Lub luag haujlwm ntawm cryolite hauv casting

Cryolite yog cov khoom siv dav siv tshuaj, feem ntau siv rau electrolytic aluminium, kuj tuaj yeem siv rau hauv kev lag luam casting. Ntau tus neeg tsis nkag siab txog kev siv cov cryolite hauv kev lag luam casting, hnub no peb yuav nkag siab ua ke. Cryolite feem ntau yog siv rau hauv kev tsim cov hlau ductile, cryolite tsis hnov ​​​​mob rau dej.

1, Txau rau saum npoo ntawm cov kua hlau, tus nqi ntawm 0.1%-0.3%. Rau kev tshem tawm slag thiab npog, cryolite tuaj yeem dilute lub slag, ua kom yooj yim rau sau thiab tshem tawm. Cryolite yog decomposed los ntawm tshav kub (ntau tshaj 1011 degree) los tsim AlF3 roj. Nws tuaj yeem tiv thaiv qhov saum npoo ntawm cov kua hlau thiab tiv thaiv oxidation, tab sis cov roj no muaj kev phom sij rau tib neeg.

2. Qhov saum npoo ntawm cov kab noj hniav ntub dej yog npog nrog cov hmoov cryolite kom tiv thaiv cov pores subdermal. Tom qab nchuav, muaj cov txheej txheem cryolite ntawm cov hlau-cam khwb cia, uas tuaj yeem yaj cov dej ntawm qhov sib cuam tshuam thiab txo cov khoom tsim los ntawm kev txo cov tshuaj tiv thaiv, txo lub hauv paus xav tau rau hydrogen nag lossis daus los ua npuas core hauv interfacial kua hlau. txheej. Thaum qhov kub thiab txias, AlF3 gas tsim los ntawm decomposition ntawm cryolite tuaj yeem tiv thaiv cov tshuaj tiv thaiv ntawm cov dej sib txawv hauv cov kua hlau txheej thiab tiv thaiv hydrogen nqus ntawm cov kua hlau txheej.

3, yog tias koj tsis siv crorite, spherodizing kev kho mob vim slag viscosity, slag tshem tawm yog ib qho nyuaj, slag tshem tawm tsis huv, yog li ntawd lub casting tsim ntawm slag suav nrog tsis xws luag, tab sis kuj muaj ntau zaus qhov tshwm sim ntawm spherodization poob, tsom xam tias: qhov no tsis yog hauv qab ntawm slag muaj kev sib raug zoo vim Mgs thiab ce-2s-3 nyob rau hauv lub slag thiab oxygen nyob rau hauv cov huab cua tshuaj. Los ntawm ntau xyoo ntawm kev xyaum ntau lawm, cryolite tau ua lub luag haujlwm hauv kev txo cov porosity, slag suav nrog thiab spheroidization poob.