1. Kev npaj ntawm ntu: ntu tau arc-sib tsoo, daim tawv nqaij oxide tau muab tso rau ntawm qhov chaw vuam, thiab cov radian kuj ua tau raws li cov txheej txheem. Cov hauj lwm tom ntej no muaj ob yam: 1. Pab pawg raws li qhov siab ntawm ntu, kom lub welded saw hniav yog puag ncig li sai tau. 2. Ntxuav cov ntu nrog acetone lossis roj av, thiab lwm yam thiab ziab kom qhuav kom ruaj khov.
2. Kev npaj ntawm lub hauv paus lub cev: muaj ntau cov roj stains (tiv thaiv xeb, roj) ntawm lub hauv paus lub cev thiab txawm xeb. Nws yuav tsum tau muab ntxuav kom zoo, thiab xeb ntawm ob lub dav hlau raug tshem tawm nrog ib daim ntaub emery. Sib tsoo lub vuam nto ntawm lub phaj grinder kom tshem tawm cov burrs thiab xeb kom ntseeg tau ruaj khov.
3. Kev npaj cov ntawv vuam thiab flux: Cov ntawv vuam feem ntau yog dov rau hauv ib daim hlab, txiav rau hauv ib daim hlab nrog qhov dav ntawm li 0.5-1 0cm, thiab coiled rau hauv cov discs, uas yooj yim rau kev siv lub tshuab vuam tsis siv neeg. Lub thickness yog 0 1-0.5mm. Yog tias vuam los ntawm tes, txiav rau qhov loj me nrog txiab. Txhawm rau kom ua tiav txoj haujlwm vuam kom zoo, txheej txheej ntawm cov nyiaj brazing flux yog sib npaug ntawm qhov chaw sib txuas ntawm vuam (nodes, substrates thiab solder pieces), lub hom phiaj yog los txhawb kev txo cov oxides ntawm qhov chaw ntawm cov khoom siv. thiab txhawb cov melting ntawm cov khoom solder, npog lub fluidity ntawm solder tab yaj, thiab lwm yam.
Kev xaiv solder yog ib qho tseem ceeb rau kev ua hauj lwm, lub solder yuav tsum tau raws li cov hauv qab no yuav tsum tau: 1. Lub melting kub ntawm lub solder yog qis dua qhov kub nias sintering kub ntawm ntu, feem ntau yog 100-200 degrees Celsius qis dua. Yog tias qhov kub ntawm qhov sib txawv me me dhau lawm, nws tuaj yeem yaj los yog volatilize qhov qis melting point Cheebtsam hauv ntu matrix thaum vuam, uas yuav cuam tshuam rau vuam zoo thiab qhov zoo ntawm ntu. 2. Lub solder muaj zoo weldability rau ntu thiab cov hlau matrix. 3. Tom qab lub solder yog melted, lub fluidity yuav tsum zoo, thiab nto nro yuav tsum me me thiaj li hais tias nws muaj peev xwm sau cov welded ib feem thiab ua rau lub vuam ruaj khov. 4. Kev lag luam zoo thiab cov khoom siv txaus. 5. Ua tau raws li kev tiv thaiv ib puag ncig
