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贴片机资讯
SMT焊膏质量与测试
来源:廣州煌牌自動設備有限公司    日期:2013-03-23    浏览量:

     焊膏是由合金焊粉、焊剂载体等组成的膏状稳定混合物。在表面安装技术中起到粘固元件,促进焊料润湿,清除氧化物、硫化物、微量杂质和吸附层,保护表面防止再次氧化,形成牢固的冶金结合等作用。焊膏印刷是SMT的第一道工序,它影响着后续的贴片、再流焊、清洗、测试等工艺,并直接决定着产品的可靠性。据统计,电子产品72%的缺陷和失效与焊膏相关,因而焊膏的性能对于SMT癞子斗地主来说是至关重要的。随着细间距(FPT)、球栅阵列(BGA)、免清洗(NC)、0201等技术的迅速发展,以及有关法规对某些损害环境和健康的材料的限制或者禁止,对焊膏的成分与性能要求越来越高。在市场、环保、法律因素的约束和推动下,国内外的各种组织、科研机构和公司对焊膏的研究与开发日益深入。

2HEJINHANFEN

     HANFENDEGUANJIANXINGNENGCANSHUYOUXINGZHUANG、CHICUNFENBUHEHANYANGLIANG,ERZHEIXIEYOUQUJUEYUZHIFENJISHU。QIZHIZAOFANGFAZHUYAOYOUWUHUAFA(RULIXINWUHUA、CHAOSHENGWUHUA、DUOJIKUAILENGDENG)HEHUAXUEDIANJIECHENJILIANGLEIFANGFA[1]。WOMENCAIYONGLEJIANYIDELIUTIZHENKONGPENWUFA,QIJIBENYUANLISHI:ZAIZHENKONGTIAOJIANXIA,YONGGANYINGJIARERONGRONGSn63Pb37HEJINHANLIAOBANG,RANHOUJIANGJINSHUYELIUYONGGAOSUGAOYADEPENSHEDANQIJISUIERWUHUAWEIXIXIAODEJINSHUYEDI,RANHOUZAILENGQUEMEIZHIZHONGKUAISULENGQUENINGGUCHENGWEIFENMO,ZUIHOUJINXINGFENJIHESHOUJI。WUHUAFALENGQUESUDUJIKUAI,DAFUDUJIANXIAOLEHEJINCHENGFENPIANXI,ZENGJIALEHEJINGURONGNENGLI,CHENGXINGFENMOJUNYUNXIXIAO。YOUYUCAIYONGBAOHUQIFEN,HANYANGLIANGDI。ZHEIZHONGFANGFAHAIJUYOUQIUXINGLVGAO、CHICUNFENBUFANWEIXIAO、WURANXIAODENGYOUDIAN。BUTONGFANGFAZHIBEIDEHANFENXINGMAORUTU1(a)ZHI(e)SUOSHI。TU1 (a)ZHONGHANFENCHENGSHUSONGDUOKONGDEHAIMIANZHUANG,BUNENGSHIYONG。HANFENXINGZHUANGZUIHAOSHIQIUXINGHUOZHELEIQIUXING,RUTU1 (f)[2]。QIUXINGHANFENDEBIBIAOMIANXIAO,NENGLIANGDI,ZAIZHIZAO、CUNCHUHEYINSHUAZHONGBUYIYANGHUA,ERQIEYINSHUASHIBUHUIDUSAIWANGKONG。HANFENDEYANGHUAHUIDAOZHIKEHANXINGCHA、QIAOJIE、HANXIQIUDENGQUEXIAN。TU1 (b)ZHONGHANFENCHICUNFENBUBUJUN,QIUYUQIUZHIJIANYOUZHANJIE,XINGZHUANGBUGUIZE,ERQIEQIUDEBIAOMIANBUGUANGHUA,YOU“XIAOWEIXING”KELIHEKONGDONG,JIANTU1 (d),YEBUNENGSHIYONG。QIUDEBIAOMIANQUEXIANHUIDAOZHIZAIHANJIEGUOCHENGZHONGSHOURESHENGWENSUDUBUYIZHI、KONGDONGZHONGCANLIUQITI、HANLIAOFEIJIANXINGCHENGHANZHUDENGHANJIEWENTI。YOUStokesGONGSHIF=6pahv(FSHIBANJINGWEIaDEQIUXINGKELIYISUDUvZAINIANXINGWEIhDEJIEZHIZHONGYUNDONGSUOSHOUDELI)KEZHI,CHICUNFENBUDEBIANHUAZHIJIEYINGXIANGZHEHANGAODEZHANXING、LIUBIANXINGNENG,JIERYINGXIANGDAOYINSHUAZHILIANG。TU1(c)WEIBIJIAOGUIZEDEQIUXINGHANFEN,DANHAISHIYOUYIXIEZHANLIAN。TU1(e)SHIGUIZEHANFENBIAOMIANXINGMAO,QIZHONGHEISEDEWEIFUXIXIANG,ERLIANGQUWEIFUQIANXIANG。TU1 (f)ZEWEIAMTGONGSIDE-325/+500MUDEGUIZEQIUXINGHANFEN。SMTHANGAOCHANGYONGDEHANFENWEIGUANGHUAQIUXING,CHICUNFENBUWEI20~75WEIMI,YANGHANLIANGDIYU0.3%。

(a)JIQIBUGUIZEHANFEN        (b)BUGUIZEHANFEN           (c)JIAOGUIZEHANFEN

癞子斗地主 (d) bZHONGAQIUBIAOMIANKONGDONG   (e)JIAOGUIZEHANFENBIAOMIAN        (f)GUIZEQIUXINGHANFEN

3HANJIZAITI

     MIANQINGXIYAOQIUHANJIZAITIBAOCHICHUANTONGHANGAOGONGNENGWAI,HAIYAOJUBEIHUIFAXINGHAO、HANHOUCANLIUWUSHAO、WUFUSHI、BOMOJIANYINGCHENGDUOXINGDENGTEDIAN。HANJIZAITIZAIHANGAOZHONGDEBIZHONGYIBANWEI10%~20%,TIJIBAIFENBIWEI50~60%。ZUOWEIHANFENZAITI,TAQIDAOJIEHEJI、ZHURONGJI、LIUBIANKONGZHIJIHEXUANFUJIDENGZUOYONG。TAYOUCHENGMOWUZHI、RONGJI、HUOHUAJI(BIAOMIANHUOXINGJI、CUIHUAJI)、HUANSHIJI、WENDINGJI、KANGYANGHUAJI、CHUBIANJIDENGZUCHENG。WEILEDADAOMIANQINGXIXIAOGUO,JIANYIGUXINGWU、RONGJI、HUOXINGJIFENBIEZHANHANJIZAITIDE25%、50%、10%ZUOYOU。GUXINGWUCAIYONGREGUXINGSHUZHIYIJIRENZAOHECHENGSHUZHI,HANHOUZAIHANDIANBIAOMIANXINGCHENGJIANYINGERTOUMINGDEBOMO。YIBANYINGCAIYONGDUOYUANCHUNLEIDEHUNHEWUZUOWEIRONGJI,JIANYIXUANYONGGAO(YUE230℃)DI(YUE160℃)FEIDIAN、GAO(30~1000cps)DI(3~20cps)ZHANDUDECHUNLEIDIAOPEICHENGYIDINGDEZHANXINGRONGJI,SHIZHIZAIYIGEJIAOKUANDEWENDUFANWEINEIJUYOUXIANGYINGDEHUIFASUDU,QIE150~220℃ZHIJIANHUIFAYINGYOUMANDAOKUAI。DUIYUDIFEIDIANCHUN,YOUYUHUIFAXINGJIAOHAO,RONGYIDAOZHIHANGAOFAGANSHIQUZHANXING,SHIGONGZUOSHOUMINGSUODUAN;ERGAOFEIDIANCHUNYOUZENGCHOUHE“BAOSHI”ZUOYONG,KEGAISHANGONGZUOSHOUMINGHEYINSHUAXINGNENG,DANSHIRONGYIXISHI,HUIFAYEBUCHEDI。HUOXINGJISHIYONGYOUJIRUOSUANERBUSHIYONGCHUANTONGDEHANLUSUDEHUOXINGJI,YIDADAOHANHOUFUSHIXINGXIAODETEDIAN。WEILEMIBUHUOXINGBUZU,KESHIYONGFENZIJIEGOUDAIYOUWANJIHEQIANGJIDEERYUANSUOSUAN。DUIHANJIZAITIZHILIANGZHAN9%DEHANGAOJINXINGDEREFENXI(TU2)FAXIAN:ZAI100~150℃ZHIJIANHUIFAHENKUAI,ZAI212℃FUJINYEYOUJIAODADEHUIFA。BIAOMINGZAIYUREQU(125~150℃)HEHANJIEQUQIBUTONGZUFENFENBIEQIDAOLEQINGXIHEHUOHUABEIHANBIAOMIANDEZUOYONG,RANHOUHUIFA,FUHEGONGYEZHONGDIANXINGDEZAILIUHANWENDUGONGYIQUXIANYAOQIU。ERDAO220℃SHI,ZHONGLIANGBAIFENBIZHIYOU95%,CANLIUWUJIAOSHAO,QIECHENGYICENGJIANYINGTOUMINGDEBOMO,BUBIQINGXI。

4JIBENXINGNENGCESHI

癞子斗地主 4.1ZHANDUJIQITEXING

癞子斗地主     HANGAODEZHANDUZHUYAOYUQIZHONGDEFENMOHANLIANG、FENMOCHICUN、HANJIZHANDUXIANGGUAN[3](JIANBIAO1),DUIZHANDUDEYAOQIUSUIYINGYONGFANGFADEBUTONGERYI。ZHANDUTAIGAO,HUIZHANLIANWANGKONG;TAIDIWUFABAOXINGQIEWUFAZHANGUYUANQIJIAN。HANGAOSHIYIZHONGJIASUXINGLIUTI,YOUCHUBIANXING。QIZHANDUSUISHIJIAN、WENDU、JIANQIEQIANGDUDENGYINSUERFASHENGBIANHUA。GENJUIPC-TM-650(2.4.34)CESHIFANGFA,ZAI25±1℃XIA,CAIYONGNDJ-7XINGXUANZHUANSHIZHANDUJIYI7.5ZHUAN/FENZHONGLIANXUXUANZHUAN2FENZHONG,WENDINGHOUDUSHU,JIZHONGCHANGYONGJINKOUHANGAODEZHANDUDOUZAI600~730Pa.sFANWEINEI,SHIHEYUMOBANYINSHUA。YOUYUHANJIZAITIWUZHIHANYOUHENDUOQIANGJI、WANJI、YIJISUOJI,SUOYIQINGJIANHENZHONG,TONGGUOJIARUYIDINGLIANGDEQINGHUABIMAYOUZAIJIAOBANHEJIANQIESHIPOHUAIQINGJIAN,KEDADAOTU3DECHUBIANXING[4](QIEBIANBIANXI)XIAOGUO。YIBANJIANGCHUBIANJIKONGZHIZAI7%ZUOYOU,YIBIANYUJIAOBAN、LOUYIN、LIUPING、KANGTALUOHEZHANGUYUANJIAN。

癞子斗地主 BIAO1HANGAOJINSHUHANLIANG、ZHANDU、CHICUNFENBUYIJIYONGTU

癞子斗地主 JINSHUHANLIANG       ZHANDU

(Pa.s) CHICUN

癞子斗地主 (mm) ZHU YAO YONG TU

癞子斗地主 90%      600~1000    40-75       YIBANMOBANYINSHUA

癞子斗地主 90%      400~600      20-36       XIJIANJUSIWANGYINSHUA

85%      400~600      20-45       YIBANSIWANGYINSHUA

癞子斗地主 80%      300~400      20-45       DINGLIANGFENPEIQIZHUSHE

75%      200-300      40-75       ZHENTOUZHUANYIDISONG

4.2TALUO

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4.3XIJIANJUYINSHUA

癞子斗地主    XIJIANJUYINSHUAYAOQIUHANFENCHICUNFENBUWEI20~36WEIMI,FOUZEYINGXIANGJUNYUNXINGHEFENBIANLV,SHENZHIDUSAIWANGKONG;TONGSHIYAOYOUHENHAODEBAOXINGXING,FANGZHILIUYI、TALUODENGFASHENG。TU5SHIJIANJUWEI0.4mm,HOUDU0.2mmDEYINSHUATUXING。TU5(a)SHIGANGGANGYINSHUAHOUDESAOMIAOTUXING,TU5(b)SHITU5(a)ZAI150℃BAOCHI10FENZHONGDEQINGXING。ERZHEJUNYUNWANZHENG、FENBIANLVJIAOHAO,MEIYOUPUSAN、QIAOLIANDENGXIANXIANG。

4.4HANXIQIU

    HANXIQIUDEXINGCHENGYUHANFENYANGHUA、HANJIHUOXING、HANFENCHICUNJUNYUNXING、HANGAOXISHIXING、ZAZHIDENGMIQIEXIANGGUAN。TU6SHIANZHAOIPC-TM-650(2.4.43)CESHIDEHANLIAOQIUJIEGUO。QIZHONGTU6(a)SHIZAIBURUNSHITAOCIJIPIANSHANGGANGGANGYINSHUADESAOMIAOTUXING;TU6(b)SHIMIANXIHANGAOSHIZAI208℃BAOCHI20MIAOZHONGDEQINGXING。YINBIAOMIANZHANGLIHEHANJIZAITIYUHANFENJIANDERUNSHIZUOYONG“SUOHUI”XIAOGUOHAO,YINCIYANSEQIAN;TU6(c)SHIPUTONGHANGAODEXIANGYINGQINGXING,CANLIUJIAODUO,YINERYANSEJIAOSHEN;TU6(d)DEQINGKUANGZEWANQUANBUHEGE,ZHUYAOSHIZAIKONGQIZHONGFANGZHILE6XIAOSHI,YINHUIFAHEXISHIDAOZHILEDAKELIHANZHUDEXINGCHENG。

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