【摘要】 介绍硬盘磁头激光锡球焊接的原理和优点;统计分析了焊接缺陷主要是表现为锡球断路、焊锡过流、锡球分布不对称以及烧焦和锡溅,主要受锡球大小、焊盘相对位置以及有关加工参数的影响。通过有限元模拟,得出最优的锡球直径和焊盘位置参数。生产实践证明,模拟结果数据效果良好,产品合格率增加。更多还原

【Abstract】 Introduces the principle of the tin-ball laser bonding on hard disk sliders and its merit. By statistical analysis, the defects are tin-ball short, overflowing,dissymmetry,splash and scorch,which are mainly affected by the tin-ball size,pad positions, and process parameters .By finite element analysis, obtain the optimum of tin-ball diameter, the distance of the magnetic head pad to the suspension pad and the distance of the suspension pad to the magnetic head pad .The experiment shows that the simulation result is good and the acceptability is improved sharply.更多还原