Dab tsi hlau tuaj yeem siv hluav taws xob soldering hlau
Muaj ntau hom hlau uas hluav taws xob soldering hlau tuaj yeem welding, thiab tuaj yeem siv rau vuam tooj liab, txhuas, hlau thiab lwm yam khoom siv hlau.
Thaum soldering hlau nrog ib tug soldering hlau, cov khoom siv tin, rosin los yog ib tug acidic tus neeg saib xyuas kom tshem tawm cov nto oxide txheej. Cov hlau nplaum feem ntau yog siv los ua cov khoom siv hluav taws xob, ntau yam kev sib txuas ntawm cov hlau, thiab lwm yam.
soldering hlau welding yog mos soldering, feem ntau qhov kub tsis siab, thiab melting point ntawm cov khoom siv vuam (brazing khoom) feem ntau yog siv tsawg, feem ntau tsis tshaj 400 degrees.
Cov khoom siv hlau siv nrog cov hluav taws xob soldering hlau feem ntau yog cov tin, thiab cov tin feem ntau yog siv rau soldering ntawm Circuit Court boards, thiab cov yas kuj tuaj yeem raug soldered.
Txoj kev ntawm soldering nrog ib tug soldering hlau.
1. Kev kho deg ntawm weldments
Feem ntau ntawm cov weldments soldered los ntawm phau ntawv soldering hlau yog cov khoom siv hluav taws xob thiab cov xov hlau. Raws li kev tsim khoom loj, cov khoom siv hluav taws xob hauv "lub sijhawm pov hwm" yuav raug siv.
Nyob rau hauv ib txwm muaj xwm txheej, cov welded welded los ntawm cov hluav taws xob soldering hlau yuav tsum tau ntxuav kom tshem tawm xeb, roj, plua plav thiab lwm yam impurities ntawm vuam nto uas cuam tshuam rau vuam zoo.
Mechanical scraping thiab cawv, acetone scrubbing thiab lwm yam yooj yim thiab yooj yim txoj kev yog feem ntau siv nyob rau hauv phau ntawv ua haujlwm.
2. Pre-welding
Pre-soldering yog ua ntej ntub cov hlau lead ntawm cov khoom siv los yog cov khoom siv hluav taws xob nrog cov solder, feem ntau hu ua tinning, tinning, tinning, thiab lwm yam.
Yog vim li cas nws thiaj li hu ua pre-soldering, vim hais tias nws cov txheej txheem thiab cov txheej txheem yog tag nrho cov txheej txheem ntawm soldering: lub solder wets lub nto ntawm weldment, thiab tom qab lub diffusion ntawm cov hlau tsim ib tug bonding txheej, qhov chaw ntawm lub weldment yog "plated". nrog ib txheej ntawm solder.
Pre-soldering tsis yog ib qho tseem ceeb ntawm kev ua haujlwm rau kev siv vuam, tab sis nws yog ib qho tseem ceeb rau kev siv phau ntawv soldering hlau vuam, tshwj xeeb tshaj yog txij nkawm, debugging, thiab kev tshawb fawb thiab kev loj hlob.
3. Flux yuav tsum tsis txhob ntau dhau
Tus nqi ntawm flux yog qhov tseem ceeb, tab sis tsis ntau npaum li qhov ua tau. Cov rosin ntau dhau yuav ua rau kev ua haujlwm ntawm kev tu ib puag ncig ntawm kev sib koom ua ke tom qab vuam, ncua lub sijhawm cua sov (rosin melts, volatilizes thiab tshem tawm cov cua sov), thiab txo kev ua haujlwm;
Thaum lub sij hawm cua sov tsis txaus, nws yog ib qho yooj yim los muab tov rau hauv lub solder los tsim ib tug "slag inclusion" defect; rau qhov vuam ntawm kev hloov cov ntsiab lus, ntau dhau flux yuav yooj yim ntws mus rau cov neeg sib cuag, uas ua rau kev sib cuag tsis zoo.
Tus nqi tsim nyog ntawm cov khoom siv yog tias cov rosin naj hoom tsuas tuaj yeem ntub cov pob qij txha los tsim, thiab tsis txhob cia cov rosin naj hoom ntws los ntawm cov ntawv luam tawm mus rau cov khoom siv los yog lub qhov (socket) (xws li IC socket).
Rau welding hlau nrog rosin core, nws yog ib qho tseem ceeb tsis tas yuav rov thov cov flux.
