1results about How to "Remove inclusions" patented technology

The application discloses a kind of copper-aluminum composite strip continuous casting and rolling preparation methods of ultrasonic vibration assisted reinforcement, it is related to metal laminated composite material preparation technical field, including preheating treatment to copper strip and control liquidus temperature;The copper strip after preheating is introduced with liquidus into the casting and rolling crystallization area formed by casting and rolling roll and carries out solid-liquid casting and rolling composite;The composite strip obtained after casting and rolling is carried out hierarchical cooling;The composite strip after cooling is sequentially carried out cold rolling finishing and low-temperature stress relief annealing.The application fundamentally eliminates interface pore inclusion and oxide residue, solves the technical problem of large dispersion of bonding strength in conventional casting and rolling process;Grain refinement strengthening and interface structure optimization synergistically improve the interface mechanical properties;Effectively release the interface thermal stress generated by the difference of copper-aluminum thermal expansion coefficient, avoid interface cracking during cooling process;Bonding strength consistency is high, can meet the stringent requirements of new energy automobile battery connecting piece and other high reliability application fields.