Yog vim li cas peb xaiv aluminium rau kho kom zoo nkauj yog vim nws cov qauv ruaj khov dua, thiab nws muaj corrosion kuj nyob rau hauv lub sij hawm ntev siv.Txawm li cas los xij, qee qhov txhuas profile yuav muaj corrosion nyob rau saum npoo, uas yog vim yog cov khoom siv tsis raug thaum lub sijhawm tsim khoom.
1. Nyob rau hauv tus txheej txheem ntawm casting, qhov kev faib ua feem ntawm magnesium thiab silicon tsis tsim nyog, xws li lub hav zoov ntawm ib co surplus silicon, uas muaj ib tug me me ntawm silicon nyob rau hauv ib tug dawb lub xeev, yuav tsim ternary compounds nyob rau hauv aluminium alloy tib lub sij hawm. .Cov theem impurity insoluble los yog dawb impurity theem tsim nyob rau hauv lub alloy yuav sib sau ua ke nyob rau hauv lub grain ciam teb, thiab tsis muaj zog thiab toughness ntawm grain ciam nyob rau tib lub sij hawm, ua lub weakest txuas ntawm corrosion kuj, thiab corrosion firstly pib los ntawm muaj.
2. Nyob rau hauv cov txheej txheem ntawm smelting, txawm hais tias qhov kev faib ua feem ntawm magnesium thiab silicon yog nyob rau hauv tus qauv, tab sis qee zaum vim tsis sib npaug thiab tsis txaus sib xyaw, ua rau tsis sib xws ntawm silicon hauv cov yaj, muaj cov nplua nuj thiab cov chaw tsis zoo.Ib qho me me ntawm silicon dawb nyob rau hauv aluminium matrix yuav tsis tsuas yog txo cov corrosion kuj ntawm cov alloy, tab sis kuj coarse lub grain loj ntawm alloy.
3. Kev tswj ntawm ntau yam kev siv tshuab thaum lub sij hawm extrusion, xws li bar preheating kub yog siab dhau lawm, cov hlau extrusion txaus tus nqi, cua txias zog thaum extrusion, laus kub thiab tuav lub sij hawm thiab lwm yam kev tswj tsis zoo yog yooj yim los tsim silicon segregation thiab dissociation, kom magnesium thiab silicon tsis tag ua Mg2Si, qee qhov dawb silicon muaj.
Nyob rau hauv luv luv, yog hais tias lub nto ntawm lub txhuas profile yog ib qho yooj yim mus corrode nyob rau hauv kev siv, vim hais tias cov txheej txheem zoo ntawm aluminium profile yog tsawg heev nyob rau hauv ntau lawm, yog li peb yuav tsum nrhiav ib tug kws tsim tshuaj paus thaum xaiv cov txhuas profile, yog li cov txhuas profile koj xaiv yuav muaj kev ruaj ntseg dua.
Post lub sij hawm: May-10-2022
