Die casting technique is a mature and widely used approach for metal forming. With the fast development of new energy automobiles, this technique has become the first choice for the batch production of the cooling box for electric motor controllers. However, if the problems including die-casting impurities and voids are not effectively controlled, using seals or friction welding approaches still have the potential of critical leaking problems and therefore the failure rate remains high.

Die casting technique is a mature and widely used approach for metal forming. With the fast development of new energy automobiles, this technique has become the first choice for the batch production of the cooling box for electric motor controllers. However, if the problems including die-casting impurities and voids are not effectively controlled, using seals or friction welding approaches still have the potential of critical leaking problems and therefore the failure rate remains high.

Die casting technique is a mature and widely used approach for metal forming. With the fast development of new energy automobiles, this technique has become the first choice for the batch production of the cooling box for electric motor controllers. However, if the problems including die-casting impurities and voids are not effectively controlled, using seals or friction welding approaches still have the potential of critical leaking problems and therefore the failure rate remains high.