Kufunika kwa SMT Placement Processing Kupyolera mu Mlingo

SMT makhazikitsidwe processing, kudzera mlingo amatchedwa njira ya moyo wa masungidwe processing fakitale, makampani ena ayenera kufika 95% mwa mlingo ndi kwa mzere muyezo, kotero kudzera mlingo wa mkulu ndi otsika, kusonyeza mphamvu luso la masungidwe processing fakitale, ndondomeko khalidwe. , kupyolera mu mlingo akhoza kusintha mphamvu ya kampani, kuchepetsa ndalama zopangira, Z ndizofunika kuti zitheke kukhazikika, kupititsa patsogolo kukhutira kwamakasitomala.

Tanthauzo la mlingo wowongoka

Mlingo wofikira muyezo wotumizira nthawi imodzi.

Mlingo wowongoka (First Pass Yield, FPY) makamaka amatanthauza: kuchuluka kwa zinthu zabwino zomwe zapambana mayeso onse nthawi yoyamba yomwe ndondomekoyi imayikidwa mu ma PCB 100 pamzere wopanga.Choncho, pambuyo kupanga mzere rework kapena kukonza pochitika mankhwala mayeso, osati mbali ya molunjika-kudzera mlingo mawerengedwe.

Ndi zinthu ziti zomwe zimakhudza mlingo wowongoka

1. zida (kuphatikiza zinthu zosiyanasiyana zamagetsi pazaka zoyambirira, kuphatikiza matabwa a PCB)

2. phala la solder

3. khalidwe ndi maganizo a antchito

Momwe mungakulitsire ndikuwongolera kuchuluka kowongoka

Mlingo wowongoka umagwirizana ndi phindu komanso moyo wabizinesi, kotero fakitale iliyonse ya chip imagwira kukhathamiritsa ndi kuwongolera mowongoka, 100% sindingathe kufikira, komanso ndikuyembekeza kukhala ndi zoposa 98%.

Chifukwa chake, mutha kuwongolera kuchuluka kowongoka kudzera m'mawu otsatirawa.

1. Konzani kamangidwe ka pcb board stencil

Kuposa 70% ya kuwotcherera khalidwe mu solder phala ndondomeko yosindikiza, amene ndi makampani SMT mwachidule zinachitikira deta, solder phala kusindikiza ndi smt Z kutsogolo ndondomeko ndondomeko, solder phala kuchepetsa, kukoka nsonga, kugwa, nthawi zambiri ndi zolakwika za mapangidwe a stencil, stencil ikhoza kukhala yayikulu kwambiri / mitseko yaying'ono, khoma la bowo la stencil, ndi zina zotere zingayambitse zoyipa zomwe tazitchula pamwambapa, zomwe zimatsogolera ku pcb pads pa phala ndi zoyipa, zomwe zimapangitsa kuwotcherera Koyipa, motero kumakhudza mowongoka. mlingo.

2. Sankhani mtundu woyenera wa solder phala

Solder phala ndi chisakanizo cha zitsulo zosiyanasiyana ndi fluxes, ofanana ndi mankhwala otsukira mano, phala solder anawagawa 5, 3 ndi mitundu ina yosiyanasiyana ya solder phala, mankhwala osiyana ayenera kusankha osiyana solder phala kusindikiza.

Nkhani mwatsatanetsatane za solder phala

SMT chip processing momwe mitundu ya solder phala, kusungirako ndi kugwiritsa ntchito chidziwitso chofunikira cha chilengedwe

3. SinthaniMakina osindikizira a SMTsqueegee angle, kuthamanga

Makina osindikizira scraper kuthamanga, ngodya idzakhudza zinthu za solder phala, kupanikizika kuli kwakukulu, kungayambitse phala lochepa la solder, ndi mosemphanitsa, mbali ya Z yabwino ndi madigiri 45-60.

4. Reflow uvunikutentha kopindika

Malinga ndi mankhwala osiyanasiyana, kusintha preheating nthawi, reflow kutentha pamapindikira, ntchito ng'anjo kutentha Tester, pafupi ndi kutentha kwenikweni kwa kupanga, ndiyeno kupeza ng'anjo kutentha pamapindikira, ndiyeno kusintha ng'anjo kutentha pamapindikira, kuti ng'anjo kutentha. kupindika molingana ndi phala la solder ndi zofunikira za soldering.