Ukukhetha imathiriyeli ekrwada
Incasa yempahla ekrwada kufuneka iphucuke kunye nencasa yeubheduiintlobo ngeentlobo.Xa unyibilikisa ubhedu olungabalulekanga, ukuba umgangatho wentlawulo unokwethenjelwa, ngamanye amaxesha ukusetyenziswa kwezinto ezindala kunokufikelela kwi-100%.Nangona kunjalo, ukuze kuqinisekiswe umgangatho wokunyibilika kunye nokunciphisa ilahleko evuthayo, ukusetyenziswa kwentlawulo eyahlulwe ngokucokisekileyo efana ne-sawdust eyahlukeneyo okanye i-zinc chips akufuneki ukuba idlule kwi-30%.Umphezulu wovavanyo: Xa usebenzisa i-50% ye-cathode yobhedu kunye ne-50% yezinto ezindala zobhedu, ixesha elifunekayo lokunyibilikisa lelona lide kwaye ukusetyenziswa kwamandla kuphezulu.Ukuba i-ingot ye-zinc i-preheated ukuya kwi-100 ~ 150 ℃ kwaye yondliwe kwiibhetshi, kunenzuzo kakhulu ukuba idibanise kwaye inyibilike kwi-pool etyhidiweyo ngokukhawuleza, enokunciphisa ilahleko evuthayo yentsimbi.Ukongeza inani elincinci le-phosphorus linokwenza ifilimu ye-elastic oxide ehlanganiswe ne-2ZnO.p2o2 kumphezulu wedama elityhidiweyo.Ukongeza inani elincinci le-aluminium, njenge-0.1% ~ 0.2%, linokwenza ifilimu ekhuselayo ye-Al2O3 kumphezulu we-pool etyhidiweyo, kunye nokunceda ukuphepha nokunciphisa ukuguquguquka kwe-zinc kunye nokuphucula iimeko zokuphosa.Xa inani elikhulu lezinto ezindala zisetyenziselwa ukunyibilikisa ubhedu, imbuyekezo yangaphambili efanelekileyo kufuneka yenziwe kwezinye izinto ezinelahleko enkulu yokunyibilikisa.Ngokomzekelo, inani lembuyekezo yangaphambili ye-zinc yi-0.2% xa i-smelting low-zinc brass, inani lembuyekezo yangaphambili ye-zinc yi-0.4% -0.7% xa i-medium-zinc yobhedu iyancibilika, kwaye inani lembuyekezo yangaphambili ye-zinc yi-1.2% -2.0% xa i-brasmel ephezulu.
Ulawulo lwenkqubo yokunyibilika
Umyalelo oqhelekileyo wokongezwa xa ubhedu benyibilikisa: ubhedu, izinto ezindala kunye ne-zinc.Xa unyibilikisa ubhedu kwizinto ezicocekileyo zentsimbi, ubhedu kufuneka luncibilike kuqala.Ngokuqhelekileyo, xa ubhedu lunyibilikisiwe kwaye lufudunyezwe kwiqondo elithile lobushushu, kufuneka lukhutshwe ngokufanelekileyo (umzekelo nge-phosphorus) kwaye i-zinc kufuneka inyibilike.Xa intlawulo iqulethe intlawulo yobhedu endala, ulandelelwano lokutshaja lunokulungelelaniswa ngokufanelekileyo ngokweemeko zangempela ezifana neempawu zamacandelo e-alloy kunye nohlobo lwesithando somlilo.Ngenxa yokuba izinto ezidala ngokwazo ziqulethe i-zinc, ukwenzela ukunciphisa ukunyibilika kwe-zinc element, into endala yobhedu kufuneka yongezwe kwaye inyibilike ekugqibeleni.Nangona kunjalo, intlawulo enkulu ayifanelekanga ukutshaja kunye nokunyibilika kokugqibela.Ukuba umrhumo umanzi, akufanele wongezwe ngokuthe ngqo kwi-melted.Ukuba umrhumo omanzi wongezwa ngaphezu kwesinye intlawulo enganyibilikiyo, kuya kudala ixesha lokumisa kunye nokufudumala ngaphambi kokuba lincibilike, okungenanzuzo kuphela ukuphepha ukunyibilika kwe-inhalation, kodwa nokuphepha ezinye iingozi.Ukongezwa kweZinc kwiqondo lokushisa eliphantsi ngumgaqo osisiseko omele ulandelwe phantse kuzo zonke iinkqubo zokunyibilikisa ubhedu.Ukongeza i-zinc kwiqondo lokushisa eliphantsi alikwazi ukunciphisa kuphela ilahleko evuthayo ye-zinc, kodwa inokunceda ukhuseleko lomsebenzi wokunyibilikisa.Xa unyibilikisa ubhedu kwi-power-frequency iron-core induction furnace, ngokuqhelekileyo akuyomfuneko ukongeza i-deoxidizer kuba inyibilika ngokwayo, oko kukuthi, ichibi elityhidiweyo lenguqu, liqulethe isixa esikhulu se-zinc.Nangona kunjalo, xa umgangatho wokunyibilika uhlwempuzekile, i-0.001% ~ 0.01% i-phosphorus inokongezwa ngokobunzima obupheleleyo bentlawulo ye-deoxidation yokuncedisa.Ukongeza inani elincinci le-copper-phosphorus master alloy kwi-melt inokunyusa umbane wokunyibilika ngaphambi kokuba ukhululwe kwisithando somlilo.Xa sithatha umzekelo we-H65 brass, indawo yokunyibilika kwayo yi-936°C.Ukuze wenze i-gas kunye nemagazini kwi-melting float kunye nokukhupha ngexesha, ngaphandle kokubangela ukuguquguquka okukhulu kwe-zinc kunye nokuphefumla ukunyibilika, ubushushu obunyibilikayo bulawulwa ngokubanzi kwi-1060 ~ 1100 ° C.Ubushushu bunganyuswa ngokufanelekileyo ukuya kwi-1080 ~ 1120 ℃.Emva "kokutshiza umlilo" amaxesha ama-2 ukuya kwe-3, iphoswe kwisiguquli.Ukumboza ngamalahle abhakiweyo ngexesha lenkqubo yokunyibilikisa, kwaye ubukhulu bomgca wokugubungela kufuneka bube bukhulu kune-80mm.
Ixesha lokuposa: Jul-07-2022