Numerical Simulation Analysis on Bending Properties of Copper Alloy for Lead Frame
The finite element was used to analysis the bending forming process for three different copper alloy for lead frame materials(Cu-Fe-P,Cu-Ni-S and Cu-Cr-Sn-Zn),so the minimum bend radius of corresponding materials were found and the bending properties of different materials were compared.The results show that the bending properties of Cu-0.38Cr-0.17Sn-0.16Zn is best,that of Cu-0.1Fe-0.03P is better,that of Cu-3.2Ni-0.75Si is worst.