1. Kev kho deg ntawm vuam
Cov weldments ntsib hauv phau ntawv soldering yog ntau yam khoom siv hluav taws xob thiab cov xov hlau. Tshwj tsis yog cov khoom siv hluav taws xob nyob rau hauv "lub sij hawm pov hwm" yog siv nyob rau hauv loj-scale ntau lawm tej yam kev mob, cov weldments ntsib nyob rau hauv feem ntau yuav tsum tau ntxuav nto. Ua hauj lwm, tshem tawm xeb, roj, plua plav thiab lwm yam impurities uas cuam tshuam rau qhov vuam zoo ntawm qhov chaw vuam. Hauv kev lag luam phau ntawv, txoj hauv kev yooj yim thiab yooj yim xws li kev siv tshuab scraping thiab cawv thiab acetone scrubbing feem ntau yog siv.
2. Pre-soldering
Pre-soldering yog kom ntub cov khoom ua los yog cov khoom siv vuam yuav tsum tau soldered nrog solder ua ntej, tseem hu ua tinning, tinning, tinning, thiab lwm yam. Nws yog qhov tseeb hu ua pre-soldering, vim nws cov txheej txheem thiab cov txheej txheem yog tag nrho cov txheej txheem. ntawm soldering - lub solder wets nto ntawm ib feem ntawm lub soldered, thiab tom qab lub sib koom txheej yog tsim los ntawm lub diffusion ntawm cov hlau, qhov chaw ntawm lub soldered ib feem yog "plated" nrog ib tug txheej ntawm solder.
Pre-soldering tsis yog ib qho tseem ceeb ntawm kev ua haujlwm rau soldering, tab sis nws yuav luag tsis muaj qhov tseem ceeb rau phau ntawv soldering, tshwj xeeb tshaj yog txij nkawm, debugging, thiab kev loj hlob.
3. Tsis txhob siv dej ntau dhau
Qhov zoo ntawm flux yog qhov tseem ceeb, tab sis tsis txhob xav tias ntau dua yog qhov zoo dua. Cov rosin ntau dhau tsis tsuas yog ua rau kev ua haujlwm ntawm kev tu ib ncig ntawm cov pob qij txha tom qab vuam, tab sis kuj ua rau lub sijhawm cua sov (rosin melts, volatilizes thiab tshem tawm cov cua sov), txo cov haujlwm ua haujlwm; thiab thaum lub sij hawm cua sov tsis txaus, nws yog ib qho yooj yim uas yuav tsum tau tov rau hauv lub solder los ua "Slag inclusion" defect; rau kev sib txuas ntawm cov khoom siv hloov pauv, cov dej ntau dhau tau yooj yim ntws mus rau cov neeg sib cuag, ua rau muaj kev sib cuag tsis zoo.
Qhov tsim nyog ntawm cov khoom siv yuav tsum yog tias cov dej rosin tsuas tuaj yeem ntub cov pob qij txha los tsim, thiab tsis txhob cia cov dej rosin ntws los ntawm cov ntawv luam tawm mus rau cov khoom siv saum npoo lossis qhov (xws li IC sockets). Rau cov xov hlau uas muaj rosin cores, tsis tas yuav tsum muaj flux ntxiv.
4. Khaws lub hau ntawm cov hlau soldering kom huv si
Vim hais tias cov ntsiab lus ntawm cov hlau yog nyob rau hauv qhov kub thiab txias rau lub sij hawm ntev thaum lub sij hawm soldering, thiab nws los rau hauv kev sib cuag nrog cov khoom decomposed los ntawm tshav kub xws li flux, nws nto yog yooj yim oxidized los tsim ib txheej ntawm dub impurities. Cov impurities no yuav luag tsim cov txheej txheem thermal rwb thaiv tsev, uas ua rau cov hlau nplaum plam nws cov cua sov. Yog li ntawd, nws yog ib qho tsim nyog yuav tau txhuam cov impurities ntawm cov hlau soldering txhua lub sijhawm. So lub taub ntawm cov hlau nplaum txhua lub sijhawm nrog cov ntaub ntub dej lossis daim txhuam cev kuj yog ib txoj hauv kev.
5. Tus nqi ntawm cov solder yuav tsum tsim nyog
Cov khoom siv ntau dhau tsis tsuas yog siv cov tin kim kim tsis tsim nyog, tab sis kuj ua rau lub sij hawm soldering thiab txo cov kev ua hauj lwm ceev raws li. Qhov loj tshaj yog tias nyob rau hauv high-density circuits, ntau tshaj tin tau yooj yim ua rau imperceptible luv circuits.
Txawm li cas los xij, me ntsis solder tsis tuaj yeem tsim ib daim ntawv cog lus ruaj khov thiab txo lub zog ntawm cov pob qij txha. Tshwj xeeb tshaj yog thaum soldering hlau ntawm lub rooj tsavxwm, tsis txaus solder feem ntau ua rau cov xov hlau poob.
6. Lub vuam yuav tsum ruaj
Tsis txhob txav los yog vibrate lub vuam ua ntej lub solder solidifies, tshwj xeeb tshaj yog thaum siv tweezers los clamp lub vuam, nco ntsoov tos kom lub solder solidify ua ntej tshem tawm cov tweezers. Qhov no yog vim cov txheej txheem solidification ntawm solder yog txheej txheem crystallization. Raws li lub crystallization txoj kev xav, sab nraud quab yuam (kev txav ntawm lub vuam) thaum lub sij hawm crystallization yuav hloov lub crystallization tej yam kev mob, uas ua rau coarse crystals, uas ua rau lub thiaj li hu ua "kub vuam". Cov tsos mob tshwm sim yog tias qhov saum npoo yog npub thiab taum dregs-zoo li; Cov txheej txheem sab hauv ntawm cov khoom siv sib txuas yog xoob, thiab nws yooj yim kom muaj huab cua sib txawv thiab tawg, ua rau txo qis ntawm lub zog ntawm cov khoom sib txuas thiab cov hluav taws xob tsis zoo. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tau ua kom lub vuam nyob ruaj khov ua ntej lub solder solidifies. Hauv kev ua haujlwm tiag tiag, ntau txoj hauv kev tsim nyog tuaj yeem siv los kho qhov vuam, lossis kev ntsuas clamping txhim khu kev qha tuaj yeem siv.
7. Kev khiav tawm ntawm cov hlau soldering yog exquisite
Soldering hlau yuav tsum tau tuav nyob rau hauv lub sij hawm, thiab lub kaum sab xis thiab cov kev taw qhia ntawm kev khiav tawm muaj ib tug tej yam kev sib raug zoo nrog rau cov tsim ntawm solder pob qij txha.
Maj mam tig cov hlau soldering thaum tshem nws kom cov pob qij txha zoo soldered, uas yuav tsum tau muaj kev paub txog hauv kev xyaum.
