Dab tsi yog PCBA Desoldering Method?
Oct 06, 2022
Thaum lub sij hawm desoldering txheej txheem, qee cov khoom siv hluav taws xob uas tsis zoo soldering feem ntau ntsib. Tau ntsib nrog cov khoom siv hluav taws xob hauv qhov xwm txheej no, feem ntau peb tshem tawm cov khoom siv hluav taws xob uas tau raug soldered tsis raug yam tsis muaj kev puas tsuaj rau pcb board.
Txoj kev Desoldering:
(1) Split-point desoldering txoj kev: Rau kab rov tav ntsia tsis tau-capacitance Cheebtsam, ob leeg solder pob qij txha nyob deb, thiab ib tug hluav taws xob soldering hlau yuav siv tau rau cua sov ntawm cov ntsiab lus thiab rub tawm taw tes los ntawm taw tes. Yog hais tias tus pin yog khoov, siv lub ntsis ntawm ib tug soldering hlau rau pry nws ncaj ua ntej tshem nws. Thaum desoldering, muab lub pcb upright, thaum cua sov tus pin solder pob qij txha ntawm cov khoom yuav tsum tau muab tshem tawm nrog ib tug hluav taws xob soldering hlau, siv tweezers los yog rab koob-qhov ntswg pliers clamp tus pin ntawm cov khoom thiab maj mam rub nws tawm.
(2) Centralized desoldering txoj kev: Txij li txhua tus pin ntawm kab resistor yog soldered nyias, nws yog ib qho nyuaj rau cua sov rau tib lub sij hawm nrog ib tug hluav taws xob soldering hlau. Koj tuaj yeem siv lub tshuab hluav taws xob kub kub kom kub ceev ntau lub ntsiab lus soldering, thiab rub nws tawm thaum lub solder melted. tawm.
(3) Khaws txoj kev desoldering: siv lub tshuab nqus tsev los nqus cov solder ntawm qhov chaw desoldered ua ntej. Raws li ib txwm muaj, cov khoom tuaj yeem raug tshem tawm. Yog tias koj ntsib cov khoom siv hluav taws xob ntau tus pin, koj tuaj yeem siv hluav taws xob cua kub cua tshuab rau cua sov.
Yog hais tias nws yog ib tug lap-welded tivthaiv los yog tus pin, koj muaj peev xwm dip flux ntawm lub solder sib koom thiab siv ib tug hluav taws xob soldering hlau los qhib lub solder joint, thiab cov khoom tus pin los yog hlau yuav raug tshem tawm. Yog tias nws yog cov khoom sib txuas los yog cov pins, thawj zaug siv lub tshuab hluav taws xob siv hluav taws xob kom tshem tawm cov hlau los ntawm cov pob qij txha, thiab tom qab ntawd kub nrog cov hluav taws xob soldering hlau kom yaj cov seem seem hauv qab tus nuv, thiab tib lub sijhawm siv lub spatula. nqa cov pins nyob rau hauv kev coj ntawm tus nuv kab. Tsis txhob siv lub zog ntau dhau thaum rub tawm los tiv thaiv cov hlau nplaum los ntawm kev sib tsoo rau hauv lub qhov muag lossis ntawm cov khaub ncaws.
(4) Txiav thiab desolder txoj kev: Yog tias muaj cov npoo rau cov khoom siv pins thiab cov xov hlau ntawm qhov chaw desoldered, lossis yog tias cov khoom raug txiav txim siab puas, koj tuaj yeem txiav cov khoom lossis cov xaim ua ntej, thiab tom qab ntawd tshem tawm cov hlau xaus rau cov pads. nqes los.
Teeb meem uas yuav tsum tau them sai sai rau thaum rov soldering tom qab desoldering
(1) Cov pins thiab cov xov hlau ntawm cov khoom siv rov ua dua yuav tsum zoo ib yam li cov khoom qub;
(2) Hla los ntawm qhov thaiv qhov thaiv;
(3) Restore cov khoom txav mus rau lawv qhov qub.