熱re風feng整zheng平ping又you稱cheng噴pen錫xi,它ta的de基ji本ben原yuan理li是shi利li用yong熱re風feng將jiang印yin製zhi電dian路lu板ban表biao麵mian及ji孔kong內nei多duo餘yu焊han料liao去qu掉diao,剩sheng下xia焊han料liao均jun勻yun覆fu在zai焊han盤pan及ji無wu阻zu焊han料liao線xian條tiao及ji表biao麵mian封feng裝zhuang點dian上shang。
熱風整平的工藝較為簡單,主要是:放板(貼鍍金插頭保護膠帶)→熱風整平前處理→熱風整平→熱風整平後清洗→檢查。熱風整平的工藝看似簡單,但是,若想熱風整平出優良合格的印製電路板還有很多的工藝參數必須掌握,例如:hanliaowendu,kongqidaoqiliuwendu,fengdaoyali,jinhanshijian,tishengsududengdeng。zhexietiaojiandouyoushedingzhi,dangongzuoshiyouyaogenjuyinzhidianlubandewaizaitiaojianjijiagongdandeyaoqiuxiangbianhua,liru:banhou,banchangbutongdedanmian,shuangmian,duocengban。tamensuocaiyongdetiaojianshiyouchayide,zhiyoushuxizhangwogezhonggongyicanshu,genjuyinzhidianlubandebutongleixing,butongyaoqiu,naixin,xizhi,helidetiaozhengjiqi,cainengrefengzhengpingchuhegedeyinzhidianluban。zairefengzhengpingzhongjingchanghuichuxianyixiayixiechangjiandewentigenjugongzuojingyantichuleyixiejiejuefangfajingongcankao。
一.熱re風feng整zheng平ping排pai風feng口kou滴di殘can餘yu液ye,這zhe種zhong現xian象xiang是shi從cong熱re風feng整zheng平ping的de排pai風feng口kou向xiang下xia滴di流liu黃huang色se液ye體ti,這zhe種zhong液ye體ti主zhu要yao是shi整zheng平ping時shi被bei排pai風feng口kou吸xi入ru的de助zhu焊han劑ji。時shi間jian久jiu了le積ji於yu排pai風feng管guan道dao中zhong,沒mei法fa排pai出chu,便bian順shun排pai風feng口kou四si周zhou滴di落luo,滴di落luo在zai什shen麼me地di方fang都dou有you,像xiang熱re風feng管guan道dao,風feng刀dao口kou處chu,風feng刀dao口kou上shang保bao護hu蓋gai滴di落luo最zui多duo,有you時shi,在zai工gong作zuo中zhong也ye會hui滴di於yu操cao作zuo員yuan的de頭tou上shang,工gong作zuo服fu上shang,在zai下xia班ban關guan閉bi排pai風feng後hou滴di下xia的de殘can餘yu液ye最zui多duo,例li如ru熱re熔rong,這zhe些xie液ye體ti覆fu於yu機ji器qi上shang,時shi間jian長chang了le對dui設she備bei的de殘can蝕shi很hen大da。可ke參can考kao脫tuo排pai油you煙yan機ji的de構gou造zao,在zai排pai風feng口kou上shang做zuo一yi個ge漏lou鬥dou型xing鐵tie絲si網wang引yin流liu殘can餘yu液ye,可ke減jian小xiao或huo解jie決jue這zhe種zhong情qing況kuang,可ke以yi在zai漏lou鬥dou網wang下xia端duan引yin入ru地di溝gou或huo放fang入ru廢fei液ye槽cao,這zhe樣yang做zuo好hao後hou,殘can餘yu液ye在zai從cong排pai風feng口kou向xiang下xia流liu動dong的de過guo程cheng當dang中zhong,流liu經jing鐵tie絲si時shi,會hui有you一yi大da部bu分fen殘can餘yu液ye沿yan鐵tie絲si流liu下xia來lai。而er且qie多duo做zuo幾ji個ge預yu留liu如ru腐fu蝕shi壞huai了le可ke更geng換huan。
二.refengzhengpingshidaideshoutao,zairefengzhengpingshitongchangshicaiyongfanbushoutao,jiangyifushoutaotaorulingyifushoutaodaizaishoushangjinxinggongzuo,shijianshaochangzhuhanjibianjinrushoutaolibianqule,zheshishoutaodegerenenglijiudadajianxiaole,erqie,zhuhanjijindaoshoushangduishouyeyouyidingdeshanghai.這(zhe)種(zhong)浸(jin)入(ru)了(le)助(zhu)焊(han)劑(ji)的(de)手(shou)套(tao)洗(xi)滌(di)後(hou)還(hai)能(neng)再(zai)用(yong)一(yi)次(ci),但(dan)效(xiao)果(guo)不(bu)好(hao),由(you)於(yu)帆(fan)布(bu)變(bian)軟(ruan),助(zhu)焊(han)劑(ji)浸(jin)入(ru)的(de)速(su)度(du)非(fei)常(chang)快(kuai)且(qie)量(liang)大(da),建(jian)議(yi)采(cai)用(yong)浸(jin)塑(su)手(shou)套(tao)裏(li)麵(mian)在(zai)加(jia)一(yi)個(ge)細(xi)帆(fan)布(bu)手(shou)套(tao),關(guan)鍵(jian)的(de)問(wen)題(ti)是(shi):這種橡膠手套的大小要合適,隔熱要好,而且柔軟度好。
三.撓nao性xing板ban及ji銑xi完wan外wai形xing返fan工gong的de印yin製zhi板ban如ru何he熱re風feng整zheng平ping,撓nao性xing板ban由you於yu板ban材cai柔rou軟ruan,在zai熱re風feng整zheng平ping時shi極ji易yi產chan生sheng問wen題ti,需xu要yao格ge外wai謹jin慎shen,熱re風feng整zheng平ping前qian應ying銑xi好hao與yu撓nao性xing板ban邊bian緣yuan相xiang吻wen合he的de邊bian框kuang,然ran後hou在zai邊bian框kuang與yu撓nao性xing板ban邊bian緣yuan處chu各ge打da幾ji個ge相xiang對dui的de孔kong,一yi般ban在zai邊bian框kuang每mei邊bian上shang各ge打da三san個ge孔kong即ji可ke,邊bian寬kuan,邊bian長chang的de撓nao性xing板ban可ke以yi多duo打da幾ji個ge孔kong。
四.在導軌間卡板的原因:
1.導軌與板子的距離過近或距離過遠,調節導軌便可解決。
2.掛板孔不在印製板邊緣正中心,更正掛板孔位置可解決。
3.印製板邊角不規整,加邊框可以解決。
4.印製板返工時邊緣掛錫過厚,用手將印製板插入焊料槽中然後取出。
5.導軌出錫孔被鉛錫阻塞過多造成卡板,可用熱焊料熔去,可用硬物頂出。
6.熱風整平後的印製板被掛釘與導軌?頂部 卡在中間造成變形,及時更換掛臂減震器。
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