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印刷工艺参数对印刷质量影响大吗?

来源: 作者: 添加日期:2020-04-24 查看次数:0

在SMT贴片加工中对印刷质量的影响因素有很多,其中最主要也是最直接的因素我觉得是印刷工艺参数的设置上,那么印刷工艺参数设置对印刷质量有多大影响呢?下面我们简单来梳理一下SMT印刷工艺参数的设置包括那些环节吧,相信文章前的你一定有自己的看法和理解。

1、图形对准和制作Mark图像

suiranquanzidongyinjidoupeiyoutuxiangshibiexitong,danbixutongguorengongduigongzuotaihuoduimobanzuox、y、θdejingxidiaozheng,shipcbhanpantuxingyumobanloukongtuxingwanquanzhonghe。zhizuomarktuxiangshiyaoshituxiangqingxi、bianyuanguanghua、heibaifenming,ruguotuxingduizhunyouwucha,marktuxiangbuqingxi,jiqishibunengdadaogangyoudeyinshuajingdude。

2、设置前、后印刷极

qian、houyinshuajixianyingshezhizaimobantuxingqian、houzhishaoge20mmchu,yifangzhihangaomanliudaomobandeqishihezhongzhiyinweizhichudekaikouzhong,zaochenggaichuhangaotuxingzhanliandengyinshuaquexian。

3、焊膏的投入量(滚动直径)

看片免费yinzhiguochengzhonghangaozhangshijianzaikongqizhongxishoushuifenhuorongjihuifahuiyingxianghanjiezhiliang。yincihangaodetouruliangbuyaoguoduo,danhangaodetouruliangguoshaoyehuiyingxianghangaodetianchong,tongshipinfantianjiahangaoyehuiyingxiangyinshuaxiaolv。hangaodetouruliangyinggenjuguadaodezhangduqueding。genjupcbzuzhuangmidu(meikuaipcbdehangaoyongliang),gujichuyin100kuaihaishi150kuaitianjiayicihangao,huo1—2hjiayici。

IMG_2912 拷贝.jpg

4、印刷速度

yinshuasuduyibanshezhiwei15~40mm/s,youyuguadaosuduyuhangaodenianduchengfanbiguanxi,guyouzhaijianju、gaomidutuxingshi,suduyaomanyixie。suduguokuai。guadaojingguomobankaikoudeshijiantaiduan,hangaobunengchongfenshenrukaikouzhong,rongyizaochenghangaotuxingbubaomanhuolouyindeyinshuaquexian。

5、刮刀压力

guadaoyaliyibanshezhiwei2~15kg/cm²。

看片免费guadaoyaliyeshiyingxiangyinzhidezhongyaoyinsu。guadaoyalishijishizhidaoxiajiangdeshendu。yalitaixiao,kenenghuifashengliangzhongqingkuang:①youyuguadaoyalixiao,guadaozaiqianjinguochengzhongchanshengdexiangxiadefenliyyexiao,zaochenglouyinhuoxiliangbuzu;②youyuguadaoyalixiao,guadaomeiyoujintiemobanbiaomian,yinzhishiguadaoyupcbzhijiancunzaiweixiaodejianxi,xiangdangyuzengjialeyinshuahoudu。lingwai,yaliguoxiaohuishimobanbiaomianliuyouyicenghangao,rongyizaochengtuxingzhanliandengyinshuaquexian。yinci,lixiangdeguadaoyaliyinggaiqiahaojianghangaocongmobanbiaomianfuganjing。

zaiguadaojiaoduyidingdeqingkuangxia,yinshuasuduheguadaoyalicunzaiyidingdeguanxi,jiangdisuduxiangdangyuzengjiayali,shidangjiangdiyalikeqidaotigaoyinshuasududexiaoguo。

6、印刷间隙

yinshuajianxishizhimobandimianyupcbbiaomianzhijiandejuli。ruguomobanhouduheshi,yibandouyingcaiyonglingjuliyinshua。youshixuyaozengjiayixiehangaoliang,keyishidanglakaiyidianjuli,yibankongzhizai0~0.07mm。danyaozhuyi,guodadeyinshuajianxihuizaochengmobandimianwuran。

7、模板与PCB的分离速度

mobanyupcbdefenlisuduyechengtuomosudu。dangguadaowanchengyigeyinshuaxingchenghou,mobanlikaipcbdeshunshisuduchengweifenlisudu。yingshidangdiaojiefenlisudu,shimobanlikaihangaotuxingshiyouyigeweixiaodetingliuguocheng,ranghangaocongmobandekaikouzhongwanzhengshifangchulai(tuomo),yihuoquzuijiadehangaotuxing。fenlisuduzengdashi,mobanyupcbjianbianchengfuya,hangaoyuhanpandeningjulixiao,shibufenhangaozhanzaimobandimianhekaikoubishang,zaochengshaoyinhezhanlian。fenlisudujianmanshi,pcbyumobanjiandefuyabianxiao,hangaodeningjulida,shihangaohenrongyituolimobankaikoubi,yinshuazhuangtailianghao。mobanfenlipcbdesuduzai2mm/syixiaweiyi。

看片免费weiletigaozhaijianju、gaomidupcbdeyinshuazhiliang。riligongsituichu“jiadudukongzhi”fangfayiyisuiyinshuagongzuotaidexiajiangxingcheng,duixiajiangsudujinxingbiansukongzhi。

8、清洗模式和清洗频率

jingchangqingximobandimianyeshibaozhengyinzhiliangdeyinsu,qingximoshiyouganca、shicahezhenkongxi,yinggenjuyinshuadumidujinxingshezhi。yibanshezhiweiyishiyizhikongxiyigan。youzhaijianju、gaomidutuxingshi,qingxipinlvyaogaoyixie,yibaozhengyinzhiliangweizhun。

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