Isizathu sokuba sikhethe i-aluminium yokuhlobisa kukuba isakhiwo sayo sizinzile, kwaye inokumelana 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, njengokuba kukho enye i-silicon ye-surplus, enomlinganiselo omncinci we-silicon kwi-free state, iya kwenza i-ternary compounds kwi-aluminium alloy ngexesha elifanayo. Ezi zigaba zokungahlambuluki ezinganyibilikiyo okanye izigaba zokungahlambuluki zamahhala 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 kunye nobukhulu beenkozo ze-alloy.
3. Ukulawulwa kweeparamitha ezahlukeneyo zobuchwepheshe ngexesha lokukhupha, njenge-bar preheating lokushisa liphezulu kakhulu, isantya sokuhamba kwesinyithi, amandla okupholisa umoya ngexesha lokukhupha, ubushushu bokuguga kunye nokubamba ixesha kunye nolunye ulawulo olungafanelekanga kulula ukuvelisa ulwahlulo lwe-silicon kunye nokwahlukana, ukuze i-magnesium kunye ne-silicon ingabi ngokupheleleyo i-Mg2Si, ezinye ii-silicone zamahhala zikhona.
Ngamafutshane, ukuba umphezulu weprofayili 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-aluminium oyikhethayo iya kukhuseleka ngakumbi.
Ixesha lokuposa: May-10-2022
