Isizathu sokuba sikhethe i-aluminium yokuhlobisa kukuba isakhiwo sayo sizinzile, kwaye sinokuchasana nokugqwala ekusebenziseni ixesha elide.Nangona kunjalo, ezinye iiprofayili ze-aluminium ziya kuba ne-corrosion phezu komhlaba, eyona nto ibangelwa ukuhlanganiswa kwezinto ezingalunganga ngexesha lokuvelisa.
1. Kwinkqubo yokuphosa, umlinganiselo we-magnesium kunye ne-silicon ayifanelekanga, njengobukho be-silicon ye-surplus, ene-silicon encinci kwi-free state, iya kwenza i-ternary compounds kwi-aluminium alloy ngexesha elifanayo. .Ezi zigaba zokungahlambuluki ezinganyibilikiyo okanye izigaba zokungcola kwamahhala ezenziwe kwi-alloy zivame ukuqokelela kumda wengqolowa, kwaye zenze buthathaka amandla kunye nokuqina komda wengqolowa ngaxeshanye, zibe likhonkco elibuthathaka lokuxhathisa ukubola, kwaye ukubola kuqala kuqala ukusuka apho.
2. Kwinkqubo ye-smelting, nangona umlinganiselo we-magnesium kunye ne-silicon ungaphakathi komgangatho, kodwa ngamanye amaxesha ngenxa yokuxuba okungafaniyo kunye nokungonelanga, okubangelwa ukusabalalisa okungafaniyo kwe-silicon kwi-melt, kukho iindawo ezicebileyo kunye neendawo ezihlwempuzekileyo.Inani elincinci le-silicon yamahhala kwi-matrix ye-aluminium ayiyi kunciphisa kuphela ukuxhathisa kwe-corrosion ye-alloy, kodwa iphinde idibanise ubungakanani beenkozo ze-alloy.
3. Ukulawulwa kweeparamitha ezahlukeneyo zobuchwepheshe ngexesha lokukhupha, ezifana ne-bar preheating lokushisa liphezulu kakhulu, isantya sokuhamba kwentsimbi, amandla okupholisa umoya ngexesha lokukhupha, ubushushu bokuguga kunye nokubamba ixesha kunye nolunye ulawulo olungafanelekanga kulula ukuvelisa ukuhlukana kwe-silicon kunye nokwahlula. Ukwahlukana, ukuze i-magnesium kunye ne-silicon ingabi yi-Mg2Si ngokupheleleyo, enye i-silicon yamahhala ikhona.
Ngamafutshane, ukuba umphezulu weprofayile ye-aluminium kulula ukuyisebenzisa, kungenxa yokuba umgangatho womgangatho weprofayili ye-aluminium uphantsi kakhulu kwimveliso, ngoko ke kufuneka sifumane umenzi oqeqeshiweyo xa ukhetha iprofayili ye-aluminium, ngoko ke iprofayili ye-aluminiyam. ukukhetha kuya kukhuseleka ngakumbi.
Ixesha lokuposa: May-10-2022
