Vim li cas lub tshuab nqus tsev brazing furnaces feem ntau ua haujlwm zoo dua rau cov khoom siv txhuas?

Nqus brazing furnaces tsim kom huv si, cov pob qij txha muaj zog hauv txhuas dua li cov txheej txheem cua vim tias lub tshuab nqus tsev siab (10⁻⁵ mbar lossis zoo dua) tshem tawm cov pa oxygen thiab tiv thaiv kev hloov pauv oxide thaum cua sov. Atmosphere brazing xav tau aggressive fluxes tawg oxides, tawm corrosive residues uas yuav tsum tau ntxuav thiab yuav ua rau cov pob qij txha tsis muaj zog thaum lub sij hawm. Lub tshuab nqus tsev tshem tawm cov flux tag nrho, txo cov ncej- ua thiab txhim kho corrosion kuj- tseem ceeb rau cov tshuab hluav taws xob lossis cov evaporators. (nqus brazing cub) kuj ua tiav qhov kub zoo sib xws (± 3-5 degree) hla cov khoom loj, txo qis kev cuam tshuam piv rau cov pa roj- hluav taws xob cua qhov cub. Ci ntsa iab, oxide-dawb nto tuaj yeem npaj rau tha xim lossis anodizing yam tsis muaj kauj ruam ntxiv. Lub tshuab nqus tsev cov pob qij txha qhia tau tias muaj zog qaug zog ntau dua thiab ua kom tsis muaj zog- nruj raws li kev sib tw. Kev lag luam tawm - tawm yog cov khoom siv ntau dua thiab lub sij hawm mus sij hawm ntev dua vim lub twj tso kua mis - nqes, tab sis cov nqi qis dua thiab rov ua dua tau them rov qab sai hauv qhov siab - tus nqi. Rau cov ntawv thov tseem ceeb xws li aerospace lossis EV cua txias tshuab, lub tshuab nqus tsev yog tus qauv- huab cua tawm tsam kom phim qhov zoo.