Kev txo qis ntawm cov pob oxidation feem ntau yog siv BGA solder pob oxide txheej txheej txheem tshem tawm thiab siab -kub tshuaj txo txoj kev. Lub pob oxide txheej feem ntau yog tin dioxide (SnO₂), yuav tsum muaj kev sib xyaw ua ke ntawm kev ntxuav lub cev thiab tshuaj tua kab mob kom rov qab ua cov hlau nplaum thiab cov khoom siv.
Ntxuav thiab Preheating: BGA solder npas yog immersed nyob rau hauv ib tug ultrasonic nqus tsev vacuum kom tshem tawm cov pa paug, ua raws li los ntawm qhuav nyob rau hauv ib tug qhov cub.
Soldering txo: Solder muab tshuaj txhuam yog sib npaug rau saum npoo ntawm cov khoom siv. Cov khoom xyaw nquag hauv cov flux yog siv rau reflow soldering nyob rau hauv reflow qhov cub kom txo cov oxide txheej.
Tom qab-kev kho mob: Tom qab reflow, ultrasonic tu thiab ci yog ua dua los xyuas kom meej tias tsis muaj seem seem thiab txhim kho soldering zoo.
Hydrogen Reduction: Hauv qab cua sov lossis siab - qhov kub thiab txias, hydrogen tuaj yeem cuam tshuam nrog tin oxide los tsim cov hlau tin thiab dej. Cov qauv no tsim nyog rau kev kuaj lossis kev siv tshwj xeeb hauv kev lag luam.
Cov Kws Kho Mob Tshwj Xeeb: Tin slag txo cov neeg ua haujlwm feem ntau siv hauv kev tsim khoom. Lawv txo cov oxides thiab rov ua kom ntub dej los ntawm cov tshuaj antioxidants thiab txo cov neeg ua haujlwm (xws li carbohydrates).
