电子制造行业问答、工资福利与经验 · 智问盟
电子制造行业的公开问答、工资福利、职业发展和经验分享。
电子制造行业的公开问答、工资福利、职业发展和经验分享。
manufacturing-electronics
Traceability in electronics manufacturing sounds simple until the line is moving and someone has to scan every reel, lot, panel, operator step, test result, and rework note without holding everyone up. On paper, more da…
manufacturing-electronics
I used to think PCB rework was mostly about having a steady hand under the microscope. That helps, but it is not the whole job. The real problem is knowing why the board came back in the first place. A solder bridge can…
manufacturing-electronics
SMT回流焊温度曲线不能只照锡膏厂家推荐值直接跑。推荐曲线只是起点，真正上线时还要看板厚、铜面积、元件密度、BGA和大电感位置，还有炉子每个温区的实际状态。 我遇到过一款板，首件看起来能过，但小批量后出现立碑和少锡。开始大家以为是印刷问题，后来贴热电偶重新测，发现小料区升温太快，大铜皮附近又吃热，整板温差比想象大。后面把预热段拉平一点，回流峰值没有盲目加高，问题才稳定下来。 调曲线时我会先把不良类型分清楚：虚焊、连锡、立碑、空洞、元件…
manufacturing-electronics
AOI误报太多，不能简单让操作员一直点通过，也不能把阈值调松就当解决了。误报多的时候，线上会慢，IPQC也会烦，最后真正的不良反而容易被淹掉。 我遇到过一条线，电阻旁边的丝印反光一直被判成偏移，刚开始大家都怪AOI程序。后面工程师一起看了几块板，发现同一位置在换灯角度后误报少很多，但另一个焊点的少锡又容易漏。最后不是单独调一个参数，而是把光源、拍照区域、元件库高度和首件确认一起改。 现场要先把误报分类：反光、锡珠、偏移边界、极性识别、…
manufacturing-electronics
Electronics assembly looks clean, but it can wear you out in a quiet way. One wrong part, one lifted pad, one missed orientation mark, and the board comes back to your station. I learned to slow down when the line start…