Iubhedu aluminiyamUthotho luntsonkothile ngakumbi, kwaye ezinye ze-aluminiyam ezintsonkothileyo zobhedu ziqulathe izinto ze-alloying yesithathu neyesine ezifana ne-manganese, nickel, isilicon, i-cobalt kunye ne-arsenic.I-HAl66-6-3-2 kunye ne-HAl61-4-3-1, enezinto ezininzi zokudibanisa, ziyi-alloys ezenziwe ngezinto ezintandathu, kwaye ezinye zazo ziyi-complex-processed aluminiyam yobhedu oluvela kwi-alloys ekhethekileyo yokuphosa.Ii-alloys ezahlukeneyo zivame ukuba neepropati ezahlukeneyo zokunyibilika kwaye ngoko zifuna iinkqubo ezahlukeneyo zokunyibilika.
Okokuqala, i-aluminium yobhedu ilula "i-foam" ngexesha le-smelting kwaye ihlanjululwe lula yi-aluminium okanye enye i-metal oxide inclusions.Inkqubo yokunyibilikisa efanelekileyo kufuneka ibandakanye amanyathelo athile okuthintela.Ukuba kukho ifilimu ye-oxide ye-aluminium phezu kwendawo yokuncibilika, inokukhusela ukunyibilika kwinqanaba elithile, kwaye akuyimfuneko ukongeza i-agent egubungelayo ngexesha lokuncibilika.
Uhlalutyo lwethiyori: Xa ukongeza i-zinc kwi-pool etyhidiweyo ekhuselwe yifilimu ye-Al2O3, ukulahlekelwa kwe-volatilization ye-zinc kunokunciphisa.Enyanisweni, ekubeni ukubiliswa kwe-zinc kunokonakalisa ifilimu ye-oxide, kuphela xa kusetyenziswe i-flux efanelekileyo, oko kukuthi, ukunyibilika kunokukhuselwa ngokuthembekileyo, ilahleko evuthayo ye-zinc inokuphetshwa ngokufanelekileyo okanye iyancipha.I-Cryolite iye yaba yinto efunekayo kwaye ibalulekileyo kwi-flux esetyenziselwa ukunyibilikisa ubhedu lwe-aluminium.Ukunyibilika kwe-aluminiyam yobhedu akufuneki kutshiswe ngokugqithisileyo ukuthintela ukunyibilika kwi-oxidizing kunye nokuphefumla kakhulu.Ukuba umxholo werhasi ekunyibilikeni uphezulu kakhulu, unokukhetha ukugubungela i-flux yokucoca, okanye usebenzise ukucocwa kwegesi engasebenziyo, kubandakanya ukuguquguquka kwakhona kunye nokuphinda ukucocwa ngaphambi kokugalelwa, kunye nokusebenzisa intsimbi yentsimbi ukucofa ityuwa yekloridi kwinyibilika yokunyibilikisa ukunyibilika.Izinto eziphezulu zokunyibilika kwe-alloy ezifana nentsimbi, i-manganese, i-silicon, njl njl. equlethwe kwi-aluminium eyinkimbinkimbi yobhedu kufuneka yongezwe ngendlela ye-Cu-Fe, i-Cu-Mn kunye nezinye i-alloys eziphakathi.
Ngokuqhelekileyo, intlawulo eninzi esetyenzisiweyo kunye nobhedu kufuneka yongezwe kwisithando somlilo kuqala kwaye inyibilike, intlawulo eyahlulwe kakuhle inokongezwa ngokuthe ngqo kwi-melted, kwaye i-zinc yongezwa ekugqibeleni ekupheleni kokunyibilika.Xa iintsimbi ezicocekileyo zisetyenziswa njengentlawulo, kufuneka zikhutshwe nge-phosphorus emva kokunyibilika kwazo, zilandelwe yi-manganese (Cu-Mn), isinyithi (Cu-Fe), emva koko i-aluminium, kwaye ekugqibeleni i-zinc.Kwi-aluminium eyinkimbinkimbi yobhedu i-HAl66-6-3-2, umxholo wesinyithi kufuneka ulawulwe kwi-2% ~ 3%, kwaye umxholo we-manganese kufuneka ulawulwe malunga ne-3%.Ngaphandle koko, xa umxholo wabo uphezulu kakhulu, ezinye iimpawu ze-alloy zingachaphazeleka kakubi.Ngenxa yoxinano oluphantsi lwe-aluminium, ukuba inyibilika ayishukunyiswanga kakuhle, inokubangela ukwakheka kweekhemikhali ezingalinganiyo.Xa kukho ukunyibilika kwenguqu kwisithando somlilo, ngokuqhelekileyo i-aluminium kunye nenxalenye yobhedu inokongezwa kuqala, kwaye i-zinc inokongezwa emva kokuba inyibilike.Xa i-aluminium yongezwa, ubushushu obukhulu bunokukhutshwa ngenxa yokudibanisa ubhedu kunye ne-aluminium.Inkqubo ye-exothermic ingasetyenziselwa ukukhawulezisa inkqubo yokunyibilika, kodwa ukuba umsebenzi awukwenziwanga ngokufanelekileyo, ukusabela okukhulu kwe-exothermic kunokubangela ukuba ubushushu bendawo ye-pool etyhidiweyo buphakame kakhulu, kubangele ukuguquguquka kobundlobongela be-zinc, kwaye kwiimeko ezinzima, amadangatye anokukhutshwa eziko.Iqondo lokushisa lokunyibilikisa i-HAl67-2.5 lidla ngokuba ngu-1000 ~ 1100℃, kwaye iqondo lokushisa lokunyibilikisa i-HAl60-1-1, i-HAl59-3-2, i-HAl66-6-6-2 lidla ngokuba ngu-1080 ~ 1120℃, kwaye ubushushu obuphantsi kufuneka busetyenziswe kangangoko kunokwenzeka.Ukunyibilika kobushushu.
Ixesha lokuposa: Jul-07-2022