Kusamala pakugwiritsa ntchito uvuni wa SMT reflow.

smt reflow uvuni ndi smt kumbuyo-mapeto zida, ntchito yaikulu ndi kutentha kusungunula solder phala, ndiyeno zigawo zamagetsi kudya malata, kuti akhazikike pa pcb pad, koterosmt reflow zidandi imodzi mwamagawo atatu akuluakulu a smt, reflow soldering Zotsatira ndi zikoka ndizofunikira kwambiri pamtundu wazinthu zopangidwa.

1. Kuyika kwa malo otentha sikungasinthidwe mwachisawawa.Magawo a kutentha omwe atchulidwa pamwambapa amatsimikiziridwa molingana ndi momwe machiritso amachiritsira kuti gawo la 90% la 90% ya malo ogwira ntchito a stencil mu ng'anjo yowotcherera, ndipo kuchuluka kwa kayendedwe ka lamba ndi 75cm± 10cm/S.za.Pakakhala kusiyana kwakukulu m'dera la bolodi la pcb lokonzedwa, liwiro la lamba liyenera kukonzedwa bwino kuti likwaniritse zotsatira zabwino zowotcherera.Mfundo yaikulu ya kusintha ndi: pamene dera la pcb bolodi ndi laling'ono, liwiro la lamba wa mauna ndi mofulumira pang'ono;pamene dera la bolodi la pcb ndi lalikulu, liwiro la lamba wa mauna ndi pang'ono pang'onopang'ono, ndipo chirichonse chikuyenera kukwaniritsa zotsatira zabwino zowotcherera;

2. Magawo a PID a tebulo lowongolera kutentha sayenera kukhazikitsidwa mwachisawawa;

3. Kulowetsa ndi kutuluka kwa makina opangira reflow soldering kuyenera kupewa mphepo yakunja yomwe ikuwomba mkati ikagwiritsidwa ntchito, zomwe zingakhudze kutentha kwamphamvu mu ng'anjo ndikukhudzakuwotchererakhalidwe;

4. Potumiza PCB workpiece kuchokera ku doko kukhetsa wa ng'anjo reflow, m'pofunika kupewa ngozi scalding dzanja woyendetsa;m'pofunikanso kuteteza bolodi PCB kuti kudziunjikira mu doko kukhetsa, kuchititsa bolodi PCB kugwa kapena bolodi PCB pa kutuluka.Mphamvu yotsika ya solder pansi pa kutentha kwakukulu Zigawo za SMD zimagwa chifukwa cha kugwa kapena kuphwanya;

5. Chitani ntchito yabwino yosamalira tsiku ndi tsikumakina owotchererazida: kuyeretsa pamwamba pazidatsiku lililonse kuti likhale lopanda kuipitsidwa, dinani batani lowonjezera kamodzi pa sabata mumayendedwe owonjezera, ndipo tsitsani tcheni chodzigudubuza ndi mafuta opaka kutentha kwambiri (BIO-30);pakupanga kosalekeza, mwezi uliwonse Osachepera kawiri: Yang'anani kuti muwonjezere kutentha kwamafuta opaka mafuta pamoto wang'anjo ndi gudumu lililonse lozungulira;

6. Yang'anani ngati waya wapansi wa makina owotcherera alumikizidwa modalirika musanayambe makinawo tsiku lililonse;

7. Mukatha kuthetsa mavuto, yatsani mphamvu yayikulu ya zida ndikuyatsa choyimitsa choyimitsa mwadzidzidzi chooneka ngati bowa mozungulira molunjika kuti mubwerere momwe chidaliridwira.Makinawo akazimitsidwa, PCB ndi lamba wachitsulo wotumizira zitsulo siziyenera kuyimitsidwa mung'anjo yomwe idakali yotentha kwambiri, ndipo lamba wotumizira ayenera kuyimitsidwa kutentha kwa makinawo kwatsika.