| 摘要 |
<p>A method for preparing a conductive metal connecting piece connected to a PCB (3) and the connecting piece prepared by the method. The method comprises the steps of: embedding an embedding layer (2) in a groove of a metal substrate (1) and conducting rolling at the embedding position so as to form a composite metal strip, wherein the metal substrate (1) is made of copper or stainless steel, and the embedding layer (2) is a copper layer, a silver layer or a copper-silver composite layer with silver on the surface; conducting softening annealing and rolling on the composite metal strip after rolling for at least two times, wherein the rolling deformation rate between the two times of softening annealing is not lager than 60%; and stamping the composite metal strip to a thickness of required specifications so as to from the conductive metal connecting piece. By means of the preparation method, the processes are environmentally friendly, and the prepared conductive connecting piece has high electrical conductivity, high stability in bonding to the PCB (3), and good formability.</p> |
