Yintoni iBGA welding

BGA welding, beka nje iqhekeza intlama kunye amacandelo BGA yebhodi yesekethe, ngokusebenzisareflow oveninkqubo yokufezekisa i-welding.Xa i-BGA ilungiswa, i-BGA nayo idityaniswe ngesandla, kwaye i-BGA idityanisiwe kwaye idityaniswe yitafile yokulungisa i-BGA kunye nezinye izixhobo.
Ngokwejiko lobushushu,umatshini wokuphinda uphinde udibaniseingohlulwa ngokwamacandelo amane: indawo yokufudumeza kwangaphambili, indawo yokugcina ubushushu, indawo yokuqukuqela kwakhona kunye nendawo yokupholisa.

1. Indawo yokufudumala
Ikwaziwa njenge ndawo yethambeka, isetyenziselwa ukunyusa iqondo lobushushu lePCB ukusuka kwiqondo lobushushu elisezantsi ukuya kwiqondo lobushushu elifunekayo.Kulo mmandla, ibhodi yesekethe kunye necandelo linamandla okushisa ahlukeneyo, kwaye izinga labo lokwenyuka kweqondo lokushisa lihlukile.

2. Indawo yokufakelwa kwe-thermal
Ngamanye amaxesha kuthiwa yindawo eyomileyo okanye emanzi, lo mmandla uthatha ama-30 ukuya kuma-50 ekhulwini wendawo yokufudumala.Eyona njongo yezowuni esebenzayo kukuzinzisa ubushushu bamacandelo kwi-PCB kunye nokunciphisa umahluko wobushushu.Vumela ixesha elaneleyo kule ndawo ukwenzela ukuba icandelo lobushushu libambe ubushushu becandelo elincinci kunye nokuqinisekisa ukuba i-flux kwi-solder paste iphelile ngokupheleleyo.Ekupheleni kwendawo esebenzayo, i-oxides kwiipads, iibhola ze-solder, kunye nezikhonkwane zecandelo ziyasuswa, kwaye ukushisa kwebhodi yonke kulinganiswe.Kufuneka kuqatshelwe ukuba onke amacandelo kwi-PCB kufuneka abe nobushushu obufanayo ekupheleni kwalo mmandla, kungenjalo ukungena kwindawo ye-reflux kuya kubangela izinto ezahlukeneyo zokuwelda ezimbi ngenxa yobushushu obungalinganiyo kwindawo nganye.

3. Indawo yeReflux
Ngamanye amaxesha kuthiwa yincopho okanye indawo yokugqibela yokufudumeza, lo mmandla usetyenziselwa ukunyusa ubushushu bePCB ukusuka kubushushu obusebenzayo ukuya kwincopho yobushushu ecetyiswayo.Iqondo lokushisa elisebenzayo lihlala liphantsi kancinci kunendawo yokunyibilika kwe-alloy, kwaye iqondo lokushisa eliphakamileyo lihlala likwindawo yokunyibilika.Ukuseta iqondo lobushushu kule ndawo liphezulu kakhulu kuya kubangela ukuba ithambeka lobushushu linyuke lidlule kwi-2 ~ 5 ℃ ngomzuzwana, okanye lenze iqondo lobushushu eliphakamileyo le-reflux libe phezulu kunoko kucetyiswayo, okanye ukusebenza ixesha elide kunokubangela ukukrazuka okugqithisileyo, ukudinwa okanye ukutshiswa komlilo. PCB, kunye nokonakalisa ingqibelelo yamacandelo.Iqondo lokushisa eliphezulu le-reflux liphantsi kunokucetyiswa, kunye ne-welding ebandayo kunye nezinye iziphene zinokuthi zenzeke ukuba ixesha lokusebenza lifutshane kakhulu.

4. Indawo yokupholisa
I-tin alloy powder ye-solder paste kule ndawo inyibilikile kwaye imanzise ngokupheleleyo indawo ukuze idityaniswe kwaye kufuneka ipholiswe ngokukhawuleza ukwenzela ukuba kube lula ukubunjwa kweekristale ze-alloy, i-joint solder ekhanyayo, imilo elungileyo kunye ne-Angle yoqhagamshelwano ephantsi. .Ukupholisa okucothayo kubangela ukuba ubumdaka bebhodi buqhekeke bube yitoti, nto leyo ekhokelela ekubeni buthuntu, iindawo ezirhabaxa zokuthengisela.Kwiimeko ezigqithileyo, kunokubangela ukunganyaniseki kakuhle kwe-tin kunye ne-solder ebuthathaka edibeneyo yokudibanisa.

I-NeoDen ibonelela ngezisombululo zomgca wendibano ye-SMT epheleleyo, kubandakanywa i-oven ye-SMT reflow, umatshini wokuthengisa amaza, umatshini wokukhetha kunye nendawo, umshicileli we-solder paste, isilayishi se-PCB, i-PCB yokothula, i-chip mounter, umatshini we-SMT AOI, umatshini we-SMT SPI, umatshini we-SMT X-Ray, Isixhobo somgca we-SMT, imveliso ye-PCB Izixhobo ze-SMT ezisecaleni, njl.njl naluphi na uhlobo oomatshini be-SMT onokubafuna, nceda uqhagamshelane nathi ngolwazi oluthe kratya:

I-Zhejiang NeoDen Technology Co., Ltd

I-imeyile:info@neodentech.com