1. Khumbuza wonke umntu ukuba ajonge inkangeleko kuqala emva kokufumana ibhodi engenanto yePCB ukubona ukuba kukho isekethe emfutshane, ikhefu lesekethe kunye nezinye iingxaki.Emva koko uqhelane nebhodi yophuhliso lomzobo wesicwangciso, kwaye uthelekise umzobo weskim kunye nomaleko wokuprinta kwesikrini se-PCB ukunqanda iyantlukwano phakathi komzobo weskim kunye nePCB.
2. Emva kwezixhobo ezifunekayoreflow ovenzilungile, amacandelo kufuneka ahlelwe.Onke amacandelo anokwahlulwa abe ngamacandelo amaninzi ngokobukhulu bawo ukuze kube lula ukuwelda okulandelayo.Kufuneka kuprintwe uluhlu olupheleleyo lwemathiriyeli.Kwinkqubo ye-welding, ukuba akukho welding egqityiweyo, nqumla iinketho ezihambelanayo kunye nepeni, ukwenzela ukuba kube lula ukusebenza kwe-welding elandelayo.
3. Ngaphambiliumatshini wokuphinda uphinde udibanise, thatha amanyathelo esd, njengokugqoka i-esd ring, ukukhusela umonakalo we-electrostatic kumacandelo.Emva kokuba zonke izixhobo ze-welding zilungile, qiniseka ukuba intloko yentsimbi ye-solder icocekile kwaye icocekile.Kunconywa ukuba ukhethe intsimbi ye-Angle yokusondeza kwi-welding yokuqala.Xa ukudibanisa izinto ezifakwe kwi-welding ezifana nohlobo lwe-0603, isinyithi se-soldering sinokuqhagamshelana kangcono ne-welding pad, ekulungele ukuwelda.Ngokuqinisekileyo, kwinkosi, oku akuyona ingxaki.
4. Xa ukhetha amacandelo e-welding, weld them in order from low to high and from small to large.Ukuze ugweme ukuphazamiseka kwe-welding yamacandelo amakhulu adibeneyo kumacandelo amancinci.Ngokukhethekileyo weld iitshiphusi zesekethe ezidityanisiweyo.
5. Ngaphambi kwe-welding ye-chips yesekethe edibeneyo, qinisekisa ukuba ii-chips zibekwe kwicala elichanekileyo.Kumaleko woshicilelo lwesikrini setshiphu, ipadi yoxande ngokubanzi imele isiqalo sephini.Ngexesha le-welding, enye ipini ye-chip kufuneka ilungiswe kuqala.Emva kokulungiswa kakuhle kwendawo yamacandelo, izikhonkwane ze-diagonal ze-chip kufuneka zilungiswe ukwenzela ukuba amacandelo adibaniswe ngokuchanekileyo kwindawo ngaphambi kwe-welding.
6. Akukho i-electrode efanelekileyo okanye engalunganga kwi-ceramic chip capacitors kunye ne-diodes yokulawula kwiisekethe zokulawula i-voltage, kodwa kuyimfuneko ukuhlukanisa i-electrode efanelekileyo kunye ne-negative ye-leds, i-tantalum capacitors kunye ne-electrolytic capacitors.Kwi-capacitors kunye ne-diode components, isiphelo esiphawulweyo siya kuba sibi.Kwiphakheji ye-SMT LED, kukho i-positive - isalathiso esibi ecaleni kwendlela yesibane.Kumacandelo afakiweyo kunye nokuchongwa kwesikrini se-silk somzobo wesiphaluka se-diode, i-diode embi kakhulu kufuneka ibekwe ekupheleni komgca othe nkqo.
7. kwi-crystal oscillator, i-crystal oscillator ye-passive ngokubanzi kuphela izikhonkwane ezimbini, kwaye akukho manqaku afanelekileyo kunye namabi.I-crystal oscillator esebenzayo ngokubanzi inezikhonkwane ezine.Nika ingqalelo kwinkcazo yephini nganye ukuphepha iimpazamo ze-welding.
8. Kwi-welding yamacandelo e-plug-in, njengamacandelo ahambelana nemodyuli yamandla, i-pin yesixhobo inokuguqulwa ngaphambi kokuba i-welding.Emva kokuba amacandelo abekwe kwaye agxininiswe, i-solder iyancibilika ngentsimbi ye-solder ngasemva kwaye ihlanganiswe ngaphambili nge-solder pad.Musa ukubeka i-solder eninzi, kodwa okokuqala amacandelo kufuneka azinzile.
9. Iingxaki zokuyila i-PCB ezifunyenwe ngexesha le-welding kufuneka zirekhodwe ngexesha, njengokuphazamiseka kofakelo, uyilo lwesayizi yepedi engalunganga, iimpazamo zokupakisha zecandelo, njl., ukwenzela ukuphuculwa okulandelayo.
10. emva kwe-welding, sebenzisa iglasi yokukhulisa ukujonga i-solder joints kwaye ukhangele ukuba kukho nasiphi na isiphene se-weld okanye isiphaluka esifutshane.
11. emva kokugqitywa komsebenzi webhodi yesekethe ukuwelda, utywala kunye nezinye arhente zokucoca kufuneka isetyenziswe ukucoca umphezulu ibhodi yesekethe, ukuthintela umphezulu ibhodi yesekethe encanyathiselwe intsimbi chip isiphaluka elifutshane, kodwa kwakhona ungenza ibhodi yesekethe. icocekile ngakumbi kwaye intle.
Ixesha lokuposa: Aug-17-2021