Vim li cas Muaj Aluminium Profiles Corroded?

Yog vim li cas vim li cas tib neeg xaiv siv kev lag luam aluminium profiles rau kev kho kom zoo nkauj yog tias cov qauv ntawm kev lag luam aluminium profiles yog qhov ruaj khov thiab kuj corrosion-resistant nyob rau hauv kev siv ntev. Txawm li cas los xij, qhov chaw ntawm qee qhov kev lag luam aluminium profiles yuav raug corroded, feem ntau vim hais tias qhov kev faib ua feem ntawm cov khoom siv nyob rau hauv cov txhuas profiles tsis raug thaum ua thiab raug.

1. Tsis raug alloy qhov sib piv ntxiv

Thaum lub sij hawm casting txheej txheem, qhov sib ntxiv ntawm magnesium thiab silicon tsis tsim nyog. Piv txwv li, qee qhov ntau ntawm silicon, ntxiv rau me me ntawm silicon dawb, kuj tseem yuav tsim cov ternary compounds hauv kev lag luam txhuas. Cov theem impurity insoluble los yog dawb impurity theem tsim nyob rau hauv lub alloy yog ib qho yooj yim mus sau nyob rau hauv lub grain ciam teb, thaum tsis muaj zog thiab toughness ntawm lub grain ciam teb, yog li ua ib tug tsis muaj zog txuas nrog tsis zoo corrosion kuj. Corrosion tshwm sim thawj zaug ntawm no.

2. Kev sib xyaw tsis sib xws

Thaum lub sij hawm smelting txheej txheem, txawm hais tias qhov sib ntxiv ntawm magnesium thiab silicon yog nyob rau hauv tus txheej txheem ntau yam, tej zaum tsis sib xws thiab tsis txaus stirring yuav ua rau unevenly faib ntawm silicon nyob rau hauv lub yaj, uas yog ncaj qha reflected nyob rau hauv industrial aluminium khoom. Thaum muaj me me ntawm silicon dawb nyob rau hauv aluminium matrix, nws tsis tsuas yog txo cov corrosion kuj ntawm cov hlau, tab sis kuj coarsens cov nplej ntawm cov alloy.
3. Extrusion tsis raug

Kev tswj cov txheej txheem ntau yam thaum lub sij hawm extrusion, xws li ntau dhau preheating kub ntawm billet, kev tswj tsis raug ntawm cov hlau extrusion ntws, tswj tsis zoo ntawm cua txias siv, laus kub thiab rwb thaiv tsev lub sij hawm thaum extrusion, thiab lwm yam, yuav yooj yim ua rau cais thiab liberation ntawm silicon. , uas yuav ua rau magnesium thiab silicon tsis tig mus rau theem Mg2Si, tab sis qee qhov dawb silicon muaj nyob.

Nyob rau hauv luv luv, yog hais tias lub nto ntawm aluminium profiles yog ib qho yooj yim rau corrode thaum siv, nws yog tseem tshwm sim los ntawm cov tsis zoo qauv ntawm txhuas profiles thaum lub sij hawm ntau lawm. Yog li ntawd, thaum xaiv aluminium profiles, peb yuav tsum mus rau cov chaw tsim khoom tsis tu ncua, kom cov aluminium profiles yuav muaj kev nyab xeeb dua.