Mu PCBA processing ndondomeko, kuwonjezera mtanda soldering ntchitoreflowuvunindiwave solderingmakina, soldering pamanja amafunikanso kuti apange mankhwala onse.
Mfundo zofunika kuziganizira mukamagwiritsa ntchito PCBA soldering:
1. Ayenera kugwira ntchito ndi mphete ya electrostatic, thupi la munthu likhoza kupanga ma volts oposa 10,000 a magetsi osasunthika, ndipo IC idzawonongeka pamene voteji imakhala yoposa 300 volts, kotero thupi laumunthu liyenera kutulutsa magetsi osasunthika pansi.
2. Valani magolovesi kapena chivundikiro chala kugwira ntchito, manja opanda manja sangathe mwachindunji kukhudza bolodi ndi zigawo golide chala.
3. Weld pa kutentha koyenera, kuwotcherera ngodya, ndi ndondomeko yowotcherera, ndi kusunga nthawi yoyenera kuwotcherera.
4. Gwirani PCB molondola: Gwirani m'mphepete mwa PCB pamene mukunyamula PCB ndipo musakhudze zigawo pa bolodi ndi manja anu.
5. Yesani kugwiritsa ntchito kuwotcherera otsika kutentha: kuwotcherera kwapamwamba kwambiri kumafulumizitsa makutidwe ndi okosijeni wa nsonga yachitsulo, kuchepetsa moyo wa nsonga yachitsulo.Ngati soldering chitsulo nsonga kutentha kuposa 470 ℃.Kuchuluka kwake kwa okosijeni kuwirikiza kawiri ngati 380 ℃.
6. Musagwiritse ntchito mphamvu zambiri pamene mukuwotchera: pamene mukuwotchera, chonde musagwiritse ntchito kupanikizika kwambiri, mwinamwake zidzapangitsa kuti mutu wachitsulo uwonongeke, kusinthika.Malingana ngati nsonga ya chitsulo chosungunula imatha kukhudzana ndi mgwirizano wa solder, kutentha kumatha kusamutsidwa.(Malinga ndi kukula kwa olowa solder kusankha osiyana chitsulo nsonga, kuti nsonga chitsulo angathenso bwino kutentha kutengerapo).
7. soldering si kugogoda kapena kugwedeza chitsulo nozzle: kugogoda kapena kugwedeza chitsulo nozzle kupanga Kutentha pachimake kuwonongeka ndi malata mikanda kuwaza, kufupikitsa moyo utumiki wa Kutentha pachimake, malata mikanda ngati splash pa PCBA akhoza kupanga dera lalifupi. , zomwe zimapangitsa kuti magetsi asagwire bwino ntchito.
8. gwiritsani ntchito siponji yamadzi yonyowa kuti muchotse chitsulo chachitsulo chokhala ndi okusayidi komanso malata ochulukirapo.Kuyeretsa madzi a siponji kuti agwirizane, okhutira ndi madzi ochuluka kuposa osati sangathe kuchotsa mutu wachitsulo chosungunuka pazitsulo zopangira solder, komanso chifukwa cha kutsika kwakukulu kwa kutentha kwa mutu wachitsulo (chinthu chotenthetsera ichi ndi mutu wachitsulo ndi chitsulo). Kutentha kwachitsulo mkati mwachitsulo, kuwonongeka kuli kwakukulu) ndi kutulutsa kutayikira, kutsekemera kwabodza ndi kutsekemera kwina kosauka, kutsekemera kwachitsulo kumutu kwamadzi kumamatira ku bolodi kumayambitsanso dzimbiri la bolodi la dera ndi dera lalifupi ndi zina zoipa, ngati madzi ali chochepa kwambiri kapena ayi chonyowa madzi mankhwala, Zidzapanga soldering chitsulo mutu kuwonongeka, makutidwe ndi okosijeni ndi kuchititsa kuti pa malata, chimodzimodzi zosavuta chifukwa soldering zabodza ndi zina osauka soldering.Nthawi zonse fufuzani madzi okhutira mu siponji yoyenera, pamene osachepera 3 pa tsiku kuyeretsa siponji mu zinyalala ndi zinyalala.
9. Kuchuluka kwa malata ndi flux kuyenera kukhala koyenera pomangirira.Kwambiri solder, zosavuta chifukwa ngakhale malata kapena kubisa kuwotcherera zilema, pang'ono solder, osati otsika makina mphamvu, ndi chifukwa cha pamwamba makutidwe ndi okosijeni wosanjikiza pang'onopang'ono kwambiri m'kupita kwa nthawi, zosavuta kutsogolera kulephera kwa solder olowa.Kuchulukirachulukira kwambiri kumaipitsa ndikuwononga PCBA, zomwe zingayambitse kutayikira ndi zolakwika zina zamagetsi, zochepa sizigwira ntchito.
10. Nthawi zambiri kusunga soldering chitsulo mutu pa malata: izi zikhoza kuchepetsa makutidwe ndi okosijeni wa soldering mutu chitsulo, kuti mutu chitsulo cholimba.
11. solder spatter, zochitika za solder mipira ndi soldering ntchito ndi luso ndi soldering chitsulo mutu kutentha;Soldering Flux Spotter Vuto: Pamene soldering chitsulo mwachindunji anasungunuka solder waya, Flux adzakhala mofulumira kutentha ndi kuwaza, pamene soldering, kutenga solder waya si mwachindunji kukhudzana chitsulo njira, akhoza kuchepetsa flux spatter.
12. Pamene kusungunula, samalani kuti musapangitse chitsulo chotenthetsera kutentha mozungulira pulasitiki yotchinga chingwe cha waya ndi pamwamba pa zigawo zikuluzikulu, makamaka pamene mukugwedeza mawonekedwe osakanikirana, mawonekedwe a zinthu zovuta kwambiri.
13. Pamene soldering, m'pofunika kudziyesa nokha.
a.Kaya pali kutayikira kwa kuwotcherera.
b.Kaya cholumikizira cha solder ndi chosalala komanso chodzaza, chonyezimira.
c.Kaya pali solder yotsalira kuzungulira cholumikizira cha solder.
d.Kaya pali malata.
e.Kaya pad yazimitsidwa.
f.Kaya cholumikizira cha solder chili ndi ming'alu.
g.Kaya zolumikizira zogulitsa zidakoka nsonga ya chochitikacho.
14. kuwotcherera, komanso ayenera kulabadira zinthu zina chitetezo, kuvala chigoba, ndi zimakupiza ndi zina mpweya zida kukhalabe mpweya wa siteshoni kuwotcherera.
Mu PCBA kuwotcherera Buku, tcheru kusamala zina zofunika, akhoza kwambiri kusintha luso kuwotcherera ndi mankhwala kuwotcherera khalidwe.
Nthawi yotumiza: Mar-03-2022