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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
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
SMT 线一换料就出问题，现场看起来像设备在闹，其实很多时候是前后段交接没说清楚。料号相近、飞达位置改过、首件确认赶时间，后面 AOI 报一堆才开始回头查。 我见过最烦的一种情况，是小批量多型号一直切，大家都知道要核对 BOM，但忙起来就只盯系统扫码，没认真看板面方向和替代料备注。等到返修台堆起来，再追谁签的首件已经没太大意义。 同行如果也做电子制造，你们换线时会让谁最后拍板？工程、线长、IPQC，还是三边都签了才开跑？
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
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…