Kuki tugomba gucomeka kuri PCB?

Kuki tugomba gucomeka kuri PCB?

Kugirango wuzuze ibisabwa byabakiriya, unyuze mu mwobo mu kibaho cyumuzunguruko ugomba gucomeka.Nyuma yimyitozo myinshi, inzira ya aluminiyumu yamashanyarazi isanzwe irahindurwa, hanyuma urushundura rwera rukoreshwa mukurangiza gusudira hamwe no gucomeka umwobo wububiko bwumuzunguruko, bishobora gutuma umusaruro uhagaze neza kandi ubuziranenge bwizewe.

Binyuze mu mwobo bigira uruhare runini mu guhuza imiyoboro.Hamwe niterambere ryinganda za elegitoronike, riteza imbere kandi iterambere rya PCB, kandi rishyira imbere ibisabwa hejuruGuhimba PCB no guteranaikoranabuhanga.Binyuze mu buhanga bwa tekinoroji ya tekinoroji, kandi ibisabwa bikurikira bigomba kubahirizwa:

(1) Umuringa unyuze mu mwobo urahagije, kandi mask yo kugurisha irashobora gucomeka cyangwa ntugire;

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Hamwe niterambere ryibicuruzwa bya elegitoronike mu cyerekezo cy '"urumuri, ruto, rugufi na ruto", PCB nayo itera imbere igana ku bucucike bukabije kandi bigoye.Kubwibyo, umubare munini wa SMT na BGA PCBs wagaragaye, kandi abakiriya bakeneye gucomeka umwobo mugihe cyo gushiraho ibice, bifite ibikorwa bitanu:

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(2) Irinde ibisigisigi bya flux unyuze mu mwobo;

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(4) Irinde uwagurishije hejuru gutembera mu mwobo, no gutera kugurisha ibinyoma no kugira ingaruka kumusozi;

(5) kubuza isaro ryagurishijwe gusohoka mugihe cyo kugurisha umuraba, kandi bigatera uruziga rugufi.

Kumenyekanisha tekinoroji ya tekinoroji yo gukoresha umwobo

KuriInteko ya SMT PCBikibaho, cyane cyane kwishyiriraho BGA na IC, unyuze mu mwobo ugomba kuba uringaniye, convex na conave wongeyeho cyangwa ukuyemo 1mil, kandi ntihakagombye kubaho amabati atukura kumpera yumwobo;kugirango wuzuze ibyo umukiriya asabwa, unyuze mu mwobo wacometse mu mwobo urashobora gusobanurwa nkibintu byinshi, birebire bigenda neza, kugenzura inzira igoye, hakunze kubaho ibibazo nko kugabanuka kwamavuta mugihe cyo kuringaniza ikirere gishyushye hamwe nikizamini cyo kugurisha amavuta yicyatsi hamwe no guturika kwa peteroli nyuma gukiza.Dukurikije imiterere nyayo yumusaruro, tuvunaguye muri make inzira zinyuranye zacometse kuri PCB, kandi tugereranya no gusobanura mubikorwa hamwe nibyiza nibibi:

Icyitonderwa: ihame ryakazi ryo kuringaniza ikirere gishyushye ni ugukoresha umwuka ushyushye kugirango ukureho uwagurishije birenze hejuru yikibaho cyumuzunguruko cyacapwe no mu mwobo, kandi uwagurishije asigaye apfundikirwa neza kuri padi, adahagarika imirongo yabagurisha hamwe nububiko bwo gupakira hejuru. , nimwe muburyo bwo kuvura hejuru yubuyobozi bwanditse.

1. Gucomeka umwobo nyuma yo gushyushya umwuka ushushe: gusudira hejuru yisahani gusudira → HAL → gucomeka umwobo → gukiza.Inzira idacomeka yemewe kugirango ikorwe.Nyuma yo gushyushya ikirere gishyushye, ecran ya aluminiyumu cyangwa ecran yo guhagarika wino ikoreshwa kugirango urangize umwobo wacometse mubihome byose bisabwa nabakiriya.Irangi ry'umwobo rishobora kuba wino yerekana amafoto cyangwa wino ya thermosetting, mugihe cyo kwemeza ibara rimwe rya firime itose, wino wacometse nibyiza gukoresha wino imwe nki kibaho.Iyi nzira irashobora kwemeza ko unyuze mu mwobo utazamanura amavuta nyuma yubushyuhe bwikirere, ariko biroroshye gutera wino wacometse wino yanduza hejuru yisahani kandi itaringaniye.Biroroshye kubakiriya gutera kugurisha ibinyoma mugihe cyo gushiraho (cyane cyane BGA).Abakiriya benshi rero ntibemera ubu buryo.

2. Shira umwobo mbere yo gushyushya umwuka ushushe: 2.1 gucomeka umwobo hamwe nurupapuro rwa aluminiyumu, gukomera, gusya isahani, hanyuma wohereze ibishushanyo.Ubu buryo bukoresha imashini ya CNC yo gucukura kugirango isukure urupapuro rwa aluminiyumu rugomba gucomeka umwobo, gukora plaque ya ecran, gucomeka umwobo, kwemeza ko unyuze mu mwobo wuzuye umwobo wuzuye, wino wacometse wino, wino ya thermosetting nayo irashobora gukoreshwa.Ibiranga bigomba kuba bikomeye, impinduka ntoya yo kugabanuka, hamwe no gufatana neza nurukuta.Uburyo bwa tekinoloji nuburyo bukurikira: kwitegura → gucomeka umwobo → gusya isahani → kwimura icyitegererezo → gutobora → isahani yo kurwanya isahani.Ubu buryo bushobora kwemeza ko unyuze mu mwobo wacometse neza, kandi kuringaniza ikirere gishyushye ntibizagira ibibazo byiza nko guturika kwa peteroli hamwe no guta amavuta kumwobo.Nyamara, iyi nzira isaba ubunini bwumuringa inshuro imwe kugirango uburebure bwumuringa bwurukuta rwumwobo bujuje ubuziranenge bwabakiriya.Kubwibyo, ifite ibisabwa cyane kugirango umuringa ushyire ku isahani yose hamwe n’imikorere ya gride ya plaque, kugirango harebwe niba ibisigazwa hejuru yumuringa byavanyweho burundu, kandi hejuru yumuringa hasukuye kandi ntibihumanye.Inganda nyinshi za PCB ntizifite inshuro imwe yogukora umuringa, kandi imikorere yibikoresho ntishobora kuzuza ibisabwa, kubwibyo rero ntibikunze gukoreshwa mu nganda za PCB.

(Ububiko bwa silike yambaye ubusa) (firime ya firime ihagarara)

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