in welding itself.

Aluminum and copper belong to dissimilar metal welding, and the following problems are prone to occur when dissimilar metals are connected:

1. Metallurgical incompatibility, formation of brittle compound phase at the interface;

2. Mismatch of thermal and physical properties, resulting in residual stress;

3. The huge difference in mechanical properties leads to mechanical mismatch of the connection interface, resulting in serious stress singular behavior.

The existence of the above-mentioned problems makes the connection of dissimilar metals difficult, and also affects the structure, performance and mechanical behavior of the joint, adversely affecting the fracture performance and reliability of the joint, and even seriously affecting the integrity of the entire structure. Induction heating brazing is the most suitable method for the connection of dissimilar metals. Since the base material does not melt during the brazing process, the possibility of forming inter-compounds between dissimilar metals is greatly reduced, and the integration of dissimilar metal joints is effectively improved. performance.