Chifukwa chiyani kuwotcherera opanda kanthu kwa zigawozo?

SMD idzakhala ndi zolakwika zosiyanasiyana zomwe zimachitika, mwachitsanzo, mbali ya solder yopanda kanthu, makampaniwa amatchedwa chodabwitsa ichi.

Malekezero amodzi a chigawo warped motero kuchititsa chipilala chopanda solder, ndi zifukwa zosiyanasiyana mapangidwe.Lero, tifotokoza zomwe zimayambitsa zochitikazo komanso njira zina zowongolera.

1.Chosindikiza cha solder pastesi lathyathyathya, mbali imodzi ya pedi malata kwambiri, mapeto ena zochepa malata

Ichi ndi kutsogolo mapeto a chigamba zinayambitsa, chifukwa m'goli solder phala kusindikiza, solder phala kusindikiza pa malekezero onse a PAD si kuchuluka komweko, chifukwa kumbuyo kwa kuwotcherera Kutha nthawi si chimodzimodzi, chifukwa mu mavuto ndi osati chimodzimodzi, ndipo motero mbali imodzi inapotozedwa kupanga solder yopanda kanthu.

Njira yabwino yowonjezerera izi ndikuwonjezera SPI kumbuyo kwa makina osindikizira a solder phala, yesetsani kuzindikira zolakwika zosindikizira, kupewa kutuluka kwa kuwotcherera ndiyeno vuto, kuti nthawi yokonzanso ntchitoyo iwononge komanso mtengo wake ukhale wapamwamba.

2.Sankhani ndi kuika makinakukwera malekezero onse awiri si osungunula kapena kuchepetsa

Pambuyo paMakina a SMDimayamwa kagawo kakang'ono, kungayambitse mphuno yoyamwa kuti itenge kupotoka kapena kamera imawerengera kulondola kwa chiwerengero cha nambala pang'ono chifukwa cha chakudya cha flyer, zomwe zimapangitsa kuti pakhale kuyika, mapeto a pad amaikidwa kwambiri, mapeto amodzi ndi kuikidwa pang'ono kuti awulule ku pad kunja, motero kumatsogolera ku nthawi yowotcherera reflow pamene nthawi yotentha yosungunuka imakhala yosiyana, kukwera nthawi ya malata ndi yosiyana, kumabweretsa kusagwirizana kosiyana, kumayambitsa nkhondo.

Njira yothetsera vutoli, kumbali imodzi ndikusunga chowulutsira chokwera ndi kamera nthawi zonse, kupewa kuyamwa ndikuyika kupotoka.kumbali ina, pali bajeti yopezera aMakina a SMT AOI, kuzindikira mtundu wa kuyika.

3.Makina opangira zitsulong'anjo kutentha pamapindikira vuto kukhazikitsa

Reflow soldering yokha ili ndi magawo anayi a kutentha, ntchito yosiyana ya kutentha ndi yosiyana, mu preheating ndi kutentha kosalekeza, zigawo zina zikhoza kukhala pafupi ndi zigawo zapamwamba, zomwe zimapangitsa kuti mbali imodzi ikhale yotentha kwambiri, polowa siteji yowotcherera, kutentha ndi osiyana kutsogolera kwa solder phala kutentha kusungunuka nthawi yosiyana, kuwonekera ataima chipilala kuwotcherera opanda kanthu.

Pazifukwa zitatu zomwe zili pamwambazi ndi zomwe zimayambitsa zigawo zikuluzikulu zokhotakhota kuyimirira piritsi chopanda kanthu, ngati mukupanga, chodabwitsa ichi chikhoza kukhala kuchokera kuzinthu izi za kuthetsa mavuto.