Kukanganisa Kwemakomba Makomba PaPCB

Pini Makomba & Bvudzisa Makomba paPrinted Circuit Board

Makomba epini kana maburi anoputika chinhu chimwe chete uye chinokonzereswa neyakadhindwa bhodhi kubuda mukati panguva yekutengesa.Pini uye kuvhuvhuta gomba kuumbwa panguva yeave soldering kunowanzo kuenderana nekukora kwemhangura plating.Hunyoro huri mubhodhi hunobuda kuburikidza nemhangura yakaonda yakapfava kana kuti mavhodhi muplating.Kunyura mugomba kunofanirwa kunge kuri kuita 25um kumisa mwando mubhodhi kushanduka kuita mhute yemvura uye kufefetera nemumadziro emhangura panguva yekunyungudika kwemasaisai.

Izwi rekuti pin or blow hole rinonyanya kushandiswa kutaridza kukura kwegomba, pini kuita diki.Saizi inongoenderana nehuwandu hwemhute yemvura iri kubuda uye nzvimbo iyo solder inoomesa.

Mufananidzo 1: Blow Hole

Nzira chete yekubvisa dambudziko kuvandudza kunaka kwebhodhi nehushoma hwe25um yemhangura yekuputira mugomba.Kubika kunowanzoshandiswa kubvisa matambudziko ekuputira nekuomesa bhodhi.Kubika bhodhi kunotora mvura kubva mubhodhi, asi haigadziri chinokonzera dambudziko.

Mufananidzo 2: Pin Hole

Nondestructive Evaluation yePCB Holes

Muedzo unoshandiswa kuongorora akadhindwa edunhu mabhodhi ane akaputirwa nemaburi ekubuda kunze.Inoratidza kuitika kwekutetepa kwakapetwa kana zvivharo zviripo kuburikidza nemaburi ekubatanidza.Inogona kushandiswa paresisiti yezvinhu, panguva yekugadzirwa kana pamagungano ekupedzisira kuona chikonzero chevoids mune solder fillets.Zvichipa kuti kutarisirwa kunotorwa panguva yekuedza mabhodhi anogona kushandiswa mukugadzirwa mushure mekuedzwa pasina kukanganisa kutaridzika kwekuona kana kuvimbika kwechigadzirwa chekupedzisira.

Test Equipment

• Sample akadhindwa edunhu mabhodhi kuti aongororwe
• Oiri yeCanada Bolson kana imwe nzira yakakodzera iyo inopenya yakajeka kuti iongororwe uye inogona kubviswa nyore nyore mushure mekuyedzwa
• Hypodermic syringe yekushandisa mafuta mugomba rega rega
• Blotting bepa rekubvisa mafuta akawandisa
• Maikorosikopu ine chiedza chepamusoro nechepazasi.Neimwe nzira, yakakodzera yekuwedzera rubatsiro rwepakati pe5 kusvika 25x magnification uye bhokisi rakareruka.
• Soldering iron ine tembiricha kutonga

Test Method

1. Sample board kana chikamu chebhodhi chinosarudzwa kuti chiongororwe.Uchishandisa sirinji yehypodermic, zadza rimwe nerimwe remaburi ekuongororwa nemafuta akajeka.Kuti uongorore zvinobudirira, zvakakosha kuti mafuta aite concave meniscus pamusoro pegomba.Iyo concave fomu inobvumira maonero ekuona kweakazara akaputirwa kuburikidza negomba.Nzira iri nyore yekugadzira concave meniscus pamusoro uye kubvisa mafuta akawandisa ndeye kushandisa bepa rekudzima.Muchiitiko chekupinda kwemhepo chero kupi zvako mugomba, mamwe mafuta anoshandiswa kusvikira maonero akajeka emukati wakakwana anowanikwa.
2. Bhodhi remuenzaniso rakaiswa pamusoro pechiedza chechiedza;izvi zvinobvumira kuvhenekera kweplating kuburikidza negomba.Bhokisi rechiedza rakapfava kana chikuva chepasi chakavhenekerwa pamaikorosikopu chinogona kupa chiedza chakakodzera.Iyo yakakodzera yekuona yekuona yekubatsira ichadikanwa kuti uongorore gomba panguva yekuyedzwa.Kuongororwa kwakawanda, 5X magnification inobvumira kutarisa kwebubble kuumbwa;kuti uwedzere kuongororwa kweiyo kuburikidza negomba, 25X magnification inofanira kushandiswa.
3. Zvadaro, refer the solder iri plated kuburikidza nemakomba.Izvi zvakare munharaunda inopisa nzvimbo yakatenderedza yebhodhi.Nzira iri nyore yekuita izvi ndeyekuisa simbi yakatsetseka yakanyungudutswa panzvimbo yepadhi pabhodhi kana kuti track inobatanidza kunzvimbo yepadhi.Iyo tembiricha yepipi inogona kusiana, asi 500 ° F kazhinji inogutsa.Iyo gomba inofanira kuongororwa panguva imwe chete panguva yekushandiswa kwesimbi yesimbi.
4. Masekondi mushure mekuzara kwakazara kwetin lead plating mukati megomba, mabhuru anozoonekwa achibuda kubva kune chero nzvimbo yakatetepa kana ine porous mukati kuburikidza neplating.Kubuda kunze kunoonekwa serukova rusingaperi rwemabhubhu, anoratidza maburi epini, kuputika, voids kana kutetepa kwakadzika.Kazhinji kana kuburitsa mweya kukaonekwa, kunoenderera kwenguva yakati rebei;muzviitiko zvakawanda zvinoramba zvichienderera kusvikira nzvimbo yekupisa yabviswa.Izvi zvinogona kuenderera kwemaminitsi 1-2;muzviitiko izvi kupisa kunogona kukonzera discoloration yezvinhu zvebhodhi.Kazhinji, kuongorora kunogona kuitwa mukati memasekonzi makumi matatu ekushandiswa kwekupisa kudunhu.
5. Mushure mekuedzwa, bhodhi inogona kucheneswa mune yakakodzera solvent kubvisa mafuta anoshandiswa panguva yekuedzwa.Muedzo unobvumira kuongorora nekukurumidza uye kunoshanda kwechiso chemhangura kana tin / lead plating.Muedzo unogona kushandiswa kuburikidza nemakomba asina tin/lead nzvimbo;mune zvimwe zviitiko zvehumwe organic coatings, chero kubvongodza nekuda kwekupfeka kunopera mukati memasekondi mashoma.Muedzo unopawo mukana wekurekodha zvabuda zvese pavhidhiyo kana firimu rehurukuro yemberi.

Chinyorwa nemifananidzo kubva painternet, kana paine kukanganisa pls tanga watibata kuti tibvise.
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