Umwobo uyobora Via umwobo uzwi kandi nko mu mwobo. Kugirango wuzuze ibyifuzo byabakiriya, ikibaho cyumuzunguruko ukoresheje umwobo kigomba gucomeka. Nyuma yimyitozo myinshi, inzira gakondo yo gucomeka ya aluminiyumu irahindurwa, hanyuma ikibaho cyumuzunguruko hejuru yumugurisha mask hamwe no gucomeka birangizwa na meshi yera. umwobo. Umusaruro uhamye hamwe nubwiza bwizewe.

Binyuze mu mwobo bigira uruhare rwo guhuza no kuyobora imirongo. Iterambere ryinganda za elegitoronike naryo riteza imbere iterambere rya PCB, kandi rikanashyira imbere ibisabwa hejuru murwego rwo gukora ibicuruzwa byacapwe hamwe na tekinoroji yo hejuru. Hifashishijwe ikoranabuhanga ryo gucomeka umwobo ryabayeho, kandi rigomba kuba ryujuje ibi bikurikira:

(1) Hariho umuringa unyuze mu mwobo, kandi mask yo kugurisha irashobora gucomeka cyangwa kudacomeka;
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Hamwe niterambere ryibicuruzwa bya elegitoronike mu cyerekezo cy "urumuri, ruto, rugufi na ruto", PCB nazo zateye imbere kuburyo bwinshi kandi bigoye. Kubwibyo, umubare munini wa SMT na BGA PCBs wagaragaye, kandi abakiriya bakeneye gucomeka mugihe cyo gushiraho ibice, cyane cyane harimo imirimo itanu:

. cyane cyane iyo dushyize umwobo kuri padi ya BGA, tugomba kubanza gukora umwobo hanyuma tugasiga zahabu kugirango byoroherezwe kugurisha BGA.
(2) Irinde ibisigisigi bya flux unyuze mu mwobo;
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(5) Irinde imipira yamabati gusohoka mugihe cyo kugurisha imiraba, bigatera imiyoboro migufi.

Kumenyekanisha inzira yo gucomeka

Ku mbaho ​​zo hejuru, cyane cyane gushiraho BGA na IC, unyuze mu mwobo ugomba kuba uringaniye, convex na conve wongeyeho cyangwa ukuyemo 1mil, kandi ntihakagombye kubaho amabati atukura ku nkombe zinyuze mu mwobo; unyuze mu mwobo uhisha umupira w'amabati, kugirango ugere kubakiriya Ukurikije ibisabwa, inzira yo gucomeka umwobo irashobora gusobanurwa nkuburyo butandukanye, inzira ni ndende cyane, inzira iragoye kuyigenzura, kandi amavuta akunze kugabanuka mugihe cya gushyushya ikirere gishyushye hamwe nigeragezwa ryamavuta yo kugurisha; ibibazo nko guturika amavuta nyuma yo gukira. Ukurikije imiterere nyayo yumusaruro, inzira zitandukanye zo gucomeka za PCB zavunaguye, kandi kugereranya no gusobanura bimwe mubikorwa hamwe nibyiza nibibi:

Icyitonderwa: Ihame ryakazi ryo kuringaniza ikirere gishyushye ni ugukoresha umwuka ushyushye kugirango ukureho uwagurishije birenze hejuru nu mwobo wibibaho byacapwe. Ugurisha asigaye yometseho kashe ku makariso, imirongo igurisha idashobora kwihanganira hamwe no gupakira ibintu, ubwo ni bwo buryo bwo kuvura ubuso bwibibaho byacapwe.

1. Gucomeka nyuma yo gushyushya umwuka ushushe

Inzira igenda ni: ikibaho cyo kugurisha mask → HAL → gucomeka umwobo → gukiza. Inzira idacomeka yemewe kugirango ikorwe. Nyuma yumwuka ushyushye uringaniye, ecran ya aluminiyumu cyangwa ecran ya wino ikoreshwa kugirango urangize unyuze mu mwobo usabwa n'umukiriya kubihome byose. Irangi ryo gucomeka rishobora kuba wino yunvikana cyangwa wino ya thermosetting. Ukurikije ko ibara rya firime itose ihoraho, wino yo gucomeka nibyiza gukoresha wino imwe nubuso bwibibaho. Iyi nzira irashobora kwemeza ko kunyura mu mwobo bitazabura amavuta nyuma yumuyaga ushyushye uringaniye, ariko biroroshye gutera wino wacometse wino yanduza hejuru yubuyobozi kandi butaringaniye. Abakiriya bakunda kugurisha ibinyoma (cyane cyane muri BGA) mugihe cyo kuzamuka. Abakiriya benshi rero ntibemera ubu buryo.

2. Ikirere gishyushye kuringaniza no gucomeka tekinoroji

2.1 Koresha urupapuro rwa aluminiyumu kugirango ucomeke umwobo, ushimangire, kandi usukure ikibaho kugirango wohereze ibishushanyo

Iyi nzira ikoresha imashini igenzura imashini igenzura gucukura urupapuro rwa aluminiyumu rugomba gucomeka kugirango rukore ecran, hanyuma ucomeke umwobo kugirango urebe ko unyuze mu mwobo wuzuye. Irangi ry'umwobo rishobora kandi gukoreshwa hamwe na wino ya termosetting, kandi ibiyiranga bigomba kuba bikomeye. , Kugabanuka kw'ibisigarira ni bito, kandi imbaraga zo guhuza urukuta rw'umwobo ni nziza. Inzira igenda ni: mbere yo kuvura → gucomeka umwobo → gusya isahani transfer uburyo bwo kwimura → gutobora → kugurisha ibicuruzwa hejuru

Ubu buryo burashobora kwemeza ko umwobo wacometse mu mwobo uringaniye, kandi ntakibazo kizaba cyiza nko guturika kwa peteroli no gutonyanga amavuta kumpera yumwobo mugihe uringaniza numwuka ushushe. Nyamara, iyi nzira isaba ubunini bwumuringa inshuro imwe kugirango uburebure bwumuringa bwurukuta rwumwobo bujuje ubuziranenge bwabakiriya. Kubwibyo, ibisabwa kugirango umuringa ushyirwe ku isahani yose ni muremure cyane, kandi imikorere yimashini isya isahani nayo ni ndende cyane, kugirango ibisigarira hejuru yumuringa bikurweho burundu, kandi hejuru yumuringa hasukuye kandi ntabwo byanduye. . Inganda nyinshi za PCB ntizifite inshuro imwe yumubyimba wumuringa, kandi imikorere yibikoresho ntabwo yujuje ibisabwa, bigatuma bidakoreshwa cyane muruganda rwa PCB.

1. Gucomeka inzira nyuma yo gushyushya ikirere

Inzira igenda ni: ikibaho cyo kugurisha mask → HAL → gucomeka umwobo → gukiza. Inzira idacomeka yemewe kugirango ikorwe. Nyuma yumwuka ushyushye uringaniye, ecran ya aluminiyumu cyangwa ecran ya wino ikoreshwa kugirango urangize unyuze mu mwobo usabwa n'umukiriya kubihome byose. Irangi ryo gucomeka rishobora kuba wino yunvikana cyangwa wino ya thermosetting. Ukurikije ko ibara rya firime itose ihoraho, wino yo gucomeka nibyiza gukoresha wino imwe nubuso bwibibaho. Iyi nzira irashobora kwemeza ko kunyura mu mwobo bitazabura amavuta nyuma yumuyaga ushyushye uringaniye, ariko biroroshye gutera wino wacometse wino yanduza hejuru yubuyobozi kandi butaringaniye. Abakiriya bakunda kugurisha ibinyoma (cyane cyane muri BGA) mugihe cyo kuzamuka. Abakiriya benshi rero ntibemera ubu buryo.

2. Ikirere gishyushye kuringaniza no gucomeka tekinoroji

2.1 Koresha urupapuro rwa aluminiyumu kugirango ucomeke umwobo, ushimangire, kandi usukure ikibaho kugirango wohereze ibishushanyo

Iyi nzira ikoresha imashini igenzura imashini igenzura gucukura urupapuro rwa aluminiyumu rugomba gucomeka kugirango rukore ecran, hanyuma ucomeke umwobo kugirango urebe ko unyuze mu mwobo wuzuye. Irangi ry'umwobo rishobora kandi gukoreshwa hamwe na wino ya thermosetting, kandi ibiyiranga bigomba kuba bikomeye., Kugabanuka kwa resin ni nto, kandi imbaraga zo guhuza urukuta rw'umwobo ni nziza. Inzira igenda ni: mbere yo kuvura → gucomeka umwobo → gusya isahani transfer uburyo bwo kwimura → gutobora → masike yo kugurisha hejuru

Ubu buryo burashobora kwemeza ko umwobo wacometse mu mwobo uringaniye, kandi ntakibazo kizaba cyiza nko guturika kwa peteroli no gutonyanga amavuta kumpera yumwobo mugihe uringaniza numwuka ushushe. Nyamara, iyi nzira isaba ubunini bwumuringa inshuro imwe kugirango uburebure bwumuringa bwurukuta rwumwobo bujuje ubuziranenge bwabakiriya. Kubwibyo, ibisabwa kugirango umuringa ushyirwe ku isahani yose ni muremure cyane, kandi imikorere yimashini isya isahani nayo ni ndende cyane, kugirango ibisigarira hejuru yumuringa bikurweho burundu, kandi hejuru yumuringa hasukuye kandi ntabwo byanduye. . Inganda nyinshi za PCB ntizifite inshuro imwe yumubyimba wumuringa, kandi imikorere yibikoresho ntabwo yujuje ibisabwa, bigatuma bidakoreshwa cyane muruganda rwa PCB.

2.2 Nyuma yo gucomeka umwobo hamwe nurupapuro rwa aluminiyumu, shyira ahagaragara-shyira ahagaragara ikibaho cyo kugurisha mask

Ubu buryo bukoresha imashini ya CNC yo gucukura kugirango isohore urupapuro rwa aluminiyumu igomba gucomeka kugirango ikore ecran, iyishyire kumashini icapura ecran kugirango icomeke umwobo, hanyuma uyihagarike muminota itarenze 30 nyuma yo kurangiza gucomeka, na koresha ecran ya 36T kugirango ugaragaze neza hejuru yubuyobozi. Inzira igenda ni: kwiyitirira-gucomeka umwobo-silike ya ecran-mbere yo guteka-kwerekana-iterambere-gukiza

Iyi nzira irashobora kwemeza ko unyuze mu mwobo utwikiriwe neza na peteroli, umwobo ucomeka neza, kandi ibara rya firime itose. Nyuma yumuyaga ushyushye, urashobora kwemeza ko unyuze mu mwobo utabitswe kandi isaro y amabati ntihishe mu mwobo, ariko biroroshye gutera wino mu mwobo nyuma yo gukiza Amapadiri atera kwangirika nabi; nyuma yumuyaga ushyushye uringaniye, impande za vias zibyimba hamwe namavuta. Biragoye kugenzura umusaruro hamwe nuburyo bwuburyo bukoreshwa, kandi abashinzwe gutunganya ibintu bagomba gukoresha inzira zidasanzwe hamwe nibipimo kugirango barebe ubwiza bwibyobo.

2.2 Nyuma yo gucomeka umwobo hamwe nurupapuro rwa aluminiyumu, shyira ahagaragara-shyira ahagaragara ikibaho cyo kugurisha mask

Ubu buryo bukoresha imashini ya CNC yo gucukura kugirango isohore urupapuro rwa aluminiyumu igomba gucomeka kugirango ikore ecran, iyishyire kumashini icapura ecran kugirango icomeke umwobo, hanyuma uyihagarike muminota itarenze 30 nyuma yo kurangiza gucomeka, na koresha ecran ya 36T kugirango ugaragaze neza hejuru yubuyobozi. Inzira igenda ni: kwiyitirira-gucomeka umwobo-silike ya ecran-mbere yo guteka-kwerekana-iterambere-gukiza

Iyi nzira irashobora kwemeza ko unyuze mu mwobo utwikiriwe neza na peteroli, umwobo ucomeka neza, kandi ibara rya firime itose. Nyuma yumuyaga ushyushye, urashobora kwemeza ko unyuze mu mwobo udatoboye kandi isaro y amabati ntihishe mu mwobo, ariko biroroshye gutera wino mu mwobo nyuma yo gukiza Amapasi atera ubushobozi buke bwo kugurisha; nyuma yumuyaga ushyushye uringaniye, impande za vias zibyimba hamwe namavuta. Biragoye kugenzura umusaruro hamwe nuburyo bwuburyo bukoreshwa, kandi abashinzwe gutunganya ibintu bagomba gukoresha inzira zidasanzwe hamwe nibipimo kugirango barebe ubwiza bwibyobo.