免清洗助焊劑宜采用什麼樣的焊錫工藝 - 綠誌島—領先綠色科技
本文來自專業焊錫廠綠誌島焊錫金屬有限公司 2015-9-28
使(shi)用(yong)免(mian)清(qing)洗(xi)助(zhu)焊(han)劑(ji),其(qi)焊(han)錫(xi)工(gong)藝(yi)雖(sui)與(yu)普(pu)通(tong)助(zhu)焊(han)劑(ji)沒(mei)有(you)太(tai)大(da)差(cha)異(yi),但(dan)是(shi)焊(han)錫(xi)的(de)方(fang)式(shi)方(fang)法(fa)卻(que)要(yao)注(zhu)意(yi)需(xu)滿(man)足(zu)免(mian)清(qing)洗(xi)技(ji)術(shu)的(de)要(yao)求(qiu)。免(mian)清(qing)洗(xi)助(zhu)焊(han)劑(ji)在(zai)焊(han)接(jie)時(shi),是(shi)怎(zen)樣(yang)的(de)情(qing)況(kuang)呢(ne),一(yi)起(qi)來(lai)了(le)解(jie)一(yi)下(xia)吧(ba)。
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第(di)二(er)個(ge)原(yuan)因(yin)是(shi)因(yin)為(wei)免(mian)清(qing)洗(xi)助(zhu)焊(han)劑(ji)的(de)固(gu)態(tai)含(han)量(liang)非(fei)常(chang)低(di),不(bu)利(li)於(yu)發(fa)泡(pao)。第(di)三(san)是(shi)塗(tu)敷(fu)時(shi)不(bu)能(neng)控(kong)製(zhi)助(zhu)焊(han)劑(ji)的(de)塗(tu)敷(fu)量(liang),導(dao)致(zhi)塗(tu)敷(fu)不(bu)均(jun)與(yu),過(guo)量(liang)的(de)助(zhu)焊(han)劑(ji)殘(can)留(liu)在(zai)PCB板麵的邊緣處,根本無法達到理想的免清洗效果。
所(suo)以(yi)相(xiang)比(bi)之(zhi)下(xia),噴(pen)霧(wu)法(fa)是(shi)較(jiao)為(wei)適(shi)用(yong)於(yu)免(mian)清(qing)洗(xi)助(zhu)焊(han)劑(ji)的(de)塗(tu)敷(fu)的(de)。將(jiang)助(zhu)焊(han)劑(ji)放(fang)置(zhi)在(zai)一(yi)個(ge)密(mi)封(feng)的(de)加(jia)壓(ya)容(rong)器(qi)中(zhong),通(tong)過(guo)噴(pen)口(kou)噴(pen)射(she)出(chu)霧(wu)狀(zhuang)的(de)助(zhu)焊(han)劑(ji),塗(tu)敷(fu)在(zai)PCB板麵上,並且噴射器的噴射量、噴(pen)射(she)寬(kuan)度(du)以(yi)及(ji)霧(wu)化(hua)程(cheng)度(du)都(dou)是(shi)可(ke)以(yi)進(jin)行(xing)調(tiao)節(jie)的(de),可(ke)以(yi)精(jing)準(zhun)的(de)控(kong)製(zhi)助(zhu)焊(han)劑(ji)的(de)量(liang)。使(shi)用(yong)噴(pen)霧(wu)法(fa),塗(tu)敷(fu)在(zai)板(ban)麵(mian)上(shang)的(de)助(zhu)焊(han)劑(ji)很(hen)均(jun)勻(yun),這(zhe)就(jiu)保(bao)證(zheng)了(le)焊(han)接(jie)後(hou)PCB板麵能滿足免清洗工藝的要求。
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