Dab tsi hlau tuaj yeem siv hluav taws xob soldering hlau
Muaj ntau ntau hom hlau uas hluav taws xob soldering hlau tuaj yeem welding, uas tuaj yeem siv rau cov khoom siv hlau xws li tooj liab, txhuas, thiab hlau.
Thaum siv hluav taws xob soldering hlau rau vuam hlau, cov khoom raug tshem tawm los ntawm txheej txheej oxide nrog tin, rosin, lossis acidic tus neeg sawv cev. Hluav taws xob soldering hlau feem ntau yog siv los vuam cov khoom siv hluav taws xob, ntau yam xov hlau sib txuas, thiab lwm yam.
Hluav taws xob soldering hlau vuam yog Soldering, thiab qhov kub thiab txias feem ntau tsis siab. Feem ntau, cov ntsiab lus melting ntawm cov khoom siv vuam (cov khoom siv hlau) siv yog tsawg, uas feem ntau tsis tshaj 400 degrees.
Cov khoom siv hlau siv ua ke nrog cov hluav taws xob soldering hlau feem ntau yog tin, uas feem ntau yog siv los ua ib qho kev sib txuas rau Circuit Court board vuam, thiab cov yas kuj tuaj yeem raug soldered.
1. Kev kho deg ntawm vuam qhov chaw
Cov khoom siv soldering welded los ntawm phau ntawv soldering hlau feem ntau yog cov khoom siv hluav taws xob thiab cov xaim hluav taws xob, thiab nyob rau hauv kev tsim khoom loj, cov khoom siv hluav taws xob hauv "lub sijhawm pov hwm" yuav raug siv.
Feem ntau, kev ua haujlwm tu saum npoo yog xav tau rau vuam qhov chaw nrog hluav taws xob soldering hlau kom tshem tawm xeb, roj, plua plav, thiab lwm yam impurities uas cuam tshuam rau vuam zoo ntawm qhov vuam nto.
Tej yam yooj yim thiab yooj yim txoj kev xws li mechanical scraping thiab cawv, acetone scrubbing, thiab lwm yam yog feem ntau siv nyob rau hauv phau ntawv ua haujlwm.
2. Ua ntej vuam
Pre soldering yog hais txog wetting cov hlau lead lossis conductive soldering ib feem ntawm cov khoom yuav tsum tau soldered nrog soldering tin ua ntej, feem ntau hu ua tin plating, tin txheej, tin hauv ob sab phlu, thiab lwm yam.
Vim li cas ho 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 nto ntawm lub solder, tsim ib tug bonding txheej los ntawm diffusion ntawm hlau, thiab ua rau lub nto ntawm solder yuav "coated" nrog ib tug txheej ntawm solder.
Pre soldering tsis yog ib qho tseem ceeb ntawm kev ua haujlwm rau soldering, tab sis nws yog ib qho tseem ceeb rau kev siv phau ntawv soldering, tshwj xeeb tshaj yog rau kev tu, debugging, thiab kev txhim kho kev ua haujlwm.
3. Tsis pub haus dej ntau dhau
Tus nqi tsim nyog ntawm soldering flux yog qhov tseem ceeb, tab sis tsis yog qhov zoo dua. 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 melting, volatilization yuav tsum tshem tawm cov cua sov), thiab txo kev ua haujlwm;
Thaum lub sij hawm cua sov tsis txaus, nws yog ib qho yooj yim uas yuav tsum tau tov rau hauv lub solder los tsim "slag inclusion" defects; Thaum welding hloov cov khoom, ntau dhau flux tuaj yeem yooj yim ntws mus rau cov neeg sib cuag, ua rau muaj kev sib cuag tsis zoo.
Qhov tsim nyog ntawm flux yog tias cov naj hoom xoob tuaj yeem tsuas yog ntub cov khoom sib koom ua ke los tsim, thiab cov naj hoom xoob yuav tsum tsis txhob ntws mus rau hauv cov khoom siv los yog lub qhov (socket) (xws li IC socket) los ntawm cov ntawv luam tawm.
Rau welding xov hlau nrog rosin core, nws yog ib qho tseem ceeb tsis tas yuav thov cov flux dua.
