Kutentha ndi njira zinachitikira BGA kuwotcherera

Choyamba, ngati guluu likugwiritsidwa ntchito pamakona anayi a chip ndi kuzungulira chip, choyamba sinthani kutentha kwa mfuti yamoto yotentha kufika madigiri 330 ndi mphamvu ya mphepo kukhala yochepa. Gwirani mfutiyo m’dzanja lanu lamanzere ndi zomangira m’dzanja lanu lamanja. Mukuwomba, mutha kutola guluu ndi tweezers. Guluu woyera ndi guluu wofiira akhoza kuchotsedwa mu nthawi yochepa. Samalani nthawi yomwe mukuchita komanso nthawi yomwe mukuyiza
Sizingakhale motalika kwambiri. Kutentha kwa kuluma ndikokwera. Mutha kuchita pafupipafupi. Chitani izo kwa kanthawi, imani kwa kanthawi. Kuphatikiza apo, potola ndi tweezers, muyenera kusamala. Guluu sufewetsedwa ndipo sungathe kutola ndi mphamvu. Muyeneranso kusamala kuti musakanda board board. Ngati ndi kotheka, mutha kugwiritsanso ntchito guluu kufewetsa guluu, koma ndikuganiza kuti mukugwiritsabe ntchito mfuti yotentha ya BGA kuwotcherera posachedwapa.

Tiyeni tikambirane masitepe onse kupanga BGA kukonza benchi. Ine kwenikweni bwino kupanga BGA kukonza benchi motere, ndi dontho mfundo kawirikawiri zimachitika. Tiyeni titengerenso khadi lojambula mwachitsanzo.
Tiyeni tikambirane mayendedwe anga mu BGA:
1. Choyamba, onjezani kuchuluka koyenera kwa BGA Solder Paste yapamwamba mozungulira khadi lojambula, ikani kutentha kwa mfuti yamoto yotentha ku madigiri a 200, kuchepetsa mphamvu ya mphepo, kuwombera phala la solder, ndikuwomba phala la solder pang’onopang’ono. Chip cha graphics card. Pambuyo pa phala la solder mozungulira chip khadi chowomberedwa pansi pa chip, sinthani mphamvu yamphepo yamfuti yotentha mpaka pamlingo waukulu ndikuyang’anizana ndi chip kachiwiri.
Cholinga cha izi ndikupangitsa kuti solder ikhale yozama kwambiri mu chip.

Kutentha ndi njira zinachitikira BGA kuwotcherera
2. Pambuyo pa masitepe omwe ali pamwambawa atsirizidwa, dikirani kuti chip chizizizira kwambiri (chofunika kwambiri), ndiyeno pukutani phala lowonjezera la solder ndi kuzungulira chip khadi chojambula ndi thonje la mowa. Onetsetsani kuti mwapukuta.
3. Kenako, mapepala a malata a platinamu amaikidwa mozungulira chip. Pofuna kuonetsetsa kuti kutentha kwambiri pa kuwotcherera sikudzawononga capacitor, chubu kumunda ndi triode padziko zithunzi khadi, ndi galasi oscillator, makamaka kanema kukumbukira kuzungulira zithunzi khadi, malata platinamu pepala ayenera phala kuti 15 zigawo pa nthawi. Beijing. Pepala langa la platinamu ndi lopyapyala, ndipo sindikudziwa momwe kutenthetsa kumayendera bwino pamene zigawo 15 za pepala la platinamu zimayikidwa,
Koma ziyenera kugwira ntchito. Osachepera nthawi iliyonse pochita BGA, panalibe vuto ndi kukumbukira kanema pafupi ndi khadi la zithunzi ndi North Bridge, ndipo sizinali zowotcherera ndikuphulika.

Kutentha ndi njira zinachitikira BGA kuwotcherera
Ngati BGA kukonza nsanja kwa zithunzi khadi akadali osayatsa pambuyo anamaliza, ine ndingakhale otsimikiza kuti si anamaliza. Sindikayika ngati kukumbukira kanema wotsatira kapena North Bridge kwawonongeka. Kumbuyo kwa chip makadi azithunzi, pepala la platinamu liyeneranso kumata. Nthawi zambiri ndimakakamira pansanjika yachisanu. Ndipo derali ndi lalikulu pang’ono. Izi ndi kupewa pamene kupanga BGA kukonza benchi
, tinthu ting’onoting’ono tomwe tili kuseri kwa chipcho timagwa chikatenthedwa. Kumamatira zigawo zingapo kuli bwino kusiyana ndi kumata wosanjikiza umodzi. Ngati mumamatira wosanjikiza umodzi, kutentha kwapamwamba kumasungunula guluu pa pepala la malata ndikukakamira pa bolodi, lomwe ndi lonyansa kwambiri. Ngati mumamatira zigawo zingapo, chodabwitsachi sichidzawoneka.