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PCBA贴片不良原因分析

发布时间:2020-01-03 编辑作者:金致卓 阅读:388

PCBA贴片生产过程中,由于操作失误的影响,容易导致PCBA贴片的不良,如:空焊,短路,翘立,缺件,锡珠,翘脚,浮高,错件,冷焊,反向,反白/反面,偏移,元件破损,少锡,多锡,金手指粘锡,溢胶等,需要对这些不良开展分析,并开展改进,提高产品品质。

一、空焊

HONGJIAOTEYIXINGJIAORUO; WANGBANKAIKONGBUJIA; TONGBOJIANJUGUODAHUODATONGTIEXIAOYUANJIAN; GUADAOYALIDA;  YUANJIANPINGZHENGDUBUJIA(QIAOJIAO,BIANXING)HUIHANLUYUREQUSHENGWENTAIKUAI;  PCBTONGBOTAIZANGHUOSHIYANGHUA; 

捕鱼游戏攻略 PCBBANHANYOUSHUIFEN;JIQITIEPIANPIANYI;HONGJIAOYINSHUAPIANYI;  JIQIJIABANGUIDAOSONGDONGDAOZHITIEPIANPIANYI;  MARKDIANWUZHAODAOZHIYUANJIANDAPIAN,DAOZHIKONGHAN; 

二、短路

捕鱼游戏攻略 WANGBANYUPCBBANJIANJUGUODADAOZHIHONGJIAOYINSHUAGUOHOUDUANLU;YUANJIANTIEPIANGAODUSHEZHIGUODIJIANGHONGJIAOJIYADAOZHIDUANLU;HUIHANLUSHENGWENGUOKUAIDAOZHI;YUANJIANTIEPIANPIANYIDAOZHI;WANGBANKAIKONGBUJIA(HOUDUGUOHOU,YINJIAOKAIKONGGUOZHANG,KAIKONGGUODA); HONGJIAOMEIFACHENGSHOUYUANJIANZHONGLIANG;  WANGBANHUOGUADAOBIANXINGDAOZHIHONGJIAOYINSHUAGUOHOU;HONGJIAOTEYIXINGJIAOQIANG;  KONGTIEDIANWEIFENGTIEJIAOZHIJUANQIDAOZHIZHOUBIANYUANJIANHONGJIAOYINSHUAGUOHOU; HUILIUHANZHENDONGGUODAHUOBUSHUIPING;

三、翘立

TONGBOLIANGBIANDAXIAOBUYIZAOCHENGLALIBUYUN; YURESHENGWENSULVTAIKUAI;  JIQITIEPIANPIANYI;  HONGJIAOYINSHUAHOUDUJUN;  HUIHANLUNEIWENDUFENBUBUYUN; HONGJIAOYINSHUAPIANYI;  JIQIGUIDAOJIABANBUJINDAOZHITIEPIANPIANYI; JIQITOUBUHUANGDONG;  HONGJIAOTEYIXINGGUOQIANG;  LUWENSHEZHIBUDANG;  TONGBOJIANJUGUODA;  MARKDIANWUZHAODAOZHIYUANYOUYANGDAPIAN

四、缺件

ZHENKONGBENGTANPIANBULIANGZHENKONGBUGOUDAOZHIQUEJIAN; XIJUDUSAIHUOXIJUBULIANG;  YUANJIANHOUDUCESHIBUDANGHUOJIANCEQIBULIANG; TIEPIANGAODUSHEZHIBUDANG; XIJUCHUIQIGUODAHUOBUCHUIQI;  XIJUZHENKONGSHEDINGBUDANG(SHIYONGYUMPA); YIXINGYUANJIANTIEPIANSUDUGUOKUAI;  TOUBUQIGUANPOLIE;  QIFAMIFENGHUANMOSUN; HUIHANLUGUIDAOBIANSHANGYOUYIWUCADIAOBANSHANGYUANJIAN;

五、锡珠

HUILIUHANYUREBUZU,SHENGWENGUOKUAI;  HONGJIAOJINGLENGZANG,HUIWENBUWANQUAN;  HONGJIAOXISHIZAOCHENGPENJIAN(SHINEISHIDUTAIZHONG); PCBBANZHONGSHUIFENGUODUO;  JIAGUOLIANGXISHIJI;  WANGBANKAIKONGSHEJIBUDANG; XIFENKELIBUYUN。

六、偏移

电路板上的定位基准点不清晰;电路板上的定位基准点与网板的基准点沒有对正;电路板在印刷机内的固定夹持松动,定位模具顶针不到位;印刷机的光学定位系统故障;焊锡膏漏印网板开孔与电路板的设计文件不符合。要改进PCBA贴片捕鱼游戏攻略的不良,还需在各个环节开展严格把关,防止上一个工序的问题尽可能少的流到下一道工序。

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