A THERMAL RESISTANCE COMPLEX CONNECTION METHOD FOR COPPER ALUMINUM PIPE

摘要

The present invention relates to a copper-aluminum-pipe thermal resistance hybrid connection method, in which, in order to solve problems such as high welding brittleness between conventional copper pipe aluminum pipes, easy generation of cracks and pores, and low cooling efficiency, A copper pipe having a rotary swaging necked end head is attached to the aluminum pipe and the aluminum pipe under the action of the impact rod, and an electrode holder composed of a lower electrode, a clamp is installed in the working cavity of the upper electrode and the lower electrode, A cooling gas injection device is installed in a working cavity portion, a cooling water pipe is installed in the upper electrode and the lower electrode and in the working cavity, and the connection process is performed by setting parameters, pre-installing a copper pipe aluminum pipe, Heat Resistance Operation and Impact Bar Hot Forging Complex Step . The impact rod is freely centered during the process and the copper aluminum matching area is tightly integrated and fused, accelerating the work cycle and making the work process smooth.