Dab tsi yog Txoj Cai Ua Haujlwm Ntawm Lub Tshuab Brazing

Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub tshuab brazing yog tsuas yog yaj cov khoom siv brazing (cov khoom siv hlau nrog lub ntsiab lus melting qis dua cov khoom siv hauv paus) los ntawm cov cua sov, thiab siv cov khoom siv kua brazing kom ntub qhov sib txawv ntawm cov khoom siv hauv paus thiab kev sib koom ua ke, thiab ua tiav. cov txheej txheem ntawm kev txuas cov welded qhov chaw los ntawm kev sib nrig sib diffusion nrog cov khoom siv hauv paus. Cov hauv qab no yog cov kauj ruam tseem ceeb thiab cov hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub tshuab brazing:
Cua sov: Lub tshuab brazing siv cov cua kub sib txawv (xws li nplaim taws, induction, tsis kam, laser, thiab lwm yam) kom sov cov khoom siv brazing thiab cov khoom siv hauv paus rau qhov kub siab tshaj ntawm cov khoom siv brazing melting point tab sis hauv qab cov khoom siv melting point. Nyob rau hauv txoj kev no, cov khoom siv brazing yuav yaj mus rau hauv cov kua hauv lub xeev, thaum lub hauv paus khoom tseem ruaj khov.
Wetting thiab diffusion: Thaum cov khoom siv brazing melts, nws yuav ntub rau saum npoo ntawm cov khoom siv hauv paus, uas yog, cov khoom siv kua brazing ua ib zaj duab xis nyias ntawm cov khoom siv hauv paus. Tom qab ntawd, kev sib nrig sib diffusion tshwm sim ntawm cov kua solder thiab lub hauv paus hlau, thiab cov alloying ntsiab nyob rau hauv lub solder yuav nkag mus rau hauv lub lattice ntawm lub hauv paus hlau, thaum lub alloying ntsiab nyob rau hauv lub hauv paus hlau yuav kuj nkag mus rau hauv lub solder, tsim ib tug muaj zog metallurgical daim ntawv cog lus.
Capillary nkaus: Raws li kev ntub cov hlau hauv lub hauv paus nrog cov kua nplaum, cov kua nplaum yuav ua rau cov khoob khoob ntawm lub hauv paus hlau thiab ntws los ntawm qhov kev txiav txim ntawm capillary nyob rau hauv qhov sib koom ua ke kom sau tag nrho qhov sib koom ua ke.
Kev ua kom txias thiab ua kom khov: Thaum cov khoom siv brazing puv qhov sib koom ua ke, lub tshuab brazing nres cua sov thiab cov khoom siv brazing pib txias thiab khov. Thaum lub sij hawm solidification txheej txheem, kev sib nrig sib diffusion ntawm cov kua solder thiab lub hauv paus hlau tseem tshwm sim, ntxiv dag zog rau kev twb kev txuas. Thaum kawg, cov kua solder tag solidifies, tsim ib tug khov kho brazed sib koom.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm tshwj xeeb ntawm cov tshuab brazing tuaj yeem sib txawv nyob ntawm seb hom khoom siv thiab cov txheej txheem cua sov. Tab sis tag nrho, cov tshuab brazing ua tiav kev sib txuas ntawm cov ntaub ntawv hlau los ntawm cov kauj ruam xws li cua sov, ntub dej, diffusion, filling, thiab txias solidification. Txoj kev sib txuas no muaj qhov zoo ntawm cov pob qij txha du, qhov dav dav, me me deformation, thiab muaj peev xwm txuas cov hlau sib txawv, ua rau nws siv dav hauv kev lag luam xws li aviation, aerospace, electronics, thiab tsheb.